SQLite

**
*************************************************************************
** 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: legacy.c,v 1.16 2006/09/15 07:28:50 drh Exp $
*/

#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*

    if( *pzErrMsg ){
      strcpy(*pzErrMsg, sqlite3_errmsg(db));
    }
  }else if( pzErrMsg ){
    *pzErrMsg = 0;
  }

  assert( (rc&db->errMask)==rc );
  return rc;
}

    if( aAutoExtension==0 ){
      nAutoExtension = 0;
      rc = SQLITE_NOMEM;
    }else{
      aAutoExtension[nAutoExtension-1] = xInit;
    }
  }
  sqlite3OsLeaveMutex();
  assert( (rc&0xff)==rc );
  return rc;
}

/*
** Reset the automatic extension loading mechanism.
*/
void sqlite3_reset_auto_extension(void){

**
*************************************************************************
** 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 1.357 2006/09/15 07:28:50 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** The following constant value is used by the SQLITE_BIGENDIAN and

/*
** Return a static string that describes the kind of error specified in the
** argument.
*/
const char *sqlite3ErrStr(int rc){
  const char *z;
  switch( rc & 0xff ){
    case SQLITE_ROW:
    case SQLITE_DONE:
    case SQLITE_OK:         z = "not an error";                          break;
    case SQLITE_ERROR:      z = "SQL logic error or missing database";   break;
    case SQLITE_PERM:       z = "access permission denied";              break;
    case SQLITE_ABORT:      z = "callback requested query abort";        break;
    case SQLITE_BUSY:       z = "database is locked";                    break;

int sqlite3_errcode(sqlite3 *db){
  if( !db || sqlite3MallocFailed() ){
    return SQLITE_NOMEM;
  }
  if( sqlite3SafetyCheck(db) ){
    return SQLITE_MISUSE;
  }
  return db->errCode & db->errMask;
}

/*
** Create a new collating function for database "db".  The name is zName
** and the encoding is enc.
*/
static int createCollation(

  CollSeq *pColl;

  assert( !sqlite3MallocFailed() );

  /* Allocate the sqlite data structure */
  db = sqliteMalloc( sizeof(sqlite3) );
  if( db==0 ) goto opendb_out;
  db->errMask = 0xff;
  db->priorNewRowid = 0;
  db->magic = SQLITE_MAGIC_BUSY;
  db->nDb = 2;
  db->aDb = db->aDbStatic;
  db->autoCommit = 1;
  db->flags |= SQLITE_ShortColNames
#if SQLITE_DEFAULT_FILE_FORMAT<4

int sqlite3_reset(sqlite3_stmt *pStmt){
  int rc;
  if( pStmt==0 ){
    rc = SQLITE_OK;
  }else{
    rc = sqlite3VdbeReset((Vdbe*)pStmt);
    sqlite3VdbeMakeReady((Vdbe*)pStmt, -1, 0, 0, 0);
    assert( (rc & (sqlite3_db_handle(pStmt)->errMask))==rc );
  }
  return rc;
}

/*
** Register a new collation sequence with the database handle db.
*/

/*
** Sleep for a little while.  Return the amount of time slept.
*/
int sqlite3_sleep(int ms){
  return sqlite3OsSleep(ms);
}

/*
** Enable or disable the extended result codes.
*/
int sqlite3_extended_result_codes(sqlite3 *db, int onoff){
  db->errMask = onoff ? 0xffffffff : 0xff;
  return SQLITE_OK;
}

  TIMER_END;
  TRACE5("READ    %-3d %5d %7d %d\n", ((unixFile*)id)->h, got,
          last_page, TIMER_ELAPSED);
  SEEK(0);
  SimulateIOError( got=0 );
  if( got==amt ){
    return SQLITE_OK;
  }else if( got<0 ){
    return SQLITE_IOERR_READ;
  }else{
    return SQLITE_IOERR_SHORT_READ;
  }
}

/*
** Seek to the offset in id->offset then read cnt bytes into pBuf.
** Return the number of bytes actually read.  Update the offset.
*/

