GDALPamDataset::~GDALPamDataset()
{
if( nPamFlags & GPF_DIRTY )
{
CPLDebug( "GDALPamDataset", "In destructor with dirty metadata." );
FlushCache();
}
PamClear();
}
GDALPamRasterBand::~GDALPamRasterBand()
{
PamClear();
}
CPLErr GDALPamDataset::TryLoadXML()
{
CPLXMLNode *psTree = NULL;
PamInitialize();
/* -------------------------------------------------------------------- */
/* Clear dirty flag. Generally when we get to this point is */
/* from a call at the end of the Open() method, and some calls */
/* may have already marked the PAM info as dirty (for instance */
/* setting metadata), but really everything to this point is */
/* reproducable, and so the PAM info shouldn't really be */
/* thought of as dirty. */
/* -------------------------------------------------------------------- */
nPamFlags &= ~GPF_DIRTY;
/* -------------------------------------------------------------------- */
/* Try reading the file. */
/* -------------------------------------------------------------------- */
if( !BuildPamFilename() )
return CE_None;
VSIStatBufL sStatBuf;
if( VSIStatL( psPam->pszPamFilename, &sStatBuf ) == 0
&& VSI_ISREG( sStatBuf.st_mode ) )
{
CPLErrorReset();
CPLPushErrorHandler( CPLQuietErrorHandler );
psTree = CPLParseXMLFile( psPam->pszPamFilename );
CPLPopErrorHandler();
}
/* -------------------------------------------------------------------- */
/* If we are looking for a subdataset, search for it's subtree */
/* now. */
/* -------------------------------------------------------------------- */
if( psTree && psPam->osSubdatasetName.size() )
{
CPLXMLNode *psSubTree;
for( psSubTree = psTree->psChild;
psSubTree != NULL;
psSubTree = psSubTree->psNext )
{
if( psSubTree->eType != CXT_Element
|| !EQUAL(psSubTree->pszValue,"Subdataset") )
continue;
if( !EQUAL(CPLGetXMLValue( psSubTree, "name", "" ),
psPam->osSubdatasetName) )
continue;
psSubTree = CPLGetXMLNode( psSubTree, "PAMDataset" );
break;
}
if( psSubTree != NULL )
psSubTree = CPLCloneXMLTree( psSubTree );
CPLDestroyXMLNode( psTree );
psTree = psSubTree;
}
/* -------------------------------------------------------------------- */
/* If we fail, try .aux. */
/* -------------------------------------------------------------------- */
if( psTree == NULL )
return TryLoadAux();
/* -------------------------------------------------------------------- */
/* Initialize ourselves from this XML tree. */
/* -------------------------------------------------------------------- */
CPLErr eErr;
CPLString osVRTPath(CPLGetPath(psPam->pszPamFilename));
eErr = XMLInit( psTree, osVRTPath );
CPLDestroyXMLNode( psTree );
if( eErr != CE_None )
PamClear();
return eErr;
}
