Changes to jswasm/sqlite3.js.
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function(sqlite3InitModule) {
sqlite3InitModule = sqlite3InitModule || {};
"use strict";
// The Module object: Our interface to the outside world. We import
// and export values on it. There are various ways Module can be used:
// 1. Not defined. We create it here
// 2. A function parameter, function(Module) { ..generated code.. }
// 3. pre-run appended it, var Module = {}; ..generated code..
// 4. External script tag defines var Module.
// We need to check if Module already exists (e.g. case 3 above).
// Substitution will be replaced with actual code on later stage of the build,
// this way Closure Compiler will not mangle it (e.g. case 4. above).
// Note that if you want to run closure, and also to use Module
// after the generated code, you will need to define var Module = {};
// before the code. Then that object will be used in the code, and you
// can continue to use Module afterwards as well.
var Module = typeof sqlite3InitModule != 'undefined' ? sqlite3InitModule : {};
// Set up the promise that indicates the Module is initialized
var readyPromiseResolve, readyPromiseReject;
Module['ready'] = new Promise(function(resolve, reject) {
readyPromiseResolve = resolve;
readyPromiseReject = reject;
});
// --pre-jses are emitted after the Module integration code, so that they can
// refer to Module (if they choose; they can also define Module)
/**
BEGIN FILE: api/pre-js.js
This file is intended to be prepended to the sqlite3.js build using
Emscripten's --pre-js=THIS_FILE flag (or equivalent).
*/
// See notes in extern-post-js.js
const sqlite3InitModuleState = self.sqlite3InitModuleState || Object.create(null);
delete self.sqlite3InitModuleState;
/**
This custom locateFile() tries to figure out where to load `path`
from. The intent is to provide a way for foo/bar/X.js loaded from a
Worker constructor or importScripts() to be able to resolve
foo/bar/X.wasm (in the latter case, with some help):
1) If URL param named the same as `path` is set, it is returned.
2) If sqlite3InitModuleState.sqlite3Dir is set, then (thatName + path)
is returned (note that it's assumed to end with '/').
3) If this code is running in the main UI thread AND it was loaded
from a SCRIPT tag, the directory part of that URL is used
as the prefix. (This form of resolution unfortunately does not
function for scripts loaded via importScripts().)
4) If none of the above apply, (prefix+path) is returned.
*/
Module['locateFile'] = function(path, prefix) {
let theFile;
const up = this.urlParams;
if(0){
console.warn("locateFile(",arguments[0], ',', arguments[1],")",
'self.location =',self.location,
'sqlite3InitModuleState.scriptDir =',this.scriptDir,
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function(sqlite3InitModule) {
sqlite3InitModule = sqlite3InitModule || {};
"use strict";
var Module = typeof sqlite3InitModule != 'undefined' ? sqlite3InitModule : {};
var readyPromiseResolve, readyPromiseReject;
Module['ready'] = new Promise(function(resolve, reject) {
readyPromiseResolve = resolve;
readyPromiseReject = reject;
});
const sqlite3InitModuleState = self.sqlite3InitModuleState || Object.create(null);
delete self.sqlite3InitModuleState;
Module['locateFile'] = function(path, prefix) {
let theFile;
const up = this.urlParams;
if(0){
console.warn("locateFile(",arguments[0], ',', arguments[1],")",
'self.location =',self.location,
'sqlite3InitModuleState.scriptDir =',this.scriptDir,
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theFile = this.scriptDir + path;
}else{
theFile = prefix + path;
}
return theFile;
}.bind(sqlite3InitModuleState);
/**
Bug warning: this xInstantiateWasm bit must remain disabled
until this bug is resolved or wasmfs won't work:
https://github.com/emscripten-core/emscripten/issues/17951
*/
const xInstantiateWasm = 1
? 'emscripten-bug-17951'
: 'instantiateWasm';
Module[xInstantiateWasm] = function callee(imports,onSuccess){
imports.env.foo = function(){};
console.warn("instantiateWasm() uri =",callee.uri, self.location.href);
const wfetch = ()=>fetch(callee.uri, {credentials: 'same-origin'});
const loadWasm = WebAssembly.instantiateStreaming
? async ()=>{
return WebAssembly.instantiateStreaming(wfetch(), imports)
.then((arg)=>onSuccess(arg.instance, arg.module));
}
: async ()=>{ // Safari < v15
return wfetch()
.then(response => response.arrayBuffer())
.then(bytes => WebAssembly.instantiate(bytes, imports))
.then((arg)=>onSuccess(arg.instance, arg.module));
};
loadWasm();
return {};
};
/*
It is literally impossible to reliably get the name of _this_ script
at runtime, so impossible to derive X.wasm from script name
X.js. Thus we need, at build-time, to redefine
Module[xInstantiateWasm].uri by appending it to a build-specific
copy of this file with the name of the wasm file. This is apparently
why Emscripten hard-codes the name of the wasm file into their glue
scripts.
*/
Module[xInstantiateWasm].uri = 'sqlite3.wasm';
/* END FILE: api/pre-js.js */
Module[xInstantiateWasm].uri = 'sqlite3.wasm';
// Sometimes an existing Module object exists with properties
// meant to overwrite the default module functionality. Here
// we collect those properties and reapply _after_ we configure
// the current environment's defaults to avoid having to be so
// defensive during initialization.
var moduleOverrides = Object.assign({}, Module);
var arguments_ = [];
var thisProgram = './this.program';
var quit_ = (status, toThrow) => {
throw toThrow;
};
// Determine the runtime environment we are in. You can customize this by
// setting the ENVIRONMENT setting at compile time (see settings.js).
// Attempt to auto-detect the environment
var ENVIRONMENT_IS_WEB = typeof window == 'object';
var ENVIRONMENT_IS_WORKER = typeof importScripts == 'function';
// N.b. Electron.js environment is simultaneously a NODE-environment, but
// also a web environment.
var ENVIRONMENT_IS_NODE = typeof process == 'object' && typeof process.versions == 'object' && typeof process.versions.node == 'string';
var ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;
// `/` should be present at the end if `scriptDirectory` is not empty
var scriptDirectory = '';
function locateFile(path) {
if (Module['locateFile']) {
return Module['locateFile'](path, scriptDirectory);
}
return scriptDirectory + path;
}
// Hooks that are implemented differently in different runtime environments.
var read_,
readAsync,
readBinary,
setWindowTitle;
// Note that this includes Node.js workers when relevant (pthreads is enabled).
// Node.js workers are detected as a combination of ENVIRONMENT_IS_WORKER and
// ENVIRONMENT_IS_NODE.
if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
if (ENVIRONMENT_IS_WORKER) { // Check worker, not web, since window could be polyfilled
scriptDirectory = self.location.href;
} else if (typeof document != 'undefined' && document.currentScript) { // web
scriptDirectory = document.currentScript.src;
}
// When MODULARIZE, this JS may be executed later, after document.currentScript
// is gone, so we saved it, and we use it here instead of any other info.
if (_scriptDir) {
scriptDirectory = _scriptDir;
}
// blob urls look like blob:http://site.com/etc/etc and we cannot infer anything from them.
// otherwise, slice off the final part of the url to find the script directory.
// if scriptDirectory does not contain a slash, lastIndexOf will return -1,
// and scriptDirectory will correctly be replaced with an empty string.
// If scriptDirectory contains a query (starting with ?) or a fragment (starting with #),
// they are removed because they could contain a slash.
if (scriptDirectory.indexOf('blob:') !== 0) {
scriptDirectory = scriptDirectory.substr(0, scriptDirectory.replace(/[?#].*/, "").lastIndexOf('/')+1);
} else {
scriptDirectory = '';
}
// Differentiate the Web Worker from the Node Worker case, as reading must
// be done differently.
{
// include: web_or_worker_shell_read.js
read_ = (url) => {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, false);
xhr.send(null);
return xhr.responseText;
}
if (ENVIRONMENT_IS_WORKER) {
readBinary = (url) => {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, false);
xhr.responseType = 'arraybuffer';
xhr.send(null);
return new Uint8Array(/** @type{!ArrayBuffer} */(xhr.response));
};
}
readAsync = (url, onload, onerror) => {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, true);
xhr.responseType = 'arraybuffer';
xhr.onload = () => {
if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
onload(xhr.response);
return;
}
onerror();
};
xhr.onerror = onerror;
xhr.send(null);
}
// end include: web_or_worker_shell_read.js
}
setWindowTitle = (title) => document.title = title;
} else
{
}
var out = Module['print'] || console.log.bind(console);
var err = Module['printErr'] || console.warn.bind(console);
// Merge back in the overrides
Object.assign(Module, moduleOverrides);
// Free the object hierarchy contained in the overrides, this lets the GC
// reclaim data used e.g. in memoryInitializerRequest, which is a large typed array.
moduleOverrides = null;
// Emit code to handle expected values on the Module object. This applies Module.x
// to the proper local x. This has two benefits: first, we only emit it if it is
// expected to arrive, and second, by using a local everywhere else that can be
// minified.
if (Module['arguments']) arguments_ = Module['arguments'];
if (Module['thisProgram']) thisProgram = Module['thisProgram'];
if (Module['quit']) quit_ = Module['quit'];
// perform assertions in shell.js after we set up out() and err(), as otherwise if an assertion fails it cannot print the message
var STACK_ALIGN = 16;
var POINTER_SIZE = 4;
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theFile = this.scriptDir + path;
}else{
theFile = prefix + path;
}
return theFile;
}.bind(sqlite3InitModuleState);
const xInstantiateWasm = 1
? 'emscripten-bug-17951'
: 'instantiateWasm';
Module[xInstantiateWasm] = function callee(imports,onSuccess){
imports.env.foo = function(){};
console.warn("instantiateWasm() uri =",callee.uri, self.location.href);
const wfetch = ()=>fetch(callee.uri, {credentials: 'same-origin'});
const loadWasm = WebAssembly.instantiateStreaming
? async ()=>{
return WebAssembly.instantiateStreaming(wfetch(), imports)
.then((arg)=>onSuccess(arg.instance, arg.module));
}
: async ()=>{
return wfetch()
.then(response => response.arrayBuffer())
.then(bytes => WebAssembly.instantiate(bytes, imports))
.then((arg)=>onSuccess(arg.instance, arg.module));
};
loadWasm();
return {};
};
Module[xInstantiateWasm].uri = 'sqlite3.wasm';
Module[xInstantiateWasm].uri = 'sqlite3.wasm';
var moduleOverrides = Object.assign({}, Module);
var arguments_ = [];
var thisProgram = './this.program';
var quit_ = (status, toThrow) => {
throw toThrow;
};
var ENVIRONMENT_IS_WEB = typeof window == 'object';
var ENVIRONMENT_IS_WORKER = typeof importScripts == 'function';
var ENVIRONMENT_IS_NODE = typeof process == 'object' && typeof process.versions == 'object' && typeof process.versions.node == 'string';
var ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;
var scriptDirectory = '';
function locateFile(path) {
if (Module['locateFile']) {
return Module['locateFile'](path, scriptDirectory);
}
return scriptDirectory + path;
}
var read_,
readAsync,
readBinary,
setWindowTitle;
if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
if (ENVIRONMENT_IS_WORKER) {
scriptDirectory = self.location.href;
} else if (typeof document != 'undefined' && document.currentScript) {
scriptDirectory = document.currentScript.src;
}
if (_scriptDir) {
scriptDirectory = _scriptDir;
}
if (scriptDirectory.indexOf('blob:') !== 0) {
scriptDirectory = scriptDirectory.substr(0, scriptDirectory.replace(/[?#].*/, "").lastIndexOf('/')+1);
} else {
scriptDirectory = '';
}
{
read_ = (url) => {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, false);
xhr.send(null);
return xhr.responseText;
}
if (ENVIRONMENT_IS_WORKER) {
readBinary = (url) => {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, false);
xhr.responseType = 'arraybuffer';
xhr.send(null);
return new Uint8Array((xhr.response));
};
}
readAsync = (url, onload, onerror) => {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, true);
xhr.responseType = 'arraybuffer';
xhr.onload = () => {
if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) {
onload(xhr.response);
return;
}
onerror();
};
xhr.onerror = onerror;
xhr.send(null);
}
}
setWindowTitle = (title) => document.title = title;
} else
{
}
var out = Module['print'] || console.log.bind(console);
var err = Module['printErr'] || console.warn.bind(console);
Object.assign(Module, moduleOverrides);
moduleOverrides = null;
if (Module['arguments']) arguments_ = Module['arguments'];
if (Module['thisProgram']) thisProgram = Module['thisProgram'];
if (Module['quit']) quit_ = Module['quit'];
var STACK_ALIGN = 16;
var POINTER_SIZE = 4;
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return bits / 8;
}
return 0;
}
}
}
// include: runtime_debug.js
// end include: runtime_debug.js
// === Preamble library stuff ===
// Documentation for the public APIs defined in this file must be updated in:
// site/source/docs/api_reference/preamble.js.rst
// A prebuilt local version of the documentation is available at:
// site/build/text/docs/api_reference/preamble.js.txt
// You can also build docs locally as HTML or other formats in site/
// An online HTML version (which may be of a different version of Emscripten)
// is up at http://kripken.github.io/emscripten-site/docs/api_reference/preamble.js.html
var wasmBinary;
if (Module['wasmBinary']) wasmBinary = Module['wasmBinary'];
var noExitRuntime = Module['noExitRuntime'] || true;
if (typeof WebAssembly != 'object') {
abort('no native wasm support detected');
}
// Wasm globals
var wasmMemory;
//========================================
// Runtime essentials
//========================================
// whether we are quitting the application. no code should run after this.
// set in exit() and abort()
var ABORT = false;
// set by exit() and abort(). Passed to 'onExit' handler.
// NOTE: This is also used as the process return code code in shell environments
// but only when noExitRuntime is false.
var EXITSTATUS;
/** @type {function(*, string=)} */
function assert(condition, text) {
if (!condition) {
// This build was created without ASSERTIONS defined. `assert()` should not
// ever be called in this configuration but in case there are callers in
// the wild leave this simple abort() implemenation here for now.
abort(text);
}
}
// include: runtime_strings.js
// runtime_strings.js: Strings related runtime functions that are part of both MINIMAL_RUNTIME and regular runtime.
var UTF8Decoder = typeof TextDecoder != 'undefined' ? new TextDecoder('utf8') : undefined;
// Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the given array that contains uint8 values, returns
// a copy of that string as a Javascript String object.
/**
* heapOrArray is either a regular array, or a JavaScript typed array view.
* @param {number} idx
* @param {number=} maxBytesToRead
* @return {string}
*/
function UTF8ArrayToString(heapOrArray, idx, maxBytesToRead) {
var endIdx = idx + maxBytesToRead;
var endPtr = idx;
// TextDecoder needs to know the byte length in advance, it doesn't stop on null terminator by itself.
// Also, use the length info to avoid running tiny strings through TextDecoder, since .subarray() allocates garbage.
// (As a tiny code save trick, compare endPtr against endIdx using a negation, so that undefined means Infinity)
while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
}
var str = '';
// If building with TextDecoder, we have already computed the string length above, so test loop end condition against that
while (idx < endPtr) {
// For UTF8 byte structure, see:
// http://en.wikipedia.org/wiki/UTF-8#Description
// https://www.ietf.org/rfc/rfc2279.txt
// https://tools.ietf.org/html/rfc3629
var u0 = heapOrArray[idx++];
if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
var u1 = heapOrArray[idx++] & 63;
if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
var u2 = heapOrArray[idx++] & 63;
if ((u0 & 0xF0) == 0xE0) {
u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
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return bits / 8;
}
return 0;
}
}
}
var wasmBinary;
if (Module['wasmBinary']) wasmBinary = Module['wasmBinary'];
var noExitRuntime = Module['noExitRuntime'] || true;
if (typeof WebAssembly != 'object') {
abort('no native wasm support detected');
}
var wasmMemory;
var ABORT = false;
var EXITSTATUS;
function assert(condition, text) {
if (!condition) {
abort(text);
}
}
var UTF8Decoder = typeof TextDecoder != 'undefined' ? new TextDecoder('utf8') : undefined;
function UTF8ArrayToString(heapOrArray, idx, maxBytesToRead) {
var endIdx = idx + maxBytesToRead;
var endPtr = idx;
while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
}
var str = '';
while (idx < endPtr) {
var u0 = heapOrArray[idx++];
if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
var u1 = heapOrArray[idx++] & 63;
if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
var u2 = heapOrArray[idx++] & 63;
if ((u0 & 0xF0) == 0xE0) {
u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
|
︙ | | | ︙ | |
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|
var ch = u0 - 0x10000;
str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
}
}
return str;
}
// Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the emscripten HEAP, returns a
// copy of that string as a Javascript String object.
// maxBytesToRead: an optional length that specifies the maximum number of bytes to read. You can omit
// this parameter to scan the string until the first \0 byte. If maxBytesToRead is
// passed, and the string at [ptr, ptr+maxBytesToReadr[ contains a null byte in the
// middle, then the string will cut short at that byte index (i.e. maxBytesToRead will
// not produce a string of exact length [ptr, ptr+maxBytesToRead[)
// N.B. mixing frequent uses of UTF8ToString() with and without maxBytesToRead may
// throw JS JIT optimizations off, so it is worth to consider consistently using one
// style or the other.
/**
* @param {number} ptr
* @param {number=} maxBytesToRead
* @return {string}
*/
function UTF8ToString(ptr, maxBytesToRead) {
return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : '';
}
// Copies the given Javascript String object 'str' to the given byte array at address 'outIdx',
// encoded in UTF8 form and null-terminated. The copy will require at most str.length*4+1 bytes of space in the HEAP.
// Use the function lengthBytesUTF8 to compute the exact number of bytes (excluding null terminator) that this function will write.
// Parameters:
// str: the Javascript string to copy.
// heap: the array to copy to. Each index in this array is assumed to be one 8-byte element.
// outIdx: The starting offset in the array to begin the copying.
// maxBytesToWrite: The maximum number of bytes this function can write to the array.
// This count should include the null terminator,
// i.e. if maxBytesToWrite=1, only the null terminator will be written and nothing else.
// maxBytesToWrite=0 does not write any bytes to the output, not even the null terminator.
// Returns the number of bytes written, EXCLUDING the null terminator.
function stringToUTF8Array(str, heap, outIdx, maxBytesToWrite) {
if (!(maxBytesToWrite > 0)) // Parameter maxBytesToWrite is not optional. Negative values, 0, null, undefined and false each don't write out any bytes.
return 0;
var startIdx = outIdx;
var endIdx = outIdx + maxBytesToWrite - 1; // -1 for string null terminator.
for (var i = 0; i < str.length; ++i) {
// Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! So decode UTF16->UTF32->UTF8.
// See http://unicode.org/faq/utf_bom.html#utf16-3
// For UTF8 byte structure, see http://en.wikipedia.org/wiki/UTF-8#Description and https://www.ietf.org/rfc/rfc2279.txt and https://tools.ietf.org/html/rfc3629
var u = str.charCodeAt(i); // possibly a lead surrogate
if (u >= 0xD800 && u <= 0xDFFF) {
var u1 = str.charCodeAt(++i);
u = 0x10000 + ((u & 0x3FF) << 10) | (u1 & 0x3FF);
}
if (u <= 0x7F) {
if (outIdx >= endIdx) break;
heap[outIdx++] = u;
|
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|
var ch = u0 - 0x10000;
str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
}
}
return str;
}
function UTF8ToString(ptr, maxBytesToRead) {
return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : '';
}
function stringToUTF8Array(str, heap, outIdx, maxBytesToWrite) {
if (!(maxBytesToWrite > 0))
return 0;
var startIdx = outIdx;
var endIdx = outIdx + maxBytesToWrite - 1;
for (var i = 0; i < str.length; ++i) {
var u = str.charCodeAt(i);
if (u >= 0xD800 && u <= 0xDFFF) {
var u1 = str.charCodeAt(++i);
u = 0x10000 + ((u & 0x3FF) << 10) | (u1 & 0x3FF);
}
if (u <= 0x7F) {
if (outIdx >= endIdx) break;
heap[outIdx++] = u;
|
︙ | | | ︙ | |
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|
if (outIdx + 3 >= endIdx) break;
heap[outIdx++] = 0xF0 | (u >> 18);
heap[outIdx++] = 0x80 | ((u >> 12) & 63);
heap[outIdx++] = 0x80 | ((u >> 6) & 63);
heap[outIdx++] = 0x80 | (u & 63);
}
}
// Null-terminate the pointer to the buffer.
heap[outIdx] = 0;
return outIdx - startIdx;
}
// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in UTF8 form. The copy will require at most str.length*4+1 bytes of space in the HEAP.
// Use the function lengthBytesUTF8 to compute the exact number of bytes (excluding null terminator) that this function will write.
// Returns the number of bytes written, EXCLUDING the null terminator.
function stringToUTF8(str, outPtr, maxBytesToWrite) {
return stringToUTF8Array(str, HEAPU8,outPtr, maxBytesToWrite);
}
// Returns the number of bytes the given Javascript string takes if encoded as a UTF8 byte array, EXCLUDING the null terminator byte.
function lengthBytesUTF8(str) {
var len = 0;
for (var i = 0; i < str.length; ++i) {
// Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! So decode UTF16->UTF32->UTF8.
// See http://unicode.org/faq/utf_bom.html#utf16-3
var c = str.charCodeAt(i); // possibly a lead surrogate
if (c <= 0x7F) {
len++;
} else if (c <= 0x7FF) {
len += 2;
} else if (c >= 0xD800 && c <= 0xDFFF) {
len += 4; ++i;
} else {
len += 3;
}
}
return len;
}
// end include: runtime_strings.js
// Memory management
var HEAP,
/** @type {!ArrayBuffer} */
buffer,
/** @type {!Int8Array} */
HEAP8,
/** @type {!Uint8Array} */
HEAPU8,
/** @type {!Int16Array} */
HEAP16,
/** @type {!Uint16Array} */
HEAPU16,
/** @type {!Int32Array} */
HEAP32,
/** @type {!Uint32Array} */
HEAPU32,
/** @type {!Float32Array} */
HEAPF32,
/* BigInt64Array type is not correctly defined in closure
/** not-@type {!BigInt64Array} */
HEAP64,
/* BigUInt64Array type is not correctly defined in closure
/** not-t@type {!BigUint64Array} */
HEAPU64,
/** @type {!Float64Array} */
HEAPF64;
function updateGlobalBufferAndViews(buf) {
buffer = buf;
Module['HEAP8'] = HEAP8 = new Int8Array(buf);
Module['HEAP16'] = HEAP16 = new Int16Array(buf);
Module['HEAP32'] = HEAP32 = new Int32Array(buf);
Module['HEAPU8'] = HEAPU8 = new Uint8Array(buf);
Module['HEAPU16'] = HEAPU16 = new Uint16Array(buf);
Module['HEAPU32'] = HEAPU32 = new Uint32Array(buf);
Module['HEAPF32'] = HEAPF32 = new Float32Array(buf);
Module['HEAPF64'] = HEAPF64 = new Float64Array(buf);
Module['HEAP64'] = HEAP64 = new BigInt64Array(buf);
Module['HEAPU64'] = HEAPU64 = new BigUint64Array(buf);
}
var TOTAL_STACK = 5242880;
var INITIAL_MEMORY = Module['INITIAL_MEMORY'] || 13107200;
// In non-standalone/normal mode, we create the memory here.
// include: runtime_init_memory.js
// Create the wasm memory. (Note: this only applies if IMPORTED_MEMORY is defined)
if (Module['wasmMemory']) {
wasmMemory = Module['wasmMemory'];
} else
{
wasmMemory = new WebAssembly.Memory({
'initial': INITIAL_MEMORY / 65536,
// In theory we should not need to emit the maximum if we want "unlimited"
// or 4GB of memory, but VMs error on that atm, see
// https://github.com/emscripten-core/emscripten/issues/14130
// And in the pthreads case we definitely need to emit a maximum. So
// always emit one.
'maximum': 2147483648 / 65536
});
}
if (wasmMemory) {
buffer = wasmMemory.buffer;
}
// If the user provides an incorrect length, just use that length instead rather than providing the user to
// specifically provide the memory length with Module['INITIAL_MEMORY'].
INITIAL_MEMORY = buffer.byteLength;
updateGlobalBufferAndViews(buffer);
// end include: runtime_init_memory.js
// include: runtime_init_table.js
// In regular non-RELOCATABLE mode the table is exported
// from the wasm module and this will be assigned once
// the exports are available.
var wasmTable;
// end include: runtime_init_table.js
// include: runtime_stack_check.js
// end include: runtime_stack_check.js
// include: runtime_assertions.js
// end include: runtime_assertions.js
var __ATPRERUN__ = []; // functions called before the runtime is initialized
var __ATINIT__ = []; // functions called during startup
var __ATEXIT__ = []; // functions called during shutdown
var __ATPOSTRUN__ = []; // functions called after the main() is called
var runtimeInitialized = false;
function keepRuntimeAlive() {
return noExitRuntime;
}
|
|
|
|
|
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|
|
|
|
|
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|
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|
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<
|
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575
576
577
578
579
580
581
582
583
584
585
|
if (outIdx + 3 >= endIdx) break;
heap[outIdx++] = 0xF0 | (u >> 18);
heap[outIdx++] = 0x80 | ((u >> 12) & 63);
heap[outIdx++] = 0x80 | ((u >> 6) & 63);
heap[outIdx++] = 0x80 | (u & 63);
}
}
heap[outIdx] = 0;
return outIdx - startIdx;
}
function stringToUTF8(str, outPtr, maxBytesToWrite) {
return stringToUTF8Array(str, HEAPU8,outPtr, maxBytesToWrite);
}
function lengthBytesUTF8(str) {
var len = 0;
for (var i = 0; i < str.length; ++i) {
var c = str.charCodeAt(i);
if (c <= 0x7F) {
len++;
} else if (c <= 0x7FF) {
len += 2;
} else if (c >= 0xD800 && c <= 0xDFFF) {
len += 4; ++i;
} else {
len += 3;
}
}
return len;
}
var HEAP,
buffer,
HEAP8,
HEAPU8,
HEAP16,
HEAPU16,
HEAP32,
HEAPU32,
HEAPF32,
HEAP64,
HEAPU64,
HEAPF64;
function updateGlobalBufferAndViews(buf) {
buffer = buf;
Module['HEAP8'] = HEAP8 = new Int8Array(buf);
Module['HEAP16'] = HEAP16 = new Int16Array(buf);
Module['HEAP32'] = HEAP32 = new Int32Array(buf);
Module['HEAPU8'] = HEAPU8 = new Uint8Array(buf);
Module['HEAPU16'] = HEAPU16 = new Uint16Array(buf);
Module['HEAPU32'] = HEAPU32 = new Uint32Array(buf);
Module['HEAPF32'] = HEAPF32 = new Float32Array(buf);
Module['HEAPF64'] = HEAPF64 = new Float64Array(buf);
Module['HEAP64'] = HEAP64 = new BigInt64Array(buf);
Module['HEAPU64'] = HEAPU64 = new BigUint64Array(buf);
}
var TOTAL_STACK = 5242880;
var INITIAL_MEMORY = Module['INITIAL_MEMORY'] || 13107200;
if (Module['wasmMemory']) {
wasmMemory = Module['wasmMemory'];
} else
{
wasmMemory = new WebAssembly.Memory({
'initial': INITIAL_MEMORY / 65536,
'maximum': 2147483648 / 65536
});
}
if (wasmMemory) {
buffer = wasmMemory.buffer;
}
INITIAL_MEMORY = buffer.byteLength;
updateGlobalBufferAndViews(buffer);
var wasmTable;
var __ATPRERUN__ = [];
var __ATINIT__ = [];
var __ATEXIT__ = [];
var __ATPOSTRUN__ = [];
var runtimeInitialized = false;
function keepRuntimeAlive() {
return noExitRuntime;
}
|
︙ | | | ︙ | |
676
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|
function addOnExit(cb) {
}
function addOnPostRun(cb) {
__ATPOSTRUN__.unshift(cb);
}
// include: runtime_math.js
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc
// end include: runtime_math.js
// A counter of dependencies for calling run(). If we need to
// do asynchronous work before running, increment this and
// decrement it. Incrementing must happen in a place like
// Module.preRun (used by emcc to add file preloading).
// Note that you can add dependencies in preRun, even though
// it happens right before run - run will be postponed until
// the dependencies are met.
var runDependencies = 0;
var runDependencyWatcher = null;
var dependenciesFulfilled = null; // overridden to take different actions when all run dependencies are fulfilled
function getUniqueRunDependency(id) {
return id;
}
function addRunDependency(id) {
runDependencies++;
|
|
|
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|
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631
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|
function addOnExit(cb) {
}
function addOnPostRun(cb) {
__ATPOSTRUN__.unshift(cb);
}
var runDependencies = 0;
var runDependencyWatcher = null;
var dependenciesFulfilled = null;
function getUniqueRunDependency(id) {
return id;
}
function addRunDependency(id) {
runDependencies++;
|
︙ | | | ︙ | |
727
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|
if (runDependencyWatcher !== null) {
clearInterval(runDependencyWatcher);
runDependencyWatcher = null;
}
if (dependenciesFulfilled) {
var callback = dependenciesFulfilled;
dependenciesFulfilled = null;
callback(); // can add another dependenciesFulfilled
}
}
}
/** @param {string|number=} what */
function abort(what) {
{
if (Module['onAbort']) {
Module['onAbort'](what);
}
}
what = 'Aborted(' + what + ')';
// TODO(sbc): Should we remove printing and leave it up to whoever
// catches the exception?
err(what);
ABORT = true;
EXITSTATUS = 1;
what += '. Build with -sASSERTIONS for more info.';
// Use a wasm runtime error, because a JS error might be seen as a foreign
// exception, which means we'd run destructors on it. We need the error to
// simply make the program stop.
// FIXME This approach does not work in Wasm EH because it currently does not assume
// all RuntimeErrors are from traps; it decides whether a RuntimeError is from
// a trap or not based on a hidden field within the object. So at the moment
// we don't have a way of throwing a wasm trap from JS. TODO Make a JS API that
// allows this in the wasm spec.
// Suppress closure compiler warning here. Closure compiler's builtin extern
// defintion for WebAssembly.RuntimeError claims it takes no arguments even
// though it can.
// TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure gets fixed.
/** @suppress {checkTypes} */
var e = new WebAssembly.RuntimeError(what);
readyPromiseReject(e);
// Throw the error whether or not MODULARIZE is set because abort is used
// in code paths apart from instantiation where an exception is expected
// to be thrown when abort is called.
throw e;
}
// {{MEM_INITIALIZER}}
// include: memoryprofiler.js
// end include: memoryprofiler.js
// include: URIUtils.js
// Prefix of data URIs emitted by SINGLE_FILE and related options.
var dataURIPrefix = 'data:application/octet-stream;base64,';
// Indicates whether filename is a base64 data URI.
function isDataURI(filename) {
// Prefix of data URIs emitted by SINGLE_FILE and related options.
return filename.startsWith(dataURIPrefix);
}
// Indicates whether filename is delivered via file protocol (as opposed to http/https)
function isFileURI(filename) {
return filename.startsWith('file://');
}
// end include: URIUtils.js
var wasmBinaryFile;
wasmBinaryFile = 'sqlite3.wasm';
if (!isDataURI(wasmBinaryFile)) {
wasmBinaryFile = locateFile(wasmBinaryFile);
}
function getBinary(file) {
|
|
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|
if (runDependencyWatcher !== null) {
clearInterval(runDependencyWatcher);
runDependencyWatcher = null;
}
if (dependenciesFulfilled) {
var callback = dependenciesFulfilled;
dependenciesFulfilled = null;
callback();
}
}
}
function abort(what) {
{
if (Module['onAbort']) {
Module['onAbort'](what);
}
}
what = 'Aborted(' + what + ')';
err(what);
ABORT = true;
EXITSTATUS = 1;
what += '. Build with -sASSERTIONS for more info.';
var e = new WebAssembly.RuntimeError(what);
readyPromiseReject(e);
throw e;
}
var dataURIPrefix = 'data:application/octet-stream;base64,';
function isDataURI(filename) {
return filename.startsWith(dataURIPrefix);
}
function isFileURI(filename) {
return filename.startsWith('file://');
}
var wasmBinaryFile;
wasmBinaryFile = 'sqlite3.wasm';
if (!isDataURI(wasmBinaryFile)) {
wasmBinaryFile = locateFile(wasmBinaryFile);
}
function getBinary(file) {
|
︙ | | | ︙ | |
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|
}
catch (err) {
abort(err);
}
}
function getBinaryPromise() {
// If we don't have the binary yet, try to to load it asynchronously.
// Fetch has some additional restrictions over XHR, like it can't be used on a file:// url.
// See https://github.com/github/fetch/pull/92#issuecomment-140665932
// Cordova or Electron apps are typically loaded from a file:// url.
// So use fetch if it is available and the url is not a file, otherwise fall back to XHR.
if (!wasmBinary && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER)) {
if (typeof fetch == 'function'
) {
return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function(response) {
if (!response['ok']) {
throw "failed to load wasm binary file at '" + wasmBinaryFile + "'";
}
return response['arrayBuffer']();
}).catch(function () {
return getBinary(wasmBinaryFile);
});
}
}
// Otherwise, getBinary should be able to get it synchronously
return Promise.resolve().then(function() { return getBinary(wasmBinaryFile); });
}
// Create the wasm instance.
// Receives the wasm imports, returns the exports.
function createWasm() {
// prepare imports
var info = {
'env': asmLibraryArg,
'wasi_snapshot_preview1': asmLibraryArg,
};
// Load the wasm module and create an instance of using native support in the JS engine.
// handle a generated wasm instance, receiving its exports and
// performing other necessary setup
/** @param {WebAssembly.Module=} module*/
function receiveInstance(instance, module) {
var exports = instance.exports;
Module['asm'] = exports;
wasmTable = Module['asm']['__indirect_function_table'];
addOnInit(Module['asm']['__wasm_call_ctors']);
removeRunDependency('wasm-instantiate');
}
// we can't run yet (except in a pthread, where we have a custom sync instantiator)
addRunDependency('wasm-instantiate');
// Prefer streaming instantiation if available.
function receiveInstantiationResult(result) {
// 'result' is a ResultObject object which has both the module and instance.
// receiveInstance() will swap in the exports (to Module.asm) so they can be called
// TODO: Due to Closure regression https://github.com/google/closure-compiler/issues/3193, the above line no longer optimizes out down to the following line.
// When the regression is fixed, can restore the above USE_PTHREADS-enabled path.
receiveInstance(result['instance']);
}
function instantiateArrayBuffer(receiver) {
return getBinaryPromise().then(function(binary) {
return WebAssembly.instantiate(binary, info);
}).then(function (instance) {
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}
catch (err) {
abort(err);
}
}
function getBinaryPromise() {
if (!wasmBinary && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER)) {
if (typeof fetch == 'function'
) {
return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function(response) {
if (!response['ok']) {
throw "failed to load wasm binary file at '" + wasmBinaryFile + "'";
}
return response['arrayBuffer']();
}).catch(function () {
return getBinary(wasmBinaryFile);
});
}
}
return Promise.resolve().then(function() { return getBinary(wasmBinaryFile); });
}
function createWasm() {
var info = {
'env': asmLibraryArg,
'wasi_snapshot_preview1': asmLibraryArg,
};
function receiveInstance(instance, module) {
var exports = instance.exports;
Module['asm'] = exports;
wasmTable = Module['asm']['__indirect_function_table'];
addOnInit(Module['asm']['__wasm_call_ctors']);
removeRunDependency('wasm-instantiate');
}
addRunDependency('wasm-instantiate');
function receiveInstantiationResult(result) {
receiveInstance(result['instance']);
}
function instantiateArrayBuffer(receiver) {
return getBinaryPromise().then(function(binary) {
return WebAssembly.instantiate(binary, info);
}).then(function (instance) {
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function instantiateAsync() {
if (!wasmBinary &&
typeof WebAssembly.instantiateStreaming == 'function' &&
!isDataURI(wasmBinaryFile) &&
typeof fetch == 'function') {
return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function(response) {
// Suppress closure warning here since the upstream definition for
// instantiateStreaming only allows Promise<Repsponse> rather than
// an actual Response.
// TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure is fixed.
/** @suppress {checkTypes} */
var result = WebAssembly.instantiateStreaming(response, info);
return result.then(
receiveInstantiationResult,
function(reason) {
// We expect the most common failure cause to be a bad MIME type for the binary,
// in which case falling back to ArrayBuffer instantiation should work.
err('wasm streaming compile failed: ' + reason);
err('falling back to ArrayBuffer instantiation');
return instantiateArrayBuffer(receiveInstantiationResult);
});
});
} else {
return instantiateArrayBuffer(receiveInstantiationResult);
}
}
// User shell pages can write their own Module.instantiateWasm = function(imports, successCallback) callback
// to manually instantiate the Wasm module themselves. This allows pages to run the instantiation parallel
// to any other async startup actions they are performing.
// Also pthreads and wasm workers initialize the wasm instance through this path.
if (Module['instantiateWasm']) {
try {
var exports = Module['instantiateWasm'](info, receiveInstance);
return exports;
} catch(e) {
err('Module.instantiateWasm callback failed with error: ' + e);
// If instantiation fails, reject the module ready promise.
readyPromiseReject(e);
}
}
// If instantiation fails, reject the module ready promise.
instantiateAsync().catch(readyPromiseReject);
return {}; // no exports yet; we'll fill them in later
}
// Globals used by JS i64 conversions (see makeSetValue)
var tempDouble;
var tempI64;
// === Body ===
var ASM_CONSTS = {
};
/** @constructor */
function ExitStatus(status) {
this.name = 'ExitStatus';
this.message = 'Program terminated with exit(' + status + ')';
this.status = status;
}
function callRuntimeCallbacks(callbacks) {
while (callbacks.length > 0) {
// Pass the module as the first argument.
callbacks.shift()(Module);
}
}
/**
* @param {number} ptr
* @param {string} type
*/
function getValue(ptr, type = 'i8') {
if (type.endsWith('*')) type = '*';
switch (type) {
case 'i1': return HEAP8[((ptr)>>0)];
case 'i8': return HEAP8[((ptr)>>0)];
case 'i16': return HEAP16[((ptr)>>1)];
case 'i32': return HEAP32[((ptr)>>2)];
case 'i64': return HEAP64[((ptr)>>3)];
case 'float': return HEAPF32[((ptr)>>2)];
case 'double': return HEAPF64[((ptr)>>3)];
case '*': return HEAPU32[((ptr)>>2)];
default: abort('invalid type for getValue: ' + type);
}
return null;
}
/**
* @param {number} ptr
* @param {number} value
* @param {string} type
*/
function setValue(ptr, value, type = 'i8') {
if (type.endsWith('*')) type = '*';
switch (type) {
case 'i1': HEAP8[((ptr)>>0)] = value; break;
case 'i8': HEAP8[((ptr)>>0)] = value; break;
case 'i16': HEAP16[((ptr)>>1)] = value; break;
case 'i32': HEAP32[((ptr)>>2)] = value; break;
case 'i64': (tempI64 = [value>>>0,(tempDouble=value,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((ptr)>>2)] = tempI64[0],HEAP32[(((ptr)+(4))>>2)] = tempI64[1]); break;
case 'float': HEAPF32[((ptr)>>2)] = value; break;
case 'double': HEAPF64[((ptr)>>3)] = value; break;
case '*': HEAPU32[((ptr)>>2)] = value; break;
default: abort('invalid type for setValue: ' + type);
}
}
var PATH = {isAbs:(path) => path.charAt(0) === '/',splitPath:(filename) => {
var splitPathRe = /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
return splitPathRe.exec(filename).slice(1);
},normalizeArray:(parts, allowAboveRoot) => {
// if the path tries to go above the root, `up` ends up > 0
var up = 0;
for (var i = parts.length - 1; i >= 0; i--) {
var last = parts[i];
if (last === '.') {
parts.splice(i, 1);
} else if (last === '..') {
parts.splice(i, 1);
up++;
} else if (up) {
parts.splice(i, 1);
up--;
}
}
// if the path is allowed to go above the root, restore leading ..s
if (allowAboveRoot) {
for (; up; up--) {
parts.unshift('..');
}
}
return parts;
},normalize:(path) => {
var isAbsolute = PATH.isAbs(path),
trailingSlash = path.substr(-1) === '/';
// Normalize the path
path = PATH.normalizeArray(path.split('/').filter((p) => !!p), !isAbsolute).join('/');
if (!path && !isAbsolute) {
path = '.';
}
if (path && trailingSlash) {
path += '/';
}
return (isAbsolute ? '/' : '') + path;
},dirname:(path) => {
var result = PATH.splitPath(path),
root = result[0],
dir = result[1];
if (!root && !dir) {
// No dirname whatsoever
return '.';
}
if (dir) {
// It has a dirname, strip trailing slash
dir = dir.substr(0, dir.length - 1);
}
return root + dir;
},basename:(path) => {
// EMSCRIPTEN return '/'' for '/', not an empty string
if (path === '/') return '/';
path = PATH.normalize(path);
path = path.replace(/\/$/, "");
var lastSlash = path.lastIndexOf('/');
if (lastSlash === -1) return path;
return path.substr(lastSlash+1);
},join:function() {
var paths = Array.prototype.slice.call(arguments);
return PATH.normalize(paths.join('/'));
},join2:(l, r) => {
return PATH.normalize(l + '/' + r);
}};
function getRandomDevice() {
if (typeof crypto == 'object' && typeof crypto['getRandomValues'] == 'function') {
// for modern web browsers
var randomBuffer = new Uint8Array(1);
return () => { crypto.getRandomValues(randomBuffer); return randomBuffer[0]; };
} else
// we couldn't find a proper implementation, as Math.random() is not suitable for /dev/random, see emscripten-core/emscripten/pull/7096
return () => abort("randomDevice");
}
var PATH_FS = {resolve:function() {
var resolvedPath = '',
resolvedAbsolute = false;
for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
var path = (i >= 0) ? arguments[i] : FS.cwd();
// Skip empty and invalid entries
if (typeof path != 'string') {
throw new TypeError('Arguments to path.resolve must be strings');
} else if (!path) {
return ''; // an invalid portion invalidates the whole thing
}
resolvedPath = path + '/' + resolvedPath;
resolvedAbsolute = PATH.isAbs(path);
}
// At this point the path should be resolved to a full absolute path, but
// handle relative paths to be safe (might happen when process.cwd() fails)
resolvedPath = PATH.normalizeArray(resolvedPath.split('/').filter((p) => !!p), !resolvedAbsolute).join('/');
return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
},relative:(from, to) => {
from = PATH_FS.resolve(from).substr(1);
to = PATH_FS.resolve(to).substr(1);
function trim(arr) {
var start = 0;
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function instantiateAsync() {
if (!wasmBinary &&
typeof WebAssembly.instantiateStreaming == 'function' &&
!isDataURI(wasmBinaryFile) &&
typeof fetch == 'function') {
return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function(response) {
var result = WebAssembly.instantiateStreaming(response, info);
return result.then(
receiveInstantiationResult,
function(reason) {
err('wasm streaming compile failed: ' + reason);
err('falling back to ArrayBuffer instantiation');
return instantiateArrayBuffer(receiveInstantiationResult);
});
});
} else {
return instantiateArrayBuffer(receiveInstantiationResult);
}
}
if (Module['instantiateWasm']) {
try {
var exports = Module['instantiateWasm'](info, receiveInstance);
return exports;
} catch(e) {
err('Module.instantiateWasm callback failed with error: ' + e);
readyPromiseReject(e);
}
}
instantiateAsync().catch(readyPromiseReject);
return {};
}
var tempDouble;
var tempI64;
var ASM_CONSTS = {
};
function ExitStatus(status) {
this.name = 'ExitStatus';
this.message = 'Program terminated with exit(' + status + ')';
this.status = status;
}
function callRuntimeCallbacks(callbacks) {
while (callbacks.length > 0) {
callbacks.shift()(Module);
}
}
function getValue(ptr, type = 'i8') {
if (type.endsWith('*')) type = '*';
switch (type) {
case 'i1': return HEAP8[((ptr)>>0)];
case 'i8': return HEAP8[((ptr)>>0)];
case 'i16': return HEAP16[((ptr)>>1)];
case 'i32': return HEAP32[((ptr)>>2)];
case 'i64': return HEAP64[((ptr)>>3)];
case 'float': return HEAPF32[((ptr)>>2)];
case 'double': return HEAPF64[((ptr)>>3)];
case '*': return HEAPU32[((ptr)>>2)];
default: abort('invalid type for getValue: ' + type);
}
return null;
}
function setValue(ptr, value, type = 'i8') {
if (type.endsWith('*')) type = '*';
switch (type) {
case 'i1': HEAP8[((ptr)>>0)] = value; break;
case 'i8': HEAP8[((ptr)>>0)] = value; break;
case 'i16': HEAP16[((ptr)>>1)] = value; break;
case 'i32': HEAP32[((ptr)>>2)] = value; break;
case 'i64': (tempI64 = [value>>>0,(tempDouble=value,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((ptr)>>2)] = tempI64[0],HEAP32[(((ptr)+(4))>>2)] = tempI64[1]); break;
case 'float': HEAPF32[((ptr)>>2)] = value; break;
case 'double': HEAPF64[((ptr)>>3)] = value; break;
case '*': HEAPU32[((ptr)>>2)] = value; break;
default: abort('invalid type for setValue: ' + type);
}
}
var PATH = {isAbs:(path) => path.charAt(0) === '/',splitPath:(filename) => {
var splitPathRe = /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
return splitPathRe.exec(filename).slice(1);
},normalizeArray:(parts, allowAboveRoot) => {
var up = 0;
for (var i = parts.length - 1; i >= 0; i--) {
var last = parts[i];
if (last === '.') {
parts.splice(i, 1);
} else if (last === '..') {
parts.splice(i, 1);
up++;
} else if (up) {
parts.splice(i, 1);
up--;
}
}
if (allowAboveRoot) {
for (; up; up--) {
parts.unshift('..');
}
}
return parts;
},normalize:(path) => {
var isAbsolute = PATH.isAbs(path),
trailingSlash = path.substr(-1) === '/';
path = PATH.normalizeArray(path.split('/').filter((p) => !!p), !isAbsolute).join('/');
if (!path && !isAbsolute) {
path = '.';
}
if (path && trailingSlash) {
path += '/';
}
return (isAbsolute ? '/' : '') + path;
},dirname:(path) => {
var result = PATH.splitPath(path),
root = result[0],
dir = result[1];
if (!root && !dir) {
return '.';
}
if (dir) {
dir = dir.substr(0, dir.length - 1);
}
return root + dir;
},basename:(path) => {
if (path === '/') return '/';
path = PATH.normalize(path);
path = path.replace(/\/$/, "");
var lastSlash = path.lastIndexOf('/');
if (lastSlash === -1) return path;
return path.substr(lastSlash+1);
},join:function() {
var paths = Array.prototype.slice.call(arguments);
return PATH.normalize(paths.join('/'));
},join2:(l, r) => {
return PATH.normalize(l + '/' + r);
}};
function getRandomDevice() {
if (typeof crypto == 'object' && typeof crypto['getRandomValues'] == 'function') {
var randomBuffer = new Uint8Array(1);
return () => { crypto.getRandomValues(randomBuffer); return randomBuffer[0]; };
} else
return () => abort("randomDevice");
}
var PATH_FS = {resolve:function() {
var resolvedPath = '',
resolvedAbsolute = false;
for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
var path = (i >= 0) ? arguments[i] : FS.cwd();
if (typeof path != 'string') {
throw new TypeError('Arguments to path.resolve must be strings');
} else if (!path) {
return '';
}
resolvedPath = path + '/' + resolvedPath;
resolvedAbsolute = PATH.isAbs(path);
}
resolvedPath = PATH.normalizeArray(resolvedPath.split('/').filter((p) => !!p), !resolvedAbsolute).join('/');
return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
},relative:(from, to) => {
from = PATH_FS.resolve(from).substr(1);
to = PATH_FS.resolve(to).substr(1);
function trim(arr) {
var start = 0;
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for (var i = samePartsLength; i < fromParts.length; i++) {
outputParts.push('..');
}
outputParts = outputParts.concat(toParts.slice(samePartsLength));
return outputParts.join('/');
}};
/** @type {function(string, boolean=, number=)} */
function intArrayFromString(stringy, dontAddNull, length) {
var len = length > 0 ? length : lengthBytesUTF8(stringy)+1;
var u8array = new Array(len);
var numBytesWritten = stringToUTF8Array(stringy, u8array, 0, u8array.length);
if (dontAddNull) u8array.length = numBytesWritten;
return u8array;
}
var TTY = {ttys:[],init:function () {
// https://github.com/emscripten-core/emscripten/pull/1555
// if (ENVIRONMENT_IS_NODE) {
// // currently, FS.init does not distinguish if process.stdin is a file or TTY
// // device, it always assumes it's a TTY device. because of this, we're forcing
// // process.stdin to UTF8 encoding to at least make stdin reading compatible
// // with text files until FS.init can be refactored.
// process['stdin']['setEncoding']('utf8');
// }
},shutdown:function() {
// https://github.com/emscripten-core/emscripten/pull/1555
// if (ENVIRONMENT_IS_NODE) {
// // inolen: any idea as to why node -e 'process.stdin.read()' wouldn't exit immediately (with process.stdin being a tty)?
// // isaacs: because now it's reading from the stream, you've expressed interest in it, so that read() kicks off a _read() which creates a ReadReq operation
// // inolen: I thought read() in that case was a synchronous operation that just grabbed some amount of buffered data if it exists?
// // isaacs: it is. but it also triggers a _read() call, which calls readStart() on the handle
// // isaacs: do process.stdin.pause() and i'd think it'd probably close the pending call
// process['stdin']['pause']();
// }
},register:function(dev, ops) {
TTY.ttys[dev] = { input: [], output: [], ops: ops };
FS.registerDevice(dev, TTY.stream_ops);
},stream_ops:{open:function(stream) {
var tty = TTY.ttys[stream.node.rdev];
if (!tty) {
throw new FS.ErrnoError(43);
}
stream.tty = tty;
stream.seekable = false;
},close:function(stream) {
// flush any pending line data
stream.tty.ops.fsync(stream.tty);
},fsync:function(stream) {
stream.tty.ops.fsync(stream.tty);
},read:function(stream, buffer, offset, length, pos /* ignored */) {
if (!stream.tty || !stream.tty.ops.get_char) {
throw new FS.ErrnoError(60);
}
var bytesRead = 0;
for (var i = 0; i < length; i++) {
var result;
try {
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for (var i = samePartsLength; i < fromParts.length; i++) {
outputParts.push('..');
}
outputParts = outputParts.concat(toParts.slice(samePartsLength));
return outputParts.join('/');
}};
function intArrayFromString(stringy, dontAddNull, length) {
var len = length > 0 ? length : lengthBytesUTF8(stringy)+1;
var u8array = new Array(len);
var numBytesWritten = stringToUTF8Array(stringy, u8array, 0, u8array.length);
if (dontAddNull) u8array.length = numBytesWritten;
return u8array;
}
var TTY = {ttys:[],init:function () {
},shutdown:function() {
},register:function(dev, ops) {
TTY.ttys[dev] = { input: [], output: [], ops: ops };
FS.registerDevice(dev, TTY.stream_ops);
},stream_ops:{open:function(stream) {
var tty = TTY.ttys[stream.node.rdev];
if (!tty) {
throw new FS.ErrnoError(43);
}
stream.tty = tty;
stream.seekable = false;
},close:function(stream) {
stream.tty.ops.fsync(stream.tty);
},fsync:function(stream) {
stream.tty.ops.fsync(stream.tty);
},read:function(stream, buffer, offset, length, pos ) {
if (!stream.tty || !stream.tty.ops.get_char) {
throw new FS.ErrnoError(60);
}
var bytesRead = 0;
for (var i = 0; i < length; i++) {
var result;
try {
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}
return i;
}},default_tty_ops:{get_char:function(tty) {
if (!tty.input.length) {
var result = null;
if (typeof window != 'undefined' &&
typeof window.prompt == 'function') {
// Browser.
result = window.prompt('Input: '); // returns null on cancel
if (result !== null) {
result += '\n';
}
} else if (typeof readline == 'function') {
// Command line.
result = readline();
if (result !== null) {
result += '\n';
}
}
if (!result) {
return null;
}
tty.input = intArrayFromString(result, true);
}
return tty.input.shift();
},put_char:function(tty, val) {
if (val === null || val === 10) {
out(UTF8ArrayToString(tty.output, 0));
tty.output = [];
} else {
if (val != 0) tty.output.push(val); // val == 0 would cut text output off in the middle.
}
},fsync:function(tty) {
if (tty.output && tty.output.length > 0) {
out(UTF8ArrayToString(tty.output, 0));
tty.output = [];
}
}},default_tty1_ops:{put_char:function(tty, val) {
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}
return i;
}},default_tty_ops:{get_char:function(tty) {
if (!tty.input.length) {
var result = null;
if (typeof window != 'undefined' &&
typeof window.prompt == 'function') {
result = window.prompt('Input: ');
if (result !== null) {
result += '\n';
}
} else if (typeof readline == 'function') {
result = readline();
if (result !== null) {
result += '\n';
}
}
if (!result) {
return null;
}
tty.input = intArrayFromString(result, true);
}
return tty.input.shift();
},put_char:function(tty, val) {
if (val === null || val === 10) {
out(UTF8ArrayToString(tty.output, 0));
tty.output = [];
} else {
if (val != 0) tty.output.push(val);
}
},fsync:function(tty) {
if (tty.output && tty.output.length > 0) {
out(UTF8ArrayToString(tty.output, 0));
tty.output = [];
}
}},default_tty1_ops:{put_char:function(tty, val) {
|
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function alignMemory(size, alignment) {
return Math.ceil(size / alignment) * alignment;
}
function mmapAlloc(size) {
abort();
}
var MEMFS = {ops_table:null,mount:function(mount) {
return MEMFS.createNode(null, '/', 16384 | 511 /* 0777 */, 0);
},createNode:function(parent, name, mode, dev) {
if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
// no supported
throw new FS.ErrnoError(63);
}
if (!MEMFS.ops_table) {
MEMFS.ops_table = {
dir: {
node: {
getattr: MEMFS.node_ops.getattr,
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function alignMemory(size, alignment) {
return Math.ceil(size / alignment) * alignment;
}
function mmapAlloc(size) {
abort();
}
var MEMFS = {ops_table:null,mount:function(mount) {
return MEMFS.createNode(null, '/', 16384 | 511 , 0);
},createNode:function(parent, name, mode, dev) {
if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
throw new FS.ErrnoError(63);
}
if (!MEMFS.ops_table) {
MEMFS.ops_table = {
dir: {
node: {
getattr: MEMFS.node_ops.getattr,
|
︙ | | | ︙ | |
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if (FS.isDir(node.mode)) {
node.node_ops = MEMFS.ops_table.dir.node;
node.stream_ops = MEMFS.ops_table.dir.stream;
node.contents = {};
} else if (FS.isFile(node.mode)) {
node.node_ops = MEMFS.ops_table.file.node;
node.stream_ops = MEMFS.ops_table.file.stream;
node.usedBytes = 0; // The actual number of bytes used in the typed array, as opposed to contents.length which gives the whole capacity.
// When the byte data of the file is populated, this will point to either a typed array, or a normal JS array. Typed arrays are preferred
// for performance, and used by default. However, typed arrays are not resizable like normal JS arrays are, so there is a small disk size
// penalty involved for appending file writes that continuously grow a file similar to std::vector capacity vs used -scheme.
node.contents = null;
} else if (FS.isLink(node.mode)) {
node.node_ops = MEMFS.ops_table.link.node;
node.stream_ops = MEMFS.ops_table.link.stream;
} else if (FS.isChrdev(node.mode)) {
node.node_ops = MEMFS.ops_table.chrdev.node;
node.stream_ops = MEMFS.ops_table.chrdev.stream;
}
node.timestamp = Date.now();
// add the new node to the parent
if (parent) {
parent.contents[name] = node;
parent.timestamp = node.timestamp;
}
return node;
},getFileDataAsTypedArray:function(node) {
if (!node.contents) return new Uint8Array(0);
if (node.contents.subarray) return node.contents.subarray(0, node.usedBytes); // Make sure to not return excess unused bytes.
return new Uint8Array(node.contents);
},expandFileStorage:function(node, newCapacity) {
var prevCapacity = node.contents ? node.contents.length : 0;
if (prevCapacity >= newCapacity) return; // No need to expand, the storage was already large enough.
// Don't expand strictly to the given requested limit if it's only a very small increase, but instead geometrically grow capacity.
// For small filesizes (<1MB), perform size*2 geometric increase, but for large sizes, do a much more conservative size*1.125 increase to
// avoid overshooting the allocation cap by a very large margin.
var CAPACITY_DOUBLING_MAX = 1024 * 1024;
newCapacity = Math.max(newCapacity, (prevCapacity * (prevCapacity < CAPACITY_DOUBLING_MAX ? 2.0 : 1.125)) >>> 0);
if (prevCapacity != 0) newCapacity = Math.max(newCapacity, 256); // At minimum allocate 256b for each file when expanding.
var oldContents = node.contents;
node.contents = new Uint8Array(newCapacity); // Allocate new storage.
if (node.usedBytes > 0) node.contents.set(oldContents.subarray(0, node.usedBytes), 0); // Copy old data over to the new storage.
},resizeFileStorage:function(node, newSize) {
if (node.usedBytes == newSize) return;
if (newSize == 0) {
node.contents = null; // Fully decommit when requesting a resize to zero.
node.usedBytes = 0;
} else {
var oldContents = node.contents;
node.contents = new Uint8Array(newSize); // Allocate new storage.
if (oldContents) {
node.contents.set(oldContents.subarray(0, Math.min(newSize, node.usedBytes))); // Copy old data over to the new storage.
}
node.usedBytes = newSize;
}
},node_ops:{getattr:function(node) {
var attr = {};
// device numbers reuse inode numbers.
attr.dev = FS.isChrdev(node.mode) ? node.id : 1;
attr.ino = node.id;
attr.mode = node.mode;
attr.nlink = 1;
attr.uid = 0;
attr.gid = 0;
attr.rdev = node.rdev;
if (FS.isDir(node.mode)) {
attr.size = 4096;
} else if (FS.isFile(node.mode)) {
attr.size = node.usedBytes;
} else if (FS.isLink(node.mode)) {
attr.size = node.link.length;
} else {
attr.size = 0;
}
attr.atime = new Date(node.timestamp);
attr.mtime = new Date(node.timestamp);
attr.ctime = new Date(node.timestamp);
// NOTE: In our implementation, st_blocks = Math.ceil(st_size/st_blksize),
// but this is not required by the standard.
attr.blksize = 4096;
attr.blocks = Math.ceil(attr.size / attr.blksize);
return attr;
},setattr:function(node, attr) {
if (attr.mode !== undefined) {
node.mode = attr.mode;
}
if (attr.timestamp !== undefined) {
node.timestamp = attr.timestamp;
}
if (attr.size !== undefined) {
MEMFS.resizeFileStorage(node, attr.size);
}
},lookup:function(parent, name) {
throw FS.genericErrors[44];
},mknod:function(parent, name, mode, dev) {
return MEMFS.createNode(parent, name, mode, dev);
},rename:function(old_node, new_dir, new_name) {
// if we're overwriting a directory at new_name, make sure it's empty.
if (FS.isDir(old_node.mode)) {
var new_node;
try {
new_node = FS.lookupNode(new_dir, new_name);
} catch (e) {
}
if (new_node) {
for (var i in new_node.contents) {
throw new FS.ErrnoError(55);
}
}
}
// do the internal rewiring
delete old_node.parent.contents[old_node.name];
old_node.parent.timestamp = Date.now()
old_node.name = new_name;
new_dir.contents[new_name] = old_node;
new_dir.timestamp = old_node.parent.timestamp;
old_node.parent = new_dir;
},unlink:function(parent, name) {
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if (FS.isDir(node.mode)) {
node.node_ops = MEMFS.ops_table.dir.node;
node.stream_ops = MEMFS.ops_table.dir.stream;
node.contents = {};
} else if (FS.isFile(node.mode)) {
node.node_ops = MEMFS.ops_table.file.node;
node.stream_ops = MEMFS.ops_table.file.stream;
node.usedBytes = 0;
node.contents = null;
} else if (FS.isLink(node.mode)) {
node.node_ops = MEMFS.ops_table.link.node;
node.stream_ops = MEMFS.ops_table.link.stream;
} else if (FS.isChrdev(node.mode)) {
node.node_ops = MEMFS.ops_table.chrdev.node;
node.stream_ops = MEMFS.ops_table.chrdev.stream;
}
node.timestamp = Date.now();
if (parent) {
parent.contents[name] = node;
parent.timestamp = node.timestamp;
}
return node;
},getFileDataAsTypedArray:function(node) {
if (!node.contents) return new Uint8Array(0);
if (node.contents.subarray) return node.contents.subarray(0, node.usedBytes);
return new Uint8Array(node.contents);
},expandFileStorage:function(node, newCapacity) {
var prevCapacity = node.contents ? node.contents.length : 0;
if (prevCapacity >= newCapacity) return;
var CAPACITY_DOUBLING_MAX = 1024 * 1024;
newCapacity = Math.max(newCapacity, (prevCapacity * (prevCapacity < CAPACITY_DOUBLING_MAX ? 2.0 : 1.125)) >>> 0);
if (prevCapacity != 0) newCapacity = Math.max(newCapacity, 256);
var oldContents = node.contents;
node.contents = new Uint8Array(newCapacity);
if (node.usedBytes > 0) node.contents.set(oldContents.subarray(0, node.usedBytes), 0);
},resizeFileStorage:function(node, newSize) {
if (node.usedBytes == newSize) return;
if (newSize == 0) {
node.contents = null;
node.usedBytes = 0;
} else {
var oldContents = node.contents;
node.contents = new Uint8Array(newSize);
if (oldContents) {
node.contents.set(oldContents.subarray(0, Math.min(newSize, node.usedBytes)));
}
node.usedBytes = newSize;
}
},node_ops:{getattr:function(node) {
var attr = {};
attr.dev = FS.isChrdev(node.mode) ? node.id : 1;
attr.ino = node.id;
attr.mode = node.mode;
attr.nlink = 1;
attr.uid = 0;
attr.gid = 0;
attr.rdev = node.rdev;
if (FS.isDir(node.mode)) {
attr.size = 4096;
} else if (FS.isFile(node.mode)) {
attr.size = node.usedBytes;
} else if (FS.isLink(node.mode)) {
attr.size = node.link.length;
} else {
attr.size = 0;
}
attr.atime = new Date(node.timestamp);
attr.mtime = new Date(node.timestamp);
attr.ctime = new Date(node.timestamp);
attr.blksize = 4096;
attr.blocks = Math.ceil(attr.size / attr.blksize);
return attr;
},setattr:function(node, attr) {
if (attr.mode !== undefined) {
node.mode = attr.mode;
}
if (attr.timestamp !== undefined) {
node.timestamp = attr.timestamp;
}
if (attr.size !== undefined) {
MEMFS.resizeFileStorage(node, attr.size);
}
},lookup:function(parent, name) {
throw FS.genericErrors[44];
},mknod:function(parent, name, mode, dev) {
return MEMFS.createNode(parent, name, mode, dev);
},rename:function(old_node, new_dir, new_name) {
if (FS.isDir(old_node.mode)) {
var new_node;
try {
new_node = FS.lookupNode(new_dir, new_name);
} catch (e) {
}
if (new_node) {
for (var i in new_node.contents) {
throw new FS.ErrnoError(55);
}
}
}
delete old_node.parent.contents[old_node.name];
old_node.parent.timestamp = Date.now()
old_node.name = new_name;
new_dir.contents[new_name] = old_node;
new_dir.timestamp = old_node.parent.timestamp;
old_node.parent = new_dir;
},unlink:function(parent, name) {
|
︙ | | | ︙ | |
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|
if (!node.contents.hasOwnProperty(key)) {
continue;
}
entries.push(key);
}
return entries;
},symlink:function(parent, newname, oldpath) {
var node = MEMFS.createNode(parent, newname, 511 /* 0777 */ | 40960, 0);
node.link = oldpath;
return node;
},readlink:function(node) {
if (!FS.isLink(node.mode)) {
throw new FS.ErrnoError(28);
}
return node.link;
}},stream_ops:{read:function(stream, buffer, offset, length, position) {
var contents = stream.node.contents;
if (position >= stream.node.usedBytes) return 0;
var size = Math.min(stream.node.usedBytes - position, length);
if (size > 8 && contents.subarray) { // non-trivial, and typed array
buffer.set(contents.subarray(position, position + size), offset);
} else {
for (var i = 0; i < size; i++) buffer[offset + i] = contents[position + i];
}
return size;
},write:function(stream, buffer, offset, length, position, canOwn) {
// If the buffer is located in main memory (HEAP), and if
// memory can grow, we can't hold on to references of the
// memory buffer, as they may get invalidated. That means we
// need to do copy its contents.
if (buffer.buffer === HEAP8.buffer) {
canOwn = false;
}
if (!length) return 0;
var node = stream.node;
node.timestamp = Date.now();
if (buffer.subarray && (!node.contents || node.contents.subarray)) { // This write is from a typed array to a typed array?
if (canOwn) {
node.contents = buffer.subarray(offset, offset + length);
node.usedBytes = length;
return length;
} else if (node.usedBytes === 0 && position === 0) { // If this is a simple first write to an empty file, do a fast set since we don't need to care about old data.
node.contents = buffer.slice(offset, offset + length);
node.usedBytes = length;
return length;
} else if (position + length <= node.usedBytes) { // Writing to an already allocated and used subrange of the file?
node.contents.set(buffer.subarray(offset, offset + length), position);
return length;
}
}
// Appending to an existing file and we need to reallocate, or source data did not come as a typed array.
MEMFS.expandFileStorage(node, position+length);
if (node.contents.subarray && buffer.subarray) {
// Use typed array write which is available.
node.contents.set(buffer.subarray(offset, offset + length), position);
} else {
for (var i = 0; i < length; i++) {
node.contents[position + i] = buffer[offset + i]; // Or fall back to manual write if not.
}
}
node.usedBytes = Math.max(node.usedBytes, position + length);
return length;
},llseek:function(stream, offset, whence) {
var position = offset;
if (whence === 1) {
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|
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if (!node.contents.hasOwnProperty(key)) {
continue;
}
entries.push(key);
}
return entries;
},symlink:function(parent, newname, oldpath) {
var node = MEMFS.createNode(parent, newname, 511 | 40960, 0);
node.link = oldpath;
return node;
},readlink:function(node) {
if (!FS.isLink(node.mode)) {
throw new FS.ErrnoError(28);
}
return node.link;
}},stream_ops:{read:function(stream, buffer, offset, length, position) {
var contents = stream.node.contents;
if (position >= stream.node.usedBytes) return 0;
var size = Math.min(stream.node.usedBytes - position, length);
if (size > 8 && contents.subarray) {
buffer.set(contents.subarray(position, position + size), offset);
} else {
for (var i = 0; i < size; i++) buffer[offset + i] = contents[position + i];
}
return size;
},write:function(stream, buffer, offset, length, position, canOwn) {
if (buffer.buffer === HEAP8.buffer) {
canOwn = false;
}
if (!length) return 0;
var node = stream.node;
node.timestamp = Date.now();
if (buffer.subarray && (!node.contents || node.contents.subarray)) {
if (canOwn) {
node.contents = buffer.subarray(offset, offset + length);
node.usedBytes = length;
return length;
} else if (node.usedBytes === 0 && position === 0) {
node.contents = buffer.slice(offset, offset + length);
node.usedBytes = length;
return length;
} else if (position + length <= node.usedBytes) {
node.contents.set(buffer.subarray(offset, offset + length), position);
return length;
}
}
MEMFS.expandFileStorage(node, position+length);
if (node.contents.subarray && buffer.subarray) {
node.contents.set(buffer.subarray(offset, offset + length), position);
} else {
for (var i = 0; i < length; i++) {
node.contents[position + i] = buffer[offset + i];
}
}
node.usedBytes = Math.max(node.usedBytes, position + length);
return length;
},llseek:function(stream, offset, whence) {
var position = offset;
if (whence === 1) {
|
︙ | | | ︙ | |
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},mmap:function(stream, length, position, prot, flags) {
if (!FS.isFile(stream.node.mode)) {
throw new FS.ErrnoError(43);
}
var ptr;
var allocated;
var contents = stream.node.contents;
// Only make a new copy when MAP_PRIVATE is specified.
if (!(flags & 2) && contents.buffer === buffer) {
// We can't emulate MAP_SHARED when the file is not backed by the buffer
// we're mapping to (e.g. the HEAP buffer).
allocated = false;
ptr = contents.byteOffset;
} else {
// Try to avoid unnecessary slices.
if (position > 0 || position + length < contents.length) {
if (contents.subarray) {
contents = contents.subarray(position, position + length);
} else {
contents = Array.prototype.slice.call(contents, position, position + length);
}
}
allocated = true;
ptr = mmapAlloc(length);
if (!ptr) {
throw new FS.ErrnoError(48);
}
HEAP8.set(contents, ptr);
}
return { ptr: ptr, allocated: allocated };
},msync:function(stream, buffer, offset, length, mmapFlags) {
MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
// should we check if bytesWritten and length are the same?
return 0;
}}};
/** @param {boolean=} noRunDep */
function asyncLoad(url, onload, onerror, noRunDep) {
var dep = !noRunDep ? getUniqueRunDependency('al ' + url) : '';
readAsync(url, (arrayBuffer) => {
assert(arrayBuffer, 'Loading data file "' + url + '" failed (no arrayBuffer).');
onload(new Uint8Array(arrayBuffer));
if (dep) removeRunDependency(dep);
}, (event) => {
|
|
|
|
|
|
|
|
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|
},mmap:function(stream, length, position, prot, flags) {
if (!FS.isFile(stream.node.mode)) {
throw new FS.ErrnoError(43);
}
var ptr;
var allocated;
var contents = stream.node.contents;
if (!(flags & 2) && contents.buffer === buffer) {
allocated = false;
ptr = contents.byteOffset;
} else {
if (position > 0 || position + length < contents.length) {
if (contents.subarray) {
contents = contents.subarray(position, position + length);
} else {
contents = Array.prototype.slice.call(contents, position, position + length);
}
}
allocated = true;
ptr = mmapAlloc(length);
if (!ptr) {
throw new FS.ErrnoError(48);
}
HEAP8.set(contents, ptr);
}
return { ptr: ptr, allocated: allocated };
},msync:function(stream, buffer, offset, length, mmapFlags) {
MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
return 0;
}}};
function asyncLoad(url, onload, onerror, noRunDep) {
var dep = !noRunDep ? getUniqueRunDependency('al ' + url) : '';
readAsync(url, (arrayBuffer) => {
assert(arrayBuffer, 'Loading data file "' + url + '" failed (no arrayBuffer).');
onload(new Uint8Array(arrayBuffer));
if (dep) removeRunDependency(dep);
}, (event) => {
|
︙ | | | ︙ | |
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|
var defaults = {
follow_mount: true,
recurse_count: 0
};
opts = Object.assign(defaults, opts)
if (opts.recurse_count > 8) { // max recursive lookup of 8
throw new FS.ErrnoError(32);
}
// split the path
var parts = PATH.normalizeArray(path.split('/').filter((p) => !!p), false);
// start at the root
var current = FS.root;
var current_path = '/';
for (var i = 0; i < parts.length; i++) {
var islast = (i === parts.length-1);
if (islast && opts.parent) {
// stop resolving
break;
}
current = FS.lookupNode(current, parts[i]);
current_path = PATH.join2(current_path, parts[i]);
// jump to the mount's root node if this is a mountpoint
if (FS.isMountpoint(current)) {
if (!islast || (islast && opts.follow_mount)) {
current = current.mounted.root;
}
}
// by default, lookupPath will not follow a symlink if it is the final path component.