  TRACE5("WRITE   %-3d %5d %7d %d\n", ((unixFile*)id)->h, wrote,
          last_page, TIMER_ELAPSED);
  SEEK(0);
  SimulateIOError(( wrote=(-1), amt=1 ));
  SimulateDiskfullError(( wrote=0, amt=1 ));
  if( amt>0 ){
    if( wrote<0 ){
      return SQLITE_IOERR_WRITE;
    }else{
      return SQLITE_FULL;
    }
  }
  return SQLITE_OK;
}

#ifdef SQLITE_NO_SYNC
  rc = SQLITE_OK;
#else

#if HAVE_FULLFSYNC
  if( fullSync ){
    rc = fcntl(fd, F_FULLFSYNC, 0);
  }else




#endif /* HAVE_FULLFSYNC */

  if( dataOnly ){
    rc = fdatasync(fd);
  }else{
    rc = fsync(fd);
  }

#endif /* defined(SQLITE_NO_SYNC) */

  return rc;
}

/*
** Make sure all writes to a particular file are committed to disk.

  int rc;
  unixFile *pFile = (unixFile*)id;
  assert( pFile );
  TRACE2("SYNC    %-3d\n", pFile->h);
  rc = full_fsync(pFile->h, pFile->fullSync, dataOnly);
  SimulateIOError( rc=1 );
  if( rc ){
    return SQLITE_IOERR_FSYNC;
  }
  if( pFile->dirfd>=0 ){
    TRACE4("DIRSYNC %-3d (have_fullfsync=%d fullsync=%d)\n", pFile->dirfd,
            HAVE_FULLFSYNC, pFile->fullSync);
#ifndef SQLITE_DISABLE_DIRSYNC
    /* The directory sync is only attempted if full_fsync is
    ** turned off or unavailable.  If a full_fsync occurred above,

  if( fd<0 ){
    return SQLITE_CANTOPEN; 
  }
  r = fsync(fd);
  close(fd);
  SimulateIOError( r=1 );
  if( r ){
    return SQLITE_IOERR_DIR_FSYNC;
  }else{
    return SQLITE_OK;
  }
#endif
}

/*
** Truncate an open file to a specified size
*/
static int unixTruncate(OsFile *id, i64 nByte){
  int rc;
  assert( id );
  rc = ftruncate(((unixFile*)id)->h, nByte);
  SimulateIOError( rc=1 );
  if( rc ){
    return SQLITE_IOERR_TRUNCATE;
  }else{
    return SQLITE_OK;
  }
}

/*
** Determine the current size of a file in bytes
*/
static int unixFileSize(OsFile *id, i64 *pSize){
  int rc;
  struct stat buf;
  assert( id );
  rc = fstat(((unixFile*)id)->h, &buf);
  SimulateIOError( rc=1 );
  if( rc!=0 ){
    return SQLITE_IOERR_FSTAT;
  }
  *pSize = buf.st_size;
  return SQLITE_OK;
}

/*
** This routine checks if there is a RESERVED lock held on the specified

    s = fcntl(pFile->h, F_SETLK, &lock);

    /* Drop the temporary PENDING lock */
    lock.l_start = PENDING_BYTE;
    lock.l_len = 1L;
    lock.l_type = F_UNLCK;
    if( fcntl(pFile->h, F_SETLK, &lock)!=0 ){
      rc = SQLITE_IOERR_UNLOCK;  /* This should never happen */
      goto end_lock;
    }
    if( s ){
      rc = (errno==EINVAL) ? SQLITE_NOLFS : SQLITE_BUSY;
    }else{
      pFile->locktype = SHARED_LOCK;
      pFile->pOpen->nLock++;

