GMLFeature *NASReader::NextFeature()
{
GMLFeature *poReturn = NULL;
try
{
if( !m_bReadStarted )
{
if( m_poSAXReader == NULL )
SetupParser();
if( !m_poSAXReader->parseFirst( m_pszFilename, m_oToFill ) )
return NULL;
m_bReadStarted = TRUE;
}
while( m_poCompleteFeature == NULL
&& m_poSAXReader->parseNext( m_oToFill ) ) {}
poReturn = m_poCompleteFeature;
m_poCompleteFeature = NULL;
}
catch (const XMLException& toCatch)
{
CPLDebug( "GML",
"Error during NextFeature()! Message:\n%s",
tr_strdup( toCatch.getMessage() ) );
}
return poReturn;
}
GMLFeature *GMLReader::NextFeature()
{
if (!m_bReadStarted)
{
if (oParser == NULL)
SetupParser();
if (fpGML == NULL)
fpGML = VSIFOpenL(m_pszFilename, "rt");
m_bReadStarted = TRUE;
}
if (fpGML == NULL || m_bStopParsing)
return NULL;
if (nFeatureTabIndex < nFeatureTabLength)
{
return ppoFeatureTab[nFeatureTabIndex++];
}
if (VSIFEofL(fpGML))
return NULL;
char aBuf[BUFSIZ];
CPLFree(ppoFeatureTab);
ppoFeatureTab = NULL;
nFeatureTabLength = 0;
nFeatureTabIndex = 0;
int nDone;
do
{
m_poGMLHandler->ResetDataHandlerCounter();
unsigned int nLen =
(unsigned int)VSIFReadL( aBuf, 1, sizeof(aBuf), fpGML );
nDone = VSIFEofL(fpGML);
if (XML_Parse(oParser, aBuf, nLen, nDone) == XML_STATUS_ERROR)
{
CPLError(CE_Failure, CPLE_AppDefined,
"XML parsing of GML file failed : %s "
"at line %d, column %d",
XML_ErrorString(XML_GetErrorCode(oParser)),
(int)XML_GetCurrentLineNumber(oParser),
(int)XML_GetCurrentColumnNumber(oParser));
m_bStopParsing = TRUE;
}
if (!m_bStopParsing)
m_bStopParsing = m_poGMLHandler->HasStoppedParsing();
} while (!nDone && !m_bStopParsing && nFeatureTabLength == 0);
return (nFeatureTabLength) ? ppoFeatureTab[nFeatureTabIndex++] : NULL;
}
GMLFeature *GMLReader::NextFeature()
{
GMLFeature *poReturn = NULL;
try
{
if( !m_bReadStarted )
{
if( m_poSAXReader == NULL )
SetupParser();
if( !m_poSAXReader->parseFirst( m_pszFilename, m_oToFill ) )
return NULL;
m_bReadStarted = TRUE;
}
while( m_poCompleteFeature == NULL
&& !m_bStopParsing
&& m_poSAXReader->parseNext( m_oToFill ) ) {}
poReturn = m_poCompleteFeature;
m_poCompleteFeature = NULL;
}
catch (const XMLException& toCatch)
{
char *pszErrorMessage = tr_strdup( toCatch.getMessage() );
CPLDebug( "GML",
"Error during NextFeature()! Message:\n%s",
pszErrorMessage );
CPLFree(pszErrorMessage);
m_bStopParsing = TRUE;
}
catch (const SAXException& toCatch)
{
char *pszErrorMessage = tr_strdup( toCatch.getMessage() );
CPLError(CE_Failure, CPLE_AppDefined, "%s", pszErrorMessage);
CPLFree(pszErrorMessage);
m_bStopParsing = TRUE;
}
return poReturn;
}
int GMLReader::PrescanForSchema( int bGetExtents )
{
GMLFeature *poFeature;
if( m_pszFilename == NULL )
return FALSE;
