OGRDataSource *OGRWalkDriver::Open( const char * pszFilename, int bUpdate )
{
if( EQUALN(pszFilename, "PGEO:", strlen("PGEO:")) )
return NULL;
if( EQUALN(pszFilename, "GEOMEDIA:", strlen("GEOMEDIA:")) )
return NULL;
if( !EQUALN(pszFilename,"WALK:", strlen("WALK:"))
&& !EQUAL(CPLGetExtension(pszFilename), "MDB") )
return NULL;
#ifndef WIN32
// Try to register MDB Tools driver
//
// ODBCINST.INI NOTE:
// This operation requires write access to odbcinst.ini file
// located in directory pointed by ODBCINISYS variable.
// Usually, it points to /etc, so non-root users can overwrite this
// setting ODBCINISYS with location they have write access to, e.g.:
// $ export ODBCINISYS=$HOME/etc
// $ touch $ODBCINISYS/odbcinst.ini
//
// See: http://www.unixodbc.org/internals.html
//
if ( !InstallMdbDriver() )
{
CPLError( CE_Warning, CPLE_AppDefined,
"Unable to install MDB driver for ODBC, MDB access may not supported.\n" );
}
else
CPLDebug( "Walk", "MDB Tools driver installed successfully!");
#endif /* ndef WIN32 */
OGRWalkDataSource *poDS = new OGRWalkDataSource();
if( !poDS->Open( pszFilename, bUpdate ) )
{
delete poDS;
return NULL;
}
else
return poDS;
}
OGRDataSource *OGRGeomediaDriver::Open( const char * pszFilename,
int bUpdate )
{
OGRGeomediaDataSource *poDS;
if( EQUALN(pszFilename, "WALK:", strlen("WALK:")) )
return NULL;
if( EQUALN(pszFilename, "PGEO:", strlen("PGEO:")) )
return NULL;
if( !EQUALN(pszFilename,"GEOMEDIA:",9)
&& !EQUAL(CPLGetExtension(pszFilename),"mdb") )
return NULL;
/* Disabling the attempt to guess if a MDB file is a Geomedia database */
/* or not. See similar fix in PGeo driver for rationale. */
#if 0
if( !EQUALN(pszFilename,"GEOMEDIA:",9) &&
EQUAL(CPLGetExtension(pszFilename),"mdb") )
{
VSILFILE* fp = VSIFOpenL(pszFilename, "rb");
if (!fp)
return NULL;
GByte* pabyHeader = (GByte*) CPLMalloc(100000);
VSIFReadL(pabyHeader, 100000, 1, fp);
VSIFCloseL(fp);
/* Look for GAliasTable table */
const GByte pabyNeedle[] = { 'G', 0, 'A', 0, 'l', 0, 'i', 0, 'a', 0, 's', 0, 'T', 0, 'a', 0, 'b', 0, 'l', 0, 'e'};
int bFound = FALSE;
for(int i=0;i<100000 - (int)sizeof(pabyNeedle);i++)
{
if (memcmp(pabyHeader + i, pabyNeedle, sizeof(pabyNeedle)) == 0)
{
bFound = TRUE;
break;
}
}
CPLFree(pabyHeader);
if (!bFound)
return NULL;
}
#endif
#ifndef WIN32
// Try to register MDB Tools driver
//
// ODBCINST.INI NOTE:
// This operation requires write access to odbcinst.ini file
// located in directory pointed by ODBCINISYS variable.
// Usually, it points to /etc, so non-root users can overwrite this
// setting ODBCINISYS with location they have write access to, e.g.:
// $ export ODBCINISYS=$HOME/etc
// $ touch $ODBCINISYS/odbcinst.ini
//
// See: http://www.unixodbc.org/internals.html
//
if ( !InstallMdbDriver() )
{
CPLError( CE_Warning, CPLE_AppDefined,
"Unable to install MDB driver for ODBC, MDB access may not supported.\n" );
}
else
CPLDebug( "Geomedia", "MDB Tools driver installed successfully!");
#endif /* ndef WIN32 */
// Open data source
poDS = new OGRGeomediaDataSource();
if( !poDS->Open( pszFilename, bUpdate, TRUE ) )
{
delete poDS;
return NULL;
}
else
return poDS;
}
OGRDataSource *OGRPGeoDriver::Open( const char * pszFilename,
int bUpdate )
{
if( STARTS_WITH_CI(pszFilename, "WALK:") )
return nullptr;
if( STARTS_WITH_CI(pszFilename, "GEOMEDIA:") )
return nullptr;
if( !STARTS_WITH_CI(pszFilename, "PGEO:")
&& !EQUAL(CPLGetExtension(pszFilename),"mdb") )
return nullptr;
// Disabling the attempt to guess if a MDB file is a PGeo database
// or not. The mention to GDB_GeomColumns might be quite far in
// the/ file, which can cause misdetection. See
// http://trac.osgeo.org/gdal/ticket/4498 This was initially meant
// to know if a MDB should be opened by the PGeo or the Geomedia
// driver.
#if 0
if( !STARTS_WITH_CI(pszFilename, "PGEO:") &&
EQUAL(CPLGetExtension(pszFilename),"mdb") )
{
VSILFILE* fp = VSIFOpenL(pszFilename, "rb");
if (!fp)
return NULL;
GByte* pabyHeader = (GByte*) CPLMalloc(100000);
VSIFReadL(pabyHeader, 100000, 1, fp);
VSIFCloseL(fp);
/* Look for GDB_GeomColumns table */
const GByte pabyNeedle[] = {
'G', 0, 'D', 0, 'B', 0, '_', 0, 'G', 0, 'e', 0, 'o', 0, 'm', 0,
'C', 0, 'o', 0, 'l', 0, 'u', 0, 'm', 0, 'n', 0, 's' };
int bFound = FALSE;
for(int i=0;i<100000 - (int)sizeof(pabyNeedle);i++)
{
if (memcmp(pabyHeader + i, pabyNeedle, sizeof(pabyNeedle)) == 0)
{
bFound = TRUE;
break;
}
}
CPLFree(pabyHeader);
if (!bFound)
return NULL;
}
#endif
#ifndef WIN32
// Try to register MDB Tools driver
//
// ODBCINST.INI NOTE:
// This operation requires write access to odbcinst.ini file
// located in directory pointed by ODBCINISYS variable.
// Usually, it points to /etc, so non-root users can overwrite this
// setting ODBCINISYS with location they have write access to, e.g.:
// $ export ODBCINISYS=$HOME/etc
// $ touch $ODBCINISYS/odbcinst.ini
//
// See: http://www.unixodbc.org/internals.html
//
if ( !InstallMdbDriver() )
{
CPLError( CE_Warning, CPLE_AppDefined,
"Unable to install MDB driver for ODBC, MDB access may not supported.\n" );
}
else
CPLDebug( "PGeo", "MDB Tools driver installed successfully!");
#endif /* ndef WIN32 */
// Open data source
OGRPGeoDataSource *poDS = new OGRPGeoDataSource();
if( !poDS->Open( pszFilename, bUpdate, TRUE ) )
{
delete poDS;
return nullptr;
}
else
return poDS;
}