// setting opts.follow = true will override this behavior.
if (!islast || opts.follow) {
var count = 0;
while (FS.isLink(current.mode)) {
var link = FS.readlink(current_path);
current_path = PATH_FS.resolve(PATH.dirname(current_path), link);
var lookup = FS.lookupPath(current_path, { recurse_count: opts.recurse_count + 1 });
current = lookup.node;
if (count++ > 40) { // limit max consecutive symlinks to 40 (SYMLOOP_MAX).
throw new FS.ErrnoError(32);
}
}
}
}
return { path: current_path, node: current };
|
|
|
|
|
|
|
|
|
|
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|
var defaults = {
follow_mount: true,
recurse_count: 0
};
opts = Object.assign(defaults, opts)
if (opts.recurse_count > 8) {
throw new FS.ErrnoError(32);
}
var parts = PATH.normalizeArray(path.split('/').filter((p) => !!p), false);
var current = FS.root;
var current_path = '/';
for (var i = 0; i < parts.length; i++) {
var islast = (i === parts.length-1);
if (islast && opts.parent) {
break;
}
current = FS.lookupNode(current, parts[i]);
current_path = PATH.join2(current_path, parts[i]);
if (FS.isMountpoint(current)) {
if (!islast || (islast && opts.follow_mount)) {
current = current.mounted.root;
}
}
if (!islast || opts.follow) {
var count = 0;
while (FS.isLink(current.mode)) {
var link = FS.readlink(current_path);
current_path = PATH_FS.resolve(PATH.dirname(current_path), link);
var lookup = FS.lookupPath(current_path, { recurse_count: opts.recurse_count + 1 });
current = lookup.node;
if (count++ > 40) {
throw new FS.ErrnoError(32);
}
}
}
}
return { path: current_path, node: current };
|
︙ | | | ︙ | |
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|
var hash = FS.hashName(parent.id, name);
for (var node = FS.nameTable[hash]; node; node = node.name_next) {
var nodeName = node.name;
if (node.parent.id === parent.id && nodeName === name) {
return node;
}
}
// if we failed to find it in the cache, call into the VFS
return FS.lookup(parent, name);
},createNode:(parent, name, mode, rdev) => {
var node = new FS.FSNode(parent, name, mode, rdev);
FS.hashAddNode(node);
return node;
|
|
|
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|
var hash = FS.hashName(parent.id, name);
for (var node = FS.nameTable[hash]; node; node = node.name_next) {
var nodeName = node.name;
if (node.parent.id === parent.id && nodeName === name) {
return node;
}
}
return FS.lookup(parent, name);
},createNode:(parent, name, mode, rdev) => {
var node = new FS.FSNode(parent, name, mode, rdev);
FS.hashAddNode(node);
return node;
|
︙ | | | ︙ | |
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|
perms += 'w';
}
return perms;
},nodePermissions:(node, perms) => {
if (FS.ignorePermissions) {
return 0;
}
// return 0 if any user, group or owner bits are set.
if (perms.includes('r') && !(node.mode & 292)) {
return 2;
} else if (perms.includes('w') && !(node.mode & 146)) {
return 2;
} else if (perms.includes('x') && !(node.mode & 73)) {
return 2;
}
|
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|
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|
perms += 'w';
}
return perms;
},nodePermissions:(node, perms) => {
if (FS.ignorePermissions) {
return 0;
}
if (perms.includes('r') && !(node.mode & 292)) {
return 2;
} else if (perms.includes('w') && !(node.mode & 146)) {
return 2;
} else if (perms.includes('x') && !(node.mode & 73)) {
return 2;
}
|
︙ | | | ︙ | |
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|
},mayOpen:(node, flags) => {
if (!node) {
return 44;
}
if (FS.isLink(node.mode)) {
return 32;
} else if (FS.isDir(node.mode)) {
if (FS.flagsToPermissionString(flags) !== 'r' || // opening for write
(flags & 512)) { // TODO: check for O_SEARCH? (== search for dir only)
return 31;
}
}
return FS.nodePermissions(node, FS.flagsToPermissionString(flags));
},MAX_OPEN_FDS:4096,nextfd:(fd_start = 0, fd_end = FS.MAX_OPEN_FDS) => {
for (var fd = fd_start; fd <= fd_end; fd++) {
if (!FS.streams[fd]) {
return fd;
}
}
throw new FS.ErrnoError(33);
},getStream:(fd) => FS.streams[fd],createStream:(stream, fd_start, fd_end) => {
if (!FS.FSStream) {
FS.FSStream = /** @constructor */ function() {
this.shared = { };
};
FS.FSStream.prototype = {};
Object.defineProperties(FS.FSStream.prototype, {
object: {
/** @this {FS.FSStream} */
get: function() { return this.node; },
/** @this {FS.FSStream} */
set: function(val) { this.node = val; }
},
isRead: {
/** @this {FS.FSStream} */
get: function() { return (this.flags & 2097155) !== 1; }
},
isWrite: {
/** @this {FS.FSStream} */
get: function() { return (this.flags & 2097155) !== 0; }
},
isAppend: {
/** @this {FS.FSStream} */
get: function() { return (this.flags & 1024); }
},
flags: {
/** @this {FS.FSStream} */
get: function() { return this.shared.flags; },
/** @this {FS.FSStream} */
set: function(val) { this.shared.flags = val; },
},
position : {
/** @this {FS.FSStream} */
get: function() { return this.shared.position; },
/** @this {FS.FSStream} */
set: function(val) { this.shared.position = val; },
},
});
}
// clone it, so we can return an instance of FSStream
stream = Object.assign(new FS.FSStream(), stream);
var fd = FS.nextfd(fd_start, fd_end);
stream.fd = fd;
FS.streams[fd] = stream;
return stream;
},closeStream:(fd) => {
FS.streams[fd] = null;
},chrdev_stream_ops:{open:(stream) => {
var device = FS.getDevice(stream.node.rdev);
// override node's stream ops with the device's
stream.stream_ops = device.stream_ops;
// forward the open call
if (stream.stream_ops.open) {
stream.stream_ops.open(stream);
}
},llseek:() => {
throw new FS.ErrnoError(70);
}},major:(dev) => ((dev) >> 8),minor:(dev) => ((dev) & 0xff),makedev:(ma, mi) => ((ma) << 8 | (mi)),registerDevice:(dev, ops) => {
FS.devices[dev] = { stream_ops: ops };
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
},mayOpen:(node, flags) => {
if (!node) {
return 44;
}
if (FS.isLink(node.mode)) {
return 32;
} else if (FS.isDir(node.mode)) {
if (FS.flagsToPermissionString(flags) !== 'r' ||
(flags & 512)) {
return 31;
}
}
return FS.nodePermissions(node, FS.flagsToPermissionString(flags));
},MAX_OPEN_FDS:4096,nextfd:(fd_start = 0, fd_end = FS.MAX_OPEN_FDS) => {
for (var fd = fd_start; fd <= fd_end; fd++) {
if (!FS.streams[fd]) {
return fd;
}
}
throw new FS.ErrnoError(33);
},getStream:(fd) => FS.streams[fd],createStream:(stream, fd_start, fd_end) => {
if (!FS.FSStream) {
FS.FSStream = function() {
this.shared = { };
};
FS.FSStream.prototype = {};
Object.defineProperties(FS.FSStream.prototype, {
object: {
get: function() { return this.node; },
set: function(val) { this.node = val; }
},
isRead: {
get: function() { return (this.flags & 2097155) !== 1; }
},
isWrite: {
get: function() { return (this.flags & 2097155) !== 0; }
},
isAppend: {
get: function() { return (this.flags & 1024); }
},
flags: {
get: function() { return this.shared.flags; },
set: function(val) { this.shared.flags = val; },
},
position : {
get: function() { return this.shared.position; },
set: function(val) { this.shared.position = val; },
},
});
}
stream = Object.assign(new FS.FSStream(), stream);
var fd = FS.nextfd(fd_start, fd_end);
stream.fd = fd;
FS.streams[fd] = stream;
return stream;
},closeStream:(fd) => {
FS.streams[fd] = null;
},chrdev_stream_ops:{open:(stream) => {
var device = FS.getDevice(stream.node.rdev);
stream.stream_ops = device.stream_ops;
if (stream.stream_ops.open) {
stream.stream_ops.open(stream);
}
},llseek:() => {
throw new FS.ErrnoError(70);
}},major:(dev) => ((dev) >> 8),minor:(dev) => ((dev) & 0xff),makedev:(ma, mi) => ((ma) << 8 | (mi)),registerDevice:(dev, ops) => {
FS.devices[dev] = { stream_ops: ops };
|
︙ | | | ︙ | |
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|
return;
}
if (++completed >= mounts.length) {
doCallback(null);
}
};
// sync all mounts
mounts.forEach((mount) => {
if (!mount.type.syncfs) {
return done(null);
}
mount.type.syncfs(mount, populate, done);
});
},mount:(type, opts, mountpoint) => {
var root = mountpoint === '/';
var pseudo = !mountpoint;
var node;
if (root && FS.root) {
throw new FS.ErrnoError(10);
} else if (!root && !pseudo) {
var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
mountpoint = lookup.path; // use the absolute path
node = lookup.node;
if (FS.isMountpoint(node)) {
throw new FS.ErrnoError(10);
}
if (!FS.isDir(node.mode)) {
throw new FS.ErrnoError(54);
}
}
var mount = {
type: type,
opts: opts,
mountpoint: mountpoint,
mounts: []
};
// create a root node for the fs
var mountRoot = type.mount(mount);
mountRoot.mount = mount;
mount.root = mountRoot;
if (root) {
FS.root = mountRoot;
} else if (node) {
// set as a mountpoint
node.mounted = mount;
// add the new mount to the current mount's children
if (node.mount) {
node.mount.mounts.push(mount);
}
}
return mountRoot;
},unmount:(mountpoint) => {
var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
if (!FS.isMountpoint(lookup.node)) {
throw new FS.ErrnoError(28);
}
// destroy the nodes for this mount, and all its child mounts
var node = lookup.node;
var mount = node.mounted;
var mounts = FS.getMounts(mount);
Object.keys(FS.nameTable).forEach((hash) => {
var current = FS.nameTable[hash];
while (current) {
var next = current.name_next;
if (mounts.includes(current.mount)) {
FS.destroyNode(current);
}
current = next;
}
});
// no longer a mountpoint
node.mounted = null;
// remove this mount from the child mounts
var idx = node.mount.mounts.indexOf(mount);
node.mount.mounts.splice(idx, 1);
},lookup:(parent, name) => {
return parent.node_ops.lookup(parent, name);
},mknod:(path, mode, dev) => {
var lookup = FS.lookupPath(path, { parent: true });
var parent = lookup.node;
var name = PATH.basename(path);
if (!name || name === '.' || name === '..') {
throw new FS.ErrnoError(28);
}
var errCode = FS.mayCreate(parent, name);
if (errCode) {
throw new FS.ErrnoError(errCode);
}
if (!parent.node_ops.mknod) {
throw new FS.ErrnoError(63);
}
return parent.node_ops.mknod(parent, name, mode, dev);
},create:(path, mode) => {
mode = mode !== undefined ? mode : 438 /* 0666 */;
mode &= 4095;
mode |= 32768;
return FS.mknod(path, mode, 0);
},mkdir:(path, mode) => {
mode = mode !== undefined ? mode : 511 /* 0777 */;
mode &= 511 | 512;
mode |= 16384;
return FS.mknod(path, mode, 0);
},mkdirTree:(path, mode) => {
var dirs = path.split('/');
var d = '';
for (var i = 0; i < dirs.length; ++i) {
if (!dirs[i]) continue;
d += '/' + dirs[i];
try {
FS.mkdir(d, mode);
} catch(e) {
if (e.errno != 20) throw e;
}
}
},mkdev:(path, mode, dev) => {
if (typeof dev == 'undefined') {
dev = mode;
mode = 438 /* 0666 */;
}
mode |= 8192;
return FS.mknod(path, mode, dev);
},symlink:(oldpath, newpath) => {
if (!PATH_FS.resolve(oldpath)) {
throw new FS.ErrnoError(44);
}
|
|
|
|
|
|
|
|
|
|
|
|
|
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
|
return;
}
if (++completed >= mounts.length) {
doCallback(null);
}
};
mounts.forEach((mount) => {
if (!mount.type.syncfs) {
return done(null);
}
mount.type.syncfs(mount, populate, done);
});
},mount:(type, opts, mountpoint) => {
var root = mountpoint === '/';
var pseudo = !mountpoint;
var node;
if (root && FS.root) {
throw new FS.ErrnoError(10);
} else if (!root && !pseudo) {
var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
mountpoint = lookup.path;
node = lookup.node;
if (FS.isMountpoint(node)) {
throw new FS.ErrnoError(10);
}
if (!FS.isDir(node.mode)) {
throw new FS.ErrnoError(54);
}
}
var mount = {
type: type,
opts: opts,
mountpoint: mountpoint,
mounts: []
};
var mountRoot = type.mount(mount);
mountRoot.mount = mount;
mount.root = mountRoot;
if (root) {
FS.root = mountRoot;
} else if (node) {
node.mounted = mount;
if (node.mount) {
node.mount.mounts.push(mount);
}
}
return mountRoot;
},unmount:(mountpoint) => {
var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
if (!FS.isMountpoint(lookup.node)) {
throw new FS.ErrnoError(28);
}
var node = lookup.node;
var mount = node.mounted;
var mounts = FS.getMounts(mount);
Object.keys(FS.nameTable).forEach((hash) => {
var current = FS.nameTable[hash];
while (current) {
var next = current.name_next;
if (mounts.includes(current.mount)) {
FS.destroyNode(current);
}
current = next;
}
});
node.mounted = null;
var idx = node.mount.mounts.indexOf(mount);
node.mount.mounts.splice(idx, 1);
},lookup:(parent, name) => {
return parent.node_ops.lookup(parent, name);
},mknod:(path, mode, dev) => {
var lookup = FS.lookupPath(path, { parent: true });
var parent = lookup.node;
var name = PATH.basename(path);
if (!name || name === '.' || name === '..') {
throw new FS.ErrnoError(28);
}
var errCode = FS.mayCreate(parent, name);
if (errCode) {
throw new FS.ErrnoError(errCode);
}
if (!parent.node_ops.mknod) {
throw new FS.ErrnoError(63);
}
return parent.node_ops.mknod(parent, name, mode, dev);
},create:(path, mode) => {
mode = mode !== undefined ? mode : 438 ;
mode &= 4095;
mode |= 32768;
return FS.mknod(path, mode, 0);
},mkdir:(path, mode) => {
mode = mode !== undefined ? mode : 511 ;
mode &= 511 | 512;
mode |= 16384;
return FS.mknod(path, mode, 0);
},mkdirTree:(path, mode) => {
var dirs = path.split('/');
var d = '';
for (var i = 0; i < dirs.length; ++i) {
if (!dirs[i]) continue;
d += '/' + dirs[i];
try {
FS.mkdir(d, mode);
} catch(e) {
if (e.errno != 20) throw e;
}
}
},mkdev:(path, mode, dev) => {
if (typeof dev == 'undefined') {
dev = mode;
mode = 438 ;
}
mode |= 8192;
return FS.mknod(path, mode, dev);
},symlink:(oldpath, newpath) => {
if (!PATH_FS.resolve(oldpath)) {
throw new FS.ErrnoError(44);
}
|
︙ | | | ︙ | |
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
|
}
return parent.node_ops.symlink(parent, newname, oldpath);
},rename:(old_path, new_path) => {
var old_dirname = PATH.dirname(old_path);
var new_dirname = PATH.dirname(new_path);
var old_name = PATH.basename(old_path);
var new_name = PATH.basename(new_path);
// parents must exist
var lookup, old_dir, new_dir;
// let the errors from non existant directories percolate up
lookup = FS.lookupPath(old_path, { parent: true });
old_dir = lookup.node;
lookup = FS.lookupPath(new_path, { parent: true });
new_dir = lookup.node;
if (!old_dir || !new_dir) throw new FS.ErrnoError(44);
// need to be part of the same mount
if (old_dir.mount !== new_dir.mount) {
throw new FS.ErrnoError(75);
}
// source must exist
var old_node = FS.lookupNode(old_dir, old_name);
// old path should not be an ancestor of the new path
var relative = PATH_FS.relative(old_path, new_dirname);
if (relative.charAt(0) !== '.') {
throw new FS.ErrnoError(28);
}
// new path should not be an ancestor of the old path
relative = PATH_FS.relative(new_path, old_dirname);
if (relative.charAt(0) !== '.') {
throw new FS.ErrnoError(55);
}
// see if the new path already exists
var new_node;
try {
new_node = FS.lookupNode(new_dir, new_name);
} catch (e) {
// not fatal
}
// early out if nothing needs to change
if (old_node === new_node) {
return;
}
// we'll need to delete the old entry
var isdir = FS.isDir(old_node.mode);
var errCode = FS.mayDelete(old_dir, old_name, isdir);
if (errCode) {
throw new FS.ErrnoError(errCode);
}
// need delete permissions if we'll be overwriting.
// need create permissions if new doesn't already exist.
errCode = new_node ?
FS.mayDelete(new_dir, new_name, isdir) :
FS.mayCreate(new_dir, new_name);
if (errCode) {
throw new FS.ErrnoError(errCode);
}
if (!old_dir.node_ops.rename) {
throw new FS.ErrnoError(63);
}
if (FS.isMountpoint(old_node) || (new_node && FS.isMountpoint(new_node))) {
throw new FS.ErrnoError(10);
}
// if we are going to change the parent, check write permissions
if (new_dir !== old_dir) {
errCode = FS.nodePermissions(old_dir, 'w');
if (errCode) {
throw new FS.ErrnoError(errCode);
}
}
// remove the node from the lookup hash
FS.hashRemoveNode(old_node);
// do the underlying fs rename
try {
old_dir.node_ops.rename(old_node, new_dir, new_name);
} catch (e) {
throw e;
} finally {
// add the node back to the hash (in case node_ops.rename
// changed its name)
FS.hashAddNode(old_node);
}
},rmdir:(path) => {
var lookup = FS.lookupPath(path, { parent: true });
var parent = lookup.node;
var name = PATH.basename(path);
var node = FS.lookupNode(parent, name);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
|
}
return parent.node_ops.symlink(parent, newname, oldpath);
},rename:(old_path, new_path) => {
var old_dirname = PATH.dirname(old_path);
var new_dirname = PATH.dirname(new_path);
var old_name = PATH.basename(old_path);
var new_name = PATH.basename(new_path);
var lookup, old_dir, new_dir;
lookup = FS.lookupPath(old_path, { parent: true });
old_dir = lookup.node;
lookup = FS.lookupPath(new_path, { parent: true });
new_dir = lookup.node;
if (!old_dir || !new_dir) throw new FS.ErrnoError(44);
if (old_dir.mount !== new_dir.mount) {
throw new FS.ErrnoError(75);
}
var old_node = FS.lookupNode(old_dir, old_name);
var relative = PATH_FS.relative(old_path, new_dirname);
if (relative.charAt(0) !== '.') {
throw new FS.ErrnoError(28);
}
relative = PATH_FS.relative(new_path, old_dirname);
if (relative.charAt(0) !== '.') {
throw new FS.ErrnoError(55);
}
var new_node;
try {
new_node = FS.lookupNode(new_dir, new_name);
} catch (e) {
}
if (old_node === new_node) {
return;
}
var isdir = FS.isDir(old_node.mode);
var errCode = FS.mayDelete(old_dir, old_name, isdir);
if (errCode) {
throw new FS.ErrnoError(errCode);
}
errCode = new_node ?
FS.mayDelete(new_dir, new_name, isdir) :
FS.mayCreate(new_dir, new_name);
if (errCode) {
throw new FS.ErrnoError(errCode);
}
if (!old_dir.node_ops.rename) {
throw new FS.ErrnoError(63);
}
if (FS.isMountpoint(old_node) || (new_node && FS.isMountpoint(new_node))) {
throw new FS.ErrnoError(10);
}
if (new_dir !== old_dir) {
errCode = FS.nodePermissions(old_dir, 'w');
if (errCode) {
throw new FS.ErrnoError(errCode);
}
}
FS.hashRemoveNode(old_node);
try {
old_dir.node_ops.rename(old_node, new_dir, new_name);
} catch (e) {
throw e;
} finally {
FS.hashAddNode(old_node);
}
},rmdir:(path) => {
var lookup = FS.lookupPath(path, { parent: true });
var parent = lookup.node;
var name = PATH.basename(path);
var node = FS.lookupNode(parent, name);
|
︙ | | | ︙ | |
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
|
if (!parent) {
throw new FS.ErrnoError(44);
}
var name = PATH.basename(path);
var node = FS.lookupNode(parent, name);
var errCode = FS.mayDelete(parent, name, false);
if (errCode) {
// According to POSIX, we should map EISDIR to EPERM, but
// we instead do what Linux does (and we must, as we use
// the musl linux libc).
throw new FS.ErrnoError(errCode);
}
if (!parent.node_ops.unlink) {
throw new FS.ErrnoError(63);
}
if (FS.isMountpoint(node)) {
throw new FS.ErrnoError(10);
|
|
|
|
|
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
|
if (!parent) {
throw new FS.ErrnoError(44);
}
var name = PATH.basename(path);
var node = FS.lookupNode(parent, name);
var errCode = FS.mayDelete(parent, name, false);
if (errCode) {
throw new FS.ErrnoError(errCode);
}
if (!parent.node_ops.unlink) {
throw new FS.ErrnoError(63);
}
if (FS.isMountpoint(node)) {
throw new FS.ErrnoError(10);
|
︙ | | | ︙ | |
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
|
node = path;
}
if (!node.node_ops.setattr) {
throw new FS.ErrnoError(63);
}
node.node_ops.setattr(node, {
timestamp: Date.now()
// we ignore the uid / gid for now
});
},lchown:(path, uid, gid) => {
FS.chown(path, uid, gid, true);
},fchown:(fd, uid, gid) => {
var stream = FS.getStream(fd);
if (!stream) {
throw new FS.ErrnoError(8);
|
|
|
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
|
node = path;
}
if (!node.node_ops.setattr) {
throw new FS.ErrnoError(63);
}
node.node_ops.setattr(node, {
timestamp: Date.now()
});
},lchown:(path, uid, gid) => {
FS.chown(path, uid, gid, true);
},fchown:(fd, uid, gid) => {
var stream = FS.getStream(fd);
if (!stream) {
throw new FS.ErrnoError(8);
|
︙ | | | ︙ | |
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
|
timestamp: Math.max(atime, mtime)
});
},open:(path, flags, mode) => {
if (path === "") {
throw new FS.ErrnoError(44);
}
flags = typeof flags == 'string' ? FS.modeStringToFlags(flags) : flags;
mode = typeof mode == 'undefined' ? 438 /* 0666 */ : mode;
if ((flags & 64)) {
mode = (mode & 4095) | 32768;
} else {
mode = 0;
}
var node;
if (typeof path == 'object') {
node = path;
} else {
path = PATH.normalize(path);
try {
var lookup = FS.lookupPath(path, {
follow: !(flags & 131072)
});
node = lookup.node;
} catch (e) {
// ignore
}
}
// perhaps we need to create the node
var created = false;
if ((flags & 64)) {
if (node) {
// if O_CREAT and O_EXCL are set, error out if the node already exists
if ((flags & 128)) {
throw new FS.ErrnoError(20);
}
} else {
// node doesn't exist, try to create it
node = FS.mknod(path, mode, 0);
created = true;
}
}
if (!node) {
throw new FS.ErrnoError(44);
}
// can't truncate a device
if (FS.isChrdev(node.mode)) {
flags &= ~512;
}
// if asked only for a directory, then this must be one
if ((flags & 65536) && !FS.isDir(node.mode)) {
throw new FS.ErrnoError(54);
}
// check permissions, if this is not a file we just created now (it is ok to
// create and write to a file with read-only permissions; it is read-only
// for later use)
if (!created) {
var errCode = FS.mayOpen(node, flags);
if (errCode) {
throw new FS.ErrnoError(errCode);
}
}
// do truncation if necessary
if ((flags & 512) && !created) {
FS.truncate(node, 0);
}
// we've already handled these, don't pass down to the underlying vfs
flags &= ~(128 | 512 | 131072);
// register the stream with the filesystem
var stream = FS.createStream({
node: node,
path: FS.getPath(node), // we want the absolute path to the node
flags: flags,
seekable: true,
position: 0,
stream_ops: node.stream_ops,
// used by the file family libc calls (fopen, fwrite, ferror, etc.)
ungotten: [],
error: false
});
// call the new stream's open function
if (stream.stream_ops.open) {
stream.stream_ops.open(stream);
}
if (Module['logReadFiles'] && !(flags & 1)) {
if (!FS.readFiles) FS.readFiles = {};
if (!(path in FS.readFiles)) {
FS.readFiles[path] = 1;
}
}
return stream;
},close:(stream) => {
if (FS.isClosed(stream)) {
throw new FS.ErrnoError(8);
}
if (stream.getdents) stream.getdents = null; // free readdir state
try {
if (stream.stream_ops.close) {
stream.stream_ops.close(stream);
}
} catch (e) {
throw e;
} finally {
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
|
timestamp: Math.max(atime, mtime)
});
},open:(path, flags, mode) => {
if (path === "") {
throw new FS.ErrnoError(44);
}
flags = typeof flags == 'string' ? FS.modeStringToFlags(flags) : flags;
mode = typeof mode == 'undefined' ? 438 : mode;
if ((flags & 64)) {
mode = (mode & 4095) | 32768;
} else {
mode = 0;
}
var node;
if (typeof path == 'object') {
node = path;
} else {
path = PATH.normalize(path);
try {
var lookup = FS.lookupPath(path, {
follow: !(flags & 131072)
});
node = lookup.node;
} catch (e) {
}
}
var created = false;
if ((flags & 64)) {
if (node) {
if ((flags & 128)) {
throw new FS.ErrnoError(20);
}
} else {
node = FS.mknod(path, mode, 0);
created = true;
}
}
if (!node) {
throw new FS.ErrnoError(44);
}
if (FS.isChrdev(node.mode)) {
flags &= ~512;
}
if ((flags & 65536) && !FS.isDir(node.mode)) {
throw new FS.ErrnoError(54);
}
if (!created) {
var errCode = FS.mayOpen(node, flags);
if (errCode) {
throw new FS.ErrnoError(errCode);
}
}
if ((flags & 512) && !created) {
FS.truncate(node, 0);
}
flags &= ~(128 | 512 | 131072);
var stream = FS.createStream({
node: node,
path: FS.getPath(node),
flags: flags,
seekable: true,
position: 0,
stream_ops: node.stream_ops,
ungotten: [],
error: false
});
if (stream.stream_ops.open) {
stream.stream_ops.open(stream);
}
if (Module['logReadFiles'] && !(flags & 1)) {
if (!FS.readFiles) FS.readFiles = {};
if (!(path in FS.readFiles)) {
FS.readFiles[path] = 1;
}
}
return stream;
},close:(stream) => {
if (FS.isClosed(stream)) {
throw new FS.ErrnoError(8);
}
if (stream.getdents) stream.getdents = null;
try {
if (stream.stream_ops.close) {
stream.stream_ops.close(stream);
}
} catch (e) {
throw e;
} finally {
|
︙ | | | ︙ | |
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
|
if (FS.isDir(stream.node.mode)) {
throw new FS.ErrnoError(31);
}
if (!stream.stream_ops.write) {
throw new FS.ErrnoError(28);
}
if (stream.seekable && stream.flags & 1024) {
// seek to the end before writing in append mode
FS.llseek(stream, 0, 2);
}
var seeking = typeof position != 'undefined';
if (!seeking) {
position = stream.position;
} else if (!stream.seekable) {
throw new FS.ErrnoError(70);
|
|
|
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
|
if (FS.isDir(stream.node.mode)) {
throw new FS.ErrnoError(31);
}
if (!stream.stream_ops.write) {
throw new FS.ErrnoError(28);
}
if (stream.seekable && stream.flags & 1024) {
FS.llseek(stream, 0, 2);
}
var seeking = typeof position != 'undefined';
if (!seeking) {
position = stream.position;
} else if (!stream.seekable) {
throw new FS.ErrnoError(70);
|
︙ | | | ︙ | |
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
|
throw new FS.ErrnoError(43);
}
if (!stream.stream_ops.allocate) {
throw new FS.ErrnoError(138);
}
stream.stream_ops.allocate(stream, offset, length);
},mmap:(stream, length, position, prot, flags) => {
// User requests writing to file (prot & PROT_WRITE != 0).
// Checking if we have permissions to write to the file unless
// MAP_PRIVATE flag is set. According to POSIX spec it is possible
// to write to file opened in read-only mode with MAP_PRIVATE flag,
// as all modifications will be visible only in the memory of
// the current process.
if ((prot & 2) !== 0
&& (flags & 2) === 0
&& (stream.flags & 2097155) !== 2) {
throw new FS.ErrnoError(2);
}
if ((stream.flags & 2097155) === 1) {
throw new FS.ErrnoError(2);
|
|
|
|
|
|
|
|
2442
2443
2444
2445
2446
2447
2448
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2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
|
throw new FS.ErrnoError(43);
}
if (!stream.stream_ops.allocate) {
throw new FS.ErrnoError(138);
}
stream.stream_ops.allocate(stream, offset, length);
},mmap:(stream, length, position, prot, flags) => {
if ((prot & 2) !== 0
&& (flags & 2) === 0
&& (stream.flags & 2097155) !== 2) {
throw new FS.ErrnoError(2);
}
if ((stream.flags & 2097155) === 1) {
throw new FS.ErrnoError(2);
|
︙ | | | ︙ | |
2573
2574
2575
2576
2577
2578
2579
2580
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2607
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2618
2619
2620
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2622
2623
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2625
2626
2627
2628
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2632
2633
2634
2635
2636
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2641
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2646
2647
2648
2649
2650
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2656
2657
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2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
|
}
FS.currentPath = lookup.path;
},createDefaultDirectories:() => {
FS.mkdir('/tmp');
FS.mkdir('/home');
FS.mkdir('/home/web_user');
},createDefaultDevices:() => {
// create /dev
FS.mkdir('/dev');
// setup /dev/null
FS.registerDevice(FS.makedev(1, 3), {
read: () => 0,
write: (stream, buffer, offset, length, pos) => length,
});
FS.mkdev('/dev/null', FS.makedev(1, 3));
// setup /dev/tty and /dev/tty1
// stderr needs to print output using err() rather than out()
// so we register a second tty just for it.
TTY.register(FS.makedev(5, 0), TTY.default_tty_ops);
TTY.register(FS.makedev(6, 0), TTY.default_tty1_ops);
FS.mkdev('/dev/tty', FS.makedev(5, 0));
FS.mkdev('/dev/tty1', FS.makedev(6, 0));
// setup /dev/[u]random
var random_device = getRandomDevice();
FS.createDevice('/dev', 'random', random_device);
FS.createDevice('/dev', 'urandom', random_device);
// we're not going to emulate the actual shm device,
// just create the tmp dirs that reside in it commonly
FS.mkdir('/dev/shm');
FS.mkdir('/dev/shm/tmp');
},createSpecialDirectories:() => {
// create /proc/self/fd which allows /proc/self/fd/6 => readlink gives the
// name of the stream for fd 6 (see test_unistd_ttyname)
FS.mkdir('/proc');
var proc_self = FS.mkdir('/proc/self');
FS.mkdir('/proc/self/fd');
FS.mount({
mount: () => {
var node = FS.createNode(proc_self, 'fd', 16384 | 511 /* 0777 */, 73);
node.node_ops = {
lookup: (parent, name) => {
var fd = +name;
var stream = FS.getStream(fd);
if (!stream) throw new FS.ErrnoError(8);
var ret = {
parent: null,
mount: { mountpoint: 'fake' },
node_ops: { readlink: () => stream.path },
};
ret.parent = ret; // make it look like a simple root node
return ret;
}
};
return node;
}
}, {}, '/proc/self/fd');
},createStandardStreams:() => {
// TODO deprecate the old functionality of a single
// input / output callback and that utilizes FS.createDevice
// and instead require a unique set of stream ops
// by default, we symlink the standard streams to the
// default tty devices. however, if the standard streams
// have been overwritten we create a unique device for
// them instead.
if (Module['stdin']) {
FS.createDevice('/dev', 'stdin', Module['stdin']);
} else {
FS.symlink('/dev/tty', '/dev/stdin');
}
if (Module['stdout']) {
FS.createDevice('/dev', 'stdout', null, Module['stdout']);
} else {
FS.symlink('/dev/tty', '/dev/stdout');
}
if (Module['stderr']) {
FS.createDevice('/dev', 'stderr', null, Module['stderr']);
} else {
FS.symlink('/dev/tty1', '/dev/stderr');
}
// open default streams for the stdin, stdout and stderr devices
var stdin = FS.open('/dev/stdin', 0);
var stdout = FS.open('/dev/stdout', 1);
var stderr = FS.open('/dev/stderr', 1);
},ensureErrnoError:() => {
if (FS.ErrnoError) return;
FS.ErrnoError = /** @this{Object} */ function ErrnoError(errno, node) {
this.node = node;
this.setErrno = /** @this{Object} */ function(errno) {
this.errno = errno;
};
this.setErrno(errno);
this.message = 'FS error';
};
FS.ErrnoError.prototype = new Error();
FS.ErrnoError.prototype.constructor = FS.ErrnoError;
// Some errors may happen quite a bit, to avoid overhead we reuse them (and suffer a lack of stack info)
[44].forEach((code) => {
FS.genericErrors[code] = new FS.ErrnoError(code);
FS.genericErrors[code].stack = '<generic error, no stack>';
});
},staticInit:() => {
FS.ensureErrnoError();
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
|
}
FS.currentPath = lookup.path;
},createDefaultDirectories:() => {
FS.mkdir('/tmp');
FS.mkdir('/home');
FS.mkdir('/home/web_user');
},createDefaultDevices:() => {
FS.mkdir('/dev');
FS.registerDevice(FS.makedev(1, 3), {
read: () => 0,
write: (stream, buffer, offset, length, pos) => length,
});
FS.mkdev('/dev/null', FS.makedev(1, 3));
TTY.register(FS.makedev(5, 0), TTY.default_tty_ops);
TTY.register(FS.makedev(6, 0), TTY.default_tty1_ops);
FS.mkdev('/dev/tty', FS.makedev(5, 0));
FS.mkdev('/dev/tty1', FS.makedev(6, 0));
var random_device = getRandomDevice();
FS.createDevice('/dev', 'random', random_device);
FS.createDevice('/dev', 'urandom', random_device);
FS.mkdir('/dev/shm');
FS.mkdir('/dev/shm/tmp');
},createSpecialDirectories:() => {
FS.mkdir('/proc');
var proc_self = FS.mkdir('/proc/self');
FS.mkdir('/proc/self/fd');
FS.mount({
mount: () => {
var node = FS.createNode(proc_self, 'fd', 16384 | 511 , 73);
node.node_ops = {
lookup: (parent, name) => {
var fd = +name;
var stream = FS.getStream(fd);
if (!stream) throw new FS.ErrnoError(8);
var ret = {
parent: null,
mount: { mountpoint: 'fake' },
node_ops: { readlink: () => stream.path },
};
ret.parent = ret;
return ret;
}
};
return node;
}
}, {}, '/proc/self/fd');
},createStandardStreams:() => {
if (Module['stdin']) {
FS.createDevice('/dev', 'stdin', Module['stdin']);
} else {
FS.symlink('/dev/tty', '/dev/stdin');
}
if (Module['stdout']) {
FS.createDevice('/dev', 'stdout', null, Module['stdout']);
} else {
FS.symlink('/dev/tty', '/dev/stdout');
}
if (Module['stderr']) {
FS.createDevice('/dev', 'stderr', null, Module['stderr']);
} else {
FS.symlink('/dev/tty1', '/dev/stderr');
}
var stdin = FS.open('/dev/stdin', 0);
var stdout = FS.open('/dev/stdout', 1);
var stderr = FS.open('/dev/stderr', 1);
},ensureErrnoError:() => {
if (FS.ErrnoError) return;
FS.ErrnoError = function ErrnoError(errno, node) {
this.node = node;
this.setErrno = function(errno) {
this.errno = errno;
};
this.setErrno(errno);
this.message = 'FS error';
};
FS.ErrnoError.prototype = new Error();
FS.ErrnoError.prototype.constructor = FS.ErrnoError;
[44].forEach((code) => {
FS.genericErrors[code] = new FS.ErrnoError(code);
FS.genericErrors[code].stack = '<generic error, no stack>';
});
},staticInit:() => {
FS.ensureErrnoError();
|
︙ | | | ︙ | |
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
|
'MEMFS': MEMFS,
};
},init:(input, output, error) => {
FS.init.initialized = true;
FS.ensureErrnoError();
// Allow Module.stdin etc. to provide defaults, if none explicitly passed to us here
Module['stdin'] = input || Module['stdin'];
Module['stdout'] = output || Module['stdout'];
Module['stderr'] = error || Module['stderr'];
FS.createStandardStreams();
},quit:() => {
FS.init.initialized = false;
// force-flush all streams, so we get musl std streams printed out
// close all of our streams
for (var i = 0; i < FS.streams.length; i++) {
var stream = FS.streams[i];
if (!stream) {
continue;
}
FS.close(stream);
}
},getMode:(canRead, canWrite) => {
var mode = 0;
if (canRead) mode |= 292 | 73;
if (canWrite) mode |= 146;
return mode;
},findObject:(path, dontResolveLastLink) => {
var ret = FS.analyzePath(path, dontResolveLastLink);
if (!ret.exists) {
return null;
}
return ret.object;
},analyzePath:(path, dontResolveLastLink) => {
// operate from within the context of the symlink's target
try {
var lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
path = lookup.path;
} catch (e) {
}
var ret = {
isRoot: false, exists: false, error: 0, name: null, path: null, object: null,
|
|
|
|
|
|
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
|
'MEMFS': MEMFS,
};
},init:(input, output, error) => {
FS.init.initialized = true;
FS.ensureErrnoError();
Module['stdin'] = input || Module['stdin'];
Module['stdout'] = output || Module['stdout'];
Module['stderr'] = error || Module['stderr'];
FS.createStandardStreams();
},quit:() => {
FS.init.initialized = false;
for (var i = 0; i < FS.streams.length; i++) {
var stream = FS.streams[i];
if (!stream) {
continue;
}
FS.close(stream);
}
},getMode:(canRead, canWrite) => {
var mode = 0;
if (canRead) mode |= 292 | 73;
if (canWrite) mode |= 146;
return mode;
},findObject:(path, dontResolveLastLink) => {
var ret = FS.analyzePath(path, dontResolveLastLink);
if (!ret.exists) {
return null;
}
return ret.object;
},analyzePath:(path, dontResolveLastLink) => {
try {
var lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
path = lookup.path;
} catch (e) {
}
var ret = {
isRoot: false, exists: false, error: 0, name: null, path: null, object: null,
|
︙ | | | ︙ | |
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
|
while (parts.length) {
var part = parts.pop();
if (!part) continue;
var current = PATH.join2(parent, part);
try {
FS.mkdir(current);
} catch (e) {
// ignore EEXIST
}
parent = current;
}
return current;
},createFile:(parent, name, properties, canRead, canWrite) => {
var path = PATH.join2(typeof parent == 'string' ? parent : FS.getPath(parent), name);
var mode = FS.getMode(canRead, canWrite);
|
|
|
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
|
while (parts.length) {
var part = parts.pop();
if (!part) continue;
var current = PATH.join2(parent, part);
try {
FS.mkdir(current);
} catch (e) {
}
parent = current;
}
return current;
},createFile:(parent, name, properties, canRead, canWrite) => {
var path = PATH.join2(typeof parent == 'string' ? parent : FS.getPath(parent), name);
var mode = FS.getMode(canRead, canWrite);
|
︙ | | | ︙ | |
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
|
var node = FS.create(path, mode);
if (data) {
if (typeof data == 'string') {
var arr = new Array(data.length);
for (var i = 0, len = data.length; i < len; ++i) arr[i] = data.charCodeAt(i);
data = arr;
}
// make sure we can write to the file
FS.chmod(node, mode | 146);
var stream = FS.open(node, 577);
FS.write(stream, data, 0, data.length, 0, canOwn);
FS.close(stream);
FS.chmod(node, mode);
}
return node;
},createDevice:(parent, name, input, output) => {
var path = PATH.join2(typeof parent == 'string' ? parent : FS.getPath(parent), name);
var mode = FS.getMode(!!input, !!output);
if (!FS.createDevice.major) FS.createDevice.major = 64;
var dev = FS.makedev(FS.createDevice.major++, 0);
// Create a fake device that a set of stream ops to emulate
// the old behavior.
FS.registerDevice(dev, {
open: (stream) => {
stream.seekable = false;
},
close: (stream) => {
// flush any pending line data
if (output && output.buffer && output.buffer.length) {
output(10);
}
},
read: (stream, buffer, offset, length, pos /* ignored */) => {
var bytesRead = 0;
for (var i = 0; i < length; i++) {
var result;
try {
result = input();
} catch (e) {
throw new FS.ErrnoError(29);
|
|
|
|
|
|
|
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
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2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
|
var node = FS.create(path, mode);
if (data) {
if (typeof data == 'string') {
var arr = new Array(data.length);
for (var i = 0, len = data.length; i < len; ++i) arr[i] = data.charCodeAt(i);
data = arr;
}
FS.chmod(node, mode | 146);
var stream = FS.open(node, 577);
FS.write(stream, data, 0, data.length, 0, canOwn);
FS.close(stream);
FS.chmod(node, mode);
}
return node;
},createDevice:(parent, name, input, output) => {
var path = PATH.join2(typeof parent == 'string' ? parent : FS.getPath(parent), name);
var mode = FS.getMode(!!input, !!output);
if (!FS.createDevice.major) FS.createDevice.major = 64;
var dev = FS.makedev(FS.createDevice.major++, 0);
FS.registerDevice(dev, {
open: (stream) => {
stream.seekable = false;
},
close: (stream) => {
if (output && output.buffer && output.buffer.length) {
output(10);
}
},
read: (stream, buffer, offset, length, pos ) => {
var bytesRead = 0;
for (var i = 0; i < length; i++) {
var result;
try {
result = input();
} catch (e) {
throw new FS.ErrnoError(29);
|
︙ | | | ︙ | |
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
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2882
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2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
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2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
|
});
return FS.mkdev(path, mode, dev);
},forceLoadFile:(obj) => {
if (obj.isDevice || obj.isFolder || obj.link || obj.contents) return true;
if (typeof XMLHttpRequest != 'undefined') {
throw new Error("Lazy loading should have been performed (contents set) in createLazyFile, but it was not. Lazy loading only works in web workers. Use --embed-file or --preload-file in emcc on the main thread.");
} else if (read_) {
// Command-line.
try {
// WARNING: Can't read binary files in V8's d8 or tracemonkey's js, as
// read() will try to parse UTF8.
obj.contents = intArrayFromString(read_(obj.url), true);
obj.usedBytes = obj.contents.length;
} catch (e) {
throw new FS.ErrnoError(29);
}
} else {
throw new Error('Cannot load without read() or XMLHttpRequest.');
}
},createLazyFile:(parent, name, url, canRead, canWrite) => {
// Lazy chunked Uint8Array (implements get and length from Uint8Array). Actual getting is abstracted away for eventual reuse.
/** @constructor */
function LazyUint8Array() {
this.lengthKnown = false;
this.chunks = []; // Loaded chunks. Index is the chunk number
}
LazyUint8Array.prototype.get = /** @this{Object} */ function LazyUint8Array_get(idx) {
if (idx > this.length-1 || idx < 0) {
return undefined;
}
var chunkOffset = idx % this.chunkSize;
var chunkNum = (idx / this.chunkSize)|0;
return this.getter(chunkNum)[chunkOffset];
};
LazyUint8Array.prototype.setDataGetter = function LazyUint8Array_setDataGetter(getter) {
this.getter = getter;
};
LazyUint8Array.prototype.cacheLength = function LazyUint8Array_cacheLength() {
// Find length
var xhr = new XMLHttpRequest();
xhr.open('HEAD', url, false);
xhr.send(null);
if (!(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304)) throw new Error("Couldn't load " + url + ". Status: " + xhr.status);
var datalength = Number(xhr.getResponseHeader("Content-length"));
var header;
var hasByteServing = (header = xhr.getResponseHeader("Accept-Ranges")) && header === "bytes";
var usesGzip = (header = xhr.getResponseHeader("Content-Encoding")) && header === "gzip";
var chunkSize = 1024*1024; // Chunk size in bytes
if (!hasByteServing) chunkSize = datalength;
// Function to get a range from the remote URL.
var doXHR = (from, to) => {
if (from > to) throw new Error("invalid range (" + from + ", " + to + ") or no bytes requested!");
if (to > datalength-1) throw new Error("only " + datalength + " bytes available! programmer error!");
// TODO: Use mozResponseArrayBuffer, responseStream, etc. if available.
var xhr = new XMLHttpRequest();
xhr.open('GET', url, false);
if (datalength !== chunkSize) xhr.setRequestHeader("Range", "bytes=" + from + "-" + to);
// Some hints to the browser that we want binary data.
xhr.responseType = 'arraybuffer';
if (xhr.overrideMimeType) {
xhr.overrideMimeType('text/plain; charset=x-user-defined');
}
xhr.send(null);
if (!(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304)) throw new Error("Couldn't load " + url + ". Status: " + xhr.status);
if (xhr.response !== undefined) {
return new Uint8Array(/** @type{Array<number>} */(xhr.response || []));
}
return intArrayFromString(xhr.responseText || '', true);
};
var lazyArray = this;
lazyArray.setDataGetter((chunkNum) => {
var start = chunkNum * chunkSize;
var end = (chunkNum+1) * chunkSize - 1; // including this byte
end = Math.min(end, datalength-1); // if datalength-1 is selected, this is the last block
if (typeof lazyArray.chunks[chunkNum] == 'undefined') {
lazyArray.chunks[chunkNum] = doXHR(start, end);
}
if (typeof lazyArray.chunks[chunkNum] == 'undefined') throw new Error('doXHR failed!');
return lazyArray.chunks[chunkNum];
});
if (usesGzip || !datalength) {
// if the server uses gzip or doesn't supply the length, we have to download the whole file to get the (uncompressed) length
chunkSize = datalength = 1; // this will force getter(0)/doXHR do download the whole file
datalength = this.getter(0).length;
chunkSize = datalength;
out("LazyFiles on gzip forces download of the whole file when length is accessed");
}
this._length = datalength;
this._chunkSize = chunkSize;
this.lengthKnown = true;
};
if (typeof XMLHttpRequest != 'undefined') {
if (!ENVIRONMENT_IS_WORKER) throw 'Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc';
var lazyArray = new LazyUint8Array();
Object.defineProperties(lazyArray, {
length: {
get: /** @this{Object} */ function() {
if (!this.lengthKnown) {
this.cacheLength();
}
return this._length;
}
},
chunkSize: {
get: /** @this{Object} */ function() {
if (!this.lengthKnown) {
this.cacheLength();
}
return this._chunkSize;
}
}
});
var properties = { isDevice: false, contents: lazyArray };
} else {
var properties = { isDevice: false, url: url };
}
var node = FS.createFile(parent, name, properties, canRead, canWrite);
// This is a total hack, but I want to get this lazy file code out of the
// core of MEMFS. If we want to keep this lazy file concept I feel it should
// be its own thin LAZYFS proxying calls to MEMFS.
if (properties.contents) {
node.contents = properties.contents;
} else if (properties.url) {
node.contents = null;
node.url = properties.url;
}
// Add a function that defers querying the file size until it is asked the first time.
Object.defineProperties(node, {
usedBytes: {
get: /** @this {FSNode} */ function() { return this.contents.length; }
}
});
// override each stream op with one that tries to force load the lazy file first
var stream_ops = {};
var keys = Object.keys(node.stream_ops);
keys.forEach((key) => {
var fn = node.stream_ops[key];
stream_ops[key] = function forceLoadLazyFile() {
FS.forceLoadFile(node);
return fn.apply(null, arguments);
};
});
function writeChunks(stream, buffer, offset, length, position) {
var contents = stream.node.contents;
if (position >= contents.length)
return 0;
var size = Math.min(contents.length - position, length);
if (contents.slice) { // normal array
for (var i = 0; i < size; i++) {
buffer[offset + i] = contents[position + i];
}
} else {
for (var i = 0; i < size; i++) { // LazyUint8Array from sync binary XHR
buffer[offset + i] = contents.get(position + i);
}
}
return size;
}
// use a custom read function
stream_ops.read = (stream, buffer, offset, length, position) => {
FS.forceLoadFile(node);
return writeChunks(stream, buffer, offset, length, position)
};
// use a custom mmap function
stream_ops.mmap = (stream, length, position, prot, flags) => {
FS.forceLoadFile(node);
var ptr = mmapAlloc(length);
if (!ptr) {
throw new FS.ErrnoError(48);
}
writeChunks(stream, HEAP8, ptr, length, position);
return { ptr: ptr, allocated: true };
};
node.stream_ops = stream_ops;
return node;
},createPreloadedFile:(parent, name, url, canRead, canWrite, onload, onerror, dontCreateFile, canOwn, preFinish) => {
// TODO we should allow people to just pass in a complete filename instead
// of parent and name being that we just join them anyways
var fullname = name ? PATH_FS.resolve(PATH.join2(parent, name)) : parent;
var dep = getUniqueRunDependency('cp ' + fullname); // might have several active requests for the same fullname
function processData(byteArray) {
function finish(byteArray) {
if (preFinish) preFinish();
if (!dontCreateFile) {
FS.createDataFile(parent, name, byteArray, canRead, canWrite, canOwn);
}
if (onload) onload();
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
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|
|
|
|
|
|
|
|
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
|
});
return FS.mkdev(path, mode, dev);
},forceLoadFile:(obj) => {
if (obj.isDevice || obj.isFolder || obj.link || obj.contents) return true;
if (typeof XMLHttpRequest != 'undefined') {
throw new Error("Lazy loading should have been performed (contents set) in createLazyFile, but it was not. Lazy loading only works in web workers. Use --embed-file or --preload-file in emcc on the main thread.");
} else if (read_) {
try {
obj.contents = intArrayFromString(read_(obj.url), true);
obj.usedBytes = obj.contents.length;
} catch (e) {
throw new FS.ErrnoError(29);
}
} else {
throw new Error('Cannot load without read() or XMLHttpRequest.');
}
},createLazyFile:(parent, name, url, canRead, canWrite) => {
function LazyUint8Array() {
this.lengthKnown = false;
this.chunks = [];
}
LazyUint8Array.prototype.get = function LazyUint8Array_get(idx) {
if (idx > this.length-1 || idx < 0) {
return undefined;
}
var chunkOffset = idx % this.chunkSize;
var chunkNum = (idx / this.chunkSize)|0;
return this.getter(chunkNum)[chunkOffset];
};
LazyUint8Array.prototype.setDataGetter = function LazyUint8Array_setDataGetter(getter) {
this.getter = getter;
};
LazyUint8Array.prototype.cacheLength = function LazyUint8Array_cacheLength() {
var xhr = new XMLHttpRequest();
xhr.open('HEAD', url, false);
xhr.send(null);
if (!(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304)) throw new Error("Couldn't load " + url + ". Status: " + xhr.status);
var datalength = Number(xhr.getResponseHeader("Content-length"));
var header;
var hasByteServing = (header = xhr.getResponseHeader("Accept-Ranges")) && header === "bytes";
var usesGzip = (header = xhr.getResponseHeader("Content-Encoding")) && header === "gzip";
var chunkSize = 1024*1024;
if (!hasByteServing) chunkSize = datalength;
var doXHR = (from, to) => {
if (from > to) throw new Error("invalid range (" + from + ", " + to + ") or no bytes requested!");
if (to > datalength-1) throw new Error("only " + datalength + " bytes available! programmer error!");
var xhr = new XMLHttpRequest();
xhr.open('GET', url, false);
if (datalength !== chunkSize) xhr.setRequestHeader("Range", "bytes=" + from + "-" + to);
xhr.responseType = 'arraybuffer';
if (xhr.overrideMimeType) {
xhr.overrideMimeType('text/plain; charset=x-user-defined');
}
xhr.send(null);
if (!(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304)) throw new Error("Couldn't load " + url + ". Status: " + xhr.status);
if (xhr.response !== undefined) {
return new Uint8Array((xhr.response || []));
}
return intArrayFromString(xhr.responseText || '', true);
};
var lazyArray = this;
lazyArray.setDataGetter((chunkNum) => {
var start = chunkNum * chunkSize;
var end = (chunkNum+1) * chunkSize - 1;
end = Math.min(end, datalength-1);
if (typeof lazyArray.chunks[chunkNum] == 'undefined') {
lazyArray.chunks[chunkNum] = doXHR(start, end);
}
if (typeof lazyArray.chunks[chunkNum] == 'undefined') throw new Error('doXHR failed!');
return lazyArray.chunks[chunkNum];
});
if (usesGzip || !datalength) {
chunkSize = datalength = 1;
datalength = this.getter(0).length;
chunkSize = datalength;
out("LazyFiles on gzip forces download of the whole file when length is accessed");
}
this._length = datalength;
this._chunkSize = chunkSize;
this.lengthKnown = true;
};
if (typeof XMLHttpRequest != 'undefined') {
if (!ENVIRONMENT_IS_WORKER) throw 'Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc';
var lazyArray = new LazyUint8Array();
Object.defineProperties(lazyArray, {
length: {
get: function() {
if (!this.lengthKnown) {
this.cacheLength();
}
return this._length;
}
},
chunkSize: {
get: function() {
if (!this.lengthKnown) {
this.cacheLength();
}
return this._chunkSize;
}
}
});
var properties = { isDevice: false, contents: lazyArray };
} else {
var properties = { isDevice: false, url: url };
}
var node = FS.createFile(parent, name, properties, canRead, canWrite);
if (properties.contents) {
node.contents = properties.contents;
} else if (properties.url) {
node.contents = null;
node.url = properties.url;
}
Object.defineProperties(node, {
usedBytes: {
get: function() { return this.contents.length; }
}
});
var stream_ops = {};
var keys = Object.keys(node.stream_ops);
keys.forEach((key) => {
var fn = node.stream_ops[key];
stream_ops[key] = function forceLoadLazyFile() {
FS.forceLoadFile(node);
return fn.apply(null, arguments);
};
});
function writeChunks(stream, buffer, offset, length, position) {
var contents = stream.node.contents;
if (position >= contents.length)
return 0;
var size = Math.min(contents.length - position, length);
if (contents.slice) {
for (var i = 0; i < size; i++) {
buffer[offset + i] = contents[position + i];
}
} else {
for (var i = 0; i < size; i++) {
buffer[offset + i] = contents.get(position + i);
}
}
return size;
}
stream_ops.read = (stream, buffer, offset, length, position) => {
FS.forceLoadFile(node);
return writeChunks(stream, buffer, offset, length, position)
};
stream_ops.mmap = (stream, length, position, prot, flags) => {
FS.forceLoadFile(node);
var ptr = mmapAlloc(length);
if (!ptr) {
throw new FS.ErrnoError(48);
}
writeChunks(stream, HEAP8, ptr, length, position);
return { ptr: ptr, allocated: true };
};
node.stream_ops = stream_ops;
return node;
},createPreloadedFile:(parent, name, url, canRead, canWrite, onload, onerror, dontCreateFile, canOwn, preFinish) => {
var fullname = name ? PATH_FS.resolve(PATH.join2(parent, name)) : parent;
var dep = getUniqueRunDependency('cp ' + fullname);
function processData(byteArray) {
function finish(byteArray) {
if (preFinish) preFinish();
if (!dontCreateFile) {
FS.createDataFile(parent, name, byteArray, canRead, canWrite, canOwn);
}
if (onload) onload();
|
︙ | | | ︙ | |
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
|
onerror = onerror || (() => {});
var indexedDB = FS.indexedDB();
try {
var openRequest = indexedDB.open(FS.DB_NAME(), FS.DB_VERSION);
} catch (e) {
return onerror(e);
}
openRequest.onupgradeneeded = onerror; // no database to load from
openRequest.onsuccess = () => {
var db = openRequest.result;
try {
var transaction = db.transaction([FS.DB_STORE_NAME], 'readonly');
} catch(e) {
onerror(e);
return;
|
|
|
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
|
onerror = onerror || (() => {});
var indexedDB = FS.indexedDB();
try {
var openRequest = indexedDB.open(FS.DB_NAME(), FS.DB_VERSION);
} catch (e) {
return onerror(e);
}
openRequest.onupgradeneeded = onerror;
openRequest.onsuccess = () => {
var db = openRequest.result;
try {
var transaction = db.transaction([FS.DB_STORE_NAME], 'readonly');
} catch(e) {
onerror(e);
return;
|
︙ | | | ︙ | |
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
|
};
openRequest.onerror = onerror;
}};
var SYSCALLS = {DEFAULT_POLLMASK:5,calculateAt:function(dirfd, path, allowEmpty) {
if (PATH.isAbs(path)) {
return path;
}
// relative path
var dir;
if (dirfd === -100) {
dir = FS.cwd();
} else {
var dirstream = SYSCALLS.getStreamFromFD(dirfd);
dir = dirstream.path;
}
if (path.length == 0) {
if (!allowEmpty) {
throw new FS.ErrnoError(44);;
}
return dir;
}
return PATH.join2(dir, path);
},doStat:function(func, path, buf) {
try {
var stat = func(path);
} catch (e) {
if (e && e.node && PATH.normalize(path) !== PATH.normalize(FS.getPath(e.node))) {
// an error occurred while trying to look up the path; we should just report ENOTDIR
return -54;
}
throw e;
}
HEAP32[((buf)>>2)] = stat.dev;
HEAP32[(((buf)+(8))>>2)] = stat.ino;
HEAP32[(((buf)+(12))>>2)] = stat.mode;
|
|
|
|
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
|
};
openRequest.onerror = onerror;
}};
var SYSCALLS = {DEFAULT_POLLMASK:5,calculateAt:function(dirfd, path, allowEmpty) {
if (PATH.isAbs(path)) {
return path;
}
var dir;
if (dirfd === -100) {
dir = FS.cwd();
} else {
var dirstream = SYSCALLS.getStreamFromFD(dirfd);
dir = dirstream.path;
}
if (path.length == 0) {
if (!allowEmpty) {
throw new FS.ErrnoError(44);;
}
return dir;
}
return PATH.join2(dir, path);
},doStat:function(func, path, buf) {
try {
var stat = func(path);
} catch (e) {
if (e && e.node && PATH.normalize(path) !== PATH.normalize(FS.getPath(e.node))) {
return -54;
}
throw e;
}
HEAP32[((buf)>>2)] = stat.dev;
HEAP32[(((buf)+(8))>>2)] = stat.ino;
HEAP32[(((buf)+(12))>>2)] = stat.mode;
|
︙ | | | ︙ | |
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
|
(tempI64 = [stat.ino>>>0,(tempDouble=stat.ino,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((buf)+(104))>>2)] = tempI64[0],HEAP32[(((buf)+(108))>>2)] = tempI64[1]);
return 0;
},doMsync:function(addr, stream, len, flags, offset) {
if (!FS.isFile(stream.node.mode)) {
throw new FS.ErrnoError(43);
}
if (flags & 2) {
// MAP_PRIVATE calls need not to be synced back to underlying fs
return 0;
}
var buffer = HEAPU8.slice(addr, addr + len);
FS.msync(stream, buffer, offset, len, flags);
},varargs:undefined,get:function() {
SYSCALLS.varargs += 4;
var ret = HEAP32[(((SYSCALLS.varargs)-(4))>>2)];
|
|
|
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
|
(tempI64 = [stat.ino>>>0,(tempDouble=stat.ino,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((buf)+(104))>>2)] = tempI64[0],HEAP32[(((buf)+(108))>>2)] = tempI64[1]);
return 0;
},doMsync:function(addr, stream, len, flags, offset) {
if (!FS.isFile(stream.node.mode)) {
throw new FS.ErrnoError(43);
}
if (flags & 2) {
return 0;
}
var buffer = HEAPU8.slice(addr, addr + len);
FS.msync(stream, buffer, offset, len, flags);
},varargs:undefined,get:function() {
SYSCALLS.varargs += 4;
var ret = HEAP32[(((SYSCALLS.varargs)-(4))>>2)];
|
︙ | | | ︙ | |
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
|
function ___syscall_faccessat(dirfd, path, amode, flags) {
try {
path = SYSCALLS.getStr(path);
path = SYSCALLS.calculateAt(dirfd, path);
if (amode & ~7) {
// need a valid mode
return -28;
}
var lookup = FS.lookupPath(path, { follow: true });
var node = lookup.node;
if (!node) {
return -44;
}
var perms = '';
if (amode & 4) perms += 'r';
if (amode & 2) perms += 'w';
if (amode & 1) perms += 'x';
if (perms /* otherwise, they've just passed F_OK */ && FS.nodePermissions(node, perms)) {
return -2;
}
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return -e.errno;
}
|
|
|
|
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
|
function ___syscall_faccessat(dirfd, path, amode, flags) {
try {
path = SYSCALLS.getStr(path);
path = SYSCALLS.calculateAt(dirfd, path);
if (amode & ~7) {
return -28;
}
var lookup = FS.lookupPath(path, { follow: true });
var node = lookup.node;
if (!node) {
return -44;
}
var perms = '';
if (amode & 4) perms += 'r';
if (amode & 2) perms += 'w';
if (amode & 1) perms += 'x';
if (perms && FS.nodePermissions(node, perms)) {
return -2;
}
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return -e.errno;
}
|
︙ | | | ︙ | |
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
|
}
var newStream;
newStream = FS.createStream(stream, arg);
return newStream.fd;
}
case 1:
case 2:
return 0; // FD_CLOEXEC makes no sense for a single process.
case 3:
return stream.flags;
case 4: {
var arg = SYSCALLS.get();
stream.flags |= arg;
return 0;
}
case 5:
/* case 5: Currently in musl F_GETLK64 has same value as F_GETLK, so omitted to avoid duplicate case blocks. If that changes, uncomment this */ {
var arg = SYSCALLS.get();
var offset = 0;
// We're always unlocked.
HEAP16[(((arg)+(offset))>>1)] = 2;
return 0;
}
case 6:
case 7:
/* case 6: Currently in musl F_SETLK64 has same value as F_SETLK, so omitted to avoid duplicate case blocks. If that changes, uncomment this */
/* case 7: Currently in musl F_SETLKW64 has same value as F_SETLKW, so omitted to avoid duplicate case blocks. If that changes, uncomment this */
return 0; // Pretend that the locking is successful.
case 16:
case 8:
return -28; // These are for sockets. We don't have them fully implemented yet.
case 9:
// musl trusts getown return values, due to a bug where they must be, as they overlap with errors. just return -1 here, so fcntl() returns that, and we set errno ourselves.
setErrNo(28);
return -1;
default: {
return -28;
}
}
} catch (e) {
|
|
<
>
|
|
|
|
|
|
|
3220
3221
3222
3223
3224
3225
3226
3227
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3229
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3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
|
}
var newStream;
newStream = FS.createStream(stream, arg);
return newStream.fd;
}
case 1:
case 2:
return 0;
case 3:
return stream.flags;
case 4: {
var arg = SYSCALLS.get();
stream.flags |= arg;
return 0;
}
case 5:
{
var arg = SYSCALLS.get();
var offset = 0;
HEAP16[(((arg)+(offset))>>1)] = 2;
return 0;
}
case 6:
case 7:
return 0;
case 16:
case 8:
return -28;
case 9:
setErrNo(28);
return -1;
default: {
return -28;
}
}
} catch (e) {
|
︙ | | | ︙ | |
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
|
var MAX_INT53 = 9007199254740992;
var MIN_INT53 = -9007199254740992;
function bigintToI53Checked(num) {
return (num < MIN_INT53 || num > MAX_INT53) ? NaN : Number(num);
}
function ___syscall_ftruncate64(fd, /** @type {!BigInt} */ length) {
try {
length = bigintToI53Checked(length); if (isNaN(length)) return -61;
FS.ftruncate(fd, length);
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
|
|
|
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
|
var MAX_INT53 = 9007199254740992;
var MIN_INT53 = -9007199254740992;
function bigintToI53Checked(num) {
return (num < MIN_INT53 || num > MAX_INT53) ? NaN : Number(num);
}
function ___syscall_ftruncate64(fd, length) {
try {
length = bigintToI53Checked(length); if (isNaN(length)) return -61;
FS.ftruncate(fd, length);
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
|
︙ | | | ︙ | |
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
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3389
3390
3391
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3406
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3408
3409
3410
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3412
3413
3414
3415
3416
3417
3418
3419
|
case 21510:
case 21511:
case 21512:
case 21506:
case 21507:
case 21508: {
if (!stream.tty) return -59;
return 0; // no-op, not actually adjusting terminal settings
}
case 21519: {
if (!stream.tty) return -59;
var argp = SYSCALLS.get();
HEAP32[((argp)>>2)] = 0;
return 0;
}
case 21520: {
if (!stream.tty) return -59;
return -28; // not supported
}
case 21531: {
var argp = SYSCALLS.get();
return FS.ioctl(stream, op, argp);
}
case 21523: {
// TODO: in theory we should write to the winsize struct that gets
// passed in, but for now musl doesn't read anything on it
if (!stream.tty) return -59;
return 0;
}
case 21524: {
// TODO: technically, this ioctl call should change the window size.
// but, since emscripten doesn't have any concept of a terminal window
// yet, we'll just silently throw it away as we do TIOCGWINSZ
if (!stream.tty) return -59;
return 0;
}
default: return -28; // not supported
}
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return -e.errno;
}
}
|
|
|
|
|
|
|
|
|
|
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
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3342
3343
3344
3345
3346
3347
3348
3349
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3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
|
case 21510:
case 21511:
case 21512:
case 21506:
case 21507:
case 21508: {
if (!stream.tty) return -59;
return 0;
}
case 21519: {
if (!stream.tty) return -59;
var argp = SYSCALLS.get();
HEAP32[((argp)>>2)] = 0;
return 0;
}
case 21520: {
if (!stream.tty) return -59;
return -28;
}
case 21531: {
var argp = SYSCALLS.get();
return FS.ioctl(stream, op, argp);
}
case 21523: {
if (!stream.tty) return -59;
return 0;
}
case 21524: {
if (!stream.tty) return -59;
return 0;
}
default: return -28;
}
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return -e.errno;
}
}
|
︙ | | | ︙ | |
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
|
}
function ___syscall_mkdirat(dirfd, path, mode) {
try {
path = SYSCALLS.getStr(path);
path = SYSCALLS.calculateAt(dirfd, path);
// remove a trailing slash, if one - /a/b/ has basename of '', but
// we want to create b in the context of this function
path = PATH.normalize(path);
if (path[path.length-1] === '/') path = path.substr(0, path.length-1);
FS.mkdir(path, mode, 0);
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return -e.errno;
|
|
|
|
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
|
}
function ___syscall_mkdirat(dirfd, path, mode) {
try {
path = SYSCALLS.getStr(path);
path = SYSCALLS.calculateAt(dirfd, path);
path = PATH.normalize(path);
if (path[path.length-1] === '/') path = path.substr(0, path.length-1);
FS.mkdir(path, mode, 0);
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return -e.errno;
|
︙ | | | ︙ | |
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
|
path = SYSCALLS.calculateAt(dirfd, path);
if (bufsize <= 0) return -28;
var ret = FS.readlink(path);
var len = Math.min(bufsize, lengthBytesUTF8(ret));
var endChar = HEAP8[buf+len];
stringToUTF8(ret, buf, bufsize+1);
// readlink is one of the rare functions that write out a C string, but does never append a null to the output buffer(!)
// stringToUTF8() always appends a null byte, so restore the character under the null byte after the write.
HEAP8[buf+len] = endChar;
return len;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return -e.errno;
}
}
|
|
|
|
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
|
path = SYSCALLS.calculateAt(dirfd, path);
if (bufsize <= 0) return -28;
var ret = FS.readlink(path);
var len = Math.min(bufsize, lengthBytesUTF8(ret));
var endChar = HEAP8[buf+len];
stringToUTF8(ret, buf, bufsize+1);
HEAP8[buf+len] = endChar;
return len;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return -e.errno;
}
}
|
︙ | | | ︙ | |
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
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3591
3592
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3594
3595
3596
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3598
3599
3600
3601
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3604
3605
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3609
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3612
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3615
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3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
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3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
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3645
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3648
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3752
3753
3754
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3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
|
HEAP32[(((tmPtr)+(24))>>2)] = date.getDay();
var start = new Date(date.getFullYear(), 0, 1);
var yday = ((date.getTime() - start.getTime()) / (1000 * 60 * 60 * 24))|0;
HEAP32[(((tmPtr)+(28))>>2)] = yday;
HEAP32[(((tmPtr)+(36))>>2)] = -(date.getTimezoneOffset() * 60);
// Attention: DST is in December in South, and some regions don't have DST at all.
var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
var winterOffset = start.getTimezoneOffset();
var dst = (summerOffset != winterOffset && date.getTimezoneOffset() == Math.min(winterOffset, summerOffset))|0;
HEAP32[(((tmPtr)+(32))>>2)] = dst;
}
function allocateUTF8(str) {
var size = lengthBytesUTF8(str) + 1;
var ret = _malloc(size);
if (ret) stringToUTF8Array(str, HEAP8, ret, size);
return ret;
}
function _tzset_impl(timezone, daylight, tzname) {
var currentYear = new Date().getFullYear();
var winter = new Date(currentYear, 0, 1);
var summer = new Date(currentYear, 6, 1);
var winterOffset = winter.getTimezoneOffset();
var summerOffset = summer.getTimezoneOffset();
// Local standard timezone offset. Local standard time is not adjusted for daylight savings.
// This code uses the fact that getTimezoneOffset returns a greater value during Standard Time versus Daylight Saving Time (DST).
// Thus it determines the expected output during Standard Time, and it compares whether the output of the given date the same (Standard) or less (DST).
var stdTimezoneOffset = Math.max(winterOffset, summerOffset);
// timezone is specified as seconds west of UTC ("The external variable
// `timezone` shall be set to the difference, in seconds, between
// Coordinated Universal Time (UTC) and local standard time."), the same
// as returned by stdTimezoneOffset.
// See http://pubs.opengroup.org/onlinepubs/009695399/functions/tzset.html
HEAP32[((timezone)>>2)] = stdTimezoneOffset * 60;
HEAP32[((daylight)>>2)] = Number(winterOffset != summerOffset);
function extractZone(date) {
var match = date.toTimeString().match(/\(([A-Za-z ]+)\)$/);
return match ? match[1] : "GMT";
};
var winterName = extractZone(winter);
var summerName = extractZone(summer);
var winterNamePtr = allocateUTF8(winterName);
var summerNamePtr = allocateUTF8(summerName);
if (summerOffset < winterOffset) {
// Northern hemisphere
HEAPU32[((tzname)>>2)] = winterNamePtr;
HEAPU32[(((tzname)+(4))>>2)] = summerNamePtr;
} else {
HEAPU32[((tzname)>>2)] = summerNamePtr;
HEAPU32[(((tzname)+(4))>>2)] = winterNamePtr;
}
}
function __tzset_js(timezone, daylight, tzname) {
// TODO: Use (malleable) environment variables instead of system settings.
if (__tzset_js.called) return;
__tzset_js.called = true;
_tzset_impl(timezone, daylight, tzname);
}
function _emscripten_console_warn(str) {
console.warn(UTF8ToString(str));
}
function _emscripten_date_now() {
return Date.now();
}
var _emscripten_get_now;_emscripten_get_now = () => performance.now();
;
function getHeapMax() {
// Stay one Wasm page short of 4GB: while e.g. Chrome is able to allocate
// full 4GB Wasm memories, the size will wrap back to 0 bytes in Wasm side
// for any code that deals with heap sizes, which would require special
// casing all heap size related code to treat 0 specially.
return 2147483648;
}
function emscripten_realloc_buffer(size) {
try {
// round size grow request up to wasm page size (fixed 64KB per spec)
wasmMemory.grow((size - buffer.byteLength + 65535) >>> 16); // .grow() takes a delta compared to the previous size
updateGlobalBufferAndViews(wasmMemory.buffer);
return 1 /*success*/;
} catch(e) {
}
// implicit 0 return to save code size (caller will cast "undefined" into 0
// anyhow)
}
function _emscripten_resize_heap(requestedSize) {
var oldSize = HEAPU8.length;
requestedSize = requestedSize >>> 0;
// With multithreaded builds, races can happen (another thread might increase the size
// in between), so return a failure, and let the caller retry.
// Memory resize rules:
// 1. Always increase heap size to at least the requested size, rounded up
// to next page multiple.
// 2a. If MEMORY_GROWTH_LINEAR_STEP == -1, excessively resize the heap
// geometrically: increase the heap size according to
// MEMORY_GROWTH_GEOMETRIC_STEP factor (default +20%), At most
// overreserve by MEMORY_GROWTH_GEOMETRIC_CAP bytes (default 96MB).
// 2b. If MEMORY_GROWTH_LINEAR_STEP != -1, excessively resize the heap
// linearly: increase the heap size by at least
// MEMORY_GROWTH_LINEAR_STEP bytes.
// 3. Max size for the heap is capped at 2048MB-WASM_PAGE_SIZE, or by
// MAXIMUM_MEMORY, or by ASAN limit, depending on which is smallest
// 4. If we were unable to allocate as much memory, it may be due to
// over-eager decision to excessively reserve due to (3) above.
// Hence if an allocation fails, cut down on the amount of excess
// growth, in an attempt to succeed to perform a smaller allocation.
// A limit is set for how much we can grow. We should not exceed that
// (the wasm binary specifies it, so if we tried, we'd fail anyhow).
var maxHeapSize = getHeapMax();
if (requestedSize > maxHeapSize) {
return false;
}
let alignUp = (x, multiple) => x + (multiple - x % multiple) % multiple;
// Loop through potential heap size increases. If we attempt a too eager
// reservation that fails, cut down on the attempted size and reserve a
// smaller bump instead. (max 3 times, chosen somewhat arbitrarily)
for (var cutDown = 1; cutDown <= 4; cutDown *= 2) {
var overGrownHeapSize = oldSize * (1 + 0.2 / cutDown); // ensure geometric growth
// but limit overreserving (default to capping at +96MB overgrowth at most)
overGrownHeapSize = Math.min(overGrownHeapSize, requestedSize + 100663296 );
var newSize = Math.min(maxHeapSize, alignUp(Math.max(requestedSize, overGrownHeapSize), 65536));
var replacement = emscripten_realloc_buffer(newSize);
if (replacement) {
return true;
}
}
return false;
}
var ENV = {};
function getExecutableName() {
return thisProgram || './this.program';
}
function getEnvStrings() {
if (!getEnvStrings.strings) {
// Default values.
