SQLite

libtclsqlite3.la:	tclsqlite.lo libsqlite3.la
	$(LTLINK) -o libtclsqlite3.la tclsqlite.lo \
		$(LIBOBJ) @TCL_STUB_LIB_SPEC@ $(LIBPTHREAD) \
                -rpath $(libdir)/sqlite \
		-version-info "8:6:8"

testcli$(TEXE):	$(TOP)/src/shell.c libsqlite3.la sqlite3.h
	$(LTLINK) $(READLINE_FLAGS) $(LIBPTHREAD) \
		-o $@ $(TOP)/src/shell.c libsqlite3.la \
		$(LIBREADLINE) $(TLIBS)

sqlite3$(EXE):	$(TOP)/src/shell.c sqlite3.c sqlite3.h
	$(LTLINK) $(READLINE_FLAGS) -o $@                          \
		-DSQLITE_MAX_SQL_LENGTH=1000000000                  \
		-USQLITE_THREADSAFE -DSQLITE_THREADSAFE=0           \
		$(TOP)/src/shell.c sqlite3.c                        \
		$(LIBREADLINE) $(TLIBS) $(THREADLIB)

# This target creates a directory named "tsrc" and fills it with
# copies of all of the C source code and header files needed to
# build on the target system.  Some of the C source code and header
# files are automatically generated.  This target takes care of
# all that automatic generation.
#
target_source:	$(SRC) parse.c opcodes.c keywordhash.h $(VDBEHDR) 

#
all:	sqlite3.h libsqlite3.a sqlite3$(EXE)

libsqlite3.a:	$(LIBOBJ)
	$(AR) libsqlite3.a $(LIBOBJ)
	$(RANLIB) libsqlite3.a

testcli$(EXE):	$(TOP)/src/shell.c libsqlite3.a sqlite3.h
	$(TCCX) $(READLINE_FLAGS) -o testcli$(EXE)                  \
		$(TOP)/src/shell.c                                  \
		libsqlite3.a $(LIBREADLINE) $(TLIBS) $(THREADLIB)

sqlite3$(EXE):	$(TOP)/src/shell.c sqlite3.c sqlite3.h
	$(TCCX) $(READLINE_FLAGS) -o sqlite3$(EXE)                  \
		-DSQLITE_MAX_SQL_LENGTH=1000000000                  \
		-USQLITE_THREADSAFE -DSQLITE_THREADSAFE=0           \
		$(TOP)/src/shell.c sqlite3.c                        \
		$(LIBREADLINE) $(TLIBS) $(THREADLIB)

objects: $(LIBOBJ_ORIG)

# This target creates a directory named "tsrc" and fills it with
# copies of all of the C source code and header files needed to
# build on the target system.  Some of the C source code and header
# files are automatically generated.  This target takes care of
# all that automatic generation.

**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** 
** This file defines various limits of what SQLite can process.
**
** @(#) $Id: sqliteLimit.h,v 1.5 2007/12/13 21:54:11 drh Exp $
*/

/*
** The maximum length of a TEXT or BLOB in bytes.   This also
** limits the size of a row in a table or index.
**
** The hard limit is the ability of a 32-bit signed integer

*/
#ifndef SQLITE_MAX_COLUMN
# define SQLITE_MAX_COLUMN 2000
#endif

/*
** The maximum length of a single SQL statement in bytes.
** The hard limit is 1 million.
*/
#ifndef SQLITE_MAX_SQL_LENGTH
# define SQLITE_MAX_SQL_LENGTH 1000000
#endif

/*
** The maximum depth of an expression tree. This is limited to 
** some extent by SQLITE_MAX_SQL_LENGTH. But sometime you might 
** want to place more severe limits on the complexity of an 
** expression. A value of 0 (the default) means do not enforce

*************************************************************************
** An tokenizer for SQL
**
** This file contains C code that splits an SQL input string up into
** individual tokens and sends those tokens one-by-one over to the
** parser for analysis.
**
** $Id: tokenize.c,v 1.136 2007/08/27 23:26:59 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
#include <stdlib.h>

/*
** The charMap() macro maps alphabetic characters into their

  pParse->zTail = pParse->zSql = zSql;
  while( !db->mallocFailed && zSql[i]!=0 ){
    assert( i>=0 );
    pParse->sLastToken.z = (u8*)&zSql[i];
    assert( pParse->sLastToken.dyn==0 );
    pParse->sLastToken.n = getToken((unsigned char*)&zSql[i],&tokenType);
    i += pParse->sLastToken.n;
    if( i>SQLITE_MAX_SQL_LENGTH ){
      pParse->rc = SQLITE_TOOBIG;
      break;
    }
    switch( tokenType ){
      case TK_SPACE:
      case TK_COMMENT: {
        if( db->u1.isInterrupted ){

