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/******************************************************************************
* $Id: ogrsqlitedriver.cpp 25409 2012-12-31 11:51:10Z rouault $
*
* Project: OpenGIS Simple Features Reference Implementation
* Purpose: Implements OGRSQLiteDriver class.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
*
* Contributor: Alessandro Furieri, a.furieri@lqt.it
* Portions of this module properly supporting SpatiaLite DB creation
* Developed for Faunalia ( http://www.faunalia.it) with funding from
* Regione Toscana - Settore SISTEMA INFORMATIVO TERRITORIALE ED AMBIENTALE
*
******************************************************************************
* 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 25409 2012-12-31 11:51:10Z rouault $");
/************************************************************************/
/* ~OGRSQLiteDriver() */
/************************************************************************/
OGRSQLiteDriver::~OGRSQLiteDriver()
{
}
/************************************************************************/
/* GetName() */
/************************************************************************/
const char *OGRSQLiteDriver::GetName()
{
return "SQLite";
}
/************************************************************************/
/* Open() */
/************************************************************************/
OGRDataSource *OGRSQLiteDriver::Open( const char * pszFilename,
int bUpdate )
{
/* -------------------------------------------------------------------- */
/* Check VirtualShape:xxx.shp syntax */
/* -------------------------------------------------------------------- */
int nLen = (int) strlen(pszFilename);
if (EQUALN(pszFilename, "VirtualShape:", strlen( "VirtualShape:" )) &&
nLen > 4 && EQUAL(pszFilename + nLen - 4, ".SHP"))
{
OGRSQLiteDataSource *poDS;
poDS = new OGRSQLiteDataSource();
char** papszOptions = CSLAddString(NULL, "SPATIALITE=YES");
int nRet = poDS->Create( ":memory:", papszOptions );
poDS->SetName(pszFilename);
CSLDestroy(papszOptions);
if (!nRet)
{
delete poDS;
return NULL;
}
char* pszShapeFilename = CPLStrdup(pszFilename + strlen( "VirtualShape:" ));
OGRDataSource* poShapeDS = OGRSFDriverRegistrar::Open(pszShapeFilename);
if (poShapeDS == NULL)
{
CPLFree(pszShapeFilename);
delete poDS;
return NULL;
}
delete poShapeDS;
char* pszLastDot = strrchr(pszShapeFilename, '.');
if (pszLastDot)
*pszLastDot = '\0';
const char* pszTableName = CPLGetBasename(pszShapeFilename);
char* pszSQL = CPLStrdup(CPLSPrintf("CREATE VIRTUAL TABLE %s USING VirtualShape(%s, CP1252, -1)",
pszTableName, pszShapeFilename));
poDS->ExecuteSQL(pszSQL, NULL, NULL);
CPLFree(pszSQL);
CPLFree(pszShapeFilename);
return poDS;
}
/* -------------------------------------------------------------------- */
/* Verify that the target is a real file, and has an */
/* appropriate magic string at the beginning. */
/* -------------------------------------------------------------------- */
if( !EQUAL(pszFilename, ":memory:") )
{
char szHeader[16];
#ifdef HAVE_SQLITE_VFS
VSILFILE *fpDB;
fpDB = VSIFOpenL( pszFilename, "rb" );
if( fpDB == NULL )
return NULL;
if( VSIFReadL( szHeader, 1, 16, fpDB ) != 16 )
memset( szHeader, 0, 16 );
VSIFCloseL( fpDB );
#else
FILE *fpDB;
fpDB = VSIFOpen( pszFilename, "rb" );
if( fpDB == NULL )
return NULL;
if( VSIFRead( szHeader, 1, 16, fpDB ) != 16 )
memset( szHeader, 0, 16 );
VSIFClose( fpDB );
#endif
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, bUpdate ) )
{
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. */
/* -------------------------------------------------------------------- */
VSIStatBufL sStatBuf;
if( VSIStatL( pszName, &sStatBuf ) == 0 )
{
CPLError( CE_Failure, CPLE_AppDefined,
"It seems a file system object called '%s' already exists.",
pszName );
return NULL;
}
/* -------------------------------------------------------------------- */
/* Try to create datasource. */
/* -------------------------------------------------------------------- */
OGRSQLiteDataSource *poDS;
poDS = new OGRSQLiteDataSource();
if( !poDS->Create( pszName, papszOptions ) )
{
delete poDS;
return NULL;
}
else
return poDS;
}
/************************************************************************/
/* DeleteDataSource() */
/************************************************************************/
OGRErr OGRSQLiteDriver::DeleteDataSource( const char *pszName )
{
if (VSIUnlink( pszName ) == 0)
return OGRERR_NONE;
else
return OGRERR_FAILURE;
}
/************************************************************************/
/* TestCapability() */
/************************************************************************/
int OGRSQLiteDriver::TestCapability( const char * pszCap )
{
if( EQUAL(pszCap,ODrCCreateDataSource) )
return TRUE;
else if( EQUAL(pszCap,ODrCDeleteDataSource) )
return TRUE;
else
return FALSE;
}
/************************************************************************/
/* RegisterOGRSQLite() */
/************************************************************************/
void RegisterOGRSQLite()
{
if (! GDAL_CHECK_VERSION("SQLite driver"))
return;
OGRSFDriverRegistrar::GetRegistrar()->RegisterDriver( new OGRSQLiteDriver );
}
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