VSIVirtualHandle* VSITarFilesystemHandler::Open( const char *pszFilename,
const char *pszAccess)
{
char* tarFilename;
CPLString osTarInFileName;
if (strchr(pszAccess, 'w') != NULL ||
strchr(pszAccess, '+') != NULL)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Only read-only mode is supported for /vsitar");
return NULL;
}
tarFilename = SplitFilename(pszFilename, osTarInFileName, TRUE);
if (tarFilename == NULL)
return NULL;
VSIArchiveReader* poReader = OpenArchiveFile(tarFilename, osTarInFileName);
if (poReader == NULL)
{
CPLFree(tarFilename);
return NULL;
}
CPLString osSubFileName("/vsisubfile/");
VSITarEntryFileOffset* pOffset = (VSITarEntryFileOffset*) poReader->GetFileOffset();
osSubFileName += CPLString().Printf(CPL_FRMT_GUIB, pOffset->nOffset);
osSubFileName += "_";
osSubFileName += CPLString().Printf(CPL_FRMT_GUIB, poReader->GetFileSize());
osSubFileName += ",";
delete pOffset;
if (VSIIsTGZ(tarFilename))
{
osSubFileName += "/vsigzip/";
osSubFileName += tarFilename;
}
else
osSubFileName += tarFilename;
delete(poReader);
CPLFree(tarFilename);
tarFilename = NULL;
return (VSIVirtualHandle* )VSIFOpenL(osSubFileName, "rb");
}