    if( locktype==SHARED_LOCK ){
      lock.l_type = F_RDLCK;
      lock.l_whence = SEEK_SET;
      lock.l_start = SHARED_FIRST;
      lock.l_len = SHARED_SIZE;
      if( fcntl(pFile->h, F_SETLK, &lock)!=0 ){
        /* This should never happen */
        rc = SQLITE_IOERR_RDLOCK;
      }
    }
    lock.l_type = F_UNLCK;
    lock.l_whence = SEEK_SET;
    lock.l_start = PENDING_BYTE;
    lock.l_len = 2L;  assert( PENDING_BYTE+1==RESERVED_BYTE );
    if( fcntl(pFile->h, F_SETLK, &lock)==0 ){
      pLock->locktype = SHARED_LOCK;
    }else{
      rc = SQLITE_IOERR_UNLOCK;  /* This should never happen */
    }
  }
  if( locktype==NO_LOCK ){
    struct openCnt *pOpen;

    /* Decrement the shared lock counter.  Release the lock using an
    ** OS call only when all threads in this same process have released
    ** the lock.
    */
    pLock->cnt--;
    if( pLock->cnt==0 ){
      lock.l_type = F_UNLCK;
      lock.l_whence = SEEK_SET;
      lock.l_start = lock.l_len = 0L;
      if( fcntl(pFile->h, F_SETLK, &lock)==0 ){
        pLock->locktype = NO_LOCK;
      }else{
        rc = SQLITE_IOERR_UNLOCK;  /* This should never happen */
      }
    }

    /* Decrement the count of locks against this same file.  When the
    ** count reaches zero, close any other file descriptors whose close
    ** was deferred because of outstanding locks.
    */

** The pager is used to access a database disk file.  It implements
** atomic commit and rollback through the use of a journal file that
** is separate from the database file.  The pager also implements file
** locking to prevent two processes from writing the same database
** file simultaneously, or one process from reading the database while
** another is writing.
**
** @(#) $Id: pager.c,v 1.272 2006/09/15 07:28:50 drh Exp $
*/
#ifndef SQLITE_OMIT_DISKIO
#include "sqliteInt.h"
#include "os.h"
#include "pager.h"
#include <assert.h>
#include <string.h>

** The value returned is a copy of the second argument to this function. 
**
** If the second argument is SQLITE_IOERR, SQLITE_CORRUPT or SQLITE_PROTOCOL,
** the error becomes persistent. All subsequent API calls on this Pager
** will immediately return the same error code.
*/
static int pager_error(Pager *pPager, int rc){
  int rc2 = rc & 0xff;
  assert( pPager->errCode==SQLITE_FULL || pPager->errCode==SQLITE_OK );
  if( 
    rc2==SQLITE_FULL ||
    rc2==SQLITE_IOERR ||
    rc2==SQLITE_CORRUPT ||
    rc2==SQLITE_PROTOCOL
  ){
    pPager->errCode = rc;
  }
  return rc;
}

#ifdef SQLITE_CHECK_PAGES

      if( rc!=SQLITE_OK ){
        /* An error occured whilst writing to the database file or 
        ** journal in pager_recycle(). The error is not returned to the 
        ** caller of this function. Instead, set the Pager.errCode variable.
        ** The error will be returned to the user (or users, in the case 
        ** of a shared pager cache) of the pager for which the error occured.
        */
        assert( (rc&0xff)==SQLITE_IOERR || rc==SQLITE_FULL );
        assert( p->state>=PAGER_RESERVED );
        pager_error(p, rc);
      }
    }
  }

  return nReleased;

**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains the implementation of the sqlite3_prepare()
** interface, and routines that contribute to loading the database schema
** from disk.
**
** $Id: prepare.c,v 1.39 2006/09/15 07:28:50 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** Fill the InitData structure with an error message that indicates

    sqliteFree(zErrMsg);
  }else{
    sqlite3Error(db, rc, 0);
  }

  rc = sqlite3ApiExit(db, rc);
  sqlite3ReleaseThreadData();
  assert( (rc&db->errMask)==rc );
  return rc;
}

#ifndef SQLITE_OMIT_UTF16
/*
** Compile the UTF-16 encoded SQL statement zSql into a statement handle.
*/

**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This header file defines the interface that the SQLite library
** presents to client programs.
**
** @(#) $Id: sqlite.h.in,v 1.193 2006/09/15 07:28:50 drh Exp $
*/
#ifndef _SQLITE3_H_
#define _SQLITE3_H_
#include <stdarg.h>     /* Needed for the definition of va_list */

/*
** Make sure we can call this stuff from C++.