// Browser language detection #8751
var lang = ((typeof navigator == 'object' && navigator.languages && navigator.languages[0]) || 'C').replace('-', '_') + '.UTF-8';
var env = {
'USER': 'web_user',
'LOGNAME': 'web_user',
'PATH': '/',
'PWD': '/',
'HOME': '/home/web_user',
'LANG': lang,
'_': getExecutableName()
};
// Apply the user-provided values, if any.
for (var x in ENV) {
// x is a key in ENV; if ENV[x] is undefined, that means it was
// explicitly set to be so. We allow user code to do that to
// force variables with default values to remain unset.
if (ENV[x] === undefined) delete env[x];
else env[x] = ENV[x];
}
var strings = [];
for (var x in env) {
strings.push(x + '=' + env[x]);
}
getEnvStrings.strings = strings;
}
return getEnvStrings.strings;
}
/** @param {boolean=} dontAddNull */
function writeAsciiToMemory(str, buffer, dontAddNull) {
for (var i = 0; i < str.length; ++i) {
HEAP8[((buffer++)>>0)] = str.charCodeAt(i);
}
// Null-terminate the pointer to the HEAP.
if (!dontAddNull) HEAP8[((buffer)>>0)] = 0;
}
function _environ_get(__environ, environ_buf) {
var bufSize = 0;
getEnvStrings().forEach(function(string, i) {
var ptr = environ_buf + bufSize;
HEAPU32[(((__environ)+(i*4))>>2)] = ptr;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
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3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
|
HEAP32[(((tmPtr)+(24))>>2)] = date.getDay();
var start = new Date(date.getFullYear(), 0, 1);
var yday = ((date.getTime() - start.getTime()) / (1000 * 60 * 60 * 24))|0;
HEAP32[(((tmPtr)+(28))>>2)] = yday;
HEAP32[(((tmPtr)+(36))>>2)] = -(date.getTimezoneOffset() * 60);
var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
var winterOffset = start.getTimezoneOffset();
var dst = (summerOffset != winterOffset && date.getTimezoneOffset() == Math.min(winterOffset, summerOffset))|0;
HEAP32[(((tmPtr)+(32))>>2)] = dst;
}
function allocateUTF8(str) {
var size = lengthBytesUTF8(str) + 1;
var ret = _malloc(size);
if (ret) stringToUTF8Array(str, HEAP8, ret, size);
return ret;
}
function _tzset_impl(timezone, daylight, tzname) {
var currentYear = new Date().getFullYear();
var winter = new Date(currentYear, 0, 1);
var summer = new Date(currentYear, 6, 1);
var winterOffset = winter.getTimezoneOffset();
var summerOffset = summer.getTimezoneOffset();
var stdTimezoneOffset = Math.max(winterOffset, summerOffset);
HEAP32[((timezone)>>2)] = stdTimezoneOffset * 60;
HEAP32[((daylight)>>2)] = Number(winterOffset != summerOffset);
function extractZone(date) {
var match = date.toTimeString().match(/\(([A-Za-z ]+)\)$/);
return match ? match[1] : "GMT";
};
var winterName = extractZone(winter);
var summerName = extractZone(summer);
var winterNamePtr = allocateUTF8(winterName);
var summerNamePtr = allocateUTF8(summerName);
if (summerOffset < winterOffset) {
HEAPU32[((tzname)>>2)] = winterNamePtr;
HEAPU32[(((tzname)+(4))>>2)] = summerNamePtr;
} else {
HEAPU32[((tzname)>>2)] = summerNamePtr;
HEAPU32[(((tzname)+(4))>>2)] = winterNamePtr;
}
}
function __tzset_js(timezone, daylight, tzname) {
if (__tzset_js.called) return;
__tzset_js.called = true;
_tzset_impl(timezone, daylight, tzname);
}
function _emscripten_console_warn(str) {
console.warn(UTF8ToString(str));
}
function _emscripten_date_now() {
return Date.now();
}
var _emscripten_get_now;_emscripten_get_now = () => performance.now();
;
function getHeapMax() {
return 2147483648;
}
function emscripten_realloc_buffer(size) {
try {
wasmMemory.grow((size - buffer.byteLength + 65535) >>> 16);
updateGlobalBufferAndViews(wasmMemory.buffer);
return 1 ;
} catch(e) {
}
}
function _emscripten_resize_heap(requestedSize) {
var oldSize = HEAPU8.length;
requestedSize = requestedSize >>> 0;
var maxHeapSize = getHeapMax();
if (requestedSize > maxHeapSize) {
return false;
}
let alignUp = (x, multiple) => x + (multiple - x % multiple) % multiple;
for (var cutDown = 1; cutDown <= 4; cutDown *= 2) {
var overGrownHeapSize = oldSize * (1 + 0.2 / cutDown);
overGrownHeapSize = Math.min(overGrownHeapSize, requestedSize + 100663296 );
var newSize = Math.min(maxHeapSize, alignUp(Math.max(requestedSize, overGrownHeapSize), 65536));
var replacement = emscripten_realloc_buffer(newSize);
if (replacement) {
return true;
}
}
return false;
}
var ENV = {};
function getExecutableName() {
return thisProgram || './this.program';
}
function getEnvStrings() {
if (!getEnvStrings.strings) {
var lang = ((typeof navigator == 'object' && navigator.languages && navigator.languages[0]) || 'C').replace('-', '_') + '.UTF-8';
var env = {
'USER': 'web_user',
'LOGNAME': 'web_user',
'PATH': '/',
'PWD': '/',
'HOME': '/home/web_user',
'LANG': lang,
'_': getExecutableName()
};
for (var x in ENV) {
if (ENV[x] === undefined) delete env[x];
else env[x] = ENV[x];
}
var strings = [];
for (var x in env) {
strings.push(x + '=' + env[x]);
}
getEnvStrings.strings = strings;
}
return getEnvStrings.strings;
}
function writeAsciiToMemory(str, buffer, dontAddNull) {
for (var i = 0; i < str.length; ++i) {
HEAP8[((buffer++)>>0)] = str.charCodeAt(i);
}
if (!dontAddNull) HEAP8[((buffer)>>0)] = 0;
}
function _environ_get(__environ, environ_buf) {
var bufSize = 0;
getEnvStrings().forEach(function(string, i) {
var ptr = environ_buf + bufSize;
HEAPU32[(((__environ)+(i*4))>>2)] = ptr;
|
︙ | | | ︙ | |
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|
}
}
function _fd_fdstat_get(fd, pbuf) {
try {
var stream = SYSCALLS.getStreamFromFD(fd);
// All character devices are terminals (other things a Linux system would
// assume is a character device, like the mouse, we have special APIs for).
var type = stream.tty ? 2 :
FS.isDir(stream.mode) ? 3 :
FS.isLink(stream.mode) ? 7 :
4;
HEAP8[((pbuf)>>0)] = type;
// TODO HEAP16[(((pbuf)+(2))>>1)] = ?;
// TODO (tempI64 = [?>>>0,(tempDouble=?,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((pbuf)+(8))>>2)] = tempI64[0],HEAP32[(((pbuf)+(12))>>2)] = tempI64[1]);
// TODO (tempI64 = [?>>>0,(tempDouble=?,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((pbuf)+(16))>>2)] = tempI64[0],HEAP32[(((pbuf)+(20))>>2)] = tempI64[1]);
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
/** @param {number=} offset */
function doReadv(stream, iov, iovcnt, offset) {
var ret = 0;
for (var i = 0; i < iovcnt; i++) {
var ptr = HEAPU32[((iov)>>2)];
var len = HEAPU32[(((iov)+(4))>>2)];
iov += 8;
var curr = FS.read(stream, HEAP8,ptr, len, offset);
if (curr < 0) return -1;
ret += curr;
if (curr < len) break; // nothing more to read
}
return ret;
}
function _fd_read(fd, iov, iovcnt, pnum) {
try {
var stream = SYSCALLS.getStreamFromFD(fd);
var num = doReadv(stream, iov, iovcnt);
HEAPU32[((pnum)>>2)] = num;
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
function _fd_seek(fd, /** @type {!BigInt} */ offset, whence, newOffset) {
try {
offset = bigintToI53Checked(offset); if (isNaN(offset)) return 61;
var stream = SYSCALLS.getStreamFromFD(fd);
FS.llseek(stream, offset, whence);
(tempI64 = [stream.position>>>0,(tempDouble=stream.position,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((newOffset)>>2)] = tempI64[0],HEAP32[(((newOffset)+(4))>>2)] = tempI64[1]);
if (stream.getdents && offset === 0 && whence === 0) stream.getdents = null; // reset readdir state
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
function _fd_sync(fd) {
try {
var stream = SYSCALLS.getStreamFromFD(fd);
if (stream.stream_ops && stream.stream_ops.fsync) {
return stream.stream_ops.fsync(stream);
}
return 0; // we can't do anything synchronously; the in-memory FS is already synced to
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
/** @param {number=} offset */
function doWritev(stream, iov, iovcnt, offset) {
var ret = 0;
for (var i = 0; i < iovcnt; i++) {
var ptr = HEAPU32[((iov)>>2)];
var len = HEAPU32[(((iov)+(4))>>2)];
iov += 8;
var curr = FS.write(stream, HEAP8,ptr, len, offset);
|
|
|
|
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|
|
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|
}
}
function _fd_fdstat_get(fd, pbuf) {
try {
var stream = SYSCALLS.getStreamFromFD(fd);
var type = stream.tty ? 2 :
FS.isDir(stream.mode) ? 3 :
FS.isLink(stream.mode) ? 7 :
4;
HEAP8[((pbuf)>>0)] = type;
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
function doReadv(stream, iov, iovcnt, offset) {
var ret = 0;
for (var i = 0; i < iovcnt; i++) {
var ptr = HEAPU32[((iov)>>2)];
var len = HEAPU32[(((iov)+(4))>>2)];
iov += 8;
var curr = FS.read(stream, HEAP8,ptr, len, offset);
if (curr < 0) return -1;
ret += curr;
if (curr < len) break;
}
return ret;
}
function _fd_read(fd, iov, iovcnt, pnum) {
try {
var stream = SYSCALLS.getStreamFromFD(fd);
var num = doReadv(stream, iov, iovcnt);
HEAPU32[((pnum)>>2)] = num;
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
function _fd_seek(fd, offset, whence, newOffset) {
try {
offset = bigintToI53Checked(offset); if (isNaN(offset)) return 61;
var stream = SYSCALLS.getStreamFromFD(fd);
FS.llseek(stream, offset, whence);
(tempI64 = [stream.position>>>0,(tempDouble=stream.position,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((newOffset)>>2)] = tempI64[0],HEAP32[(((newOffset)+(4))>>2)] = tempI64[1]);
if (stream.getdents && offset === 0 && whence === 0) stream.getdents = null;
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
function _fd_sync(fd) {
try {
var stream = SYSCALLS.getStreamFromFD(fd);
if (stream.stream_ops && stream.stream_ops.fsync) {
return stream.stream_ops.fsync(stream);
}
return 0;
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
function doWritev(stream, iov, iovcnt, offset) {
var ret = 0;
for (var i = 0; i < iovcnt; i++) {
var ptr = HEAPU32[((iov)>>2)];
var len = HEAPU32[(((iov)+(4))>>2)];
iov += 8;
var curr = FS.write(stream, HEAP8,ptr, len, offset);
|
︙ | | | ︙ | |
3897
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|
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
var FSNode = /** @constructor */ function(parent, name, mode, rdev) {
if (!parent) {
parent = this; // root node sets parent to itself
}
this.parent = parent;
this.mount = parent.mount;
this.mounted = null;
this.id = FS.nextInode++;
this.name = name;
this.mode = mode;
this.node_ops = {};
this.stream_ops = {};
this.rdev = rdev;
};
var readMode = 292/*292*/ | 73/*73*/;
var writeMode = 146/*146*/;
Object.defineProperties(FSNode.prototype, {
read: {
get: /** @this{FSNode} */function() {
return (this.mode & readMode) === readMode;
},
set: /** @this{FSNode} */function(val) {
val ? this.mode |= readMode : this.mode &= ~readMode;
}
},
write: {
get: /** @this{FSNode} */function() {
return (this.mode & writeMode) === writeMode;
},
set: /** @this{FSNode} */function(val) {
val ? this.mode |= writeMode : this.mode &= ~writeMode;
}
},
isFolder: {
get: /** @this{FSNode} */function() {
return FS.isDir(this.mode);
}
},
isDevice: {
get: /** @this{FSNode} */function() {
return FS.isChrdev(this.mode);
}
}
});
FS.FSNode = FSNode;
FS.staticInit();;
var ASSERTIONS = false;
|
|
|
|
|
|
|
|
|
|
|
|
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|
} catch (e) {
if (typeof FS == 'undefined' || !(e instanceof FS.ErrnoError)) throw e;
return e.errno;
}
}
var FSNode = function(parent, name, mode, rdev) {
if (!parent) {
parent = this;
}
this.parent = parent;
this.mount = parent.mount;
this.mounted = null;
this.id = FS.nextInode++;
this.name = name;
this.mode = mode;
this.node_ops = {};
this.stream_ops = {};
this.rdev = rdev;
};
var readMode = 292 | 73;
var writeMode = 146;
Object.defineProperties(FSNode.prototype, {
read: {
get: function() {
return (this.mode & readMode) === readMode;
},
set: function(val) {
val ? this.mode |= readMode : this.mode &= ~readMode;
}
},
write: {
get: function() {
return (this.mode & writeMode) === writeMode;
},
set: function(val) {
val ? this.mode |= writeMode : this.mode &= ~writeMode;
}
},
isFolder: {
get: function() {
return FS.isDir(this.mode);
}
},
isDevice: {
get: function() {
return FS.isChrdev(this.mode);
}
}
});
FS.FSNode = FSNode;
FS.staticInit();;
var ASSERTIONS = false;
|
︙ | | | ︙ | |
3981
3982
3983
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4642
4643
4644
4645
|
"fd_read": _fd_read,
"fd_seek": _fd_seek,
"fd_sync": _fd_sync,
"fd_write": _fd_write,
"memory": wasmMemory
};
var asm = createWasm();
/** @type {function(...*):?} */
var ___wasm_call_ctors = Module["___wasm_call_ctors"] = function() {
return (___wasm_call_ctors = Module["___wasm_call_ctors"] = Module["asm"]["__wasm_call_ctors"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_msize = Module["_sqlite3_msize"] = function() {
return (_sqlite3_msize = Module["_sqlite3_msize"] = Module["asm"]["sqlite3_msize"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_vfs_find = Module["_sqlite3_vfs_find"] = function() {
return (_sqlite3_vfs_find = Module["_sqlite3_vfs_find"] = Module["asm"]["sqlite3_vfs_find"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_initialize = Module["_sqlite3_initialize"] = function() {
return (_sqlite3_initialize = Module["_sqlite3_initialize"] = Module["asm"]["sqlite3_initialize"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_vfs_register = Module["_sqlite3_vfs_register"] = function() {
return (_sqlite3_vfs_register = Module["_sqlite3_vfs_register"] = Module["asm"]["sqlite3_vfs_register"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_vfs_unregister = Module["_sqlite3_vfs_unregister"] = function() {
return (_sqlite3_vfs_unregister = Module["_sqlite3_vfs_unregister"] = Module["asm"]["sqlite3_vfs_unregister"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_malloc = Module["_sqlite3_malloc"] = function() {
return (_sqlite3_malloc = Module["_sqlite3_malloc"] = Module["asm"]["sqlite3_malloc"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_malloc64 = Module["_sqlite3_malloc64"] = function() {
return (_sqlite3_malloc64 = Module["_sqlite3_malloc64"] = Module["asm"]["sqlite3_malloc64"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_free = Module["_sqlite3_free"] = function() {
return (_sqlite3_free = Module["_sqlite3_free"] = Module["asm"]["sqlite3_free"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_realloc = Module["_sqlite3_realloc"] = function() {
return (_sqlite3_realloc = Module["_sqlite3_realloc"] = Module["asm"]["sqlite3_realloc"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_realloc64 = Module["_sqlite3_realloc64"] = function() {
return (_sqlite3_realloc64 = Module["_sqlite3_realloc64"] = Module["asm"]["sqlite3_realloc64"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_randomness = Module["_sqlite3_randomness"] = function() {
return (_sqlite3_randomness = Module["_sqlite3_randomness"] = Module["asm"]["sqlite3_randomness"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_serialize = Module["_sqlite3_serialize"] = function() {
return (_sqlite3_serialize = Module["_sqlite3_serialize"] = Module["asm"]["sqlite3_serialize"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_prepare_v2 = Module["_sqlite3_prepare_v2"] = function() {
return (_sqlite3_prepare_v2 = Module["_sqlite3_prepare_v2"] = Module["asm"]["sqlite3_prepare_v2"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_step = Module["_sqlite3_step"] = function() {
return (_sqlite3_step = Module["_sqlite3_step"] = Module["asm"]["sqlite3_step"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_column_int64 = Module["_sqlite3_column_int64"] = function() {
return (_sqlite3_column_int64 = Module["_sqlite3_column_int64"] = Module["asm"]["sqlite3_column_int64"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_column_int = Module["_sqlite3_column_int"] = function() {
return (_sqlite3_column_int = Module["_sqlite3_column_int"] = Module["asm"]["sqlite3_column_int"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_finalize = Module["_sqlite3_finalize"] = function() {
return (_sqlite3_finalize = Module["_sqlite3_finalize"] = Module["asm"]["sqlite3_finalize"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_deserialize = Module["_sqlite3_deserialize"] = function() {
return (_sqlite3_deserialize = Module["_sqlite3_deserialize"] = Module["asm"]["sqlite3_deserialize"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_reset = Module["_sqlite3_reset"] = function() {
return (_sqlite3_reset = Module["_sqlite3_reset"] = Module["asm"]["sqlite3_reset"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_clear_bindings = Module["_sqlite3_clear_bindings"] = function() {
return (_sqlite3_clear_bindings = Module["_sqlite3_clear_bindings"] = Module["asm"]["sqlite3_clear_bindings"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_value_blob = Module["_sqlite3_value_blob"] = function() {
return (_sqlite3_value_blob = Module["_sqlite3_value_blob"] = Module["asm"]["sqlite3_value_blob"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_value_text = Module["_sqlite3_value_text"] = function() {
return (_sqlite3_value_text = Module["_sqlite3_value_text"] = Module["asm"]["sqlite3_value_text"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_value_bytes = Module["_sqlite3_value_bytes"] = function() {
return (_sqlite3_value_bytes = Module["_sqlite3_value_bytes"] = Module["asm"]["sqlite3_value_bytes"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_value_double = Module["_sqlite3_value_double"] = function() {
return (_sqlite3_value_double = Module["_sqlite3_value_double"] = Module["asm"]["sqlite3_value_double"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_value_int = Module["_sqlite3_value_int"] = function() {
return (_sqlite3_value_int = Module["_sqlite3_value_int"] = Module["asm"]["sqlite3_value_int"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_value_int64 = Module["_sqlite3_value_int64"] = function() {
return (_sqlite3_value_int64 = Module["_sqlite3_value_int64"] = Module["asm"]["sqlite3_value_int64"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_value_type = Module["_sqlite3_value_type"] = function() {
return (_sqlite3_value_type = Module["_sqlite3_value_type"] = Module["asm"]["sqlite3_value_type"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_blob = Module["_sqlite3_result_blob"] = function() {
return (_sqlite3_result_blob = Module["_sqlite3_result_blob"] = Module["asm"]["sqlite3_result_blob"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_double = Module["_sqlite3_result_double"] = function() {
return (_sqlite3_result_double = Module["_sqlite3_result_double"] = Module["asm"]["sqlite3_result_double"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_error = Module["_sqlite3_result_error"] = function() {
return (_sqlite3_result_error = Module["_sqlite3_result_error"] = Module["asm"]["sqlite3_result_error"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_int = Module["_sqlite3_result_int"] = function() {
return (_sqlite3_result_int = Module["_sqlite3_result_int"] = Module["asm"]["sqlite3_result_int"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_int64 = Module["_sqlite3_result_int64"] = function() {
return (_sqlite3_result_int64 = Module["_sqlite3_result_int64"] = Module["asm"]["sqlite3_result_int64"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_null = Module["_sqlite3_result_null"] = function() {
return (_sqlite3_result_null = Module["_sqlite3_result_null"] = Module["asm"]["sqlite3_result_null"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_text = Module["_sqlite3_result_text"] = function() {
return (_sqlite3_result_text = Module["_sqlite3_result_text"] = Module["asm"]["sqlite3_result_text"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_error_toobig = Module["_sqlite3_result_error_toobig"] = function() {
return (_sqlite3_result_error_toobig = Module["_sqlite3_result_error_toobig"] = Module["asm"]["sqlite3_result_error_toobig"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_error_code = Module["_sqlite3_result_error_code"] = function() {
return (_sqlite3_result_error_code = Module["_sqlite3_result_error_code"] = Module["asm"]["sqlite3_result_error_code"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_result_error_nomem = Module["_sqlite3_result_error_nomem"] = function() {
return (_sqlite3_result_error_nomem = Module["_sqlite3_result_error_nomem"] = Module["asm"]["sqlite3_result_error_nomem"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_user_data = Module["_sqlite3_user_data"] = function() {
return (_sqlite3_user_data = Module["_sqlite3_user_data"] = Module["asm"]["sqlite3_user_data"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_aggregate_context = Module["_sqlite3_aggregate_context"] = function() {
return (_sqlite3_aggregate_context = Module["_sqlite3_aggregate_context"] = Module["asm"]["sqlite3_aggregate_context"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_column_count = Module["_sqlite3_column_count"] = function() {
return (_sqlite3_column_count = Module["_sqlite3_column_count"] = Module["asm"]["sqlite3_column_count"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_data_count = Module["_sqlite3_data_count"] = function() {
return (_sqlite3_data_count = Module["_sqlite3_data_count"] = Module["asm"]["sqlite3_data_count"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_column_blob = Module["_sqlite3_column_blob"] = function() {
return (_sqlite3_column_blob = Module["_sqlite3_column_blob"] = Module["asm"]["sqlite3_column_blob"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_column_bytes = Module["_sqlite3_column_bytes"] = function() {
return (_sqlite3_column_bytes = Module["_sqlite3_column_bytes"] = Module["asm"]["sqlite3_column_bytes"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_column_double = Module["_sqlite3_column_double"] = function() {
return (_sqlite3_column_double = Module["_sqlite3_column_double"] = Module["asm"]["sqlite3_column_double"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_column_text = Module["_sqlite3_column_text"] = function() {
return (_sqlite3_column_text = Module["_sqlite3_column_text"] = Module["asm"]["sqlite3_column_text"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_column_type = Module["_sqlite3_column_type"] = function() {
return (_sqlite3_column_type = Module["_sqlite3_column_type"] = Module["asm"]["sqlite3_column_type"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_column_name = Module["_sqlite3_column_name"] = function() {
return (_sqlite3_column_name = Module["_sqlite3_column_name"] = Module["asm"]["sqlite3_column_name"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_bind_blob = Module["_sqlite3_bind_blob"] = function() {
return (_sqlite3_bind_blob = Module["_sqlite3_bind_blob"] = Module["asm"]["sqlite3_bind_blob"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_bind_double = Module["_sqlite3_bind_double"] = function() {
return (_sqlite3_bind_double = Module["_sqlite3_bind_double"] = Module["asm"]["sqlite3_bind_double"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_bind_int = Module["_sqlite3_bind_int"] = function() {
return (_sqlite3_bind_int = Module["_sqlite3_bind_int"] = Module["asm"]["sqlite3_bind_int"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_bind_int64 = Module["_sqlite3_bind_int64"] = function() {
return (_sqlite3_bind_int64 = Module["_sqlite3_bind_int64"] = Module["asm"]["sqlite3_bind_int64"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_bind_null = Module["_sqlite3_bind_null"] = function() {
return (_sqlite3_bind_null = Module["_sqlite3_bind_null"] = Module["asm"]["sqlite3_bind_null"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_bind_text = Module["_sqlite3_bind_text"] = function() {
return (_sqlite3_bind_text = Module["_sqlite3_bind_text"] = Module["asm"]["sqlite3_bind_text"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_bind_parameter_count = Module["_sqlite3_bind_parameter_count"] = function() {
return (_sqlite3_bind_parameter_count = Module["_sqlite3_bind_parameter_count"] = Module["asm"]["sqlite3_bind_parameter_count"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_bind_parameter_index = Module["_sqlite3_bind_parameter_index"] = function() {
return (_sqlite3_bind_parameter_index = Module["_sqlite3_bind_parameter_index"] = Module["asm"]["sqlite3_bind_parameter_index"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_db_handle = Module["_sqlite3_db_handle"] = function() {
return (_sqlite3_db_handle = Module["_sqlite3_db_handle"] = Module["asm"]["sqlite3_db_handle"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_sql = Module["_sqlite3_sql"] = function() {
return (_sqlite3_sql = Module["_sqlite3_sql"] = Module["asm"]["sqlite3_sql"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_expanded_sql = Module["_sqlite3_expanded_sql"] = function() {
return (_sqlite3_expanded_sql = Module["_sqlite3_expanded_sql"] = Module["asm"]["sqlite3_expanded_sql"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_strglob = Module["_sqlite3_strglob"] = function() {
return (_sqlite3_strglob = Module["_sqlite3_strglob"] = Module["asm"]["sqlite3_strglob"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_strlike = Module["_sqlite3_strlike"] = function() {
return (_sqlite3_strlike = Module["_sqlite3_strlike"] = Module["asm"]["sqlite3_strlike"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_exec = Module["_sqlite3_exec"] = function() {
return (_sqlite3_exec = Module["_sqlite3_exec"] = Module["asm"]["sqlite3_exec"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_errmsg = Module["_sqlite3_errmsg"] = function() {
return (_sqlite3_errmsg = Module["_sqlite3_errmsg"] = Module["asm"]["sqlite3_errmsg"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_prepare_v3 = Module["_sqlite3_prepare_v3"] = function() {
return (_sqlite3_prepare_v3 = Module["_sqlite3_prepare_v3"] = Module["asm"]["sqlite3_prepare_v3"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_libversion = Module["_sqlite3_libversion"] = function() {
return (_sqlite3_libversion = Module["_sqlite3_libversion"] = Module["asm"]["sqlite3_libversion"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_libversion_number = Module["_sqlite3_libversion_number"] = function() {
return (_sqlite3_libversion_number = Module["_sqlite3_libversion_number"] = Module["asm"]["sqlite3_libversion_number"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_shutdown = Module["_sqlite3_shutdown"] = function() {
return (_sqlite3_shutdown = Module["_sqlite3_shutdown"] = Module["asm"]["sqlite3_shutdown"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_changes64 = Module["_sqlite3_changes64"] = function() {
return (_sqlite3_changes64 = Module["_sqlite3_changes64"] = Module["asm"]["sqlite3_changes64"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_changes = Module["_sqlite3_changes"] = function() {
return (_sqlite3_changes = Module["_sqlite3_changes"] = Module["asm"]["sqlite3_changes"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_total_changes64 = Module["_sqlite3_total_changes64"] = function() {
return (_sqlite3_total_changes64 = Module["_sqlite3_total_changes64"] = Module["asm"]["sqlite3_total_changes64"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_total_changes = Module["_sqlite3_total_changes"] = function() {
return (_sqlite3_total_changes = Module["_sqlite3_total_changes"] = Module["asm"]["sqlite3_total_changes"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_close_v2 = Module["_sqlite3_close_v2"] = function() {
return (_sqlite3_close_v2 = Module["_sqlite3_close_v2"] = Module["asm"]["sqlite3_close_v2"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_interrupt = Module["_sqlite3_interrupt"] = function() {
return (_sqlite3_interrupt = Module["_sqlite3_interrupt"] = Module["asm"]["sqlite3_interrupt"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_create_function = Module["_sqlite3_create_function"] = function() {
return (_sqlite3_create_function = Module["_sqlite3_create_function"] = Module["asm"]["sqlite3_create_function"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_create_function_v2 = Module["_sqlite3_create_function_v2"] = function() {
return (_sqlite3_create_function_v2 = Module["_sqlite3_create_function_v2"] = Module["asm"]["sqlite3_create_function_v2"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_create_window_function = Module["_sqlite3_create_window_function"] = function() {
return (_sqlite3_create_window_function = Module["_sqlite3_create_window_function"] = Module["asm"]["sqlite3_create_window_function"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_trace_v2 = Module["_sqlite3_trace_v2"] = function() {
return (_sqlite3_trace_v2 = Module["_sqlite3_trace_v2"] = Module["asm"]["sqlite3_trace_v2"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_error_offset = Module["_sqlite3_error_offset"] = function() {
return (_sqlite3_error_offset = Module["_sqlite3_error_offset"] = Module["asm"]["sqlite3_error_offset"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_extended_errcode = Module["_sqlite3_extended_errcode"] = function() {
return (_sqlite3_extended_errcode = Module["_sqlite3_extended_errcode"] = Module["asm"]["sqlite3_extended_errcode"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_errstr = Module["_sqlite3_errstr"] = function() {
return (_sqlite3_errstr = Module["_sqlite3_errstr"] = Module["asm"]["sqlite3_errstr"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_open = Module["_sqlite3_open"] = function() {
return (_sqlite3_open = Module["_sqlite3_open"] = Module["asm"]["sqlite3_open"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_open_v2 = Module["_sqlite3_open_v2"] = function() {
return (_sqlite3_open_v2 = Module["_sqlite3_open_v2"] = Module["asm"]["sqlite3_open_v2"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_extended_result_codes = Module["_sqlite3_extended_result_codes"] = function() {
return (_sqlite3_extended_result_codes = Module["_sqlite3_extended_result_codes"] = Module["asm"]["sqlite3_extended_result_codes"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_file_control = Module["_sqlite3_file_control"] = function() {
return (_sqlite3_file_control = Module["_sqlite3_file_control"] = Module["asm"]["sqlite3_file_control"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_uri_parameter = Module["_sqlite3_uri_parameter"] = function() {
return (_sqlite3_uri_parameter = Module["_sqlite3_uri_parameter"] = Module["asm"]["sqlite3_uri_parameter"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_uri_key = Module["_sqlite3_uri_key"] = function() {
return (_sqlite3_uri_key = Module["_sqlite3_uri_key"] = Module["asm"]["sqlite3_uri_key"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_uri_boolean = Module["_sqlite3_uri_boolean"] = function() {
return (_sqlite3_uri_boolean = Module["_sqlite3_uri_boolean"] = Module["asm"]["sqlite3_uri_boolean"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_uri_int64 = Module["_sqlite3_uri_int64"] = function() {
return (_sqlite3_uri_int64 = Module["_sqlite3_uri_int64"] = Module["asm"]["sqlite3_uri_int64"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_db_name = Module["_sqlite3_db_name"] = function() {
return (_sqlite3_db_name = Module["_sqlite3_db_name"] = Module["asm"]["sqlite3_db_name"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_db_filename = Module["_sqlite3_db_filename"] = function() {
return (_sqlite3_db_filename = Module["_sqlite3_db_filename"] = Module["asm"]["sqlite3_db_filename"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_compileoption_used = Module["_sqlite3_compileoption_used"] = function() {
return (_sqlite3_compileoption_used = Module["_sqlite3_compileoption_used"] = Module["asm"]["sqlite3_compileoption_used"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_compileoption_get = Module["_sqlite3_compileoption_get"] = function() {
return (_sqlite3_compileoption_get = Module["_sqlite3_compileoption_get"] = Module["asm"]["sqlite3_compileoption_get"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_sourceid = Module["_sqlite3_sourceid"] = function() {
return (_sqlite3_sourceid = Module["_sqlite3_sourceid"] = Module["asm"]["sqlite3_sourceid"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_pstack_ptr = Module["_sqlite3_wasm_pstack_ptr"] = function() {
return (_sqlite3_wasm_pstack_ptr = Module["_sqlite3_wasm_pstack_ptr"] = Module["asm"]["sqlite3_wasm_pstack_ptr"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_pstack_restore = Module["_sqlite3_wasm_pstack_restore"] = function() {
return (_sqlite3_wasm_pstack_restore = Module["_sqlite3_wasm_pstack_restore"] = Module["asm"]["sqlite3_wasm_pstack_restore"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_pstack_alloc = Module["_sqlite3_wasm_pstack_alloc"] = function() {
return (_sqlite3_wasm_pstack_alloc = Module["_sqlite3_wasm_pstack_alloc"] = Module["asm"]["sqlite3_wasm_pstack_alloc"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_pstack_remaining = Module["_sqlite3_wasm_pstack_remaining"] = function() {
return (_sqlite3_wasm_pstack_remaining = Module["_sqlite3_wasm_pstack_remaining"] = Module["asm"]["sqlite3_wasm_pstack_remaining"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_pstack_quota = Module["_sqlite3_wasm_pstack_quota"] = function() {
return (_sqlite3_wasm_pstack_quota = Module["_sqlite3_wasm_pstack_quota"] = Module["asm"]["sqlite3_wasm_pstack_quota"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_db_error = Module["_sqlite3_wasm_db_error"] = function() {
return (_sqlite3_wasm_db_error = Module["_sqlite3_wasm_db_error"] = Module["asm"]["sqlite3_wasm_db_error"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_test_struct = Module["_sqlite3_wasm_test_struct"] = function() {
return (_sqlite3_wasm_test_struct = Module["_sqlite3_wasm_test_struct"] = Module["asm"]["sqlite3_wasm_test_struct"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_enum_json = Module["_sqlite3_wasm_enum_json"] = function() {
return (_sqlite3_wasm_enum_json = Module["_sqlite3_wasm_enum_json"] = Module["asm"]["sqlite3_wasm_enum_json"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_vfs_unlink = Module["_sqlite3_wasm_vfs_unlink"] = function() {
return (_sqlite3_wasm_vfs_unlink = Module["_sqlite3_wasm_vfs_unlink"] = Module["asm"]["sqlite3_wasm_vfs_unlink"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_db_vfs = Module["_sqlite3_wasm_db_vfs"] = function() {
return (_sqlite3_wasm_db_vfs = Module["_sqlite3_wasm_db_vfs"] = Module["asm"]["sqlite3_wasm_db_vfs"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_db_reset = Module["_sqlite3_wasm_db_reset"] = function() {
return (_sqlite3_wasm_db_reset = Module["_sqlite3_wasm_db_reset"] = Module["asm"]["sqlite3_wasm_db_reset"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_db_export_chunked = Module["_sqlite3_wasm_db_export_chunked"] = function() {
return (_sqlite3_wasm_db_export_chunked = Module["_sqlite3_wasm_db_export_chunked"] = Module["asm"]["sqlite3_wasm_db_export_chunked"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_db_serialize = Module["_sqlite3_wasm_db_serialize"] = function() {
return (_sqlite3_wasm_db_serialize = Module["_sqlite3_wasm_db_serialize"] = Module["asm"]["sqlite3_wasm_db_serialize"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_kvvfsMakeKeyOnPstack = Module["_sqlite3_wasm_kvvfsMakeKeyOnPstack"] = function() {
return (_sqlite3_wasm_kvvfsMakeKeyOnPstack = Module["_sqlite3_wasm_kvvfsMakeKeyOnPstack"] = Module["asm"]["sqlite3_wasm_kvvfsMakeKeyOnPstack"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_kvvfs_methods = Module["_sqlite3_wasm_kvvfs_methods"] = function() {
return (_sqlite3_wasm_kvvfs_methods = Module["_sqlite3_wasm_kvvfs_methods"] = Module["asm"]["sqlite3_wasm_kvvfs_methods"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_init_wasmfs = Module["_sqlite3_wasm_init_wasmfs"] = function() {
return (_sqlite3_wasm_init_wasmfs = Module["_sqlite3_wasm_init_wasmfs"] = Module["asm"]["sqlite3_wasm_init_wasmfs"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_test_intptr = Module["_sqlite3_wasm_test_intptr"] = function() {
return (_sqlite3_wasm_test_intptr = Module["_sqlite3_wasm_test_intptr"] = Module["asm"]["sqlite3_wasm_test_intptr"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_test_int64_max = Module["_sqlite3_wasm_test_int64_max"] = function() {
return (_sqlite3_wasm_test_int64_max = Module["_sqlite3_wasm_test_int64_max"] = Module["asm"]["sqlite3_wasm_test_int64_max"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_test_int64_min = Module["_sqlite3_wasm_test_int64_min"] = function() {
return (_sqlite3_wasm_test_int64_min = Module["_sqlite3_wasm_test_int64_min"] = Module["asm"]["sqlite3_wasm_test_int64_min"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_test_int64_times2 = Module["_sqlite3_wasm_test_int64_times2"] = function() {
return (_sqlite3_wasm_test_int64_times2 = Module["_sqlite3_wasm_test_int64_times2"] = Module["asm"]["sqlite3_wasm_test_int64_times2"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_test_int64_minmax = Module["_sqlite3_wasm_test_int64_minmax"] = function() {
return (_sqlite3_wasm_test_int64_minmax = Module["_sqlite3_wasm_test_int64_minmax"] = Module["asm"]["sqlite3_wasm_test_int64_minmax"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_test_int64ptr = Module["_sqlite3_wasm_test_int64ptr"] = function() {
return (_sqlite3_wasm_test_int64ptr = Module["_sqlite3_wasm_test_int64ptr"] = Module["asm"]["sqlite3_wasm_test_int64ptr"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_test_stack_overflow = Module["_sqlite3_wasm_test_stack_overflow"] = function() {
return (_sqlite3_wasm_test_stack_overflow = Module["_sqlite3_wasm_test_stack_overflow"] = Module["asm"]["sqlite3_wasm_test_stack_overflow"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _sqlite3_wasm_test_str_hello = Module["_sqlite3_wasm_test_str_hello"] = function() {
return (_sqlite3_wasm_test_str_hello = Module["_sqlite3_wasm_test_str_hello"] = Module["asm"]["sqlite3_wasm_test_str_hello"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _malloc = Module["_malloc"] = function() {
return (_malloc = Module["_malloc"] = Module["asm"]["malloc"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var ___errno_location = Module["___errno_location"] = function() {
return (___errno_location = Module["___errno_location"] = Module["asm"]["__errno_location"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var _free = Module["_free"] = function() {
return (_free = Module["_free"] = Module["asm"]["free"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var stackSave = Module["stackSave"] = function() {
return (stackSave = Module["stackSave"] = Module["asm"]["stackSave"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var stackRestore = Module["stackRestore"] = function() {
return (stackRestore = Module["stackRestore"] = Module["asm"]["stackRestore"]).apply(null, arguments);
};
/** @type {function(...*):?} */
var stackAlloc = Module["stackAlloc"] = function() {
return (stackAlloc = Module["stackAlloc"] = Module["asm"]["stackAlloc"]).apply(null, arguments);
};
// === Auto-generated postamble setup entry stuff ===
Module["wasmMemory"] = wasmMemory;
Module["FS"] = FS;
var calledRun;
dependenciesFulfilled = function runCaller() {
// If run has never been called, and we should call run (INVOKE_RUN is true, and Module.noInitialRun is not false)
if (!calledRun) run();
if (!calledRun) dependenciesFulfilled = runCaller; // try this again later, after new deps are fulfilled
};
/** @type {function(Array=)} */
function run(args) {
args = args || arguments_;
if (runDependencies > 0) {
return;
}
preRun();
// a preRun added a dependency, run will be called later
if (runDependencies > 0) {
return;
}
function doRun() {
// run may have just been called through dependencies being fulfilled just in this very frame,
// or while the async setStatus time below was happening
if (calledRun) return;
calledRun = true;
Module['calledRun'] = true;
if (ABORT) return;
initRuntime();
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|
"fd_read": _fd_read,
"fd_seek": _fd_seek,
"fd_sync": _fd_sync,
"fd_write": _fd_write,
"memory": wasmMemory
};
var asm = createWasm();
var ___wasm_call_ctors = Module["___wasm_call_ctors"] = function() {
return (___wasm_call_ctors = Module["___wasm_call_ctors"] = Module["asm"]["__wasm_call_ctors"]).apply(null, arguments);
};
var _sqlite3_msize = Module["_sqlite3_msize"] = function() {
return (_sqlite3_msize = Module["_sqlite3_msize"] = Module["asm"]["sqlite3_msize"]).apply(null, arguments);
};
var _sqlite3_vfs_find = Module["_sqlite3_vfs_find"] = function() {
return (_sqlite3_vfs_find = Module["_sqlite3_vfs_find"] = Module["asm"]["sqlite3_vfs_find"]).apply(null, arguments);
};
var _sqlite3_initialize = Module["_sqlite3_initialize"] = function() {
return (_sqlite3_initialize = Module["_sqlite3_initialize"] = Module["asm"]["sqlite3_initialize"]).apply(null, arguments);
};
var _sqlite3_vfs_register = Module["_sqlite3_vfs_register"] = function() {
return (_sqlite3_vfs_register = Module["_sqlite3_vfs_register"] = Module["asm"]["sqlite3_vfs_register"]).apply(null, arguments);
};
var _sqlite3_vfs_unregister = Module["_sqlite3_vfs_unregister"] = function() {
return (_sqlite3_vfs_unregister = Module["_sqlite3_vfs_unregister"] = Module["asm"]["sqlite3_vfs_unregister"]).apply(null, arguments);
};
var _sqlite3_malloc = Module["_sqlite3_malloc"] = function() {
return (_sqlite3_malloc = Module["_sqlite3_malloc"] = Module["asm"]["sqlite3_malloc"]).apply(null, arguments);
};
var _sqlite3_malloc64 = Module["_sqlite3_malloc64"] = function() {
return (_sqlite3_malloc64 = Module["_sqlite3_malloc64"] = Module["asm"]["sqlite3_malloc64"]).apply(null, arguments);
};
var _sqlite3_free = Module["_sqlite3_free"] = function() {
return (_sqlite3_free = Module["_sqlite3_free"] = Module["asm"]["sqlite3_free"]).apply(null, arguments);
};
var _sqlite3_realloc = Module["_sqlite3_realloc"] = function() {
return (_sqlite3_realloc = Module["_sqlite3_realloc"] = Module["asm"]["sqlite3_realloc"]).apply(null, arguments);
};
var _sqlite3_realloc64 = Module["_sqlite3_realloc64"] = function() {
return (_sqlite3_realloc64 = Module["_sqlite3_realloc64"] = Module["asm"]["sqlite3_realloc64"]).apply(null, arguments);
};
var _sqlite3_randomness = Module["_sqlite3_randomness"] = function() {
return (_sqlite3_randomness = Module["_sqlite3_randomness"] = Module["asm"]["sqlite3_randomness"]).apply(null, arguments);
};
var _sqlite3_serialize = Module["_sqlite3_serialize"] = function() {
return (_sqlite3_serialize = Module["_sqlite3_serialize"] = Module["asm"]["sqlite3_serialize"]).apply(null, arguments);
};
var _sqlite3_prepare_v2 = Module["_sqlite3_prepare_v2"] = function() {
return (_sqlite3_prepare_v2 = Module["_sqlite3_prepare_v2"] = Module["asm"]["sqlite3_prepare_v2"]).apply(null, arguments);
};
var _sqlite3_step = Module["_sqlite3_step"] = function() {
return (_sqlite3_step = Module["_sqlite3_step"] = Module["asm"]["sqlite3_step"]).apply(null, arguments);
};
var _sqlite3_column_int64 = Module["_sqlite3_column_int64"] = function() {
return (_sqlite3_column_int64 = Module["_sqlite3_column_int64"] = Module["asm"]["sqlite3_column_int64"]).apply(null, arguments);
};
var _sqlite3_column_int = Module["_sqlite3_column_int"] = function() {
return (_sqlite3_column_int = Module["_sqlite3_column_int"] = Module["asm"]["sqlite3_column_int"]).apply(null, arguments);
};
var _sqlite3_finalize = Module["_sqlite3_finalize"] = function() {
return (_sqlite3_finalize = Module["_sqlite3_finalize"] = Module["asm"]["sqlite3_finalize"]).apply(null, arguments);
};
var _sqlite3_deserialize = Module["_sqlite3_deserialize"] = function() {
return (_sqlite3_deserialize = Module["_sqlite3_deserialize"] = Module["asm"]["sqlite3_deserialize"]).apply(null, arguments);
};
var _sqlite3_reset = Module["_sqlite3_reset"] = function() {
return (_sqlite3_reset = Module["_sqlite3_reset"] = Module["asm"]["sqlite3_reset"]).apply(null, arguments);
};
var _sqlite3_clear_bindings = Module["_sqlite3_clear_bindings"] = function() {
return (_sqlite3_clear_bindings = Module["_sqlite3_clear_bindings"] = Module["asm"]["sqlite3_clear_bindings"]).apply(null, arguments);
};
var _sqlite3_value_blob = Module["_sqlite3_value_blob"] = function() {
return (_sqlite3_value_blob = Module["_sqlite3_value_blob"] = Module["asm"]["sqlite3_value_blob"]).apply(null, arguments);
};
var _sqlite3_value_text = Module["_sqlite3_value_text"] = function() {
return (_sqlite3_value_text = Module["_sqlite3_value_text"] = Module["asm"]["sqlite3_value_text"]).apply(null, arguments);
};
var _sqlite3_value_bytes = Module["_sqlite3_value_bytes"] = function() {
return (_sqlite3_value_bytes = Module["_sqlite3_value_bytes"] = Module["asm"]["sqlite3_value_bytes"]).apply(null, arguments);
};
var _sqlite3_value_double = Module["_sqlite3_value_double"] = function() {
return (_sqlite3_value_double = Module["_sqlite3_value_double"] = Module["asm"]["sqlite3_value_double"]).apply(null, arguments);
};
var _sqlite3_value_int = Module["_sqlite3_value_int"] = function() {
return (_sqlite3_value_int = Module["_sqlite3_value_int"] = Module["asm"]["sqlite3_value_int"]).apply(null, arguments);
};
var _sqlite3_value_int64 = Module["_sqlite3_value_int64"] = function() {
return (_sqlite3_value_int64 = Module["_sqlite3_value_int64"] = Module["asm"]["sqlite3_value_int64"]).apply(null, arguments);
};
var _sqlite3_value_type = Module["_sqlite3_value_type"] = function() {
return (_sqlite3_value_type = Module["_sqlite3_value_type"] = Module["asm"]["sqlite3_value_type"]).apply(null, arguments);
};
var _sqlite3_result_blob = Module["_sqlite3_result_blob"] = function() {
return (_sqlite3_result_blob = Module["_sqlite3_result_blob"] = Module["asm"]["sqlite3_result_blob"]).apply(null, arguments);
};
var _sqlite3_result_double = Module["_sqlite3_result_double"] = function() {
return (_sqlite3_result_double = Module["_sqlite3_result_double"] = Module["asm"]["sqlite3_result_double"]).apply(null, arguments);
};
var _sqlite3_result_error = Module["_sqlite3_result_error"] = function() {
return (_sqlite3_result_error = Module["_sqlite3_result_error"] = Module["asm"]["sqlite3_result_error"]).apply(null, arguments);
};
var _sqlite3_result_int = Module["_sqlite3_result_int"] = function() {
return (_sqlite3_result_int = Module["_sqlite3_result_int"] = Module["asm"]["sqlite3_result_int"]).apply(null, arguments);
};
var _sqlite3_result_int64 = Module["_sqlite3_result_int64"] = function() {
return (_sqlite3_result_int64 = Module["_sqlite3_result_int64"] = Module["asm"]["sqlite3_result_int64"]).apply(null, arguments);
};
var _sqlite3_result_null = Module["_sqlite3_result_null"] = function() {
return (_sqlite3_result_null = Module["_sqlite3_result_null"] = Module["asm"]["sqlite3_result_null"]).apply(null, arguments);
};
var _sqlite3_result_text = Module["_sqlite3_result_text"] = function() {
return (_sqlite3_result_text = Module["_sqlite3_result_text"] = Module["asm"]["sqlite3_result_text"]).apply(null, arguments);
};
var _sqlite3_result_error_toobig = Module["_sqlite3_result_error_toobig"] = function() {
return (_sqlite3_result_error_toobig = Module["_sqlite3_result_error_toobig"] = Module["asm"]["sqlite3_result_error_toobig"]).apply(null, arguments);
};
var _sqlite3_result_error_code = Module["_sqlite3_result_error_code"] = function() {
return (_sqlite3_result_error_code = Module["_sqlite3_result_error_code"] = Module["asm"]["sqlite3_result_error_code"]).apply(null, arguments);
};
var _sqlite3_result_error_nomem = Module["_sqlite3_result_error_nomem"] = function() {
return (_sqlite3_result_error_nomem = Module["_sqlite3_result_error_nomem"] = Module["asm"]["sqlite3_result_error_nomem"]).apply(null, arguments);
};
var _sqlite3_user_data = Module["_sqlite3_user_data"] = function() {
return (_sqlite3_user_data = Module["_sqlite3_user_data"] = Module["asm"]["sqlite3_user_data"]).apply(null, arguments);
};
var _sqlite3_aggregate_context = Module["_sqlite3_aggregate_context"] = function() {
return (_sqlite3_aggregate_context = Module["_sqlite3_aggregate_context"] = Module["asm"]["sqlite3_aggregate_context"]).apply(null, arguments);
};
var _sqlite3_column_count = Module["_sqlite3_column_count"] = function() {
return (_sqlite3_column_count = Module["_sqlite3_column_count"] = Module["asm"]["sqlite3_column_count"]).apply(null, arguments);
};
var _sqlite3_data_count = Module["_sqlite3_data_count"] = function() {
return (_sqlite3_data_count = Module["_sqlite3_data_count"] = Module["asm"]["sqlite3_data_count"]).apply(null, arguments);
};
var _sqlite3_column_blob = Module["_sqlite3_column_blob"] = function() {
return (_sqlite3_column_blob = Module["_sqlite3_column_blob"] = Module["asm"]["sqlite3_column_blob"]).apply(null, arguments);
};
var _sqlite3_column_bytes = Module["_sqlite3_column_bytes"] = function() {
return (_sqlite3_column_bytes = Module["_sqlite3_column_bytes"] = Module["asm"]["sqlite3_column_bytes"]).apply(null, arguments);
};
var _sqlite3_column_double = Module["_sqlite3_column_double"] = function() {
return (_sqlite3_column_double = Module["_sqlite3_column_double"] = Module["asm"]["sqlite3_column_double"]).apply(null, arguments);
};
var _sqlite3_column_text = Module["_sqlite3_column_text"] = function() {
return (_sqlite3_column_text = Module["_sqlite3_column_text"] = Module["asm"]["sqlite3_column_text"]).apply(null, arguments);
};
var _sqlite3_column_type = Module["_sqlite3_column_type"] = function() {
return (_sqlite3_column_type = Module["_sqlite3_column_type"] = Module["asm"]["sqlite3_column_type"]).apply(null, arguments);
};
var _sqlite3_column_name = Module["_sqlite3_column_name"] = function() {
return (_sqlite3_column_name = Module["_sqlite3_column_name"] = Module["asm"]["sqlite3_column_name"]).apply(null, arguments);
};
var _sqlite3_bind_blob = Module["_sqlite3_bind_blob"] = function() {
return (_sqlite3_bind_blob = Module["_sqlite3_bind_blob"] = Module["asm"]["sqlite3_bind_blob"]).apply(null, arguments);
};
var _sqlite3_bind_double = Module["_sqlite3_bind_double"] = function() {
return (_sqlite3_bind_double = Module["_sqlite3_bind_double"] = Module["asm"]["sqlite3_bind_double"]).apply(null, arguments);
};
var _sqlite3_bind_int = Module["_sqlite3_bind_int"] = function() {
return (_sqlite3_bind_int = Module["_sqlite3_bind_int"] = Module["asm"]["sqlite3_bind_int"]).apply(null, arguments);
};
var _sqlite3_bind_int64 = Module["_sqlite3_bind_int64"] = function() {
return (_sqlite3_bind_int64 = Module["_sqlite3_bind_int64"] = Module["asm"]["sqlite3_bind_int64"]).apply(null, arguments);
};
var _sqlite3_bind_null = Module["_sqlite3_bind_null"] = function() {
return (_sqlite3_bind_null = Module["_sqlite3_bind_null"] = Module["asm"]["sqlite3_bind_null"]).apply(null, arguments);
};
var _sqlite3_bind_text = Module["_sqlite3_bind_text"] = function() {
return (_sqlite3_bind_text = Module["_sqlite3_bind_text"] = Module["asm"]["sqlite3_bind_text"]).apply(null, arguments);
};
var _sqlite3_bind_parameter_count = Module["_sqlite3_bind_parameter_count"] = function() {
return (_sqlite3_bind_parameter_count = Module["_sqlite3_bind_parameter_count"] = Module["asm"]["sqlite3_bind_parameter_count"]).apply(null, arguments);
};
var _sqlite3_bind_parameter_index = Module["_sqlite3_bind_parameter_index"] = function() {
return (_sqlite3_bind_parameter_index = Module["_sqlite3_bind_parameter_index"] = Module["asm"]["sqlite3_bind_parameter_index"]).apply(null, arguments);
};
var _sqlite3_db_handle = Module["_sqlite3_db_handle"] = function() {
return (_sqlite3_db_handle = Module["_sqlite3_db_handle"] = Module["asm"]["sqlite3_db_handle"]).apply(null, arguments);
};
var _sqlite3_sql = Module["_sqlite3_sql"] = function() {
return (_sqlite3_sql = Module["_sqlite3_sql"] = Module["asm"]["sqlite3_sql"]).apply(null, arguments);
};
var _sqlite3_expanded_sql = Module["_sqlite3_expanded_sql"] = function() {
return (_sqlite3_expanded_sql = Module["_sqlite3_expanded_sql"] = Module["asm"]["sqlite3_expanded_sql"]).apply(null, arguments);
};
var _sqlite3_strglob = Module["_sqlite3_strglob"] = function() {
return (_sqlite3_strglob = Module["_sqlite3_strglob"] = Module["asm"]["sqlite3_strglob"]).apply(null, arguments);
};
var _sqlite3_strlike = Module["_sqlite3_strlike"] = function() {
return (_sqlite3_strlike = Module["_sqlite3_strlike"] = Module["asm"]["sqlite3_strlike"]).apply(null, arguments);
};
var _sqlite3_exec = Module["_sqlite3_exec"] = function() {
return (_sqlite3_exec = Module["_sqlite3_exec"] = Module["asm"]["sqlite3_exec"]).apply(null, arguments);
};
var _sqlite3_errmsg = Module["_sqlite3_errmsg"] = function() {
return (_sqlite3_errmsg = Module["_sqlite3_errmsg"] = Module["asm"]["sqlite3_errmsg"]).apply(null, arguments);
};
var _sqlite3_prepare_v3 = Module["_sqlite3_prepare_v3"] = function() {
return (_sqlite3_prepare_v3 = Module["_sqlite3_prepare_v3"] = Module["asm"]["sqlite3_prepare_v3"]).apply(null, arguments);
};
var _sqlite3_libversion = Module["_sqlite3_libversion"] = function() {
return (_sqlite3_libversion = Module["_sqlite3_libversion"] = Module["asm"]["sqlite3_libversion"]).apply(null, arguments);
};
var _sqlite3_libversion_number = Module["_sqlite3_libversion_number"] = function() {
return (_sqlite3_libversion_number = Module["_sqlite3_libversion_number"] = Module["asm"]["sqlite3_libversion_number"]).apply(null, arguments);
};
var _sqlite3_shutdown = Module["_sqlite3_shutdown"] = function() {
return (_sqlite3_shutdown = Module["_sqlite3_shutdown"] = Module["asm"]["sqlite3_shutdown"]).apply(null, arguments);
};
var _sqlite3_changes64 = Module["_sqlite3_changes64"] = function() {
return (_sqlite3_changes64 = Module["_sqlite3_changes64"] = Module["asm"]["sqlite3_changes64"]).apply(null, arguments);
};
var _sqlite3_changes = Module["_sqlite3_changes"] = function() {
return (_sqlite3_changes = Module["_sqlite3_changes"] = Module["asm"]["sqlite3_changes"]).apply(null, arguments);
};
var _sqlite3_total_changes64 = Module["_sqlite3_total_changes64"] = function() {
return (_sqlite3_total_changes64 = Module["_sqlite3_total_changes64"] = Module["asm"]["sqlite3_total_changes64"]).apply(null, arguments);
};
var _sqlite3_total_changes = Module["_sqlite3_total_changes"] = function() {
return (_sqlite3_total_changes = Module["_sqlite3_total_changes"] = Module["asm"]["sqlite3_total_changes"]).apply(null, arguments);
};
var _sqlite3_close_v2 = Module["_sqlite3_close_v2"] = function() {
return (_sqlite3_close_v2 = Module["_sqlite3_close_v2"] = Module["asm"]["sqlite3_close_v2"]).apply(null, arguments);
};
var _sqlite3_interrupt = Module["_sqlite3_interrupt"] = function() {
return (_sqlite3_interrupt = Module["_sqlite3_interrupt"] = Module["asm"]["sqlite3_interrupt"]).apply(null, arguments);
};
var _sqlite3_create_function = Module["_sqlite3_create_function"] = function() {
return (_sqlite3_create_function = Module["_sqlite3_create_function"] = Module["asm"]["sqlite3_create_function"]).apply(null, arguments);
};
var _sqlite3_create_function_v2 = Module["_sqlite3_create_function_v2"] = function() {
return (_sqlite3_create_function_v2 = Module["_sqlite3_create_function_v2"] = Module["asm"]["sqlite3_create_function_v2"]).apply(null, arguments);
};
var _sqlite3_create_window_function = Module["_sqlite3_create_window_function"] = function() {
return (_sqlite3_create_window_function = Module["_sqlite3_create_window_function"] = Module["asm"]["sqlite3_create_window_function"]).apply(null, arguments);
};
var _sqlite3_trace_v2 = Module["_sqlite3_trace_v2"] = function() {
return (_sqlite3_trace_v2 = Module["_sqlite3_trace_v2"] = Module["asm"]["sqlite3_trace_v2"]).apply(null, arguments);
};
var _sqlite3_error_offset = Module["_sqlite3_error_offset"] = function() {
return (_sqlite3_error_offset = Module["_sqlite3_error_offset"] = Module["asm"]["sqlite3_error_offset"]).apply(null, arguments);
};
var _sqlite3_extended_errcode = Module["_sqlite3_extended_errcode"] = function() {
return (_sqlite3_extended_errcode = Module["_sqlite3_extended_errcode"] = Module["asm"]["sqlite3_extended_errcode"]).apply(null, arguments);
};
var _sqlite3_errstr = Module["_sqlite3_errstr"] = function() {
return (_sqlite3_errstr = Module["_sqlite3_errstr"] = Module["asm"]["sqlite3_errstr"]).apply(null, arguments);
};
var _sqlite3_open = Module["_sqlite3_open"] = function() {
return (_sqlite3_open = Module["_sqlite3_open"] = Module["asm"]["sqlite3_open"]).apply(null, arguments);
};
var _sqlite3_open_v2 = Module["_sqlite3_open_v2"] = function() {
return (_sqlite3_open_v2 = Module["_sqlite3_open_v2"] = Module["asm"]["sqlite3_open_v2"]).apply(null, arguments);
};
var _sqlite3_extended_result_codes = Module["_sqlite3_extended_result_codes"] = function() {
return (_sqlite3_extended_result_codes = Module["_sqlite3_extended_result_codes"] = Module["asm"]["sqlite3_extended_result_codes"]).apply(null, arguments);
};
var _sqlite3_file_control = Module["_sqlite3_file_control"] = function() {
return (_sqlite3_file_control = Module["_sqlite3_file_control"] = Module["asm"]["sqlite3_file_control"]).apply(null, arguments);
};
var _sqlite3_uri_parameter = Module["_sqlite3_uri_parameter"] = function() {
return (_sqlite3_uri_parameter = Module["_sqlite3_uri_parameter"] = Module["asm"]["sqlite3_uri_parameter"]).apply(null, arguments);
};
var _sqlite3_uri_key = Module["_sqlite3_uri_key"] = function() {
return (_sqlite3_uri_key = Module["_sqlite3_uri_key"] = Module["asm"]["sqlite3_uri_key"]).apply(null, arguments);
};
var _sqlite3_uri_boolean = Module["_sqlite3_uri_boolean"] = function() {
return (_sqlite3_uri_boolean = Module["_sqlite3_uri_boolean"] = Module["asm"]["sqlite3_uri_boolean"]).apply(null, arguments);
};
var _sqlite3_uri_int64 = Module["_sqlite3_uri_int64"] = function() {
return (_sqlite3_uri_int64 = Module["_sqlite3_uri_int64"] = Module["asm"]["sqlite3_uri_int64"]).apply(null, arguments);
};
var _sqlite3_db_name = Module["_sqlite3_db_name"] = function() {
return (_sqlite3_db_name = Module["_sqlite3_db_name"] = Module["asm"]["sqlite3_db_name"]).apply(null, arguments);
};
var _sqlite3_db_filename = Module["_sqlite3_db_filename"] = function() {
return (_sqlite3_db_filename = Module["_sqlite3_db_filename"] = Module["asm"]["sqlite3_db_filename"]).apply(null, arguments);
};
var _sqlite3_compileoption_used = Module["_sqlite3_compileoption_used"] = function() {
return (_sqlite3_compileoption_used = Module["_sqlite3_compileoption_used"] = Module["asm"]["sqlite3_compileoption_used"]).apply(null, arguments);
};
var _sqlite3_compileoption_get = Module["_sqlite3_compileoption_get"] = function() {
return (_sqlite3_compileoption_get = Module["_sqlite3_compileoption_get"] = Module["asm"]["sqlite3_compileoption_get"]).apply(null, arguments);
};
var _sqlite3_sourceid = Module["_sqlite3_sourceid"] = function() {
return (_sqlite3_sourceid = Module["_sqlite3_sourceid"] = Module["asm"]["sqlite3_sourceid"]).apply(null, arguments);
};
var _sqlite3_wasm_pstack_ptr = Module["_sqlite3_wasm_pstack_ptr"] = function() {
return (_sqlite3_wasm_pstack_ptr = Module["_sqlite3_wasm_pstack_ptr"] = Module["asm"]["sqlite3_wasm_pstack_ptr"]).apply(null, arguments);
};
var _sqlite3_wasm_pstack_restore = Module["_sqlite3_wasm_pstack_restore"] = function() {
return (_sqlite3_wasm_pstack_restore = Module["_sqlite3_wasm_pstack_restore"] = Module["asm"]["sqlite3_wasm_pstack_restore"]).apply(null, arguments);
};
var _sqlite3_wasm_pstack_alloc = Module["_sqlite3_wasm_pstack_alloc"] = function() {
return (_sqlite3_wasm_pstack_alloc = Module["_sqlite3_wasm_pstack_alloc"] = Module["asm"]["sqlite3_wasm_pstack_alloc"]).apply(null, arguments);
};
var _sqlite3_wasm_pstack_remaining = Module["_sqlite3_wasm_pstack_remaining"] = function() {
return (_sqlite3_wasm_pstack_remaining = Module["_sqlite3_wasm_pstack_remaining"] = Module["asm"]["sqlite3_wasm_pstack_remaining"]).apply(null, arguments);
};
var _sqlite3_wasm_pstack_quota = Module["_sqlite3_wasm_pstack_quota"] = function() {
return (_sqlite3_wasm_pstack_quota = Module["_sqlite3_wasm_pstack_quota"] = Module["asm"]["sqlite3_wasm_pstack_quota"]).apply(null, arguments);
};
var _sqlite3_wasm_db_error = Module["_sqlite3_wasm_db_error"] = function() {
return (_sqlite3_wasm_db_error = Module["_sqlite3_wasm_db_error"] = Module["asm"]["sqlite3_wasm_db_error"]).apply(null, arguments);
};
var _sqlite3_wasm_test_struct = Module["_sqlite3_wasm_test_struct"] = function() {
return (_sqlite3_wasm_test_struct = Module["_sqlite3_wasm_test_struct"] = Module["asm"]["sqlite3_wasm_test_struct"]).apply(null, arguments);
};
var _sqlite3_wasm_enum_json = Module["_sqlite3_wasm_enum_json"] = function() {
return (_sqlite3_wasm_enum_json = Module["_sqlite3_wasm_enum_json"] = Module["asm"]["sqlite3_wasm_enum_json"]).apply(null, arguments);
};
var _sqlite3_wasm_vfs_unlink = Module["_sqlite3_wasm_vfs_unlink"] = function() {
return (_sqlite3_wasm_vfs_unlink = Module["_sqlite3_wasm_vfs_unlink"] = Module["asm"]["sqlite3_wasm_vfs_unlink"]).apply(null, arguments);
};
var _sqlite3_wasm_db_vfs = Module["_sqlite3_wasm_db_vfs"] = function() {
return (_sqlite3_wasm_db_vfs = Module["_sqlite3_wasm_db_vfs"] = Module["asm"]["sqlite3_wasm_db_vfs"]).apply(null, arguments);
};
var _sqlite3_wasm_db_reset = Module["_sqlite3_wasm_db_reset"] = function() {
return (_sqlite3_wasm_db_reset = Module["_sqlite3_wasm_db_reset"] = Module["asm"]["sqlite3_wasm_db_reset"]).apply(null, arguments);
};
var _sqlite3_wasm_db_export_chunked = Module["_sqlite3_wasm_db_export_chunked"] = function() {
return (_sqlite3_wasm_db_export_chunked = Module["_sqlite3_wasm_db_export_chunked"] = Module["asm"]["sqlite3_wasm_db_export_chunked"]).apply(null, arguments);
};
var _sqlite3_wasm_db_serialize = Module["_sqlite3_wasm_db_serialize"] = function() {
return (_sqlite3_wasm_db_serialize = Module["_sqlite3_wasm_db_serialize"] = Module["asm"]["sqlite3_wasm_db_serialize"]).apply(null, arguments);
};
var _sqlite3_wasm_kvvfsMakeKeyOnPstack = Module["_sqlite3_wasm_kvvfsMakeKeyOnPstack"] = function() {
return (_sqlite3_wasm_kvvfsMakeKeyOnPstack = Module["_sqlite3_wasm_kvvfsMakeKeyOnPstack"] = Module["asm"]["sqlite3_wasm_kvvfsMakeKeyOnPstack"]).apply(null, arguments);
};
var _sqlite3_wasm_kvvfs_methods = Module["_sqlite3_wasm_kvvfs_methods"] = function() {
return (_sqlite3_wasm_kvvfs_methods = Module["_sqlite3_wasm_kvvfs_methods"] = Module["asm"]["sqlite3_wasm_kvvfs_methods"]).apply(null, arguments);
};
var _sqlite3_wasm_init_wasmfs = Module["_sqlite3_wasm_init_wasmfs"] = function() {
return (_sqlite3_wasm_init_wasmfs = Module["_sqlite3_wasm_init_wasmfs"] = Module["asm"]["sqlite3_wasm_init_wasmfs"]).apply(null, arguments);
};
var _sqlite3_wasm_test_intptr = Module["_sqlite3_wasm_test_intptr"] = function() {
return (_sqlite3_wasm_test_intptr = Module["_sqlite3_wasm_test_intptr"] = Module["asm"]["sqlite3_wasm_test_intptr"]).apply(null, arguments);
};
var _sqlite3_wasm_test_int64_max = Module["_sqlite3_wasm_test_int64_max"] = function() {
return (_sqlite3_wasm_test_int64_max = Module["_sqlite3_wasm_test_int64_max"] = Module["asm"]["sqlite3_wasm_test_int64_max"]).apply(null, arguments);
};
var _sqlite3_wasm_test_int64_min = Module["_sqlite3_wasm_test_int64_min"] = function() {
return (_sqlite3_wasm_test_int64_min = Module["_sqlite3_wasm_test_int64_min"] = Module["asm"]["sqlite3_wasm_test_int64_min"]).apply(null, arguments);
};
var _sqlite3_wasm_test_int64_times2 = Module["_sqlite3_wasm_test_int64_times2"] = function() {
return (_sqlite3_wasm_test_int64_times2 = Module["_sqlite3_wasm_test_int64_times2"] = Module["asm"]["sqlite3_wasm_test_int64_times2"]).apply(null, arguments);
};
var _sqlite3_wasm_test_int64_minmax = Module["_sqlite3_wasm_test_int64_minmax"] = function() {
return (_sqlite3_wasm_test_int64_minmax = Module["_sqlite3_wasm_test_int64_minmax"] = Module["asm"]["sqlite3_wasm_test_int64_minmax"]).apply(null, arguments);
};
var _sqlite3_wasm_test_int64ptr = Module["_sqlite3_wasm_test_int64ptr"] = function() {
return (_sqlite3_wasm_test_int64ptr = Module["_sqlite3_wasm_test_int64ptr"] = Module["asm"]["sqlite3_wasm_test_int64ptr"]).apply(null, arguments);
};
var _sqlite3_wasm_test_stack_overflow = Module["_sqlite3_wasm_test_stack_overflow"] = function() {
return (_sqlite3_wasm_test_stack_overflow = Module["_sqlite3_wasm_test_stack_overflow"] = Module["asm"]["sqlite3_wasm_test_stack_overflow"]).apply(null, arguments);
};
var _sqlite3_wasm_test_str_hello = Module["_sqlite3_wasm_test_str_hello"] = function() {
return (_sqlite3_wasm_test_str_hello = Module["_sqlite3_wasm_test_str_hello"] = Module["asm"]["sqlite3_wasm_test_str_hello"]).apply(null, arguments);
};
var _malloc = Module["_malloc"] = function() {
return (_malloc = Module["_malloc"] = Module["asm"]["malloc"]).apply(null, arguments);
};
var ___errno_location = Module["___errno_location"] = function() {
return (___errno_location = Module["___errno_location"] = Module["asm"]["__errno_location"]).apply(null, arguments);
};
var _free = Module["_free"] = function() {
return (_free = Module["_free"] = Module["asm"]["free"]).apply(null, arguments);
};
var stackSave = Module["stackSave"] = function() {
return (stackSave = Module["stackSave"] = Module["asm"]["stackSave"]).apply(null, arguments);
};
var stackRestore = Module["stackRestore"] = function() {
return (stackRestore = Module["stackRestore"] = Module["asm"]["stackRestore"]).apply(null, arguments);
};
var stackAlloc = Module["stackAlloc"] = function() {
return (stackAlloc = Module["stackAlloc"] = Module["asm"]["stackAlloc"]).apply(null, arguments);
};
Module["wasmMemory"] = wasmMemory;
Module["FS"] = FS;
var calledRun;
dependenciesFulfilled = function runCaller() {
if (!calledRun) run();
if (!calledRun) dependenciesFulfilled = runCaller;
};
function run(args) {
args = args || arguments_;
if (runDependencies > 0) {
return;
}
preRun();
if (runDependencies > 0) {
return;
}
function doRun() {
if (calledRun) return;
calledRun = true;
Module['calledRun'] = true;
if (ABORT) return;
initRuntime();
|
︙ | | | ︙ | |
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|
run();
/* BEGIN FILE: api/post-js-header.js */
/**
post-js-header.js is to be prepended to other code to create
post-js.js for use with Emscripten's --post-js flag. This code
requires that it be running in that context. The Emscripten
environment must have been set up already but it will not have
loaded its WASM when the code in this file is run. The function it
installs will be run after the WASM module is loaded, at which
point the sqlite3 WASM API bits will be set up.
*/
if(!Module.postRun) Module.postRun = [];
Module.postRun.push(function(Module/*the Emscripten-style module object*/){
'use strict';
/* This function will contain at least the following:
- post-js-header.js (this file)
- sqlite3-api-prologue.js => Bootstrapping bits to attach the rest to
- common/whwasmutil.js => Replacements for much of Emscripten's glue
- jaccwaby/jaccwabyt.js => Jaccwabyt (C/JS struct binding)
- sqlite3-api-glue.js => glues previous parts together
- sqlite3-api-oo.js => SQLite3 OO API #1
- sqlite3-api-worker1.js => Worker-based API
- sqlite3-api-opfs.js => OPFS VFS
- sqlite3-api-cleanup.js => final API cleanup
- post-js-footer.js => closes this postRun() function
*/
/* END FILE: api/post-js-header.js */
/* BEGIN FILE: ./bld/sqlite3-api.js */
/* BEGIN FILE: ./bld/sqlite3-license-version.js */
/*
** LICENSE for the sqlite3 WebAssembly/JavaScript APIs.
**
** This bundle (typically released as sqlite3.js or sqlite3-wasmfs.js)
** is an amalgamation of JavaScript source code from two projects:
**
** 1) https://emscripten.org: the Emscripten "glue code" is covered by
** the terms of the MIT license and University of Illinois/NCSA
** Open Source License, as described at:
**
** https://emscripten.org/docs/introducing_emscripten/emscripten_license.html
**
** 2) https://sqlite.org: all code and documentation labeled as being
** from this source are released under the same terms as the sqlite3
** C library:
**
** 2022-10-16
**
** The author disclaims copyright to this source code. In place of a
** legal notice, here is a blessing:
**
** * May you do good and not evil.
** * May you find forgiveness for yourself and forgive others.
** * May you share freely, never taking more than you give.
*/
/*
** This code was built from sqlite3 version...
**
** SQLITE_VERSION "3.40.0"
** SQLITE_VERSION_NUMBER 3040000
** SQLITE_SOURCE_ID "2022-10-27 14:28:15 a4d40f6346e7eb2a5239684dba86f297358122768a4d4bf6786b6028f430alt1"
*/
/* END FILE: ./bld/sqlite3-license-version.js */
/* BEGIN FILE: api/sqlite3-api-prologue.js */
/*
2022-05-22
The author disclaims copyright to this source code. In place of a
legal notice, here is a blessing:
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
***********************************************************************
This file is intended to be combined at build-time with other
related code, most notably a header and footer which wraps this whole
file into an Emscripten Module.postRun() handler which has a parameter
named "Module" (the Emscripten Module object). The exact requirements,
conventions, and build process are very much under construction and
will be (re)documented once they've stopped fluctuating so much.
Specific goals of this project:
- Except where noted in the non-goals, provide a more-or-less
feature-complete wrapper to the sqlite3 C API, insofar as WASM
feature parity with C allows for. In fact, provide at least 3
APIs...
1) Bind a low-level sqlite3 API which is as close to the native
one as feasible in terms of usage.
2) A higher-level API, more akin to sql.js and node.js-style
implementations. This one speaks directly to the low-level
API. This API must be used from the same thread as the
low-level API.
3) A second higher-level API which speaks to the previous APIs via
worker messages. This one is intended for use in the main
thread, with the lower-level APIs installed in a Worker thread,
and talking to them via Worker messages. Because Workers are
asynchronouns and have only a single message channel, some
acrobatics are needed here to feed async work results back to
the client (as we cannot simply pass around callbacks between
the main and Worker threads).
- Insofar as possible, support client-side storage using JS
filesystem APIs. As of this writing, such things are still very
much under development.
Specific non-goals of this project:
- As WASM is a web-centric technology and UTF-8 is the King of
Encodings in that realm, there are no currently plans to support
the UTF16-related sqlite3 APIs. They would add a complication to
the bindings for no appreciable benefit. Though web-related
implementation details take priority, and the JavaScript
components of the API specifically focus on browser clients, the
lower-level WASM module "should" work in non-web WASM
environments.
- Supporting old or niche-market platforms. WASM is built for a
modern web and requires modern platforms.
- Though scalar User-Defined Functions (UDFs) may be created in
JavaScript, there are currently no plans to add support for
aggregate and window functions.
Attribution:
This project is endebted to the work of sql.js:
https://github.com/sql-js/sql.js
sql.js was an essential stepping stone in this code's development as
it demonstrated how to handle some of the WASM-related voodoo (like
handling pointers-to-pointers and adding JS implementations of
C-bound callback functions). These APIs have a considerably
different shape than sql.js's, however.
*/
/**
sqlite3ApiBootstrap() is the only global symbol persistently
exposed by this API. It is intended to be called one time at the
end of the API amalgamation process, passed configuration details
for the current environment, and then optionally be removed from
the global object using `delete self.sqlite3ApiBootstrap`.
This function expects a configuration object, intended to abstract
away details specific to any given WASM environment, primarily so
that it can be used without any _direct_ dependency on
Emscripten. (Note the default values for the config object!) The
config object is only honored the first time this is
called. Subsequent calls ignore the argument and return the same
(configured) object which gets initialized by the first call.
The config object properties include:
- `exports`[^1]: the "exports" object for the current WASM
environment. In an Emscripten build, this should be set to
`Module['asm']`.
- `memory`[^1]: optional WebAssembly.Memory object, defaulting to
`exports.memory`. In Emscripten environments this should be set
to `Module.wasmMemory` if the build uses `-sIMPORT_MEMORY`, or be
left undefined/falsy to default to `exports.memory` when using
WASM-exported memory.
- `bigIntEnabled`: true if BigInt support is enabled. Defaults to
true if self.BigInt64Array is available, else false. Some APIs
will throw exceptions if called without BigInt support, as BigInt
is required for marshalling C-side int64 into and out of JS.
- `allocExportName`: the name of the function, in `exports`, of the
`malloc(3)`-compatible routine for the WASM environment. Defaults
to `"malloc"`.
- `deallocExportName`: the name of the function, in `exports`, of
the `free(3)`-compatible routine for the WASM
environment. Defaults to `"free"`.
- `wasmfsOpfsDir`[^1]: if the environment supports persistent storage, this
directory names the "mount point" for that directory. It must be prefixed
by `/` and may currently contain only a single directory-name part. Using
the root directory name is not supported by any current persistent backend.
[^1] = This property may optionally be a function, in which case this
function re-assigns it to the value returned from that function,
enabling delayed evaluation.
*/
'use strict';
self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
apiConfig = (self.sqlite3ApiConfig || sqlite3ApiBootstrap.defaultConfig)
){
if(sqlite3ApiBootstrap.sqlite3){ /* already initalized */
console.warn("sqlite3ApiBootstrap() called multiple times.",
"Config and external initializers are ignored on calls after the first.");
return sqlite3ApiBootstrap.sqlite3;
}
const config = Object.assign(Object.create(null),{
exports: undefined,
memory: undefined,
bigIntEnabled: (()=>{
if('undefined'!==typeof Module){
/* Emscripten module will contain HEAPU64 when built with
-sWASM_BIGINT=1, else it will not. */
return !!Module.HEAPU64;
}
return !!self.BigInt64Array;
})(),
allocExportName: 'malloc',
deallocExportName: 'free',
wasmfsOpfsDir: '/opfs'
}, apiConfig || {});
[
// If any of these config options are functions, replace them with
// the result of calling that function...
'exports', 'memory', 'wasmfsOpfsDir'
].forEach((k)=>{
if('function' === typeof config[k]){
config[k] = config[k]();
}
});
/** Throws a new Error, the message of which is the concatenation
all args with a space between each. */
const toss = (...args)=>{throw new Error(args.join(' '))};
if(config.wasmfsOpfsDir && !/^\/[^/]+$/.test(config.wasmfsOpfsDir)){
toss("config.wasmfsOpfsDir must be falsy or in the form '/dir-name'.");
}
/**
Returns true if n is a 32-bit (signed) integer, else
false. This is used for determining when we need to switch to
double-type DB operations for integer values in order to keep
more precision.
*/
const isInt32 = (n)=>{
return ('bigint'!==typeof n /*TypeError: can't convert BigInt to number*/)
&& !!(n===(n|0) && n<=2147483647 && n>=-2147483648);
};
/**
Returns true if the given BigInt value is small enough to fit
into an int64 value, else false.
*/
const bigIntFits64 = function f(b){
if(!f._max){
f._max = BigInt("0x7fffffffffffffff");
f._min = ~f._max;
}
return b >= f._min && b <= f._max;
};
/**
Returns true if the given BigInt value is small enough to fit
into an int32, else false.
*/
const bigIntFits32 = (b)=>(b >= (-0x7fffffffn - 1n) && b <= 0x7fffffffn);
/**
Returns true if the given BigInt value is small enough to fit
into a double value without loss of precision, else false.
*/
const bigIntFitsDouble = function f(b){
if(!f._min){
f._min = Number.MIN_SAFE_INTEGER;
f._max = Number.MAX_SAFE_INTEGER;
}
return b >= f._min && b <= f._max;
};
/** Returns v if v appears to be a TypedArray, else false. */
const isTypedArray = (v)=>{
return (v && v.constructor && isInt32(v.constructor.BYTES_PER_ELEMENT)) ? v : false;
};
/** Internal helper to use in operations which need to distinguish
between TypedArrays which are backed by a SharedArrayBuffer
from those which are not. */
const __SAB = ('undefined'===typeof SharedArrayBuffer)
? function(){} : SharedArrayBuffer;
/** Returns true if the given TypedArray object is backed by a
SharedArrayBuffer, else false. */
const isSharedTypedArray = (aTypedArray)=>(aTypedArray.buffer instanceof __SAB);
/**
Returns either aTypedArray.slice(begin,end) (if
aTypedArray.buffer is a SharedArrayBuffer) or
aTypedArray.subarray(begin,end) (if it's not).
This distinction is important for APIs which don't like to
work on SABs, e.g. TextDecoder, and possibly for our
own APIs which work on memory ranges which "might" be
modified by other threads while they're working.
*/
const typedArrayPart = (aTypedArray, begin, end)=>{
return isSharedTypedArray(aTypedArray)
? aTypedArray.slice(begin, end)
: aTypedArray.subarray(begin, end);
};
/**
Returns true if v appears to be one of our bind()-able
TypedArray types: Uint8Array or Int8Array. Support for
TypedArrays with element sizes >1 is TODO.
*/
const isBindableTypedArray = (v)=>{
return v && v.constructor && (1===v.constructor.BYTES_PER_ELEMENT);
};
/**
Returns true if v appears to be one of the TypedArray types
which is legal for holding SQL code (as opposed to binary blobs).
Currently this is the same as isBindableTypedArray() but it
seems likely that we'll eventually want to add Uint32Array
and friends to the isBindableTypedArray() list but not to the
isSQLableTypedArray() list.