SetClassListLocked( FALSE );
ClearClasses();
if( !SetupParser() )
return FALSE;
while( (poFeature = NextFeature()) != NULL )
{
GMLFeatureClass *poClass = poFeature->GetClass();
if( poClass->GetFeatureCount() == -1 )
poClass->SetFeatureCount( 1 );
else
poClass->SetFeatureCount( poClass->GetFeatureCount() + 1 );
#ifdef SUPPORT_GEOMETRY
if( bGetExtents )
{
OGRGeometry *poGeometry = NULL;
if( poFeature->GetGeometry() != NULL
&& strlen(poFeature->GetGeometry()) != 0 )
{
poGeometry = OGRGeometryFactory::createFromGML(
poFeature->GetGeometry() );
}
if( poGeometry != NULL )
{
double dfXMin, dfXMax, dfYMin, dfYMax;
OGREnvelope sEnvelope;
poGeometry->getEnvelope( &sEnvelope );
delete poGeometry;
if( poClass->GetExtents(&dfXMin, &dfXMax, &dfYMin, &dfYMax) )
{
dfXMin = MIN(dfXMin,sEnvelope.MinX);
dfXMax = MAX(dfXMax,sEnvelope.MaxX);
dfYMin = MIN(dfYMin,sEnvelope.MinY);
dfYMax = MAX(dfYMax,sEnvelope.MaxY);
}
else
{
dfXMin = sEnvelope.MinX;
dfXMax = sEnvelope.MaxX;
dfYMin = sEnvelope.MinY;
dfYMax = sEnvelope.MaxY;
}
poClass->SetExtents( dfXMin, dfXMax, dfYMin, dfYMax );
}
#endif /* def SUPPORT_GEOMETRY */
}
delete poFeature;
}
CleanupParser();
return GetClassCount() > 0;
}
void CInstrumentEditorFDSEnvelope::UpdateSequenceString(bool Changed) // // //
{
SetupParser(); // // //
SetDlgItemText(IDC_SEQUENCE_STRING, m_pParser->PrintSequence().c_str()); // // //
}
void CInstrumentEditorFDSEnvelope::LoadSequence()
{
m_pSequence = m_pInstrument->GetSequence(m_iSelectedSetting); // // //
m_pSequenceEditor->SelectSequence(m_pSequence, m_iSelectedSetting, INST_FDS);
SetupParser(); // // //
}
int NASReader::PrescanForSchema( int bGetExtents )
{
GMLFeature *poFeature;
if( m_pszFilename == NULL )
return FALSE;
SetClassListLocked( FALSE );
ClearClasses();
if( !SetupParser() )
return FALSE;
while( (poFeature = NextFeature()) != NULL )
{
GMLFeatureClass *poClass = poFeature->GetClass();
if( poClass->GetFeatureCount() == -1 )
poClass->SetFeatureCount( 1 );
else
poClass->SetFeatureCount( poClass->GetFeatureCount() + 1 );
#ifdef SUPPORT_GEOMETRY
if( bGetExtents )
{
OGRGeometry *poGeometry = NULL;
if( poFeature->GetGeometry() != NULL
&& strlen(poFeature->GetGeometry()) != 0 )
{
poGeometry = (OGRGeometry *) OGR_G_CreateFromGML(
poFeature->GetGeometry() );
}
if( poGeometry != NULL )
{
double dfXMin, dfXMax, dfYMin, dfYMax;
OGREnvelope sEnvelope;
OGRwkbGeometryType eGType = (OGRwkbGeometryType)
poClass->GetGeometryType();
// Merge geometry type into layer.
if( poClass->GetFeatureCount() == 1 && eGType == wkbUnknown )
eGType = wkbNone;
poClass->SetGeometryType(
(int) OGRMergeGeometryTypes(
eGType, poGeometry->getGeometryType() ) );
// merge extents.
