webengine/webkitutils/SqliteSymbian/prepare.c
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 13:31:38 +0200
changeset 37 cb62a4f66ebe
parent 0 dd21522fd290
permissions -rw-r--r--
Revision: 200951 Kit: 201001
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/*
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** 2005 May 25
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**
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** The author disclaims copyright to this source code.  In place of
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** a legal notice, here is a blessing:
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**
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**    May you do good and not evil.
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**    May you find forgiveness for yourself and forgive others.
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**    May you share freely, never taking more than you give.
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**
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*************************************************************************
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** This file contains the implementation of the sqlite3_prepare()
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** interface, and routines that contribute to loading the database schema
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** from disk.
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**
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** $Id: prepare.c,v 1.40 2006/09/23 20:36:02 drh Exp $
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*/
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#include "sqliteInt.h"
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#include "os.h"
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#include <ctype.h>
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/*
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** Fill the InitData structure with an error message that indicates
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** that the database is corrupt.
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*/
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static void corruptSchema(InitData *pData, const char *zExtra){
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  if( !sqlite3MallocFailed() ){
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    sqlite3SetString(pData->pzErrMsg, "malformed database schema",
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       zExtra!=0 && zExtra[0]!=0 ? " - " : (char*)0, zExtra, (char*)0);
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  }
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  pData->rc = SQLITE_CORRUPT;
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}
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/*
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** This is the callback routine for the code that initializes the
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** database.  See sqlite3Init() below for additional information.
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** This routine is also called from the OP_ParseSchema opcode of the VDBE.
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**
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** Each callback contains the following information:
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**
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**     argv[0] = name of thing being created
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**     argv[1] = root page number for table or index. 0 for trigger or view.
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**     argv[2] = SQL text for the CREATE statement.
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**
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*/
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int sqlite3InitCallback(void *pInit, int argc, char **argv, char **azColName){
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  InitData *pData = (InitData*)pInit;
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  sqlite3 *db = pData->db;
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  int iDb = pData->iDb;
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  pData->rc = SQLITE_OK;
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  DbClearProperty(db, iDb, DB_Empty);
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  if( sqlite3MallocFailed() ){
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    corruptSchema(pData, 0);
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    return SQLITE_NOMEM;
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  }
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  assert( argc==3 );
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  if( argv==0 ) return 0;   /* Might happen if EMPTY_RESULT_CALLBACKS are on */
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  if( argv[1]==0 ){
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    corruptSchema(pData, 0);
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    return 1;
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  }
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  assert( iDb>=0 && iDb<db->nDb );
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  if( argv[2] && argv[2][0] ){
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    /* Call the parser to process a CREATE TABLE, INDEX or VIEW.
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    ** But because db->init.busy is set to 1, no VDBE code is generated
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    ** or executed.  All the parser does is build the internal data
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    ** structures that describe the table, index, or view.
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    */
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    char *zErr;
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    int rc;
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    assert( db->init.busy );
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    db->init.iDb = iDb;
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    db->init.newTnum = atoi(argv[1]);
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    rc = sqlite3_exec(db, argv[2], 0, 0, &zErr);
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    db->init.iDb = 0;
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    assert( rc!=SQLITE_OK || zErr==0 );
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    if( SQLITE_OK!=rc ){
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      pData->rc = rc;
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      if( rc==SQLITE_NOMEM ){
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        sqlite3FailedMalloc();
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      }else if( rc!=SQLITE_INTERRUPT ){
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        corruptSchema(pData, zErr);
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      }
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      sqlite3_free(zErr);
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      return 1;
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    }
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  }else{
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    /* If the SQL column is blank it means this is an index that
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    ** was created to be the PRIMARY KEY or to fulfill a UNIQUE
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    ** constraint for a CREATE TABLE.  The index should have already
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    ** been created when we processed the CREATE TABLE.  All we have
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    ** to do here is record the root page number for that index.
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    */
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    Index *pIndex;
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    pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zName);
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    if( pIndex==0 || pIndex->tnum!=0 ){
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      /* This can occur if there exists an index on a TEMP table which
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      ** has the same name as another index on a permanent index.  Since
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      ** the permanent table is hidden by the TEMP table, we can also
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      ** safely ignore the index on the permanent table.