#define SQLITE_FORMAT      24   /* Auxiliary database format error */
#define SQLITE_RANGE       25   /* 2nd parameter to sqlite3_bind out of range */
#define SQLITE_NOTADB      26   /* File opened that is not a database file */
#define SQLITE_ROW         100  /* sqlite3_step() has another row ready */
#define SQLITE_DONE        101  /* sqlite3_step() has finished executing */
/* end-of-error-codes */

/*
** Using the sqlite3_extended_result_codes() API, you can cause
** SQLite to return result codes with additional information in
** their upper bits.  The lower 8 bits will be the same as the
** primary result codes above.  But the upper bits might contain
** more specific error information.
**
** To extract the primary result code from an extended result code,
** simply mask off the lower 8 bits.
**
**        primary = extended & 0xff;
**
** New result error codes may be added from time to time.  Software
** that uses the extended result codes should plan accordingly and be
** sure to always handle new unknown codes gracefully.
**
** The SQLITE_OK result code will never be extended.  It will always
** be exactly zero.
**
** The extended result codes always have the primary result code
** as a prefix.  Primary result codes only contain a single "_"
** character.  Extended result codes contain two or more "_" characters.
*/
#define SQLITE_IOERR_READ          (SQLITE_IOERR | (1<<8))
#define SQLITE_IOERR_SHORT_READ    (SQLITE_IOERR | (2<<8))
#define SQLITE_IOERR_WRITE         (SQLITE_IOERR | (3<<8))
#define SQLITE_IOERR_FSYNC         (SQLITE_IOERR | (4<<8))
#define SQLITE_IOERR_DIR_FSYNC     (SQLITE_IOERR | (5<<8))
#define SQLITE_IOERR_TRUNCATE      (SQLITE_IOERR | (6<<8))
#define SQLITE_IOERR_FSTAT         (SQLITE_IOERR | (7<<8))
#define SQLITE_IOERR_UNLOCK        (SQLITE_IOERR | (8<<8))
#define SQLITE_IOERR_RDLOCK        (SQLITE_IOERR | (9<<8))

/*
** Enable or disable the extended result codes.
*/
int sqlite3_extended_result_codes(sqlite3*, int onoff);

/*
** Each entry in an SQLite table has a unique integer key.  (The key is
** the value of the INTEGER PRIMARY KEY column if there is such a column,
** otherwise the key is generated at random.  The unique key is always
** available as the ROWID, OID, or _ROWID_ column.)  The following routine
** returns the integer key of the most recent insert in the database.
**

/*
** 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 1.527 2006/09/15 07:28:50 drh Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_

/*
** Extra interface definitions for those who need them
*/

** consistently.
*/
struct sqlite3 {
  int nDb;                      /* Number of backends currently in use */
  Db *aDb;                      /* All backends */
  int flags;                    /* Miscellanous flags. See below */
  int errCode;                  /* Most recent error code (SQLITE_*) */
  int errMask;                  /* & result codes with this before returning */
  u8 autoCommit;                /* The auto-commit flag. */
  u8 temp_store;                /* 1: file 2: memory 0: default */
  int nTable;                   /* Number of tables in the database */
  CollSeq *pDfltColl;           /* The default collating sequence (BINARY) */
  i64 lastRowid;                /* ROWID of most recent insert (see above) */
  i64 priorNewRowid;            /* Last randomly generated ROWID */
  int magic;                    /* Magic number for detect library misuse */

