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: main.c,v 1.347 2006/06/23 11:34:55 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

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

  ** that case. But maybe there should be an extra magic value for the
  ** "failed to open" state.
  */
  if( db->magic!=SQLITE_MAGIC_CLOSED && sqlite3SafetyOn(db) ){
    /* printf("DID NOT CLOSE\n"); fflush(stdout); */
    return SQLITE_ERROR;
  }

  sqlite3VtabRollback(db);

  for(j=0; j<db->nDb; j++){
    struct Db *pDb = &db->aDb[j];
    if( pDb->pBt ){
      sqlite3BtreeClose(pDb->pBt);
      pDb->pBt = 0;
      if( j!=1 ){

**    May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing the virtual table interfaces.  This code
** is not included in the SQLite library.  It is used for automated
** testing of the SQLite library.
**
** $Id: test8.c,v 1.33 2006/06/23 11:34:55 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

  if( !pVtab ){
    return SQLITE_NOMEM;
  }
  pVtab->interp = (Tcl_Interp *)pAux;
  pVtab->db = db;
  pVtab->zTableName = sqlite3MPrintf("%s", argv[3]);
  if( !pVtab->zTableName ){
    echoDestructor((sqlite3_vtab *)pVtab);
    return SQLITE_NOMEM;
  }

  for(i=0; i<argc; i++){
    appendToEchoModule(pVtab->interp, argv[i]);
  }

**
** 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 1.567 2006/06/23 11:34:55 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>
#include "vdbeInt.h"

/*

    pVtabCursor->pVtab = pVtab;

    /* Initialise vdbe cursor object */
    pCur = allocateCursor(p, pOp->p1, -1);
    if( pCur ){
      pCur->pVtabCursor = pVtabCursor;
      pCur->pModule = pVtabCursor->pVtab->pModule;
    }else{
      pModule->xClose(pVtabCursor);
    }
  }
  break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifndef SQLITE_OMIT_VIRTUALTABLE

*/
static void closeAllCursors(Vdbe *p){
  int i;
  if( p->apCsr==0 ) return;
  for(i=0; i<p->nCursor; i++){
    if( !p->inVtabMethod || (p->apCsr[i] && !p->apCsr[i]->pVtabCursor) ){
      sqlite3VdbeFreeCursor(p, p->apCsr[i]);

      p->apCsr[i] = 0;
    }
  }
}

/*
** Clean up the VM after execution.
**
** This routine will automatically close any cursors, lists, and/or

  if( sqlite3MallocFailed() ){
    p->rc = SQLITE_NOMEM;
  }
  if( p->magic!=VDBE_MAGIC_RUN ){
    /* Already halted.  Nothing to do. */
    assert( p->magic==VDBE_MAGIC_HALT );
#ifndef SQLITE_OMIT_VIRTUALTABLE
    closeAllCursors(p);
#endif
    return SQLITE_OK;
  }
  closeAllCursors(p);
  checkActiveVdbeCnt(db);

  /* No commit or rollback needed if the program never started */
  if( p->pc>=0 ){

/*
** 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 1.22 2006/06/23 11:34:55 danielk1977 Exp $
*/
#ifndef SQLITE_OMIT_VIRTUALTABLE
#include "sqliteInt.h"

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

** Add a new module argument to pTable->azModuleArg[].
** The string is not copied - the pointer is stored.  The
** string will be freed automatically when the table is
** deleted.
*/
static void addModuleArgument(Table *pTable, char *zArg){
  int i = pTable->nModuleArg++;
  int nBytes = sizeof(char *)*(1+pTable->nModuleArg);
  char **azModuleArg;
  azModuleArg = sqliteRealloc(pTable->azModuleArg, nBytes);

  if( azModuleArg==0 ){
    int j;
    for(j=0; j<i; j++){
      sqliteFree(pTable->azModuleArg[j]);
    }
    sqliteFree(zArg);
    sqliteFree(pTable->azModuleArg);
    pTable->nModuleArg = 0;
  }else{
    azModuleArg[i] = zArg;
    azModuleArg[i+1] = 0;
  }
  pTable->azModuleArg = azModuleArg;
}

/*
** The parser calls this routine when it first sees a CREATE VIRTUAL TABLE
** statement.  The module name has been parsed, but the optional list
** of parameters that follow the module name are still pending.
*/