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      */
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      /* Do Nothing */;
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    }else{
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      pIndex->tnum = atoi(argv[1]);
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    }
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  }
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  return 0;
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}
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/*
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** Attempt to read the database schema and initialize internal
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** data structures for a single database file.  The index of the
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** database file is given by iDb.  iDb==0 is used for the main
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** database.  iDb==1 should never be used.  iDb>=2 is used for
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** auxiliary databases.  Return one of the SQLITE_ error codes to
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** indicate success or failure.
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*/
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static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){
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  int rc;
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  BtCursor *curMain;
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  int size;
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  Table *pTab;
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  Db *pDb;
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  char const *azArg[4];
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  int meta[10];
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  InitData initData;
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  char const *zMasterSchema;
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  char const *zMasterName = SCHEMA_TABLE(iDb);
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  /*
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  ** The master database table has a structure like this
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  */
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  static const char master_schema[] = 
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     "CREATE TABLE sqlite_master(\n"
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     "  type text,\n"
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     "  name text,\n"
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     "  tbl_name text,\n"
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     "  rootpage integer,\n"
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     "  sql text\n"
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     ")"
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  ;
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#ifndef SQLITE_OMIT_TEMPDB
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  static const char temp_master_schema[] = 
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     "CREATE TEMP TABLE sqlite_temp_master(\n"
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     "  type text,\n"
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     "  name text,\n"
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     "  tbl_name text,\n"
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     "  rootpage integer,\n"
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     "  sql text\n"
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     ")"
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  ;
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#else
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  #define temp_master_schema 0
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#endif
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  assert( iDb>=0 && iDb<db->nDb );
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  assert( db->aDb[iDb].pSchema );
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  /* zMasterSchema and zInitScript are set to point at the master schema
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  ** and initialisation script appropriate for the database being
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  ** initialised. zMasterName is the name of the master table.
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  */
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  if( !OMIT_TEMPDB && iDb==1 ){
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    zMasterSchema = temp_master_schema;
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  }else{
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    zMasterSchema = master_schema;
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  }
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  zMasterName = SCHEMA_TABLE(iDb);
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  /* Construct the schema tables.  */
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  sqlite3SafetyOff(db);
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  azArg[0] = zMasterName;
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  azArg[1] = "1";
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  azArg[2] = zMasterSchema;
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  azArg[3] = 0;
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  initData.db = db;
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  initData.iDb = iDb;
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  initData.pzErrMsg = pzErrMsg;
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  rc = sqlite3InitCallback(&initData, 3, (char **)azArg, 0);
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  if( rc ){
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    sqlite3SafetyOn(db);
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    return initData.rc;
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  }
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  pTab = sqlite3FindTable(db, zMasterName, db->aDb[iDb].zName);
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  if( pTab ){
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    pTab->readOnly = 1;
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  }
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  sqlite3SafetyOn(db);
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  /* Create a cursor to hold the database open
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  */
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  pDb = &db->aDb[iDb];
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  if( pDb->pBt==0 ){
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    if( !OMIT_TEMPDB && iDb==1 ){
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      DbSetProperty(db, 1, DB_SchemaLoaded);
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    }
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    return SQLITE_OK;
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  }
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  rc = sqlite3BtreeCursor(pDb->pBt, MASTER_ROOT, 0, 0, 0, &curMain);
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  if( rc!=SQLITE_OK && rc!=SQLITE_EMPTY ){
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    sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
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    return rc;
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  }
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  /* Get the database meta information.
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  **
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  ** Meta values are as follows:
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  **    meta[0]   Schema cookie.  Changes with each schema change.
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  **    meta[1]   File format of schema layer.
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  **    meta[2]   Size of the page cache.
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  **    meta[3]   Use freelist if 0.  Autovacuum if greater than zero.
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  **    meta[4]   Db text encoding. 1:UTF-8 2:UTF-16LE 3:UTF-16BE
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  **    meta[5]   The user cookie. Used by the application.
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  **    meta[6]   
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  **    meta[7]
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  **    meta[8]
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  **    meta[9]
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  **
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  ** Note: The #defined SQLITE_UTF* symbols in sqliteInt.h correspond to
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  ** the possible values of meta[4].
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  */
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  if( rc==SQLITE_OK ){
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    int i;
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    for(i=0; rc==SQLITE_OK && i<sizeof(meta)/sizeof(meta[0]); i++){
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      rc = sqlite3BtreeGetMeta(pDb->pBt, i+1, (u32 *)&meta[i]);
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    }
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    if( rc ){
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      sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
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      sqlite3BtreeCloseCursor(curMain);
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      return rc;
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    }
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  }else{
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    memset(meta, 0, sizeof(meta));
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  }
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   237
  pDb->pSchema->schema_cookie = meta[0];
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   238
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   239
  /* If opening a non-empty database, check the text encoding. For the
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  ** main database, set sqlite3.enc to the encoding of the main database.