*/
const isSQLableTypedArray = (v)=>{
return v && v.constructor && (1===v.constructor.BYTES_PER_ELEMENT);
};
/** Returns true if isBindableTypedArray(v) does, else throws with a message
that v is not a supported TypedArray value. */
const affirmBindableTypedArray = (v)=>{
return isBindableTypedArray(v)
|| toss("Value is not of a supported TypedArray type.");
};
const utf8Decoder = new TextDecoder('utf-8');
/**
Uses TextDecoder to decode the given half-open range of the
given TypedArray to a string. This differs from a simple
call to TextDecoder in that it accounts for whether the
first argument is backed by a SharedArrayBuffer or not,
and can work more efficiently if it's not (TextDecoder
refuses to act upon an SAB).
*/
const typedArrayToString = function(typedArray, begin, end){
return utf8Decoder.decode(typedArrayPart(typedArray, begin,end));
};
/**
If v is-a Array, its join('') result is returned. If
isSQLableTypedArray(v) is true then typedArrayToString(v) is
returned. Else v is returned as-is.
*/
const flexibleString = function(v){
if(isSQLableTypedArray(v)) return typedArrayToString(v);
else if(Array.isArray(v)) return v.join('');
return v;
};
/**
An Error subclass specifically for reporting Wasm-level malloc()
failure and enabling clients to unambiguously identify such
exceptions.
*/
class WasmAllocError extends Error {
constructor(...args){
super(...args);
this.name = 'WasmAllocError';
}
};
/**
Functionally equivalent to the WasmAllocError constructor but may
be used as part of an expression, e.g.:
```
return someAllocatingFunction(x) || WasmAllocError.toss(...);
```
*/
WasmAllocError.toss = (...args)=>{
throw new WasmAllocError(...args);
};
/**
The main sqlite3 binding API gets installed into this object,
mimicking the C API as closely as we can. The numerous members
names with prefixes 'sqlite3_' and 'SQLITE_' behave, insofar as
possible, identically to the C-native counterparts, as documented at:
https://www.sqlite.org/c3ref/intro.html
A very few exceptions require an additional level of proxy
function or may otherwise require special attention in the WASM
environment, and all such cases are document here. Those not
documented here are installed as 1-to-1 proxies for their C-side
counterparts.
*/
const capi = {
/**
sqlite3_create_function_v2() differs from its native
counterpart only in the following ways:
1) The fourth argument (`eTextRep`) argument must not specify
any encoding other than sqlite3.SQLITE_UTF8. The JS API does not
currently support any other encoding and likely never
will. This function does not replace that argument on its own
because it may contain other flags.
2) Any of the four final arguments may be either WASM pointers
(assumed to be function pointers) or JS Functions. In the
latter case, each gets bound to WASM using
sqlite3.capi.wasm.installFunction() and that wrapper is passed
on to the native implementation.
The semantics of JS functions are:
xFunc: is passed `(pCtx, ...values)`. Its return value becomes
the new SQL function's result.
xStep: is passed `(pCtx, ...values)`. Its return value is
ignored.
xFinal: is passed `(pCtx)`. Its return value becomes the new
aggregate SQL function's result.
xDestroy: is passed `(void*)`. Its return value is ignored. The
pointer passed to it is the one from the 5th argument to
sqlite3_create_function_v2().
Note that:
- `pCtx` in the above descriptions is a `sqlite3_context*`. At
least 99 times out of a hundred, that initial argument will
be irrelevant for JS UDF bindings, but it needs to be there
so that the cases where it _is_ relevant, in particular with
window and aggregate functions, have full access to the
lower-level sqlite3 APIs.
- When wrapping JS functions, the remaining arguments are passd
to them as positional arguments, not as an array of
arguments, because that allows callback definitions to be
more JS-idiomatic than C-like. For example `(pCtx,a,b)=>a+b`
is more intuitive and legible than
`(pCtx,args)=>args[0]+args[1]`. For cases where an array of
arguments would be more convenient, the callbacks simply need
to be declared like `(pCtx,...args)=>{...}`, in which case
`args` will be an array.
- If a JS wrapper throws, it gets translated to
sqlite3_result_error() or sqlite3_result_error_nomem(),
depending on whether the exception is an
sqlite3.WasmAllocError object or not.
- When passing on WASM function pointers, arguments are _not_
converted or reformulated. They are passed on as-is in raw
pointer form using their native C signatures. Only JS
functions passed in to this routine, and thus wrapped by this
routine, get automatic conversions of arguments and result
values. The routines which perform those conversions are
exposed for client-side use as
sqlite3_create_function_v2.convertUdfArgs() and
sqlite3_create_function_v2.setUdfResult(). sqlite3_create_function()
and sqlite3_create_window_function() have those same methods.
For xFunc(), xStep(), and xFinal():
- When called from SQL, arguments to the UDF, and its result,
will be converted between JS and SQL with as much fidelity as
is feasible, triggering an exception if a type conversion
cannot be determined. Some freedom is afforded to numeric
conversions due to friction between the JS and C worlds:
integers which are larger than 32 bits may be treated as
doubles or BigInts.
If any JS-side bound functions throw, those exceptions are
intercepted and converted to database-side errors with the
exception of xDestroy(): any exception from it is ignored,
possibly generating a console.error() message. Destructors
must not throw.
Once installed, there is currently no way to uninstall the
automatically-converted WASM-bound JS functions from WASM. They
can be uninstalled from the database as documented in the C
API, but this wrapper currently has no infrastructure in place
to also free the WASM-bound JS wrappers, effectively resulting
in a memory leak if the client uninstalls the UDF. Improving that
is a potential TODO, but removing client-installed UDFs is rare
in practice. If this factor is relevant for a given client,
they can create WASM-bound JS functions themselves, hold on to their
pointers, and pass the pointers in to here. Later on, they can
free those pointers (using `wasm.uninstallFunction()` or
equivalent).
C reference: https://www.sqlite.org/c3ref/create_function.html
Maintenance reminder: the ability to add new
WASM-accessible functions to the runtime requires that the
WASM build is compiled with emcc's `-sALLOW_TABLE_GROWTH`
flag.
*/
sqlite3_create_function_v2: function(
pDb, funcName, nArg, eTextRep, pApp,
xFunc, xStep, xFinal, xDestroy
){/*installed later*/},
/**
Equivalent to passing the same arguments to
sqlite3_create_function_v2(), with 0 as the final argument.
*/
sqlite3_create_function:function(
pDb, funcName, nArg, eTextRep, pApp,
xFunc, xStep, xFinal
){/*installed later*/},
/**
The sqlite3_create_window_function() JS wrapper differs from
its native implementation in the exact same way that
sqlite3_create_function_v2() does. The additional function,
xInverse(), is treated identically to xStep() by the wrapping
layer.
*/
sqlite3_create_window_function: function(
pDb, funcName, nArg, eTextRep, pApp,
xStep, xFinal, xValue, xInverse, xDestroy
){/*installed later*/},
/**
The sqlite3_prepare_v3() binding handles two different uses
with differing JS/WASM semantics:
1) sqlite3_prepare_v3(pDb, sqlString, -1, prepFlags, ppStmt , null)
2) sqlite3_prepare_v3(pDb, sqlPointer, sqlByteLen, prepFlags, ppStmt, sqlPointerToPointer)
Note that the SQL length argument (the 3rd argument) must, for
usage (1), always be negative because it must be a byte length
and that value is expensive to calculate from JS (where only
the character length of strings is readily available). It is
retained in this API's interface for code/documentation
compatibility reasons but is currently _always_ ignored. With
usage (2), the 3rd argument is used as-is but is is still
critical that the C-style input string (2nd argument) be
terminated with a 0 byte.
In usage (1), the 2nd argument must be of type string,
Uint8Array, or Int8Array (either of which is assumed to
hold SQL). If it is, this function assumes case (1) and
calls the underyling C function with the equivalent of:
(pDb, sqlAsString, -1, prepFlags, ppStmt, null)
The `pzTail` argument is ignored in this case because its
result is meaningless when a string-type value is passed
through: the string goes through another level of internal
conversion for WASM's sake and the result pointer would refer
to that transient conversion's memory, not the passed-in
string.
If the sql argument is not a string, it must be a _pointer_ to
a NUL-terminated string which was allocated in the WASM memory
(e.g. using capi.wasm.alloc() or equivalent). In that case,
the final argument may be 0/null/undefined or must be a pointer
to which the "tail" of the compiled SQL is written, as
documented for the C-side sqlite3_prepare_v3(). In case (2),
the underlying C function is called with the equivalent of:
(pDb, sqlAsPointer, sqlByteLen, prepFlags, ppStmt, pzTail)
It returns its result and compiled statement as documented in
the C API. Fetching the output pointers (5th and 6th
parameters) requires using `capi.wasm.getMemValue()` (or
equivalent) and the `pzTail` will point to an address relative to
the `sqlAsPointer` value.
If passed an invalid 2nd argument type, this function will
return SQLITE_MISUSE and sqlite3_errmsg() will contain a string
describing the problem.
Side-note: if given an empty string, or one which contains only
comments or an empty SQL expression, 0 is returned but the result
output pointer will be NULL.
*/
sqlite3_prepare_v3: (dbPtr, sql, sqlByteLen, prepFlags,
stmtPtrPtr, strPtrPtr)=>{}/*installed later*/,
/**
Equivalent to calling sqlite3_prapare_v3() with 0 as its 4th argument.
*/
sqlite3_prepare_v2: (dbPtr, sql, sqlByteLen,
stmtPtrPtr,strPtrPtr)=>{}/*installed later*/,
/**
This binding enables the callback argument to be a JavaScript.
If the callback is a function, then for the duration of the
sqlite3_exec() call, it installs a WASM-bound function which
acts as a proxy for the given callback. That proxy will also
perform a conversion of the callback's arguments from
`(char**)` to JS arrays of strings. However, for API
consistency's sake it will still honor the C-level callback
parameter order and will call it like:
`callback(pVoid, colCount, listOfValues, listOfColNames)`
If the callback is not a JS function then this binding performs
no translation of the callback, but the sql argument is still
converted to a WASM string for the call using the
"flexible-string" argument converter.
*/
sqlite3_exec: (pDb, sql, callback, pVoid, pErrMsg)=>{}/*installed later*/,
/**
If passed a single argument which appears to be a byte-oriented
TypedArray (Int8Array or Uint8Array), this function treats that
TypedArray as an output target, fetches `theArray.byteLength`
bytes of randomness, and populates the whole array with it. As
a special case, if the array's length is 0, this function
behaves as if it were passed (0,0). When called this way, it
returns its argument, else it returns the `undefined` value.
If called with any other arguments, they are passed on as-is
to the C API. Results are undefined if passed any incompatible
values.
*/
sqlite3_randomness: (n, outPtr)=>{/*installed later*/},
/**
Various internal-use utilities are added here as needed. They
are bound to an object only so that we have access to them in
the differently-scoped steps of the API bootstrapping
process. At the end of the API setup process, this object gets
removed. These are NOT part of the public API.
*/
util:{
affirmBindableTypedArray, flexibleString,
bigIntFits32, bigIntFits64, bigIntFitsDouble,
isBindableTypedArray,
isInt32, isSQLableTypedArray, isTypedArray,
typedArrayToString,
isUIThread: ()=>'undefined'===typeof WorkerGlobalScope,
isSharedTypedArray,
typedArrayPart
},
/**
Holds state which are specific to the WASM-related
infrastructure and glue code. It is not expected that client
code will normally need these, but they're exposed here in case
it does. These APIs are _not_ to be considered an
official/stable part of the sqlite3 WASM API. They may change
as the developers' experience suggests appropriate changes.
Note that a number of members of this object are injected
dynamically after the api object is fully constructed, so
not all are documented inline here.
*/
wasm: {
//^^^ TODO?: move wasm from sqlite3.capi.wasm to sqlite3.wasm
/**
Emscripten APIs have a deep-seated assumption that all pointers
are 32 bits. We'll remain optimistic that that won't always be
the case and will use this constant in places where we might
otherwise use a hard-coded 4.
*/
ptrSizeof: config.wasmPtrSizeof || 4,
/**
The WASM IR (Intermediate Representation) value for
pointer-type values. It MUST refer to a value type of the
size described by this.ptrSizeof _or_ it may be any value
which ends in '*', which Emscripten's glue code internally
translates to i32.
*/
ptrIR: config.wasmPtrIR || "i32",
/**
True if BigInt support was enabled via (e.g.) the
Emscripten -sWASM_BIGINT flag, else false. When
enabled, certain 64-bit sqlite3 APIs are enabled which
are not otherwise enabled due to JS/WASM int64
impedence mismatches.
*/
bigIntEnabled: !!config.bigIntEnabled,
/**
The symbols exported by the WASM environment.
*/
exports: config.exports
|| toss("Missing API config.exports (WASM module exports)."),
/**
When Emscripten compiles with `-sIMPORT_MEMORY`, it
initalizes the heap and imports it into wasm, as opposed to
the other way around. In this case, the memory is not
available via this.exports.memory.
*/
memory: config.memory || config.exports['memory']
|| toss("API config object requires a WebAssembly.Memory object",
"in either config.exports.memory (exported)",
"or config.memory (imported)."),
/**
The API's one single point of access to the WASM-side memory
allocator. Works like malloc(3) (and is likely bound to
malloc()) but throws an WasmAllocError if allocation fails. It is
important that any code which might pass through the sqlite3 C
API NOT throw and must instead return SQLITE_NOMEM (or
equivalent, depending on the context).
That said, very few cases in the API can result in
client-defined functions propagating exceptions via the C-style
API. Most notably, this applies ot User-defined SQL Functions
(UDFs) registered via sqlite3_create_function_v2(). For that
specific case it is recommended that all UDF creation be
funneled through a utility function and that a wrapper function
be added around the UDF which catches any exception and sets
the error state to OOM. (The overall complexity of registering
UDFs essentially requires a helper for doing so!)
*/
alloc: undefined/*installed later*/,
/**
The API's one single point of access to the WASM-side memory
deallocator. Works like free(3) (and is likely bound to
free()).
*/
dealloc: undefined/*installed later*/
/* Many more wasm-related APIs get installed later on. */
}/*wasm*/
}/*capi*/;
const wasm = capi.wasm, util = capi.util;
/**
wasm.alloc()'s srcTypedArray.byteLength bytes,
populates them with the values from the source
TypedArray, and returns the pointer to that memory. The
returned pointer must eventually be passed to
wasm.dealloc() to clean it up.
As a special case, to avoid further special cases where
this is used, if srcTypedArray.byteLength is 0, it
allocates a single byte and sets it to the value
0. Even in such cases, calls must behave as if the
allocated memory has exactly srcTypedArray.byteLength
bytes.
ACHTUNG: this currently only works for Uint8Array and
Int8Array types and will throw if srcTypedArray is of
any other type.
*/
wasm.allocFromTypedArray = function(srcTypedArray){
affirmBindableTypedArray(srcTypedArray);
const pRet = wasm.alloc(srcTypedArray.byteLength || 1);
wasm.heapForSize(srcTypedArray.constructor).set(srcTypedArray.byteLength ? srcTypedArray : [0], pRet);
return pRet;
};
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run();
if(!Module.postRun) Module.postRun = [];
Module.postRun.push(function(Module){
'use strict';
'use strict';
self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
apiConfig = (self.sqlite3ApiConfig || sqlite3ApiBootstrap.defaultConfig)
){
if(sqlite3ApiBootstrap.sqlite3){
console.warn("sqlite3ApiBootstrap() called multiple times.",
"Config and external initializers are ignored on calls after the first.");
return sqlite3ApiBootstrap.sqlite3;
}
const config = Object.assign(Object.create(null),{
exports: undefined,
memory: undefined,
bigIntEnabled: (()=>{
if('undefined'!==typeof Module){
return !!Module.HEAPU64;
}
return !!self.BigInt64Array;
})(),
allocExportName: 'malloc',
deallocExportName: 'free',
wasmfsOpfsDir: '/opfs'
}, apiConfig || {});
[
'exports', 'memory', 'wasmfsOpfsDir'
].forEach((k)=>{
if('function' === typeof config[k]){
config[k] = config[k]();
}
});
const toss = (...args)=>{throw new Error(args.join(' '))};
if(config.wasmfsOpfsDir && !/^\/[^/]+$/.test(config.wasmfsOpfsDir)){
toss("config.wasmfsOpfsDir must be falsy or in the form '/dir-name'.");
}
const isInt32 = (n)=>{
return ('bigint'!==typeof n )
&& !!(n===(n|0) && n<=2147483647 && n>=-2147483648);
};
const bigIntFits64 = function f(b){
if(!f._max){
f._max = BigInt("0x7fffffffffffffff");
f._min = ~f._max;
}
return b >= f._min && b <= f._max;
};
const bigIntFits32 = (b)=>(b >= (-0x7fffffffn - 1n) && b <= 0x7fffffffn);
const bigIntFitsDouble = function f(b){
if(!f._min){
f._min = Number.MIN_SAFE_INTEGER;
f._max = Number.MAX_SAFE_INTEGER;
}
return b >= f._min && b <= f._max;
};
const isTypedArray = (v)=>{
return (v && v.constructor && isInt32(v.constructor.BYTES_PER_ELEMENT)) ? v : false;
};
const __SAB = ('undefined'===typeof SharedArrayBuffer)
? function(){} : SharedArrayBuffer;
const isSharedTypedArray = (aTypedArray)=>(aTypedArray.buffer instanceof __SAB);
const typedArrayPart = (aTypedArray, begin, end)=>{
return isSharedTypedArray(aTypedArray)
? aTypedArray.slice(begin, end)
: aTypedArray.subarray(begin, end);
};
const isBindableTypedArray = (v)=>{
return v && v.constructor && (1===v.constructor.BYTES_PER_ELEMENT);
};
const isSQLableTypedArray = (v)=>{
return v && v.constructor && (1===v.constructor.BYTES_PER_ELEMENT);
};
const affirmBindableTypedArray = (v)=>{
return isBindableTypedArray(v)
|| toss("Value is not of a supported TypedArray type.");
};
const utf8Decoder = new TextDecoder('utf-8');
const typedArrayToString = function(typedArray, begin, end){
return utf8Decoder.decode(typedArrayPart(typedArray, begin,end));
};
const flexibleString = function(v){
if(isSQLableTypedArray(v)) return typedArrayToString(v);
else if(Array.isArray(v)) return v.join('');
return v;
};
class WasmAllocError extends Error {
constructor(...args){
super(...args);
this.name = 'WasmAllocError';
}
};
WasmAllocError.toss = (...args)=>{
throw new WasmAllocError(...args);
};
const capi = {
sqlite3_create_function_v2: function(
pDb, funcName, nArg, eTextRep, pApp,
xFunc, xStep, xFinal, xDestroy
){},
sqlite3_create_function:function(
pDb, funcName, nArg, eTextRep, pApp,
xFunc, xStep, xFinal
){},
sqlite3_create_window_function: function(
pDb, funcName, nArg, eTextRep, pApp,
xStep, xFinal, xValue, xInverse, xDestroy
){},
sqlite3_prepare_v3: (dbPtr, sql, sqlByteLen, prepFlags,
stmtPtrPtr, strPtrPtr)=>{},
sqlite3_prepare_v2: (dbPtr, sql, sqlByteLen,
stmtPtrPtr,strPtrPtr)=>{},
sqlite3_exec: (pDb, sql, callback, pVoid, pErrMsg)=>{},
sqlite3_randomness: (n, outPtr)=>{},
util:{
affirmBindableTypedArray, flexibleString,
bigIntFits32, bigIntFits64, bigIntFitsDouble,
isBindableTypedArray,
isInt32, isSQLableTypedArray, isTypedArray,
typedArrayToString,
isUIThread: ()=>'undefined'===typeof WorkerGlobalScope,
isSharedTypedArray,
typedArrayPart
},
wasm: {
ptrSizeof: config.wasmPtrSizeof || 4,
ptrIR: config.wasmPtrIR || "i32",
bigIntEnabled: !!config.bigIntEnabled,
exports: config.exports
|| toss("Missing API config.exports (WASM module exports)."),
memory: config.memory || config.exports['memory']
|| toss("API config object requires a WebAssembly.Memory object",
"in either config.exports.memory (exported)",
"or config.memory (imported)."),
alloc: undefined,
dealloc: undefined
}
};
const wasm = capi.wasm, util = capi.util;
wasm.allocFromTypedArray = function(srcTypedArray){
affirmBindableTypedArray(srcTypedArray);
const pRet = wasm.alloc(srcTypedArray.byteLength || 1);
wasm.heapForSize(srcTypedArray.constructor).set(srcTypedArray.byteLength ? srcTypedArray : [0], pRet);
return pRet;
};
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|
const m = wasm.exports[keyAlloc](n);
if(!m) throw new WasmAllocError("Failed to allocate "+n+" bytes.");
return m;
};
wasm.dealloc = (m)=>wasm.exports[keyDealloc](m);
/**
Reports info about compile-time options using
sqlite_compileoption_get() and sqlite3_compileoption_used(). It
has several distinct uses:
If optName is an array then it is expected to be a list of
compilation options and this function returns an object
which maps each such option to true or false, indicating
whether or not the given option was included in this
build. That object is returned.
If optName is an object, its keys are expected to be compilation
options and this function sets each entry to true or false,
indicating whether the compilation option was used or not. That
object is returned.
If passed no arguments then it returns an object mapping
all known compilation options to their compile-time values,
or boolean true if they are defined with no value. This
result, which is relatively expensive to compute, is cached
and returned for future no-argument calls.
In all other cases it returns true if the given option was
active when when compiling the sqlite3 module, else false.
Compile-time option names may optionally include their
"SQLITE_" prefix. When it returns an object of all options,
the prefix is elided.
*/
wasm.compileOptionUsed = function f(optName){
if(!arguments.length){
if(f._result) return f._result;
else if(!f._opt){
f._rx = /^([^=]+)=(.+)/;
f._rxInt = /^-?\d+$/;
f._opt = function(opt, rv){
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|
const m = wasm.exports[keyAlloc](n);
if(!m) throw new WasmAllocError("Failed to allocate "+n+" bytes.");
return m;
};
wasm.dealloc = (m)=>wasm.exports[keyDealloc](m);
wasm.compileOptionUsed = function f(optName){
if(!arguments.length){
if(f._result) return f._result;
else if(!f._opt){
f._rx = /^([^=]+)=(.+)/;
f._rxInt = /^-?\d+$/;
f._opt = function(opt, rv){
|
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|
optName[k] = capi.sqlite3_compileoption_used(k);
});
return optName;
}
return (
'string'===typeof optName
) ? !!capi.sqlite3_compileoption_used(optName) : false;
}/*compileOptionUsed()*/;
/**
Signatures for the WASM-exported C-side functions. Each entry
is an array with 2+ elements:
[ "c-side name",
"result type" (wasm.xWrap() syntax),
[arg types in xWrap() syntax]
// ^^^ this needn't strictly be an array: it can be subsequent
// elements instead: [x,y,z] is equivalent to x,y,z
]
Note that support for the API-specific data types in the
result/argument type strings gets plugged in at a later phase in
the API initialization process.
*/
wasm.bindingSignatures = [
// Please keep these sorted by function name!
["sqlite3_aggregate_context","void*", "sqlite3_context*", "int"],
["sqlite3_bind_blob","int", "sqlite3_stmt*", "int", "*", "int", "*"
/* TODO: we should arguably write a custom wrapper which knows
how to handle Blob, TypedArrays, and JS strings. */
],
["sqlite3_bind_double","int", "sqlite3_stmt*", "int", "f64"],
["sqlite3_bind_int","int", "sqlite3_stmt*", "int", "int"],
["sqlite3_bind_null",undefined, "sqlite3_stmt*", "int"],
["sqlite3_bind_parameter_count", "int", "sqlite3_stmt*"],
["sqlite3_bind_parameter_index","int", "sqlite3_stmt*", "string"],
["sqlite3_bind_text","int", "sqlite3_stmt*", "int", "string", "int", "int"
/* We should arguably create a hand-written binding of
bind_text() which does more flexible text conversion, along
the lines of sqlite3_prepare_v3(). The slightly problematic
part is the final argument (text destructor). */
],
["sqlite3_close_v2", "int", "sqlite3*"],
["sqlite3_changes", "int", "sqlite3*"],
["sqlite3_clear_bindings","int", "sqlite3_stmt*"],
["sqlite3_column_blob","*", "sqlite3_stmt*", "int"],
["sqlite3_column_bytes","int", "sqlite3_stmt*", "int"],
["sqlite3_column_count", "int", "sqlite3_stmt*"],
["sqlite3_column_double","f64", "sqlite3_stmt*", "int"],
["sqlite3_column_int","int", "sqlite3_stmt*", "int"],
["sqlite3_column_name","string", "sqlite3_stmt*", "int"],
["sqlite3_column_text","string", "sqlite3_stmt*", "int"],
["sqlite3_column_type","int", "sqlite3_stmt*", "int"],
["sqlite3_compileoption_get", "string", "int"],
["sqlite3_compileoption_used", "int", "string"],
/* sqlite3_create_function(), sqlite3_create_function_v2(), and
sqlite3_create_window_function() use hand-written bindings to
simplify handling of their function-type arguments. */
["sqlite3_data_count", "int", "sqlite3_stmt*"],
["sqlite3_db_filename", "string", "sqlite3*", "string"],
["sqlite3_db_handle", "sqlite3*", "sqlite3_stmt*"],
["sqlite3_db_name", "string", "sqlite3*", "int"],
["sqlite3_deserialize", "int", "sqlite3*", "string", "*", "i64", "i64", "int"]
/* Careful! Short version: de/serialize() are problematic because they
might use a different allocator than the user for managing the
deserialized block. de/serialize() are ONLY safe to use with
sqlite3_malloc(), sqlite3_free(), and its 64-bit variants. */,
["sqlite3_errmsg", "string", "sqlite3*"],
["sqlite3_error_offset", "int", "sqlite3*"],
["sqlite3_errstr", "string", "int"],
/*["sqlite3_exec", "int", "sqlite3*", "string", "*", "*", "**"
Handled seperately to perform translation of the callback
into a WASM-usable one. ],*/
["sqlite3_expanded_sql", "string", "sqlite3_stmt*"],
["sqlite3_extended_errcode", "int", "sqlite3*"],
["sqlite3_extended_result_codes", "int", "sqlite3*", "int"],
["sqlite3_file_control", "int", "sqlite3*", "string", "int", "*"],
["sqlite3_finalize", "int", "sqlite3_stmt*"],
["sqlite3_free", undefined,"*"],
["sqlite3_initialize", undefined],
["sqlite3_interrupt", undefined, "sqlite3*"
/* ^^^ we cannot actually currently support this because JS is
single-threaded and we don't have a portable way to access a DB
from 2 SharedWorkers concurrently. */],
["sqlite3_libversion", "string"],
["sqlite3_libversion_number", "int"],
["sqlite3_malloc", "*","int"],
["sqlite3_open", "int", "string", "*"],
["sqlite3_open_v2", "int", "string", "*", "int", "string"],
/* sqlite3_prepare_v2() and sqlite3_prepare_v3() are handled
separately due to us requiring two different sets of semantics
for those, depending on how their SQL argument is provided. */
/* sqlite3_randomness() uses a hand-written wrapper to extend
the range of supported argument types. */
["sqlite3_realloc", "*","*","int"],
["sqlite3_reset", "int", "sqlite3_stmt*"],
["sqlite3_result_blob",undefined, "*", "*", "int", "*"],
["sqlite3_result_double",undefined, "*", "f64"],
["sqlite3_result_error",undefined, "*", "string", "int"],
["sqlite3_result_error_code", undefined, "*", "int"],
["sqlite3_result_error_nomem", undefined, "*"],
|
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|
optName[k] = capi.sqlite3_compileoption_used(k);
});
return optName;
}
return (
'string'===typeof optName
) ? !!capi.sqlite3_compileoption_used(optName) : false;
};
wasm.bindingSignatures = [
["sqlite3_aggregate_context","void*", "sqlite3_context*", "int"],
["sqlite3_bind_blob","int", "sqlite3_stmt*", "int", "*", "int", "*"
],
["sqlite3_bind_double","int", "sqlite3_stmt*", "int", "f64"],
["sqlite3_bind_int","int", "sqlite3_stmt*", "int", "int"],
["sqlite3_bind_null",undefined, "sqlite3_stmt*", "int"],
["sqlite3_bind_parameter_count", "int", "sqlite3_stmt*"],
["sqlite3_bind_parameter_index","int", "sqlite3_stmt*", "string"],
["sqlite3_bind_text","int", "sqlite3_stmt*", "int", "string", "int", "int"
],
["sqlite3_close_v2", "int", "sqlite3*"],
["sqlite3_changes", "int", "sqlite3*"],
["sqlite3_clear_bindings","int", "sqlite3_stmt*"],
["sqlite3_column_blob","*", "sqlite3_stmt*", "int"],
["sqlite3_column_bytes","int", "sqlite3_stmt*", "int"],
["sqlite3_column_count", "int", "sqlite3_stmt*"],
["sqlite3_column_double","f64", "sqlite3_stmt*", "int"],
["sqlite3_column_int","int", "sqlite3_stmt*", "int"],
["sqlite3_column_name","string", "sqlite3_stmt*", "int"],
["sqlite3_column_text","string", "sqlite3_stmt*", "int"],
["sqlite3_column_type","int", "sqlite3_stmt*", "int"],
["sqlite3_compileoption_get", "string", "int"],
["sqlite3_compileoption_used", "int", "string"],
["sqlite3_data_count", "int", "sqlite3_stmt*"],
["sqlite3_db_filename", "string", "sqlite3*", "string"],
["sqlite3_db_handle", "sqlite3*", "sqlite3_stmt*"],
["sqlite3_db_name", "string", "sqlite3*", "int"],
["sqlite3_deserialize", "int", "sqlite3*", "string", "*", "i64", "i64", "int"]
,
["sqlite3_errmsg", "string", "sqlite3*"],
["sqlite3_error_offset", "int", "sqlite3*"],
["sqlite3_errstr", "string", "int"],
["sqlite3_expanded_sql", "string", "sqlite3_stmt*"],
["sqlite3_extended_errcode", "int", "sqlite3*"],
["sqlite3_extended_result_codes", "int", "sqlite3*", "int"],
["sqlite3_file_control", "int", "sqlite3*", "string", "int", "*"],
["sqlite3_finalize", "int", "sqlite3_stmt*"],
["sqlite3_free", undefined,"*"],
["sqlite3_initialize", undefined],
["sqlite3_interrupt", undefined, "sqlite3*"
],
["sqlite3_libversion", "string"],
["sqlite3_libversion_number", "int"],
["sqlite3_malloc", "*","int"],
["sqlite3_open", "int", "string", "*"],
["sqlite3_open_v2", "int", "string", "*", "int", "string"],
["sqlite3_realloc", "*","*","int"],
["sqlite3_reset", "int", "sqlite3_stmt*"],
["sqlite3_result_blob",undefined, "*", "*", "int", "*"],
["sqlite3_result_double",undefined, "*", "f64"],
["sqlite3_result_error",undefined, "*", "string", "int"],
["sqlite3_result_error_code", undefined, "*", "int"],
["sqlite3_result_error_nomem", undefined, "*"],
|
︙ | | | ︙ | |
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|
["sqlite3_value_double","f64", "sqlite3_value*"],
["sqlite3_value_int","int", "sqlite3_value*"],
["sqlite3_value_text", "string", "sqlite3_value*"],
["sqlite3_value_type", "int", "sqlite3_value*"],
["sqlite3_vfs_find", "*", "string"],
["sqlite3_vfs_register", "int", "sqlite3_vfs*", "int"],
["sqlite3_vfs_unregister", "int", "sqlite3_vfs*"]
]/*wasm.bindingSignatures*/;
if(false && wasm.compileOptionUsed('SQLITE_ENABLE_NORMALIZE')){
/* ^^^ "the problem" is that this is an option feature and the
build-time function-export list does not currently take
optional features into account. */
wasm.bindingSignatures.push(["sqlite3_normalized_sql", "string", "sqlite3_stmt*"]);
}
/**
Functions which require BigInt (int64) support are separated from
the others because we need to conditionally bind them or apply
dummy impls, depending on the capabilities of the environment.
*/
wasm.bindingSignatures.int64 = [
["sqlite3_bind_int64","int", ["sqlite3_stmt*", "int", "i64"]],
["sqlite3_changes64","i64", ["sqlite3*"]],
["sqlite3_column_int64","i64", ["sqlite3_stmt*", "int"]],
["sqlite3_malloc64", "*","i64"],
["sqlite3_msize", "i64", "*"],
["sqlite3_realloc64", "*","*", "i64"],
["sqlite3_result_int64",undefined, "*", "i64"],
["sqlite3_total_changes64", "i64", ["sqlite3*"]],
["sqlite3_uri_int64", "i64", ["string", "string", "i64"]],
["sqlite3_value_int64","i64", "sqlite3_value*"],
];
/**
Functions which are intended solely for API-internal use by the
WASM components, not client code. These get installed into
capi.wasm.
*/
wasm.bindingSignatures.wasm = [
["sqlite3_wasm_db_reset", "int", "sqlite3*"],
["sqlite3_wasm_db_vfs", "sqlite3_vfs*", "sqlite3*","string"],
["sqlite3_wasm_vfs_unlink", "int", "sqlite3_vfs*","string"]
];
/**
sqlite3.wasm.pstack (pseudo-stack) holds a special-case
stack-style allocator intended only for use with _small_ data of
not more than (in total) a few kb in size, managed as if it were
stack-based.
It has only a single intended usage:
```
const stackPos = pstack.pointer;
try{
const ptr = pstack.alloc(8);
// ==> pstack.pointer === ptr
const otherPtr = pstack.alloc(8);
// ==> pstack.pointer === otherPtr
...
}finally{
pstack.restore(stackPos);
// ==> pstack.pointer === stackPos
}
```
This allocator is much faster than a general-purpose one but is
limited to usage patterns like the one shown above.
It operates from a static range of memory which lives outside of
space managed by Emscripten's stack-management, so does not
collide with Emscripten-provided stack allocation APIs. The
memory lives in the WASM heap and can be used with routines such
as wasm.setMemValue() and any wasm.heap8u().slice().
*/
wasm.pstack = Object.assign(Object.create(null),{
/**
Sets the current pstack position to the given pointer. Results
are undefined if the passed-in value did not come from
this.pointer.
*/
restore: wasm.exports.sqlite3_wasm_pstack_restore,
/**
Attempts to allocate the given number of bytes from the
pstack. On success, it zeroes out a block of memory of the
given size, adjusts the pstack pointer, and returns a pointer
to the memory. On error, returns throws a WasmAllocError. The
memory must eventually be released using restore().
This method always adjusts the given value to be a multiple
of 8 bytes because failing to do so can lead to incorrect
results when reading and writing 64-bit values from/to the WASM
heap. Similarly, the returned address is always 8-byte aligned.
*/
alloc: (n)=>{
return wasm.exports.sqlite3_wasm_pstack_alloc(n)
|| WasmAllocError.toss("Could not allocate",n,
"bytes from the pstack.");
},
/**
alloc()'s n chunks, each sz bytes, as a single memory block and
returns the addresses as an array of n element, each holding
the address of one chunk.
Throws a WasmAllocError if allocation fails.
Example:
```
const [p1, p2, p3] = wasm.pstack.allocChunks(3,4);
```
*/
allocChunks: (n,sz)=>{
const mem = wasm.pstack.alloc(n * sz);
const rc = [];
let i = 0, offset = 0;
for(; i < n; offset = (sz * ++i)){
rc.push(mem + offset);
}
return rc;
},
/**
A convenience wrapper for allocChunks() which sizes each chunk
as either 8 bytes (safePtrSize is truthy) or wasm.ptrSizeof (if
safePtrSize is falsy).
How it returns its result differs depending on its first
argument: if it's 1, it returns a single pointer value. If it's
more than 1, it returns the same as allocChunks().
When a returned pointers will refer to a 64-bit value, e.g. a
double or int64, and that value must be written or fetched,
e.g. using wasm.setMemValue() or wasm.getMemValue(), it is
important that the pointer in question be aligned to an 8-byte
boundary or else it will not be fetched or written properly and
will corrupt or read neighboring memory.
However, when all pointers involved point to "small" data, it
is safe to pass a falsy value to save a tiny bit of memory.
*/
allocPtr: (n=1,safePtrSize=true)=>{
return 1===n
? wasm.pstack.alloc(safePtrSize ? 8 : wasm.ptrSizeof)
: wasm.pstack.allocChunks(n, safePtrSize ? 8 : wasm.ptrSizeof);
}
})/*wasm.pstack*/;
Object.defineProperties(wasm.pstack, {
/**
sqlite3.wasm.pstack.pointer resolves to the current pstack
position pointer. This value is intended _only_ to be saved
for passing to restore(). Writing to this memory, without
first reserving it via wasm.pstack.alloc() and friends, leads
to undefined results.
*/
pointer: {
configurable: false, iterable: true, writeable: false,
get: wasm.exports.sqlite3_wasm_pstack_ptr
//Whether or not a setter as an alternative to restore() is
//clearer or would just lead to confusion is unclear.
//set: wasm.exports.sqlite3_wasm_pstack_restore
},
/**
Resolves to the total number of bytes available in the pstack,
including any space which is currently allocated. This value is
a compile-time constant.
*/
quota: {
configurable: false, iterable: true, writeable: false,
get: wasm.exports.sqlite3_wasm_pstack_quota
}
})/*wasm.pstack properties*/;
/**
sqlite3.wasm.pstack.remaining resolves to the amount of
space remaining in the pstack.
*/
Object.defineProperty(wasm.pstack, 'remaining', {
configurable: false, iterable: true, writeable: false,
get: wasm.exports.sqlite3_wasm_pstack_remaining
});
/**
An Error subclass specifically for reporting DB-level errors and
enabling clients to unambiguously identify such exceptions.
The C-level APIs never throw, but some of the higher-level
C-style APIs do and the object-oriented APIs use exceptions
exclusively to report errors.
*/
class SQLite3Error extends Error {
/**
Constructs this object with a message equal to all arguments
concatenated with a space between each one. As a special case,
if it's passed only a single integer argument, the string form
of that argument is the result of
sqlite3.capi.sqlite3_js_rc_str() or (if that returns falsy), a
synthesized string which contains that integer.
*/
constructor(...args){
if(1===args.length && 'number'===typeof args[0] && args[0]===(args[0] | 0)){
super(capi.sqlite3_js_rc_str(args[0]) || ("Unknown result code #"+args[0]));
}else{
super(args.join(' '));
}
this.name = 'SQLite3Error';
}
};
/**
Functionally equivalent to the SQLite3Error constructor but may
be used as part of an expression, e.g.:
```
return someFunction(x) || SQLite3Error.toss(...);
```
*/
SQLite3Error.toss = (...args)=>{
throw new SQLite3Error(...args);
};
capi.sqlite3_randomness = (...args)=>{
if(1===args.length && util.isTypedArray(args[0])
&& 1===args[0].BYTES_PER_ELEMENT){
|
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["sqlite3_value_double","f64", "sqlite3_value*"],
["sqlite3_value_int","int", "sqlite3_value*"],
["sqlite3_value_text", "string", "sqlite3_value*"],
["sqlite3_value_type", "int", "sqlite3_value*"],
["sqlite3_vfs_find", "*", "string"],
["sqlite3_vfs_register", "int", "sqlite3_vfs*", "int"],
["sqlite3_vfs_unregister", "int", "sqlite3_vfs*"]
];
if(false && wasm.compileOptionUsed('SQLITE_ENABLE_NORMALIZE')){
wasm.bindingSignatures.push(["sqlite3_normalized_sql", "string", "sqlite3_stmt*"]);
}
wasm.bindingSignatures.int64 = [
["sqlite3_bind_int64","int", ["sqlite3_stmt*", "int", "i64"]],
["sqlite3_changes64","i64", ["sqlite3*"]],
["sqlite3_column_int64","i64", ["sqlite3_stmt*", "int"]],
["sqlite3_malloc64", "*","i64"],
["sqlite3_msize", "i64", "*"],
["sqlite3_realloc64", "*","*", "i64"],
["sqlite3_result_int64",undefined, "*", "i64"],
["sqlite3_total_changes64", "i64", ["sqlite3*"]],
["sqlite3_uri_int64", "i64", ["string", "string", "i64"]],
["sqlite3_value_int64","i64", "sqlite3_value*"],
];
wasm.bindingSignatures.wasm = [
["sqlite3_wasm_db_reset", "int", "sqlite3*"],
["sqlite3_wasm_db_vfs", "sqlite3_vfs*", "sqlite3*","string"],
["sqlite3_wasm_vfs_unlink", "int", "sqlite3_vfs*","string"]
];
wasm.pstack = Object.assign(Object.create(null),{
restore: wasm.exports.sqlite3_wasm_pstack_restore,
alloc: (n)=>{
return wasm.exports.sqlite3_wasm_pstack_alloc(n)
|| WasmAllocError.toss("Could not allocate",n,
"bytes from the pstack.");
},
allocChunks: (n,sz)=>{
const mem = wasm.pstack.alloc(n * sz);
const rc = [];
let i = 0, offset = 0;
for(; i < n; offset = (sz * ++i)){
rc.push(mem + offset);
}
return rc;
},
allocPtr: (n=1,safePtrSize=true)=>{
return 1===n
? wasm.pstack.alloc(safePtrSize ? 8 : wasm.ptrSizeof)
: wasm.pstack.allocChunks(n, safePtrSize ? 8 : wasm.ptrSizeof);
}
});
Object.defineProperties(wasm.pstack, {
pointer: {
configurable: false, iterable: true, writeable: false,
get: wasm.exports.sqlite3_wasm_pstack_ptr
},
quota: {
configurable: false, iterable: true, writeable: false,
get: wasm.exports.sqlite3_wasm_pstack_quota
},
remaining: {
configurable: false, iterable: true, writeable: false,
get: wasm.exports.sqlite3_wasm_pstack_remaining
}
});
class SQLite3Error extends Error {
constructor(...args){
if(1===args.length && 'number'===typeof args[0] && args[0]===(args[0] | 0)){
super(capi.sqlite3_js_rc_str(args[0]) || ("Unknown result code #"+args[0]));
}else{
super(args.join(' '));
}
this.name = 'SQLite3Error';
}
};
SQLite3Error.toss = (...args)=>{
throw new SQLite3Error(...args);
};
capi.sqlite3_randomness = (...args)=>{
if(1===args.length && util.isTypedArray(args[0])
&& 1===args[0].BYTES_PER_ELEMENT){
|
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|
wasm.pstack.restore(stack);
}
return ta;
}
capi.wasm.exports.sqlite3_randomness(...args);
};
/** State for sqlite3_wasmfs_opfs_dir(). */
let __wasmfsOpfsDir = undefined;
/**
If the wasm environment has a WASMFS/OPFS-backed persistent
storage directory, its path is returned by this function. If it
does not then it returns "" (noting that "" is a falsy value).
The first time this is called, this function inspects the current
environment to determine whether persistence support is available
and, if it is, enables it (if needed).
This function currently only recognizes the WASMFS/OPFS storage
combination and its path refers to storage rooted in the
Emscripten-managed virtual filesystem.
*/
capi.sqlite3_wasmfs_opfs_dir = function(){
if(undefined !== __wasmfsOpfsDir) return __wasmfsOpfsDir;
// If we have no OPFS, there is no persistent dir
const pdir = config.wasmfsOpfsDir;
if(!pdir
|| !self.FileSystemHandle
|| !self.FileSystemDirectoryHandle
|| !self.FileSystemFileHandle){
return __wasmfsOpfsDir = "";
}
try{
if(pdir && 0===wasm.xCallWrapped(
'sqlite3_wasm_init_wasmfs', 'i32', ['string'], pdir
)){
return __wasmfsOpfsDir = pdir;
}else{
return __wasmfsOpfsDir = "";
}
}catch(e){
// sqlite3_wasm_init_wasmfs() is not available
return __wasmfsOpfsDir = "";
}
};
/**
Experimental and subject to change or removal.
Returns true if sqlite3.capi.sqlite3_wasmfs_opfs_dir() is a
non-empty string and the given name starts with (that string +
'/'), else returns false.
*/
capi.sqlite3_wasmfs_filename_is_persistent = function(name){
const p = capi.sqlite3_wasmfs_opfs_dir();
return (p && name) ? name.startsWith(p+'/') : false;
};
// This bit is highly arguable and is incompatible with the fiddle shell.
if(false && 0===wasm.exports.sqlite3_vfs_find(0)){
/* Assume that sqlite3_initialize() has not yet been called.
This will be the case in an SQLITE_OS_KV build. */
wasm.exports.sqlite3_initialize();
}
/**
Given an `sqlite3*`, an sqlite3_vfs name, and an optional db
name, returns a truthy value (see below) if that db handle uses
that VFS, else returns false. If pDb is falsy then the 3rd
argument is ignored and this function returns a truthy value if
the default VFS name matches that of the 2nd argument. Results
are undefined if pDb is truthy but refers to an invalid
pointer. The 3rd argument specifies the database name of the
given database connection to check, defaulting to the main db.
The 2nd and 3rd arguments may either be a JS string or a WASM
C-string. If the 2nd argument is a NULL WASM pointer, the default
VFS is assumed. If the 3rd is a NULL WASM pointer, "main" is
assumed.
The truthy value it returns is a pointer to the `sqlite3_vfs`
object.
To permit safe use of this function from APIs which may be called
via the C stack (like SQL UDFs), this function does not throw: if
bad arguments cause a conversion error when passing into
wasm-space, false is returned.
*/
capi.sqlite3_js_db_uses_vfs = function(pDb,vfsName,dbName="main"){
try{
const pK = capi.sqlite3_vfs_find(vfsName);
if(!pK) return false;
else if(!pDb){
return pK===capi.sqlite3_vfs_find(0) ? pK : false;
}else{
return pK===capi.sqlite3_js_db_vfs(pDb) ? pK : false;
}
}catch(e){
/* Ignore - probably bad args to a wasm-bound function. */
return false;
}
};
/**
Returns an array of the names of all currently-registered sqlite3
VFSes.
*/
capi.sqlite3_js_vfs_list = function(){
const rc = [];
let pVfs = capi.sqlite3_vfs_find(0);
while(pVfs){
const oVfs = new capi.sqlite3_vfs(pVfs);
rc.push(wasm.cstringToJs(oVfs.$zName));
pVfs = oVfs.$pNext;
oVfs.dispose();
}
return rc;
};
/**
Serializes the given `sqlite3*` pointer to a Uint8Array, as per
sqlite3_serialize(). On success it returns a Uint8Array. On
error it throws with a description of the problem.
*/
capi.sqlite3_js_db_export = function(pDb){
if(!pDb) toss('Invalid sqlite3* argument.');
if(!wasm.bigIntEnabled) toss('BigInt64 support is not enabled.');
const stack = wasm.pstack.pointer;
let pOut;
try{
const pSize = wasm.pstack.alloc(8/*i64*/ + wasm.ptrSizeof);
const ppOut = pSize + 8;
/**
Maintenance reminder, since this cost a full hour of grief
and confusion: if the order of pSize/ppOut are reversed in
that memory block, fetching the value of pSize after the
export reads a garbage size because it's not on an 8-byte
memory boundary!
*/
let rc = wasm.exports.sqlite3_wasm_db_serialize(
pDb, ppOut, pSize, 0
);
if(rc){
toss("Database serialization failed with code",
sqlite3.capi.sqlite3_js_rc_str(rc));
}
pOut = wasm.getPtrValue(ppOut);
const nOut = wasm.getMemValue(pSize, 'i64');
rc = nOut
? wasm.heap8u().slice(pOut, pOut + Number(nOut))
: new Uint8Array();
return rc;
}finally{
if(pOut) wasm.exports.sqlite3_free(pOut);
wasm.pstack.restore(stack);
}
};
/**
Given a `sqlite3*` and a database name (JS string or WASM
C-string pointer, which may be 0), returns a pointer to the
sqlite3_vfs responsible for it. If the given db name is null/0,
or not provided, then "main" is assumed.
*/
capi.sqlite3_js_db_vfs =
(dbPointer, dbName=0)=>wasm.sqlite3_wasm_db_vfs(dbPointer, dbName);
/**
A thin wrapper around capi.sqlite3_aggregate_context() which
behaves the same except that it throws a WasmAllocError if that
function returns 0. As a special case, if n is falsy it does
_not_ throw if that function returns 0. That special case is
intended for use with xFinal() implementations.
*/
capi.sqlite3_js_aggregate_context = (pCtx, n)=>{
return capi.sqlite3_aggregate_context(pCtx, n)
|| (n ? WasmAllocError.toss("Cannot allocate",n,
"bytes for sqlite3_aggregate_context()")
: 0);
};
if( capi.util.isUIThread() ){
/* Features specific to the main window thread... */
/**
Internal helper for sqlite3_js_kvvfs_clear() and friends.
Its argument should be one of ('local','session','').
*/
const __kvvfsInfo = function(which){
const rc = Object.create(null);
rc.prefix = 'kvvfs-'+which;
rc.stores = [];
if('session'===which || ''===which) rc.stores.push(self.sessionStorage);
if('local'===which || ''===which) rc.stores.push(self.localStorage);
return rc;
};
/**
Clears all storage used by the kvvfs DB backend, deleting any
DB(s) stored there. Its argument must be either 'session',
'local', or ''. In the first two cases, only sessionStorage
resp. localStorage is cleared. If it's an empty string (the
default) then both are cleared. Only storage keys which match
the pattern used by kvvfs are cleared: any other client-side
data are retained.
This function is only available in the main window thread.
Returns the number of entries cleared.
*/
capi.sqlite3_js_kvvfs_clear = function(which=''){
let rc = 0;
const kvinfo = __kvvfsInfo(which);
kvinfo.stores.forEach((s)=>{
const toRm = [] /* keys to remove */;
let i;
for( i = 0; i < s.length; ++i ){
const k = s.key(i);
if(k.startsWith(kvinfo.prefix)) toRm.push(k);
}
toRm.forEach((kk)=>s.removeItem(kk));
rc += toRm.length;
});
return rc;
};
/**
This routine guesses the approximate amount of
window.localStorage and/or window.sessionStorage in use by the
kvvfs database backend. Its argument must be one of
('session', 'local', ''). In the first two cases, only
sessionStorage resp. localStorage is counted. If it's an empty
string (the default) then both are counted. Only storage keys
which match the pattern used by kvvfs are counted. The returned
value is the "length" value of every matching key and value,
noting that JavaScript stores each character in 2 bytes.
Note that the returned size is not authoritative from the
perspective of how much data can fit into localStorage and
sessionStorage, as the precise algorithms for determining
those limits are unspecified and may include per-entry
overhead invisible to clients.
*/
capi.sqlite3_js_kvvfs_size = function(which=''){
let sz = 0;
const kvinfo = __kvvfsInfo(which);
kvinfo.stores.forEach((s)=>{
let i;
for(i = 0; i < s.length; ++i){
const k = s.key(i);
if(k.startsWith(kvinfo.prefix)){
sz += k.length;
sz += s.getItem(k).length;
}
}
});
return sz * 2 /* because JS uses 2-byte char encoding */;
};
}/* main-window-only bits */
/* The remainder of the API will be set up in later steps. */
const sqlite3 = {
WasmAllocError: WasmAllocError,
SQLite3Error: SQLite3Error,
capi,
config,
/**
Holds the version info of the sqlite3 source tree from which
the generated sqlite3-api.js gets built. Note that its version
may well differ from that reported by sqlite3_libversion(), but
that should be considered a source file mismatch, as the JS and
WASM files are intended to be built and distributed together.
This object is initially a placeholder which gets replaced by a
build-generated object.
*/
version: Object.create(null),
/**
Performs any optional asynchronous library-level initialization
which might be required. This function returns a Promise which
resolves to the sqlite3 namespace object. Any error in the
async init will be fatal to the init as a whole, but init
routines are themselves welcome to install dummy catch()
handlers which are not fatal if their failure should be
considered non-fatal. If called more than once, the second and
subsequent calls are no-ops which return a pre-resolved
Promise.
Ideally this function is called as part of the Promise chain
which handles the loading and bootstrapping of the API. If not
then it must be called by client-level code, which must not use
the library until the returned promise resolves.
Bug: if called while a prior call is still resolving, the 2nd
call will resolve prematurely, before the 1st call has finished
resolving. The current build setup precludes that possibility,
so it's only a hypothetical problem if/when this function
ever needs to be invoked by clients.
In Emscripten-based builds, this function is called
automatically and deleted from this object.
*/
asyncPostInit: async function(){
let lip = sqlite3ApiBootstrap.initializersAsync;
delete sqlite3ApiBootstrap.initializersAsync;
if(!lip || !lip.length) return Promise.resolve(sqlite3);
// Is it okay to resolve these in parallel or do we need them
// to resolve in order? We currently only have 1, so it
// makes no difference.
lip = lip.map((f)=>{
const p = (f instanceof Promise) ? f : f(sqlite3);
return p.catch((e)=>{
console.error("an async sqlite3 initializer failed:",e);
throw e;
});
});
//let p = lip.shift();
//while(lip.length) p = p.then(lip.shift());
//return p.then(()=>sqlite3);
return Promise.all(lip).then(()=>sqlite3);
},
/**
scriptInfo ideally gets injected into this object by the
infrastructure which assembles the JS/WASM module. It contains
state which must be collected before sqlite3ApiBootstrap() can
be declared. It is not necessarily available to any
sqlite3ApiBootstrap.initializers but "should" be in place (if
it's added at all) by the time that
sqlite3ApiBootstrap.initializersAsync is processed.
This state is not part of the public API, only intended for use
with the sqlite3 API bootstrapping and wasm-loading process.
*/
scriptInfo: undefined
};
try{
sqlite3ApiBootstrap.initializers.forEach((f)=>{
f(sqlite3);
});
}catch(e){
/* If we don't report this here, it can get completely swallowed
up and disappear into the abyss of Promises and Workers. */
console.error("sqlite3 bootstrap initializer threw:",e);
throw e;
}
delete sqlite3ApiBootstrap.initializers;
sqlite3ApiBootstrap.sqlite3 = sqlite3;
return sqlite3;
}/*sqlite3ApiBootstrap()*/;
/**
self.sqlite3ApiBootstrap.initializers is an internal detail used by
the various pieces of the sqlite3 API's amalgamation process. It
must not be modified by client code except when plugging such code
into the amalgamation process.
Each component of the amalgamation is expected to append a function
to this array. When sqlite3ApiBootstrap() is called for the first
time, each such function will be called (in their appended order)
and passed the sqlite3 namespace object, into which they can install
their features (noting that most will also require that certain
features alread have been installed). At the end of that process,
this array is deleted.
Note that the order of insertion into this array is significant for
some pieces. e.g. sqlite3.capi and sqlite3.capi.wasm cannot be fully
utilized until the whwasmutil.js part is plugged in via
sqlite3-api-glue.js.
*/
self.sqlite3ApiBootstrap.initializers = [];
/**
self.sqlite3ApiBootstrap.initializersAsync is an internal detail
used by the sqlite3 API's amalgamation process. It must not be
modified by client code except when plugging such code into the
amalgamation process.
The counterpart of self.sqlite3ApiBootstrap.initializers,
specifically for initializers which are asynchronous. All entries in
this list must be either async functions, non-async functions which
return a Promise, or a Promise. Each function in the list is called
with the sqlite3 ojbect as its only argument.
The resolved value of any Promise is ignored and rejection will kill
the asyncPostInit() process (at an indeterminate point because all
of them are run asynchronously in parallel).
This list is not processed until the client calls
sqlite3.asyncPostInit(). This means, for example, that intializers
added to self.sqlite3ApiBootstrap.initializers may push entries to
this list.
*/
self.sqlite3ApiBootstrap.initializersAsync = [];
/**
Client code may assign sqlite3ApiBootstrap.defaultConfig an
object-type value before calling sqlite3ApiBootstrap() (without
arguments) in order to tell that call to use this object as its
default config value. The intention of this is to provide
downstream clients with a reasonably flexible approach for plugging in
an environment-suitable configuration without having to define a new
global-scope symbol.
*/
self.sqlite3ApiBootstrap.defaultConfig = Object.create(null);
/**
Placeholder: gets installed by the first call to
self.sqlite3ApiBootstrap(). However, it is recommended that the
caller of sqlite3ApiBootstrap() capture its return value and delete
self.sqlite3ApiBootstrap after calling it. It returns the same
value which will be stored here.
*/
self.sqlite3ApiBootstrap.sqlite3 = undefined;
/* END FILE: api/sqlite3-api-prologue.js */
/* BEGIN FILE: common/whwasmutil.js */
/**
2022-07-08
The author disclaims copyright to this source code. In place of a
legal notice, here is a blessing:
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
***********************************************************************
The whwasmutil is developed in conjunction with the Jaccwabyt
project:
https://fossil.wanderinghorse.net/r/jaccwabyt
and sqlite3:
https://sqlite.org
This file is kept in sync between both of those trees.
Maintenance reminder: If you're reading this in a tree other than
one of those listed above, note that this copy may be replaced with
upstream copies of that one from time to time. Thus the code
installed by this function "should not" be edited outside of those
projects, else it risks getting overwritten.
*/
/**
This function is intended to simplify porting around various bits
of WASM-related utility code from project to project.
The primary goal of this code is to replace, where possible,
Emscripten-generated glue code with equivalent utility code which
can be used in arbitrary WASM environments built with toolchains
other than Emscripten. As of this writing, this code is capable of
acting as a replacement for Emscripten's generated glue code
_except_ that the latter installs handlers for Emscripten-provided
APIs such as its "FS" (virtual filesystem) API. Loading of such
things still requires using Emscripten's glue, but the post-load
utility APIs provided by this code are still usable as replacements
for their sub-optimally-documented Emscripten counterparts.
Intended usage:
```
self.WhWasmUtilInstaller(appObject);
delete self.WhWasmUtilInstaller;
```
Its global-scope symbol is intended only to provide an easy way to
make it available to 3rd-party scripts and "should" be deleted
after calling it. That symbols is _not_ used within the library.
Forewarning: this API explicitly targets only browser
environments. If a given non-browser environment has the
capabilities needed for a given feature (e.g. TextEncoder), great,
but it does not go out of its way to account for them and does not
provide compatibility crutches for them.
It currently offers alternatives to the following
Emscripten-generated APIs:
- OPTIONALLY memory allocation, but how this gets imported is
environment-specific. Most of the following features only work
if allocation is available.
- WASM-exported "indirect function table" access and
manipulation. e.g. creating new WASM-side functions using JS
functions, analog to Emscripten's addFunction() and
uninstallFunction() but slightly different.
- Get/set specific heap memory values, analog to Emscripten's
getValue() and setValue().
- String length counting in UTF-8 bytes (C-style and JS strings).
- JS string to C-string conversion and vice versa, analog to
Emscripten's stringToUTF8Array() and friends, but with slighter
different interfaces.
- JS string to Uint8Array conversion, noting that browsers actually
already have this built in via TextEncoder.
- "Scoped" allocation, such that allocations made inside of a given
explicit scope will be automatically cleaned up when the scope is
closed. This is fundamentally similar to Emscripten's
stackAlloc() and friends but uses the heap instead of the stack
because access to the stack requires C code.
- Create JS wrappers for WASM functions, analog to Emscripten's
ccall() and cwrap() functions, except that the automatic
conversions for function arguments and return values can be
easily customized by the client by assigning custom function
signature type names to conversion functions. Essentially,
it's ccall() and cwrap() on steroids.
How to install...
Passing an object to this function will install the functionality
into that object. Afterwards, client code "should" delete the global
symbol.
This code requires that the target object have the following
properties, noting that they needn't be available until the first
time one of the installed APIs is used (as opposed to when this
function is called) except where explicitly noted:
- `exports` must be a property of the target object OR a property
of `target.instance` (a WebAssembly.Module instance) and it must
contain the symbols exported by the WASM module associated with
this code. In an Enscripten environment it must be set to
`Module['asm']`. The exports object must contain a minimum of the
following symbols:
- `memory`: a WebAssembly.Memory object representing the WASM
memory. _Alternately_, the `memory` property can be set as
`target.memory`, in particular if the WASM heap memory is
initialized in JS an _imported_ into WASM, as opposed to being
initialized in WASM and exported to JS.
- `__indirect_function_table`: the WebAssembly.Table object which
holds WASM-exported functions. This API does not strictly
require that the table be able to grow but it will throw if its
`installFunction()` is called and the table cannot grow.
In order to simplify downstream usage, if `target.exports` is not
set when this is called then a property access interceptor
(read-only, configurable, enumerable) gets installed as `exports`
which resolves to `target.instance.exports`, noting that the latter
property need not exist until the first time `target.exports` is
accessed.
Some APIs _optionally_ make use of the `bigIntEnabled` property of
the target object. It "should" be set to true if the WASM
environment is compiled with BigInt support, else it must be
false. If it is false, certain BigInt-related features will trigger
an exception if invoked. This property, if not set when this is
called, will get a default value of true only if the BigInt64Array
constructor is available, else it will default to false. Note that
having the BigInt type is not sufficient for full int64 integration
with WASM: the target WASM file must also have been built with
that support. In Emscripten that's done using the `-sWASM_BIGINT`
flag.
Some optional APIs require that the target have the following
methods:
- 'alloc()` must behave like C's `malloc()`, allocating N bytes of
memory and returning its pointer. In Emscripten this is
conventionally made available via `Module['_malloc']`. This API
requires that the alloc routine throw on allocation error, as
opposed to returning null or 0.
- 'dealloc()` must behave like C's `free()`, accepting either a
pointer returned from its allocation counterpart or the values
null/0 (for which it must be a no-op). allocating N bytes of
memory and returning its pointer. In Emscripten this is
conventionally made available via `Module['_free']`.
APIs which require allocation routines are explicitly documented as
such and/or have "alloc" in their names.
This code is developed and maintained in conjunction with the
Jaccwabyt project:
https://fossil.wanderinghorse.net/r/jaccwabbyt
More specifically:
https://fossil.wanderinghorse.net/r/jaccwabbyt/file/common/whwasmutil.js
*/
self.WhWasmUtilInstaller = function(target){
'use strict';
if(undefined===target.bigIntEnabled){
target.bigIntEnabled = !!self['BigInt64Array'];
}
/** Throws a new Error, the message of which is the concatenation of
all args with a space between each. */
const toss = (...args)=>{throw new Error(args.join(' '))};
if(!target.exports){
Object.defineProperty(target, 'exports', {
enumerable: true, configurable: true,
get: ()=>(target.instance && target.instance.exports)
});
}
/*********
alloc()/dealloc() auto-install...
This would be convenient but it can also cause us to pick up
malloc() even when the client code is using a different exported
allocator (who, me?), which is bad. malloc() may be exported even
if we're not explicitly using it and overriding the malloc()
function, linking ours first, is not always feasible when using a
malloc() proxy, as it can lead to recursion and stack overflow
(who, me?). So... we really need the downstream code to set up
target.alloc/dealloc() itself.
******/
/******
if(target.exports){
//Maybe auto-install alloc()/dealloc()...
if(!target.alloc && target.exports.malloc){
target.alloc = function(n){
const m = this(n);
return m || toss("Allocation of",n,"byte(s) failed.");
}.bind(target.exports.malloc);
}
if(!target.dealloc && target.exports.free){
target.dealloc = function(ptr){
if(ptr) this(ptr);
}.bind(target.exports.free);
}
}*******/
/**
Pointers in WASM are currently assumed to be 32-bit, but someday
that will certainly change.
*/
const ptrIR = target.pointerIR || 'i32';
const ptrSizeof = target.ptrSizeof =
('i32'===ptrIR ? 4
: ('i64'===ptrIR
? 8 : toss("Unhandled ptrSizeof:",ptrIR)));
/** Stores various cached state. */
const cache = Object.create(null);
/** Previously-recorded size of cache.memory.buffer, noted so that
we can recreate the view objects if the heap grows. */
cache.heapSize = 0;
/** WebAssembly.Memory object extracted from target.memory or
target.exports.memory the first time heapWrappers() is
called. */
cache.memory = null;
/** uninstallFunction() puts table indexes in here for reuse and
installFunction() extracts them. */
cache.freeFuncIndexes = [];
/**
Used by scopedAlloc() and friends.
*/
cache.scopedAlloc = [];
cache.utf8Decoder = new TextDecoder();
cache.utf8Encoder = new TextEncoder('utf-8');
/**
If (cache.heapSize !== cache.memory.buffer.byteLength), i.e. if
the heap has grown since the last call, updates cache.HEAPxyz.
Returns the cache object.
*/
const heapWrappers = function(){
if(!cache.memory){
cache.memory = (target.memory instanceof WebAssembly.Memory)
? target.memory : target.exports.memory;
}else if(cache.heapSize === cache.memory.buffer.byteLength){
return cache;
}
// heap is newly-acquired or has been resized....
const b = cache.memory.buffer;
cache.HEAP8 = new Int8Array(b); cache.HEAP8U = new Uint8Array(b);
cache.HEAP16 = new Int16Array(b); cache.HEAP16U = new Uint16Array(b);
cache.HEAP32 = new Int32Array(b); cache.HEAP32U = new Uint32Array(b);
if(target.bigIntEnabled){
cache.HEAP64 = new BigInt64Array(b); cache.HEAP64U = new BigUint64Array(b);
}
cache.HEAP32F = new Float32Array(b); cache.HEAP64F = new Float64Array(b);
cache.heapSize = b.byteLength;
return cache;
};
/** Convenience equivalent of this.heapForSize(8,false). */
target.heap8 = ()=>heapWrappers().HEAP8;
/** Convenience equivalent of this.heapForSize(8,true). */
target.heap8u = ()=>heapWrappers().HEAP8U;
/** Convenience equivalent of this.heapForSize(16,false). */
target.heap16 = ()=>heapWrappers().HEAP16;
/** Convenience equivalent of this.heapForSize(16,true). */
target.heap16u = ()=>heapWrappers().HEAP16U;
/** Convenience equivalent of this.heapForSize(32,false). */
target.heap32 = ()=>heapWrappers().HEAP32;
/** Convenience equivalent of this.heapForSize(32,true). */
target.heap32u = ()=>heapWrappers().HEAP32U;
/**
Requires n to be one of:
- integer 8, 16, or 32.
- A integer-type TypedArray constructor: Int8Array, Int16Array,
Int32Array, or their Uint counterparts.
If this.bigIntEnabled is true, it also accepts the value 64 or a
BigInt64Array/BigUint64Array, else it throws if passed 64 or one
of those constructors.
Returns an integer-based TypedArray view of the WASM heap
memory buffer associated with the given block size. If passed
an integer as the first argument and unsigned is truthy then
the "U" (unsigned) variant of that view is returned, else the
signed variant is returned. If passed a TypedArray value, the
2nd argument is ignored. Note that Float32Array and
Float64Array views are not supported by this function.
Note that growth of the heap will invalidate any references to
this heap, so do not hold a reference longer than needed and do
not use a reference after any operation which may
allocate. Instead, re-fetch the reference by calling this
function again.
Throws if passed an invalid n.
Pedantic side note: the name "heap" is a bit of a misnomer. In an
Emscripten environment, the memory managed via the stack
allocation API is in the same Memory object as the heap (which
makes sense because otherwise arbitrary pointer X would be
ambiguous: is it in the heap or the stack?).
*/
target.heapForSize = function(n,unsigned = false){
let ctor;
const c = (cache.memory && cache.heapSize === cache.memory.buffer.byteLength)
? cache : heapWrappers();
switch(n){
case Int8Array: return c.HEAP8; case Uint8Array: return c.HEAP8U;
case Int16Array: return c.HEAP16; case Uint16Array: return c.HEAP16U;
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wasm.pstack.restore(stack);
}
return ta;
}
capi.wasm.exports.sqlite3_randomness(...args);
};
let __wasmfsOpfsDir = undefined;
capi.sqlite3_wasmfs_opfs_dir = function(){
if(undefined !== __wasmfsOpfsDir) return __wasmfsOpfsDir;
const pdir = config.wasmfsOpfsDir;
if(!pdir
|| !self.FileSystemHandle
|| !self.FileSystemDirectoryHandle
|| !self.FileSystemFileHandle){
return __wasmfsOpfsDir = "";
}
try{
if(pdir && 0===wasm.xCallWrapped(
'sqlite3_wasm_init_wasmfs', 'i32', ['string'], pdir
)){
return __wasmfsOpfsDir = pdir;
}else{
return __wasmfsOpfsDir = "";
}
}catch(e){
return __wasmfsOpfsDir = "";
}
};
capi.sqlite3_wasmfs_filename_is_persistent = function(name){
const p = capi.sqlite3_wasmfs_opfs_dir();
return (p && name) ? name.startsWith(p+'/') : false;
};
if(false && 0===wasm.exports.sqlite3_vfs_find(0)){
wasm.exports.sqlite3_initialize();
}
capi.sqlite3_js_db_uses_vfs = function(pDb,vfsName,dbName="main"){
try{
const pK = capi.sqlite3_vfs_find(vfsName);
if(!pK) return false;
else if(!pDb){
return pK===capi.sqlite3_vfs_find(0) ? pK : false;
}else{
return pK===capi.sqlite3_js_db_vfs(pDb) ? pK : false;
}
}catch(e){
return false;
}
};
capi.sqlite3_js_vfs_list = function(){
const rc = [];
let pVfs = capi.sqlite3_vfs_find(0);
while(pVfs){
const oVfs = new capi.sqlite3_vfs(pVfs);
rc.push(wasm.cstringToJs(oVfs.$zName));
pVfs = oVfs.$pNext;
oVfs.dispose();
}
return rc;
};
capi.sqlite3_js_db_export = function(pDb){
if(!pDb) toss('Invalid sqlite3* argument.');
if(!wasm.bigIntEnabled) toss('BigInt64 support is not enabled.');
const stack = wasm.pstack.pointer;
let pOut;
try{
const pSize = wasm.pstack.alloc(8 + wasm.ptrSizeof);
const ppOut = pSize + 8;
let rc = wasm.exports.sqlite3_wasm_db_serialize(
pDb, ppOut, pSize, 0
);
if(rc){
toss("Database serialization failed with code",
sqlite3.capi.sqlite3_js_rc_str(rc));
}
pOut = wasm.getPtrValue(ppOut);
const nOut = wasm.getMemValue(pSize, 'i64');
rc = nOut
? wasm.heap8u().slice(pOut, pOut + Number(nOut))
: new Uint8Array();
return rc;
}finally{
if(pOut) wasm.exports.sqlite3_free(pOut);
wasm.pstack.restore(stack);
}
};
capi.sqlite3_js_db_vfs =
(dbPointer, dbName=0)=>wasm.sqlite3_wasm_db_vfs(dbPointer, dbName);
capi.sqlite3_js_aggregate_context = (pCtx, n)=>{
return capi.sqlite3_aggregate_context(pCtx, n)
|| (n ? WasmAllocError.toss("Cannot allocate",n,
"bytes for sqlite3_aggregate_context()")
: 0);
};
if( capi.util.isUIThread() ){
const __kvvfsInfo = function(which){
const rc = Object.create(null);
rc.prefix = 'kvvfs-'+which;
rc.stores = [];
if('session'===which || ''===which) rc.stores.push(self.sessionStorage);
if('local'===which || ''===which) rc.stores.push(self.localStorage);
return rc;
};
capi.sqlite3_js_kvvfs_clear = function(which=''){
let rc = 0;
const kvinfo = __kvvfsInfo(which);
kvinfo.stores.forEach((s)=>{
const toRm = [] ;
let i;
for( i = 0; i < s.length; ++i ){
const k = s.key(i);
if(k.startsWith(kvinfo.prefix)) toRm.push(k);
}
toRm.forEach((kk)=>s.removeItem(kk));
rc += toRm.length;
});
return rc;
};
capi.sqlite3_js_kvvfs_size = function(which=''){
let sz = 0;
const kvinfo = __kvvfsInfo(which);
kvinfo.stores.forEach((s)=>{
let i;
for(i = 0; i < s.length; ++i){
const k = s.key(i);
if(k.startsWith(kvinfo.prefix)){
sz += k.length;
sz += s.getItem(k).length;
}
}
});
return sz * 2 ;
};
}
const sqlite3 = {
WasmAllocError: WasmAllocError,
SQLite3Error: SQLite3Error,
capi,
config,
version: Object.create(null),
asyncPostInit: async function(){
let lip = sqlite3ApiBootstrap.initializersAsync;
delete sqlite3ApiBootstrap.initializersAsync;
if(!lip || !lip.length) return Promise.resolve(sqlite3);
lip = lip.map((f)=>{
const p = (f instanceof Promise) ? f : f(sqlite3);
return p.catch((e)=>{
console.error("an async sqlite3 initializer failed:",e);
throw e;
});
});
return Promise.all(lip).then(()=>sqlite3);
},
scriptInfo: undefined
};
try{
sqlite3ApiBootstrap.initializers.forEach((f)=>{
f(sqlite3);
});
}catch(e){
console.error("sqlite3 bootstrap initializer threw:",e);
throw e;
}
delete sqlite3ApiBootstrap.initializers;
sqlite3ApiBootstrap.sqlite3 = sqlite3;
return sqlite3;
};
self.sqlite3ApiBootstrap.initializers = [];
self.sqlite3ApiBootstrap.initializersAsync = [];
self.sqlite3ApiBootstrap.defaultConfig = Object.create(null);
self.sqlite3ApiBootstrap.sqlite3 = undefined;
self.WhWasmUtilInstaller = function(target){
'use strict';
if(undefined===target.bigIntEnabled){
target.bigIntEnabled = !!self['BigInt64Array'];
}
const toss = (...args)=>{throw new Error(args.join(' '))};
if(!target.exports){
Object.defineProperty(target, 'exports', {
enumerable: true, configurable: true,
get: ()=>(target.instance && target.instance.exports)
});
}
const ptrIR = target.pointerIR || 'i32';
const ptrSizeof = target.ptrSizeof =
('i32'===ptrIR ? 4
: ('i64'===ptrIR
? 8 : toss("Unhandled ptrSizeof:",ptrIR)));
const cache = Object.create(null);
cache.heapSize = 0;
cache.memory = null;
cache.freeFuncIndexes = [];
cache.scopedAlloc = [];
cache.utf8Decoder = new TextDecoder();
cache.utf8Encoder = new TextEncoder('utf-8');
const heapWrappers = function(){
if(!cache.memory){
cache.memory = (target.memory instanceof WebAssembly.Memory)
? target.memory : target.exports.memory;
}else if(cache.heapSize === cache.memory.buffer.byteLength){
return cache;
}
const b = cache.memory.buffer;
cache.HEAP8 = new Int8Array(b); cache.HEAP8U = new Uint8Array(b);
cache.HEAP16 = new Int16Array(b); cache.HEAP16U = new Uint16Array(b);
cache.HEAP32 = new Int32Array(b); cache.HEAP32U = new Uint32Array(b);
if(target.bigIntEnabled){
cache.HEAP64 = new BigInt64Array(b); cache.HEAP64U = new BigUint64Array(b);
}
cache.HEAP32F = new Float32Array(b); cache.HEAP64F = new Float64Array(b);
cache.heapSize = b.byteLength;
return cache;
};
target.heap8 = ()=>heapWrappers().HEAP8;
target.heap8u = ()=>heapWrappers().HEAP8U;
target.heap16 = ()=>heapWrappers().HEAP16;
target.heap16u = ()=>heapWrappers().HEAP16U;
target.heap32 = ()=>heapWrappers().HEAP32;
target.heap32u = ()=>heapWrappers().HEAP32U;
target.heapForSize = function(n,unsigned = false){
let ctor;
const c = (cache.memory && cache.heapSize === cache.memory.buffer.byteLength)
? cache : heapWrappers();
switch(n){
case Int8Array: return c.HEAP8; case Uint8Array: return c.HEAP8U;
case Int16Array: return c.HEAP16; case Uint16Array: return c.HEAP16U;
|
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|
break;
}
}
toss("Invalid heapForSize() size: expecting 8, 16, 32,",
"or (if BigInt is enabled) 64.");
};
/**
Returns the WASM-exported "indirect function table."
*/
target.functionTable = function(){
return target.exports.__indirect_function_table;
/** -----------------^^^^^ "seems" to be a standardized export name.
From Emscripten release notes from 2020-09-10:
- Use `__indirect_function_table` as the import name for the
table, which is what LLVM does.
*/
};
/**
Given a function pointer, returns the WASM function table entry
if found, else returns a falsy value.
