SQLite

/*
** 2003 April 6
**
** 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 code used to implement the ATTACH and DETACH commands.
**
** $Id: attach.c,v 1.10 2004/02/12 18:46:39 drh Exp $
*/
#include "sqliteInt.h"

/*
** This routine is called by the parser to process an ATTACH statement:
**
**     ATTACH DATABASE filename AS dbname
**
** The pFilename and pDbname arguments are the tokens that define the
** filename and dbname in the ATTACH statement.
*/
void sqliteAttach(Parse *pParse, Token *pFilename, Token *pDbname, Token *pKey){
  Db *aNew;
  int rc, i;
  char *zFile, *zName;
  sqlite *db;
  Vdbe *v;

  v = sqliteGetVdbe(pParse);

  sqliteHashInit(&aNew->trigHash, SQLITE_HASH_STRING, 0);
  sqliteHashInit(&aNew->aFKey, SQLITE_HASH_STRING, 1);
  aNew->zName = zName;
  rc = sqliteBtreeFactory(db, zFile, 0, MAX_PAGES, &aNew->pBt);
  if( rc ){
    sqliteErrorMsg(pParse, "unable to open database: %s", zFile);
  }
#if SQLITE_HAS_CODEC
  {
    extern int sqliteCodecAttach(sqlite*, int, void*, int);
    char *zKey = 0;
    int nKey;
    if( pKey && pKey->z && pKey->n ){
      sqliteSetNString(&zKey, pKey->z, pKey->n, 0);
      sqliteDequote(zKey);
      nKey = strlen(zKey);
    }else{
      zKey = 0;
      nKey = 0;
    }
    sqliteCodecAttach(db, db->nDb-1, zKey, nKey);
  }
#endif
  sqliteFree(zFile);
  db->flags &= ~SQLITE_Initialized;
  if( pParse->nErr ) return;
  if( rc==SQLITE_OK ){
    rc = sqliteInit(pParse->db, &pParse->zErrMsg);
  }
  if( rc ){

**     DROP INDEX
**     creating ID lists
**     BEGIN TRANSACTION
**     COMMIT
**     ROLLBACK
**     PRAGMA
**
** $Id: build.c,v 1.166 2004/02/12 18:46:39 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>

/*
** This routine is called when a new SQL statement is beginning to
** be parsed.  Check to see if the schema for the database needs

  /* If one or more of the auxiliary database files has been closed,
  ** then remove then from the auxiliary database list.  We take the
  ** opportunity to do this here since we have just deleted all of the
  ** schema hash tables and therefore do not have to make any changes
  ** to any of those tables.
  */
  for(i=0; i<db->nDb; i++){
    struct Db *pDb = &db->aDb[i];
    if( pDb->pBt==0 ){
      if( pDb->pAux && pDb->xFreeAux ) pDb->xFreeAux(pDb->pAux);
      pDb->pAux = 0;
    }
  }
  for(i=j=2; i<db->nDb; i++){
    struct Db *pDb = &db->aDb[i];
    if( pDb->pBt==0 ){
      sqliteFree(pDb->zName);
      pDb->zName = 0;
      continue;
    }
    if( j<i ){
      db->aDb[j] = db->aDb[i];
    }
    j++;
  }

**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.149 2004/02/12 18:46:39 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** A pointer to this structure is used to communicate information

  db->want_to_close = 1;
  if( sqliteSafetyCheck(db) || sqliteSafetyOn(db) ){
    /* printf("DID NOT CLOSE\n"); fflush(stdout); */
    return;
  }
  db->magic = SQLITE_MAGIC_CLOSED;
  for(j=0; j<db->nDb; j++){
    struct Db *pDb = &db->aDb[j];
    if( pDb->pBt ){
      sqliteBtreeClose(pDb->pBt);
      pDb->pBt = 0;




    }
  }
  sqliteResetInternalSchema(db, 0);
  assert( db->nDb<=2 );
  assert( db->aDb==db->aDbStatic );
  for(i=sqliteHashFirst(&db->aFunc); i; i=sqliteHashNext(i)){
    FuncDef *pFunc, *pNext;