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   241
  ** For an attached db, it is an error if the encoding is not the same
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   242
  ** as sqlite3.enc.
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  */
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   244
  if( meta[4] ){  /* text encoding */
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   245
    if( iDb==0 ){
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   246
      /* If opening the main database, set ENC(db). */
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   247
      ENC(db) = (u8)meta[4];
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      db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "BINARY", 6, 0);
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   249
    }else{
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   250
      /* If opening an attached database, the encoding much match ENC(db) */
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   251
      if( meta[4]!=ENC(db) ){
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        sqlite3BtreeCloseCursor(curMain);
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   253
        sqlite3SetString(pzErrMsg, "attached databases must use the same"
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            " text encoding as main database", (char*)0);
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   255
        return SQLITE_ERROR;
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   256
      }
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   257
    }
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   258
  }else{
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   259
    DbSetProperty(db, iDb, DB_Empty);
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   260
  }
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   261
  pDb->pSchema->enc = ENC(db);
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   262
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   263
  size = meta[2];
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   264
  if( size==0 ){ size = MAX_PAGES; }
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   265
  pDb->pSchema->cache_size = size;
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   266
  sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
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   267
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   268
  /*
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   269
  ** file_format==1    Version 3.0.0.
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   270
  ** file_format==2    Version 3.1.3.  // ALTER TABLE ADD COLUMN
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   271
  ** file_format==3    Version 3.1.4.  // ditto but with non-NULL defaults
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   272
  ** file_format==4    Version 3.3.0.  // DESC indices.  Boolean constants
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  */
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   274
  pDb->pSchema->file_format = meta[1];
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   275
  if( pDb->pSchema->file_format==0 ){
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   276
    pDb->pSchema->file_format = 1;
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   277
  }
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   278
  if( pDb->pSchema->file_format>SQLITE_MAX_FILE_FORMAT ){
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   279
    sqlite3BtreeCloseCursor(curMain);
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   280
    sqlite3SetString(pzErrMsg, "unsupported file format", (char*)0);
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   281
    return SQLITE_ERROR;
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   282
  }
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parents:
diff changeset
   283
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diff changeset
   284
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  /* Read the schema information out of the schema tables
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parents:
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   286
  */
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   287
  assert( db->init.busy );
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   288
  if( rc==SQLITE_EMPTY ){
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   289
    /* For an empty database, there is nothing to read */
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   290
    rc = SQLITE_OK;
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parents:
diff changeset
   291
  }else{
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   292
    char *zSql;
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   293
    zSql = sqlite3MPrintf(
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parents:
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   294
        "SELECT name, rootpage, sql FROM '%q'.%s",
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parents:
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   295
        db->aDb[iDb].zName, zMasterName);
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parents:
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   296
    sqlite3SafetyOff(db);
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parents:
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   297
    rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0);
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parents:
diff changeset
   298
    if( rc==SQLITE_ABORT ) rc = initData.rc;
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parents:
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   299
    sqlite3SafetyOn(db);
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   300
    sqliteFree(zSql);
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parents:
diff changeset
   301
#ifndef SQLITE_OMIT_ANALYZE
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   302
    if( rc==SQLITE_OK ){
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   303
      sqlite3AnalysisLoad(db, iDb);
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diff changeset
   304
    }
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parents:
diff changeset
   305
#endif
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   306
    sqlite3BtreeCloseCursor(curMain);
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parents:
diff changeset
   307
  }
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parents:
diff changeset
   308
  if( sqlite3MallocFailed() ){
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parents:
diff changeset
   309
    /* sqlite3SetString(pzErrMsg, "out of memory", (char*)0); */
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   310
    rc = SQLITE_NOMEM;
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   311
    sqlite3ResetInternalSchema(db, 0);
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parents:
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   312
  }
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parents:
diff changeset
   313
  if( rc==SQLITE_OK ){
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   314
    DbSetProperty(db, iDb, DB_SchemaLoaded);
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parents:
diff changeset
   315
  }else{
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diff changeset
   316
    sqlite3ResetInternalSchema(db, iDb);
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parents:
diff changeset
   317
  }
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parents:
diff changeset
   318
  return rc;
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parents:
diff changeset
   319
}
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parents:
diff changeset
   320
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parents:
diff changeset
   321
/*
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parents:
diff changeset
   322
** Initialize all database files - the main database file, the file
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parents:
diff changeset
   323
** used to store temporary tables, and any additional database files
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parents:
diff changeset
   324
** created using ATTACH statements.  Return a success code.  If an
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parents:
diff changeset
   325
** error occurs, write an error message into *pzErrMsg.
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parents:
diff changeset
   326
**
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diff changeset
   327
** After a database is initialized, the DB_SchemaLoaded bit is set
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parents:
diff changeset
   328
** bit is set in the flags field of the Db structure. If the database
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parents:
diff changeset
   329
** file was of zero-length, then the DB_Empty flag is also set.
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parents:
diff changeset
   330
*/
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parents:
diff changeset
   331
int sqlite3Init(sqlite3 *db, char **pzErrMsg){
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   332
  int i, rc;
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parents:
diff changeset
   333
  int called_initone = 0;
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parents:
diff changeset
   334
  
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diff changeset
   335
  if( db->init.busy ) return SQLITE_OK;
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parents:
diff changeset
   336
  rc = SQLITE_OK;
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parents:
diff changeset
   337
  db->init.busy = 1;
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parents:
diff changeset
   338
  for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
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parents:
diff changeset
   339
    if( DbHasProperty(db, i, DB_SchemaLoaded) || i==1 ) continue;
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parents:
diff changeset
   340
    rc = sqlite3InitOne(db, i, pzErrMsg);
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parents:
diff changeset
   341
    if( rc ){
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parents:
diff changeset
   342
      sqlite3ResetInternalSchema(db, i);
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parents:
diff changeset
   343
    }
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parents:
diff changeset
   344
    called_initone = 1;
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parents:
diff changeset
   345
  }
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parents:
diff changeset
   346
dd21522fd290 Revision: 200911
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parents:
diff changeset
   347
  /* Once all the other databases have been initialised, load the schema
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parents:
diff changeset
   348
  ** for the TEMP database. This is loaded last, as the TEMP database
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parents:
diff changeset
   349
  ** schema may contain references to objects in other databases.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   350
  */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   351
#ifndef SQLITE_OMIT_TEMPDB
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   352
  if( rc==SQLITE_OK && db->nDb>1 && !DbHasProperty(db, 1, DB_SchemaLoaded) ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   353
    rc = sqlite3InitOne(db, 1, pzErrMsg);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   354
    if( rc ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   355
      sqlite3ResetInternalSchema(db, 1);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   356
    }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   357
    called_initone = 1;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   358
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   359
#endif
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   360
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   361
  db->init.busy = 0;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   362
  if( rc==SQLITE_OK && called_initone ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   363
    sqlite3CommitInternalChanges(db);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   364
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   365
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   366
  return rc; 
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   367
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   368
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   369
/*
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   370
** This routine is a no-op if the database schema is already initialised.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   371
** Otherwise, the schema is loaded. An error code is returned.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   372
*/
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   373
int sqlite3ReadSchema(Parse *pParse){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   374
  int rc = SQLITE_OK;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   375
  sqlite3 *db = pParse->db;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   376
  if( !db->init.busy ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   377
    rc = sqlite3Init(db, &pParse->zErrMsg);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   378
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   379
  if( rc!=SQLITE_OK ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   380
    pParse->rc = rc;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   381
    pParse->nErr++;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   382
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   383
  return rc;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   384
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   385
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   386
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   387
/*
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   388
** Check schema cookies in all databases.  If any cookie is out
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   389
** of date, return 0.  If all schema cookies are current, return 1.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   390
*/
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   391
static int schemaIsValid(sqlite3 *db){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   392
  int iDb;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   393
  int rc;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   394
  BtCursor *curTemp;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   395
  int cookie;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   396
  int allOk = 1;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   397
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   398
  for(iDb=0; allOk && iDb<db->nDb; iDb++){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   399
    Btree *pBt;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   400
    pBt = db->aDb[iDb].pBt;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   401
    if( pBt==0 ) continue;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   402
    rc = sqlite3BtreeCursor(pBt, MASTER_ROOT, 0, 0, 0, &curTemp);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   403
    if( rc==SQLITE_OK ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   404
      rc = sqlite3BtreeGetMeta(pBt, 1, (u32 *)&cookie);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   405
      if( rc==SQLITE_OK && cookie!=db->aDb[iDb].pSchema->schema_cookie ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   406
        allOk = 0;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   407
      }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   408
      sqlite3BtreeCloseCursor(curTemp);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   409