  if( res.azResult==0 ) return SQLITE_NOMEM;
  res.azResult[0] = 0;
  rc = sqlite3_exec(db, zSql, sqlite3_get_table_cb, &res, pzErrMsg);
  if( res.azResult ){
    assert( sizeof(res.azResult[0])>= sizeof(res.nData) );
    res.azResult[0] = (char*)res.nData;
  }
  if( (rc&0xff)==SQLITE_ABORT ){
    sqlite3_free_table(&res.azResult[1]);
    if( res.zErrMsg ){
      if( pzErrMsg ){
        sqlite3_free(*pzErrMsg);
        *pzErrMsg = sqlite3_mprintf("%s",res.zErrMsg);
      }
      sqliteFree(res.zErrMsg);
    }
    db->errCode = res.rc;
    return res.rc & db->errMask;
  }
  sqliteFree(res.zErrMsg);
  if( rc!=SQLITE_OK ){
    sqlite3_free_table(&res.azResult[1]);
    return rc & db->errMask;
  }
  if( res.nAlloc>res.nData ){
    char **azNew;
    azNew = sqlite3_realloc( res.azResult, sizeof(char*)*(res.nData+1) );
    if( azNew==0 ){
      sqlite3_free_table(&res.azResult[1]);
      return SQLITE_NOMEM;
    }
    res.nAlloc = res.nData+1;
    res.azResult = azNew;
  }
  *pazResult = &res.azResult[1];
  if( pnColumn ) *pnColumn = res.nColumn;
  if( pnRow ) *pnRow = res.nRow;
  return rc & db->errMask;
}

/*
** This routine frees the space the sqlite3_get_table() malloced.
*/
void sqlite3_free_table(
  char **azResult            /* Result returned from from sqlite3_get_table() */

**    May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing all sorts of SQLite interfaces.  This code
** is not included in the SQLite library.  It is used for automated
** testing of the SQLite library.
**
** $Id: test1.c,v 1.222 2006/09/15 07:28:51 drh Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

  }
  Tcl_AppendResult(interp, zBuf, 0);
  return TCL_OK;
}

const char *sqlite3TestErrorName(int rc){
  const char *zName = 0;
  switch( rc & 0xff ){
    case SQLITE_OK:         zName = "SQLITE_OK";          break;
    case SQLITE_ERROR:      zName = "SQLITE_ERROR";       break;
    case SQLITE_PERM:       zName = "SQLITE_PERM";        break;
    case SQLITE_ABORT:      zName = "SQLITE_ABORT";       break;
    case SQLITE_BUSY:       zName = "SQLITE_BUSY";        break;
    case SQLITE_LOCKED:     zName = "SQLITE_LOCKED";      break;
    case SQLITE_NOMEM:      zName = "SQLITE_NOMEM";       break;

    Tcl_SetResult(interp, (char *)sqlite3ErrStr(rc), TCL_STATIC);
    return TCL_ERROR;
  }
  Tcl_SetObjResult(interp, Tcl_NewBooleanObj(ret));
  return TCL_OK;
}
#endif

/*
** Usage: sqlite3_extended_result_codes   DB    BOOLEAN
**
*/
static int test_extended_result_codes(
  ClientData clientData, /* Pointer to sqlite3_enable_XXX function */
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int objc,              /* Number of arguments */
  Tcl_Obj *CONST objv[]  /* Command arguments */
){
  int enable;
  sqlite3 *db;

  if( objc!=3 ){
    Tcl_WrongNumArgs(interp, 1, objv, "DB BOOLEAN");
    return TCL_ERROR;
  }
  if( getDbPointer(interp, Tcl_GetString(objv[1]), &db) ) return TCL_ERROR;
  if( Tcl_GetBooleanFromObj(interp, objv[2], &enable) ) return TCL_ERROR;
  sqlite3_extended_result_codes(db, enable);
  return TCL_OK;
}