poGeometry->getEnvelope( &sEnvelope );
delete poGeometry;
if( poClass->GetExtents(&dfXMin, &dfXMax, &dfYMin, &dfYMax) )
{
dfXMin = MIN(dfXMin,sEnvelope.MinX);
dfXMax = MAX(dfXMax,sEnvelope.MaxX);
dfYMin = MIN(dfYMin,sEnvelope.MinY);
dfYMax = MAX(dfYMax,sEnvelope.MaxY);
}
else
{
dfXMin = sEnvelope.MinX;
dfXMax = sEnvelope.MaxX;
dfYMin = sEnvelope.MinY;
dfYMax = sEnvelope.MaxY;
}
poClass->SetExtents( dfXMin, dfXMax, dfYMin, dfYMax );
}
else
{
if( poClass->GetGeometryType() == (int) wkbUnknown
&& poClass->GetFeatureCount() == 1 )
poClass->SetGeometryType( wkbNone );
}
#endif /* def SUPPORT_GEOMETRY */
}
delete poFeature;
}
CleanupParser();
return GetClassCount() > 0;
}
int NASReader::PrescanForSchema( int bGetExtents )
{
GMLFeature *poFeature;
if( m_pszFilename == NULL )
return FALSE;
SetClassListLocked( FALSE );
ClearClasses();
if( !SetupParser() )
return FALSE;
std::string osWork;
while( (poFeature = NextFeature()) != NULL )
{
GMLFeatureClass *poClass = poFeature->GetClass();
if( poClass->GetFeatureCount() == -1 )
poClass->SetFeatureCount( 1 );
else
poClass->SetFeatureCount( poClass->GetFeatureCount() + 1 );
#ifdef SUPPORT_GEOMETRY
if( bGetExtents )
{
OGRGeometry *poGeometry = NULL;
const CPLXMLNode* const * papsGeometry = poFeature->GetGeometryList();
if( papsGeometry[0] != NULL )
{
poGeometry = (OGRGeometry*) OGR_G_CreateFromGMLTree(papsGeometry[0]);
}
if( poGeometry != NULL )
{
double dfXMin, dfXMax, dfYMin, dfYMax;
OGREnvelope sEnvelope;
OGRwkbGeometryType eGType = (OGRwkbGeometryType)
poClass->GetGeometryType();
// Merge SRSName into layer.
const char* pszSRSName = GML_ExtractSrsNameFromGeometry(papsGeometry, osWork, FALSE);
// if (pszSRSName != NULL)
// m_bCanUseGlobalSRSName = FALSE;
poClass->MergeSRSName(pszSRSName);
// Merge geometry type into layer.
if( poClass->GetFeatureCount() == 1 && eGType == wkbUnknown )
eGType = wkbNone;
poClass->SetGeometryType(
(int) OGRMergeGeometryTypes(
eGType, poGeometry->getGeometryType() ) );
// merge extents.
poGeometry->getEnvelope( &sEnvelope );
delete poGeometry;
if( poClass->GetExtents(&dfXMin, &dfXMax, &dfYMin, &dfYMax) )
{
dfXMin = MIN(dfXMin,sEnvelope.MinX);
dfXMax = MAX(dfXMax,sEnvelope.MaxX);
dfYMin = MIN(dfYMin,sEnvelope.MinY);
dfYMax = MAX(dfYMax,sEnvelope.MaxY);
}
else
{
dfXMin = sEnvelope.MinX;
dfXMax = sEnvelope.MaxX;
dfYMin = sEnvelope.MinY;
dfYMax = sEnvelope.MaxY;
}
poClass->SetExtents( dfXMin, dfXMax, dfYMin, dfYMax );
}
else
{
if( poClass->GetGeometryType() == (int) wkbUnknown
&& poClass->GetFeatureCount() == 1 )
poClass->SetGeometryType( wkbNone );
}
#endif /* def SUPPORT_GEOMETRY */
}
delete poFeature;
}
CleanupParser();
return GetClassCount() > 0;
}