    }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   410
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   411
  return allOk;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   412
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   413
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   414
/*
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   415
** Convert a schema pointer into the iDb index that indicates
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   416
** which database file in db->aDb[] the schema refers to.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   417
**
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   418
** If the same database is attached more than once, the first
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   419
** attached database is returned.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   420
*/
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   421
int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   422
  int i = -1000000;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   423
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   424
  /* If pSchema is NULL, then return -1000000. This happens when code in 
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   425
  ** expr.c is trying to resolve a reference to a transient table (i.e. one
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   426
  ** created by a sub-select). In this case the return value of this 
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   427
  ** function should never be used.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   428
  **
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   429
  ** We return -1000000 instead of the more usual -1 simply because using
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   430
  ** -1000000 as incorrectly using -1000000 index into db->aDb[] is much 
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   431
  ** more likely to cause a segfault than -1 (of course there are assert()
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   432
  ** statements too, but it never hurts to play the odds).
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   433
  */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   434
  if( pSchema ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   435
    for(i=0; i<db->nDb; i++){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   436
      if( db->aDb[i].pSchema==pSchema ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   437
        break;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   438
      }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   439
    }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   440
    assert( i>=0 &&i>=0 &&  i<db->nDb );
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   441
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   442
  return i;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   443
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   444
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   445
/*
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   446
** Compile the UTF-8 encoded SQL statement zSql into a statement handle.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   447
*/
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   448
int sqlite3_prepare(
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   449
  sqlite3 *db,              /* Database handle. */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   450
  const char *zSql,         /* UTF-8 encoded SQL statement. */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   451
  int nBytes,               /* Length of zSql in bytes. */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   452
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   453
  const char** pzTail       /* OUT: End of parsed string */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   454
){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   455
  Parse sParse;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   456
  char *zErrMsg = 0;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   457
  int rc = SQLITE_OK;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   458
  int i;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   459
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   460
  /* Assert that malloc() has not failed */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   461
  assert( !sqlite3MallocFailed() );
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   462
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   463
  assert( ppStmt );
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   464
  *ppStmt = 0;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   465
  if( sqlite3SafetyOn(db) ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   466
    return SQLITE_MISUSE;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   467
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   468
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   469
  /* If any attached database schemas are locked, do not proceed with
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   470
  ** compilation. Instead return SQLITE_LOCKED immediately.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   471
  */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   472
  for(i=0; i<db->nDb; i++) {
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   473
    Btree *pBt = db->aDb[i].pBt;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   474
    if( pBt && sqlite3BtreeSchemaLocked(pBt) ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   475
      const char *zDb = db->aDb[i].zName;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   476
      sqlite3Error(db, SQLITE_LOCKED, "database schema is locked: %s", zDb);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   477
      sqlite3SafetyOff(db);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   478
      return SQLITE_LOCKED;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   479
    }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   480
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   481
  
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   482
  memset(&sParse, 0, sizeof(sParse));
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   483
  sParse.db = db;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   484
  if( nBytes>=0 && zSql[nBytes]!=0 ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   485
    char *zSqlCopy = sqlite3StrNDup(zSql, nBytes);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   486
    sqlite3RunParser(&sParse, zSqlCopy, &zErrMsg);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   487
    sParse.zTail += zSql - zSqlCopy;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   488
    sqliteFree(zSqlCopy);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   489
  }else{
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   490
    sqlite3RunParser(&sParse, zSql, &zErrMsg);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   491
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   492
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   493
  if( sqlite3MallocFailed() ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   494
    sParse.rc = SQLITE_NOMEM;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   495
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   496
  if( sParse.rc==SQLITE_DONE ) sParse.rc = SQLITE_OK;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   497
  if( sParse.checkSchema && !schemaIsValid(db) ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   498
    sParse.rc = SQLITE_SCHEMA;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   499
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   500