/*
** Usage: sqlite3_libversion_number
**
*/
static int test_libversion_number(
  ClientData clientData, /* Pointer to sqlite3_enable_XXX function */

static int test_errcode(
  void * clientData,
  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *CONST objv[]
){
  sqlite3 *db;
  int rc;
  char zBuf[30];

  if( objc!=2 ){
    Tcl_AppendResult(interp, "wrong # args: should be \"", 
       Tcl_GetString(objv[0]), " DB", 0);
    return TCL_ERROR;
  }
  if( getDbPointer(interp, Tcl_GetString(objv[1]), &db) ) return TCL_ERROR;
  rc = sqlite3_errcode(db);
  if( (rc&0xff)==rc ){
    zBuf[0] = 0;
  }else{
    sprintf(zBuf,"+%d", rc>>8);
  }
  Tcl_AppendResult(interp, (char *)errorName(rc), zBuf, 0);
  return TCL_OK;
}

/*
** Usage:   test_errmsg DB
**
** Returns the UTF-8 representation of the error message string for the

     { "sqlite3_soft_heap_limit",       test_soft_heap_limit,    0},
     { "sqlite3_clear_tsd_memdebug",    test_clear_tsd_memdebug, 0},
     { "sqlite3_tsd_release",           test_tsd_release,        0},
     { "sqlite3_thread_cleanup",        test_thread_cleanup,     0},

     { "sqlite3_load_extension",        test_load_extension,     0},
     { "sqlite3_enable_load_extension", test_enable_load,        0},
     { "sqlite3_extended_result_codes", test_extended_result_codes, 0},

     /* sqlite3_column_*() API */
     { "sqlite3_column_count",          test_column_count  ,0 },
     { "sqlite3_data_count",            test_data_count    ,0 },
     { "sqlite3_column_type",           test_column_type   ,0 },
     { "sqlite3_column_blob",           test_column_blob   ,0 },
     { "sqlite3_column_double",         test_column_double ,0 },

**
*************************************************************************
** Utility functions used throughout sqlite.
**
** This file contains functions for allocating memory, comparing
** strings, and stuff like that.
**
** $Id: util.c,v 1.193 2006/09/15 07:28:51 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <stdarg.h>
#include <ctype.h>

/*

int sqlite3ApiExit(sqlite3* db, int rc){
  if( sqlite3MallocFailed() ){
    mallocHasFailed = 0;
    sqlite3OsLeaveMutex();
    sqlite3Error(db, SQLITE_NOMEM, 0);
    rc = SQLITE_NOMEM;
  }
  return rc & (db ? db->errMask : 0xff);
}

/* 
** Return true is a malloc has failed in this thread since the last call
** to sqlite3ApiExit(), or false otherwise.
*/
int sqlite3MallocFailed(){

    assert( p->aOp[p->nOp-1].p3type==P3_DYNAMIC );
    db->xProfile(db->pProfileArg, p->aOp[p->nOp-1].p3, elapseTime);
  }
#endif

  sqlite3Error(p->db, rc, 0);
  p->rc = sqlite3ApiExit(p->db, p->rc);
  assert( (rc&0xff)==rc );
  return rc;
}

/*
** Extract the user data from a sqlite3_context structure and return a
** pointer to it.
*/

    return SQLITE_ERROR;
  }
  for(i=0; rc==SQLITE_OK && i<pFrom->nVar; i++){
    sqlite3MallocDisallow();
    rc = sqlite3VdbeMemMove(&pTo->aVar[i], &pFrom->aVar[i]);
    sqlite3MallocAllow();
  }
  assert( rc==SQLITE_OK || rc==SQLITE_NOMEM );
  return rc;
}

/*
** Return the sqlite3* database handle to which the prepared statement given
** in the argument belongs.  This is the same database handle that was
** the first argument to the sqlite3_prepare() that was used to create
** the statement in the first place.
*/
sqlite3 *sqlite3_db_handle(sqlite3_stmt *pStmt){
  return pStmt ? ((Vdbe*)pStmt)->db : 0;
}

** again.
**
** To look at it another way, this routine resets the state of the
** virtual machine from VDBE_MAGIC_RUN or VDBE_MAGIC_HALT back to
** VDBE_MAGIC_INIT.
*/
int sqlite3VdbeReset(Vdbe *p){
  sqlite3 *db;
  if( p->magic!=VDBE_MAGIC_RUN && p->magic!=VDBE_MAGIC_HALT ){
    sqlite3Error(p->db, SQLITE_MISUSE, 0);
    return SQLITE_MISUSE;
  }
  db = p->db;