*/
target.functionEntry = function(fptr){
const ft = target.functionTable();
return fptr < ft.length ? ft.get(fptr) : undefined;
};
/**
Creates a WASM function which wraps the given JS function and
returns the JS binding of that WASM function. The signature
string must be the Jaccwabyt-format or Emscripten
addFunction()-format function signature string. In short: in may
have one of the following formats:
- Emscripten: `"x..."`, where the first x is a letter representing
the result type and subsequent letters represent the argument
types. Functions with no arguments have only a single
letter. See below.
- Jaccwabyt: `"x(...)"` where `x` is the letter representing the
result type and letters in the parens (if any) represent the
argument types. Functions with no arguments use `x()`. See
below.
Supported letters:
- `i` = int32
- `p` = int32 ("pointer")
- `j` = int64
- `f` = float32
- `d` = float64
- `v` = void, only legal for use as the result type
It throws if an invalid signature letter is used.
Jaccwabyt-format signatures support some additional letters which
have no special meaning here but (in this context) act as aliases
for other letters:
- `s`, `P`: same as `p`
Sidebar: this code is developed together with Jaccwabyt, thus the
support for its signature format.
The arguments may be supplied in either order: (func,sig) or
(sig,func).
*/
target.jsFuncToWasm = function f(func, sig){
/** Attribution: adapted up from Emscripten-generated glue code,
refactored primarily for efficiency's sake, eliminating
call-local functions and superfluous temporary arrays. */
if(!f._){/*static init...*/
f._ = {
// Map of signature letters to type IR values
sigTypes: Object.assign(Object.create(null),{
i: 'i32', p: 'i32', P: 'i32', s: 'i32',
j: 'i64', f: 'f32', d: 'f64'
}),
// Map of type IR values to WASM type code values
typeCodes: Object.assign(Object.create(null),{
f64: 0x7c, f32: 0x7d, i64: 0x7e, i32: 0x7f
}),
/** Encodes n, which must be <2^14 (16384), into target array
tgt, as a little-endian value, using the given method
('push' or 'unshift'). */
uleb128Encode: function(tgt, method, n){
if(n<128) tgt[method](n);
else tgt[method]( (n % 128) | 128, n>>7);
},
/** Intentionally-lax pattern for Jaccwabyt-format function
pointer signatures, the intent of which is simply to
distinguish them from Emscripten-format signatures. The
downstream checks are less lax. */
rxJSig: /^(\w)\((\w*)\)$/,
/** Returns the parameter-value part of the given signature
string. */
sigParams: function(sig){
const m = f._.rxJSig.exec(sig);
return m ? m[2] : sig.substr(1);
},
/** Returns the IR value for the given letter or throws
if the letter is invalid. */
letterType: (x)=>f._.sigTypes[x] || toss("Invalid signature letter:",x),
/** Returns an object describing the result type and parameter
type(s) of the given function signature, or throws if the
signature is invalid. */
/******** // only valid for use with the WebAssembly.Function ctor, which
// is not yet documented on MDN.
sigToWasm: function(sig){
const rc = {parameters:[], results: []};
if('v'!==sig[0]) rc.results.push(f.sigTypes(sig[0]));
for(const x of f._.sigParams(sig)){
rc.parameters.push(f._.typeCodes(x));
}
return rc;
},************/
/** Pushes the WASM data type code for the given signature
letter to the given target array. Throws if letter is
invalid. */
pushSigType: (dest, letter)=>dest.push(f._.typeCodes[f._.letterType(letter)])
};
}/*static init*/
if('string'===typeof func){
const x = sig;
sig = func;
func = x;
}
const sigParams = f._.sigParams(sig);
const wasmCode = [0x01/*count: 1*/, 0x60/*function*/];
f._.uleb128Encode(wasmCode, 'push', sigParams.length);
for(const x of sigParams) f._.pushSigType(wasmCode, x);
if('v'===sig[0]) wasmCode.push(0);
else{
wasmCode.push(1);
f._.pushSigType(wasmCode, sig[0]);
}
f._.uleb128Encode(wasmCode, 'unshift', wasmCode.length)/* type section length */;
wasmCode.unshift(
0x00, 0x61, 0x73, 0x6d, /* magic: "\0asm" */
0x01, 0x00, 0x00, 0x00, /* version: 1 */
0x01 /* type section code */
);
wasmCode.push(
/* import section: */ 0x02, 0x07,
/* (import "e" "f" (func 0 (type 0))): */
0x01, 0x01, 0x65, 0x01, 0x66, 0x00, 0x00,
/* export section: */ 0x07, 0x05,
/* (export "f" (func 0 (type 0))): */
0x01, 0x01, 0x66, 0x00, 0x00
);
return (new WebAssembly.Instance(
new WebAssembly.Module(new Uint8Array(wasmCode)), {
e: { f: func }
})).exports['f'];
}/*jsFuncToWasm()*/;
/**
Expects a JS function and signature, exactly as for
this.jsFuncToWasm(). It uses that function to create a
WASM-exported function, installs that function to the next
available slot of this.functionTable(), and returns the
function's index in that table (which acts as a pointer to that
function). The returned pointer can be passed to
uninstallFunction() to uninstall it and free up the table slot for
reuse.
If passed (string,function) arguments then it treats the first
argument as the signature and second as the function.
As a special case, if the passed-in function is a WASM-exported
function then the signature argument is ignored and func is
installed as-is, without requiring re-compilation/re-wrapping.
This function will propagate an exception if
WebAssembly.Table.grow() throws or this.jsFuncToWasm() throws.
The former case can happen in an Emscripten-compiled
environment when building without Emscripten's
`-sALLOW_TABLE_GROWTH` flag.
Sidebar: this function differs from Emscripten's addFunction()
_primarily_ in that it does not share that function's
undocumented behavior of reusing a function if it's passed to
addFunction() more than once, which leads to uninstallFunction()
breaking clients which do not take care to avoid that case:
https://github.com/emscripten-core/emscripten/issues/17323
*/
target.installFunction = function f(func, sig){
if(2!==arguments.length){
toss("installFunction() requires exactly 2 arguments");
}
if('string'===typeof func){
const x = sig;
sig = func;
func = x;
}
const ft = target.functionTable();
const oldLen = ft.length;
let ptr;
while(cache.freeFuncIndexes.length){
ptr = cache.freeFuncIndexes.pop();
if(ft.get(ptr)){ /* Table was modified via a different API */
ptr = null;
continue;
}else{
break;
}
}
if(!ptr){
ptr = oldLen;
ft.grow(1);
}
try{
/*this will only work if func is a WASM-exported function*/
ft.set(ptr, func);
return ptr;
}catch(e){
if(!(e instanceof TypeError)){
if(ptr===oldLen) cache.freeFuncIndexes.push(oldLen);
throw e;
}
}
// It's not a WASM-exported function, so compile one...
try {
ft.set(ptr, target.jsFuncToWasm(func, sig));
}catch(e){
if(ptr===oldLen) cache.freeFuncIndexes.push(oldLen);
throw e;
}
return ptr;
};
/**
Requires a pointer value previously returned from
this.installFunction(). Removes that function from the WASM
function table, marks its table slot as free for re-use, and
returns that function. It is illegal to call this before
installFunction() has been called and results are undefined if
ptr was not returned by that function. The returned function
may be passed back to installFunction() to reinstall it.
*/
target.uninstallFunction = function(ptr){
const fi = cache.freeFuncIndexes;
const ft = target.functionTable();
fi.push(ptr);
const rc = ft.get(ptr);
ft.set(ptr, null);
return rc;
};
/**
Given a WASM heap memory address and a data type name in the form
(i8, i16, i32, i64, float (or f32), double (or f64)), this
fetches the numeric value from that address and returns it as a
number or, for the case of type='i64', a BigInt (noting that that
type triggers an exception if this.bigIntEnabled is
falsy). Throws if given an invalid type.
As a special case, if type ends with a `*`, it is considered to
be a pointer type and is treated as the WASM numeric type
appropriate for the pointer size (`i32`).
While likely not obvious, this routine and its setMemValue()
counterpart are how pointer-to-value _output_ parameters
in WASM-compiled C code can be interacted with:
```
const ptr = alloc(4);
setMemValue(ptr, 0, 'i32'); // clear the ptr's value
aCFuncWithOutputPtrToInt32Arg( ptr ); // e.g. void foo(int *x);
const result = getMemValue(ptr, 'i32'); // fetch ptr's value
dealloc(ptr);
```
scopedAlloc() and friends can be used to make handling of
`ptr` safe against leaks in the case of an exception:
```
let result;
const scope = scopedAllocPush();
try{
const ptr = scopedAlloc(4);
setMemValue(ptr, 0, 'i32');
aCFuncWithOutputPtrArg( ptr );
result = getMemValue(ptr, 'i32');
}finally{
scopedAllocPop(scope);
}
```
As a rule setMemValue() must be called to set (typically zero
out) the pointer's value, else it will contain an essentially
random value.
ACHTUNG: calling this often, e.g. in a loop, can have a noticably
painful impact on performance. Rather than doing so, use
heapForSize() to fetch the heap object and read directly from it.
See: setMemValue()
*/
target.getMemValue = function(ptr, type='i8'){
if(type.endsWith('*')) type = ptrIR;
const c = (cache.memory && cache.heapSize === cache.memory.buffer.byteLength)
? cache : heapWrappers();
switch(type){
case 'i1':
case 'i8': return c.HEAP8[ptr>>0];
case 'i16': return c.HEAP16[ptr>>1];
case 'i32': return c.HEAP32[ptr>>2];
case 'i64':
if(target.bigIntEnabled) return BigInt(c.HEAP64[ptr>>3]);
break;
case 'float': case 'f32': return c.HEAP32F[ptr>>2];
case 'double': case 'f64': return Number(c.HEAP64F[ptr>>3]);
default: break;
}
toss('Invalid type for getMemValue():',type);
};
/**
The counterpart of getMemValue(), this sets a numeric value at
the given WASM heap address, using the type to define how many
bytes are written. Throws if given an invalid type. See
getMemValue() for details about the type argument. If the 3rd
argument ends with `*` then it is treated as a pointer type and
this function behaves as if the 3rd argument were `i32`.
This function returns itself.
ACHTUNG: calling this often, e.g. in a loop, can have a noticably
painful impact on performance. Rather than doing so, use
heapForSize() to fetch the heap object and assign directly to it.
*/
target.setMemValue = function f(ptr, value, type='i8'){
if (type.endsWith('*')) type = ptrIR;
const c = (cache.memory && cache.heapSize === cache.memory.buffer.byteLength)
? cache : heapWrappers();
switch (type) {
case 'i1':
case 'i8': c.HEAP8[ptr>>0] = value; return f;
|
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5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
|
break;
}
}
toss("Invalid heapForSize() size: expecting 8, 16, 32,",
"or (if BigInt is enabled) 64.");
};
target.functionTable = function(){
return target.exports.__indirect_function_table;
};
target.functionEntry = function(fptr){
const ft = target.functionTable();
return fptr < ft.length ? ft.get(fptr) : undefined;
};
target.jsFuncToWasm = function f(func, sig){
if(!f._){
f._ = {
sigTypes: Object.assign(Object.create(null),{
i: 'i32', p: 'i32', P: 'i32', s: 'i32',
j: 'i64', f: 'f32', d: 'f64'
}),
typeCodes: Object.assign(Object.create(null),{
f64: 0x7c, f32: 0x7d, i64: 0x7e, i32: 0x7f
}),
uleb128Encode: function(tgt, method, n){
if(n<128) tgt[method](n);
else tgt[method]( (n % 128) | 128, n>>7);
},
rxJSig: /^(\w)\((\w*)\)$/,
sigParams: function(sig){
const m = f._.rxJSig.exec(sig);
return m ? m[2] : sig.substr(1);
},
letterType: (x)=>f._.sigTypes[x] || toss("Invalid signature letter:",x),
pushSigType: (dest, letter)=>dest.push(f._.typeCodes[f._.letterType(letter)])
};
}
if('string'===typeof func){
const x = sig;
sig = func;
func = x;
}
const sigParams = f._.sigParams(sig);
const wasmCode = [0x01, 0x60];
f._.uleb128Encode(wasmCode, 'push', sigParams.length);
for(const x of sigParams) f._.pushSigType(wasmCode, x);
if('v'===sig[0]) wasmCode.push(0);
else{
wasmCode.push(1);
f._.pushSigType(wasmCode, sig[0]);
}
f._.uleb128Encode(wasmCode, 'unshift', wasmCode.length);
wasmCode.unshift(
0x00, 0x61, 0x73, 0x6d,
0x01, 0x00, 0x00, 0x00,
0x01
);
wasmCode.push(
0x02, 0x07,
0x01, 0x01, 0x65, 0x01, 0x66, 0x00, 0x00,
0x07, 0x05,
0x01, 0x01, 0x66, 0x00, 0x00
);
return (new WebAssembly.Instance(
new WebAssembly.Module(new Uint8Array(wasmCode)), {
e: { f: func }
})).exports['f'];
};
target.installFunction = function f(func, sig){
if(2!==arguments.length){
toss("installFunction() requires exactly 2 arguments");
}
if('string'===typeof func){
const x = sig;
sig = func;
func = x;
}
const ft = target.functionTable();
const oldLen = ft.length;
let ptr;
while(cache.freeFuncIndexes.length){
ptr = cache.freeFuncIndexes.pop();
if(ft.get(ptr)){
ptr = null;
continue;
}else{
break;
}
}
if(!ptr){
ptr = oldLen;
ft.grow(1);
}
try{
ft.set(ptr, func);
return ptr;
}catch(e){
if(!(e instanceof TypeError)){
if(ptr===oldLen) cache.freeFuncIndexes.push(oldLen);
throw e;
}
}
try {
ft.set(ptr, target.jsFuncToWasm(func, sig));
}catch(e){
if(ptr===oldLen) cache.freeFuncIndexes.push(oldLen);
throw e;
}
return ptr;
};
target.uninstallFunction = function(ptr){
const fi = cache.freeFuncIndexes;
const ft = target.functionTable();
fi.push(ptr);
const rc = ft.get(ptr);
ft.set(ptr, null);
return rc;
};
target.getMemValue = function(ptr, type='i8'){
if(type.endsWith('*')) type = ptrIR;
const c = (cache.memory && cache.heapSize === cache.memory.buffer.byteLength)
? cache : heapWrappers();
switch(type){
case 'i1':
case 'i8': return c.HEAP8[ptr>>0];
case 'i16': return c.HEAP16[ptr>>1];
case 'i32': return c.HEAP32[ptr>>2];
case 'i64':
if(target.bigIntEnabled) return BigInt(c.HEAP64[ptr>>3]);
break;
case 'float': case 'f32': return c.HEAP32F[ptr>>2];
case 'double': case 'f64': return Number(c.HEAP64F[ptr>>3]);
default: break;
}
toss('Invalid type for getMemValue():',type);
};
target.setMemValue = function f(ptr, value, type='i8'){
if (type.endsWith('*')) type = ptrIR;
const c = (cache.memory && cache.heapSize === cache.memory.buffer.byteLength)
? cache : heapWrappers();
switch (type) {
case 'i1':
case 'i8': c.HEAP8[ptr>>0] = value; return f;
|
︙ | | | ︙ | |
6974
6975
6976
6977
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6990
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6995
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6998
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7004
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7042
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7047
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7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
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7064
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7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
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7094
7095
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7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
|
case 'float': case 'f32': c.HEAP32F[ptr>>2] = value; return f;
case 'double': case 'f64': c.HEAP64F[ptr>>3] = value; return f;
}
toss('Invalid type for setMemValue(): ' + type);
};
/** Convenience form of getMemValue() intended for fetching
pointer-to-pointer values. */
target.getPtrValue = (ptr)=>target.getMemValue(ptr, ptrIR);
/** Convenience form of setMemValue() intended for setting
pointer-to-pointer values. */
target.setPtrValue = (ptr, value)=>target.setMemValue(ptr, value, ptrIR);
/**
Returns true if the given value appears to be legal for use as
a WASM pointer value. Its _range_ of values is not (cannot be)
validated except to ensure that it is a 32-bit integer with a
value of 0 or greater. Likewise, it cannot verify whether the
value actually refers to allocated memory in the WASM heap.
*/
target.isPtr32 = (ptr)=>('number'===typeof ptr && (ptr===(ptr|0)) && ptr>=0);
/**
isPtr() is an alias for isPtr32(). If/when 64-bit WASM pointer
support becomes widespread, it will become an alias for either
isPtr32() or the as-yet-hypothetical isPtr64(), depending on a
configuration option.
*/
target.isPtr = target.isPtr32;
/**
Expects ptr to be a pointer into the WASM heap memory which
refers to a NUL-terminated C-style string encoded as UTF-8.
Returns the length, in bytes, of the string, as for `strlen(3)`.
As a special case, if !ptr then it it returns `null`. Throws if
ptr is out of range for target.heap8u().
*/
target.cstrlen = function(ptr){
if(!ptr) return null;
const h = heapWrappers().HEAP8U;
let pos = ptr;
for( ; h[pos] !== 0; ++pos ){}
return pos - ptr;
};
/** Internal helper to use in operations which need to distinguish
between SharedArrayBuffer heap memory and non-shared heap. */
const __SAB = ('undefined'===typeof SharedArrayBuffer)
? function(){} : SharedArrayBuffer;
const __utf8Decode = function(arrayBuffer, begin, end){
return cache.utf8Decoder.decode(
(arrayBuffer.buffer instanceof __SAB)
? arrayBuffer.slice(begin, end)
: arrayBuffer.subarray(begin, end)
);
};
/**
Expects ptr to be a pointer into the WASM heap memory which
refers to a NUL-terminated C-style string encoded as UTF-8. This
function counts its byte length using cstrlen() then returns a
JS-format string representing its contents. As a special case, if
ptr is falsy, `null` is returned.
*/
target.cstringToJs = function(ptr){
const n = target.cstrlen(ptr);
return n ? __utf8Decode(heapWrappers().HEAP8U, ptr, ptr+n) : (null===n ? n : "");
};
/**
Given a JS string, this function returns its UTF-8 length in
bytes. Returns null if str is not a string.
*/
target.jstrlen = function(str){
/** Attribution: derived from Emscripten's lengthBytesUTF8() */
if('string'!==typeof str) return null;
const n = str.length;
let len = 0;
for(let i = 0; i < n; ++i){
let u = str.charCodeAt(i);
if(u>=0xd800 && u<=0xdfff){
u = 0x10000 + ((u & 0x3FF) << 10) | (str.charCodeAt(++i) & 0x3FF);
}
if(u<=0x7f) ++len;
else if(u<=0x7ff) len += 2;
else if(u<=0xffff) len += 3;
else len += 4;
}
return len;
};
/**
Encodes the given JS string as UTF8 into the given TypedArray
tgt, starting at the given offset and writing, at most, maxBytes
bytes (including the NUL terminator if addNul is true, else no
NUL is added). If it writes any bytes at all and addNul is true,
it always NUL-terminates the output, even if doing so means that
the NUL byte is all that it writes.
If maxBytes is negative (the default) then it is treated as the
remaining length of tgt, starting at the given offset.
If writing the last character would surpass the maxBytes count
because the character is multi-byte, that character will not be
written (as opposed to writing a truncated multi-byte character).
This can lead to it writing as many as 3 fewer bytes than
maxBytes specifies.
Returns the number of bytes written to the target, _including_
the NUL terminator (if any). If it returns 0, it wrote nothing at
all, which can happen if:
- str is empty and addNul is false.
- offset < 0.
- maxBytes == 0.
- maxBytes is less than the byte length of a multi-byte str[0].
Throws if tgt is not an Int8Array or Uint8Array.
Design notes:
- In C's strcpy(), the destination pointer is the first
argument. That is not the case here primarily because the 3rd+
arguments are all referring to the destination, so it seems to
make sense to have them grouped with it.
- Emscripten's counterpart of this function (stringToUTF8Array())
returns the number of bytes written sans NUL terminator. That
is, however, ambiguous: str.length===0 or maxBytes===(0 or 1)
all cause 0 to be returned.
*/
target.jstrcpy = function(jstr, tgt, offset = 0, maxBytes = -1, addNul = true){
/** Attribution: the encoding bits are taken from Emscripten's
stringToUTF8Array(). */
if(!tgt || (!(tgt instanceof Int8Array) && !(tgt instanceof Uint8Array))){
toss("jstrcpy() target must be an Int8Array or Uint8Array.");
}
if(maxBytes<0) maxBytes = tgt.length - offset;
if(!(maxBytes>0) || !(offset>=0)) return 0;
let i = 0, max = jstr.length;
const begin = offset, end = offset + maxBytes - (addNul ? 1 : 0);
|
|
<
|
<
|
<
<
<
<
<
<
|
<
<
<
<
<
|
<
<
<
<
<
<
|
<
|
<
<
<
<
<
<
|
<
<
<
|
<
<
<
<
<
<
<
|
<
<
|
<
<
<
<
<
|
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
|
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
|
case 'float': case 'f32': c.HEAP32F[ptr>>2] = value; return f;
case 'double': case 'f64': c.HEAP64F[ptr>>3] = value; return f;
}
toss('Invalid type for setMemValue(): ' + type);
};
target.getPtrValue = (ptr)=>target.getMemValue(ptr, ptrIR);
target.setPtrValue = (ptr, value)=>target.setMemValue(ptr, value, ptrIR);
target.isPtr32 = (ptr)=>('number'===typeof ptr && (ptr===(ptr|0)) && ptr>=0);
target.isPtr = target.isPtr32;
target.cstrlen = function(ptr){
if(!ptr) return null;
const h = heapWrappers().HEAP8U;
let pos = ptr;
for( ; h[pos] !== 0; ++pos ){}
return pos - ptr;
};
const __SAB = ('undefined'===typeof SharedArrayBuffer)
? function(){} : SharedArrayBuffer;
const __utf8Decode = function(arrayBuffer, begin, end){
return cache.utf8Decoder.decode(
(arrayBuffer.buffer instanceof __SAB)
? arrayBuffer.slice(begin, end)
: arrayBuffer.subarray(begin, end)
);
};
target.cstringToJs = function(ptr){
const n = target.cstrlen(ptr);
return n ? __utf8Decode(heapWrappers().HEAP8U, ptr, ptr+n) : (null===n ? n : "");
};
target.jstrlen = function(str){
if('string'!==typeof str) return null;
const n = str.length;
let len = 0;
for(let i = 0; i < n; ++i){
let u = str.charCodeAt(i);
if(u>=0xd800 && u<=0xdfff){
u = 0x10000 + ((u & 0x3FF) << 10) | (str.charCodeAt(++i) & 0x3FF);
}
if(u<=0x7f) ++len;
else if(u<=0x7ff) len += 2;
else if(u<=0xffff) len += 3;
else len += 4;
}
return len;
};
target.jstrcpy = function(jstr, tgt, offset = 0, maxBytes = -1, addNul = true){
if(!tgt || (!(tgt instanceof Int8Array) && !(tgt instanceof Uint8Array))){
toss("jstrcpy() target must be an Int8Array or Uint8Array.");
}
if(maxBytes<0) maxBytes = tgt.length - offset;
if(!(maxBytes>0) || !(offset>=0)) return 0;
let i = 0, max = jstr.length;
const begin = offset, end = offset + maxBytes - (addNul ? 1 : 0);
|
︙ | | | ︙ | |
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
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7174
7175
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7181
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7210
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7221
7222
7223
7224
7225
7226
7227
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7230
7231
7232
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7743
7744
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|
tgt[offset++] = 0x80 | (u & 0x3f);
}
}
if(addNul) tgt[offset++] = 0;
return offset - begin;
};
/**
Works similarly to C's strncpy(), copying, at most, n bytes (not
characters) from srcPtr to tgtPtr. It copies until n bytes have
been copied or a 0 byte is reached in src. _Unlike_ strncpy(), it
returns the number of bytes it assigns in tgtPtr, _including_ the
NUL byte (if any). If n is reached before a NUL byte in srcPtr,
tgtPtr will _not_ be NULL-terminated. If a NUL byte is reached
before n bytes are copied, tgtPtr will be NUL-terminated.
If n is negative, cstrlen(srcPtr)+1 is used to calculate it, the
+1 being for the NUL byte.
Throws if tgtPtr or srcPtr are falsy. Results are undefined if:
- either is not a pointer into the WASM heap or
- srcPtr is not NUL-terminated AND n is less than srcPtr's
logical length.
ACHTUNG: it is possible to copy partial multi-byte characters
this way, and converting such strings back to JS strings will
have undefined results.
*/
target.cstrncpy = function(tgtPtr, srcPtr, n){
if(!tgtPtr || !srcPtr) toss("cstrncpy() does not accept NULL strings.");
if(n<0) n = target.cstrlen(strPtr)+1;
else if(!(n>0)) return 0;
const heap = target.heap8u();
let i = 0, ch;
for(; i < n && (ch = heap[srcPtr+i]); ++i){
heap[tgtPtr+i] = ch;
}
if(i<n) heap[tgtPtr + i++] = 0;
return i;
};
/**
For the given JS string, returns a Uint8Array of its contents
encoded as UTF-8. If addNul is true, the returned array will have
a trailing 0 entry, else it will not.
*/
target.jstrToUintArray = (str, addNul=false)=>{
return cache.utf8Encoder.encode(addNul ? (str+"\0") : str);
// Or the hard way...
/** Attribution: derived from Emscripten's stringToUTF8Array() */
//const a = [], max = str.length;
//let i = 0, pos = 0;
//for(; i < max; ++i){
// let u = str.charCodeAt(i);
// if(u>=0xd800 && u<=0xdfff){
// u = 0x10000 + ((u & 0x3FF) << 10) | (str.charCodeAt(++i) & 0x3FF);
// }
// if(u<=0x7f) a[pos++] = u;
// else if(u<=0x7ff){
// a[pos++] = 0xC0 | (u >> 6);
// a[pos++] = 0x80 | (u & 63);
// }else if(u<=0xffff){
// a[pos++] = 0xe0 | (u >> 12);
// a[pos++] = 0x80 | ((u >> 6) & 63);
// a[pos++] = 0x80 | (u & 63);
// }else{
// a[pos++] = 0xf0 | (u >> 18);
// a[pos++] = 0x80 | ((u >> 12) & 63);
// a[pos++] = 0x80 | ((u >> 6) & 63);
// a[pos++] = 0x80 | (u & 63);
// }
// }
// return new Uint8Array(a);
};
const __affirmAlloc = (obj,funcName)=>{
if(!(obj.alloc instanceof Function) ||
!(obj.dealloc instanceof Function)){
toss("Object is missing alloc() and/or dealloc() function(s)",
"required by",funcName+"().");
}
};
const __allocCStr = function(jstr, returnWithLength, allocator, funcName){
__affirmAlloc(target, funcName);
if('string'!==typeof jstr) return null;
const n = target.jstrlen(jstr),
ptr = allocator(n+1);
target.jstrcpy(jstr, target.heap8u(), ptr, n+1, true);
return returnWithLength ? [ptr, n] : ptr;
};
/**
Uses target.alloc() to allocate enough memory for jstrlen(jstr)+1
bytes of memory, copies jstr to that memory using jstrcpy(),
NUL-terminates it, and returns the pointer to that C-string.
Ownership of the pointer is transfered to the caller, who must
eventually pass the pointer to dealloc() to free it.
If passed a truthy 2nd argument then its return semantics change:
it returns [ptr,n], where ptr is the C-string's pointer and n is
its cstrlen().
Throws if `target.alloc` or `target.dealloc` are not functions.
*/
target.allocCString =
(jstr, returnWithLength=false)=>__allocCStr(jstr, returnWithLength,
target.alloc, 'allocCString()');
/**
Starts an "allocation scope." All allocations made using
scopedAlloc() are recorded in this scope and are freed when the
value returned from this function is passed to
scopedAllocPop().
This family of functions requires that the API's object have both
`alloc()` and `dealloc()` methods, else this function will throw.
Intended usage:
```
const scope = scopedAllocPush();
try {
const ptr1 = scopedAlloc(100);
const ptr2 = scopedAlloc(200);
const ptr3 = scopedAlloc(300);
...
// Note that only allocations made via scopedAlloc()
// are managed by this allocation scope.
}finally{
scopedAllocPop(scope);
}
```
The value returned by this function must be treated as opaque by
the caller, suitable _only_ for passing to scopedAllocPop().
Its type and value are not part of this function's API and may
change in any given version of this code.
`scopedAlloc.level` can be used to determine how many scoped
alloc levels are currently active.
*/
target.scopedAllocPush = function(){
__affirmAlloc(target, 'scopedAllocPush');
const a = [];
cache.scopedAlloc.push(a);
return a;
};
/**
Cleans up all allocations made using scopedAlloc() in the context
of the given opaque state object, which must be a value returned
by scopedAllocPush(). See that function for an example of how to
use this function.
Though scoped allocations are managed like a stack, this API
behaves properly if allocation scopes are popped in an order
other than the order they were pushed.
If called with no arguments, it pops the most recent
scopedAllocPush() result:
```
scopedAllocPush();
try{ ... } finally { scopedAllocPop(); }
```
It's generally recommended that it be passed an explicit argument
to help ensure that push/push are used in matching pairs, but in
trivial code that may be a non-issue.
*/
target.scopedAllocPop = function(state){
__affirmAlloc(target, 'scopedAllocPop');
const n = arguments.length
? cache.scopedAlloc.indexOf(state)
: cache.scopedAlloc.length-1;
if(n<0) toss("Invalid state object for scopedAllocPop().");
if(0===arguments.length) state = cache.scopedAlloc[n];
cache.scopedAlloc.splice(n,1);
for(let p; (p = state.pop()); ) target.dealloc(p);
};
/**
Allocates n bytes of memory using this.alloc() and records that
fact in the state for the most recent call of scopedAllocPush().
Ownership of the memory is given to scopedAllocPop(), which
will clean it up when it is called. The memory _must not_ be
passed to this.dealloc(). Throws if this API object is missing
the required `alloc()` or `dealloc()` functions or no scoped
alloc is active.
See scopedAllocPush() for an example of how to use this function.
The `level` property of this function can be queried to query how
many scoped allocation levels are currently active.
See also: scopedAllocPtr(), scopedAllocCString()
*/
target.scopedAlloc = function(n){
if(!cache.scopedAlloc.length){
toss("No scopedAllocPush() scope is active.");
}
const p = target.alloc(n);
cache.scopedAlloc[cache.scopedAlloc.length-1].push(p);
return p;
};
Object.defineProperty(target.scopedAlloc, 'level', {
configurable: false, enumerable: false,
get: ()=>cache.scopedAlloc.length,
set: ()=>toss("The 'active' property is read-only.")
});
/**
Works identically to allocCString() except that it allocates the
memory using scopedAlloc().
Will throw if no scopedAllocPush() call is active.
*/
target.scopedAllocCString =
(jstr, returnWithLength=false)=>__allocCStr(jstr, returnWithLength,
target.scopedAlloc, 'scopedAllocCString()');
// impl for allocMainArgv() and scopedAllocMainArgv().
const __allocMainArgv = function(isScoped, list){
if(!list.length) toss("Cannot allocate empty array.");
const pList = target[
isScoped ? 'scopedAlloc' : 'alloc'
](list.length * target.ptrSizeof);
let i = 0;
list.forEach((e)=>{
target.setPtrValue(pList + (target.ptrSizeof * i++),
target[
isScoped ? 'scopedAllocCString' : 'allocCString'
](""+e));
});
return pList;
};
/**
Creates an array, using scopedAlloc(), suitable for passing to a
C-level main() routine. The input is a collection with a length
property and a forEach() method. A block of memory list.length
entries long is allocated and each pointer-sized block of that
memory is populated with a scopedAllocCString() conversion of the
(''+value) of each element. Returns a pointer to the start of the
list, suitable for passing as the 2nd argument to a C-style
main() function.
Throws if list.length is falsy or scopedAllocPush() is not active.
*/
target.scopedAllocMainArgv = (list)=>__allocMainArgv(true, list);
/**
Identical to scopedAllocMainArgv() but uses alloc() instead of
scopedAllocMainArgv
*/
target.allocMainArgv = (list)=>__allocMainArgv(false, list);
/**
Wraps function call func() in a scopedAllocPush() and
scopedAllocPop() block, such that all calls to scopedAlloc() and
friends from within that call will have their memory freed
automatically when func() returns. If func throws or propagates
an exception, the scope is still popped, otherwise it returns the
result of calling func().
*/
target.scopedAllocCall = function(func){
target.scopedAllocPush();
try{ return func() } finally{ target.scopedAllocPop() }
};
/** Internal impl for allocPtr() and scopedAllocPtr(). */
const __allocPtr = function(howMany, safePtrSize, method){
__affirmAlloc(target, method);
const pIr = safePtrSize ? 'i64' : ptrIR;
let m = target[method](howMany * (safePtrSize ? 8 : ptrSizeof));
target.setMemValue(m, 0, pIr)
if(1===howMany){
return m;
}
const a = [m];
for(let i = 1; i < howMany; ++i){
m += (safePtrSize ? 8 : ptrSizeof);
a[i] = m;
target.setMemValue(m, 0, pIr);
}
return a;
};
/**
Allocates one or more pointers as a single chunk of memory and
zeroes them out.
The first argument is the number of pointers to allocate. The
second specifies whether they should use a "safe" pointer size (8
bytes) or whether they may use the default pointer size
(typically 4 but also possibly 8).
How the result is returned depends on its first argument: if
passed 1, it returns the allocated memory address. If passed more
than one then an array of pointer addresses is returned, which
can optionally be used with "destructuring assignment" like this:
```
const [p1, p2, p3] = allocPtr(3);
```
ACHTUNG: when freeing the memory, pass only the _first_ result
value to dealloc(). The others are part of the same memory chunk
and must not be freed separately.
The reason for the 2nd argument is..
When one of the returned pointers will refer to a 64-bit value,
e.g. a double or int64, an that value must be written or fetched,
e.g. using setMemValue() or getMemValue(), it is important that
the pointer in question be aligned to an 8-byte boundary or else
it will not be fetched or written properly and will corrupt or
read neighboring memory. It is only safe to pass false when the
client code is certain that it will only get/fetch 4-byte values
(or smaller).
*/
target.allocPtr =
(howMany=1, safePtrSize=true)=>__allocPtr(howMany, safePtrSize, 'alloc');
/**
Identical to allocPtr() except that it allocates using scopedAlloc()
instead of alloc().
*/
target.scopedAllocPtr =
(howMany=1, safePtrSize=true)=>__allocPtr(howMany, safePtrSize, 'scopedAlloc');
/**
If target.exports[name] exists, it is returned, else an
exception is thrown.
*/
target.xGet = function(name){
return target.exports[name] || toss("Cannot find exported symbol:",name);
};
const __argcMismatch =
(f,n)=>toss(f+"() requires",n,"argument(s).");
/**
Looks up a WASM-exported function named fname from
target.exports. If found, it is called, passed all remaining
arguments, and its return value is returned to xCall's caller. If
not found, an exception is thrown. This function does no
conversion of argument or return types, but see xWrap() and
xCallWrapped() for variants which do.
As a special case, if passed only 1 argument after the name and
that argument in an Array, that array's entries become the
function arguments. (This is not an ambiguous case because it's
not legal to pass an Array object to a WASM function.)
*/
target.xCall = function(fname, ...args){
const f = target.xGet(fname);
if(!(f instanceof Function)) toss("Exported symbol",fname,"is not a function.");
if(f.length!==args.length) __argcMismatch(fname,f.length)
/* This is arguably over-pedantic but we want to help clients keep
from shooting themselves in the foot when calling C APIs. */;
return (2===arguments.length && Array.isArray(arguments[1]))
? f.apply(null, arguments[1])
: f.apply(null, args);
};
/**
State for use with xWrap()
*/
cache.xWrap = Object.create(null);
const xcv = cache.xWrap.convert = Object.create(null);
/** Map of type names to argument conversion functions. */
cache.xWrap.convert.arg = Object.create(null);
/** Map of type names to return result conversion functions. */
cache.xWrap.convert.result = Object.create(null);
if(target.bigIntEnabled){
xcv.arg.i64 = (i)=>BigInt(i);
}
xcv.arg.i32 = (i)=>(i | 0);
xcv.arg.i16 = (i)=>((i | 0) & 0xFFFF);
xcv.arg.i8 = (i)=>((i | 0) & 0xFF);
xcv.arg.f32 = xcv.arg.float = (i)=>Number(i).valueOf();
xcv.arg.f64 = xcv.arg.double = xcv.arg.f32;
xcv.arg.int = xcv.arg.i32;
xcv.result['*'] = xcv.result['pointer'] = xcv.arg['**'] = xcv.arg[ptrIR];
xcv.result['number'] = (v)=>Number(v);
{ /* Copy certain xcv.arg[...] handlers to xcv.result[...] and
add pointer-style variants of them. */
const copyToResult = ['i8', 'i16', 'i32', 'int',
'f32', 'float', 'f64', 'double'];
if(target.bigIntEnabled) copyToResult.push('i64');
for(const t of copyToResult){
xcv.arg[t+'*'] = xcv.result[t+'*'] = xcv.arg[ptrIR];
xcv.result[t] = xcv.arg[t] || toss("Missing arg converter:",t);
}
}
/**
In order for args of type string to work in various contexts in
the sqlite3 API, we need to pass them on as, variably, a C-string
or a pointer value. Thus for ARGs of type 'string' and
'*'/'pointer' we behave differently depending on whether the
argument is a string or not:
- If v is a string, scopeAlloc() a new C-string from it and return
that temp string's pointer.
- Else return the value from the arg adaptor defined for ptrIR.
TODO? Permit an Int8Array/Uint8Array and convert it to a string?
Would that be too much magic concentrated in one place, ready to
backfire?
*/
xcv.arg.string = xcv.arg.utf8 = xcv.arg['pointer'] = xcv.arg['*']
= function(v){
if('string'===typeof v) return target.scopedAllocCString(v);
return v ? xcv.arg[ptrIR](v) : null;
};
xcv.result.string = xcv.result.utf8 = (i)=>target.cstringToJs(i);
xcv.result['string:free'] = xcv.result['utf8:free'] = (i)=>{
try { return i ? target.cstringToJs(i) : null }
finally{ target.dealloc(i) }
};
xcv.result.json = (i)=>JSON.parse(target.cstringToJs(i));
xcv.result['json:free'] = (i)=>{
try{ return i ? JSON.parse(target.cstringToJs(i)) : null }
finally{ target.dealloc(i) }
}
xcv.result['void'] = (v)=>undefined;
xcv.result['null'] = (v)=>v;
if(0){
/***
This idea can't currently work because we don't know the
signature for the func and don't have a way for the user to
convey it. To do this we likely need to be able to match
arg/result handlers by a regex, but that would incur an O(N)
cost as we check the regex one at a time. Another use case for
such a thing would be pseudotypes like "int:-1" to say that
the value will always be treated like -1 (which has a useful
case in the sqlite3 bindings).
*/
xcv.arg['func-ptr'] = function(v){
if(!(v instanceof Function)) return xcv.arg[ptrIR];
const f = target.jsFuncToWasm(v, WHAT_SIGNATURE);
};
}
const __xArgAdapterCheck =
(t)=>xcv.arg[t] || toss("Argument adapter not found:",t);
const __xResultAdapterCheck =
(t)=>xcv.result[t] || toss("Result adapter not found:",t);
cache.xWrap.convertArg = (t,v)=>__xArgAdapterCheck(t)(v);
cache.xWrap.convertResult =
(t,v)=>(null===t ? v : (t ? __xResultAdapterCheck(t)(v) : undefined));
/**
Creates a wrapper for the WASM-exported function fname. Uses
xGet() to fetch the exported function (which throws on
error) and returns either that function or a wrapper for that
function which converts the JS-side argument types into WASM-side
types and converts the result type. If the function takes no
arguments and resultType is `null` then the function is returned
as-is, else a wrapper is created for it to adapt its arguments
and result value, as described below.
(If you're familiar with Emscripten's ccall() and cwrap(), this
function is essentially cwrap() on steroids.)
This function's arguments are:
- fname: the exported function's name. xGet() is used to fetch
this, so will throw if no exported function is found with that
name.
- resultType: the name of the result type. A literal `null` means
to return the original function's value as-is (mnemonic: there
is "null" conversion going on). Literal `undefined` or the
string `"void"` mean to ignore the function's result and return
`undefined`. Aside from those two special cases, it may be one
of the values described below or any mapping installed by the
client using xWrap.resultAdapter().
If passed 3 arguments and the final one is an array, that array
must contain a list of type names (see below) for adapting the
arguments from JS to WASM. If passed 2 arguments, more than 3,
or the 3rd is not an array, all arguments after the 2nd (if any)
are treated as type names. i.e.:
```
xWrap('funcname', 'i32', 'string', 'f64');
// is equivalent to:
xWrap('funcname', 'i32', ['string', 'f64']);
```
Type names are symbolic names which map the arguments to an
adapter function to convert, if needed, the value before passing
it on to WASM or to convert a return result from WASM. The list
of built-in names:
- `i8`, `i16`, `i32` (args and results): all integer conversions
which convert their argument to an integer and truncate it to
the given bit length.
- `N*` (args): a type name in the form `N*`, where N is a numeric
type name, is treated the same as WASM pointer.
- `*` and `pointer` (args): have multple semantics. They
behave exactly as described below for `string` args.
- `*` and `pointer` (results): are aliases for the current
WASM pointer numeric type.
- `**` (args): is simply a descriptive alias for the WASM pointer
type. It's primarily intended to mark output-pointer arguments.
- `i64` (args and results): passes the value to BigInt() to
convert it to an int64. Only available if bigIntEnabled is
true.
- `f32` (`float`), `f64` (`double`) (args and results): pass
their argument to Number(). i.e. the adaptor does not currently
distinguish between the two types of floating-point numbers.
- `number` (results): converts the result to a JS Number using
Number(theValue).valueOf(). Note that this is for result
conversions only, as it's not possible to generically know
which type of number to convert arguments to.
Non-numeric conversions include:
- `string` or `utf8` (args): has two different semantics in order
to accommodate various uses of certain C APIs
(e.g. output-style strings)...
- If the arg is a string, it creates a _temporary_
UTF-8-encoded C-string to pass to the exported function,
cleaning it up before the wrapper returns. If a long-lived
C-string pointer is required, that requires client-side code
to create the string, then pass its pointer to the function.
- Else the arg is assumed to be a pointer to a string the
client has already allocated and it's passed on as
a WASM pointer.
- `string` or `utf8` (results): treats the result value as a
const C-string, encoded as UTF-8, copies it to a JS string,
and returns that JS string.
- `string:free` or `utf8:free) (results): treats the result value
as a non-const UTF-8 C-string, ownership of which has just been
transfered to the caller. It copies the C-string to a JS
string, frees the C-string, and returns the JS string. If such
a result value is NULL, the JS result is `null`. Achtung: when
using an API which returns results from a specific allocator,
e.g. `my_malloc()`, this conversion _is not legal_. Instead, an
equivalent conversion which uses the appropriate deallocator is
required. For example:
```js
target.xWrap.resultAdaptor('string:my_free',(i)=>{
try { return i ? target.cstringToJs(i) : null }
finally{ target.exports.my_free(i) }
};
```
- `json` (results): treats the result as a const C-string and
returns the result of passing the converted-to-JS string to
JSON.parse(). Returns `null` if the C-string is a NULL pointer.
- `json:free` (results): works exactly like `string:free` but
returns the same thing as the `json` adapter. Note the
warning in `string:free` regarding maching allocators and
deallocators.
The type names for results and arguments are validated when
xWrap() is called and any unknown names will trigger an
exception.
Clients may map their own result and argument adapters using
xWrap.resultAdapter() and xWrap.argAdaptor(), noting that not all
type conversions are valid for both arguments _and_ result types
as they often have different memory ownership requirements.
TODOs:
- Figure out how/whether we can (semi-)transparently handle
pointer-type _output_ arguments. Those currently require
explicit handling by allocating pointers, assigning them before
the call using setMemValue(), and fetching them with
getMemValue() after the call. We may be able to automate some
or all of that.
- Figure out whether it makes sense to extend the arg adapter
interface such that each arg adapter gets an array containing
the results of the previous arguments in the current call. That
might allow some interesting type-conversion feature. Use case:
handling of the final argument to sqlite3_prepare_v2() depends
on the type (pointer vs JS string) of its 2nd
argument. Currently that distinction requires hand-writing a
wrapper for that function. That case is unusual enough that
abstracting it into this API (and taking on the associated
costs) may well not make good sense.
*/
target.xWrap = function(fname, resultType, ...argTypes){
if(3===arguments.length && Array.isArray(arguments[2])){
argTypes = arguments[2];
}
const xf = target.xGet(fname);
if(argTypes.length!==xf.length) __argcMismatch(fname, xf.length);
if((null===resultType) && 0===xf.length){
/* Func taking no args with an as-is return. We don't need a wrapper. */
return xf;
}
/*Verify the arg type conversions are valid...*/;
if(undefined!==resultType && null!==resultType) __xResultAdapterCheck(resultType);
argTypes.forEach(__xArgAdapterCheck);
if(0===xf.length){
// No args to convert, so we can create a simpler wrapper...
return (...args)=>(args.length
? __argcMismatch(fname, xf.length)
: cache.xWrap.convertResult(resultType, xf.call(null)));
}
return function(...args){
if(args.length!==xf.length) __argcMismatch(fname, xf.length);
const scope = target.scopedAllocPush();
try{
const rc = xf.apply(null,args.map((v,i)=>cache.xWrap.convertArg(argTypes[i], v)));
return cache.xWrap.convertResult(resultType, rc);
}finally{
target.scopedAllocPop(scope);
}
};
}/*xWrap()*/;
/** Internal impl for xWrap.resultAdapter() and argAdaptor(). */
const __xAdapter = function(func, argc, typeName, adapter, modeName, xcvPart){
if('string'===typeof typeName){
if(1===argc) return xcvPart[typeName];
else if(2===argc){
if(!adapter){
delete xcvPart[typeName];
return func;
}else if(!(adapter instanceof Function)){
toss(modeName,"requires a function argument.");
}
xcvPart[typeName] = adapter;
return func;
}
}
toss("Invalid arguments to",modeName);
};
/**
Gets, sets, or removes a result value adapter for use with
xWrap(). If passed only 1 argument, the adapter function for the
given type name is returned. If the second argument is explicit
falsy (as opposed to defaulted), the adapter named by the first
argument is removed. If the 2nd argument is not falsy, it must be
a function which takes one value and returns a value appropriate
for the given type name. The adapter may throw if its argument is
not of a type it can work with. This function throws for invalid
arguments.
Example:
```
xWrap.resultAdapter('twice',(v)=>v+v);
```
xWrap.resultAdapter() MUST NOT use the scopedAlloc() family of
APIs to allocate a result value. xWrap()-generated wrappers run
in the context of scopedAllocPush() so that argument adapters can
easily convert, e.g., to C-strings, and have them cleaned up
automatically before the wrapper returns to the caller. Likewise,
if a _result_ adapter uses scoped allocation, the result will be
freed before because they would be freed before the wrapper
returns, leading to chaos and undefined behavior.
Except when called as a getter, this function returns itself.
*/
target.xWrap.resultAdapter = function f(typeName, adapter){
return __xAdapter(f, arguments.length, typeName, adapter,
'resultAdaptor()', xcv.result);
};
/**
Functions identically to xWrap.resultAdapter() but applies to
call argument conversions instead of result value conversions.
xWrap()-generated wrappers perform argument conversion in the
context of a scopedAllocPush(), so any memory allocation
performed by argument adapters really, really, really should be
made using the scopedAlloc() family of functions unless
specifically necessary. For example:
```
xWrap.argAdapter('my-string', function(v){
return ('string'===typeof v)
? myWasmObj.scopedAllocCString(v) : null;
};
```
Contrariwise, xWrap.resultAdapter() must _not_ use scopedAlloc()
to allocate its results because they would be freed before the
xWrap()-created wrapper returns.
Note that it is perfectly legitimate to use these adapters to
perform argument validation, as opposed (or in addition) to
conversion.
*/
target.xWrap.argAdapter = function f(typeName, adapter){
return __xAdapter(f, arguments.length, typeName, adapter,
'argAdaptor()', xcv.arg);
};
/**
Functions like xCall() but performs argument and result type
conversions as for xWrap(). The first argument is the name of the
exported function to call. The 2nd its the name of its result
type, as documented for xWrap(). The 3rd is an array of argument
type name, as documented for xWrap() (use a falsy value or an
empty array for nullary functions). The 4th+ arguments are
arguments for the call, with the special case that if the 4th
argument is an array, it is used as the arguments for the
call. Returns the converted result of the call.
This is just a thin wrapper around xWrap(). If the given function
is to be called more than once, it's more efficient to use
xWrap() to create a wrapper, then to call that wrapper as many
times as needed. For one-shot calls, however, this variant is
arguably more efficient because it will hypothetically free the
wrapper function quickly.
*/
target.xCallWrapped = function(fname, resultType, argTypes, ...args){
if(Array.isArray(arguments[3])) args = arguments[3];
return target.xWrap(fname, resultType, argTypes||[]).apply(null, args||[]);
};
return target;
};
/**
yawl (Yet Another Wasm Loader) provides very basic wasm loader.
It requires a config object:
- `uri`: required URI of the WASM file to load.
- `onload(loadResult,config)`: optional callback. The first
argument is the result object from
WebAssembly.instantiate[Streaming](). The 2nd is the config
object passed to this function. Described in more detail below.
- `imports`: optional imports object for
WebAssembly.instantiate[Streaming](). The default is an empty set
of imports. If the module requires any imports, this object
must include them.
- `wasmUtilTarget`: optional object suitable for passing to
WhWasmUtilInstaller(). If set, it gets passed to that function
after the promise resolves. This function sets several properties
on it before passing it on to that function (which sets many
more):
- `module`, `instance`: the properties from the
instantiate[Streaming]() result.
- If `instance.exports.memory` is _not_ set then it requires that
`config.imports.env.memory` be set (else it throws), and
assigns that to `target.memory`.
- If `wasmUtilTarget.alloc` is not set and
`instance.exports.malloc` is, it installs
`wasmUtilTarget.alloc()` and `wasmUtilTarget.dealloc()`
wrappers for the exports `malloc` and `free` functions.
It returns a function which, when called, initiates loading of the
module and returns a Promise. When that Promise resolves, it calls
the `config.onload` callback (if set) and passes it
`(loadResult,config)`, where `loadResult` is the result of
WebAssembly.instantiate[Streaming](): an object in the form:
```
{
module: a WebAssembly.Module,
instance: a WebAssembly.Instance
}
```
(Note that the initial `then()` attached to the promise gets only
that object, and not the `config` one.)
Error handling is up to the caller, who may attach a `catch()` call
to the promise.
*/
self.WhWasmUtilInstaller.yawl = function(config){
const wfetch = ()=>fetch(config.uri, {credentials: 'same-origin'});
const wui = this;
const finalThen = function(arg){
//log("finalThen()",arg);
if(config.wasmUtilTarget){
const toss = (...args)=>{throw new Error(args.join(' '))};
const tgt = config.wasmUtilTarget;
tgt.module = arg.module;
tgt.instance = arg.instance;
//tgt.exports = tgt.instance.exports;
if(!tgt.instance.exports.memory){
/**
WhWasmUtilInstaller requires either tgt.exports.memory
(exported from WASM) or tgt.memory (JS-provided memory
imported into WASM).
*/
tgt.memory = (config.imports && config.imports.env
&& config.imports.env.memory)
|| toss("Missing 'memory' object!");
}
if(!tgt.alloc && arg.instance.exports.malloc){
const exports = arg.instance.exports;
tgt.alloc = function(n){
return exports.malloc(n) || toss("Allocation of",n,"bytes failed.");
};
tgt.dealloc = function(m){exports.free(m)};
}
wui(tgt);
}
if(config.onload) config.onload(arg,config);
return arg /* for any then() handler attached to
yetAnotherWasmLoader()'s return value */;
};
const loadWasm = WebAssembly.instantiateStreaming
? function loadWasmStreaming(){
return WebAssembly.instantiateStreaming(wfetch(), config.imports||{})
.then(finalThen);
}
: function loadWasmOldSchool(){ // Safari < v15
return wfetch()
.then(response => response.arrayBuffer())
.then(bytes => WebAssembly.instantiate(bytes, config.imports||{}))
.then(finalThen);
};
return loadWasm;
}.bind(self.WhWasmUtilInstaller)/*yawl()*/;
/* END FILE: common/whwasmutil.js */
/* BEGIN FILE: jaccwabyt/jaccwabyt.js */
/**
2022-06-30
The author disclaims copyright to this source code. In place of a
legal notice, here is a blessing:
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
***********************************************************************
The Jaccwabyt API is documented in detail in an external file.
Project home: https://fossil.wanderinghorse.net/r/jaccwabyt
*/
'use strict';
self.Jaccwabyt = function StructBinderFactory(config){
/* ^^^^ it is recommended that clients move that object into wherever
they'd like to have it and delete the self-held copy ("self" being
the global window or worker object). This API does not require the
global reference - it is simply installed as a convenience for
connecting these bits to other co-developed code before it gets
removed from the global namespace.
*/
/** Throws a new Error, the message of which is the concatenation
all args with a space between each. */
const toss = (...args)=>{throw new Error(args.join(' '))};
/**
Implementing function bindings revealed significant
shortcomings in Emscripten's addFunction()/removeFunction()
interfaces:
https://github.com/emscripten-core/emscripten/issues/17323
Until those are resolved, or a suitable replacement can be
implemented, our function-binding API will be more limited
and/or clumsier to use than initially hoped.
*/
if(!(config.heap instanceof WebAssembly.Memory)
&& !(config.heap instanceof Function)){
toss("config.heap must be WebAssembly.Memory instance or a function.");
}
['alloc','dealloc'].forEach(function(k){
(config[k] instanceof Function) ||
toss("Config option '"+k+"' must be a function.");
});
const SBF = StructBinderFactory;
const heap = (config.heap instanceof Function)
? config.heap : (()=>new Uint8Array(config.heap.buffer)),
alloc = config.alloc,
dealloc = config.dealloc,
log = config.log || console.log.bind(console),
memberPrefix = (config.memberPrefix || ""),
memberSuffix = (config.memberSuffix || ""),
bigIntEnabled = (undefined===config.bigIntEnabled
? !!self['BigInt64Array'] : !!config.bigIntEnabled),
BigInt = self['BigInt'],
BigInt64Array = self['BigInt64Array'],
/* Undocumented (on purpose) config options: */
functionTable = config.functionTable/*EXPERIMENTAL, undocumented*/,
ptrSizeof = config.ptrSizeof || 4,
ptrIR = config.ptrIR || 'i32'
;
if(!SBF.debugFlags){
SBF.__makeDebugFlags = function(deriveFrom=null){
/* This is disgustingly overengineered. :/ */
if(deriveFrom && deriveFrom.__flags) deriveFrom = deriveFrom.__flags;
const f = function f(flags){
if(0===arguments.length){
return f.__flags;
}
if(flags<0){
delete f.__flags.getter; delete f.__flags.setter;
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tgt[offset++] = 0x80 | (u & 0x3f);
}
}
if(addNul) tgt[offset++] = 0;
return offset - begin;
};
target.cstrncpy = function(tgtPtr, srcPtr, n){
if(!tgtPtr || !srcPtr) toss("cstrncpy() does not accept NULL strings.");
if(n<0) n = target.cstrlen(strPtr)+1;
else if(!(n>0)) return 0;
const heap = target.heap8u();
let i = 0, ch;
for(; i < n && (ch = heap[srcPtr+i]); ++i){
heap[tgtPtr+i] = ch;
}
if(i<n) heap[tgtPtr + i++] = 0;
return i;
};
target.jstrToUintArray = (str, addNul=false)=>{
return cache.utf8Encoder.encode(addNul ? (str+"\0") : str);
};
const __affirmAlloc = (obj,funcName)=>{
if(!(obj.alloc instanceof Function) ||
!(obj.dealloc instanceof Function)){
toss("Object is missing alloc() and/or dealloc() function(s)",
"required by",funcName+"().");
}
};
const __allocCStr = function(jstr, returnWithLength, allocator, funcName){
__affirmAlloc(target, funcName);
if('string'!==typeof jstr) return null;
const n = target.jstrlen(jstr),
ptr = allocator(n+1);
target.jstrcpy(jstr, target.heap8u(), ptr, n+1, true);
return returnWithLength ? [ptr, n] : ptr;
};
target.allocCString =
(jstr, returnWithLength=false)=>__allocCStr(jstr, returnWithLength,
target.alloc, 'allocCString()');
target.scopedAllocPush = function(){
__affirmAlloc(target, 'scopedAllocPush');
const a = [];
cache.scopedAlloc.push(a);
return a;
};
target.scopedAllocPop = function(state){
__affirmAlloc(target, 'scopedAllocPop');
const n = arguments.length
? cache.scopedAlloc.indexOf(state)
: cache.scopedAlloc.length-1;
if(n<0) toss("Invalid state object for scopedAllocPop().");
if(0===arguments.length) state = cache.scopedAlloc[n];
cache.scopedAlloc.splice(n,1);
for(let p; (p = state.pop()); ) target.dealloc(p);
};
target.scopedAlloc = function(n){
if(!cache.scopedAlloc.length){
toss("No scopedAllocPush() scope is active.");
}
const p = target.alloc(n);
cache.scopedAlloc[cache.scopedAlloc.length-1].push(p);
return p;
};
Object.defineProperty(target.scopedAlloc, 'level', {
configurable: false, enumerable: false,
get: ()=>cache.scopedAlloc.length,
set: ()=>toss("The 'active' property is read-only.")
});
target.scopedAllocCString =
(jstr, returnWithLength=false)=>__allocCStr(jstr, returnWithLength,
target.scopedAlloc, 'scopedAllocCString()');
const __allocMainArgv = function(isScoped, list){
if(!list.length) toss("Cannot allocate empty array.");
const pList = target[
isScoped ? 'scopedAlloc' : 'alloc'
](list.length * target.ptrSizeof);
let i = 0;
list.forEach((e)=>{
target.setPtrValue(pList + (target.ptrSizeof * i++),
target[
isScoped ? 'scopedAllocCString' : 'allocCString'
](""+e));
});
return pList;
};
target.scopedAllocMainArgv = (list)=>__allocMainArgv(true, list);
target.allocMainArgv = (list)=>__allocMainArgv(false, list);
target.scopedAllocCall = function(func){
target.scopedAllocPush();
try{ return func() } finally{ target.scopedAllocPop() }
};
const __allocPtr = function(howMany, safePtrSize, method){
__affirmAlloc(target, method);
const pIr = safePtrSize ? 'i64' : ptrIR;
let m = target[method](howMany * (safePtrSize ? 8 : ptrSizeof));
target.setMemValue(m, 0, pIr)
if(1===howMany){
return m;
}
const a = [m];
for(let i = 1; i < howMany; ++i){
m += (safePtrSize ? 8 : ptrSizeof);
a[i] = m;
target.setMemValue(m, 0, pIr);
}
return a;
};
target.allocPtr =
(howMany=1, safePtrSize=true)=>__allocPtr(howMany, safePtrSize, 'alloc');
target.scopedAllocPtr =
(howMany=1, safePtrSize=true)=>__allocPtr(howMany, safePtrSize, 'scopedAlloc');
target.xGet = function(name){
return target.exports[name] || toss("Cannot find exported symbol:",name);
};
const __argcMismatch =
(f,n)=>toss(f+"() requires",n,"argument(s).");
target.xCall = function(fname, ...args){
const f = target.xGet(fname);
if(!(f instanceof Function)) toss("Exported symbol",fname,"is not a function.");
if(f.length!==args.length) __argcMismatch(fname,f.length)
;
return (2===arguments.length && Array.isArray(arguments[1]))
? f.apply(null, arguments[1])
: f.apply(null, args);
};
cache.xWrap = Object.create(null);
const xcv = cache.xWrap.convert = Object.create(null);
cache.xWrap.convert.arg = Object.create(null);
cache.xWrap.convert.result = Object.create(null);
if(target.bigIntEnabled){
xcv.arg.i64 = (i)=>BigInt(i);
}
xcv.arg.i32 = (i)=>(i | 0);
xcv.arg.i16 = (i)=>((i | 0) & 0xFFFF);
xcv.arg.i8 = (i)=>((i | 0) & 0xFF);
xcv.arg.f32 = xcv.arg.float = (i)=>Number(i).valueOf();
xcv.arg.f64 = xcv.arg.double = xcv.arg.f32;
xcv.arg.int = xcv.arg.i32;
xcv.result['*'] = xcv.result['pointer'] = xcv.arg['**'] = xcv.arg[ptrIR];
xcv.result['number'] = (v)=>Number(v);
{
const copyToResult = ['i8', 'i16', 'i32', 'int',
'f32', 'float', 'f64', 'double'];
if(target.bigIntEnabled) copyToResult.push('i64');
for(const t of copyToResult){
xcv.arg[t+'*'] = xcv.result[t+'*'] = xcv.arg[ptrIR];
xcv.result[t] = xcv.arg[t] || toss("Missing arg converter:",t);
}
}
xcv.arg.string = xcv.arg.utf8 = xcv.arg['pointer'] = xcv.arg['*']
= function(v){
if('string'===typeof v) return target.scopedAllocCString(v);
return v ? xcv.arg[ptrIR](v) : null;
};
xcv.result.string = xcv.result.utf8 = (i)=>target.cstringToJs(i);
xcv.result['string:free'] = xcv.result['utf8:free'] = (i)=>{
try { return i ? target.cstringToJs(i) : null }
finally{ target.dealloc(i) }
};
xcv.result.json = (i)=>JSON.parse(target.cstringToJs(i));
xcv.result['json:free'] = (i)=>{
try{ return i ? JSON.parse(target.cstringToJs(i)) : null }
finally{ target.dealloc(i) }
}
xcv.result['void'] = (v)=>undefined;
xcv.result['null'] = (v)=>v;
if(0){
xcv.arg['func-ptr'] = function(v){
if(!(v instanceof Function)) return xcv.arg[ptrIR];
const f = target.jsFuncToWasm(v, WHAT_SIGNATURE);
};
}
const __xArgAdapterCheck =
(t)=>xcv.arg[t] || toss("Argument adapter not found:",t);
const __xResultAdapterCheck =
(t)=>xcv.result[t] || toss("Result adapter not found:",t);
cache.xWrap.convertArg = (t,v)=>__xArgAdapterCheck(t)(v);
cache.xWrap.convertResult =
(t,v)=>(null===t ? v : (t ? __xResultAdapterCheck(t)(v) : undefined));
target.xWrap = function(fname, resultType, ...argTypes){
if(3===arguments.length && Array.isArray(arguments[2])){
argTypes = arguments[2];
}
const xf = target.xGet(fname);
if(argTypes.length!==xf.length) __argcMismatch(fname, xf.length);
if((null===resultType) && 0===xf.length){
return xf;
}
;
if(undefined!==resultType && null!==resultType) __xResultAdapterCheck(resultType);
argTypes.forEach(__xArgAdapterCheck);
if(0===xf.length){
return (...args)=>(args.length
? __argcMismatch(fname, xf.length)
: cache.xWrap.convertResult(resultType, xf.call(null)));
}
return function(...args){
if(args.length!==xf.length) __argcMismatch(fname, xf.length);
const scope = target.scopedAllocPush();
try{
const rc = xf.apply(null,args.map((v,i)=>cache.xWrap.convertArg(argTypes[i], v)));
return cache.xWrap.convertResult(resultType, rc);
}finally{
target.scopedAllocPop(scope);
}
};
};
const __xAdapter = function(func, argc, typeName, adapter, modeName, xcvPart){
if('string'===typeof typeName){
if(1===argc) return xcvPart[typeName];
else if(2===argc){
if(!adapter){
delete xcvPart[typeName];
return func;
}else if(!(adapter instanceof Function)){
toss(modeName,"requires a function argument.");
}
xcvPart[typeName] = adapter;
return func;
}
}
toss("Invalid arguments to",modeName);
};
target.xWrap.resultAdapter = function f(typeName, adapter){
return __xAdapter(f, arguments.length, typeName, adapter,
'resultAdaptor()', xcv.result);
};
target.xWrap.argAdapter = function f(typeName, adapter){
return __xAdapter(f, arguments.length, typeName, adapter,
'argAdaptor()', xcv.arg);
};
target.xCallWrapped = function(fname, resultType, argTypes, ...args){
if(Array.isArray(arguments[3])) args = arguments[3];
return target.xWrap(fname, resultType, argTypes||[]).apply(null, args||[]);
};
return target;
};
self.WhWasmUtilInstaller.yawl = function(config){
const wfetch = ()=>fetch(config.uri, {credentials: 'same-origin'});
const wui = this;
const finalThen = function(arg){
if(config.wasmUtilTarget){
const toss = (...args)=>{throw new Error(args.join(' '))};
const tgt = config.wasmUtilTarget;
tgt.module = arg.module;
tgt.instance = arg.instance;
if(!tgt.instance.exports.memory){
tgt.memory = (config.imports && config.imports.env
&& config.imports.env.memory)
|| toss("Missing 'memory' object!");
}
if(!tgt.alloc && arg.instance.exports.malloc){
const exports = arg.instance.exports;
tgt.alloc = function(n){
return exports.malloc(n) || toss("Allocation of",n,"bytes failed.");
};
tgt.dealloc = function(m){exports.free(m)};
}
wui(tgt);
}
if(config.onload) config.onload(arg,config);
return arg ;
};
const loadWasm = WebAssembly.instantiateStreaming
? function loadWasmStreaming(){
return WebAssembly.instantiateStreaming(wfetch(), config.imports||{})
.then(finalThen);
}
: function loadWasmOldSchool(){
return wfetch()
.then(response => response.arrayBuffer())
.then(bytes => WebAssembly.instantiate(bytes, config.imports||{}))
.then(finalThen);
};
return loadWasm;
}.bind(self.WhWasmUtilInstaller);
'use strict';
self.Jaccwabyt = function StructBinderFactory(config){
const toss = (...args)=>{throw new Error(args.join(' '))};
if(!(config.heap instanceof WebAssembly.Memory)
&& !(config.heap instanceof Function)){
toss("config.heap must be WebAssembly.Memory instance or a function.");
}
['alloc','dealloc'].forEach(function(k){
(config[k] instanceof Function) ||
toss("Config option '"+k+"' must be a function.");
});
const SBF = StructBinderFactory;
const heap = (config.heap instanceof Function)
? config.heap : (()=>new Uint8Array(config.heap.buffer)),
alloc = config.alloc,
dealloc = config.dealloc,
log = config.log || console.log.bind(console),
memberPrefix = (config.memberPrefix || ""),
memberSuffix = (config.memberSuffix || ""),
bigIntEnabled = (undefined===config.bigIntEnabled
? !!self['BigInt64Array'] : !!config.bigIntEnabled),
BigInt = self['BigInt'],
BigInt64Array = self['BigInt64Array'],
functionTable = config.functionTable,
ptrSizeof = config.ptrSizeof || 4,
ptrIR = config.ptrIR || 'i32'
;
if(!SBF.debugFlags){
SBF.__makeDebugFlags = function(deriveFrom=null){
if(deriveFrom && deriveFrom.__flags) deriveFrom = deriveFrom.__flags;
const f = function f(flags){
if(0===arguments.length){
return f.__flags;
}
if(flags<0){
delete f.__flags.getter; delete f.__flags.setter;
|
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|
iterable: false, writable: false,
value: Object.create(deriveFrom)
});
if(!deriveFrom) f(0);
return f;
};
SBF.debugFlags = SBF.__makeDebugFlags();
}/*static init*/
const isLittleEndian = (function() {
const buffer = new ArrayBuffer(2);
new DataView(buffer).setInt16(0, 256, true /* littleEndian */);
// Int16Array uses the platform's endianness.
return new Int16Array(buffer)[0] === 256;
})();
/**
Some terms used in the internal docs:
StructType: a struct-wrapping class generated by this
framework.
DEF: struct description object.
SIG: struct member signature string.
*/
/** True if SIG s looks like a function signature, else
false. */
const isFuncSig = (s)=>'('===s[1];
/** True if SIG s is-a pointer signature. */
const isPtrSig = (s)=>'p'===s || 'P'===s;
const isAutoPtrSig = (s)=>'P'===s /*EXPERIMENTAL*/;
const sigLetter = (s)=>isFuncSig(s) ? 'p' : s[0];
/** Returns the WASM IR form of the Emscripten-conventional letter
at SIG s[0]. Throws for an unknown SIG. */
const sigIR = function(s){
switch(sigLetter(s)){
case 'i': return 'i32';
case 'p': case 'P': case 's': return ptrIR;
case 'j': return 'i64';
case 'f': return 'float';
case 'd': return 'double';
}
toss("Unhandled signature IR:",s);
};
/** Returns the sizeof value for the given SIG. Throws for an
unknown SIG. */
const sigSizeof = function(s){
switch(sigLetter(s)){
case 'i': return 4;
case 'p': case 'P': case 's': return ptrSizeof;
case 'j': return 8;
case 'f': return 4 /* C-side floats, not JS-side */;
case 'd': return 8;
}
toss("Unhandled signature sizeof:",s);
};
const affirmBigIntArray = BigInt64Array
? ()=>true : ()=>toss('BigInt64Array is not available.');
/** Returns the (signed) TypedArray associated with the type
described by the given SIG. Throws for an unknown SIG. */
/**********
const sigTypedArray = function(s){
switch(sigIR(s)) {
case 'i32': return Int32Array;
case 'i64': return affirmBigIntArray() && BigInt64Array;
case 'float': return Float32Array;
case 'double': return Float64Array;
}
toss("Unhandled signature TypedArray:",s);
};
**************/
/** Returns the name of a DataView getter method corresponding
to the given SIG. */
const sigDVGetter = function(s){
switch(sigLetter(s)) {
case 'p': case 'P': case 's': {
switch(ptrSizeof){
case 4: return 'getInt32';
case 8: return affirmBigIntArray() && 'getBigInt64';
}
break;
}
case 'i': return 'getInt32';
case 'j': return affirmBigIntArray() && 'getBigInt64';
case 'f': return 'getFloat32';
case 'd': return 'getFloat64';
}
toss("Unhandled DataView getter for signature:",s);
};
/** Returns the name of a DataView setter method corresponding
to the given SIG. */
const sigDVSetter = function(s){
switch(sigLetter(s)){
case 'p': case 'P': case 's': {
switch(ptrSizeof){
case 4: return 'setInt32';
case 8: return affirmBigIntArray() && 'setBigInt64';
}
break;
}
case 'i': return 'setInt32';
case 'j': return affirmBigIntArray() && 'setBigInt64';
case 'f': return 'setFloat32';
case 'd': return 'setFloat64';
}
toss("Unhandled DataView setter for signature:",s);
};
/**
Returns either Number of BigInt, depending on the given
SIG. This constructor is used in property setters to coerce
the being-set value to the correct size.
*/
const sigDVSetWrapper = function(s){
switch(sigLetter(s)) {
case 'i': case 'f': case 'd': return Number;
case 'j': return affirmBigIntArray() && BigInt;
case 'p': case 'P': case 's':
switch(ptrSizeof){
case 4: return Number;
case 8: return affirmBigIntArray() && BigInt;
}
break;
}
toss("Unhandled DataView set wrapper for signature:",s);
};
const sPropName = (s,k)=>s+'::'+k;
const __propThrowOnSet = function(structName,propName){
return ()=>toss(sPropName(structName,propName),"is read-only.");
};
/**
When C code passes a pointer of a bound struct to back into
a JS function via a function pointer struct member, it
arrives in JS as a number (pointer).
StructType.instanceForPointer(ptr) can be used to get the
instance associated with that pointer, and __ptrBacklinks
holds that mapping. WeakMap keys must be objects, so we
cannot use a weak map to map pointers to instances. We use
the StructType constructor as the WeakMap key, mapped to a
plain, prototype-less Object which maps the pointers to
struct instances. That arrangement gives us a
per-StructType type-safe way to resolve pointers.
*/
const __ptrBacklinks = new WeakMap();
/**
Similar to __ptrBacklinks but is scoped at the StructBinder
level and holds pointer-to-object mappings for all struct
instances created by any struct from any StructFactory
which this specific StructBinder has created. The intention
of this is to help implement more transparent handling of
pointer-type property resolution.
*/
const __ptrBacklinksGlobal = Object.create(null);
/**
In order to completely hide StructBinder-bound struct
pointers from JS code, we store them in a scope-local
WeakMap which maps the struct-bound objects to their WASM
pointers. The pointers are accessible via
boundObject.pointer, which is gated behind an accessor
function, but are not exposed anywhere else in the
object. The main intention of that is to make it impossible
for stale copies to be made.
*/
const __instancePointerMap = new WeakMap();
/** Property name for the pointer-is-external marker. */
const xPtrPropName = '(pointer-is-external)';
/** Frees the obj.pointer memory and clears the pointer
property. */
const __freeStruct = function(ctor, obj, m){
if(!m) m = __instancePointerMap.get(obj);
if(m) {
if(obj.ondispose instanceof Function){
try{obj.ondispose()}
catch(e){
/*do not rethrow: destructors must not throw*/
console.warn("ondispose() for",ctor.structName,'@',
m,'threw. NOT propagating it.',e);
}
}else if(Array.isArray(obj.ondispose)){
obj.ondispose.forEach(function(x){
try{
if(x instanceof Function) x.call(obj);
else if('number' === typeof x) dealloc(x);
// else ignore. Strings are permitted to annotate entries
// to assist in debugging.
