int OGRGPSBabelDataSource::Open( const char * pszDatasourceName,
const char* pszGPSBabelDriverNameIn,
char** papszOpenOptionsIn )
{
if (!STARTS_WITH_CI(pszDatasourceName, "GPSBABEL:"))
{
CPLAssert(pszGPSBabelDriverNameIn);
pszGPSBabelDriverName = CPLStrdup(pszGPSBabelDriverNameIn);
pszFilename = CPLStrdup(pszDatasourceName);
}
else
{
if( CSLFetchNameValue(papszOpenOptionsIn, "FILENAME") )
pszFilename = CPLStrdup(CSLFetchNameValue(papszOpenOptionsIn,
"FILENAME"));
if( CSLFetchNameValue(papszOpenOptionsIn, "GPSBABEL_DRIVER") )
{
if( pszFilename == NULL )
{
CPLError(CE_Failure, CPLE_AppDefined, "Missing FILENAME");
return FALSE;
}
pszGPSBabelDriverName
= CPLStrdup(CSLFetchNameValue(papszOpenOptionsIn, "DRIVER"));
/* A bit of validation to avoid command line injection */
if (!IsValidDriverName(pszGPSBabelDriverName))
return FALSE;
}
}
pszName = CPLStrdup( pszDatasourceName );
bool bExplicitFeatures = false;
bool bWaypoints = true;
bool bTracks = true;
bool bRoutes = true;
if (pszGPSBabelDriverName == NULL)
{
const char* pszSep = strchr(pszDatasourceName + 9, ':');
if (pszSep == NULL)
{
CPLError( CE_Failure, CPLE_AppDefined,
"Wrong syntax. Expected GPSBabel:driver_name:file_name");
return FALSE;
}
pszGPSBabelDriverName = CPLStrdup(pszDatasourceName + 9);
*(strchr(pszGPSBabelDriverName, ':')) = '\0';
/* A bit of validation to avoid command line injection */
if (!IsValidDriverName(pszGPSBabelDriverName))
return FALSE;
/* Parse optional features= option */
if (STARTS_WITH_CI(pszSep+1, "features="))
{
const char* pszNextSep = strchr(pszSep+1, ':');
if (pszNextSep == NULL)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Wrong syntax. Expected "
"GPSBabel:driver_name[,options]*:["
"features=waypoints,tracks,routes:]file_name");
return FALSE;
}
char* pszFeatures = CPLStrdup(pszSep+1+9);
*strchr(pszFeatures, ':') = 0;
char** papszTokens = CSLTokenizeString(pszFeatures);
char** papszIter = papszTokens;
bool bErr = false;
bExplicitFeatures = true;
bWaypoints = false;
bTracks = false;
bRoutes = false;
while(papszIter && *papszIter)
{
if (EQUAL(*papszIter, "waypoints"))
bWaypoints = true;
else if (EQUAL(*papszIter, "tracks"))
bTracks = true;
else if (EQUAL(*papszIter, "routes"))
bRoutes = true;
else
{
CPLError( CE_Failure, CPLE_AppDefined,
"Wrong value for 'features' options");
bErr = true;
}
papszIter++;
}
CSLDestroy(papszTokens);
CPLFree(pszFeatures);
if (bErr)
return FALSE;
pszSep = pszNextSep;
}
if( pszFilename == NULL )
pszFilename = CPLStrdup(pszSep+1);
}
const char* pszOptionUseTempFile = CPLGetConfigOption("USE_TEMPFILE", NULL);
if (pszOptionUseTempFile && CPLTestBool(pszOptionUseTempFile))
osTmpFileName = CPLGenerateTempFilename(NULL);
else
osTmpFileName.Printf("/vsimem/ogrgpsbabeldatasource_%p", this);
bool bRet = false;
if (IsSpecialFile(pszFilename))
{
/* Special file : don't try to open it */
char** argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes,
bTracks, pszGPSBabelDriverName, pszFilename);
VSILFILE* tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb");
bRet = (CPLSpawn(argv, NULL, tmpfp, TRUE) == 0);
VSIFCloseL(tmpfp);
tmpfp = NULL;
CSLDestroy(argv);
argv = NULL;
}
else
{
VSILFILE* fp = VSIFOpenL(pszFilename, "rb");
if (fp == NULL)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot open file %s", pszFilename);
return FALSE;
}
char** argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes,
bTracks, pszGPSBabelDriverName, "-");
VSILFILE* tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb");
CPLPushErrorHandler(CPLQuietErrorHandler);
bRet = (CPLSpawn(argv, fp, tmpfp, TRUE) == 0);
CPLPopErrorHandler();
CSLDestroy(argv);
argv = NULL;
CPLErr nLastErrorType = CPLGetLastErrorType();
CPLErrorNum nLastErrorNo = CPLGetLastErrorNo();
CPLString osLastErrorMsg = CPLGetLastErrorMsg();