  if( sParse.rc==SQLITE_SCHEMA ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   501
    sqlite3ResetInternalSchema(db, 0);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   502
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   503
  if( sqlite3MallocFailed() ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   504
    sParse.rc = SQLITE_NOMEM;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   505
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   506
  if( pzTail ) *pzTail = sParse.zTail;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   507
  rc = sParse.rc;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   508
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   509
#ifndef SQLITE_OMIT_EXPLAIN
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   510
  if( rc==SQLITE_OK && sParse.pVdbe && sParse.explain ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   511
    if( sParse.explain==2 ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   512
      sqlite3VdbeSetNumCols(sParse.pVdbe, 3);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   513
      sqlite3VdbeSetColName(sParse.pVdbe, 0, COLNAME_NAME, "order", P3_STATIC);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   514
      sqlite3VdbeSetColName(sParse.pVdbe, 1, COLNAME_NAME, "from", P3_STATIC);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   515
      sqlite3VdbeSetColName(sParse.pVdbe, 2, COLNAME_NAME, "detail", P3_STATIC);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   516
    }else{
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   517
      sqlite3VdbeSetNumCols(sParse.pVdbe, 5);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   518
      sqlite3VdbeSetColName(sParse.pVdbe, 0, COLNAME_NAME, "addr", P3_STATIC);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   519
      sqlite3VdbeSetColName(sParse.pVdbe, 1, COLNAME_NAME, "opcode", P3_STATIC);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   520
      sqlite3VdbeSetColName(sParse.pVdbe, 2, COLNAME_NAME, "p1", P3_STATIC);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   521
      sqlite3VdbeSetColName(sParse.pVdbe, 3, COLNAME_NAME, "p2", P3_STATIC);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   522
      sqlite3VdbeSetColName(sParse.pVdbe, 4, COLNAME_NAME, "p3", P3_STATIC);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   523
    }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   524
  } 
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   525
#endif
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   526
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   527
  if( sqlite3SafetyOff(db) ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   528
    rc = SQLITE_MISUSE;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   529
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   530
  if( rc==SQLITE_OK ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   531
    *ppStmt = (sqlite3_stmt*)sParse.pVdbe;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   532
  }else if( sParse.pVdbe ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   533
    sqlite3_finalize((sqlite3_stmt*)sParse.pVdbe);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   534
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   535
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   536
  if( zErrMsg ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   537
    sqlite3Error(db, rc, "%s", zErrMsg);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   538
    sqliteFree(zErrMsg);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   539
  }else{
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   540
    sqlite3Error(db, rc, 0);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   541
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   542
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   543
  rc = sqlite3ApiExit(db, rc);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   544
  sqlite3ReleaseThreadData();
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   545
  return rc;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   546
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   547
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   548
#ifndef SQLITE_OMIT_UTF16
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   549
/*
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   550
** Compile the UTF-16 encoded SQL statement zSql into a statement handle.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   551
*/
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   552
EXPORT_C int sqlite3_prepare16(
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   553
  sqlite3 *db,              /* Database handle. */ 
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   554
  const void *zSql,         /* UTF-8 encoded SQL statement. */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   555
  int nBytes,               /* Length of zSql in bytes. */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   556
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   557
  const void **pzTail       /* OUT: End of parsed string */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   558
){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   559
  /* This function currently works by first transforming the UTF-16
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   560
  ** encoded string to UTF-8, then invoking sqlite3_prepare(). The
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   561
  ** tricky bit is figuring out the pointer to return in *pzTail.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   562
  */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   563
  char *zSql8;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   564
  const char *zTail8 = 0;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   565
  int rc = SQLITE_OK;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   566
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   567
  if( sqlite3SafetyCheck(db) ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   568
    return SQLITE_MISUSE;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   569
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   570
  zSql8 = sqlite3utf16to8(zSql, nBytes);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   571
  if( zSql8 ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   572
    rc = sqlite3_prepare(db, zSql8, -1, ppStmt, &zTail8);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   573
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   574
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   575
  if( zTail8 && pzTail ){
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   576
    /* If sqlite3_prepare returns a tail pointer, we calculate the
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   577
    ** equivalent pointer into the UTF-16 string by counting the unicode
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   578
    ** characters between zSql8 and zTail8, and then returning a pointer
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   579
    ** the same number of characters into the UTF-16 string.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   580
    */
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   581
    int chars_parsed = sqlite3utf8CharLen(zSql8, zTail8-zSql8);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   582
    *pzTail = (u8 *)zSql + sqlite3utf16ByteLen(zSql, chars_parsed);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   583
  }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   584
  sqliteFree(zSql8); 
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   585
  return sqlite3ApiExit(db, rc);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   586
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   587
#endif /* SQLITE_OMIT_UTF16 */