}catch(e){
console.warn("ondispose() for",ctor.structName,'@',
m,'threw. NOT propagating it.',e);
}
});
}
delete obj.ondispose;
delete __ptrBacklinks.get(ctor)[m];
delete __ptrBacklinksGlobal[m];
__instancePointerMap.delete(obj);
if(ctor.debugFlags.__flags.dealloc){
log("debug.dealloc:",(obj[xPtrPropName]?"EXTERNAL":""),
ctor.structName,"instance:",
ctor.structInfo.sizeof,"bytes @"+m);
}
if(!obj[xPtrPropName]) dealloc(m);
}
};
/** Returns a skeleton for a read-only property accessor wrapping
value v. */
const rop = (v)=>{return {configurable: false, writable: false,
iterable: false, value: v}};
/** Allocates obj's memory buffer based on the size defined in
DEF.sizeof. */
const __allocStruct = function(ctor, obj, m){
let fill = !m;
if(m) Object.defineProperty(obj, xPtrPropName, rop(m));
else{
m = alloc(ctor.structInfo.sizeof);
if(!m) toss("Allocation of",ctor.structName,"structure failed.");
}
|
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|
iterable: false, writable: false,
value: Object.create(deriveFrom)
});
if(!deriveFrom) f(0);
return f;
};
SBF.debugFlags = SBF.__makeDebugFlags();
}
const isLittleEndian = (function() {
const buffer = new ArrayBuffer(2);
new DataView(buffer).setInt16(0, 256, true );
return new Int16Array(buffer)[0] === 256;
})();
const isFuncSig = (s)=>'('===s[1];
const isPtrSig = (s)=>'p'===s || 'P'===s;
const isAutoPtrSig = (s)=>'P'===s ;
const sigLetter = (s)=>isFuncSig(s) ? 'p' : s[0];
const sigIR = function(s){
switch(sigLetter(s)){
case 'i': return 'i32';
case 'p': case 'P': case 's': return ptrIR;
case 'j': return 'i64';
case 'f': return 'float';
case 'd': return 'double';
}
toss("Unhandled signature IR:",s);
};
const sigSizeof = function(s){
switch(sigLetter(s)){
case 'i': return 4;
case 'p': case 'P': case 's': return ptrSizeof;
case 'j': return 8;
case 'f': return 4 ;
case 'd': return 8;
}
toss("Unhandled signature sizeof:",s);
};
const affirmBigIntArray = BigInt64Array
? ()=>true : ()=>toss('BigInt64Array is not available.');
const sigDVGetter = function(s){
switch(sigLetter(s)) {
case 'p': case 'P': case 's': {
switch(ptrSizeof){
case 4: return 'getInt32';
case 8: return affirmBigIntArray() && 'getBigInt64';
}
break;
}
case 'i': return 'getInt32';
case 'j': return affirmBigIntArray() && 'getBigInt64';
case 'f': return 'getFloat32';
case 'd': return 'getFloat64';
}
toss("Unhandled DataView getter for signature:",s);
};
const sigDVSetter = function(s){
switch(sigLetter(s)){
case 'p': case 'P': case 's': {
switch(ptrSizeof){
case 4: return 'setInt32';
case 8: return affirmBigIntArray() && 'setBigInt64';
}
break;
}
case 'i': return 'setInt32';
case 'j': return affirmBigIntArray() && 'setBigInt64';
case 'f': return 'setFloat32';
case 'd': return 'setFloat64';
}
toss("Unhandled DataView setter for signature:",s);
};
const sigDVSetWrapper = function(s){
switch(sigLetter(s)) {
case 'i': case 'f': case 'd': return Number;
case 'j': return affirmBigIntArray() && BigInt;
case 'p': case 'P': case 's':
switch(ptrSizeof){
case 4: return Number;
case 8: return affirmBigIntArray() && BigInt;
}
break;
}
toss("Unhandled DataView set wrapper for signature:",s);
};
const sPropName = (s,k)=>s+'::'+k;
const __propThrowOnSet = function(structName,propName){
return ()=>toss(sPropName(structName,propName),"is read-only.");
};
const __ptrBacklinks = new WeakMap();
const __ptrBacklinksGlobal = Object.create(null);
const __instancePointerMap = new WeakMap();
const xPtrPropName = '(pointer-is-external)';
const __freeStruct = function(ctor, obj, m){
if(!m) m = __instancePointerMap.get(obj);
if(m) {
if(obj.ondispose instanceof Function){
try{obj.ondispose()}
catch(e){
console.warn("ondispose() for",ctor.structName,'@',
m,'threw. NOT propagating it.',e);
}
}else if(Array.isArray(obj.ondispose)){
obj.ondispose.forEach(function(x){
try{
if(x instanceof Function) x.call(obj);
else if('number' === typeof x) dealloc(x);
}catch(e){
console.warn("ondispose() for",ctor.structName,'@',
m,'threw. NOT propagating it.',e);
}
});
}
delete obj.ondispose;
delete __ptrBacklinks.get(ctor)[m];
delete __ptrBacklinksGlobal[m];
__instancePointerMap.delete(obj);
if(ctor.debugFlags.__flags.dealloc){
log("debug.dealloc:",(obj[xPtrPropName]?"EXTERNAL":""),
ctor.structName,"instance:",
ctor.structInfo.sizeof,"bytes @"+m);
}
if(!obj[xPtrPropName]) dealloc(m);
}
};
const rop = (v)=>{return {configurable: false, writable: false,
iterable: false, value: v}};
const __allocStruct = function(ctor, obj, m){
let fill = !m;
if(m) Object.defineProperty(obj, xPtrPropName, rop(m));
else{
m = alloc(ctor.structInfo.sizeof);
if(!m) toss("Allocation of",ctor.structName,"structure failed.");
}
|
︙ | | | ︙ | |
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
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8507
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8509
8510
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8512
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8514
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8516
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8521
|
__ptrBacklinks.get(ctor)[m] = obj;
__ptrBacklinksGlobal[m] = obj;
}catch(e){
__freeStruct(ctor, obj, m);
throw e;
}
};
/** Gets installed as the memoryDump() method of all structs. */
const __memoryDump = function(){
const p = this.pointer;
return p
? new Uint8Array(heap().slice(p, p+this.structInfo.sizeof))
: null;
};
const __memberKey = (k)=>memberPrefix + k + memberSuffix;
const __memberKeyProp = rop(__memberKey);
/**
Looks up a struct member in structInfo.members. Throws if found
if tossIfNotFound is true, else returns undefined if not
found. The given name may be either the name of the
structInfo.members key (faster) or the key as modified by the
memberPrefix/memberSuffix settings.
*/
const __lookupMember = function(structInfo, memberName, tossIfNotFound=true){
let m = structInfo.members[memberName];
if(!m && (memberPrefix || memberSuffix)){
// Check for a match on members[X].key
for(const v of Object.values(structInfo.members)){
if(v.key===memberName){ m = v; break; }
}
if(!m && tossIfNotFound){
toss(sPropName(structInfo.name,memberName),'is not a mapped struct member.');
}
}
return m;
};
/**
Uses __lookupMember(obj.structInfo,memberName) to find a member,
throwing if not found. Returns its signature, either in this
framework's native format or in Emscripten format.
*/
const __memberSignature = function f(obj,memberName,emscriptenFormat=false){
if(!f._) f._ = (x)=>x.replace(/[^vipPsjrd]/g,'').replace(/[pPs]/g,'i');
const m = __lookupMember(obj.structInfo, memberName, true);
return emscriptenFormat ? f._(m.signature) : m.signature;
};
/**
Returns the instanceForPointer() impl for the given
StructType constructor.
*/
const __instanceBacklinkFactory = function(ctor){
const b = Object.create(null);
__ptrBacklinks.set(ctor, b);
return (ptr)=>b[ptr];
};
const __ptrPropDescriptor = {
configurable: false, enumerable: false,
get: function(){return __instancePointerMap.get(this)},
set: ()=>toss("Cannot assign the 'pointer' property of a struct.")
// Reminder: leaving `set` undefined makes assignments
// to the property _silently_ do nothing. Current unit tests
// rely on it throwing, though.
};
/** Impl of X.memberKeys() for StructType and struct ctors. */
const __structMemberKeys = rop(function(){
const a = [];
Object.keys(this.structInfo.members).forEach((k)=>a.push(this.memberKey(k)));
return a;
});
const __utf8Decoder = new TextDecoder('utf-8');
const __utf8Encoder = new TextEncoder();
/** Internal helper to use in operations which need to distinguish
between SharedArrayBuffer heap memory and non-shared heap. */
const __SAB = ('undefined'===typeof SharedArrayBuffer)
? function(){} : SharedArrayBuffer;
const __utf8Decode = function(arrayBuffer, begin, end){
return __utf8Decoder.decode(
(arrayBuffer.buffer instanceof __SAB)
? arrayBuffer.slice(begin, end)
: arrayBuffer.subarray(begin, end)
);
};
/**
Uses __lookupMember() to find the given obj.structInfo key.
Returns that member if it is a string, else returns false. If the
member is not found, throws if tossIfNotFound is true, else
returns false.
*/
const __memberIsString = function(obj,memberName, tossIfNotFound=false){
const m = __lookupMember(obj.structInfo, memberName, tossIfNotFound);
return (m && 1===m.signature.length && 's'===m.signature[0]) ? m : false;
};
/**
Given a member description object, throws if member.signature is
not valid for assigning to or interpretation as a C-style string.
It optimistically assumes that any signature of (i,p,s) is
C-string compatible.
*/
const __affirmCStringSignature = function(member){
if('s'===member.signature) return;
toss("Invalid member type signature for C-string value:",
JSON.stringify(member));
};
/**
Looks up the given member in obj.structInfo. If it has a
signature of 's' then it is assumed to be a C-style UTF-8 string
and a decoded copy of the string at its address is returned. If
the signature is of any other type, it throws. If an s-type
member's address is 0, `null` is returned.
*/
const __memberToJsString = function f(obj,memberName){
const m = __lookupMember(obj.structInfo, memberName, true);
__affirmCStringSignature(m);
const addr = obj[m.key];
//log("addr =",addr,memberName,"m =",m);
if(!addr) return null;
let pos = addr;
const mem = heap();
for( ; mem[pos]!==0; ++pos ) {
//log("mem[",pos,"]",mem[pos]);
};
//log("addr =",addr,"pos =",pos);
return (addr===pos) ? "" : __utf8Decode(mem, addr, pos);
};
/**
Adds value v to obj.ondispose, creating ondispose,
or converting it to an array, if needed.
*/
const __addOnDispose = function(obj, v){
if(obj.ondispose){
if(obj.ondispose instanceof Function){
obj.ondispose = [obj.ondispose];
}/*else assume it's an array*/
}else{
obj.ondispose = [];
}
obj.ondispose.push(v);
};
/**
Allocates a new UTF-8-encoded, NUL-terminated copy of the given
JS string and returns its address relative to heap(). If
allocation returns 0 this function throws. Ownership of the
memory is transfered to the caller, who must eventually pass it
to the configured dealloc() function.
*/
const __allocCString = function(str){
const u = __utf8Encoder.encode(str);
const mem = alloc(u.length+1);
if(!mem) toss("Allocation error while duplicating string:",str);
const h = heap();
let i = 0;
for( ; i < u.length; ++i ) h[mem + i] = u[i];
h[mem + u.length] = 0;
//log("allocCString @",mem," =",u);
return mem;
};
/**
Sets the given struct member of obj to a dynamically-allocated,
UTF-8-encoded, NUL-terminated copy of str. It is up to the caller
to free any prior memory, if appropriate. The newly-allocated
string is added to obj.ondispose so will be freed when the object
is disposed.
*/
const __setMemberCString = function(obj, memberName, str){
const m = __lookupMember(obj.structInfo, memberName, true);
__affirmCStringSignature(m);
/* Potential TODO: if obj.ondispose contains obj[m.key] then
dealloc that value and clear that ondispose entry */
const mem = __allocCString(str);
obj[m.key] = mem;
__addOnDispose(obj, mem);
return obj;
};
/**
Prototype for all StructFactory instances (the constructors
returned from StructBinder).
*/
const StructType = function ctor(structName, structInfo){
if(arguments[2]!==rop){
toss("Do not call the StructType constructor",
"from client-level code.");
}
Object.defineProperties(this,{
//isA: rop((v)=>v instanceof ctor),
structName: rop(structName),
structInfo: rop(structInfo)
});
};
/**
Properties inherited by struct-type-specific StructType instances
and (indirectly) concrete struct-type instances.
*/
StructType.prototype = Object.create(null, {
dispose: rop(function(){__freeStruct(this.constructor, this)}),
lookupMember: rop(function(memberName, tossIfNotFound=true){
return __lookupMember(this.structInfo, memberName, tossIfNotFound);
}),
memberToJsString: rop(function(memberName){
return __memberToJsString(this, memberName);
|
|
|
<
<
<
<
<
<
|
|
<
<
<
<
|
<
<
<
|
|
|
|
|
<
|
<
<
<
<
<
|
<
<
<
<
<
|
<
<
<
<
<
<
|
|
|
|
<
<
<
<
>
|
<
<
<
<
<
<
|
|
<
<
<
<
<
<
|
<
|
<
<
<
|
|
<
<
<
|
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
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6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
|
__ptrBacklinks.get(ctor)[m] = obj;
__ptrBacklinksGlobal[m] = obj;
}catch(e){
__freeStruct(ctor, obj, m);
throw e;
}
};
const __memoryDump = function(){
const p = this.pointer;
return p
? new Uint8Array(heap().slice(p, p+this.structInfo.sizeof))
: null;
};
const __memberKey = (k)=>memberPrefix + k + memberSuffix;
const __memberKeyProp = rop(__memberKey);
const __lookupMember = function(structInfo, memberName, tossIfNotFound=true){
let m = structInfo.members[memberName];
if(!m && (memberPrefix || memberSuffix)){
for(const v of Object.values(structInfo.members)){
if(v.key===memberName){ m = v; break; }
}
if(!m && tossIfNotFound){
toss(sPropName(structInfo.name,memberName),'is not a mapped struct member.');
}
}
return m;
};
const __memberSignature = function f(obj,memberName,emscriptenFormat=false){
if(!f._) f._ = (x)=>x.replace(/[^vipPsjrd]/g,'').replace(/[pPs]/g,'i');
const m = __lookupMember(obj.structInfo, memberName, true);
return emscriptenFormat ? f._(m.signature) : m.signature;
};
const __instanceBacklinkFactory = function(ctor){
const b = Object.create(null);
__ptrBacklinks.set(ctor, b);
return (ptr)=>b[ptr];
};
const __ptrPropDescriptor = {
configurable: false, enumerable: false,
get: function(){return __instancePointerMap.get(this)},
set: ()=>toss("Cannot assign the 'pointer' property of a struct.")
};
const __structMemberKeys = rop(function(){
const a = [];
Object.keys(this.structInfo.members).forEach((k)=>a.push(this.memberKey(k)));
return a;
});
const __utf8Decoder = new TextDecoder('utf-8');
const __utf8Encoder = new TextEncoder();
const __SAB = ('undefined'===typeof SharedArrayBuffer)
? function(){} : SharedArrayBuffer;
const __utf8Decode = function(arrayBuffer, begin, end){
return __utf8Decoder.decode(
(arrayBuffer.buffer instanceof __SAB)
? arrayBuffer.slice(begin, end)
: arrayBuffer.subarray(begin, end)
);
};
const __memberIsString = function(obj,memberName, tossIfNotFound=false){
const m = __lookupMember(obj.structInfo, memberName, tossIfNotFound);
return (m && 1===m.signature.length && 's'===m.signature[0]) ? m : false;
};
const __affirmCStringSignature = function(member){
if('s'===member.signature) return;
toss("Invalid member type signature for C-string value:",
JSON.stringify(member));
};
const __memberToJsString = function f(obj,memberName){
const m = __lookupMember(obj.structInfo, memberName, true);
__affirmCStringSignature(m);
const addr = obj[m.key];
if(!addr) return null;
let pos = addr;
const mem = heap();
for( ; mem[pos]!==0; ++pos ) {
};
return (addr===pos) ? "" : __utf8Decode(mem, addr, pos);
};
const __addOnDispose = function(obj, v){
if(obj.ondispose){
if(obj.ondispose instanceof Function){
obj.ondispose = [obj.ondispose];
}
}else{
obj.ondispose = [];
}
obj.ondispose.push(v);
};
const __allocCString = function(str){
const u = __utf8Encoder.encode(str);
const mem = alloc(u.length+1);
if(!mem) toss("Allocation error while duplicating string:",str);
const h = heap();
let i = 0;
for( ; i < u.length; ++i ) h[mem + i] = u[i];
h[mem + u.length] = 0;
return mem;
};
const __setMemberCString = function(obj, memberName, str){
const m = __lookupMember(obj.structInfo, memberName, true);
__affirmCStringSignature(m);
const mem = __allocCString(str);
obj[m.key] = mem;
__addOnDispose(obj, mem);
return obj;
};
const StructType = function ctor(structName, structInfo){
if(arguments[2]!==rop){
toss("Do not call the StructType constructor",
"from client-level code.");
}
Object.defineProperties(this,{
structName: rop(structName),
structInfo: rop(structInfo)
});
};
StructType.prototype = Object.create(null, {
dispose: rop(function(){__freeStruct(this.constructor, this)}),
lookupMember: rop(function(memberName, tossIfNotFound=true){
return __lookupMember(this.structInfo, memberName, tossIfNotFound);
}),
memberToJsString: rop(function(memberName){
return __memberToJsString(this, memberName);
|
︙ | | | ︙ | |
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
|
memoryDump: rop(__memoryDump),
pointer: __ptrPropDescriptor,
setMemberCString: rop(function(memberName, str){
return __setMemberCString(this, memberName, str);
})
});
/**
"Static" properties for StructType.
*/
Object.defineProperties(StructType, {
allocCString: rop(__allocCString),
instanceForPointer: rop((ptr)=>__ptrBacklinksGlobal[ptr]),
isA: rop((v)=>v instanceof StructType),
hasExternalPointer: rop((v)=>(v instanceof StructType) && !!v[xPtrPropName]),
memberKey: __memberKeyProp
});
const isNumericValue = (v)=>Number.isFinite(v) || (v instanceof (BigInt || Number));
/**
Pass this a StructBinder-generated prototype, and the struct
member description object. It will define property accessors for
proto[memberKey] which read from/write to memory in
this.pointer. It modifies descr to make certain downstream
operations much simpler.
*/
const makeMemberWrapper = function f(ctor,name, descr){
if(!f._){
/*cache all available getters/setters/set-wrappers for
direct reuse in each accessor function. */
f._ = {getters: {}, setters: {}, sw:{}};
const a = ['i','p','P','s','f','d','v()'];
if(bigIntEnabled) a.push('j');
a.forEach(function(v){
//const ir = sigIR(v);
f._.getters[v] = sigDVGetter(v) /* DataView[MethodName] values for GETTERS */;
f._.setters[v] = sigDVSetter(v) /* DataView[MethodName] values for SETTERS */;
f._.sw[v] = sigDVSetWrapper(v) /* BigInt or Number ctor to wrap around values
for conversion */;
});
const rxSig1 = /^[ipPsjfd]$/,
rxSig2 = /^[vipPsjfd]\([ipPsjfd]*\)$/;
f.sigCheck = function(obj, name, key,sig){
if(Object.prototype.hasOwnProperty.call(obj, key)){
toss(obj.structName,'already has a property named',key+'.');
}
rxSig1.test(sig) || rxSig2.test(sig)
|| toss("Malformed signature for",
sPropName(obj.structName,name)+":",sig);
};
}
const key = ctor.memberKey(name);
f.sigCheck(ctor.prototype, name, key, descr.signature);
descr.key = key;
descr.name = name;
const sizeOf = sigSizeof(descr.signature);
const sigGlyph = sigLetter(descr.signature);
const xPropName = sPropName(ctor.prototype.structName,key);
const dbg = ctor.prototype.debugFlags.__flags;
/*
TODO?: set prototype of descr to an object which can set/fetch
its prefered representation, e.g. conversion to string or mapped
function. Advantage: we can avoid doing that via if/else if/else
in the get/set methods.
*/
const prop = Object.create(null);
prop.configurable = false;
prop.enumerable = false;
prop.get = function(){
if(dbg.getter){
log("debug.getter:",f._.getters[sigGlyph],"for", sigIR(sigGlyph),
xPropName,'@', this.pointer,'+',descr.offset,'sz',sizeOf);
|
|
<
<
|
<
<
<
<
<
<
|
<
|
|
|
|
<
|
<
<
<
<
<
|
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
|
memoryDump: rop(__memoryDump),
pointer: __ptrPropDescriptor,
setMemberCString: rop(function(memberName, str){
return __setMemberCString(this, memberName, str);
})
});
Object.defineProperties(StructType, {
allocCString: rop(__allocCString),
instanceForPointer: rop((ptr)=>__ptrBacklinksGlobal[ptr]),
isA: rop((v)=>v instanceof StructType),
hasExternalPointer: rop((v)=>(v instanceof StructType) && !!v[xPtrPropName]),
memberKey: __memberKeyProp
});
const isNumericValue = (v)=>Number.isFinite(v) || (v instanceof (BigInt || Number));
const makeMemberWrapper = function f(ctor,name, descr){
if(!f._){
f._ = {getters: {}, setters: {}, sw:{}};
const a = ['i','p','P','s','f','d','v()'];
if(bigIntEnabled) a.push('j');
a.forEach(function(v){
f._.getters[v] = sigDVGetter(v) ;
f._.setters[v] = sigDVSetter(v) ;
f._.sw[v] = sigDVSetWrapper(v) ;
});
const rxSig1 = /^[ipPsjfd]$/,
rxSig2 = /^[vipPsjfd]\([ipPsjfd]*\)$/;
f.sigCheck = function(obj, name, key,sig){
if(Object.prototype.hasOwnProperty.call(obj, key)){
toss(obj.structName,'already has a property named',key+'.');
}
rxSig1.test(sig) || rxSig2.test(sig)
|| toss("Malformed signature for",
sPropName(obj.structName,name)+":",sig);
};
}
const key = ctor.memberKey(name);
f.sigCheck(ctor.prototype, name, key, descr.signature);
descr.key = key;
descr.name = name;
const sizeOf = sigSizeof(descr.signature);
const sigGlyph = sigLetter(descr.signature);
const xPropName = sPropName(ctor.prototype.structName,key);
const dbg = ctor.prototype.debugFlags.__flags;
const prop = Object.create(null);
prop.configurable = false;
prop.enumerable = false;
prop.get = function(){
if(dbg.getter){
log("debug.getter:",f._.getters[sigGlyph],"for", sigIR(sigGlyph),
xPropName,'@', this.pointer,'+',descr.offset,'sz',sizeOf);
|
︙ | | | ︙ | |
8622
8623
8624
8625
8626
8627
8628
8629
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8646
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8652
8653
8654
|
}
if(!this.pointer){
toss("Cannot set struct property on disposed instance.");
}
if(null===v) v = 0;
else while(!isNumericValue(v)){
if(isAutoPtrSig(descr.signature) && (v instanceof StructType)){
// It's a struct instance: let's store its pointer value!
v = v.pointer || 0;
if(dbg.setter) log("debug.setter:",xPropName,"resolved to",v);
break;
}
toss("Invalid value for pointer-type",xPropName+'.');
}
(
new DataView(heap().buffer, this.pointer + descr.offset, sizeOf)
)[f._.setters[sigGlyph]](0, f._.sw[sigGlyph](v), isLittleEndian);
};
}
Object.defineProperty(ctor.prototype, key, prop);
}/*makeMemberWrapper*/;
/**
The main factory function which will be returned to the
caller.
*/
const StructBinder = function StructBinder(structName, structInfo){
if(1===arguments.length){
structInfo = structName;
structName = structInfo.name;
}else if(!structInfo.name){
structInfo.name = structName;
}
|
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|
|
<
<
<
|
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6579
|
}
if(!this.pointer){
toss("Cannot set struct property on disposed instance.");
}
if(null===v) v = 0;
else while(!isNumericValue(v)){
if(isAutoPtrSig(descr.signature) && (v instanceof StructType)){
v = v.pointer || 0;
if(dbg.setter) log("debug.setter:",xPropName,"resolved to",v);
break;
}
toss("Invalid value for pointer-type",xPropName+'.');
}
(
new DataView(heap().buffer, this.pointer + descr.offset, sizeOf)
)[f._.setters[sigGlyph]](0, f._.sw[sigGlyph](v), isLittleEndian);
};
}
Object.defineProperty(ctor.prototype, key, prop);
};
const StructBinder = function StructBinder(structName, structInfo){
if(1===arguments.length){
structInfo = structName;
structName = structInfo.name;
}else if(!structInfo.name){
structInfo.name = structName;
}
|
︙ | | | ︙ | |
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8671
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8674
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|
if(!lastMember) toss("No member property descriptions found.");
else if(structInfo.sizeof < lastMember.offset+lastMember.sizeof){
toss("Invalid struct config:",structName,
"max member offset ("+lastMember.offset+") ",
"extends past end of struct (sizeof="+structInfo.sizeof+").");
}
const debugFlags = rop(SBF.__makeDebugFlags(StructBinder.debugFlags));
/** Constructor for the StructCtor. */
const StructCtor = function StructCtor(externalMemory){
if(!(this instanceof StructCtor)){
toss("The",structName,"constructor may only be called via 'new'.");
}else if(arguments.length){
if(externalMemory!==(externalMemory|0) || externalMemory<=0){
toss("Invalid pointer value for",structName,"constructor.");
}
|
|
|
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6595
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|
if(!lastMember) toss("No member property descriptions found.");
else if(structInfo.sizeof < lastMember.offset+lastMember.sizeof){
toss("Invalid struct config:",structName,
"max member offset ("+lastMember.offset+") ",
"extends past end of struct (sizeof="+structInfo.sizeof+").");
}
const debugFlags = rop(SBF.__makeDebugFlags(StructBinder.debugFlags));
const StructCtor = function StructCtor(externalMemory){
if(!(this instanceof StructCtor)){
toss("The",structName,"constructor may only be called via 'new'.");
}else if(arguments.length){
if(externalMemory!==(externalMemory|0) || externalMemory<=0){
toss("Invalid pointer value for",structName,"constructor.");
}
|
︙ | | | ︙ | |
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|
structInfo: rop(structInfo),
structName: rop(structName)
});
StructCtor.prototype = new StructType(structName, structInfo, rop);
Object.defineProperties(StructCtor.prototype,{
debugFlags: debugFlags,
constructor: rop(StructCtor)
/*if we assign StructCtor.prototype and don't do
this then StructCtor!==instance.constructor!*/
});
Object.keys(structInfo.members).forEach(
(name)=>makeMemberWrapper(StructCtor, name, structInfo.members[name])
);
return StructCtor;
};
StructBinder.instanceForPointer = StructType.instanceForPointer;
StructBinder.StructType = StructType;
StructBinder.config = config;
StructBinder.allocCString = __allocCString;
if(!StructBinder.debugFlags){
StructBinder.debugFlags = SBF.__makeDebugFlags(SBF.debugFlags);
}
return StructBinder;
}/*StructBinderFactory*/;
/* END FILE: jaccwabyt/jaccwabyt.js */
/* BEGIN FILE: api/sqlite3-api-glue.js */
/*
2022-07-22
The author disclaims copyright to this source code. In place of a
legal notice, here is a blessing:
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
***********************************************************************
This file glues together disparate pieces of JS which are loaded in
previous steps of the sqlite3-api.js bootstrapping process:
sqlite3-api-prologue.js, whwasmutil.js, and jaccwabyt.js. It
initializes the main API pieces so that the downstream components
(e.g. sqlite3-api-oo1.js) have all that they need.
*/
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
'use strict';
const toss = (...args)=>{throw new Error(args.join(' '))};
const toss3 = sqlite3.SQLite3Error.toss;
const capi = sqlite3.capi, wasm = capi.wasm, util = capi.util;
self.WhWasmUtilInstaller(capi.wasm);
delete self.WhWasmUtilInstaller;
/**
Install JS<->C struct bindings for the non-opaque struct types we
need... */
sqlite3.StructBinder = self.Jaccwabyt({
heap: 0 ? wasm.memory : wasm.heap8u,
alloc: wasm.alloc,
dealloc: wasm.dealloc,
functionTable: wasm.functionTable,
bigIntEnabled: wasm.bigIntEnabled,
memberPrefix: '$'
});
delete self.Jaccwabyt;
if(0){
/* "The problem" is that the following isn't even remotely
type-safe. OTOH, nothing about WASM pointers is. */
const argPointer = wasm.xWrap.argAdapter('*');
wasm.xWrap.argAdapter('StructType', (v)=>{
if(v && v.constructor && v instanceof StructBinder.StructType){
v = v.pointer;
}
return wasm.isPtr(v)
? argPointer(v)
: toss("Invalid (object) type for StructType-type argument.");
});
}
if(1){/* Convert Arrays and certain TypedArrays to strings for
'flexible-string'-type arguments */
const xString = wasm.xWrap.argAdapter('string');
wasm.xWrap.argAdapter(
'flexible-string', (v)=>xString(util.flexibleString(v))
);
}
if(1){// WhWasmUtil.xWrap() bindings...
/**
Add some descriptive xWrap() aliases for '*' intended to (A)
initially improve readability/correctness of capi.signatures
and (B) eventually perhaps provide automatic conversion from
higher-level representations, e.g. capi.sqlite3_vfs to
`sqlite3_vfs*` via capi.sqlite3_vfs.pointer.
*/
const aPtr = wasm.xWrap.argAdapter('*');
wasm.xWrap.argAdapter('sqlite3*', aPtr)
('sqlite3_stmt*', aPtr)
('sqlite3_context*', aPtr)
('sqlite3_value*', aPtr)
('sqlite3_vfs*', aPtr)
('void*', aPtr);
wasm.xWrap.resultAdapter('sqlite3*', aPtr)
('sqlite3_context*', aPtr)
('sqlite3_stmt*', aPtr)
('sqlite3_vfs*', aPtr)
('void*', aPtr);
/**
Populate api object with sqlite3_...() by binding the "raw" wasm
exports into type-converting proxies using wasm.xWrap().
*/
for(const e of wasm.bindingSignatures){
capi[e[0]] = wasm.xWrap.apply(null, e);
}
for(const e of wasm.bindingSignatures.wasm){
capi.wasm[e[0]] = wasm.xWrap.apply(null, e);
}
/* For C API functions which cannot work properly unless
wasm.bigIntEnabled is true, install a bogus impl which
throws if called when bigIntEnabled is false. */
const fI64Disabled = function(fname){
return ()=>toss(fname+"() disabled due to lack",
"of BigInt support in this build.");
};
for(const e of wasm.bindingSignatures.int64){
capi[e[0]] = wasm.bigIntEnabled
? wasm.xWrap.apply(null, e)
: fI64Disabled(e[0]);
}
if(wasm.exports.sqlite3_wasm_db_error){
util.sqlite3_wasm_db_error = capi.wasm.xWrap(
'sqlite3_wasm_db_error', 'int', 'sqlite3*', 'int', 'string'
);
}else{
util.sqlite3_wasm_db_error = function(pDb,errCode,msg){
console.warn("sqlite3_wasm_db_error() is not exported.",arguments);
return errCode;
};
}
/**
When registering a VFS and its related components it may be
necessary to ensure that JS keeps a reference to them to keep
them from getting garbage collected. Simply pass each such value
to this function and a reference will be held to it for the life
of the app.
*/
capi.sqlite3_vfs_register.addReference = function f(...args){
if(!f._) f._ = [];
f._.push(...args);
};
}/*xWrap() bindings*/;
/**
Internal helper to assist in validating call argument counts in
the hand-written sqlite3_xyz() wrappers. We do this only for
consistency with non-special-case wrappings.
*/
const __dbArgcMismatch = (pDb,f,n)=>{
return sqlite3.util.sqlite3_wasm_db_error(pDb, capi.SQLITE_MISUSE,
f+"() requires "+n+" argument"+
(1===n?'':'s')+".");
};
/**
Helper for flexible-string conversions which require a
byte-length counterpart argument. Passed a value and its
ostensible length, this function returns [V,N], where V
is either v or a transformed copy of v and N is either n,
-1, or the byte length of v (if it's a byte array).
*/
const __flexiString = function(v,n){
if('string'===typeof v){
n = -1;
}else if(util.isSQLableTypedArray(v)){
n = v.byteLength;
v = util.typedArrayToString(v);
}else if(Array.isArray(v)){
v = v.join('');
n = -1;
}
return [v, n];
};
if(1){/* Special-case handling of sqlite3_exec() */
const __exec = wasm.xWrap("sqlite3_exec", "int",
["sqlite3*", "flexible-string", "*", "*", "**"]);
/* Documented in the api object's initializer. */
capi.sqlite3_exec = function f(pDb, sql, callback, pVoid, pErrMsg){
if(f.length!==arguments.length){
return __dbArgcMismatch(pDb,"sqlite3_exec",f.length);
}else if('function' !== typeof callback){
return __exec(pDb, sql, callback, pVoid, pErrMsg);
}
/* Wrap the callback in a WASM-bound function and convert the callback's
`(char**)` arguments to arrays of strings... */
const wasm = capi.wasm;
const cbwrap = function(pVoid, nCols, pColVals, pColNames){
let rc = capi.SQLITE_ERROR;
try {
let aVals = [], aNames = [], i = 0, offset = 0;
for( ; i < nCols; offset += (wasm.ptrSizeof * ++i) ){
aVals.push( wasm.cstringToJs(wasm.getPtrValue(pColVals + offset)) );
aNames.push( wasm.cstringToJs(wasm.getPtrValue(pColNames + offset)) );
}
rc = callback(pVoid, nCols, aVals, aNames) | 0;
/* The first 2 args of the callback are useless for JS but
we want the JS mapping of the C API to be as close to the
C API as possible. */
}catch(e){
/* If we set the db error state here, the higher-level exec() call
replaces it with its own, so we have no way of reporting the
exception message except the console. We must not propagate
exceptions through the C API. */
}
return rc;
};
let pFunc, rc;
try{
pFunc = wasm.installFunction("ipipp", cbwrap);
rc = __exec(pDb, sql, pFunc, pVoid, pErrMsg);
}catch(e){
rc = util.sqlite3_wasm_db_error(pDb, capi.SQLITE_ERROR,
"Error running exec(): "+e.message);
}finally{
if(pFunc) wasm.uninstallFunction(pFunc);
}
return rc;
};
}/*sqlite3_exec() proxy*/;
if(1){/* Special-case handling of sqlite3_create_function_v2()
and sqlite3_create_window_function() */
const sqlite3CreateFunction = wasm.xWrap(
"sqlite3_create_function_v2", "int",
["sqlite3*", "string"/*funcName*/, "int"/*nArg*/,
"int"/*eTextRep*/, "*"/*pApp*/,
"*"/*xStep*/,"*"/*xFinal*/, "*"/*xValue*/, "*"/*xDestroy*/]
);
const sqlite3CreateWindowFunction = wasm.xWrap(
"sqlite3_create_window_function", "int",
["sqlite3*", "string"/*funcName*/, "int"/*nArg*/,
"int"/*eTextRep*/, "*"/*pApp*/,
"*"/*xStep*/,"*"/*xFinal*/, "*"/*xValue*/,
"*"/*xInverse*/, "*"/*xDestroy*/]
);
const __udfSetResult = function(pCtx, val){
//console.warn("udfSetResult",typeof val, val);
switch(typeof val) {
case 'undefined':
/* Assume that the client already called sqlite3_result_xxx(). */
break;
case 'boolean':
capi.sqlite3_result_int(pCtx, val ? 1 : 0);
break;
case 'bigint':
if(wasm.bigIntEnabled){
if(util.bigIntFits64(val)) capi.sqlite3_result_int64(pCtx, val);
|
|
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<
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|
structInfo: rop(structInfo),
structName: rop(structName)
});
StructCtor.prototype = new StructType(structName, structInfo, rop);
Object.defineProperties(StructCtor.prototype,{
debugFlags: debugFlags,
constructor: rop(StructCtor)
});
Object.keys(structInfo.members).forEach(
(name)=>makeMemberWrapper(StructCtor, name, structInfo.members[name])
);
return StructCtor;
};
StructBinder.instanceForPointer = StructType.instanceForPointer;
StructBinder.StructType = StructType;
StructBinder.config = config;
StructBinder.allocCString = __allocCString;
if(!StructBinder.debugFlags){
StructBinder.debugFlags = SBF.__makeDebugFlags(SBF.debugFlags);
}
return StructBinder;
};
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
'use strict';
const toss = (...args)=>{throw new Error(args.join(' '))};
const toss3 = sqlite3.SQLite3Error.toss;
const capi = sqlite3.capi, wasm = capi.wasm, util = capi.util;
self.WhWasmUtilInstaller(capi.wasm);
delete self.WhWasmUtilInstaller;
sqlite3.StructBinder = self.Jaccwabyt({
heap: 0 ? wasm.memory : wasm.heap8u,
alloc: wasm.alloc,
dealloc: wasm.dealloc,
functionTable: wasm.functionTable,
bigIntEnabled: wasm.bigIntEnabled,
memberPrefix: '$'
});
delete self.Jaccwabyt;
if(0){
const argPointer = wasm.xWrap.argAdapter('*');
wasm.xWrap.argAdapter('StructType', (v)=>{
if(v && v.constructor && v instanceof StructBinder.StructType){
v = v.pointer;
}
return wasm.isPtr(v)
? argPointer(v)
: toss("Invalid (object) type for StructType-type argument.");
});
}
if(1){
const xString = wasm.xWrap.argAdapter('string');
wasm.xWrap.argAdapter(
'flexible-string', (v)=>xString(util.flexibleString(v))
);
}
if(1){
const aPtr = wasm.xWrap.argAdapter('*');
wasm.xWrap.argAdapter('sqlite3*', aPtr)
('sqlite3_stmt*', aPtr)
('sqlite3_context*', aPtr)
('sqlite3_value*', aPtr)
('sqlite3_vfs*', aPtr)
('void*', aPtr);
wasm.xWrap.resultAdapter('sqlite3*', aPtr)
('sqlite3_context*', aPtr)
('sqlite3_stmt*', aPtr)
('sqlite3_vfs*', aPtr)
('void*', aPtr);
for(const e of wasm.bindingSignatures){
capi[e[0]] = wasm.xWrap.apply(null, e);
}
for(const e of wasm.bindingSignatures.wasm){
capi.wasm[e[0]] = wasm.xWrap.apply(null, e);
}
const fI64Disabled = function(fname){
return ()=>toss(fname+"() disabled due to lack",
"of BigInt support in this build.");
};
for(const e of wasm.bindingSignatures.int64){
capi[e[0]] = wasm.bigIntEnabled
? wasm.xWrap.apply(null, e)
: fI64Disabled(e[0]);
}
delete wasm.bindingSignatures;
if(wasm.exports.sqlite3_wasm_db_error){
util.sqlite3_wasm_db_error = capi.wasm.xWrap(
'sqlite3_wasm_db_error', 'int', 'sqlite3*', 'int', 'string'
);
}else{
util.sqlite3_wasm_db_error = function(pDb,errCode,msg){
console.warn("sqlite3_wasm_db_error() is not exported.",arguments);
return errCode;
};
}
};
capi.sqlite3_vfs_register.addReference = function f(...args){
if(!f._) f._ = [];
f._.push(...args);
};
const __dbArgcMismatch = (pDb,f,n)=>{
return sqlite3.util.sqlite3_wasm_db_error(pDb, capi.SQLITE_MISUSE,
f+"() requires "+n+" argument"+
(1===n?'':'s')+".");
};
const __flexiString = function(v,n){
if('string'===typeof v){
n = -1;
}else if(util.isSQLableTypedArray(v)){
n = v.byteLength;
v = util.typedArrayToString(v);
}else if(Array.isArray(v)){
v = v.join('');
n = -1;
}
return [v, n];
};
if(1){
const __exec = wasm.xWrap("sqlite3_exec", "int",
["sqlite3*", "flexible-string", "*", "*", "**"]);
capi.sqlite3_exec = function f(pDb, sql, callback, pVoid, pErrMsg){
if(f.length!==arguments.length){
return __dbArgcMismatch(pDb,"sqlite3_exec",f.length);
}else if('function' !== typeof callback){
return __exec(pDb, sql, callback, pVoid, pErrMsg);
}
const wasm = capi.wasm;
const cbwrap = function(pVoid, nCols, pColVals, pColNames){
let rc = capi.SQLITE_ERROR;
try {
let aVals = [], aNames = [], i = 0, offset = 0;
for( ; i < nCols; offset += (wasm.ptrSizeof * ++i) ){
aVals.push( wasm.cstringToJs(wasm.getPtrValue(pColVals + offset)) );
aNames.push( wasm.cstringToJs(wasm.getPtrValue(pColNames + offset)) );
}
rc = callback(pVoid, nCols, aVals, aNames) | 0;
}catch(e){
}
return rc;
};
let pFunc, rc;
try{
pFunc = wasm.installFunction("ipipp", cbwrap);
rc = __exec(pDb, sql, pFunc, pVoid, pErrMsg);
}catch(e){
rc = util.sqlite3_wasm_db_error(pDb, capi.SQLITE_ERROR,
"Error running exec(): "+e.message);
}finally{
if(pFunc) wasm.uninstallFunction(pFunc);
}
return rc;
};
};
if(1){
const sqlite3CreateFunction = wasm.xWrap(
"sqlite3_create_function_v2", "int",
["sqlite3*", "string", "int",
"int", "*",
"*","*", "*", "*"]
);
const sqlite3CreateWindowFunction = wasm.xWrap(
"sqlite3_create_window_function", "int",
["sqlite3*", "string", "int",
"int", "*",
"*","*", "*",
"*", "*"]
);
const __udfSetResult = function(pCtx, val){
switch(typeof val) {
case 'undefined':
break;
case 'boolean':
capi.sqlite3_result_int(pCtx, val ? 1 : 0);
break;
case 'bigint':
if(wasm.bigIntEnabled){
if(util.bigIntFits64(val)) capi.sqlite3_result_int64(pCtx, val);
|
︙ | | | ︙ | |
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
|
: capi.sqlite3_result_double)(pCtx, val);
break;
}
case 'string':
capi.sqlite3_result_text(pCtx, val, -1, capi.SQLITE_TRANSIENT);
break;
case 'object':
if(null===val/*yes, typeof null === 'object'*/) {
capi.sqlite3_result_null(pCtx);
break;
}else if(util.isBindableTypedArray(val)){
const pBlob = wasm.allocFromTypedArray(val);
capi.sqlite3_result_blob(
pCtx, pBlob, val.byteLength,
wasm.exports[sqlite3.config.deallocExportName]
);
break;
}
// else fall through
default:
toss3("Don't not how to handle this UDF result value:",(typeof val), val);
};
}/*__udfSetResult()*/;
const __udfConvertArgs = function(argc, pArgv){
let i, pVal, valType, arg;
const tgt = [];
for(i = 0; i < argc; ++i){
pVal = wasm.getPtrValue(pArgv + (wasm.ptrSizeof * i));
/**
Curiously: despite ostensibly requiring 8-byte
alignment, the pArgv array is parcelled into chunks of
4 bytes (1 pointer each). The values those point to
have 8-byte alignment but the individual argv entries
do not.
*/
valType = capi.sqlite3_value_type(pVal);
switch(valType){
case capi.SQLITE_INTEGER:
if(wasm.bigIntEnabled){
arg = capi.sqlite3_value_int64(pVal);
if(util.bigIntFitsDouble(arg)) arg = Number(arg);
}
else arg = capi.sqlite3_value_double(pVal)/*yes, double, for larger integers*/;
break;
case capi.SQLITE_FLOAT:
arg = capi.sqlite3_value_double(pVal);
break;
case capi.SQLITE_TEXT:
arg = capi.sqlite3_value_text(pVal);
break;
|
|
|
|
|
<
<
<
<
<
<
|
|
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
|
: capi.sqlite3_result_double)(pCtx, val);
break;
}
case 'string':
capi.sqlite3_result_text(pCtx, val, -1, capi.SQLITE_TRANSIENT);
break;
case 'object':
if(null===val) {
capi.sqlite3_result_null(pCtx);
break;
}else if(util.isBindableTypedArray(val)){
const pBlob = wasm.allocFromTypedArray(val);
capi.sqlite3_result_blob(
pCtx, pBlob, val.byteLength,
wasm.exports[sqlite3.config.deallocExportName]
);
break;
}
default:
toss3("Don't not how to handle this UDF result value:",(typeof val), val);
};
};
const __udfConvertArgs = function(argc, pArgv){
let i, pVal, valType, arg;
const tgt = [];
for(i = 0; i < argc; ++i){
pVal = wasm.getPtrValue(pArgv + (wasm.ptrSizeof * i));
valType = capi.sqlite3_value_type(pVal);
switch(valType){
case capi.SQLITE_INTEGER:
if(wasm.bigIntEnabled){
arg = capi.sqlite3_value_int64(pVal);
if(util.bigIntFitsDouble(arg)) arg = Number(arg);
}
else arg = capi.sqlite3_value_double(pVal);
break;
case capi.SQLITE_FLOAT:
arg = capi.sqlite3_value_double(pVal);
break;
case capi.SQLITE_TEXT:
arg = capi.sqlite3_value_text(pVal);
break;
|
︙ | | | ︙ | |
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
|
toss3("Unhandled sqlite3_value_type()",valType,
"is possibly indicative of incorrect",
"pointer size assumption.");
}
tgt.push(arg);
}
return tgt;
}/*__udfConvertArgs()*/;
const __udfSetError = (pCtx, e)=>{
if(e instanceof sqlite3.WasmAllocError){
capi.sqlite3_result_error_nomem(pCtx);
}else{
const msg = ('string'===typeof e) ? e : e.message;
capi.sqlite3_result_error(pCtx, msg, -1);
}
};
const __xFunc = function(callback){
return function(pCtx, argc, pArgv){
try{ __udfSetResult(pCtx, callback(pCtx, ...__udfConvertArgs(argc, pArgv))) }
catch(e){
//console.error('xFunc() caught:',e);
__udfSetError(pCtx, e);
}
};
};
const __xInverseAndStep = function(callback){
return function(pCtx, argc, pArgv){
|
|
|
|
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
|
toss3("Unhandled sqlite3_value_type()",valType,
"is possibly indicative of incorrect",
"pointer size assumption.");
}
tgt.push(arg);
}
return tgt;
};
const __udfSetError = (pCtx, e)=>{
if(e instanceof sqlite3.WasmAllocError){
capi.sqlite3_result_error_nomem(pCtx);
}else{
const msg = ('string'===typeof e) ? e : e.message;
capi.sqlite3_result_error(pCtx, msg, -1);
}
};
const __xFunc = function(callback){
return function(pCtx, argc, pArgv){
try{ __udfSetResult(pCtx, callback(pCtx, ...__udfConvertArgs(argc, pArgv))) }
catch(e){
__udfSetError(pCtx, e);
}
};
};
const __xInverseAndStep = function(callback){
return function(pCtx, argc, pArgv){
|
︙ | | | ︙ | |
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
|
tgtUninst.push(fArg);
}
rc.push(fArg);
}
return rc;
};
/* Documented in the api object's initializer. */
capi.sqlite3_create_function_v2 = function f(
pDb, funcName, nArg, eTextRep, pApp,
xFunc, //void (*xFunc)(sqlite3_context*,int,sqlite3_value**)
xStep, //void (*xStep)(sqlite3_context*,int,sqlite3_value**)
xFinal, //void (*xFinal)(sqlite3_context*)
xDestroy //void (*xDestroy)(void*)
){
if(f.length!==arguments.length){
return __dbArgcMismatch(pDb,"sqlite3_create_function_v2",f.length);
}
/* Wrap the callbacks in a WASM-bound functions... */
const wasm = capi.wasm;
const uninstall = [/*funcs to uninstall on error*/];
let rc;
try{
const funcArgs = __xWrapFuncs({xFunc, xStep, xFinal, xDestroy},
uninstall);
rc = sqlite3CreateFunction(pDb, funcName, nArg, eTextRep,
pApp, ...funcArgs);
}catch(e){
|
|
|
|
|
|
|
|
|
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
|
tgtUninst.push(fArg);
}
rc.push(fArg);
}
return rc;
};
capi.sqlite3_create_function_v2 = function f(
pDb, funcName, nArg, eTextRep, pApp,
xFunc,
xStep,
xFinal,
xDestroy
){
if(f.length!==arguments.length){
return __dbArgcMismatch(pDb,"sqlite3_create_function_v2",f.length);
}
const wasm = capi.wasm;
const uninstall = [];
let rc;
try{
const funcArgs = __xWrapFuncs({xFunc, xStep, xFinal, xDestroy},
uninstall);
rc = sqlite3CreateFunction(pDb, funcName, nArg, eTextRep,
pApp, ...funcArgs);
}catch(e){
|
︙ | | | ︙ | |
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
|
){
return (f.length===arguments.length)
? capi.sqlite3_create_function_v2(pDb, funcName, nArg, eTextRep,
pApp, xFunc, xStep, xFinal, 0)
: __dbArgcMismatch(pDb,"sqlite3_create_function",f.length);
};
/* Documented in the api object's initializer. */
capi.sqlite3_create_window_function = function f(
pDb, funcName, nArg, eTextRep, pApp,
xStep, //void (*xStep)(sqlite3_context*,int,sqlite3_value**)
xFinal, //void (*xFinal)(sqlite3_context*)
xValue, //void (*xFinal)(sqlite3_context*)
xInverse,//void (*xStep)(sqlite3_context*,int,sqlite3_value**)
xDestroy //void (*xDestroy)(void*)
){
if(f.length!==arguments.length){
return __dbArgcMismatch(pDb,"sqlite3_create_window_function",f.length);
}
/* Wrap the callbacks in a WASM-bound functions... */
const wasm = capi.wasm;
const uninstall = [/*funcs to uninstall on error*/];
let rc;
try{
const funcArgs = __xWrapFuncs({xStep, xFinal, xValue, xInverse, xDestroy},
uninstall);
rc = sqlite3CreateWindowFunction(pDb, funcName, nArg, eTextRep,
pApp, ...funcArgs);
}catch(e){
console.error("sqlite3_create_window_function() setup threw:",e);
for(let v of uninstall){
wasm.uninstallFunction(v);
}
rc = util.sqlite3_wasm_db_error(pDb, capi.SQLITE_ERROR,
"Creation of UDF threw: "+e.message);
}
return rc;
};
/**
A helper for UDFs implemented in JS and bound to WASM by the
client. Given a JS value, udfSetResult(pCtx,X) calls one of the
sqlite3_result_xyz(pCtx,...) routines, depending on X's data
type:
- `null`: sqlite3_result_null()
- `boolean`: sqlite3_result_int()
- `number`: sqlite3_result_int() or sqlite3_result_double()
- `string`: sqlite3_result_text()
- Uint8Array or Int8Array: sqlite3_result_blob()
- `undefined`: indicates that the UDF called one of the
`sqlite3_result_xyz()` routines on its own, making this
function a no-op. Results are _undefined_ if this function is
passed the `undefined` value but did _not_ call one of the
`sqlite3_result_xyz()` routines.
Anything else triggers sqlite3_result_error().
*/
capi.sqlite3_create_function_v2.udfSetResult =
capi.sqlite3_create_function.udfSetResult =
capi.sqlite3_create_window_function.udfSetResult = __udfSetResult;
/**
A helper for UDFs implemented in JS and bound to WASM by the
client. When passed the
(argc,argv) values from the UDF-related functions which receive
them (xFunc, xStep, xInverse), it creates a JS array
representing those arguments, converting each to JS in a manner
appropriate to its data type: numeric, text, blob
(Uint8Array), or null.
Results are undefined if it's passed anything other than those
two arguments from those specific contexts.
Thus an argc of 4 will result in a length-4 array containing
the converted values from the corresponding argv.
The conversion will throw only on allocation error or an internal
error.
*/
capi.sqlite3_create_function_v2.udfConvertArgs =
capi.sqlite3_create_function.udfConvertArgs =
capi.sqlite3_create_window_function.udfConvertArgs = __udfConvertArgs;
/**
A helper for UDFs implemented in JS and bound to WASM by the
client. It expects to be a passed `(sqlite3_context*, Error)`
(an exception object or message string). And it sets the
current UDF's result to sqlite3_result_error_nomem() or
sqlite3_result_error(), depending on whether the 2nd argument
is a sqlite3.WasmAllocError object or not.
*/
capi.sqlite3_create_function_v2.udfSetError =
capi.sqlite3_create_function.udfSetError =
capi.sqlite3_create_window_function.udfSetError = __udfSetError;
}/*sqlite3_create_function_v2() and sqlite3_create_window_function() proxies*/;
if(1){/* Special-case handling of sqlite3_prepare_v2() and
sqlite3_prepare_v3() */
/**
Scope-local holder of the two impls of sqlite3_prepare_v2/v3().
*/
const __prepare = Object.create(null);
/**
This binding expects a JS string as its 2nd argument and
null as its final argument. In order to compile multiple
statements from a single string, the "full" impl (see
below) must be used.
*/
__prepare.basic = wasm.xWrap('sqlite3_prepare_v3',
"int", ["sqlite3*", "string",
"int"/*ignored for this impl!*/,
"int", "**",
"**"/*MUST be 0 or null or undefined!*/]);
/**
Impl which requires that the 2nd argument be a pointer
to the SQL string, instead of being converted to a
string. This variant is necessary for cases where we
require a non-NULL value for the final argument
(exec()'ing multiple statements from one input
string). For simpler cases, where only the first
statement in the SQL string is required, the wrapper
named sqlite3_prepare_v2() is sufficient and easier to
use because it doesn't require dealing with pointers.
*/
__prepare.full = wasm.xWrap('sqlite3_prepare_v3',
"int", ["sqlite3*", "*", "int", "int",
"**", "**"]);
/* Documented in the api object's initializer. */
capi.sqlite3_prepare_v3 = function f(pDb, sql, sqlLen, prepFlags, ppStmt, pzTail){
if(f.length!==arguments.length){
return __dbArgcMismatch(pDb,"sqlite3_prepare_v3",f.length);
}
const [xSql, xSqlLen] = __flexiString(sql, sqlLen);
switch(typeof xSql){
case 'string': return __prepare.basic(pDb, xSql, xSqlLen, prepFlags, ppStmt, null);
case 'number': return __prepare.full(pDb, xSql, xSqlLen, prepFlags, ppStmt, pzTail);
default:
return util.sqlite3_wasm_db_error(
pDb, capi.SQLITE_MISUSE,
"Invalid SQL argument type for sqlite3_prepare_v2/v3()."
);
}
};
/* Documented in the api object's initializer. */
capi.sqlite3_prepare_v2 = function f(pDb, sql, sqlLen, ppStmt, pzTail){
return (f.length===arguments.length)
? capi.sqlite3_prepare_v3(pDb, sql, sqlLen, 0, ppStmt, pzTail)
: __dbArgcMismatch(pDb,"sqlite3_prepare_v2",f.length);
};
}/*sqlite3_prepare_v2/v3()*/;
{/* Import C-level constants and structs... */
const cJson = wasm.xCall('sqlite3_wasm_enum_json');
if(!cJson){
toss("Maintenance required: increase sqlite3_wasm_enum_json()'s",
"static buffer size!");
}
wasm.ctype = JSON.parse(wasm.cstringToJs(cJson));
//console.debug('wasm.ctype length =',wasm.cstrlen(cJson));
for(const t of ['access', 'blobFinalizers', 'dataTypes',
'encodings', 'fcntl', 'flock', 'ioCap',
'openFlags', 'prepareFlags', 'resultCodes',
'serialize', 'syncFlags', 'trace', 'udfFlags',
'version'
]){
for(const e of Object.entries(wasm.ctype[t])){
// ^^^ [k,v] there triggers a buggy code transormation via one
// of the Emscripten-driven optimizers.
capi[e[0]] = e[1];
}
}
const __rcMap = Object.create(null);
for(const t of ['resultCodes']){
for(const e of Object.entries(wasm.ctype[t])){
__rcMap[e[1]] = e[0];
}
}
/**
For the given integer, returns the SQLITE_xxx result code as a
string, or undefined if no such mapping is found.
*/
capi.sqlite3_js_rc_str = (rc)=>__rcMap[rc];
/* Bind all registered C-side structs... */
const notThese = Object.assign(Object.create(null),{
// Structs NOT to register
WasmTestStruct: true
});
if(!util.isUIThread()){
/* We remove the kvvfs VFS from Worker threads below. */
notThese.sqlite3_kvvfs_methods = true;
}
for(const s of wasm.ctype.structs){
if(!notThese[s.name]){
capi[s.name] = sqlite3.StructBinder(s);
}
}
}/*end C constant imports*/
const pKvvfs = capi.sqlite3_vfs_find("kvvfs");
if( pKvvfs ){/* kvvfs-specific glue */
if(util.isUIThread()){
const kvvfsMethods = new capi.sqlite3_kvvfs_methods(
wasm.exports.sqlite3_wasm_kvvfs_methods()
);
delete capi.sqlite3_kvvfs_methods;
const kvvfsMakeKey = wasm.exports.sqlite3_wasm_kvvfsMakeKeyOnPstack,
pstack = wasm.pstack,
pAllocRaw = wasm.exports.sqlite3_wasm_pstack_alloc;
const kvvfsStorage = (zClass)=>
((115/*=='s'*/===wasm.getMemValue(zClass))
? sessionStorage : localStorage);
const kvvfsImpls = {
xRead: (zClass, zKey, zBuf, nBuf)=>{
const stack = pstack.pointer,
astack = wasm.scopedAllocPush();
try {
const zXKey = kvvfsMakeKey(zClass,zKey);
if(!zXKey) return -3/*OOM*/;
const jKey = wasm.cstringToJs(zXKey);
const jV = kvvfsStorage(zClass).getItem(jKey);
if(!jV) return -1;
const nV = jV.length /* Note that we are relying 100% on v being
ASCII so that jV.length is equal to the
C-string's byte length. */;
if(nBuf<=0) return nV;
else if(1===nBuf){
wasm.setMemValue(zBuf, 0);
return nV;
}
const zV = wasm.scopedAllocCString(jV);
if(nBuf > nV + 1) nBuf = nV + 1;
|
|
|
|
|
|
|
|
|
<
<
<
<
<
|
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
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){
return (f.length===arguments.length)
? capi.sqlite3_create_function_v2(pDb, funcName, nArg, eTextRep,
pApp, xFunc, xStep, xFinal, 0)
: __dbArgcMismatch(pDb,"sqlite3_create_function",f.length);
};
capi.sqlite3_create_window_function = function f(
pDb, funcName, nArg, eTextRep, pApp,
xStep,
xFinal,
xValue,
xInverse,
xDestroy
){
if(f.length!==arguments.length){
return __dbArgcMismatch(pDb,"sqlite3_create_window_function",f.length);
}
const wasm = capi.wasm;
const uninstall = [];
let rc;
try{
const funcArgs = __xWrapFuncs({xStep, xFinal, xValue, xInverse, xDestroy},
uninstall);
rc = sqlite3CreateWindowFunction(pDb, funcName, nArg, eTextRep,
pApp, ...funcArgs);
}catch(e){
console.error("sqlite3_create_window_function() setup threw:",e);
for(let v of uninstall){
wasm.uninstallFunction(v);
}
rc = util.sqlite3_wasm_db_error(pDb, capi.SQLITE_ERROR,
"Creation of UDF threw: "+e.message);
}
return rc;
};
capi.sqlite3_create_function_v2.udfSetResult =
capi.sqlite3_create_function.udfSetResult =
capi.sqlite3_create_window_function.udfSetResult = __udfSetResult;
capi.sqlite3_create_function_v2.udfConvertArgs =
capi.sqlite3_create_function.udfConvertArgs =
capi.sqlite3_create_window_function.udfConvertArgs = __udfConvertArgs;
capi.sqlite3_create_function_v2.udfSetError =
capi.sqlite3_create_function.udfSetError =
capi.sqlite3_create_window_function.udfSetError = __udfSetError;
};
if(1){
const __prepare = Object.create(null);
__prepare.basic = wasm.xWrap('sqlite3_prepare_v3',
"int", ["sqlite3*", "string",
"int",
"int", "**",
"**"]);
__prepare.full = wasm.xWrap('sqlite3_prepare_v3',
"int", ["sqlite3*", "*", "int", "int",
"**", "**"]);
capi.sqlite3_prepare_v3 = function f(pDb, sql, sqlLen, prepFlags, ppStmt, pzTail){
if(f.length!==arguments.length){
return __dbArgcMismatch(pDb,"sqlite3_prepare_v3",f.length);
}
const [xSql, xSqlLen] = __flexiString(sql, sqlLen);
switch(typeof xSql){
case 'string': return __prepare.basic(pDb, xSql, xSqlLen, prepFlags, ppStmt, null);
case 'number': return __prepare.full(pDb, xSql, xSqlLen, prepFlags, ppStmt, pzTail);
default:
return util.sqlite3_wasm_db_error(
pDb, capi.SQLITE_MISUSE,
"Invalid SQL argument type for sqlite3_prepare_v2/v3()."
);
}
};
capi.sqlite3_prepare_v2 = function f(pDb, sql, sqlLen, ppStmt, pzTail){
return (f.length===arguments.length)
? capi.sqlite3_prepare_v3(pDb, sql, sqlLen, 0, ppStmt, pzTail)
: __dbArgcMismatch(pDb,"sqlite3_prepare_v2",f.length);
};
};
{
const cJson = wasm.xCall('sqlite3_wasm_enum_json');
if(!cJson){
toss("Maintenance required: increase sqlite3_wasm_enum_json()'s",
"static buffer size!");
}
wasm.ctype = JSON.parse(wasm.cstringToJs(cJson));
for(const t of ['access', 'blobFinalizers', 'dataTypes',
'encodings', 'fcntl', 'flock', 'ioCap',
'openFlags', 'prepareFlags', 'resultCodes',
'serialize', 'syncFlags', 'trace', 'udfFlags',
'version'
]){
for(const e of Object.entries(wasm.ctype[t])){
capi[e[0]] = e[1];
}
}
const __rcMap = Object.create(null);
for(const t of ['resultCodes']){
for(const e of Object.entries(wasm.ctype[t])){
__rcMap[e[1]] = e[0];
}
}
capi.sqlite3_js_rc_str = (rc)=>__rcMap[rc];
const notThese = Object.assign(Object.create(null),{
WasmTestStruct: true
});
if(!util.isUIThread()){
notThese.sqlite3_kvvfs_methods = true;
}
for(const s of wasm.ctype.structs){
if(!notThese[s.name]){
capi[s.name] = sqlite3.StructBinder(s);
}
}
}
const pKvvfs = capi.sqlite3_vfs_find("kvvfs");
if( pKvvfs ){
if(util.isUIThread()){
const kvvfsMethods = new capi.sqlite3_kvvfs_methods(
wasm.exports.sqlite3_wasm_kvvfs_methods()
);
delete capi.sqlite3_kvvfs_methods;
const kvvfsMakeKey = wasm.exports.sqlite3_wasm_kvvfsMakeKeyOnPstack,
pstack = wasm.pstack,
pAllocRaw = wasm.exports.sqlite3_wasm_pstack_alloc;
const kvvfsStorage = (zClass)=>
((115===wasm.getMemValue(zClass))
? sessionStorage : localStorage);
const kvvfsImpls = {
xRead: (zClass, zKey, zBuf, nBuf)=>{
const stack = pstack.pointer,
astack = wasm.scopedAllocPush();
try {
const zXKey = kvvfsMakeKey(zClass,zKey);
if(!zXKey) return -3;
const jKey = wasm.cstringToJs(zXKey);
const jV = kvvfsStorage(zClass).getItem(jKey);
if(!jV) return -1;
const nV = jV.length ;
if(nBuf<=0) return nV;
else if(1===nBuf){
wasm.setMemValue(zBuf, 0);
return nV;
}
const zV = wasm.scopedAllocCString(jV);
if(nBuf > nV + 1) nBuf = nV + 1;
|
︙ | | | ︙ | |
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|
wasm.scopedAllocPop(astack);
}
},
xWrite: (zClass, zKey, zData)=>{
const stack = pstack.pointer;
try {
const zXKey = kvvfsMakeKey(zClass,zKey);
if(!zXKey) return 1/*OOM*/;
const jKey = wasm.cstringToJs(zXKey);
kvvfsStorage(zClass).setItem(jKey, wasm.cstringToJs(zData));
return 0;
}catch(e){
console.error("kvstorageWrite()",e);
return capi.SQLITE_IOERR;
}finally{
pstack.restore(stack);
}
},
xDelete: (zClass, zKey)=>{
const stack = pstack.pointer;
try {
const zXKey = kvvfsMakeKey(zClass,zKey);
if(!zXKey) return 1/*OOM*/;
kvvfsStorage(zClass).removeItem(wasm.cstringToJs(zXKey));
return 0;
}catch(e){
console.error("kvstorageDelete()",e);
return capi.SQLITE_IOERR;
}finally{
pstack.restore(stack);
}
}
}/*kvvfsImpls*/;
for(let k of Object.keys(kvvfsImpls)){
kvvfsMethods[kvvfsMethods.memberKey(k)] =
wasm.installFunction(
kvvfsMethods.memberSignature(k),
kvvfsImpls[k]
);
}
}else{
/* Worker thread: unregister kvvfs to avoid it being used
for anything other than local/sessionStorage. It "can"
be used that way but it's not really intended to be. */
capi.sqlite3_vfs_unregister(pKvvfs);
}
}/*pKvvfs*/
});
/* END FILE: api/sqlite3-api-glue.js */
/* BEGIN FILE: ./bld/sqlite3-api-build-version.js */
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
sqlite3.version = {"libVersion": "3.40.0", "libVersionNumber": 3040000, "sourceId": "2022-10-27 14:28:15 a4d40f6346e7eb2a5239684dba86f297358122768a4d4bf6786b6028f430alt1","downloadVersion": 3400000};
});
/* END FILE: ./bld/sqlite3-api-build-version.js */
/* BEGIN FILE: api/sqlite3-api-oo1.js */
/*
2022-07-22
The author disclaims copyright to this source code. In place of a
legal notice, here is a blessing:
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
***********************************************************************
This file contains the so-called OO #1 API wrapper for the sqlite3
WASM build. It requires that sqlite3-api-glue.js has already run
and it installs its deliverable as self.sqlite3.oo1.
*/
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
const toss = (...args)=>{throw new Error(args.join(' '))};
const toss3 = (...args)=>{throw new sqlite3.SQLite3Error(...args)};
const capi = sqlite3.capi, wasm = capi.wasm, util = capi.util;
/* What follows is colloquially known as "OO API #1". It is a
binding of the sqlite3 API which is designed to be run within
the same thread (main or worker) as the one in which the
sqlite3 WASM binding was initialized. This wrapper cannot use
the sqlite3 binding if, e.g., the wrapper is in the main thread
and the sqlite3 API is in a worker. */
/**
In order to keep clients from manipulating, perhaps
inadvertently, the underlying pointer values of DB and Stmt
instances, we'll gate access to them via the `pointer` property
accessor and store their real values in this map. Keys = DB/Stmt
objects, values = pointer values. This also unifies how those are
accessed, for potential use downstream via custom
wasm.xWrap() function signatures which know how to extract
it.
*/
const __ptrMap = new WeakMap();
/**
Map of DB instances to objects, each object being a map of Stmt
wasm pointers to Stmt objects.
*/
const __stmtMap = new WeakMap();
/** If object opts has _its own_ property named p then that
property's value is returned, else dflt is returned. */
const getOwnOption = (opts, p, dflt)=>{
const d = Object.getOwnPropertyDescriptor(opts,p);
return d ? d.value : dflt;
};
// Documented in DB.checkRc()
const checkSqlite3Rc = function(dbPtr, sqliteResultCode){
if(sqliteResultCode){
if(dbPtr instanceof DB) dbPtr = dbPtr.pointer;
toss3(
"sqlite result code",sqliteResultCode+":",
(dbPtr
? capi.sqlite3_errmsg(dbPtr)
: capi.sqlite3_errstr(sqliteResultCode))
);
}
};
/**
sqlite3_trace_v2() callback which gets installed by the DB ctor
if its open-flags contain "t".
*/
const __dbTraceToConsole =
wasm.installFunction('i(ippp)', function(t,c,p,x){
if(capi.SQLITE_TRACE_STMT===t){
// x == SQL, p == sqlite3_stmt*
console.log("SQL TRACE #"+(++this.counter),
wasm.cstringToJs(x));
}
}.bind({counter: 0}));
/**
A map of sqlite3_vfs pointers to SQL code to run when the DB
constructor opens a database with the given VFS.
*/
const __vfsPostOpenSql = Object.create(null);
/**
A proxy for DB class constructors. It must be called with the
being-construct DB object as its "this". See the DB constructor
for the argument docs. This is split into a separate function
in order to enable simple creation of special-case DB constructors,
e.g. JsStorageDb and OpfsDb.
Expects to be passed a configuration object with the following
properties:
- `.filename`: the db filename. It may be a special name like ":memory:"
or "".
- `.flags`: as documented in the DB constructor.
- `.vfs`: as documented in the DB constructor.
It also accepts those as the first 3 arguments.
*/
const dbCtorHelper = function ctor(...args){
if(!ctor._name2vfs){
/**
Map special filenames which we handle here (instead of in C)
to some helpful metadata...
As of 2022-09-20, the C API supports the names :localStorage:
and :sessionStorage: for kvvfs. However, C code cannot
determine (without embedded JS code, e.g. via Emscripten's
EM_JS()) whether the kvvfs is legal in the current browser
context (namely the main UI thread). In order to help client
code fail early on, instead of it being delayed until they
try to read or write a kvvfs-backed db, we'll check for those
names here and throw if they're not legal in the current
context.
*/
ctor._name2vfs = Object.create(null);
const isWorkerThread = ('function'===typeof importScripts/*===running in worker thread*/)
? (n)=>toss3("The VFS for",n,"is only available in the main window thread.")
: false;
ctor._name2vfs[':localStorage:'] = {
vfs: 'kvvfs', filename: isWorkerThread || (()=>'local')
};
ctor._name2vfs[':sessionStorage:'] = {
vfs: 'kvvfs', filename: isWorkerThread || (()=>'session')
|
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|
wasm.scopedAllocPop(astack);
}
},
xWrite: (zClass, zKey, zData)=>{
const stack = pstack.pointer;
try {
const zXKey = kvvfsMakeKey(zClass,zKey);
if(!zXKey) return 1;
const jKey = wasm.cstringToJs(zXKey);
kvvfsStorage(zClass).setItem(jKey, wasm.cstringToJs(zData));
return 0;
}catch(e){
console.error("kvstorageWrite()",e);
return capi.SQLITE_IOERR;
}finally{
pstack.restore(stack);
}
},
xDelete: (zClass, zKey)=>{
const stack = pstack.pointer;
try {
const zXKey = kvvfsMakeKey(zClass,zKey);
if(!zXKey) return 1;
kvvfsStorage(zClass).removeItem(wasm.cstringToJs(zXKey));
return 0;
}catch(e){
console.error("kvstorageDelete()",e);
return capi.SQLITE_IOERR;
}finally{
pstack.restore(stack);
}
}
};
for(let k of Object.keys(kvvfsImpls)){
kvvfsMethods[kvvfsMethods.memberKey(k)] =
wasm.installFunction(
kvvfsMethods.memberSignature(k),
kvvfsImpls[k]
);
}
}else{
capi.sqlite3_vfs_unregister(pKvvfs);
}
}
});
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
sqlite3.version = {"libVersion": "3.40.0", "libVersionNumber": 3040000, "sourceId": "2022-10-27 14:28:15 a4d40f6346e7eb2a5239684dba86f297358122768a4d4bf6786b6028f430alt1","downloadVersion": 3400000};
});
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
const toss = (...args)=>{throw new Error(args.join(' '))};
const toss3 = (...args)=>{throw new sqlite3.SQLite3Error(...args)};
const capi = sqlite3.capi, wasm = capi.wasm, util = capi.util;
const __ptrMap = new WeakMap();
const __stmtMap = new WeakMap();
const getOwnOption = (opts, p, dflt)=>{
const d = Object.getOwnPropertyDescriptor(opts,p);
return d ? d.value : dflt;
};
const checkSqlite3Rc = function(dbPtr, sqliteResultCode){
if(sqliteResultCode){
if(dbPtr instanceof DB) dbPtr = dbPtr.pointer;
toss3(
"sqlite result code",sqliteResultCode+":",
(dbPtr
? capi.sqlite3_errmsg(dbPtr)
: capi.sqlite3_errstr(sqliteResultCode))
);
}
};
const __dbTraceToConsole =
wasm.installFunction('i(ippp)', function(t,c,p,x){
if(capi.SQLITE_TRACE_STMT===t){
console.log("SQL TRACE #"+(++this.counter),
wasm.cstringToJs(x));
}
}.bind({counter: 0}));
const __vfsPostOpenSql = Object.create(null);
const dbCtorHelper = function ctor(...args){
if(!ctor._name2vfs){
ctor._name2vfs = Object.create(null);
const isWorkerThread = ('function'===typeof importScripts)
? (n)=>toss3("The VFS for",n,"is only available in the main window thread.")
: false;
ctor._name2vfs[':localStorage:'] = {
vfs: 'kvvfs', filename: isWorkerThread || (()=>'local')
};
ctor._name2vfs[':sessionStorage:'] = {
vfs: 'kvvfs', filename: isWorkerThread || (()=>'session')
|
︙ | | | ︙ | |
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|
oflags |= capi.SQLITE_OPEN_CREATE | capi.SQLITE_OPEN_READWRITE;
}
if( flagsStr.indexOf('w')>=0 ) oflags |= capi.SQLITE_OPEN_READWRITE;
if( 0===oflags ) oflags |= capi.SQLITE_OPEN_READONLY;
oflags |= capi.SQLITE_OPEN_EXRESCODE;
const stack = wasm.pstack.pointer;
try {
const pPtr = wasm.pstack.allocPtr() /* output (sqlite3**) arg */;
let rc = capi.sqlite3_open_v2(fn, pPtr, oflags, vfsName || 0);
pDb = wasm.getPtrValue(pPtr);
checkSqlite3Rc(pDb, rc);
if(flagsStr.indexOf('t')>=0){
capi.sqlite3_trace_v2(pDb, capi.SQLITE_TRACE_STMT,
__dbTraceToConsole, 0);
}
// Check for per-VFS post-open SQL...
const pVfs = capi.sqlite3_js_db_vfs(pDb);
//console.warn("Opened db",fn,"with vfs",vfsName,pVfs);
if(!pVfs) toss3("Internal error: cannot get VFS for new db handle.");
const postInitSql = __vfsPostOpenSql[pVfs];
if(postInitSql){
rc = capi.sqlite3_exec(pDb, postInitSql, 0, 0, 0);
checkSqlite3Rc(pDb, rc);
}
}catch( e ){
if( pDb ) capi.sqlite3_close_v2(pDb);
throw e;
}finally{
wasm.pstack.restore(stack);
}
this.filename = fnJs;
__ptrMap.set(this, pDb);
__stmtMap.set(this, Object.create(null));
};
/**
Sets SQL which should be exec()'d on a DB instance after it is
opened with the given VFS pointer. This is intended only for use
by DB subclasses or sqlite3_vfs implementations.
*/
dbCtorHelper.setVfsPostOpenSql = function(pVfs, sql){
__vfsPostOpenSql[pVfs] = sql;
};
/**
A helper for DB constructors. It accepts either a single
config-style object or up to 3 arguments (filename, dbOpenFlags,
dbVfsName). It returns a new object containing:
{ filename: ..., flags: ..., vfs: ... }
If passed an object, any additional properties it has are copied
as-is into the new object.
*/
dbCtorHelper.normalizeArgs = function(filename=':memory:',flags = 'c',vfs = null){
const arg = {};
if(1===arguments.length && 'object'===typeof arguments[0]){
const x = arguments[0];
Object.keys(x).forEach((k)=>arg[k] = x[k]);
if(undefined===arg.flags) arg.flags = 'c';
if(undefined===arg.vfs) arg.vfs = null;
if(undefined===arg.filename) arg.filename = ':memory:';
}else{
arg.filename = filename;
arg.flags = flags;
arg.vfs = vfs;
}
return arg;
};
/**
The DB class provides a high-level OO wrapper around an sqlite3
db handle.
The given db filename must be resolvable using whatever
filesystem layer (virtual or otherwise) is set up for the default
sqlite3 VFS.
Note that the special sqlite3 db names ":memory:" and ""
(temporary db) have their normal special meanings here and need
not resolve to real filenames, but "" uses an on-storage
temporary database and requires that the VFS support that.
The second argument specifies the open/create mode for the
database. It must be string containing a sequence of letters (in
any order, but case sensitive) specifying the mode:
- "c": create if it does not exist, else fail if it does not
exist. Implies the "w" flag.
- "w": write. Implies "r": a db cannot be write-only.
- "r": read-only if neither "w" nor "c" are provided, else it
is ignored.
- "t": enable tracing of SQL executed on this database handle,
sending it to `console.log()`. To disable it later, call
`sqlite3.capi.sqlite3_trace_v2(thisDb.pointer, 0, 0, 0)`.
If "w" is not provided, the db is implicitly read-only, noting
that "rc" is meaningless
Any other letters are currently ignored. The default is
"c". These modes are ignored for the special ":memory:" and ""
names and _may_ be ignored altogether for certain VFSes.
The final argument is analogous to the final argument of
sqlite3_open_v2(): the name of an sqlite3 VFS. Pass a falsy value,
or none at all, to use the default. If passed a value, it must
be the string name of a VFS.
The constructor optionally (and preferably) takes its arguments
in the form of a single configuration object with the following
properties:
- `.filename`: database file name
- `.flags`: open-mode flags
- `.vfs`: the VFS fname
The `filename` and `vfs` arguments may be either JS strings or
C-strings allocated via WASM. `flags` is required to be a JS
string (because it's specific to this API, which is specific
to JS).
For purposes of passing a DB instance to C-style sqlite3
functions, the DB object's read-only `pointer` property holds its
`sqlite3*` pointer value. That property can also be used to check
whether this DB instance is still open.
In the main window thread, the filenames `":localStorage:"` and
`":sessionStorage:"` are special: they cause the db to use either
localStorage or sessionStorage for storing the database using
the kvvfs. If one of these names are used, they trump
any vfs name set in the arguments.
*/
const DB = function(...args){
dbCtorHelper.apply(this, args);
};
DB.dbCtorHelper = dbCtorHelper;
/**
Internal-use enum for mapping JS types to DB-bindable types.
These do not (and need not) line up with the SQLITE_type
values. All values in this enum must be truthy and distinct
but they need not be numbers.
*/
const BindTypes = {
null: 1,
number: 2,
string: 3,
boolean: 4,
blob: 5
};
BindTypes['undefined'] == BindTypes.null;
if(wasm.bigIntEnabled){
BindTypes.bigint = BindTypes.number;
}
/**
This class wraps sqlite3_stmt. Calling this constructor
directly will trigger an exception. Use DB.prepare() to create
new instances.
For purposes of passing a Stmt instance to C-style sqlite3
functions, its read-only `pointer` property holds its `sqlite3_stmt*`
pointer value.
Other non-function properties include:
- `db`: the DB object which created the statement.
- `columnCount`: the number of result columns in the query, or 0 for
queries which cannot return results.