VSIFCloseL(tmpfp);
tmpfp = NULL;
VSIFCloseL(fp);
fp = NULL;
if (!bRet)
{
if ( strstr(osLastErrorMsg.c_str(),
"This format cannot be used in piped commands") == NULL)
{
CPLError( nLastErrorType, nLastErrorNo, "%s",
osLastErrorMsg.c_str());
}
else
{
VSIStatBuf sStatBuf;
if (VSIStat(pszFilename, &sStatBuf) != 0)
{
CPLError( CE_Failure, CPLE_NotSupported,
"Driver %s only supports real (non virtual) "
"files",
pszGPSBabelDriverName );
return FALSE;
}
/* Try without piping in */
argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes,
bTracks, pszGPSBabelDriverName, pszFilename);
tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb");
bRet = (CPLSpawn(argv, NULL, tmpfp, TRUE) == 0);
VSIFCloseL(tmpfp);
tmpfp = NULL;
CSLDestroy(argv);
argv = NULL;
}
}
}
if (bRet)
{
poGPXDS = static_cast<GDALDataset *>(
GDALOpenEx( osTmpFileName.c_str(),
GDAL_OF_VECTOR, NULL, NULL, NULL ) );
if (poGPXDS)
{
if (bWaypoints)
{
OGRLayer* poLayer = poGPXDS->GetLayerByName("waypoints");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
}
if (bRoutes)
{
OGRLayer* poLayer = poGPXDS->GetLayerByName("routes");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
poLayer = poGPXDS->GetLayerByName("route_points");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
}
if (bTracks)
{
OGRLayer* poLayer = poGPXDS->GetLayerByName("tracks");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
poLayer = poGPXDS->GetLayerByName("track_points");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
}
}
}
return nLayers > 0;
}
int OGRGPSBabelDataSource::Open( const char * pszDatasourceName, int bUpdateIn)
{
int bExplicitFeatures = FALSE;
int bWaypoints = TRUE, bTracks = TRUE, bRoutes = TRUE;
if (bUpdateIn)
{
CPLError(CE_Failure, CPLE_NotSupported,
"OGR/GPSBabel driver does not support opening a file in update mode");
return FALSE;
}
if (!EQUALN(pszDatasourceName, "GPSBABEL:", 9))
{
VSILFILE* fp = VSIFOpenL(pszDatasourceName, "rb");
if (fp == NULL)
return FALSE;
char szHeader[1024 + 1];
memset(szHeader, 0, 1024+1);
VSIFReadL(szHeader, 1, 1024, fp);
if (memcmp(szHeader, "MsRcd", 5) == 0)
pszGPSBabelDriverName = CPLStrdup("mapsource");
else if (memcmp(szHeader, "MsRcf", 5) == 0)
pszGPSBabelDriverName = CPLStrdup("gdb");
else if (strstr(szHeader, "<osm") != NULL)
pszGPSBabelDriverName = CPLStrdup("osm");
else if (strstr(szHeader, "$GPGSA") != NULL ||
strstr(szHeader, "$GPGGA") != NULL)
pszGPSBabelDriverName = CPLStrdup("nmea");
else if (EQUALN(szHeader, "OziExplorer",11))
pszGPSBabelDriverName = CPLStrdup("ozi");
else if (strstr(szHeader, "Grid") && strstr(szHeader, "Datum") && strstr(szHeader, "Header"))
pszGPSBabelDriverName = CPLStrdup("garmin_txt");
else if (szHeader[0] == 13 && szHeader[10] == 'M' && szHeader[11] == 'S' &&
(szHeader[12] >= '0' && szHeader[12] <= '9') &&
(szHeader[13] >= '0' && szHeader[13] <= '9') &&
szHeader[12] * 10 + szHeader[13] >= 30 &&
(szHeader[14] == 1 || szHeader[14] == 2) && szHeader[15] == 0 &&
szHeader[16] == 0 && szHeader[17] == 0)
pszGPSBabelDriverName = CPLStrdup("mapsend");
else if (strstr(szHeader, "$PMGNWPL") != NULL ||
strstr(szHeader, "$PMGNRTE") != NULL)
pszGPSBabelDriverName = CPLStrdup("magellan");
VSIFCloseL(fp);
if (pszGPSBabelDriverName == NULL)
{
return FALSE;
}
pszFilename = CPLStrdup(pszDatasourceName);
}
pszName = CPLStrdup( pszDatasourceName );
if (pszGPSBabelDriverName == NULL)
{
const char* pszSep = strchr(pszDatasourceName + 9, ':');
if (pszSep == NULL)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Wrong syntax. Expected GPSBabel:driver_name:file_name");
return FALSE;
}
pszGPSBabelDriverName = CPLStrdup(pszDatasourceName + 9);
*(strchr(pszGPSBabelDriverName, ':')) = '\0';
/* A bit of validation to avoid command line injection */
if (!IsValidDriverName(pszGPSBabelDriverName))
