?? ogrsqlitedriver.cpp
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/****************************************************************************** * $Id: ogrsqlitedriver.cpp 10646 2007-01-18 02:38:10Z warmerdam $ * * Project: OpenGIS Simple Features Reference Implementation * Purpose: Implements OGRSQLiteDriver class. * Author: Frank Warmerdam, warmerdam@pobox.com * ****************************************************************************** * Copyright (c) 2004, Frank Warmerdam <warmerdam@pobox.com> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. ****************************************************************************/#include "ogr_sqlite.h"#include "cpl_conv.h"CPL_CVSID("$Id: ogrsqlitedriver.cpp 10646 2007-01-18 02:38:10Z warmerdam $");/************************************************************************//* ~OGRSQLiteDriver() *//************************************************************************/OGRSQLiteDriver::~OGRSQLiteDriver(){}/************************************************************************//* GetName() *//************************************************************************/const char *OGRSQLiteDriver::GetName(){ return "SQLite";}/************************************************************************//* Open() *//************************************************************************/OGRDataSource *OGRSQLiteDriver::Open( const char * pszFilename, int bUpdate ){/* -------------------------------------------------------------------- *//* Verify that the target is a real file, and has an *//* appropriate magic string at the beginning. *//* -------------------------------------------------------------------- */ FILE *fpDB; char szHeader[16]; fpDB = VSIFOpen( pszFilename, "rb" ); if( fpDB == NULL ) return NULL; if( VSIFRead( szHeader, 1, 16, fpDB ) != 16 ) memset( szHeader, 0, 16 ); VSIFClose( fpDB ); if( strncmp( szHeader, "SQLite format 3", 15 ) != 0 ) return NULL;/* -------------------------------------------------------------------- *//* We think this is really an SQLite database, go ahead and try *//* and open it. *//* -------------------------------------------------------------------- */ OGRSQLiteDataSource *poDS; poDS = new OGRSQLiteDataSource(); if( !poDS->Open( pszFilename ) ) { delete poDS; return NULL; } else return poDS;}/************************************************************************//* CreateDataSource() *//************************************************************************/OGRDataSource *OGRSQLiteDriver::CreateDataSource( const char * pszName, char ** /* papszOptions */ ){/* -------------------------------------------------------------------- *//* First, ensure there isn't any such file yet. *//* -------------------------------------------------------------------- */ VSIStatBuf sStatBuf; if( VSIStat( pszName, &sStatBuf ) == 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "It seems a file system object called '%s' already exists.", pszName ); return NULL; }/* -------------------------------------------------------------------- *//* Create the datasource. *//* -------------------------------------------------------------------- */ OGRSQLiteDataSource *poDS; poDS = new OGRSQLiteDataSource(); if( !poDS->Open( pszName ) ) { delete poDS; return NULL; } return poDS;}/************************************************************************//* TestCapability() *//************************************************************************/int OGRSQLiteDriver::TestCapability( const char * pszCap ){ if( EQUAL(pszCap,ODrCCreateDataSource) ) return TRUE; else return FALSE;}/************************************************************************//* RegisterOGRSQLite() *//************************************************************************/void RegisterOGRSQLite(){ OGRSFDriverRegistrar::GetRegistrar()->RegisterDriver( new OGRSQLiteDriver );}
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