- `parameterCount`: the number of bindable paramters in the query.
*/
const Stmt = function(){
if(BindTypes!==arguments[2]){
toss3("Do not call the Stmt constructor directly. Use DB.prepare().");
}
this.db = arguments[0];
__ptrMap.set(this, arguments[1]);
this.columnCount = capi.sqlite3_column_count(this.pointer);
this.parameterCount = capi.sqlite3_bind_parameter_count(this.pointer);
};
/** Throws if the given DB has been closed, else it is returned. */
const affirmDbOpen = function(db){
if(!db.pointer) toss3("DB has been closed.");
return db;
};
/** Throws if ndx is not an integer or if it is out of range
for stmt.columnCount, else returns stmt.
Reminder: this will also fail after the statement is finalized
but the resulting error will be about an out-of-bounds column
index rather than a statement-is-finalized error.
*/
const affirmColIndex = function(stmt,ndx){
if((ndx !== (ndx|0)) || ndx<0 || ndx>=stmt.columnCount){
toss3("Column index",ndx,"is out of range.");
}
return stmt;
};
/**
Expects to be passed the `arguments` object from DB.exec(). Does
the argument processing/validation, throws on error, and returns
a new object on success:
{ sql: the SQL, opt: optionsObj, cbArg: function}
The opt object is a normalized copy of any passed to this
function. The sql will be converted to a string if it is provided
in one of the supported non-string formats.
cbArg is only set if the opt.callback or opt.resultRows are set,
in which case it's a function which expects to be passed the
current Stmt and returns the callback argument of the type
indicated by the input arguments.
*/
const parseExecArgs = function(args){
const out = Object.create(null);
out.opt = Object.create(null);
switch(args.length){
case 1:
if('string'===typeof args[0] || util.isSQLableTypedArray(args[0])){
out.sql = args[0];
|
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|
oflags |= capi.SQLITE_OPEN_CREATE | capi.SQLITE_OPEN_READWRITE;
}
if( flagsStr.indexOf('w')>=0 ) oflags |= capi.SQLITE_OPEN_READWRITE;
if( 0===oflags ) oflags |= capi.SQLITE_OPEN_READONLY;
oflags |= capi.SQLITE_OPEN_EXRESCODE;
const stack = wasm.pstack.pointer;
try {
const pPtr = wasm.pstack.allocPtr() ;
let rc = capi.sqlite3_open_v2(fn, pPtr, oflags, vfsName || 0);
pDb = wasm.getPtrValue(pPtr);
checkSqlite3Rc(pDb, rc);
if(flagsStr.indexOf('t')>=0){
capi.sqlite3_trace_v2(pDb, capi.SQLITE_TRACE_STMT,
__dbTraceToConsole, 0);
}
const pVfs = capi.sqlite3_js_db_vfs(pDb);
if(!pVfs) toss3("Internal error: cannot get VFS for new db handle.");
const postInitSql = __vfsPostOpenSql[pVfs];
if(postInitSql){
rc = capi.sqlite3_exec(pDb, postInitSql, 0, 0, 0);
checkSqlite3Rc(pDb, rc);
}
}catch( e ){
if( pDb ) capi.sqlite3_close_v2(pDb);
throw e;
}finally{
wasm.pstack.restore(stack);
}
this.filename = fnJs;
__ptrMap.set(this, pDb);
__stmtMap.set(this, Object.create(null));
};
dbCtorHelper.setVfsPostOpenSql = function(pVfs, sql){
__vfsPostOpenSql[pVfs] = sql;
};
dbCtorHelper.normalizeArgs = function(filename=':memory:',flags = 'c',vfs = null){
const arg = {};
if(1===arguments.length && 'object'===typeof arguments[0]){
const x = arguments[0];
Object.keys(x).forEach((k)=>arg[k] = x[k]);
if(undefined===arg.flags) arg.flags = 'c';
if(undefined===arg.vfs) arg.vfs = null;
if(undefined===arg.filename) arg.filename = ':memory:';
}else{
arg.filename = filename;
arg.flags = flags;
arg.vfs = vfs;
}
return arg;
};
const DB = function(...args){
dbCtorHelper.apply(this, args);
};
DB.dbCtorHelper = dbCtorHelper;
const BindTypes = {
null: 1,
number: 2,
string: 3,
boolean: 4,
blob: 5
};
BindTypes['undefined'] == BindTypes.null;
if(wasm.bigIntEnabled){
BindTypes.bigint = BindTypes.number;
}
const Stmt = function(){
if(BindTypes!==arguments[2]){
toss3("Do not call the Stmt constructor directly. Use DB.prepare().");
}
this.db = arguments[0];
__ptrMap.set(this, arguments[1]);
this.columnCount = capi.sqlite3_column_count(this.pointer);
this.parameterCount = capi.sqlite3_bind_parameter_count(this.pointer);
};
const affirmDbOpen = function(db){
if(!db.pointer) toss3("DB has been closed.");
return db;
};
const affirmColIndex = function(stmt,ndx){
if((ndx !== (ndx|0)) || ndx<0 || ndx>=stmt.columnCount){
toss3("Column index",ndx,"is out of range.");
}
return stmt;
};
const parseExecArgs = function(args){
const out = Object.create(null);
out.opt = Object.create(null);
switch(args.length){
case 1:
if('string'===typeof args[0] || util.isSQLableTypedArray(args[0])){
out.sql = args[0];
|
︙ | | | ︙ | |
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|
out.cbArg = (stmt)=>stmt;
break;
default:
if(util.isInt32(out.opt.rowMode)){
out.cbArg = (stmt)=>stmt.get(out.opt.rowMode);
break;
}else if('string'===typeof out.opt.rowMode && out.opt.rowMode.length>1){
/* "$X", ":X", and "@X" fetch column named "X" (case-sensitive!) */
const prefix = out.opt.rowMode[0];
if(':'===prefix || '@'===prefix || '$'===prefix){
out.cbArg = function(stmt){
const rc = stmt.get(this.obj)[this.colName];
return (undefined===rc) ? toss3("exec(): unknown result column:",this.colName) : rc;
}.bind({
obj:Object.create(null),
colName: out.opt.rowMode.substr(1)
});
break;
}
}
toss3("Invalid rowMode:",out.opt.rowMode);
}
}
return out;
};
/**
Expects to be given a DB instance or an `sqlite3*` pointer (may
be null) and an sqlite3 API result code. If the result code is
not falsy, this function throws an SQLite3Error with an error
message from sqlite3_errmsg(), using dbPtr as the db handle, or
sqlite3_errstr() if dbPtr is falsy. Note that if it's passed a
non-error code like SQLITE_ROW or SQLITE_DONE, it will still
throw but the error string might be "Not an error." The various
non-0 non-error codes need to be checked for in
client code where they are expected.
*/
DB.checkRc = checkSqlite3Rc;
DB.prototype = {
/** Returns true if this db handle is open, else false. */
isOpen: function(){
return !!this.pointer;
},
/** Throws if this given DB has been closed, else returns `this`. */
affirmOpen: function(){
return affirmDbOpen(this);
},
/**
Finalizes all open statements and closes this database
connection. This is a no-op if the db has already been
closed. After calling close(), `this.pointer` will resolve to
`undefined`, so that can be used to check whether the db
instance is still opened.
If this.onclose.before is a function then it is called before
any close-related cleanup.
If this.onclose.after is a function then it is called after the
db is closed but before auxiliary state like this.filename is
cleared.
Both onclose handlers are passed this object. If this db is not
opened, neither of the handlers are called. Any exceptions the
handlers throw are ignored because "destructors must not
throw."
Note that garbage collection of a db handle, if it happens at
all, will never trigger close(), so onclose handlers are not a
reliable way to implement close-time cleanup or maintenance of
a db.
*/
close: function(){
if(this.pointer){
if(this.onclose && (this.onclose.before instanceof Function)){
try{this.onclose.before(this)}
catch(e){/*ignore*/}
}
const pDb = this.pointer;
Object.keys(__stmtMap.get(this)).forEach((k,s)=>{
if(s && s.pointer) s.finalize();
});
__ptrMap.delete(this);
__stmtMap.delete(this);
capi.sqlite3_close_v2(pDb);
if(this.onclose && (this.onclose.after instanceof Function)){
try{this.onclose.after(this)}
catch(e){/*ignore*/}
}
delete this.filename;
}
},
/**
Returns the number of changes, as per sqlite3_changes()
(if the first argument is false) or sqlite3_total_changes()
(if it's true). If the 2nd argument is true, it uses
sqlite3_changes64() or sqlite3_total_changes64(), which
will trigger an exception if this build does not have
BigInt support enabled.
*/
changes: function(total=false,sixtyFour=false){
const p = affirmDbOpen(this).pointer;
if(total){
return sixtyFour
? capi.sqlite3_total_changes64(p)
: capi.sqlite3_total_changes(p);
}else{
return sixtyFour
? capi.sqlite3_changes64(p)
: capi.sqlite3_changes(p);
}
},
/**
Similar to the this.filename but returns the
sqlite3_db_filename() value for the given database name,
defaulting to "main". The argument may be either a JS string
or a pointer to a WASM-allocated C-string.
*/
dbFilename: function(dbName='main'){
return capi.sqlite3_db_filename(affirmDbOpen(this).pointer, dbName);
},
/**
Returns the name of the given 0-based db number, as documented
for sqlite3_db_name().
*/
dbName: function(dbNumber=0){
return capi.sqlite3_db_name(affirmDbOpen(this).pointer, dbNumber);
},
/**
Compiles the given SQL and returns a prepared Stmt. This is
the only way to create new Stmt objects. Throws on error.
The given SQL must be a string, a Uint8Array holding SQL, a
WASM pointer to memory holding the NUL-terminated SQL string,
or an array of strings. In the latter case, the array is
concatenated together, with no separators, to form the SQL
string (arrays are often a convenient way to formulate long
statements). If the SQL contains no statements, an
SQLite3Error is thrown.
Design note: the C API permits empty SQL, reporting it as a 0
result code and a NULL stmt pointer. Supporting that case here
would cause extra work for all clients: any use of the Stmt API
on such a statement will necessarily throw, so clients would be
required to check `stmt.pointer` after calling `prepare()` in
order to determine whether the Stmt instance is empty or not.
Long-time practice (with other sqlite3 script bindings)
suggests that the empty-prepare case is sufficiently rare that
supporting it here would simply hurt overall usability.
*/
prepare: function(sql){
affirmDbOpen(this);
const stack = wasm.pstack.pointer;
let ppStmt, pStmt;
try{
ppStmt = wasm.pstack.alloc(8)/* output (sqlite3_stmt**) arg */;
DB.checkRc(this, capi.sqlite3_prepare_v2(this.pointer, sql, -1, ppStmt, null));
pStmt = wasm.getPtrValue(ppStmt);
}
finally {
wasm.pstack.restore(stack);
}
if(!pStmt) toss3("Cannot prepare empty SQL.");
const stmt = new Stmt(this, pStmt, BindTypes);
__stmtMap.get(this)[pStmt] = stmt;
return stmt;
},
/**
Executes one or more SQL statements in the form of a single
string. Its arguments must be either (sql,optionsObject) or
(optionsObject). In the latter case, optionsObject.sql
must contain the SQL to execute. Returns this
object. Throws on error.
If no SQL is provided, or a non-string is provided, an
exception is triggered. Empty SQL, on the other hand, is
simply a no-op.
The optional options object may contain any of the following
properties:
- `.sql` = the SQL to run (unless it's provided as the first
argument). This must be of type string, Uint8Array, or an array
of strings. In the latter case they're concatenated together
as-is, _with no separator_ between elements, before evaluation.
The array form is often simpler for long hand-written queries.
- `.bind` = a single value valid as an argument for
Stmt.bind(). This is _only_ applied to the _first_ non-empty
statement in the SQL which has any bindable parameters. (Empty
statements are skipped entirely.)
- `.saveSql` = an optional array. If set, the SQL of each
executed statement is appended to this array before the
statement is executed (but after it is prepared - we don't have
the string until after that). Empty SQL statements are elided.
==================================================================
The following options apply _only_ to the _first_ statement
which has a non-zero result column count, regardless of whether
the statement actually produces any result rows.
==================================================================
- `.columnNames`: if this is an array, the column names of the
result set are stored in this array before the callback (if
any) is triggered (regardless of whether the query produces any
result rows). If no statement has result columns, this value is
unchanged. Achtung: an SQL result may have multiple columns
with identical names.
- `.callback` = a function which gets called for each row of
the result set, but only if that statement has any result
_rows_. The callback's "this" is the options object, noting
that this function synthesizes one if the caller does not pass
one to exec(). The second argument passed to the callback is
always the current Stmt object, as it's needed if the caller
wants to fetch the column names or some such (noting that they
could also be fetched via `this.columnNames`, if the client
provides the `columnNames` option).
ACHTUNG: The callback MUST NOT modify the Stmt object. Calling
any of the Stmt.get() variants, Stmt.getColumnName(), or
similar, is legal, but calling step() or finalize() is
not. Member methods which are illegal in this context will
trigger an exception.
The first argument passed to the callback defaults to an array of
values from the current result row but may be changed with ...
- `.rowMode` = specifies the type of he callback's first argument.
It may be any of...
A) A string describing what type of argument should be passed
as the first argument to the callback:
A.1) `'array'` (the default) causes the results of
`stmt.get([])` to be passed to the `callback` and/or appended
to `resultRows`.
A.2) `'object'` causes the results of
`stmt.get(Object.create(null))` to be passed to the
`callback` and/or appended to `resultRows`. Achtung: an SQL
result may have multiple columns with identical names. In
that case, the right-most column will be the one set in this
object!
A.3) `'stmt'` causes the current Stmt to be passed to the
callback, but this mode will trigger an exception if
`resultRows` is an array because appending the statement to
the array would be downright unhelpful.
B) An integer, indicating a zero-based column in the result
row. Only that one single value will be passed on.
C) A string with a minimum length of 2 and leading character of
':', '$', or '@' will fetch the row as an object, extract that
one field, and pass that field's value to the callback. Note
that these keys are case-sensitive so must match the case used
in the SQL. e.g. `"select a A from t"` with a `rowMode` of
`'$A'` would work but `'$a'` would not. A reference to a column
not in the result set will trigger an exception on the first
row (as the check is not performed until rows are fetched).
Note also that `$` is a legal identifier character in JS so
need not be quoted. (Design note: those 3 characters were
chosen because they are the characters support for naming bound
parameters.)
Any other `rowMode` value triggers an exception.
- `.resultRows`: if this is an array, it functions similarly to
the `callback` option: each row of the result set (if any),
with the exception that the `rowMode` 'stmt' is not legal. It
is legal to use both `resultRows` and `callback`, but
`resultRows` is likely much simpler to use for small data sets
and can be used over a WebWorker-style message interface.
exec() throws if `resultRows` is set and `rowMode` is 'stmt'.
Potential TODOs:
- `.bind`: permit an array of arrays/objects to bind. The first
sub-array would act on the first statement which has bindable
parameters (as it does now). The 2nd would act on the next such
statement, etc.
- `.callback` and `.resultRows`: permit an array entries with
semantics similar to those described for `.bind` above.
*/
exec: function(/*(sql [,obj]) || (obj)*/){
affirmDbOpen(this);
const wasm = capi.wasm;
const arg = parseExecArgs(arguments);
if(!arg.sql){
return (''===arg.sql) ? this : toss3("exec() requires an SQL string.");
}
const opt = arg.opt;
const callback = opt.callback;
let resultRows = (Array.isArray(opt.resultRows)
? opt.resultRows : undefined);
let stmt;
let bind = opt.bind;
let evalFirstResult = !!(arg.cbArg || opt.columnNames) /* true to evaluate the first result-returning query */;
const stack = wasm.scopedAllocPush();
try{
const isTA = util.isSQLableTypedArray(arg.sql)
/* Optimization: if the SQL is a TypedArray we can save some string
conversion costs. */;
/* Allocate the two output pointers (ppStmt, pzTail) and heap
space for the SQL (pSql). When prepare_v2() returns, pzTail
will point to somewhere in pSql. */
let sqlByteLen = isTA ? arg.sql.byteLength : wasm.jstrlen(arg.sql);
const ppStmt = wasm.scopedAlloc(/* output (sqlite3_stmt**) arg and pzTail */
(2 * wasm.ptrSizeof)
+ (sqlByteLen + 1/* SQL + NUL */));
const pzTail = ppStmt + wasm.ptrSizeof /* final arg to sqlite3_prepare_v2() */;
let pSql = pzTail + wasm.ptrSizeof;
const pSqlEnd = pSql + sqlByteLen;
if(isTA) wasm.heap8().set(arg.sql, pSql);
else wasm.jstrcpy(arg.sql, wasm.heap8(), pSql, sqlByteLen, false);
wasm.setMemValue(pSql + sqlByteLen, 0/*NUL terminator*/);
while(pSql && wasm.getMemValue(pSql, 'i8')
/* Maintenance reminder:^^^ _must_ be 'i8' or else we
will very likely cause an endless loop. What that's
doing is checking for a terminating NUL byte. If we
use i32 or similar then we read 4 bytes, read stuff
around the NUL terminator, and get stuck in and
endless loop at the end of the SQL, endlessly
re-preparing an empty statement. */ ){
wasm.setPtrValue(ppStmt, 0);
wasm.setPtrValue(pzTail, 0);
DB.checkRc(this, capi.sqlite3_prepare_v3(
this.pointer, pSql, sqlByteLen, 0, ppStmt, pzTail
));
const pStmt = wasm.getPtrValue(ppStmt);
pSql = wasm.getPtrValue(pzTail);
sqlByteLen = pSqlEnd - pSql;
if(!pStmt) continue;
if(Array.isArray(opt.saveSql)){
opt.saveSql.push(capi.sqlite3_sql(pStmt).trim());
}
stmt = new Stmt(this, pStmt, BindTypes);
if(bind && stmt.parameterCount){
stmt.bind(bind);
bind = null;
}
if(evalFirstResult && stmt.columnCount){
/* Only forward SELECT results for the FIRST query
in the SQL which potentially has them. */
evalFirstResult = false;
if(Array.isArray(opt.columnNames)){
stmt.getColumnNames(opt.columnNames);
}
while(!!arg.cbArg && stmt.step()){
stmt._isLocked = true;
const row = arg.cbArg(stmt);
if(resultRows) resultRows.push(row);
if(callback) callback.apply(opt,[row,stmt]);
stmt._isLocked = false;
}
}else{
stmt.step();
}
stmt.finalize();
stmt = null;
}
}/*catch(e){
console.warn("DB.exec() is propagating exception",opt,e);
throw e;
}*/finally{
if(stmt){
delete stmt._isLocked;
stmt.finalize();
}
wasm.scopedAllocPop(stack);
}
return this;
}/*exec()*/,
/**
Creates a new scalar UDF (User-Defined Function) which is
accessible via SQL code. This function may be called in any
of the following forms:
- (name, function)
- (name, function, optionsObject)
- (name, optionsObject)
- (optionsObject)
In the final two cases, the function must be defined as the
`callback` property of the options object (optionally called
`xFunc` to align with the C API documentation). In the final
case, the function's name must be the 'name' property.
The first two call forms can only be used for creating scalar
functions. Creating an aggregate or window function requires
the options-object form (see below for details).
UDFs cannot currently be removed from a DB handle after they're
added. More correctly, they can be removed as documented for
sqlite3_create_function_v2(), but doing so will "leak" the
JS-created WASM binding of those functions.
On success, returns this object. Throws on error.
When called from SQL arguments to the UDF, and its result,
will be converted between JS and SQL with as much fidelity as
is feasible, triggering an exception if a type conversion
cannot be determined. The docs for sqlite3_create_function_v2()
describe the conversions in more detail.
The values set in the options object differ for scalar and
aggregate functions:
- Scalar: set the `xFunc` function-type property to the UDF
function.
- Aggregate: set the `xStep` and `xFinal` function-type
properties to the "step" and "final" callbacks for the
aggregate. Do not set the `xFunc` property.
- Window: set the `xStep`, `xFinal`, `xValue`, and `xInverse`
function-type properties. Do not set the `xFunc` property.
The options object may optionally have an `xDestroy`
function-type property, as per sqlite3_create_function_v2().
Its argument will be the WASM-pointer-type value of the `pApp`
property, and this function will throw if `pApp` is defined but
is not null, undefined, or a numeric (WASM pointer)
value. i.e. `pApp`, if set, must be value suitable for use as a
WASM pointer argument, noting that `null` or `undefined` will
translate to 0 for that purpose.
The options object may contain flags to modify how
the function is defined:
- `arity`: the number of arguments which SQL calls to this
function expect or require. The default value is `xFunc.length`
or `xStep.length` (i.e. the number of declared parameters it
has) **MINUS 1** (see below for why). As a special case, if the
`length` is 0, its arity is also 0 instead of -1. A negative
arity value means that the function is variadic and may accept
any number of arguments, up to sqlite3's compile-time
limits. sqlite3 will enforce the argument count if is zero or
greater. The callback always receives a pointer to an
`sqlite3_context` object as its first argument. Any arguments
after that are from SQL code. The leading context argument does
_not_ count towards the function's arity. See the docs for
sqlite3.capi.sqlite3_create_function_v2() for why that argument
is needed in the interface.
The following options-object properties correspond to flags
documented at:
https://sqlite.org/c3ref/create_function.html
- `deterministic` = sqlite3.capi.SQLITE_DETERMINISTIC
- `directOnly` = sqlite3.capi.SQLITE_DIRECTONLY
- `innocuous` = sqlite3.capi.SQLITE_INNOCUOUS
Sidebar: the ability to add new WASM-accessible functions to
the runtime requires that the WASM build is compiled with the
equivalent functionality as that provided by Emscripten's
`-sALLOW_TABLE_GROWTH` flag.
*/
createFunction: function f(name, xFunc, opt){
const isFunc = (f)=>(f instanceof Function);
switch(arguments.length){
case 1: /* (optionsObject) */
opt = name;
name = opt.name;
xFunc = opt.xFunc || 0;
break;
case 2: /* (name, callback|optionsObject) */
if(!isFunc(xFunc)){
opt = xFunc;
xFunc = opt.xFunc || 0;
}
break;
case 3: /* name, xFunc, opt */
break;
default: break;
}
if(!opt) opt = {};
if('string' !== typeof name){
toss3("Invalid arguments: missing function name.");
}
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out.cbArg = (stmt)=>stmt;
break;
default:
if(util.isInt32(out.opt.rowMode)){
out.cbArg = (stmt)=>stmt.get(out.opt.rowMode);
break;
}else if('string'===typeof out.opt.rowMode && out.opt.rowMode.length>1){
const prefix = out.opt.rowMode[0];
if(':'===prefix || '@'===prefix || '$'===prefix){
out.cbArg = function(stmt){
const rc = stmt.get(this.obj)[this.colName];
return (undefined===rc) ? toss3("exec(): unknown result column:",this.colName) : rc;
}.bind({
obj:Object.create(null),
colName: out.opt.rowMode.substr(1)
});
break;
}
}
toss3("Invalid rowMode:",out.opt.rowMode);
}
}
return out;
};
DB.checkRc = checkSqlite3Rc;
DB.prototype = {
isOpen: function(){
return !!this.pointer;
},
affirmOpen: function(){
return affirmDbOpen(this);
},
close: function(){
if(this.pointer){
if(this.onclose && (this.onclose.before instanceof Function)){
try{this.onclose.before(this)}
catch(e){}
}
const pDb = this.pointer;
Object.keys(__stmtMap.get(this)).forEach((k,s)=>{
if(s && s.pointer) s.finalize();
});
__ptrMap.delete(this);
__stmtMap.delete(this);
capi.sqlite3_close_v2(pDb);
if(this.onclose && (this.onclose.after instanceof Function)){
try{this.onclose.after(this)}
catch(e){}
}
delete this.filename;
}
},
changes: function(total=false,sixtyFour=false){
const p = affirmDbOpen(this).pointer;
if(total){
return sixtyFour
? capi.sqlite3_total_changes64(p)
: capi.sqlite3_total_changes(p);
}else{
return sixtyFour
? capi.sqlite3_changes64(p)
: capi.sqlite3_changes(p);
}
},
dbFilename: function(dbName='main'){
return capi.sqlite3_db_filename(affirmDbOpen(this).pointer, dbName);
},
dbName: function(dbNumber=0){
return capi.sqlite3_db_name(affirmDbOpen(this).pointer, dbNumber);
},
prepare: function(sql){
affirmDbOpen(this);
const stack = wasm.pstack.pointer;
let ppStmt, pStmt;
try{
ppStmt = wasm.pstack.alloc(8);
DB.checkRc(this, capi.sqlite3_prepare_v2(this.pointer, sql, -1, ppStmt, null));
pStmt = wasm.getPtrValue(ppStmt);
}
finally {
wasm.pstack.restore(stack);
}
if(!pStmt) toss3("Cannot prepare empty SQL.");
const stmt = new Stmt(this, pStmt, BindTypes);
__stmtMap.get(this)[pStmt] = stmt;
return stmt;
},
exec: function(){
affirmDbOpen(this);
const wasm = capi.wasm;
const arg = parseExecArgs(arguments);
if(!arg.sql){
return (''===arg.sql) ? this : toss3("exec() requires an SQL string.");
}
const opt = arg.opt;
const callback = opt.callback;
let resultRows = (Array.isArray(opt.resultRows)
? opt.resultRows : undefined);
let stmt;
let bind = opt.bind;
let evalFirstResult = !!(arg.cbArg || opt.columnNames) ;
const stack = wasm.scopedAllocPush();
try{
const isTA = util.isSQLableTypedArray(arg.sql)
;
let sqlByteLen = isTA ? arg.sql.byteLength : wasm.jstrlen(arg.sql);
const ppStmt = wasm.scopedAlloc(
(2 * wasm.ptrSizeof)
+ (sqlByteLen + 1));
const pzTail = ppStmt + wasm.ptrSizeof ;
let pSql = pzTail + wasm.ptrSizeof;
const pSqlEnd = pSql + sqlByteLen;
if(isTA) wasm.heap8().set(arg.sql, pSql);
else wasm.jstrcpy(arg.sql, wasm.heap8(), pSql, sqlByteLen, false);
wasm.setMemValue(pSql + sqlByteLen, 0);
while(pSql && wasm.getMemValue(pSql, 'i8')
){
wasm.setPtrValue(ppStmt, 0);
wasm.setPtrValue(pzTail, 0);
DB.checkRc(this, capi.sqlite3_prepare_v3(
this.pointer, pSql, sqlByteLen, 0, ppStmt, pzTail
));
const pStmt = wasm.getPtrValue(ppStmt);
pSql = wasm.getPtrValue(pzTail);
sqlByteLen = pSqlEnd - pSql;
if(!pStmt) continue;
if(Array.isArray(opt.saveSql)){
opt.saveSql.push(capi.sqlite3_sql(pStmt).trim());
}
stmt = new Stmt(this, pStmt, BindTypes);
if(bind && stmt.parameterCount){
stmt.bind(bind);
bind = null;
}
if(evalFirstResult && stmt.columnCount){
evalFirstResult = false;
if(Array.isArray(opt.columnNames)){
stmt.getColumnNames(opt.columnNames);
}
while(!!arg.cbArg && stmt.step()){
stmt._isLocked = true;
const row = arg.cbArg(stmt);
if(resultRows) resultRows.push(row);
if(callback) callback.apply(opt,[row,stmt]);
stmt._isLocked = false;
}
}else{
stmt.step();
}
stmt.finalize();
stmt = null;
}
}finally{
if(stmt){
delete stmt._isLocked;
stmt.finalize();
}
wasm.scopedAllocPop(stack);
}
return this;
},
createFunction: function f(name, xFunc, opt){
const isFunc = (f)=>(f instanceof Function);
switch(arguments.length){
case 1:
opt = name;
name = opt.name;
xFunc = opt.xFunc || 0;
break;
case 2:
if(!isFunc(xFunc)){
opt = xFunc;
xFunc = opt.xFunc || 0;
}
break;
case 3:
break;
default: break;
}
if(!opt) opt = {};
if('string' !== typeof name){
toss3("Invalid arguments: missing function name.");
}
|
︙ | | | ︙ | |
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10483
10484
10485
10486
10487
10488
10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
10504
10505
10506
10507
10508
10509
10510
10511
10512
10513
10514
10515
10516
10517
10518
10519
10520
10521
10522
10523
10524
10525
10526
10527
10528
10529
10530
10531
10532
10533
10534
10535
10536
10537
10538
10539
10540
10541
10542
10543
10544
10545
10546
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563
10564
10565
10566
10567
10568
10569
10570
10571
10572
10573
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585
10586
10587
10588
10589
10590
10591
10592
10593
10594
|
(('number'!==typeof pApp) || !capi.util.isInt32(pApp))){
toss3("Invalid value for pApp property. Must be a legal WASM pointer value.");
}
const xDestroy = opt.xDestroy || 0;
if(xDestroy && !isFunc(xDestroy)){
toss3("xDestroy property must be a function.");
}
let fFlags = 0 /*flags for sqlite3_create_function_v2()*/;
if(getOwnOption(opt, 'deterministic')) fFlags |= capi.SQLITE_DETERMINISTIC;
if(getOwnOption(opt, 'directOnly')) fFlags |= capi.SQLITE_DIRECTONLY;
if(getOwnOption(opt, 'innocuous')) fFlags |= capi.SQLITE_INNOCUOUS;
name = name.toLowerCase();
const xArity = xFunc || xStep;
const arity = getOwnOption(opt, 'arity');
const arityArg = ('number'===typeof arity
? arity
: (xArity.length ? xArity.length-1/*for pCtx arg*/ : 0));
let rc;
if( isWindow ){
rc = capi.sqlite3_create_window_function(
this.pointer, name, arityArg,
capi.SQLITE_UTF8 | fFlags, pApp || 0,
xStep, xFinal, xValue, xInverse, xDestroy);
}else{
rc = capi.sqlite3_create_function_v2(
this.pointer, name, arityArg,
capi.SQLITE_UTF8 | fFlags, pApp || 0,
xFunc, xStep, xFinal, xDestroy);
}
DB.checkRc(this, rc);
return this;
}/*createFunction()*/,
/**
Prepares the given SQL, step()s it one time, and returns
the value of the first result column. If it has no results,
undefined is returned.
If passed a second argument, it is treated like an argument
to Stmt.bind(), so may be any type supported by that
function. Passing the undefined value is the same as passing
no value, which is useful when...
If passed a 3rd argument, it is expected to be one of the
SQLITE_{typename} constants. Passing the undefined value is
the same as not passing a value.
Throws on error (e.g. malformed SQL).
*/
selectValue: function(sql,bind,asType){
let stmt, rc;
try {
stmt = this.prepare(sql).bind(bind);
if(stmt.step()) rc = stmt.get(0,asType);
}finally{
if(stmt) stmt.finalize();
}
return rc;
},
/**
Returns the number of currently-opened Stmt handles for this db
handle, or 0 if this DB instance is closed.
*/
openStatementCount: function(){
return this.pointer ? Object.keys(__stmtMap.get(this)).length : 0;
},
/**
Starts a transaction, calls the given callback, and then either
rolls back or commits the savepoint, depending on whether the
callback throws. The callback is passed this db object as its
only argument. On success, returns the result of the
callback. Throws on error.
Note that transactions may not be nested, so this will throw if
it is called recursively. For nested transactions, use the
savepoint() method or manually manage SAVEPOINTs using exec().
*/
transaction: function(callback){
affirmDbOpen(this).exec("BEGIN");
try {
const rc = callback(this);
this.exec("COMMIT");
return rc;
}catch(e){
this.exec("ROLLBACK");
throw e;
}
},
/**
This works similarly to transaction() but uses sqlite3's SAVEPOINT
feature. This function starts a savepoint (with an unspecified name)
and calls the given callback function, passing it this db object.
If the callback returns, the savepoint is released (committed). If
the callback throws, the savepoint is rolled back. If it does not
throw, it returns the result of the callback.
*/
savepoint: function(callback){
affirmDbOpen(this).exec("SAVEPOINT oo1");
try {
const rc = callback(this);
this.exec("RELEASE oo1");
return rc;
}catch(e){
this.exec("ROLLBACK to SAVEPOINT oo1; RELEASE SAVEPOINT oo1");
throw e;
}
}
}/*DB.prototype*/;
/** Throws if the given Stmt has been finalized, else stmt is
returned. */
const affirmStmtOpen = function(stmt){
if(!stmt.pointer) toss3("Stmt has been closed.");
return stmt;
};
/** Returns an opaque truthy value from the BindTypes
enum if v's type is a valid bindable type, else
returns a falsy value. As a special case, a value of
undefined is treated as a bind type of null. */
const isSupportedBindType = function(v){
let t = BindTypes[(null===v||undefined===v) ? 'null' : typeof v];
switch(t){
case BindTypes.boolean:
case BindTypes.null:
case BindTypes.number:
case BindTypes.string:
return t;
case BindTypes.bigint:
if(wasm.bigIntEnabled) return t;
/* else fall through */
default:
//console.log("isSupportedBindType",t,v);
return util.isBindableTypedArray(v) ? BindTypes.blob : undefined;
}
};
/**
If isSupportedBindType(v) returns a truthy value, this
function returns that value, else it throws.
*/
const affirmSupportedBindType = function(v){
//console.log('affirmSupportedBindType',v);
return isSupportedBindType(v) || toss3("Unsupported bind() argument type:",typeof v);
};
/**
If key is a number and within range of stmt's bound parameter
count, key is returned.
If key is not a number then it is checked against named
parameters. If a match is found, its index is returned.
Else it throws.
*/
const affirmParamIndex = function(stmt,key){
const n = ('number'===typeof key)
? key : capi.sqlite3_bind_parameter_index(stmt.pointer, key);
if(0===n || !util.isInt32(n)){
toss3("Invalid bind() parameter name: "+key);
}
else if(n<1 || n>stmt.parameterCount) toss3("Bind index",key,"is out of range.");
return n;
};
/**
If stmt._isLocked is truthy, this throws an exception
complaining that the 2nd argument (an operation name,
e.g. "bind()") is not legal while the statement is "locked".
Locking happens before an exec()-like callback is passed a
statement, to ensure that the callback does not mutate or
finalize the statement. If it does not throw, it returns stmt.
*/
const affirmUnlocked = function(stmt,currentOpName){
if(stmt._isLocked){
toss3("Operation is illegal when statement is locked:",currentOpName);
}
return stmt;
};
/**
Binds a single bound parameter value on the given stmt at the
given index (numeric or named) using the given bindType (see
the BindTypes enum) and value. Throws on error. Returns stmt on
success.
*/
const bindOne = function f(stmt,ndx,bindType,val){
affirmUnlocked(stmt, 'bind()');
if(!f._){
f._tooBigInt = (v)=>toss3(
"BigInt value is too big to store without precision loss:", v
);
/* Reminder: when not in BigInt mode, it's impossible for
JS to represent a number out of the range we can bind,
so we have no range checking. */
f._ = {
string: function(stmt, ndx, val, asBlob){
if(1){
/* _Hypothetically_ more efficient than the impl in the 'else' block. */
const stack = wasm.scopedAllocPush();
try{
const n = wasm.jstrlen(val);
const pStr = wasm.scopedAlloc(n);
wasm.jstrcpy(val, wasm.heap8u(), pStr, n, false);
const f = asBlob ? capi.sqlite3_bind_blob : capi.sqlite3_bind_text;
return f(stmt.pointer, ndx, pStr, n, capi.SQLITE_TRANSIENT);
|
|
|
<
<
<
<
<
|
<
<
<
<
|
<
<
<
<
<
<
|
<
<
<
<
<
<
<
<
<
|
<
<
<
<
|
<
<
<
<
<
<
<
|
|
<
|
<
<
<
|
|
|
<
<
<
|
<
<
<
|
<
<
<
<
<
|
<
<
<
<
<
<
<
|
<
<
<
<
<
|
<
<
|
|
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
|
(('number'!==typeof pApp) || !capi.util.isInt32(pApp))){
toss3("Invalid value for pApp property. Must be a legal WASM pointer value.");
}
const xDestroy = opt.xDestroy || 0;
if(xDestroy && !isFunc(xDestroy)){
toss3("xDestroy property must be a function.");
}
let fFlags = 0 ;
if(getOwnOption(opt, 'deterministic')) fFlags |= capi.SQLITE_DETERMINISTIC;
if(getOwnOption(opt, 'directOnly')) fFlags |= capi.SQLITE_DIRECTONLY;
if(getOwnOption(opt, 'innocuous')) fFlags |= capi.SQLITE_INNOCUOUS;
name = name.toLowerCase();
const xArity = xFunc || xStep;
const arity = getOwnOption(opt, 'arity');
const arityArg = ('number'===typeof arity
? arity
: (xArity.length ? xArity.length-1 : 0));
let rc;
if( isWindow ){
rc = capi.sqlite3_create_window_function(
this.pointer, name, arityArg,
capi.SQLITE_UTF8 | fFlags, pApp || 0,
xStep, xFinal, xValue, xInverse, xDestroy);
}else{
rc = capi.sqlite3_create_function_v2(
this.pointer, name, arityArg,
capi.SQLITE_UTF8 | fFlags, pApp || 0,
xFunc, xStep, xFinal, xDestroy);
}
DB.checkRc(this, rc);
return this;
},
selectValue: function(sql,bind,asType){
let stmt, rc;
try {
stmt = this.prepare(sql).bind(bind);
if(stmt.step()) rc = stmt.get(0,asType);
}finally{
if(stmt) stmt.finalize();
}
return rc;
},
openStatementCount: function(){
return this.pointer ? Object.keys(__stmtMap.get(this)).length : 0;
},
transaction: function(callback){
affirmDbOpen(this).exec("BEGIN");
try {
const rc = callback(this);
this.exec("COMMIT");
return rc;
}catch(e){
this.exec("ROLLBACK");
throw e;
}
},
savepoint: function(callback){
affirmDbOpen(this).exec("SAVEPOINT oo1");
try {
const rc = callback(this);
this.exec("RELEASE oo1");
return rc;
}catch(e){
this.exec("ROLLBACK to SAVEPOINT oo1; RELEASE SAVEPOINT oo1");
throw e;
}
}
};
const affirmStmtOpen = function(stmt){
if(!stmt.pointer) toss3("Stmt has been closed.");
return stmt;
};
const isSupportedBindType = function(v){
let t = BindTypes[(null===v||undefined===v) ? 'null' : typeof v];
switch(t){
case BindTypes.boolean:
case BindTypes.null:
case BindTypes.number:
case BindTypes.string:
return t;
case BindTypes.bigint:
if(wasm.bigIntEnabled) return t;
default:
return util.isBindableTypedArray(v) ? BindTypes.blob : undefined;
}
};
const affirmSupportedBindType = function(v){
return isSupportedBindType(v) || toss3("Unsupported bind() argument type:",typeof v);
};
const affirmParamIndex = function(stmt,key){
const n = ('number'===typeof key)
? key : capi.sqlite3_bind_parameter_index(stmt.pointer, key);
if(0===n || !util.isInt32(n)){
toss3("Invalid bind() parameter name: "+key);
}
else if(n<1 || n>stmt.parameterCount) toss3("Bind index",key,"is out of range.");
return n;
};
const affirmUnlocked = function(stmt,currentOpName){
if(stmt._isLocked){
toss3("Operation is illegal when statement is locked:",currentOpName);
}
return stmt;
};
const bindOne = function f(stmt,ndx,bindType,val){
affirmUnlocked(stmt, 'bind()');
if(!f._){
f._tooBigInt = (v)=>toss3(
"BigInt value is too big to store without precision loss:", v
);
f._ = {
string: function(stmt, ndx, val, asBlob){
if(1){
const stack = wasm.scopedAllocPush();
try{
const n = wasm.jstrlen(val);
const pStr = wasm.scopedAlloc(n);
wasm.jstrcpy(val, wasm.heap8u(), pStr, n, false);
const f = asBlob ? capi.sqlite3_bind_blob : capi.sqlite3_bind_text;
return f(stmt.pointer, ndx, pStr, n, capi.SQLITE_TRANSIENT);
|
︙ | | | ︙ | |
10604
10605
10606
10607
10608
10609
10610
10611
10612
10613
10614
10615
10616
10617
10618
|
return f(stmt.pointer, ndx, pStr, bytes.length, capi.SQLITE_TRANSIENT);
}finally{
wasm.dealloc(pStr);
}
}
}
};
}/* static init */
affirmSupportedBindType(val);
ndx = affirmParamIndex(stmt,ndx);
let rc = 0;
switch((null===val || undefined===val) ? BindTypes.null : bindType){
case BindTypes.null:
rc = capi.sqlite3_bind_null(stmt.pointer, ndx);
break;
|
<
>
|
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
|
return f(stmt.pointer, ndx, pStr, bytes.length, capi.SQLITE_TRANSIENT);
}finally{
wasm.dealloc(pStr);
}
}
}
};
}
affirmSupportedBindType(val);
ndx = affirmParamIndex(stmt,ndx);
let rc = 0;
switch((null===val || undefined===val) ? BindTypes.null : bindType){
case BindTypes.null:
rc = capi.sqlite3_bind_null(stmt.pointer, ndx);
break;
|
︙ | | | ︙ | |
10629
10630
10631
10632
10633
10634
10635
10636
10637
10638
10639
10640
10641
10642
10643
10644
10645
10646
10647
10648
10649
10650
10651
10652
10653
10654
10655
10656
10657
10658
10659
10660
10661
10662
10663
10664
|
m = capi.sqlite3_bind_int64;
}else if(util.bigIntFitsDouble(val)){
val = Number(val);
m = capi.sqlite3_bind_double;
}else{
f._tooBigInt(val);
}
}else{ // !int32, !bigint
val = Number(val);
if(wasm.bigIntEnabled && Number.isInteger(val)){
m = capi.sqlite3_bind_int64;
}else{
m = capi.sqlite3_bind_double;
}
}
rc = m(stmt.pointer, ndx, val);
break;
}
case BindTypes.boolean:
rc = capi.sqlite3_bind_int(stmt.pointer, ndx, val ? 1 : 0);
break;
case BindTypes.blob: {
if('string'===typeof val){
rc = f._.string(stmt, ndx, val, true);
}else if(!util.isBindableTypedArray(val)){
toss3("Binding a value as a blob requires",
"that it be a string, Uint8Array, or Int8Array.");
}else if(1){
/* _Hypothetically_ more efficient than the impl in the 'else' block. */
const stack = wasm.scopedAllocPush();
try{
const pBlob = wasm.scopedAlloc(val.byteLength || 1);
wasm.heap8().set(val.byteLength ? val : [0], pBlob)
rc = capi.sqlite3_bind_blob(stmt.pointer, ndx, pBlob, val.byteLength,
capi.SQLITE_TRANSIENT);
}finally{
|
|
|
|
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
|
m = capi.sqlite3_bind_int64;
}else if(util.bigIntFitsDouble(val)){
val = Number(val);
m = capi.sqlite3_bind_double;
}else{
f._tooBigInt(val);
}
}else{
val = Number(val);
if(wasm.bigIntEnabled && Number.isInteger(val)){
m = capi.sqlite3_bind_int64;
}else{
m = capi.sqlite3_bind_double;
}
}
rc = m(stmt.pointer, ndx, val);
break;
}
case BindTypes.boolean:
rc = capi.sqlite3_bind_int(stmt.pointer, ndx, val ? 1 : 0);
break;
case BindTypes.blob: {
if('string'===typeof val){
rc = f._.string(stmt, ndx, val, true);
}else if(!util.isBindableTypedArray(val)){
toss3("Binding a value as a blob requires",
"that it be a string, Uint8Array, or Int8Array.");
}else if(1){
const stack = wasm.scopedAllocPush();
try{
const pBlob = wasm.scopedAlloc(val.byteLength || 1);
wasm.heap8().set(val.byteLength ? val : [0], pBlob)
rc = capi.sqlite3_bind_blob(stmt.pointer, ndx, pBlob, val.byteLength,
capi.SQLITE_TRANSIENT);
}finally{
|
︙ | | | ︙ | |
10680
10681
10682
10683
10684
10685
10686
10687
10688
10689
10690
10691
10692
10693
10694
10695
10696
10697
10698
10699
10700
10701
10702
10703
10704
10705
10706
10707
10708
10709
10710
10711
10712
10713
10714
10715
10716
10717
10718
10719
10720
10721
10722
10723
10724
10725
10726
10727
10728
10729
10730
10731
10732
10733
10734
10735
10736
10737
10738
10739
10740
10741
10742
10743
10744
10745
10746
10747
10748
10749
10750
10751
10752
10753
10754
10755
10756
10757
10758
10759
10760
10761
10762
10763
10764
10765
10766
10767
10768
10769
10770
10771
10772
10773
10774
10775
10776
10777
10778
10779
10780
10781
10782
10783
10784
10785
10786
10787
10788
10789
10790
10791
10792
10793
10794
10795
10796
10797
10798
10799
10800
10801
10802
10803
10804
10805
10806
10807
10808
10809
10810
10811
10812
10813
10814
10815
10816
10817
10818
10819
10820
10821
10822
10823
10824
10825
10826
10827
10828
10829
10830
10831
10832
10833
10834
10835
10836
10837
10838
10839
10840
10841
10842
10843
10844
10845
10846
10847
10848
10849
10850
10851
10852
10853
10854
10855
10856
10857
10858
10859
10860
10861
10862
10863
10864
10865
10866
10867
10868
10869
10870
10871
10872
10873
10874
10875
10876
10877
10878
10879
10880
10881
10882
10883
10884
10885
10886
10887
10888
10889
10890
10891
10892
10893
10894
10895
10896
10897
10898
10899
10900
10901
10902
10903
10904
10905
10906
10907
10908
10909
10910
10911
10912
10913
10914
10915
10916
10917
10918
10919
10920
10921
10922
10923
10924
10925
10926
10927
10928
10929
10930
10931
10932
10933
10934
10935
10936
10937
10938
10939
10940
10941
10942
10943
10944
10945
10946
10947
10948
10949
10950
10951
10952
10953
10954
10955
10956
10957
10958
10959
10960
10961
10962
10963
10964
10965
10966
10967
10968
10969
10970
|
toss3("Unsupported bind() argument type: "+(typeof val));
}
if(rc) DB.checkRc(stmt.db.pointer, rc);
return stmt;
};
Stmt.prototype = {
/**
"Finalizes" this statement. This is a no-op if the
statement has already been finalizes. Returns
undefined. Most methods in this class will throw if called
after this is.
*/
finalize: function(){
if(this.pointer){
affirmUnlocked(this,'finalize()');
delete __stmtMap.get(this.db)[this.pointer];
capi.sqlite3_finalize(this.pointer);
__ptrMap.delete(this);
delete this._mayGet;
delete this.columnCount;
delete this.parameterCount;
delete this.db;
delete this._isLocked;
}
},
/** Clears all bound values. Returns this object.
Throws if this statement has been finalized. */
clearBindings: function(){
affirmUnlocked(affirmStmtOpen(this), 'clearBindings()')
capi.sqlite3_clear_bindings(this.pointer);
this._mayGet = false;
return this;
},
/**
Resets this statement so that it may be step()ed again
from the beginning. Returns this object. Throws if this
statement has been finalized.
If passed a truthy argument then this.clearBindings() is
also called, otherwise any existing bindings, along with
any memory allocated for them, are retained.
*/
reset: function(alsoClearBinds){
affirmUnlocked(this,'reset()');
if(alsoClearBinds) this.clearBindings();
capi.sqlite3_reset(affirmStmtOpen(this).pointer);
this._mayGet = false;
return this;
},
/**
Binds one or more values to its bindable parameters. It
accepts 1 or 2 arguments:
If passed a single argument, it must be either an array, an
object, or a value of a bindable type (see below).
If passed 2 arguments, the first one is the 1-based bind
index or bindable parameter name and the second one must be
a value of a bindable type.
Bindable value types:
- null is bound as NULL.
- undefined as a standalone value is a no-op intended to
simplify certain client-side use cases: passing undefined as
a value to this function will not actually bind anything and
this function will skip confirmation that binding is even
legal. (Those semantics simplify certain client-side uses.)
Conversely, a value of undefined as an array or object
property when binding an array/object (see below) is treated
the same as null.
- Numbers are bound as either doubles or integers: doubles if
they are larger than 32 bits, else double or int32, depending
on whether they have a fractional part. Booleans are bound as
integer 0 or 1. It is not expected the distinction of binding
doubles which have no fractional parts is integers is
significant for the majority of clients due to sqlite3's data
typing model. If [BigInt] support is enabled then this
routine will bind BigInt values as 64-bit integers if they'll
fit in 64 bits. If that support disabled, it will store the
BigInt as an int32 or a double if it can do so without loss
of precision. If the BigInt is _too BigInt_ then it will
throw.
- Strings are bound as strings (use bindAsBlob() to force
blob binding).
- Uint8Array and Int8Array instances are bound as blobs.
(TODO: binding the other TypedArray types.)
If passed an array, each element of the array is bound at
the parameter index equal to the array index plus 1
(because arrays are 0-based but binding is 1-based).
If passed an object, each object key is treated as a
bindable parameter name. The object keys _must_ match any
bindable parameter names, including any `$`, `@`, or `:`
prefix. Because `$` is a legal identifier chararacter in
JavaScript, that is the suggested prefix for bindable
parameters: `stmt.bind({$a: 1, $b: 2})`.
It returns this object on success and throws on
error. Errors include:
- Any bind index is out of range, a named bind parameter
does not match, or this statement has no bindable
parameters.
- Any value to bind is of an unsupported type.
- Passed no arguments or more than two.
- The statement has been finalized.
*/
bind: function(/*[ndx,] arg*/){
affirmStmtOpen(this);
let ndx, arg;
switch(arguments.length){
case 1: ndx = 1; arg = arguments[0]; break;
case 2: ndx = arguments[0]; arg = arguments[1]; break;
default: toss3("Invalid bind() arguments.");
}
if(undefined===arg){
/* It might seem intuitive to bind undefined as NULL
but this approach simplifies certain client-side
uses when passing on arguments between 2+ levels of
functions. */
return this;
}else if(!this.parameterCount){
toss3("This statement has no bindable parameters.");
}
this._mayGet = false;
if(null===arg){
/* bind NULL */
return bindOne(this, ndx, BindTypes.null, arg);
}
else if(Array.isArray(arg)){
/* bind each entry by index */
if(1!==arguments.length){
toss3("When binding an array, an index argument is not permitted.");
}
arg.forEach((v,i)=>bindOne(this, i+1, affirmSupportedBindType(v), v));
return this;
}
else if('object'===typeof arg/*null was checked above*/
&& !util.isBindableTypedArray(arg)){
/* Treat each property of arg as a named bound parameter. */
if(1!==arguments.length){
toss3("When binding an object, an index argument is not permitted.");
}
Object.keys(arg)
.forEach(k=>bindOne(this, k,
affirmSupportedBindType(arg[k]),
arg[k]));
return this;
}else{
return bindOne(this, ndx, affirmSupportedBindType(arg), arg);
}
toss3("Should not reach this point.");
},
/**
Special case of bind() which binds the given value using the
BLOB binding mechanism instead of the default selected one for
the value. The ndx may be a numbered or named bind index. The
value must be of type string, null/undefined (both get treated
as null), or a TypedArray of a type supported by the bind()
API.
If passed a single argument, a bind index of 1 is assumed and
the first argument is the value.
*/
bindAsBlob: function(ndx,arg){
affirmStmtOpen(this);
if(1===arguments.length){
arg = ndx;
ndx = 1;
}
const t = affirmSupportedBindType(arg);
if(BindTypes.string !== t && BindTypes.blob !== t
&& BindTypes.null !== t){
toss3("Invalid value type for bindAsBlob()");
}
bindOne(this, ndx, BindTypes.blob, arg);
this._mayGet = false;
return this;
},
/**
Steps the statement one time. If the result indicates that a
row of data is available, a truthy value is returned.
If no row of data is available, a falsy
value is returned. Throws on error.
*/
step: function(){
affirmUnlocked(this, 'step()');
const rc = capi.sqlite3_step(affirmStmtOpen(this).pointer);
switch(rc){
case capi.SQLITE_DONE: return this._mayGet = false;
case capi.SQLITE_ROW: return this._mayGet = true;
default:
this._mayGet = false;
console.warn("sqlite3_step() rc=",rc,
capi.sqlite3_js_rc_str(rc),
"SQL =", capi.sqlite3_sql(this.pointer));
DB.checkRc(this.db.pointer, rc);
}
},
/**
Functions exactly like step() except that...
1) On success, it calls this.reset() and returns this object.
2) On error, it throws and does not call reset().
This is intended to simplify constructs like:
```
for(...) {
stmt.bind(...).stepReset();
}
```
Note that the reset() call makes it illegal to call this.get()
after the step.
*/
stepReset: function(){
this.step();
return this.reset();
},
/**
Functions like step() except that it finalizes this statement
immediately after stepping unless the step cannot be performed
because the statement is locked. Throws on error, but any error
other than the statement-is-locked case will also trigger
finalization of this statement.
On success, it returns true if the step indicated that a row of
data was available, else it returns false.
This is intended to simplify use cases such as:
```
aDb.prepare("insert into foo(a) values(?)").bind(123).stepFinalize();
```
*/
stepFinalize: function(){
const rc = this.step();
this.finalize();
return rc;
},
/**
Fetches the value from the given 0-based column index of
the current data row, throwing if index is out of range.
Requires that step() has just returned a truthy value, else
an exception is thrown.
By default it will determine the data type of the result
automatically. If passed a second arugment, it must be one
of the enumeration values for sqlite3 types, which are
defined as members of the sqlite3 module: SQLITE_INTEGER,
SQLITE_FLOAT, SQLITE_TEXT, SQLITE_BLOB. Any other value,
except for undefined, will trigger an exception. Passing
undefined is the same as not passing a value. It is legal
to, e.g., fetch an integer value as a string, in which case
sqlite3 will convert the value to a string.
If ndx is an array, this function behaves a differently: it
assigns the indexes of the array, from 0 to the number of
result columns, to the values of the corresponding column,
and returns that array.
If ndx is a plain object, this function behaves even
differentlier: it assigns the properties of the object to
the values of their corresponding result columns.
Blobs are returned as Uint8Array instances.
Potential TODO: add type ID SQLITE_JSON, which fetches the
result as a string and passes it (if it's not null) to
JSON.parse(), returning the result of that. Until then,
getJSON() can be used for that.
*/
get: function(ndx,asType){
if(!affirmStmtOpen(this)._mayGet){
toss3("Stmt.step() has not (recently) returned true.");
}
if(Array.isArray(ndx)){
let i = 0;
while(i<this.columnCount){
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|
toss3("Unsupported bind() argument type: "+(typeof val));
}
if(rc) DB.checkRc(stmt.db.pointer, rc);
return stmt;
};
Stmt.prototype = {
finalize: function(){
if(this.pointer){
affirmUnlocked(this,'finalize()');
delete __stmtMap.get(this.db)[this.pointer];
capi.sqlite3_finalize(this.pointer);
__ptrMap.delete(this);
delete this._mayGet;
delete this.columnCount;
delete this.parameterCount;
delete this.db;
delete this._isLocked;
}
},
clearBindings: function(){
affirmUnlocked(affirmStmtOpen(this), 'clearBindings()')
capi.sqlite3_clear_bindings(this.pointer);
this._mayGet = false;
return this;
},
reset: function(alsoClearBinds){
affirmUnlocked(this,'reset()');
if(alsoClearBinds) this.clearBindings();
capi.sqlite3_reset(affirmStmtOpen(this).pointer);
this._mayGet = false;
return this;
},
bind: function(){
affirmStmtOpen(this);
let ndx, arg;
switch(arguments.length){
case 1: ndx = 1; arg = arguments[0]; break;
case 2: ndx = arguments[0]; arg = arguments[1]; break;
default: toss3("Invalid bind() arguments.");
}
if(undefined===arg){
return this;
}else if(!this.parameterCount){
toss3("This statement has no bindable parameters.");
}
this._mayGet = false;
if(null===arg){
return bindOne(this, ndx, BindTypes.null, arg);
}
else if(Array.isArray(arg)){
if(1!==arguments.length){
toss3("When binding an array, an index argument is not permitted.");
}
arg.forEach((v,i)=>bindOne(this, i+1, affirmSupportedBindType(v), v));
return this;
}
else if('object'===typeof arg
&& !util.isBindableTypedArray(arg)){
if(1!==arguments.length){
toss3("When binding an object, an index argument is not permitted.");
}
Object.keys(arg)
.forEach(k=>bindOne(this, k,
affirmSupportedBindType(arg[k]),
arg[k]));
return this;
}else{
return bindOne(this, ndx, affirmSupportedBindType(arg), arg);
}
toss3("Should not reach this point.");
},
bindAsBlob: function(ndx,arg){
affirmStmtOpen(this);
if(1===arguments.length){
arg = ndx;
ndx = 1;
}
const t = affirmSupportedBindType(arg);
if(BindTypes.string !== t && BindTypes.blob !== t
&& BindTypes.null !== t){
toss3("Invalid value type for bindAsBlob()");
}
bindOne(this, ndx, BindTypes.blob, arg);
this._mayGet = false;
return this;
},
step: function(){
affirmUnlocked(this, 'step()');
const rc = capi.sqlite3_step(affirmStmtOpen(this).pointer);
switch(rc){
case capi.SQLITE_DONE: return this._mayGet = false;
case capi.SQLITE_ROW: return this._mayGet = true;
default:
this._mayGet = false;
console.warn("sqlite3_step() rc=",rc,
capi.sqlite3_js_rc_str(rc),
"SQL =", capi.sqlite3_sql(this.pointer));
DB.checkRc(this.db.pointer, rc);
}
},
stepReset: function(){
this.step();
return this.reset();
},
stepFinalize: function(){
const rc = this.step();
this.finalize();
return rc;
},
get: function(ndx,asType){
if(!affirmStmtOpen(this)._mayGet){
toss3("Stmt.step() has not (recently) returned true.");
}
if(Array.isArray(ndx)){
let i = 0;
while(i<this.columnCount){
|
︙ | | | ︙ | |
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|
? capi.sqlite3_column_type(this.pointer, ndx)
: asType){
case capi.SQLITE_NULL: return null;
case capi.SQLITE_INTEGER:{
if(wasm.bigIntEnabled){
const rc = capi.sqlite3_column_int64(this.pointer, ndx);
if(rc>=Number.MIN_SAFE_INTEGER && rc<=Number.MAX_SAFE_INTEGER){
/* Coerce "normal" number ranges to normal number values,
and only return BigInt-type values for numbers out of this
range. */
return Number(rc).valueOf();
}
return rc;
}else{
const rc = capi.sqlite3_column_double(this.pointer, ndx);
if(rc>Number.MAX_SAFE_INTEGER || rc<Number.MIN_SAFE_INTEGER){
/* Throwing here is arguable but, since we're explicitly
extracting an SQLITE_INTEGER-type value, it seems fair to throw
if the extracted number is out of range for that type.
This policy may be laxened to simply pass on the number and
hope for the best, as the C API would do. */
toss3("Integer is out of range for JS integer range: "+rc);
}
//console.log("get integer rc=",rc,isInt32(rc));
return util.isInt32(rc) ? (rc | 0) : rc;
}
}
case capi.SQLITE_FLOAT:
return capi.sqlite3_column_double(this.pointer, ndx);
case capi.SQLITE_TEXT:
return capi.sqlite3_column_text(this.pointer, ndx);
case capi.SQLITE_BLOB: {
const n = capi.sqlite3_column_bytes(this.pointer, ndx),
ptr = capi.sqlite3_column_blob(this.pointer, ndx),
rc = new Uint8Array(n);
//heap = n ? wasm.heap8() : false;
if(n) rc.set(wasm.heap8u().slice(ptr, ptr+n), 0);
//for(let i = 0; i < n; ++i) rc[i] = heap[ptr + i];
if(n && this.db._blobXfer instanceof Array){
/* This is an optimization soley for the
Worker-based API. These values will be
transfered to the main thread directly
instead of being copied. */
this.db._blobXfer.push(rc.buffer);
}
return rc;
}
default: toss3("Don't know how to translate",
"type of result column #"+ndx+".");
}
toss3("Not reached.");
},
/** Equivalent to get(ndx) but coerces the result to an
integer. */
getInt: function(ndx){return this.get(ndx,capi.SQLITE_INTEGER)},
/** Equivalent to get(ndx) but coerces the result to a
float. */
getFloat: function(ndx){return this.get(ndx,capi.SQLITE_FLOAT)},
/** Equivalent to get(ndx) but coerces the result to a
string. */
getString: function(ndx){return this.get(ndx,capi.SQLITE_TEXT)},
/** Equivalent to get(ndx) but coerces the result to a
Uint8Array. */
getBlob: function(ndx){return this.get(ndx,capi.SQLITE_BLOB)},
/**
A convenience wrapper around get() which fetches the value
as a string and then, if it is not null, passes it to
JSON.parse(), returning that result. Throws if parsing
fails. If the result is null, null is returned. An empty
string, on the other hand, will trigger an exception.
*/
getJSON: function(ndx){
const s = this.get(ndx, capi.SQLITE_STRING);
return null===s ? s : JSON.parse(s);
},
// Design note: the only reason most of these getters have a 'get'
// prefix is for consistency with getVALUE_TYPE(). The latter
// arguably really need that prefix for API readability and the
// rest arguably don't, but consistency is a powerful thing.
/**
Returns the result column name of the given index, or
throws if index is out of bounds or this statement has been
finalized. This can be used without having run step()
first.
*/
getColumnName: function(ndx){
return capi.sqlite3_column_name(
affirmColIndex(affirmStmtOpen(this),ndx).pointer, ndx
);
},
/**
If this statement potentially has result columns, this
function returns an array of all such names. If passed an
array, it is used as the target and all names are appended
to it. Returns the target array. Throws if this statement
cannot have result columns. This object's columnCount member
holds the number of columns.
*/
getColumnNames: function(tgt=[]){
affirmColIndex(affirmStmtOpen(this),0);
for(let i = 0; i < this.columnCount; ++i){
tgt.push(capi.sqlite3_column_name(this.pointer, i));
}
return tgt;
},
/**
If this statement has named bindable parameters and the
given name matches one, its 1-based bind index is
returned. If no match is found, 0 is returned. If it has no
bindable parameters, the undefined value is returned.
*/
getParamIndex: function(name){
return (affirmStmtOpen(this).parameterCount
? capi.sqlite3_bind_parameter_index(this.pointer, name)
: undefined);
}
}/*Stmt.prototype*/;
{/* Add the `pointer` property to DB and Stmt. */
const prop = {
enumerable: true,
get: function(){return __ptrMap.get(this)},
set: ()=>toss3("The pointer property is read-only.")
}
Object.defineProperty(Stmt.prototype, 'pointer', prop);
Object.defineProperty(DB.prototype, 'pointer', prop);
}
/** The OO API's public namespace. */
sqlite3.oo1 = {
version: {
lib: capi.sqlite3_libversion(),
ooApi: "0.1"
},
DB,
Stmt
}/*oo1 object*/;
if(util.isUIThread()){
/**
Functionally equivalent to DB(storageName,'c','kvvfs') except
that it throws if the given storage name is not one of 'local'
or 'session'.
*/
sqlite3.oo1.JsStorageDb = function(storageName='session'){
if('session'!==storageName && 'local'!==storageName){
toss3("JsStorageDb db name must be one of 'session' or 'local'.");
}
dbCtorHelper.call(this, {
filename: storageName,
flags: 'c',
vfs: "kvvfs"
});
};
const jdb = sqlite3.oo1.JsStorageDb;
jdb.prototype = Object.create(DB.prototype);
/** Equivalent to sqlite3_js_kvvfs_clear(). */
jdb.clearStorage = capi.sqlite3_js_kvvfs_clear;
/**
Clears this database instance's storage or throws if this
instance has been closed. Returns the number of
database blocks which were cleaned up.
*/
jdb.prototype.clearStorage = function(){
return jdb.clearStorage(affirmDbOpen(this).filename);
};
/** Equivalent to sqlite3_js_kvvfs_size(). */
jdb.storageSize = capi.sqlite3_js_kvvfs_size;
/**
Returns the _approximate_ number of bytes this database takes
up in its storage or throws if this instance has been closed.
*/
jdb.prototype.storageSize = function(){
return jdb.storageSize(affirmDbOpen(this).filename);
};
}/*main-window-only bits*/
});
/* END FILE: api/sqlite3-api-oo1.js */
/* BEGIN FILE: api/sqlite3-api-worker1.js */
/*
2022-07-22
The author disclaims copyright to this source code. In place of a
legal notice, here is a blessing:
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
***********************************************************************
This file implements the initializer for the sqlite3 "Worker API
#1", a very basic DB access API intended to be scripted from a main
window thread via Worker-style messages. Because of limitations in
that type of communication, this API is minimalistic and only
capable of serving relatively basic DB requests (e.g. it cannot
process nested query loops concurrently).
This file requires that the core C-style sqlite3 API and OO API #1
have been loaded.
*/
/**
sqlite3.initWorker1API() implements a Worker-based wrapper around
SQLite3 OO API #1, colloquially known as "Worker API #1".
In order to permit this API to be loaded in worker threads without
automatically registering onmessage handlers, initializing the
worker API requires calling initWorker1API(). If this function is
called from a non-worker thread then it throws an exception. It
must only be called once per Worker.
When initialized, it installs message listeners to receive Worker
messages and then it posts a message in the form:
```
{type:'sqlite3-api', result:'worker1-ready'}
```
to let the client know that it has been initialized. Clients may
optionally depend on this function not returning until
initialization is complete, as the initialization is synchronous.
In some contexts, however, listening for the above message is
a better fit.
Note that the worker-based interface can be slightly quirky because
of its async nature. In particular, any number of messages may be posted
to the worker before it starts handling any of them. If, e.g., an
"open" operation fails, any subsequent messages will fail. The
Promise-based wrapper for this API (`sqlite3-worker1-promiser.js`)
is more comfortable to use in that regard.
The documentation for the input and output worker messages for
this API follows...
====================================================================
Common message format...
Each message posted to the worker has an operation-independent
envelope and operation-dependent arguments:
```
{
type: string, // one of: 'open', 'close', 'exec', 'config-get'
messageId: OPTIONAL arbitrary value. The worker will copy it as-is
into response messages to assist in client-side dispatching.
dbId: a db identifier string (returned by 'open') which tells the
operation which database instance to work on. If not provided, the
first-opened db is used. This is an "opaque" value, with no
inherently useful syntax or information. Its value is subject to
change with any given build of this API and cannot be used as a
basis for anything useful beyond its one intended purpose.
args: ...operation-dependent arguments...
// the framework may add other properties for testing or debugging
// purposes.
}
```
Response messages, posted back to the main thread, look like:
```
{
type: string. Same as above except for error responses, which have the type
'error',
messageId: same value, if any, provided by the inbound message
dbId: the id of the db which was operated on, if any, as returned
by the corresponding 'open' operation.
result: ...operation-dependent result...
}
```
====================================================================
Error responses
Errors are reported messages in an operation-independent format:
```
{
type: "error",
messageId: ...as above...,
dbId: ...as above...
result: {
operation: type of the triggering operation: 'open', 'close', ...
message: ...error message text...
errorClass: string. The ErrorClass.name property from the thrown exception.
input: the message object which triggered the error.
stack: _if available_, a stack trace array.
}
}
```
====================================================================
"config-get"
This operation fetches the serializable parts of the sqlite3 API
configuration.
Message format:
```
{
type: "config-get",
messageId: ...as above...,
args: currently ignored and may be elided.
}
```
Response:
```
{
type: "config-get",
messageId: ...as above...,
result: {
version: sqlite3.version object
bigIntEnabled: bool. True if BigInt support is enabled.
wasmfsOpfsDir: path prefix, if any, _intended_ for use with
WASMFS OPFS persistent storage.
wasmfsOpfsEnabled: true if persistent storage is enabled in the
current environment. Only files stored under wasmfsOpfsDir
will persist using that mechanism, however. It is legal to use
the non-WASMFS OPFS VFS to open a database via a URI-style
db filename.
vfsList: result of sqlite3.capi.sqlite3_js_vfs_list()
}
}
```
====================================================================
"open" a database
Message format:
```
{
type: "open",
messageId: ...as above...,
args:{
filename [=":memory:" or "" (unspecified)]: the db filename.
See the sqlite3.oo1.DB constructor for peculiarities and
transformations,
}
}
```
Response:
```
{
type: "open",
messageId: ...as above...,
result: {
filename: db filename, possibly differing from the input.
dbId: an opaque ID value which must be passed in the message
envelope to other calls in this API to tell them which db to
use. If it is not provided to future calls, they will default to
operating on the first-opened db. This property is, for API
consistency's sake, also part of the containing message envelope.
Only the `open` operation includes it in the `result` property.
persistent: true if the given filename resides in the
known-persistent storage, else false.
}
}
```
====================================================================
"close" a database
Message format:
```
{
type: "close",
messageId: ...as above...
dbId: ...as above...
args: OPTIONAL {unlink: boolean}
}
```
If the `dbId` does not refer to an opened ID, this is a no-op. If
the `args` object contains a truthy `unlink` value then the database
will be unlinked (deleted) after closing it. The inability to close a
db (because it's not opened) or delete its file does not trigger an
error.
Response:
```
{
type: "close",
messageId: ...as above...,
result: {
filename: filename of closed db, or undefined if no db was closed
}
}
```
====================================================================
"exec" SQL
All SQL execution is processed through the exec operation. It offers
most of the features of the oo1.DB.exec() method, with a few limitations
imposed by the state having to cross thread boundaries.
Message format:
```
{
type: "exec",
messageId: ...as above...
dbId: ...as above...
args: string (SQL) or {... see below ...}
}
```
Response:
```
{
type: "exec",
messageId: ...as above...,
dbId: ...as above...
result: {
input arguments, possibly modified. See below.
}
}
```
The arguments are in the same form accepted by oo1.DB.exec(), with
the exceptions noted below.
A function-type args.callback property cannot cross
the window/Worker boundary, so is not useful here. If
args.callback is a string then it is assumed to be a
message type key, in which case a callback function will be
applied which posts each row result via:
postMessage({type: thatKeyType,
rowNumber: 1-based-#,
row: theRow,
columnNames: anArray
})
And, at the end of the result set (whether or not any result rows
were produced), it will post an identical message with
(row=undefined, rowNumber=null) to alert the caller than the result
set is completed. Note that a row value of `null` is a legal row
result for certain arg.rowMode values.
(Design note: we don't use (row=undefined, rowNumber=undefined) to
indicate end-of-results because fetching those would be
indistinguishable from fetching from an empty object unless the
client used hasOwnProperty() (or similar) to distinguish "missing
property" from "property with the undefined value". Similarly,
`null` is a legal value for `row` in some case , whereas the db
layer won't emit a result value of `undefined`.)
The callback proxy must not recurse into this interface. An exec()
call will tie up the Worker thread, causing any recursion attempt
to wait until the first exec() is completed.
The response is the input options object (or a synthesized one if
passed only a string), noting that options.resultRows and
options.columnNames may be populated by the call to db.exec().
*/
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
sqlite3.initWorker1API = function(){
'use strict';
const toss = (...args)=>{throw new Error(args.join(' '))};
if('function' !== typeof importScripts){
toss("initWorker1API() must be run from a Worker thread.");
}
const self = this.self;
const sqlite3 = this.sqlite3 || toss("Missing this.sqlite3 object.");
const DB = sqlite3.oo1.DB;
/**
Returns the app-wide unique ID for the given db, creating one if
needed.
*/
const getDbId = function(db){
let id = wState.idMap.get(db);
if(id) return id;
id = 'db#'+(++wState.idSeq)+'@'+db.pointer;
/** ^^^ can't simply use db.pointer b/c closing/opening may re-use
the same address, which could map pending messages to a wrong
instance. */
wState.idMap.set(db, id);
return id;
};
/**
Internal helper for managing Worker-level state.
*/
const wState = {
/** First-opened db is the default for future operations when no
dbId is provided by the client. */
defaultDb: undefined,
/** Sequence number of dbId generation. */
idSeq: 0,
/** Map of DB instances to dbId. */
idMap: new WeakMap,
/** Temp holder for "transferable" postMessage() state. */
xfer: [],
open: function(opt){
const db = new DB(opt.filename);
this.dbs[getDbId(db)] = db;
if(!this.defaultDb) this.defaultDb = db;
return db;
},
close: function(db,alsoUnlink){
if(db){
delete this.dbs[getDbId(db)];
const filename = db.filename;
const pVfs = sqlite3.capi.wasm.sqlite3_wasm_db_vfs(db.pointer, 0);
db.close();
if(db===this.defaultDb) this.defaultDb = undefined;
if(alsoUnlink && filename && pVfs){
sqlite3.capi.wasm.sqlite3_wasm_vfs_unlink(pVfs, filename);
}
}
},
/**
Posts the given worker message value. If xferList is provided,
it must be an array, in which case a copy of it passed as
postMessage()'s second argument and xferList.length is set to
0.
*/
post: function(msg,xferList){
if(xferList && xferList.length){
self.postMessage( msg, Array.from(xferList) );
xferList.length = 0;
}else{
self.postMessage(msg);
}
},
/** Map of DB IDs to DBs. */
dbs: Object.create(null),
/** Fetch the DB for the given id. Throw if require=true and the
id is not valid, else return the db or undefined. */
getDb: function(id,require=true){
return this.dbs[id]
|| (require ? toss("Unknown (or closed) DB ID:",id) : undefined);
}
};
/** Throws if the given db is falsy or not opened. */
const affirmDbOpen = function(db = wState.defaultDb){
return (db && db.pointer) ? db : toss("DB is not opened.");
};
/** Extract dbId from the given message payload. */
const getMsgDb = function(msgData,affirmExists=true){
const db = wState.getDb(msgData.dbId,false) || wState.defaultDb;
return affirmExists ? affirmDbOpen(db) : db;
};
const getDefaultDbId = function(){
return wState.defaultDb && getDbId(wState.defaultDb);
};
/**
A level of "organizational abstraction" for the Worker
API. Each method in this object must map directly to a Worker
message type key. The onmessage() dispatcher attempts to
dispatch all inbound messages to a method of this object,
passing it the event.data part of the inbound event object. All
methods must return a plain Object containing any result
state, which the dispatcher may amend. All methods must throw
on error.
*/
const wMsgHandler = {
open: function(ev){
const oargs = Object.create(null), args = (ev.args || Object.create(null));
if(args.simulateError){ // undocumented internal testing option
toss("Throwing because of simulateError flag.");
}
const rc = Object.create(null);
const pDir = sqlite3.capi.sqlite3_wasmfs_opfs_dir();
if(!args.filename || ':memory:'===args.filename){
oargs.filename = args.filename || '';
}else{
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|
? capi.sqlite3_column_type(this.pointer, ndx)
: asType){
case capi.SQLITE_NULL: return null;
case capi.SQLITE_INTEGER:{
if(wasm.bigIntEnabled){
const rc = capi.sqlite3_column_int64(this.pointer, ndx);
if(rc>=Number.MIN_SAFE_INTEGER && rc<=Number.MAX_SAFE_INTEGER){
return Number(rc).valueOf();
}
return rc;
}else{
const rc = capi.sqlite3_column_double(this.pointer, ndx);
if(rc>Number.MAX_SAFE_INTEGER || rc<Number.MIN_SAFE_INTEGER){
toss3("Integer is out of range for JS integer range: "+rc);
}
return util.isInt32(rc) ? (rc | 0) : rc;
}
}
case capi.SQLITE_FLOAT:
return capi.sqlite3_column_double(this.pointer, ndx);
case capi.SQLITE_TEXT:
return capi.sqlite3_column_text(this.pointer, ndx);
case capi.SQLITE_BLOB: {
const n = capi.sqlite3_column_bytes(this.pointer, ndx),
ptr = capi.sqlite3_column_blob(this.pointer, ndx),
rc = new Uint8Array(n);
if(n) rc.set(wasm.heap8u().slice(ptr, ptr+n), 0);
if(n && this.db._blobXfer instanceof Array){
this.db._blobXfer.push(rc.buffer);
}
return rc;
}
default: toss3("Don't know how to translate",
"type of result column #"+ndx+".");
}
toss3("Not reached.");
},
getInt: function(ndx){return this.get(ndx,capi.SQLITE_INTEGER)},
getFloat: function(ndx){return this.get(ndx,capi.SQLITE_FLOAT)},
getString: function(ndx){return this.get(ndx,capi.SQLITE_TEXT)},
getBlob: function(ndx){return this.get(ndx,capi.SQLITE_BLOB)},
getJSON: function(ndx){
const s = this.get(ndx, capi.SQLITE_STRING);
return null===s ? s : JSON.parse(s);
},
getColumnName: function(ndx){
return capi.sqlite3_column_name(
affirmColIndex(affirmStmtOpen(this),ndx).pointer, ndx
);
},
getColumnNames: function(tgt=[]){
affirmColIndex(affirmStmtOpen(this),0);
for(let i = 0; i < this.columnCount; ++i){
tgt.push(capi.sqlite3_column_name(this.pointer, i));
}
return tgt;
},
getParamIndex: function(name){
return (affirmStmtOpen(this).parameterCount
? capi.sqlite3_bind_parameter_index(this.pointer, name)
: undefined);
}
};
{
const prop = {
enumerable: true,
get: function(){return __ptrMap.get(this)},
set: ()=>toss3("The pointer property is read-only.")