**
*************************************************************************
** This file contains SQLite's grammar for SQL.  Process this file
** using the lemon parser generator to generate C code that runs
** the parser.  Lemon will also generate a header file containing
** numeric codes for all of the tokens.
**
** @(#) $Id: parse.y,v 1.109 2004/02/12 18:46:39 drh Exp $
*/
%token_prefix TK_
%token_type {Token}
%default_type {Token}
%extra_argument {Parse *pParse}
%syntax_error {
  if( pParse->zErrMsg==0 ){

////////////////////////  DROP TRIGGER statement //////////////////////////////
cmd ::= DROP TRIGGER nm(X) dbnm(D). {
  sqliteDropTrigger(pParse,sqliteSrcListAppend(0,&X,&D));
}

//////////////////////// ATTACH DATABASE file AS name /////////////////////////
cmd ::= ATTACH database_kw_opt ids(F) AS nm(D) key_opt(K). {
  sqliteAttach(pParse, &F, &D, &K);
}
%type key_opt {Token}
key_opt(A) ::= USING ids(X).  { A = X; }
key_opt(A) ::= .              { A.z = 0; A.n = 0; }

database_kw_opt ::= DATABASE.
database_kw_opt ::= .

//////////////////////// DETACH DATABASE name /////////////////////////////////
cmd ::= DETACH database_kw_opt nm(D). {
  sqliteDetach(pParse, &D);
}

/*
** 2001 September 15
**
** 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.
**
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.211 2004/02/12 18:46:39 drh Exp $
*/
#include "config.h"
#include "sqlite.h"
#include "hash.h"
#include "vdbe.h"
#include "parse.h"
#include "btree.h"

  int schema_cookie;   /* Database schema version number for this file */
  Hash tblHash;        /* All tables indexed by name */
  Hash idxHash;        /* All (named) indices indexed by name */
  Hash trigHash;       /* All triggers indexed by name */
  Hash aFKey;          /* Foreign keys indexed by to-table */
  u8 inTrans;          /* 0: not writable.  1: Transaction.  2: Checkpoint */
  u16 flags;           /* Flags associated with this database */
  void *pAux;          /* Auxiliary data.  Usually NULL */
  void (*xFreeAux)(void*);  /* Routine to free pAux */
};

/*
** These macros can be used to test, set, or clear bits in the 
** Db.flags field.
*/
#define DbHasProperty(D,I,P)     (((D)->aDb[I].flags&(P))==(P))

  void sqliteAuthContextPop(AuthContext*);
#else
# define sqliteAuthRead(a,b,c)
# define sqliteAuthCheck(a,b,c,d,e)    SQLITE_OK
# define sqliteAuthContextPush(a,b,c)
# define sqliteAuthContextPop(a)  ((void)(a))
#endif
void sqliteAttach(Parse*, Token*, Token*, Token*);
void sqliteDetach(Parse*, Token*);
int sqliteBtreeFactory(const sqlite *db, const char *zFilename,
                       int mode, int nPg, Btree **ppBtree);
int sqliteFixInit(DbFixer*, Parse*, int, const char*, const Token*);
int sqliteFixSrcList(DbFixer*, SrcList*);
int sqliteFixSelect(DbFixer*, Select*);
int sqliteFixExpr(DbFixer*, Expr*);
int sqliteFixExprList(DbFixer*, ExprList*);
int sqliteFixTriggerStep(DbFixer*, TriggerStep*);
double sqliteAtoF(const char *z);
int sqlite_snprintf(int,char*,const char*,...);
int sqliteFitsIn32Bits(const char *);

# 2001 September 15
#
# 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 runs all tests.
#
# $Id: memleak.test,v 1.3 2004/02/12 18:46:39 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl
rename finish_test really_finish_test
proc finish_test {} {
  catch {db close}
  memleak_check

  all.test
  quick.test
  malloc.test
  misuse.test
  memleak.test
  btree2.test
  trans.test
}
if {[sqlite -has-codec]} {
  lappend EXCLUDE \
    attach.test \
    attach2.test \
    auth.test \
    format3.test \
    version.test
}
if {[llength $argv]>0} {
  set FILELIST $argv
  set argv {}
} else {
  set FILELIST [lsort -dictionary [glob $testdir/*.test]]
}