  /* If the VM did not run to completion or if it encountered an
  ** error, then it might not have been halted properly.  So halt
  ** it now.
  */
  sqlite3SafetyOn(db);
  sqlite3VdbeHalt(p);
  sqlite3SafetyOff(db);

  /* If the VDBE has be run even partially, then transfer the error code
  ** and error message from the VDBE into the main database structure.  But
  ** if the VDBE has just been set to run but has not actually executed any
  ** instructions yet, leave the main database error information unchanged.
  */
  if( p->pc>=0 ){
    if( p->zErrMsg ){

      sqlite3ValueSetStr(db->pErr, -1, p->zErrMsg, SQLITE_UTF8, sqlite3FreeX);
      db->errCode = p->rc;
      p->zErrMsg = 0;
    }else if( p->rc ){
      sqlite3Error(db, p->rc, 0);
    }else{
      sqlite3Error(db, SQLITE_OK, 0);
    }
  }else if( p->rc && p->expired ){
    /* The expired flag was set on the VDBE before the first call
    ** to sqlite3_step(). For consistency (since sqlite3_step() was
    ** called), set the database error in this case as well.
    */
    sqlite3Error(db, p->rc, 0);
  }

  /* Reclaim all memory used by the VDBE
  */
  Cleanup(p);

  /* Save profiling information from this VDBE run.

      fclose(out);
    }
  }
#endif
  p->magic = VDBE_MAGIC_INIT;
  p->aborted = 0;
  if( p->rc==SQLITE_SCHEMA ){
    sqlite3ResetInternalSchema(db, 0);
  }
  return p->rc & db->errMask;
}
 
/*
** Clean up and delete a VDBE after execution.  Return an integer which is
** the result code.  Write any error message text into *pzErrMsg.
*/
int sqlite3VdbeFinalize(Vdbe *p){
  int rc = SQLITE_OK;
  if( p->magic==VDBE_MAGIC_RUN || p->magic==VDBE_MAGIC_HALT ){
    rc = sqlite3VdbeReset(p);
    assert( (rc & p->db->errMask)==rc );
  }else if( p->magic!=VDBE_MAGIC_INIT ){
    return SQLITE_MISUSE;
  }
  sqlite3VdbeDelete(p);
  return rc;
}

/*
** 2006 June 10
**
** 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 help implement virtual tables.
**
** $Id: vtab.c,v 1.36 2006/09/15 07:28:51 drh Exp $
*/
#ifndef SQLITE_OMIT_VIRTUALTABLE
#include "sqliteInt.h"

/*
** External API function used to create a new virtual-table module.
*/

  sParse.declareVtab = 0;

  sqlite3_finalize((sqlite3_stmt*)sParse.pVdbe);
  sqlite3DeleteTable(0, sParse.pNewTable);
  sParse.pNewTable = 0;
  db->pVTab = 0;

  assert( (rc&0xff)==rc );
  return rc;
}

/*
** This function is invoked by the vdbe to call the xDestroy method
** of the virtual table named zTab in database iDb. This occurs
** when a DROP TABLE is mentioned.

# 2006 September 14
#
# 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 regression tests for SQLite library.  The
# focus of this script is testing the FTS1 module.
#
# $Id: fts1c.test,v 1.4 2006/09/15 07:28:51 drh Exp $
#

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

# If SQLITE_ENABLE_FTS1 is defined, omit this file.
ifcapable !fts1 {

  }
} {6 17 25 38 42 73 74}
do_test fts1c-1.8 {
  execsql {
    SELECT rowid FROM email WHERE _all MATCH '-mark susan'
  }
} {24}
do_test fts1c-1.9 {
  execsql {
    SELECT rowid FROM email WHERE _all MATCH 'mark OR susan'
  }
} {6 17 24 25 38 40 42 73 74}


finish_test

# This file implements regression tests for SQLite library.  The
# focus of this file is testing for correct handling of I/O errors
# such as writes failing because the disk is full.
# 
# The tests in this file use special facilities that are only
# available in the SQLite test fixture.
#
# $Id: ioerr.test,v 1.27 2006/09/15 07:28:51 drh Exp $