}
Object.defineProperty(Stmt.prototype, 'pointer', prop);
Object.defineProperty(DB.prototype, 'pointer', prop);
}
sqlite3.oo1 = {
version: {
lib: capi.sqlite3_libversion(),
ooApi: "0.1"
},
DB,
Stmt
};
if(util.isUIThread()){
sqlite3.oo1.JsStorageDb = function(storageName='session'){
if('session'!==storageName && 'local'!==storageName){
toss3("JsStorageDb db name must be one of 'session' or 'local'.");
}
dbCtorHelper.call(this, {
filename: storageName,
flags: 'c',
vfs: "kvvfs"
});
};
const jdb = sqlite3.oo1.JsStorageDb;
jdb.prototype = Object.create(DB.prototype);
jdb.clearStorage = capi.sqlite3_js_kvvfs_clear;
jdb.prototype.clearStorage = function(){
return jdb.clearStorage(affirmDbOpen(this).filename);
};
jdb.storageSize = capi.sqlite3_js_kvvfs_size;
jdb.prototype.storageSize = function(){
return jdb.storageSize(affirmDbOpen(this).filename);
};
}
});
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
sqlite3.initWorker1API = function(){
'use strict';
const toss = (...args)=>{throw new Error(args.join(' '))};
if('function' !== typeof importScripts){
toss("initWorker1API() must be run from a Worker thread.");
}
const self = this.self;
const sqlite3 = this.sqlite3 || toss("Missing this.sqlite3 object.");
const DB = sqlite3.oo1.DB;
const getDbId = function(db){
let id = wState.idMap.get(db);
if(id) return id;
id = 'db#'+(++wState.idSeq)+'@'+db.pointer;
wState.idMap.set(db, id);
return id;
};
const wState = {
defaultDb: undefined,
idSeq: 0,
idMap: new WeakMap,
xfer: [],
open: function(opt){
const db = new DB(opt.filename);
this.dbs[getDbId(db)] = db;
if(!this.defaultDb) this.defaultDb = db;
return db;
},
close: function(db,alsoUnlink){
if(db){
delete this.dbs[getDbId(db)];
const filename = db.filename;
const pVfs = sqlite3.capi.wasm.sqlite3_wasm_db_vfs(db.pointer, 0);
db.close();
if(db===this.defaultDb) this.defaultDb = undefined;
if(alsoUnlink && filename && pVfs){
sqlite3.capi.wasm.sqlite3_wasm_vfs_unlink(pVfs, filename);
}
}
},
post: function(msg,xferList){
if(xferList && xferList.length){
self.postMessage( msg, Array.from(xferList) );
xferList.length = 0;
}else{
self.postMessage(msg);
}
},
dbs: Object.create(null),
getDb: function(id,require=true){
return this.dbs[id]
|| (require ? toss("Unknown (or closed) DB ID:",id) : undefined);
}
};
const affirmDbOpen = function(db = wState.defaultDb){
return (db && db.pointer) ? db : toss("DB is not opened.");
};
const getMsgDb = function(msgData,affirmExists=true){
const db = wState.getDb(msgData.dbId,false) || wState.defaultDb;
return affirmExists ? affirmDbOpen(db) : db;
};
const getDefaultDbId = function(){
return wState.defaultDb && getDbId(wState.defaultDb);
};
const wMsgHandler = {
open: function(ev){
const oargs = Object.create(null), args = (ev.args || Object.create(null));
if(args.simulateError){
toss("Throwing because of simulateError flag.");
}
const rc = Object.create(null);
const pDir = sqlite3.capi.sqlite3_wasmfs_opfs_dir();
if(!args.filename || ':memory:'===args.filename){
oargs.filename = args.filename || '';
}else{
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︙ | | | ︙ | |
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|
close: function(ev){
const db = getMsgDb(ev,false);
const response = {
filename: db && db.filename
};
if(db){
// Keep the "unlink" flag undocumented until we figure out how
// to apply it consistently, independent of the db storage.
wState.close(db, ((ev.args && 'object'===typeof ev.args)
? !!ev.args.unlink : false));
}
return response;
},
exec: function(ev){
const rc = (
'string'===typeof ev.args
) ? {sql: ev.args} : (ev.args || Object.create(null));
if('stmt'===rc.rowMode){
toss("Invalid rowMode for 'exec': stmt mode",
"does not work in the Worker API.");
}else if(!rc.sql){
toss("'exec' requires input SQL.");
}
const db = getMsgDb(ev);
if(rc.callback || Array.isArray(rc.resultRows)){
// Part of a copy-avoidance optimization for blobs
db._blobXfer = wState.xfer;
}
const theCallback = rc.callback;
let rowNumber = 0;
const hadColNames = !!rc.columnNames;
if('string' === typeof theCallback){
if(!hadColNames) rc.columnNames = [];
/* Treat this as a worker message type and post each
row as a message of that type. */
rc.callback = function(row,stmt){
wState.post({
type: theCallback,
columnNames: rc.columnNames,
rowNumber: ++rowNumber,
row: row
}, wState.xfer);
}
}
try {
db.exec(rc);
if(rc.callback instanceof Function){
rc.callback = theCallback;
/* Post a sentinel message to tell the client that the end
of the result set has been reached (possibly with zero
rows). */
wState.post({
type: theCallback,
columnNames: rc.columnNames,
rowNumber: null /*null to distinguish from "property not set"*/,
row: undefined /*undefined because null is a legal row value
for some rowType values, but undefined is not*/
});
}
}finally{
delete db._blobXfer;
if(rc.callback) rc.callback = theCallback;
}
return rc;
}/*exec()*/,
'config-get': function(){
const rc = Object.create(null), src = sqlite3.config;
[
'wasmfsOpfsDir', 'bigIntEnabled'
].forEach(function(k){
if(Object.getOwnPropertyDescriptor(src, k)) rc[k] = src[k];
});
rc.wasmfsOpfsEnabled = !!sqlite3.capi.sqlite3_wasmfs_opfs_dir();
rc.version = sqlite3.version;
rc.vfsList = sqlite3.capi.sqlite3_js_vfs_list();
return rc;
},
/**
TO(RE)DO, once we can abstract away access to the
JS environment's virtual filesystem. Currently this
always throws.
Response is (should be) an object:
{
buffer: Uint8Array (db file contents),
filename: the current db filename,
mimetype: 'application/x-sqlite3'
}
2022-09-30: we have shell.c:fiddle_export_db() which works fine
for disk-based databases (even if it's a virtual disk like an
Emscripten VFS). sqlite3_serialize() can return this for
:memory: and temp databases.
*/
export: function(ev){
toss("export() requires reimplementing for portability reasons.");
/**
We need to reimplement this to use the Emscripten FS
interface. That part used to be in the OO#1 API but that
dependency was removed from that level of the API.
*/
/**const db = getMsgDb(ev);
const response = {
buffer: db.exportBinaryImage(),
filename: db.filename,
mimetype: 'application/x-sqlite3'
};
wState.xfer.push(response.buffer.buffer);
return response;**/
}/*export()*/,
toss: function(ev){
toss("Testing worker exception");
}
}/*wMsgHandler*/;
self.onmessage = function(ev){
ev = ev.data;
let result, dbId = ev.dbId, evType = ev.type;
const arrivalTime = performance.now();
try {
if(wMsgHandler.hasOwnProperty(evType) &&
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|
close: function(ev){
const db = getMsgDb(ev,false);
const response = {
filename: db && db.filename
};
if(db){
wState.close(db, ((ev.args && 'object'===typeof ev.args)
? !!ev.args.unlink : false));
}
return response;
},
exec: function(ev){
const rc = (
'string'===typeof ev.args
) ? {sql: ev.args} : (ev.args || Object.create(null));
if('stmt'===rc.rowMode){
toss("Invalid rowMode for 'exec': stmt mode",
"does not work in the Worker API.");
}else if(!rc.sql){
toss("'exec' requires input SQL.");
}
const db = getMsgDb(ev);
if(rc.callback || Array.isArray(rc.resultRows)){
db._blobXfer = wState.xfer;
}
const theCallback = rc.callback;
let rowNumber = 0;
const hadColNames = !!rc.columnNames;
if('string' === typeof theCallback){
if(!hadColNames) rc.columnNames = [];
rc.callback = function(row,stmt){
wState.post({
type: theCallback,
columnNames: rc.columnNames,
rowNumber: ++rowNumber,
row: row
}, wState.xfer);
}
}
try {
db.exec(rc);
if(rc.callback instanceof Function){
rc.callback = theCallback;
wState.post({
type: theCallback,
columnNames: rc.columnNames,
rowNumber: null ,
row: undefined
});
}
}finally{
delete db._blobXfer;
if(rc.callback) rc.callback = theCallback;
}
return rc;
},
'config-get': function(){
const rc = Object.create(null), src = sqlite3.config;
[
'wasmfsOpfsDir', 'bigIntEnabled'
].forEach(function(k){
if(Object.getOwnPropertyDescriptor(src, k)) rc[k] = src[k];
});
rc.wasmfsOpfsEnabled = !!sqlite3.capi.sqlite3_wasmfs_opfs_dir();
rc.version = sqlite3.version;
rc.vfsList = sqlite3.capi.sqlite3_js_vfs_list();
return rc;
},
export: function(ev){
toss("export() requires reimplementing for portability reasons.");
},
toss: function(ev){
toss("Testing worker exception");
}
};
self.onmessage = function(ev){
ev = ev.data;
let result, dbId = ev.dbId, evType = ev.type;
const arrivalTime = performance.now();
try {
if(wMsgHandler.hasOwnProperty(evType) &&
|
︙ | | | ︙ | |
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|
result.stack = ('string'===typeof err.stack)
? err.stack.split(/\n\s*/) : err.stack;
}
if(0) console.warn("Worker is propagating an exception to main thread.",
"Reporting it _here_ for the stack trace:",err,result);
}
if(!dbId){
dbId = result.dbId/*from 'open' cmd*/
|| getDefaultDbId();
}
// Timing info is primarily for use in testing this API. It's not part of
// the public API. arrivalTime = when the worker got the message.
wState.post({
type: evType,
dbId: dbId,
messageId: ev.messageId,
workerReceivedTime: arrivalTime,
workerRespondTime: performance.now(),
departureTime: ev.departureTime,
// TODO: move the timing bits into...
//timing:{
// departure: ev.departureTime,
// workerReceived: arrivalTime,
// workerResponse: performance.now();
//},
result: result
}, wState.xfer);
};
self.postMessage({type:'sqlite3-api',result:'worker1-ready'});
}.bind({self, sqlite3});
});
/* END FILE: api/sqlite3-api-worker1.js */
/* BEGIN FILE: api/sqlite3-api-opfs.js */
/*
2022-09-18
The author disclaims copyright to this source code. In place of a
legal notice, here is a blessing:
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
***********************************************************************
This file holds the synchronous half of an sqlite3_vfs
implementation which proxies, in a synchronous fashion, the
asynchronous Origin-Private FileSystem (OPFS) APIs using a second
Worker, implemented in sqlite3-opfs-async-proxy.js. This file is
intended to be appended to the main sqlite3 JS deliverable somewhere
after sqlite3-api-oo1.js and before sqlite3-api-cleanup.js.
*/
'use strict';
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
/**
installOpfsVfs() returns a Promise which, on success, installs an
sqlite3_vfs named "opfs", suitable for use with all sqlite3 APIs
which accept a VFS. It is intended to be called via
sqlite3ApiBootstrap.initializersAsync or an equivalent mechanism.
The installed VFS uses the Origin-Private FileSystem API for
all file storage. On error it is rejected with an exception
explaining the problem. Reasons for rejection include, but are
not limited to:
- The counterpart Worker (see below) could not be loaded.
- The environment does not support OPFS. That includes when
this function is called from the main window thread.
Significant notes and limitations:
- As of this writing, OPFS is still very much in flux and only
available in bleeding-edge versions of Chrome (v102+, noting that
that number will increase as the OPFS API matures).
- The OPFS features used here are only available in dedicated Worker
threads. This file tries to detect that case, resulting in a
rejected Promise if those features do not seem to be available.
- It requires the SharedArrayBuffer and Atomics classes, and the
former is only available if the HTTP server emits the so-called
COOP and COEP response headers. These features are required for
proxying OPFS's synchronous API via the synchronous interface
required by the sqlite3_vfs API.
- This function may only be called a single time. When called, this
function removes itself from the sqlite3 object.
All arguments to this function are for internal/development purposes
only. They do not constitute a public API and may change at any
time.
The argument may optionally be a plain object with the following
configuration options:
- proxyUri: as described above
- verbose (=2): an integer 0-3. 0 disables all logging, 1 enables
logging of errors. 2 enables logging of warnings and errors. 3
additionally enables debugging info.
- sanityChecks (=false): if true, some basic sanity tests are
run on the OPFS VFS API after it's initialized, before the
returned Promise resolves.
On success, the Promise resolves to the top-most sqlite3 namespace
object and that object gets a new object installed in its
`opfs` property, containing several OPFS-specific utilities.
*/
const installOpfsVfs = function callee(options){
if(!self.SharedArrayBuffer ||
!self.Atomics ||
!self.FileSystemHandle ||
!self.FileSystemDirectoryHandle ||
!self.FileSystemFileHandle ||
!self.FileSystemFileHandle.prototype.createSyncAccessHandle ||
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result.stack = ('string'===typeof err.stack)
? err.stack.split(/\n\s*/) : err.stack;
}
if(0) console.warn("Worker is propagating an exception to main thread.",
"Reporting it _here_ for the stack trace:",err,result);
}
if(!dbId){
dbId = result.dbId
|| getDefaultDbId();
}
wState.post({
type: evType,
dbId: dbId,
messageId: ev.messageId,
workerReceivedTime: arrivalTime,
workerRespondTime: performance.now(),
departureTime: ev.departureTime,
result: result
}, wState.xfer);
};
self.postMessage({type:'sqlite3-api',result:'worker1-ready'});
}.bind({self, sqlite3});
});
'use strict';
self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
const installOpfsVfs = function callee(options){
if(!self.SharedArrayBuffer ||
!self.Atomics ||
!self.FileSystemHandle ||
!self.FileSystemDirectoryHandle ||
!self.FileSystemFileHandle ||
!self.FileSystemFileHandle.prototype.createSyncAccessHandle ||
|
︙ | | | ︙ | |
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const error = (...args)=>logImpl(0, ...args);
const toss = function(...args){throw new Error(args.join(' '))};
const capi = sqlite3.capi;
const wasm = capi.wasm;
const sqlite3_vfs = capi.sqlite3_vfs;
const sqlite3_file = capi.sqlite3_file;
const sqlite3_io_methods = capi.sqlite3_io_methods;
/**
Generic utilities for working with OPFS. This will get filled out
by the Promise setup and, on success, installed as sqlite3.opfs.
*/
const opfsUtil = Object.create(null);
/**
Not part of the public API. Solely for internal/development
use.
*/
opfsUtil.metrics = {
dump: function(){
let k, n = 0, t = 0, w = 0;
for(k in state.opIds){
const m = metrics[k];
n += m.count;
t += m.time;
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const error = (...args)=>logImpl(0, ...args);
const toss = function(...args){throw new Error(args.join(' '))};
const capi = sqlite3.capi;
const wasm = capi.wasm;
const sqlite3_vfs = capi.sqlite3_vfs;
const sqlite3_file = capi.sqlite3_file;
const sqlite3_io_methods = capi.sqlite3_io_methods;
const opfsUtil = Object.create(null);
opfsUtil.metrics = {
dump: function(){
let k, n = 0, t = 0, w = 0;
for(k in state.opIds){
const m = metrics[k];
n += m.count;
t += m.time;
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}
let s = metrics.s11n = Object.create(null);
s = s.serialize = Object.create(null);
s.count = s.time = 0;
s = metrics.s11n.deserialize = Object.create(null);
s.count = s.time = 0;
}
}/*metrics*/;
const promiseReject = function(err){
opfsVfs.dispose();
return promiseReject_(err);
};
const W = new Worker(options.proxyUri);
W._originalOnError = W.onerror /* will be restored later */;
W.onerror = function(err){
// The error object doesn't contain any useful info when the
// failure is, e.g., that the remote script is 404.
error("Error initializing OPFS asyncer:",err);
promiseReject(new Error("Loading OPFS async Worker failed for unknown reasons."));
};
const pDVfs = capi.sqlite3_vfs_find(null)/*pointer to default VFS*/;
const dVfs = pDVfs
? new sqlite3_vfs(pDVfs)
: null /* dVfs will be null when sqlite3 is built with
SQLITE_OS_OTHER. Though we cannot currently handle
that case, the hope is to eventually be able to. */;
const opfsVfs = new sqlite3_vfs();
const opfsIoMethods = new sqlite3_io_methods();
opfsVfs.$iVersion = 2/*yes, two*/;
opfsVfs.$szOsFile = capi.sqlite3_file.structInfo.sizeof;
opfsVfs.$mxPathname = 1024/*sure, why not?*/;
opfsVfs.$zName = wasm.allocCString("opfs");
// All C-side memory of opfsVfs is zeroed out, but just to be explicit:
opfsVfs.$xDlOpen = opfsVfs.$xDlError = opfsVfs.$xDlSym = opfsVfs.$xDlClose = null;
opfsVfs.ondispose = [
'$zName', opfsVfs.$zName,
'cleanup default VFS wrapper', ()=>(dVfs ? dVfs.dispose() : null),
'cleanup opfsIoMethods', ()=>opfsIoMethods.dispose()
];
/**
Pedantic sidebar about opfsVfs.ondispose: the entries in that array
are items to clean up when opfsVfs.dispose() is called, but in this
environment it will never be called. The VFS instance simply
hangs around until the WASM module instance is cleaned up. We
"could" _hypothetically_ clean it up by "importing" an
sqlite3_os_end() impl into the wasm build, but the shutdown order
of the wasm engine and the JS one are undefined so there is no
guaranty that the opfsVfs instance would be available in one
environment or the other when sqlite3_os_end() is called (_if_ it
gets called at all in a wasm build, which is undefined).
*/
/**
State which we send to the async-api Worker or share with it.
This object must initially contain only cloneable or sharable
objects. After the worker's "inited" message arrives, other types
of data may be added to it.
For purposes of Atomics.wait() and Atomics.notify(), we use a
SharedArrayBuffer with one slot reserved for each of the API
proxy's methods. The sync side of the API uses Atomics.wait()
on the corresponding slot and the async side uses
Atomics.notify() on that slot.
The approach of using a single SAB to serialize comms for all
instances might(?) lead to deadlock situations in multi-db
cases. We should probably have one SAB here with a single slot
for locking a per-file initialization step and then allocate a
separate SAB like the above one for each file. That will
require a bit of acrobatics but should be feasible. The most
problematic part is that xOpen() would have to use
postMessage() to communicate its SharedArrayBuffer, and mixing
that approach with Atomics.wait/notify() gets a bit messy.
*/
const state = Object.create(null);
state.verbose = options.verbose;
state.littleEndian = (()=>{
const buffer = new ArrayBuffer(2);
new DataView(buffer).setInt16(0, 256, true /* ==>littleEndian */);
// Int16Array uses the platform's endianness.
return new Int16Array(buffer)[0] === 256;
})();
/**
Whether the async counterpart should log exceptions to
the serialization channel. That produces a great deal of
noise for seemingly innocuous things like xAccess() checks
for missing files, so this option may have one of 3 values:
0 = no exception logging
1 = only log exceptions for "significant" ops like xOpen(),
xRead(), and xWrite().
2 = log all exceptions.
*/
state.asyncS11nExceptions = 1;
/* Size of file I/O buffer block. 64k = max sqlite3 page size, and
xRead/xWrite() will never deal in blocks larger than that. */
state.fileBufferSize = 1024 * 64;
state.sabS11nOffset = state.fileBufferSize;
/**
The size of the block in our SAB for serializing arguments and
result values. Needs to be large enough to hold serialized
values of any of the proxied APIs. Filenames are the largest
part but are limited to opfsVfs.$mxPathname bytes.
*/
state.sabS11nSize = opfsVfs.$mxPathname * 2;
/**
The SAB used for all data I/O between the synchronous and
async halves (file i/o and arg/result s11n).
*/
state.sabIO = new SharedArrayBuffer(
state.fileBufferSize/* file i/o block */
+ state.sabS11nSize/* argument/result serialization block */
);
state.opIds = Object.create(null);
const metrics = Object.create(null);
{
/* Indexes for use in our SharedArrayBuffer... */
let i = 0;
/* SAB slot used to communicate which operation is desired
between both workers. This worker writes to it and the other
listens for changes. */
state.opIds.whichOp = i++;
/* Slot for storing return values. This worker listens to that
slot and the other worker writes to it. */
state.opIds.rc = i++;
/* Each function gets an ID which this worker writes to
the whichOp slot. The async-api worker uses Atomic.wait()
on the whichOp slot to figure out which operation to run
next. */
state.opIds.xAccess = i++;
state.opIds.xClose = i++;
state.opIds.xDelete = i++;
state.opIds.xDeleteNoWait = i++;
state.opIds.xFileControl = i++;
state.opIds.xFileSize = i++;
state.opIds.xLock = i++;
state.opIds.xOpen = i++;
state.opIds.xRead = i++;
state.opIds.xSleep = i++;
state.opIds.xSync = i++;
state.opIds.xTruncate = i++;
state.opIds.xUnlock = i++;
state.opIds.xWrite = i++;
state.opIds.mkdir = i++;
state.opIds['opfs-async-metrics'] = i++;
state.opIds['opfs-async-shutdown'] = i++;
/* The retry slot is used by the async part for wait-and-retry
semantics. Though we could hypothetically use the xSleep slot
for that, doing so might lead to undesired side effects. */
state.opIds.retry = i++;
state.sabOP = new SharedArrayBuffer(
i * 4/* ==sizeof int32, noting that Atomics.wait() and friends
can only function on Int32Array views of an SAB. */);
opfsUtil.metrics.reset();
}
/**
SQLITE_xxx constants to export to the async worker
counterpart...
*/
state.sq3Codes = Object.create(null);
[
'SQLITE_ERROR', 'SQLITE_IOERR',
'SQLITE_NOTFOUND', 'SQLITE_MISUSE',
'SQLITE_IOERR_READ', 'SQLITE_IOERR_SHORT_READ',
'SQLITE_IOERR_WRITE', 'SQLITE_IOERR_FSYNC',
'SQLITE_IOERR_TRUNCATE', 'SQLITE_IOERR_DELETE',
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|
}
let s = metrics.s11n = Object.create(null);
s = s.serialize = Object.create(null);
s.count = s.time = 0;
s = metrics.s11n.deserialize = Object.create(null);
s.count = s.time = 0;
}
};
const promiseReject = function(err){
opfsVfs.dispose();
return promiseReject_(err);
};
const W = new Worker(options.proxyUri);
W._originalOnError = W.onerror ;
W.onerror = function(err){
error("Error initializing OPFS asyncer:",err);
promiseReject(new Error("Loading OPFS async Worker failed for unknown reasons."));
};
const pDVfs = capi.sqlite3_vfs_find(null);
const dVfs = pDVfs
? new sqlite3_vfs(pDVfs)
: null ;
const opfsVfs = new sqlite3_vfs();
const opfsIoMethods = new sqlite3_io_methods();
opfsVfs.$iVersion = 2;
opfsVfs.$szOsFile = capi.sqlite3_file.structInfo.sizeof;
opfsVfs.$mxPathname = 1024;
opfsVfs.$zName = wasm.allocCString("opfs");
opfsVfs.$xDlOpen = opfsVfs.$xDlError = opfsVfs.$xDlSym = opfsVfs.$xDlClose = null;
opfsVfs.ondispose = [
'$zName', opfsVfs.$zName,
'cleanup default VFS wrapper', ()=>(dVfs ? dVfs.dispose() : null),
'cleanup opfsIoMethods', ()=>opfsIoMethods.dispose()
];
const state = Object.create(null);
state.verbose = options.verbose;
state.littleEndian = (()=>{
const buffer = new ArrayBuffer(2);
new DataView(buffer).setInt16(0, 256, true );
return new Int16Array(buffer)[0] === 256;
})();
state.asyncS11nExceptions = 1;
state.fileBufferSize = 1024 * 64;
state.sabS11nOffset = state.fileBufferSize;
state.sabS11nSize = opfsVfs.$mxPathname * 2;
state.sabIO = new SharedArrayBuffer(
state.fileBufferSize
+ state.sabS11nSize
);
state.opIds = Object.create(null);
const metrics = Object.create(null);
{
let i = 0;
state.opIds.whichOp = i++;
state.opIds.rc = i++;
state.opIds.xAccess = i++;
state.opIds.xClose = i++;
state.opIds.xDelete = i++;
state.opIds.xDeleteNoWait = i++;
state.opIds.xFileControl = i++;
state.opIds.xFileSize = i++;
state.opIds.xLock = i++;
state.opIds.xOpen = i++;
state.opIds.xRead = i++;
state.opIds.xSleep = i++;
state.opIds.xSync = i++;
state.opIds.xTruncate = i++;
state.opIds.xUnlock = i++;
state.opIds.xWrite = i++;
state.opIds.mkdir = i++;
state.opIds['opfs-async-metrics'] = i++;
state.opIds['opfs-async-shutdown'] = i++;
state.opIds.retry = i++;
state.sabOP = new SharedArrayBuffer(
i * 4);
opfsUtil.metrics.reset();
}
state.sq3Codes = Object.create(null);
[
'SQLITE_ERROR', 'SQLITE_IOERR',
'SQLITE_NOTFOUND', 'SQLITE_MISUSE',
'SQLITE_IOERR_READ', 'SQLITE_IOERR_SHORT_READ',
'SQLITE_IOERR_WRITE', 'SQLITE_IOERR_FSYNC',
'SQLITE_IOERR_TRUNCATE', 'SQLITE_IOERR_DELETE',
|
︙ | | | ︙ | |
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|
'SQLITE_OPEN_READONLY'
].forEach((k)=>{
if(undefined === (state.sq3Codes[k] = capi[k])){
toss("Maintenance required: not found:",k);
}
});
/**
Runs the given operation (by name) in the async worker
counterpart, waits for its response, and returns the result
which the async worker writes to SAB[state.opIds.rc]. The
2nd and subsequent arguments must be the aruguments for the
async op.
*/
const opRun = (op,...args)=>{
const opNdx = state.opIds[op] || toss("Invalid op ID:",op);
state.s11n.serialize(...args);
Atomics.store(state.sabOPView, state.opIds.rc, -1);
Atomics.store(state.sabOPView, state.opIds.whichOp, opNdx);
Atomics.notify(state.sabOPView, state.opIds.whichOp)
/* async thread will take over here */;
const t = performance.now();
Atomics.wait(state.sabOPView, state.opIds.rc, -1)
/* When this wait() call returns, the async half will have
completed the operation and reported its results. */;
const rc = Atomics.load(state.sabOPView, state.opIds.rc);
metrics[op].wait += performance.now() - t;
if(rc && state.asyncS11nExceptions){
const err = state.s11n.deserialize();
if(err) error(op+"() async error:",...err);
}
return rc;
};
const initS11n = ()=>{
/**
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ACHTUNG: this code is 100% duplicated in the other half of
this proxy! The documentation is maintained in the
"synchronous half".
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
This proxy de/serializes cross-thread function arguments and
output-pointer values via the state.sabIO SharedArrayBuffer,
using the region defined by (state.sabS11nOffset,
state.sabS11nOffset]. Only one dataset is recorded at a time.
This is not a general-purpose format. It only supports the
range of operations, and data sizes, needed by the
sqlite3_vfs and sqlite3_io_methods operations. Serialized
data are transient and this serialization algorithm may
change at any time.
The data format can be succinctly summarized as:
Nt...Td...D
Where:
- N = number of entries (1 byte)
- t = type ID of first argument (1 byte)
- ...T = type IDs of the 2nd and subsequent arguments (1 byte
each).
- d = raw bytes of first argument (per-type size).
- ...D = raw bytes of the 2nd and subsequent arguments (per-type
size).
All types except strings have fixed sizes. Strings are stored
using their TextEncoder/TextDecoder representations. It would
arguably make more sense to store them as Int16Arrays of
their JS character values, but how best/fastest to get that
in and out of string form is an open point. Initial
experimentation with that approach did not gain us any speed.
Historical note: this impl was initially about 1% this size by
using using JSON.stringify/parse(), but using fit-to-purpose
serialization saves considerable runtime.
*/
if(state.s11n) return state.s11n;
const textDecoder = new TextDecoder(),
textEncoder = new TextEncoder('utf-8'),
viewU8 = new Uint8Array(state.sabIO, state.sabS11nOffset, state.sabS11nSize),
viewDV = new DataView(state.sabIO, state.sabS11nOffset, state.sabS11nSize);
state.s11n = Object.create(null);
/* Only arguments and return values of these types may be
serialized. This covers the whole range of types needed by the
sqlite3_vfs API. */
const TypeIds = Object.create(null);
TypeIds.number = { id: 1, size: 8, getter: 'getFloat64', setter: 'setFloat64' };
TypeIds.bigint = { id: 2, size: 8, getter: 'getBigInt64', setter: 'setBigInt64' };
TypeIds.boolean = { id: 3, size: 4, getter: 'getInt32', setter: 'setInt32' };
TypeIds.string = { id: 4 };
const getTypeId = (v)=>(
TypeIds[typeof v]
|| toss("Maintenance required: this value type cannot be serialized.",v)
);
const getTypeIdById = (tid)=>{
switch(tid){
case TypeIds.number.id: return TypeIds.number;
case TypeIds.bigint.id: return TypeIds.bigint;
case TypeIds.boolean.id: return TypeIds.boolean;
case TypeIds.string.id: return TypeIds.string;
default: toss("Invalid type ID:",tid);
}
};
/**
Returns an array of the deserialized state stored by the most
recent serialize() operation (from from this thread or the
counterpart thread), or null if the serialization buffer is empty.
*/
state.s11n.deserialize = function(){
++metrics.s11n.deserialize.count;
const t = performance.now();
const argc = viewU8[0];
const rc = argc ? [] : null;
if(argc){
const typeIds = [];
let offset = 1, i, n, v;
for(i = 0; i < argc; ++i, ++offset){
typeIds.push(getTypeIdById(viewU8[offset]));
}
for(i = 0; i < argc; ++i){
const t = typeIds[i];
if(t.getter){
v = viewDV[t.getter](offset, state.littleEndian);
offset += t.size;
}else{/*String*/
n = viewDV.getInt32(offset, state.littleEndian);
offset += 4;
v = textDecoder.decode(viewU8.slice(offset, offset+n));
offset += n;
}
rc.push(v);
}
}
//log("deserialize:",argc, rc);
metrics.s11n.deserialize.time += performance.now() - t;
return rc;
};
/**
Serializes all arguments to the shared buffer for consumption
by the counterpart thread.
This routine is only intended for serializing OPFS VFS
arguments and (in at least one special case) result values,
and the buffer is sized to be able to comfortably handle
those.
If passed no arguments then it zeroes out the serialization
state.
*/
state.s11n.serialize = function(...args){
const t = performance.now();
++metrics.s11n.serialize.count;
if(args.length){
//log("serialize():",args);
const typeIds = [];
let i = 0, offset = 1;
viewU8[0] = args.length & 0xff /* header = # of args */;
for(; i < args.length; ++i, ++offset){
/* Write the TypeIds.id value into the next args.length
bytes. */
typeIds.push(getTypeId(args[i]));
viewU8[offset] = typeIds[i].id;
}
for(i = 0; i < args.length; ++i) {
/* Deserialize the following bytes based on their
corresponding TypeIds.id from the header. */
const t = typeIds[i];
if(t.setter){
viewDV[t.setter](offset, args[i], state.littleEndian);
offset += t.size;
}else{/*String*/
const s = textEncoder.encode(args[i]);
viewDV.setInt32(offset, s.byteLength, state.littleEndian);
offset += 4;
viewU8.set(s, offset);
offset += s.byteLength;
}
}
//log("serialize() result:",viewU8.slice(0,offset));
}else{
viewU8[0] = 0;
}
metrics.s11n.serialize.time += performance.now() - t;
};
return state.s11n;
}/*initS11n()*/;
/**
Generates a random ASCII string len characters long, intended for
use as a temporary file name.
*/
const randomFilename = function f(len=16){
if(!f._chars){
f._chars = "abcdefghijklmnopqrstuvwxyz"+
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"+
"012346789";
f._n = f._chars.length;
}
const a = [];
let i = 0;
for( ; i < len; ++i){
const ndx = Math.random() * (f._n * 64) % f._n | 0;
a[i] = f._chars[ndx];
}
return a.join('');
};
/**
Map of sqlite3_file pointers to objects constructed by xOpen().
*/
const __openFiles = Object.create(null);
/**
Installs a StructBinder-bound function pointer member of the
given name and function in the given StructType target object.
It creates a WASM proxy for the given function and arranges for
that proxy to be cleaned up when tgt.dispose() is called. Throws
on the slightest hint of error (e.g. tgt is-not-a StructType,
name does not map to a struct-bound member, etc.).
Returns a proxy for this function which is bound to tgt and takes
2 args (name,func). That function returns the same thing,
permitting calls to be chained.
If called with only 1 arg, it has no side effects but returns a
func with the same signature as described above.
*/
const installMethod = function callee(tgt, name, func){
if(!(tgt instanceof sqlite3.StructBinder.StructType)){
toss("Usage error: target object is-not-a StructType.");
}
if(1===arguments.length){
return (n,f)=>callee(tgt,n,f);
}
|
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|
'SQLITE_OPEN_READONLY'
].forEach((k)=>{
if(undefined === (state.sq3Codes[k] = capi[k])){
toss("Maintenance required: not found:",k);
}
});
const opRun = (op,...args)=>{
const opNdx = state.opIds[op] || toss("Invalid op ID:",op);
state.s11n.serialize(...args);
Atomics.store(state.sabOPView, state.opIds.rc, -1);
Atomics.store(state.sabOPView, state.opIds.whichOp, opNdx);
Atomics.notify(state.sabOPView, state.opIds.whichOp)
;
const t = performance.now();
Atomics.wait(state.sabOPView, state.opIds.rc, -1)
;
const rc = Atomics.load(state.sabOPView, state.opIds.rc);
metrics[op].wait += performance.now() - t;
if(rc && state.asyncS11nExceptions){
const err = state.s11n.deserialize();
if(err) error(op+"() async error:",...err);
}
return rc;
};
const initS11n = ()=>{
if(state.s11n) return state.s11n;
const textDecoder = new TextDecoder(),
textEncoder = new TextEncoder('utf-8'),
viewU8 = new Uint8Array(state.sabIO, state.sabS11nOffset, state.sabS11nSize),
viewDV = new DataView(state.sabIO, state.sabS11nOffset, state.sabS11nSize);
state.s11n = Object.create(null);
const TypeIds = Object.create(null);
TypeIds.number = { id: 1, size: 8, getter: 'getFloat64', setter: 'setFloat64' };
TypeIds.bigint = { id: 2, size: 8, getter: 'getBigInt64', setter: 'setBigInt64' };
TypeIds.boolean = { id: 3, size: 4, getter: 'getInt32', setter: 'setInt32' };
TypeIds.string = { id: 4 };
const getTypeId = (v)=>(
TypeIds[typeof v]
|| toss("Maintenance required: this value type cannot be serialized.",v)
);
const getTypeIdById = (tid)=>{
switch(tid){
case TypeIds.number.id: return TypeIds.number;
case TypeIds.bigint.id: return TypeIds.bigint;
case TypeIds.boolean.id: return TypeIds.boolean;
case TypeIds.string.id: return TypeIds.string;
default: toss("Invalid type ID:",tid);
}
};
state.s11n.deserialize = function(){
++metrics.s11n.deserialize.count;
const t = performance.now();
const argc = viewU8[0];
const rc = argc ? [] : null;
if(argc){
const typeIds = [];
let offset = 1, i, n, v;
for(i = 0; i < argc; ++i, ++offset){
typeIds.push(getTypeIdById(viewU8[offset]));
}
for(i = 0; i < argc; ++i){
const t = typeIds[i];
if(t.getter){
v = viewDV[t.getter](offset, state.littleEndian);
offset += t.size;
}else{
n = viewDV.getInt32(offset, state.littleEndian);
offset += 4;
v = textDecoder.decode(viewU8.slice(offset, offset+n));
offset += n;
}
rc.push(v);
}
}
metrics.s11n.deserialize.time += performance.now() - t;
return rc;
};
state.s11n.serialize = function(...args){
const t = performance.now();
++metrics.s11n.serialize.count;
if(args.length){
const typeIds = [];
let i = 0, offset = 1;
viewU8[0] = args.length & 0xff ;
for(; i < args.length; ++i, ++offset){
typeIds.push(getTypeId(args[i]));
viewU8[offset] = typeIds[i].id;
}
for(i = 0; i < args.length; ++i) {
const t = typeIds[i];
if(t.setter){
viewDV[t.setter](offset, args[i], state.littleEndian);
offset += t.size;
}else{
const s = textEncoder.encode(args[i]);
viewDV.setInt32(offset, s.byteLength, state.littleEndian);
offset += 4;
viewU8.set(s, offset);
offset += s.byteLength;
}
}
}else{
viewU8[0] = 0;
}
metrics.s11n.serialize.time += performance.now() - t;
};
return state.s11n;
};
const randomFilename = function f(len=16){
if(!f._chars){
f._chars = "abcdefghijklmnopqrstuvwxyz"+
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"+
"012346789";
f._n = f._chars.length;
}
const a = [];
let i = 0;
for( ; i < len; ++i){
const ndx = Math.random() * (f._n * 64) % f._n | 0;
a[i] = f._chars[ndx];
}
return a.join('');
};
const __openFiles = Object.create(null);
const installMethod = function callee(tgt, name, func){
if(!(tgt instanceof sqlite3.StructBinder.StructType)){
toss("Usage error: target object is-not-a StructType.");
}
if(1===arguments.length){
return (n,f)=>callee(tgt,n,f);
}
|
︙ | | | ︙ | |
12366
12367
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12458
|
};
callee.removeFuncList = function(){
if(this.ondispose.__removeFuncList){
this.ondispose.__removeFuncList.forEach(
(v,ndx)=>{
if('number'===typeof v){
try{wasm.uninstallFunction(v)}
catch(e){/*ignore*/}
}
/* else it's a descriptive label for the next number in
the list. */
}
);
delete this.ondispose.__removeFuncList;
}
};
}/*static init*/
const sigN = tgt.memberSignature(name);
if(sigN.length<2){
toss("Member",name," is not a function pointer. Signature =",sigN);
}
const memKey = tgt.memberKey(name);
const fProxy = 0
/** This middle-man proxy is only for use during development, to
confirm that we always pass the proper number of
arguments. We know that the C-level code will always use the
correct argument count. */
? callee.argcProxy(func, sigN)
: func;
const pFunc = wasm.installFunction(fProxy, tgt.memberSignature(name, true));
tgt[memKey] = pFunc;
if(!tgt.ondispose) tgt.ondispose = [];
if(!tgt.ondispose.__removeFuncList){
tgt.ondispose.push('ondispose.__removeFuncList handler',
callee.removeFuncList);
tgt.ondispose.__removeFuncList = [];
}
tgt.ondispose.__removeFuncList.push(memKey, pFunc);
return (n,f)=>callee(tgt, n, f);
}/*installMethod*/;
const opTimer = Object.create(null);
opTimer.op = undefined;
opTimer.start = undefined;
const mTimeStart = (op)=>{
opTimer.start = performance.now();
opTimer.op = op;
++metrics[op].count;
};
const mTimeEnd = ()=>(
metrics[opTimer.op].time += performance.now() - opTimer.start
);
/**
Impls for the sqlite3_io_methods methods. Maintenance reminder:
members are in alphabetical order to simplify finding them.
*/
const ioSyncWrappers = {
xCheckReservedLock: function(pFile,pOut){
/**
As of late 2022, only a single lock can be held on an OPFS
file. We have no way of checking whether any _other_ db
connection has a lock except by trying to obtain and (on
success) release a sync-handle for it, but doing so would
involve an inherent race condition. For the time being,
pending a better solution, we simply report whether the
given pFile instance has a lock.
*/
const f = __openFiles[pFile];
wasm.setMemValue(pOut, f.lockMode ? 1 : 0, 'i32');
return 0;
},
xClose: function(pFile){
mTimeStart('xClose');
let rc = 0;
const f = __openFiles[pFile];
if(f){
delete __openFiles[pFile];
rc = opRun('xClose', pFile);
if(f.sq3File) f.sq3File.dispose();
}
mTimeEnd();
return rc;
},
xDeviceCharacteristics: function(pFile){
//debug("xDeviceCharacteristics(",pFile,")");
return capi.SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN;
},
xFileControl: function(pFile, opId, pArg){
mTimeStart('xFileControl');
const rc = (capi.SQLITE_FCNTL_SYNC===opId)
? opRun('xSync', pFile, 0)
: capi.SQLITE_NOTFOUND;
|
|
|
<
<
>
|
<
<
<
|
|
<
<
<
|
<
<
<
<
<
<
<
<
|
|
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8872
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8876
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8881
8882
8883
|
};
callee.removeFuncList = function(){
if(this.ondispose.__removeFuncList){
this.ondispose.__removeFuncList.forEach(
(v,ndx)=>{
if('number'===typeof v){
try{wasm.uninstallFunction(v)}
catch(e){}
}
}
);
delete this.ondispose.__removeFuncList;
}
};
}
const sigN = tgt.memberSignature(name);
if(sigN.length<2){
toss("Member",name," is not a function pointer. Signature =",sigN);
}
const memKey = tgt.memberKey(name);
const fProxy = 0
? callee.argcProxy(func, sigN)
: func;
const pFunc = wasm.installFunction(fProxy, tgt.memberSignature(name, true));
tgt[memKey] = pFunc;
if(!tgt.ondispose) tgt.ondispose = [];
if(!tgt.ondispose.__removeFuncList){
tgt.ondispose.push('ondispose.__removeFuncList handler',
callee.removeFuncList);
tgt.ondispose.__removeFuncList = [];
}
tgt.ondispose.__removeFuncList.push(memKey, pFunc);
return (n,f)=>callee(tgt, n, f);
};
const opTimer = Object.create(null);
opTimer.op = undefined;
opTimer.start = undefined;
const mTimeStart = (op)=>{
opTimer.start = performance.now();
opTimer.op = op;
++metrics[op].count;
};
const mTimeEnd = ()=>(
metrics[opTimer.op].time += performance.now() - opTimer.start
);
const ioSyncWrappers = {
xCheckReservedLock: function(pFile,pOut){
const f = __openFiles[pFile];
wasm.setMemValue(pOut, f.lockMode ? 1 : 0, 'i32');
return 0;
},
xClose: function(pFile){
mTimeStart('xClose');
let rc = 0;
const f = __openFiles[pFile];
if(f){
delete __openFiles[pFile];
rc = opRun('xClose', pFile);
if(f.sq3File) f.sq3File.dispose();
}
mTimeEnd();
return rc;
},
xDeviceCharacteristics: function(pFile){
return capi.SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN;
},
xFileControl: function(pFile, opId, pArg){
mTimeStart('xFileControl');
const rc = (capi.SQLITE_FCNTL_SYNC===opId)
? opRun('xSync', pFile, 0)
: capi.SQLITE_NOTFOUND;
|
︙ | | | ︙ | |
12485
12486
12487
12488
12489
12490
12491
12492
12493
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12501
12502
12503
12504
12505
12506
12507
12508
12509
12510
12511
12512
12513
12514
12515
|
xRead: function(pFile,pDest,n,offset64){
mTimeStart('xRead');
const f = __openFiles[pFile];
let rc;
try {
rc = opRun('xRead',pFile, n, Number(offset64));
if(0===rc || capi.SQLITE_IOERR_SHORT_READ===rc){
/**
Results get written to the SharedArrayBuffer f.sabView.
Because the heap is _not_ a SharedArrayBuffer, we have
to copy the results. TypedArray.set() seems to be the
fastest way to copy this. */
wasm.heap8u().set(f.sabView.subarray(0, n), pDest);
}
}catch(e){
error("xRead(",arguments,") failed:",e,f);
rc = capi.SQLITE_IOERR_READ;
}
mTimeEnd();
return rc;
},
xSync: function(pFile,flags){
++metrics.xSync.count;
return 0; // impl'd in xFileControl()
},
xTruncate: function(pFile,sz64){
mTimeStart('xTruncate');
const rc = opRun('xTruncate', pFile, Number(sz64));
mTimeEnd();
return rc;
},
|
|
<
<
<
<
|
|
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8911
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8935
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|
xRead: function(pFile,pDest,n,offset64){
mTimeStart('xRead');
const f = __openFiles[pFile];
let rc;
try {
rc = opRun('xRead',pFile, n, Number(offset64));
if(0===rc || capi.SQLITE_IOERR_SHORT_READ===rc){
wasm.heap8u().set(f.sabView.subarray(0, n), pDest);
}
}catch(e){
error("xRead(",arguments,") failed:",e,f);
rc = capi.SQLITE_IOERR_READ;
}
mTimeEnd();
return rc;
},
xSync: function(pFile,flags){
++metrics.xSync.count;
return 0;
},
xTruncate: function(pFile,sz64){
mTimeStart('xTruncate');
const rc = opRun('xTruncate', pFile, Number(sz64));
mTimeEnd();
return rc;
},
|
︙ | | | ︙ | |
12535
12536
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|
}catch(e){
error("xWrite(",arguments,") failed:",e,f);
rc = capi.SQLITE_IOERR_WRITE;
}
mTimeEnd();
return rc;
}
}/*ioSyncWrappers*/;
/**
Impls for the sqlite3_vfs methods. Maintenance reminder: members
are in alphabetical order to simplify finding them.
*/
const vfsSyncWrappers = {
xAccess: function(pVfs,zName,flags,pOut){
mTimeStart('xAccess');
const rc = opRun('xAccess', wasm.cstringToJs(zName));
wasm.setMemValue( pOut, (rc ? 0 : 1), 'i32' );
mTimeEnd();
return 0;
},
xCurrentTime: function(pVfs,pOut){
/* If it turns out that we need to adjust for timezone, see:
https://stackoverflow.com/a/11760121/1458521 */
wasm.setMemValue(pOut, 2440587.5 + (new Date().getTime()/86400000),
'double');
return 0;
},
xCurrentTimeInt64: function(pVfs,pOut){
// TODO: confirm that this calculation is correct
wasm.setMemValue(pOut, (2440587.5 * 86400000) + new Date().getTime(),
'i64');
return 0;
},
xDelete: function(pVfs, zName, doSyncDir){
mTimeStart('xDelete');
opRun('xDelete', wasm.cstringToJs(zName), doSyncDir, false);
/* We're ignoring errors because we cannot yet differentiate
between harmless and non-harmless failures. */
mTimeEnd();
return 0;
},
xFullPathname: function(pVfs,zName,nOut,pOut){
/* Until/unless we have some notion of "current dir"
in OPFS, simply copy zName to pOut... */
const i = wasm.cstrncpy(pOut, zName, nOut);
return i<nOut ? 0 : capi.SQLITE_CANTOPEN
/*CANTOPEN is required by the docs but SQLITE_RANGE would be a closer match*/;
},
xGetLastError: function(pVfs,nOut,pOut){
/* TODO: store exception.message values from the async
partner in a dedicated SharedArrayBuffer, noting that we'd have
to encode them... TextEncoder can do that for us. */
warn("OPFS xGetLastError() has nothing sensible to return.");
return 0;
},
//xSleep is optionally defined below
xOpen: function f(pVfs, zName, pFile, flags, pOutFlags){
mTimeStart('xOpen');
if(0===zName){
zName = randomFilename();
}else if('number'===typeof zName){
zName = wasm.cstringToJs(zName);
}
const fh = Object.create(null);
fh.fid = pFile;
fh.filename = zName;
fh.sab = new SharedArrayBuffer(state.fileBufferSize);
fh.flags = flags;
const rc = opRun('xOpen', pFile, zName, flags);
if(!rc){
/* Recall that sqlite3_vfs::xClose() will be called, even on
error, unless pFile->pMethods is NULL. */
if(fh.readOnly){
wasm.setMemValue(pOutFlags, capi.SQLITE_OPEN_READONLY, 'i32');
}
__openFiles[pFile] = fh;
fh.sabView = state.sabFileBufView;
fh.sq3File = new sqlite3_file(pFile);
fh.sq3File.$pMethods = opfsIoMethods.pointer;
fh.lockType = capi.SQLITE_LOCK_NONE;
}
mTimeEnd();
return rc;
}/*xOpen()*/
}/*vfsSyncWrappers*/;
if(dVfs){
opfsVfs.$xRandomness = dVfs.$xRandomness;
opfsVfs.$xSleep = dVfs.$xSleep;
}
if(!opfsVfs.$xRandomness){
/* If the default VFS has no xRandomness(), add a basic JS impl... */
vfsSyncWrappers.xRandomness = function(pVfs, nOut, pOut){
const heap = wasm.heap8u();
let i = 0;
for(; i < nOut; ++i) heap[pOut + i] = (Math.random()*255000) & 0xFF;
return i;
};
}
if(!opfsVfs.$xSleep){
/* If we can inherit an xSleep() impl from the default VFS then
assume it's sane and use it, otherwise install a JS-based
one. */
vfsSyncWrappers.xSleep = function(pVfs,ms){
Atomics.wait(state.sabOPView, state.opIds.xSleep, 0, ms);
return 0;
};
}
/* Install the vfs/io_methods into their C-level shared instances... */
for(let k of Object.keys(ioSyncWrappers)){
installMethod(opfsIoMethods, k, ioSyncWrappers[k]);
}
for(let k of Object.keys(vfsSyncWrappers)){
installMethod(opfsVfs, k, vfsSyncWrappers[k]);
}
/**
Syncronously deletes the given OPFS filesystem entry, ignoring
any errors. As this environment has no notion of "current
directory", the given name must be an absolute path. If the 2nd
argument is truthy, deletion is recursive (use with caution!).
Returns true if the deletion succeeded and false if it fails,
but cannot report the nature of the failure.
*/
opfsUtil.deleteEntry = function(fsEntryName,recursive=false){
mTimeStart('xDelete');
const rc = opRun('xDelete', fsEntryName, 0, recursive);
mTimeEnd();
return 0===rc;
};
/**
Synchronously creates the given directory name, recursively, in
the OPFS filesystem. Returns true if it succeeds or the
directory already exists, else false.
*/
opfsUtil.mkdir = function(absDirName){
mTimeStart('mkdir');
const rc = opRun('mkdir', absDirName);
mTimeEnd();
return 0===rc;
};
/**
Synchronously checks whether the given OPFS filesystem exists,
returning true if it does, false if it doesn't.
*/
opfsUtil.entryExists = function(fsEntryName){
return 0===opRun('xAccess', fsEntryName);
};
/**
Generates a random ASCII string, intended for use as a
temporary file name. Its argument is the length of the string,
defaulting to 16.
*/
opfsUtil.randomFilename = randomFilename;
/**
Re-registers the OPFS VFS. This is intended only for odd use
cases which have to call sqlite3_shutdown() as part of their
initialization process, which will unregister the VFS
registered by installOpfsVfs(). If passed a truthy value, the
OPFS VFS is registered as the default VFS, else it is not made
the default. Returns the result of the the
sqlite3_vfs_register() call.
Design note: the problem of having to re-register things after
a shutdown/initialize pair is more general. How to best plug
that in to the library is unclear. In particular, we cannot
hook in to any C-side calls to sqlite3_initialize(), so we
cannot add an after-initialize callback mechanism.
*/
opfsUtil.registerVfs = (asDefault=false)=>{
return capi.wasm.exports.sqlite3_vfs_register(
opfsVfs.pointer, asDefault ? 1 : 0
);
};
/**
Only for test/development use.
*/
opfsUtil.debug = {
asyncShutdown: ()=>{
warn("Shutting down OPFS async listener. OPFS will no longer work.");
opRun('opfs-async-shutdown');
},
asyncRestart: ()=>{
warn("Attempting to restart OPFS async listener. Might work, might not.");
W.postMessage({type: 'opfs-async-restart'});
}
};
//TODO to support fiddle db upload:
//opfsUtil.createFile = function(absName, content=undefined){...}
if(sqlite3.oo1){
opfsUtil.OpfsDb = function(...args){
const opt = sqlite3.oo1.DB.dbCtorHelper.normalizeArgs(...args);
opt.vfs = opfsVfs.$zName;
sqlite3.oo1.DB.dbCtorHelper.call(this, opt);
};
opfsUtil.OpfsDb.prototype = Object.create(sqlite3.oo1.DB.prototype);
sqlite3.oo1.DB.dbCtorHelper.setVfsPostOpenSql(
opfsVfs.pointer,
[
/* Truncate journal mode is faster than delete or wal for
this vfs, per speedtest1. */
"pragma journal_mode=truncate;"
/*
This vfs benefits hugely from cache on moderate/large
speedtest1 --size 50 and --size 100 workloads. We currently
rely on setting a non-default cache size when building
sqlite3.wasm. If that policy changes, the cache can
be set here.
*/
//"pragma cache_size=-8388608;"
].join('')
);
}
/**
Potential TODOs:
- Expose one or both of the Worker objects via opfsUtil and
publish an interface for proxying the higher-level OPFS
features like getting a directory listing.
*/
const sanityCheck = function(){
const scope = wasm.scopedAllocPush();
const sq3File = new sqlite3_file();
try{
const fid = sq3File.pointer;
const openFlags = capi.SQLITE_OPEN_CREATE
| capi.SQLITE_OPEN_READWRITE
//| capi.SQLITE_OPEN_DELETEONCLOSE
| capi.SQLITE_OPEN_MAIN_DB;
const pOut = wasm.scopedAlloc(8);
const dbFile = "/sanity/check/file"+randomFilename(8);
const zDbFile = wasm.scopedAllocCString(dbFile);
let rc;
state.s11n.serialize("This is ä string.");
rc = state.s11n.deserialize();
|
|
|
<
<
<
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<
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<
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<
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9002
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9004
9005
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9007
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9014
9015
9016
9017
9018
9019
9020
9021
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9023
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9027
9028
9029
9030
9031
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9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
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9078
9079
9080
9081
9082
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9100
9101
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9103
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9106
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9109
9110
9111
9112
9113
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9119
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9123
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9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
|
}catch(e){
error("xWrite(",arguments,") failed:",e,f);
rc = capi.SQLITE_IOERR_WRITE;
}
mTimeEnd();
return rc;
}
};
const vfsSyncWrappers = {
xAccess: function(pVfs,zName,flags,pOut){
mTimeStart('xAccess');
const rc = opRun('xAccess', wasm.cstringToJs(zName));
wasm.setMemValue( pOut, (rc ? 0 : 1), 'i32' );
mTimeEnd();
return 0;
},
xCurrentTime: function(pVfs,pOut){
wasm.setMemValue(pOut, 2440587.5 + (new Date().getTime()/86400000),
'double');
return 0;
},
xCurrentTimeInt64: function(pVfs,pOut){
wasm.setMemValue(pOut, (2440587.5 * 86400000) + new Date().getTime(),
'i64');
return 0;
},
xDelete: function(pVfs, zName, doSyncDir){
mTimeStart('xDelete');
opRun('xDelete', wasm.cstringToJs(zName), doSyncDir, false);
mTimeEnd();
return 0;
},
xFullPathname: function(pVfs,zName,nOut,pOut){
const i = wasm.cstrncpy(pOut, zName, nOut);
return i<nOut ? 0 : capi.SQLITE_CANTOPEN
;
},
xGetLastError: function(pVfs,nOut,pOut){
warn("OPFS xGetLastError() has nothing sensible to return.");
return 0;
},
xOpen: function f(pVfs, zName, pFile, flags, pOutFlags){
mTimeStart('xOpen');
if(0===zName){
zName = randomFilename();
}else if('number'===typeof zName){
zName = wasm.cstringToJs(zName);
}
const fh = Object.create(null);
fh.fid = pFile;
fh.filename = zName;
fh.sab = new SharedArrayBuffer(state.fileBufferSize);
fh.flags = flags;
const rc = opRun('xOpen', pFile, zName, flags);
if(!rc){
if(fh.readOnly){
wasm.setMemValue(pOutFlags, capi.SQLITE_OPEN_READONLY, 'i32');
}
__openFiles[pFile] = fh;
fh.sabView = state.sabFileBufView;
fh.sq3File = new sqlite3_file(pFile);
fh.sq3File.$pMethods = opfsIoMethods.pointer;
fh.lockType = capi.SQLITE_LOCK_NONE;
}
mTimeEnd();
return rc;
}
};
if(dVfs){
opfsVfs.$xRandomness = dVfs.$xRandomness;
opfsVfs.$xSleep = dVfs.$xSleep;
}
if(!opfsVfs.$xRandomness){
vfsSyncWrappers.xRandomness = function(pVfs, nOut, pOut){
const heap = wasm.heap8u();
let i = 0;
for(; i < nOut; ++i) heap[pOut + i] = (Math.random()*255000) & 0xFF;
return i;
};
}
if(!opfsVfs.$xSleep){
vfsSyncWrappers.xSleep = function(pVfs,ms){
Atomics.wait(state.sabOPView, state.opIds.xSleep, 0, ms);
return 0;
};
}
for(let k of Object.keys(ioSyncWrappers)){
installMethod(opfsIoMethods, k, ioSyncWrappers[k]);
}
for(let k of Object.keys(vfsSyncWrappers)){
installMethod(opfsVfs, k, vfsSyncWrappers[k]);
}
opfsUtil.deleteEntry = function(fsEntryName,recursive=false){
mTimeStart('xDelete');
const rc = opRun('xDelete', fsEntryName, 0, recursive);
mTimeEnd();
return 0===rc;
};
opfsUtil.mkdir = function(absDirName){
mTimeStart('mkdir');
const rc = opRun('mkdir', absDirName);
mTimeEnd();
return 0===rc;
};
opfsUtil.entryExists = function(fsEntryName){
return 0===opRun('xAccess', fsEntryName);
};
opfsUtil.randomFilename = randomFilename;
opfsUtil.registerVfs = (asDefault=false)=>{
return capi.wasm.exports.sqlite3_vfs_register(
opfsVfs.pointer, asDefault ? 1 : 0
);
};
opfsUtil.debug = {
asyncShutdown: ()=>{
warn("Shutting down OPFS async listener. OPFS will no longer work.");
opRun('opfs-async-shutdown');
},
asyncRestart: ()=>{
warn("Attempting to restart OPFS async listener. Might work, might not.");
W.postMessage({type: 'opfs-async-restart'});
}
};
if(sqlite3.oo1){
opfsUtil.OpfsDb = function(...args){
const opt = sqlite3.oo1.DB.dbCtorHelper.normalizeArgs(...args);
opt.vfs = opfsVfs.$zName;
sqlite3.oo1.DB.dbCtorHelper.call(this, opt);
};
opfsUtil.OpfsDb.prototype = Object.create(sqlite3.oo1.DB.prototype);
sqlite3.oo1.DB.dbCtorHelper.setVfsPostOpenSql(
opfsVfs.pointer,
[
"pragma journal_mode=truncate;"
].join('')
);
}
const sanityCheck = function(){
const scope = wasm.scopedAllocPush();
const sq3File = new sqlite3_file();
try{
const fid = sq3File.pointer;
const openFlags = capi.SQLITE_OPEN_CREATE
| capi.SQLITE_OPEN_READWRITE
| capi.SQLITE_OPEN_MAIN_DB;
const pOut = wasm.scopedAlloc(8);
const dbFile = "/sanity/check/file"+randomFilename(8);
const zDbFile = wasm.scopedAllocCString(dbFile);
let rc;
state.s11n.serialize("This is ä string.");
rc = state.s11n.deserialize();
|
︙ | | | ︙ | |
12821
12822
12823
12824
12825
12826
12827
12828
12829
12830
12831
12832
12833
12834
12835
12836
12837
12838
12839
12840
12841
12842
12843
12844
12845
12846
12847
12848
|
rc = wasm.getMemValue(pOut,'i32');
if(rc) toss("Expecting 0 from xAccess(",dbFile,") after xDelete().");
warn("End of OPFS sanity checks.");
}finally{
sq3File.dispose();
wasm.scopedAllocPop(scope);
}
}/*sanityCheck()*/;
W.onmessage = function({data}){
//log("Worker.onmessage:",data);
switch(data.type){
case 'opfs-async-loaded':
/*Arrives as soon as the asyc proxy finishes loading.
Pass our config and shared state on to the async worker.*/
W.postMessage({type: 'opfs-async-init',args: state});
break;
case 'opfs-async-inited':{
/*Indicates that the async partner has received the 'init'
and has finished initializing, so the real work can
begin...*/
try {
const rc = capi.sqlite3_vfs_register(opfsVfs.pointer, 0);
if(rc){
toss("sqlite3_vfs_register(OPFS) failed with rc",rc);
}
if(opfsVfs.pointer !== capi.sqlite3_vfs_find("opfs")){
toss("BUG: sqlite3_vfs_find() failed for just-installed OPFS VFS");
|
|
|
|
<
|
<
<
|
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
|
rc = wasm.getMemValue(pOut,'i32');
if(rc) toss("Expecting 0 from xAccess(",dbFile,") after xDelete().");
warn("End of OPFS sanity checks.");
}finally{
sq3File.dispose();
wasm.scopedAllocPop(scope);
}
};
W.onmessage = function({data}){
switch(data.type){
case 'opfs-async-loaded':
W.postMessage({type: 'opfs-async-init',args: state});
break;
case 'opfs-async-inited':{
try {
const rc = capi.sqlite3_vfs_register(opfsVfs.pointer, 0);
if(rc){
toss("sqlite3_vfs_register(OPFS) failed with rc",rc);
}
if(opfsVfs.pointer !== capi.sqlite3_vfs_find("opfs")){
toss("BUG: sqlite3_vfs_find() failed for just-installed OPFS VFS");
|
︙ | | | ︙ | |
12870
12871
12872
12873
12874
12875
12876
12877
12878
12879
12880
12881
12882
12883
12884
12885
12886
12887
12888
12889
12890
12891
12892
12893
12894
12895
12896
12897
12898
12899
12900
12901
12902
12903
12904
12905
12906
12907
12908
12909
12910
12911
12912
12913
12914
12915
12916
12917
12918
12919
12920
12921
12922
12923
12924
12925
12926
12927
12928
12929
12930
12931
12932
12933
12934
12935
12936
12937
12938
12939
12940
12941
12942
12943
12944
12945
12946
12947
12948
12949
12950
12951
12952
12953
12954
12955
12956
12957
12958
12959
12960
12961
12962
12963
12964
12965
12966
12967
12968
12969
12970
12971
12972
12973
12974
12975
12976
12977
12978
12979
12980
12981
12982
12983
12984
12985
12986
12987
12988
12989
12990
12991
12992
12993
12994
12995
12996
12997
12998
12999
13000
13001
13002
13003
13004
13005
13006
13007
13008
13009
13010
13011
13012
13013
13014
13015
13016
13017
13018
13019
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
13030
13031
13032
13033
13034
13035
13036
13037
13038
13039
13040
13041
13042
13043
13044
13045
13046
13047
13048
13049
13050
13051
13052
13053
13054
13055
13056
13057
13058
13059
13060
13061
13062
13063
13064
13065
13066
13067
|
}
break;
}
default:
promiseReject(e);
error("Unexpected message from the async worker:",data);
break;
}/*switch(data.type)*/
}/*W.onmessage()*/;
})/*thePromise*/;
return thePromise;
}/*installOpfsVfs()*/;
installOpfsVfs.defaultProxyUri =
"sqlite3-opfs-async-proxy.js";
self.sqlite3ApiBootstrap.initializersAsync.push(async (sqlite3)=>{
if(sqlite3.scriptInfo && !sqlite3.scriptInfo.isWorker){
return;
}
try{
let proxyJs = installOpfsVfs.defaultProxyUri;
if(sqlite3.scriptInfo.sqlite3Dir){
installOpfsVfs.defaultProxyUri =
sqlite3.scriptInfo.sqlite3Dir + proxyJs;
//console.warn("installOpfsVfs.defaultProxyUri =",installOpfsVfs.defaultProxyUri);
}
return installOpfsVfs().catch((e)=>{
console.warn("Ignoring inability to install OPFS sqlite3_vfs:",e.message);
});
}catch(e){
console.error("installOpfsVfs() exception:",e);
throw e;
}
});
}/*sqlite3ApiBootstrap.initializers.push()*/);
/* END FILE: api/sqlite3-api-opfs.js */
/* BEGIN FILE: api/sqlite3-api-cleanup.js */
/*
2022-07-22
The author disclaims copyright to this source code. In place of a
legal notice, here is a blessing:
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
***********************************************************************
This file is the tail end of the sqlite3-api.js constellation,
intended to be appended after all other sqlite3-api-*.js files so
that it can finalize any setup and clean up any global symbols
temporarily used for setting up the API's various subsystems.
*/
'use strict';
if('undefined' !== typeof Module){ // presumably an Emscripten build
/**
Install a suitable default configuration for sqlite3ApiBootstrap().
*/
const SABC = Object.assign(
Object.create(null), {
Module: Module /* ==> Currently needs to be exposed here for
test code. NOT part of the public API. */,
exports: Module['asm'],
memory: Module.wasmMemory /* gets set if built with -sIMPORT_MEMORY */
},
self.sqlite3ApiConfig || Object.create(null)
);
/**
For current (2022-08-22) purposes, automatically call
sqlite3ApiBootstrap(). That decision will be revisited at some
point, as we really want client code to be able to call this to
configure certain parts. Clients may modify
self.sqlite3ApiBootstrap.defaultConfig to tweak the default
configuration used by a no-args call to sqlite3ApiBootstrap(),
but must have first loaded their WASM module in order to be
able to provide the necessary configuration state.
*/
//console.warn("self.sqlite3ApiConfig = ",self.sqlite3ApiConfig);
self.sqlite3ApiConfig = SABC;
let sqlite3;
try{
sqlite3 = self.sqlite3ApiBootstrap();
}catch(e){
console.error("sqlite3ApiBootstrap() error:",e);
throw e;
}finally{
delete self.sqlite3ApiBootstrap;
delete self.sqlite3ApiConfig;
}
if(self.location && +self.location.port > 1024){
console.warn("Installing sqlite3 bits as global S for local dev/test purposes.");
self.S = sqlite3;
}
/* Clean up temporary references to our APIs... */
delete sqlite3.capi.util /* arguable, but these are (currently) internal-use APIs */;
Module.sqlite3 = sqlite3 /* Needed for customized sqlite3InitModule() to be able to
pass the sqlite3 object off to the client. */;
}else{
console.warn("This is not running in an Emscripten module context, so",
"self.sqlite3ApiBootstrap() is _not_ being called due to lack",
"of config info for the WASM environment.",
"It must be called manually.");
}
/* END FILE: api/sqlite3-api-cleanup.js */
/* END FILE: ./bld/sqlite3-api.js */
/* BEGIN FILE: api/post-js-footer.js */
/* The current function scope was opened via post-js-header.js, which
gets prepended to this at build-time. This file closes that
scope. */
})/*postRun.push(...)*/;
/* END FILE: api/post-js-footer.js */
return sqlite3InitModule.ready
}
);
})();
if (typeof exports === 'object' && typeof module === 'object')
module.exports = sqlite3InitModule;
else if (typeof define === 'function' && define['amd'])
define([], function() { return sqlite3InitModule; });
else if (typeof exports === 'object')
exports["sqlite3InitModule"] = sqlite3InitModule;
/* extern-post-js.js must be appended to the resulting sqlite3.js
file. It gets its name from being used as the value for the
--extern-post-js=... Emscripten flag. Note that this code, unlike
most of the associated JS code, runs outside of the
Emscripten-generated module init scope, in the current
global scope. */
(function(){
/**
In order to hide the sqlite3InitModule()'s resulting Emscripten
module from downstream clients (and simplify our documentation by
being able to elide those details), we rewrite
sqlite3InitModule() to return the sqlite3 object.
Unfortunately, we cannot modify the module-loader/exporter-based
impls which Emscripten installs at some point in the file above
this.
*/
const originalInit = self.sqlite3InitModule;
if(!originalInit){
throw new Error("Expecting self.sqlite3InitModule to be defined by the Emscripten build.");
}
/**
We need to add some state which our custom Module.locateFile()
can see, but an Emscripten limitation currently prevents us from
attaching it to the sqlite3InitModule function object:
https://github.com/emscripten-core/emscripten/issues/18071
The only(?) current workaround is to temporarily stash this state
into the global scope and delete it when sqlite3InitModule()
is called.
*/
const initModuleState = self.sqlite3InitModuleState = Object.assign(Object.create(null),{
moduleScript: self?.document?.currentScript,
isWorker: ('undefined' !== typeof WorkerGlobalScope),
location: self.location,
urlParams: new URL(self.location.href).searchParams
});
if(initModuleState.urlParams.has('sqlite3.dir')){
initModuleState.sqlite3Dir = initModuleState.urlParams.get('sqlite3.dir') +'/';
}else if(initModuleState.moduleScript){
const li = initModuleState.moduleScript.src.split('/');
li.pop();
initModuleState.sqlite3Dir = li.join('/') + '/';
}
//console.warn("initModuleState =",initModuleState);
self.sqlite3InitModule = (...args)=>{
//console.warn("Using replaced sqlite3InitModule()",self.location);
return originalInit(...args).then((EmscriptenModule)=>{
if(self.window!==self &&
(EmscriptenModule['ENVIRONMENT_IS_PTHREAD']
|| EmscriptenModule['_pthread_self']
|| 'function'===typeof threadAlert
|| self.location.pathname.endsWith('.worker.js')
)){
/** Workaround for wasmfs-generated worker, which calls this
routine from each individual thread and requires that its
argument be returned. All of the criteria above are fragile,
based solely on inspection of the offending code, not public
Emscripten details. */
return EmscriptenModule;
}
EmscriptenModule.sqlite3.scriptInfo = initModuleState;
//console.warn("sqlite3.scriptInfo =",EmscriptenModule.sqlite3.scriptInfo);
const f = EmscriptenModule.sqlite3.asyncPostInit;
delete EmscriptenModule.sqlite3.asyncPostInit;
return f();
}).catch((e)=>{
console.error("Exception loading sqlite3 module:",e);
throw e;
});
|
<
>
|
|
|
|
<
<
<
<
<
|
<
<
<
<
<
<
<
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<
<
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<
<
<
<
<
<
<
<
<
|
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|
<
|
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|
<
<
|
|
|
<
<
<
<
<
<
<
<
<
<
|
<
<
<
<
<
<
<
<
|
<
<
<
<
<
<
|
|
|
<
<
<
<
|
|
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
|
}
break;
}
default:
promiseReject(e);
error("Unexpected message from the async worker:",data);
break;
}
};
});
return thePromise;
};
installOpfsVfs.defaultProxyUri =
"sqlite3-opfs-async-proxy.js";
self.sqlite3ApiBootstrap.initializersAsync.push(async (sqlite3)=>{
if(sqlite3.scriptInfo && !sqlite3.scriptInfo.isWorker){
return;
}
try{
let proxyJs = installOpfsVfs.defaultProxyUri;
if(sqlite3.scriptInfo.sqlite3Dir){
installOpfsVfs.defaultProxyUri =
sqlite3.scriptInfo.sqlite3Dir + proxyJs;
}
return installOpfsVfs().catch((e)=>{
console.warn("Ignoring inability to install OPFS sqlite3_vfs:",e.message);
});
}catch(e){
console.error("installOpfsVfs() exception:",e);
throw e;
}
});
});
'use strict';
if('undefined' !== typeof Module){
const SABC = Object.assign(
Object.create(null), {
Module: Module ,
exports: Module['asm'],
memory: Module.wasmMemory
},
self.sqlite3ApiConfig || Object.create(null)
);
self.sqlite3ApiConfig = SABC;
let sqlite3;
try{
sqlite3 = self.sqlite3ApiBootstrap();
}catch(e){
console.error("sqlite3ApiBootstrap() error:",e);
throw e;
}finally{
delete self.sqlite3ApiBootstrap;
delete self.sqlite3ApiConfig;
}
if(self.location && +self.location.port > 1024){
console.warn("Installing sqlite3 bits as global S for local dev/test purposes.");
self.S = sqlite3;
}
delete sqlite3.capi.util ;
Module.sqlite3 = sqlite3 ;
}else{
console.warn("This is not running in an Emscripten module context, so",
"self.sqlite3ApiBootstrap() is _not_ being called due to lack",
"of config info for the WASM environment.",
"It must be called manually.");
}
});
return sqlite3InitModule.ready
}
);
})();
if (typeof exports === 'object' && typeof module === 'object')
module.exports = sqlite3InitModule;
else if (typeof define === 'function' && define['amd'])
define([], function() { return sqlite3InitModule; });
else if (typeof exports === 'object')
exports["sqlite3InitModule"] = sqlite3InitModule;
(function(){
const originalInit = self.sqlite3InitModule;
if(!originalInit){
throw new Error("Expecting self.sqlite3InitModule to be defined by the Emscripten build.");
}
const initModuleState = self.sqlite3InitModuleState = Object.assign(Object.create(null),{
moduleScript: self?.document?.currentScript,
isWorker: ('undefined' !== typeof WorkerGlobalScope),
location: self.location,
urlParams: new URL(self.location.href).searchParams
});
if(initModuleState.urlParams.has('sqlite3.dir')){
initModuleState.sqlite3Dir = initModuleState.urlParams.get('sqlite3.dir') +'/';
}else if(initModuleState.moduleScript){
const li = initModuleState.moduleScript.src.split('/');
li.pop();
initModuleState.sqlite3Dir = li.join('/') + '/';
}
self.sqlite3InitModule = (...args)=>{
return originalInit(...args).then((EmscriptenModule)=>{
if(self.window!==self &&
(EmscriptenModule['ENVIRONMENT_IS_PTHREAD']
|| EmscriptenModule['_pthread_self']
|| 'function'===typeof threadAlert
|| self.location.pathname.endsWith('.worker.js')
)){
return EmscriptenModule;
}
EmscriptenModule.sqlite3.scriptInfo = initModuleState;
const f = EmscriptenModule.sqlite3.asyncPostInit;
delete EmscriptenModule.sqlite3.asyncPostInit;
return f();
}).catch((e)=>{
console.error("Exception loading sqlite3 module:",e);
throw e;
});
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console.warn("Replaced sqlite3InitModule()");
console.warn("self.location.href =",self.location.href);
if('undefined' !== typeof document){
console.warn("document.currentScript.src =",
document?.currentScript?.src);
}
}
/* Replace the various module exports performed by the Emscripten
glue... */
if (typeof exports === 'object' && typeof module === 'object')
module.exports = sqlite3InitModule;
else if (typeof exports === 'object')
exports["sqlite3InitModule"] = sqlite3InitModule;
/* AMD modules get injected in a way we cannot override,
so we can't handle those here. */
})();
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<
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<
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console.warn("Replaced sqlite3InitModule()");
console.warn("self.location.href =",self.location.href);
if('undefined' !== typeof document){
console.warn("document.currentScript.src =",
document?.currentScript?.src);
}
}
if (typeof exports === 'object' && typeof module === 'object')
module.exports = sqlite3InitModule;
else if (typeof exports === 'object')
exports["sqlite3InitModule"] = sqlite3InitModule;
})();
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