**
** Various scripts scan this source file in order to generate HTML
** documentation, headers files, or other derived files.  The formatting
** of the code in this file is, therefore, important.  See other comments
** in this file for details.  If in doubt, do not deviate from existing
** commenting and indentation practices when changing or adding code.
**
** $Id: vdbe.c,v 1.660 2007/12/13 21:54:11 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
#include "vdbeInt.h"

/*
** The following global variable is incremented every time a cursor

** P3 points to a nul terminated UTF-8 string. This opcode is transformed 
** into an OP_String before it is executed for the first time.
*/
case OP_String8: {         /* same as TK_STRING */
  assert( pOp->p3!=0 );
  pOp->opcode = OP_String;
  pOp->p1 = strlen(pOp->p3);
  assert( SQLITE_MAX_SQL_LENGTH <= SQLITE_MAX_LENGTH );
  assert( pOp->p1 <= SQLITE_MAX_LENGTH );

#ifndef SQLITE_OMIT_UTF16
  if( encoding!=SQLITE_UTF8 ){
    pTos++;
    sqlite3VdbeMemSetStr(pTos, pOp->p3, -1, SQLITE_UTF8, SQLITE_STATIC);
    if( SQLITE_OK!=sqlite3VdbeChangeEncoding(pTos, encoding) ) goto no_mem;
    if( SQLITE_OK!=sqlite3VdbeMemDynamicify(pTos) ) goto no_mem;
    pTos->flags &= ~(MEM_Dyn);
    pTos->flags |= MEM_Static;
    if( pOp->p3type==P3_DYNAMIC ){
      sqlite3_free(pOp->p3);
    }
    pOp->p3type = P3_DYNAMIC;
    pOp->p3 = pTos->z;
    pOp->p1 = pTos->n;
    assert( pOp->p1 <= SQLITE_MAX_LENGTH ); /* Due to SQLITE_MAX_SQL_LENGTH */


    break;
  }
#endif



  /* Otherwise fall through to the next case, OP_String */
}
  
/* Opcode: String P1 * P3
**
** The string value P3 of length P1 (bytes) is pushed onto the stack.
*/
case OP_String: {
  assert( pOp->p1 <= SQLITE_MAX_LENGTH ); /* Due to SQLITE_MAX_SQL_LENGTH */
  pTos++;
  assert( pOp->p3!=0 );
  pTos->flags = MEM_Str|MEM_Static|MEM_Term;
  pTos->z = pOp->p3;
  pTos->n = pOp->p1;
  pTos->enc = encoding;
  break;

**
** The first time this instruction executes, in transforms itself into a
** 'Blob' opcode with a binary blob as P3.
*/
case OP_HexBlob: {            /* same as TK_BLOB */
  pOp->opcode = OP_Blob;
  pOp->p1 = strlen(pOp->p3)/2;
  assert( SQLITE_MAX_SQL_LENGTH <= SQLITE_MAX_LENGTH );
  assert( pOp->p1 <= SQLITE_MAX_LENGTH );


  if( pOp->p1 ){
    char *zBlob = sqlite3HexToBlob(db, pOp->p3);
    if( !zBlob ) goto no_mem;
    if( pOp->p3type==P3_DYNAMIC ){
      sqlite3_free(pOp->p3);
    }
    pOp->p3 = zBlob;

** by the compiler. Instead, the compiler layer specifies
** an OP_HexBlob opcode, with the hex string representation of
** the blob as P3. This opcode is transformed to an OP_Blob
** the first time it is executed.
*/
case OP_Blob: {
  pTos++;
  assert( pOp->p1 <= SQLITE_MAX_LENGTH ); /* Due to SQLITE_MAX_SQL_LENGTH */
  sqlite3VdbeMemSetStr(pTos, pOp->p3, pOp->p1, 0, 0);
  pTos->enc = encoding;
  break;
}
#endif /* SQLITE_OMIT_BLOB_LITERAL */

/* Opcode: Variable P1 * *

#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
# This file contains tests to verify that the limits defined in
# sqlite source file limits.h are enforced.
#
# $Id: sqllimits1.test,v 1.20 2007/11/28 22:36:41 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Test organization:
#
#     sqllimits-1.*:  SQLITE_MAX_LENGTH

    INSERT INTO t4 SELECT 2+x FROM t4;
  }
  catchsql {
    SELECT group_concat(hex(randomblob(20000))) FROM t4;
  }
} {1 {string or blob too big}}
db eval {DROP TABLE t4}



















#--------------------------------------------------------------------
# Test cases sqllimits-2.* test that the SQLITE_MAX_SQL_LENGTH limit
# is enforced.
#
do_test sqllimits-2.1 {

  set    sql "SELECT 1 WHERE 1==1"



  set N [expr {$::SQLITE_MAX_SQL_LENGTH / [string length " AND 1==1"]}]
  append sql [string repeat " AND 1==1" $N]
  catchsql $sql
} {1 {String or BLOB exceeded size limit}}





#--------------------------------------------------------------------
# Test cases sqllimits-3.* test that the limit set using the
# max_page_count pragma.
#
do_test sqllimits-3.1 {
  execsql {