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


# If SQLITE_DEFAULT_AUTOVACUUM is set to true, then a simulated IO error
# on the 8th IO operation in the SQL script below doesn't report an error.
#
# This is because the 8th IO call attempts to read page 2 of the database
# file when the file on disk is only 1 page. The pager layer detects that
# this has happened and suppresses the error returned by the OS layer.
#
do_ioerr_test ioerr-1 -erc 1 -sqlprep {
  SELECT * FROM sqlite_master;
} -sqlbody {
  CREATE TABLE t1(a,b,c);
  SELECT * FROM sqlite_master;
  BEGIN TRANSACTION;
  INSERT INTO t1 VALUES(1,2,3);
  INSERT INTO t1 VALUES(4,5,6);

# 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 implements some common TCL routines used for regression
# testing the SQLite library
#
# $Id: tester.tcl,v 1.67 2006/09/15 07:28:51 drh Exp $

# Make sure tclsqlite3 was compiled correctly.  Abort now with an
# error message if not.
#
if {[sqlite3 -tcl-uses-utf]} {
  if {"\u1234"=="u1234"} {
    puts stderr "***** BUILD PROBLEM *****"

# used to name the tests executed by this proc. Options are as follows:
#
#     -tclprep          TCL script to run to prepare test.
#     -sqlprep          SQL script to run to prepare test.
#     -tclbody          TCL script to run with IO error simulation.
#     -sqlbody          TCL script to run with IO error simulation.
#     -exclude          List of 'N' values not to test.
#     -erc              Use extended result codes
#     -start            Value of 'N' to begin with (default 1)
#
#     -cksum            Boolean. If true, test that the database does
#                       not change during the execution of the test case.
#
proc do_ioerr_test {testname args} {

  set ::ioerropts(-start) 1
  set ::ioerropts(-cksum) 0
  set ::ioerropts(-erc) 0
  array set ::ioerropts $args

  set ::go 1
  for {set n $::ioerropts(-start)} {$::go} {incr n} {
 
    # Skip this IO error if it was specified with the "-exclude" option.
    if {[info exists ::ioerropts(-exclude)]} {
      if {[lsearch $::ioerropts(-exclude) $n]!=-1} continue
    }

    # Delete the files test.db and test2.db, then execute the TCL and 
    # SQL (in that order) to prepare for the test case.
    do_test $testname.$n.1 {
      set ::sqlite_io_error_pending 0
      catch {db close}
      catch {file delete -force test.db}
      catch {file delete -force test.db-journal}
      catch {file delete -force test2.db}
      catch {file delete -force test2.db-journal}
      set ::DB [sqlite3 db test.db; sqlite3_connection_pointer db]
      sqlite3_extended_result_codes $::DB $::ioerropts(-erc)
      if {[info exists ::ioerropts(-tclprep)]} {
        eval $::ioerropts(-tclprep)
      }
      if {[info exists ::ioerropts(-sqlprep)]} {
        execsql $::ioerropts(-sqlprep)
      }
      expr 0

    }

    # Execute the TCL Script created in the above block. If
    # there are at least N IO operations performed by SQLite as
    # a result of the script, the Nth will fail.
    do_test $testname.$n.3 {
      set r [catch $::ioerrorbody msg]
      # puts rc=[sqlite3_errcode $::DB]
      set ::go [expr {$::sqlite_io_error_pending<=0}]
      set s [expr $::sqlite_io_error_hit==0]
      set ::sqlite_io_error_hit 0
      # puts "$::sqlite_io_error_pending $r $msg"
      # puts "r=$r s=$s go=$::go msg=\"$msg\""
      expr { ($s && !$r && !$::go) || (!$s && $r && $::go) }
      # expr {$::sqlite_io_error_pending>0 || $r!=0}