return FALSE;
/* Parse optionnal features= option */
if (EQUALN(pszSep+1, "features=", 9))
{
const char* pszNextSep = strchr(pszSep+1, ':');
if (pszNextSep == NULL)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Wrong syntax. Expected GPSBabel:driver_name[,options]*:[features=waypoints,tracks,routes:]file_name");
return FALSE;
}
char* pszFeatures = CPLStrdup(pszSep+1+9);
*strchr(pszFeatures, ':') = 0;
char** papszTokens = CSLTokenizeString(pszFeatures);
char** papszIter = papszTokens;
int bErr = FALSE;
bExplicitFeatures = TRUE;
bWaypoints = bTracks = bRoutes = FALSE;
while(papszIter && *papszIter)
{
if (EQUAL(*papszIter, "waypoints"))
bWaypoints = TRUE;
else if (EQUAL(*papszIter, "tracks"))
bTracks = TRUE;
else if (EQUAL(*papszIter, "routes"))
bRoutes = TRUE;
else
{
CPLError(CE_Failure, CPLE_AppDefined, "Wrong value for 'features' options");
bErr = TRUE;
}
papszIter ++;
}
CSLDestroy(papszTokens);
CPLFree(pszFeatures);
if (bErr)
return FALSE;
pszSep = pszNextSep;
}
pszFilename = CPLStrdup(pszSep+1);
}
const char* pszOptionUseTempFile = CPLGetConfigOption("USE_TEMPFILE", NULL);
if (pszOptionUseTempFile && CSLTestBoolean(pszOptionUseTempFile))
osTmpFileName = CPLGenerateTempFilename(NULL);
else
osTmpFileName.Printf("/vsimem/ogrgpsbabeldatasource_%p", this);
int bRet = FALSE;
if (IsSpecialFile(pszFilename))
{
/* Special file : don't try to open it */
char** argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes,
bTracks, pszGPSBabelDriverName, pszFilename);
VSILFILE* tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb");
bRet = (CPLSpawn(argv, NULL, tmpfp, TRUE) == 0);
VSIFCloseL(tmpfp);
tmpfp = NULL;
CSLDestroy(argv);
argv = NULL;
}
else
{
VSILFILE* fp = VSIFOpenL(pszFilename, "rb");
if (fp == NULL)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot open file %s", pszFilename);
return FALSE;
}
char** argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes,
bTracks, pszGPSBabelDriverName, "-");
VSILFILE* tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb");
CPLPushErrorHandler(CPLQuietErrorHandler);
bRet = (CPLSpawn(argv, fp, tmpfp, TRUE) == 0);
CPLPopErrorHandler();
CSLDestroy(argv);
argv = NULL;
CPLErr nLastErrorType = CPLGetLastErrorType();
int nLastErrorNo = CPLGetLastErrorNo();
CPLString osLastErrorMsg = CPLGetLastErrorMsg();
VSIFCloseL(tmpfp);
tmpfp = NULL;
VSIFCloseL(fp);
fp = NULL;
if (!bRet)
{
if (strstr(osLastErrorMsg.c_str(), "This format cannot be used in piped commands") == NULL)
{
CPLError(nLastErrorType, nLastErrorNo, "%s", osLastErrorMsg.c_str());
}
else
{
VSIStatBuf sStatBuf;
if (VSIStat(pszFilename, &sStatBuf) != 0)
{
CPLError(CE_Failure, CPLE_NotSupported,
"Driver %s only supports real (non virtual) files", pszGPSBabelDriverName);
return FALSE;
}
/* Try without piping in */
argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes,
bTracks, pszGPSBabelDriverName, pszFilename);
tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb");
bRet = (CPLSpawn(argv, NULL, tmpfp, TRUE) == 0);
VSIFCloseL(tmpfp);
tmpfp = NULL;
CSLDestroy(argv);
argv = NULL;
}
}
}
if (bRet)
{
poGPXDS = OGRSFDriverRegistrar::Open(osTmpFileName.c_str());
if (poGPXDS)
{
OGRLayer* poLayer;
if (bWaypoints)
{
poLayer = poGPXDS->GetLayerByName("waypoints");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
}
if (bRoutes)
{
poLayer = poGPXDS->GetLayerByName("routes");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
poLayer = poGPXDS->GetLayerByName("route_points");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
}
if (bTracks)
{
poLayer = poGPXDS->GetLayerByName("tracks");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
poLayer = poGPXDS->GetLayerByName("track_points");
if (poLayer != NULL && poLayer->GetFeatureCount() != 0)
apoLayers[nLayers++] = poLayer;
}
}
}
return nLayers > 0;
}
