static GDALDataset *OGRGTMDriverOpen( GDALOpenInfo* poOpenInfo )
{
if( poOpenInfo->eAccess == GA_Update ||
poOpenInfo->fpL == NULL ||
poOpenInfo->nHeaderBytes < 13)
return NULL;
/* -------------------------------------------------------------------- */
/* If it looks like a GZip header, this may be a .gtz file, so */
/* try opening with the /vsigzip/ prefix */
/* -------------------------------------------------------------------- */
if (poOpenInfo->pabyHeader[0] == 0x1f && ((unsigned char*)poOpenInfo->pabyHeader)[1] == 0x8b &&
strncmp(poOpenInfo->pszFilename, "/vsigzip/", strlen("/vsigzip/")) != 0)
{
/* ok */
}
else
{
short version = CPL_LSBINT16PTR(poOpenInfo->pabyHeader);
if (version != 211 ||
strncmp((const char*)poOpenInfo->pabyHeader + 2, "TrackMaker", strlen("TrackMaker")) != 0 )
{
return NULL;
}
}
OGRGTMDataSource *poDS = new OGRGTMDataSource();
if( !poDS->Open( poOpenInfo->pszFilename, FALSE ) )
{
delete poDS;
poDS = NULL;
}
return poDS;
}
OGRDataSource *OGRGTMDriver::Open( const char * pszName, int bUpdate )
{
if (bUpdate)
{
return NULL;
}
OGRGTMDataSource *poDS = new OGRGTMDataSource();
if( !poDS->Open( pszName, bUpdate ) )
{
delete poDS;
poDS = NULL;
}
return poDS;
}
