/
qgsgml.cpp
1505 lines (1365 loc) · 46.2 KB
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qgsgml.cpp
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/***************************************************************************
qgsgml.cpp
---------------------
begin : February 2013
copyright : (C) 2013 by Radim Blazek
email : radim dot blazek at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsgml.h"
#include "qgsauthmanager.h"
#include "qgsrectangle.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsgeometry.h"
#include "qgslogger.h"
#include "qgsmessagelog.h"
#include "qgsnetworkaccessmanager.h"
#include "qgswkbptr.h"
#include <QBuffer>
#include <QList>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QProgressDialog>
#include <QSet>
#include <QSettings>
#include <QUrl>
#include "ogr_api.h"
#include <limits>
static const char NS_SEPARATOR = '?';
static const char *GML_NAMESPACE = "http://www.opengis.net/gml";
static const char *GML32_NAMESPACE = "http://www.opengis.net/gml/3.2";
QgsGml::QgsGml(
const QString &typeName,
const QString &geometryAttribute,
const QgsFields &fields )
: QObject()
, mParser( typeName, geometryAttribute, fields )
, mTypeName( typeName )
, mFinished( false )
{
int index = mTypeName.indexOf( ':' );
if ( index != -1 && index < mTypeName.length() )
{
mTypeName = mTypeName.mid( index + 1 );
}
}
int QgsGml::getFeatures( const QString &uri, QgsWkbTypes::Type *wkbType, QgsRectangle *extent, const QString &userName, const QString &password, const QString &authcfg )
{
//start with empty extent
mExtent.setMinimal();
QNetworkRequest request( uri );
if ( !authcfg.isEmpty() )
{
if ( !QgsAuthManager::instance()->updateNetworkRequest( request, authcfg ) )
{
QgsMessageLog::logMessage(
tr( "GML Getfeature network request update failed for authcfg %1" ).arg( authcfg ),
tr( "Network" ),
QgsMessageLog::CRITICAL
);
return 1;
}
}
else if ( !userName.isNull() || !password.isNull() )
{
request.setRawHeader( "Authorization", "Basic " + QStringLiteral( "%1:%2" ).arg( userName, password ).toLatin1().toBase64() );
}
QNetworkReply *reply = QgsNetworkAccessManager::instance()->get( request );
if ( !authcfg.isEmpty() )
{
if ( !QgsAuthManager::instance()->updateNetworkReply( reply, authcfg ) )
{
reply->deleteLater();
QgsMessageLog::logMessage(
tr( "GML Getfeature network reply update failed for authcfg %1" ).arg( authcfg ),
tr( "Network" ),
QgsMessageLog::CRITICAL
);
return 1;
}
}
connect( reply, &QNetworkReply::finished, this, &QgsGml::setFinished );
connect( reply, &QNetworkReply::downloadProgress, this, &QgsGml::handleProgressEvent );
//find out if there is a QGIS main window. If yes, display a progress dialog
QProgressDialog *progressDialog = nullptr;
QWidget *mainWindow = nullptr;
QWidgetList topLevelWidgets = qApp->topLevelWidgets();
for ( QWidgetList::const_iterator it = topLevelWidgets.constBegin(); it != topLevelWidgets.constEnd(); ++it )
{
if ( ( *it )->objectName() == QLatin1String( "QgisApp" ) )
{
mainWindow = *it;
break;
}
}
if ( mainWindow )
{
progressDialog = new QProgressDialog( tr( "Loading GML data\n%1" ).arg( mTypeName ), tr( "Abort" ), 0, 0, mainWindow );
progressDialog->setWindowModality( Qt::ApplicationModal );
connect( this, &QgsGml::dataReadProgress, progressDialog, &QProgressDialog::setValue );
connect( this, &QgsGml::totalStepsUpdate, progressDialog, &QProgressDialog::setMaximum );
connect( progressDialog, &QProgressDialog::canceled, this, &QgsGml::setFinished );
progressDialog->show();
}
int atEnd = 0;
while ( !atEnd )
{
if ( mFinished )
{
atEnd = 1;
}
QByteArray readData = reply->readAll();
if ( !readData.isEmpty() )
{
QString errorMsg;
if ( !mParser.processData( readData, atEnd, errorMsg ) )
QgsMessageLog::logMessage( errorMsg, QObject::tr( "WFS" ) );
}
QCoreApplication::processEvents();
}
fillMapsFromParser();
QNetworkReply::NetworkError replyError = reply->error();
QString replyErrorString = reply->errorString();
delete reply;
delete progressDialog;
if ( replyError )
{
QgsMessageLog::logMessage(
tr( "GML Getfeature network request failed with error: %1" ).arg( replyErrorString ),
tr( "Network" ),
QgsMessageLog::CRITICAL
);
return 1;
}
*wkbType = mParser.wkbType();
if ( *wkbType != QgsWkbTypes::Unknown )
{
if ( mExtent.isEmpty() )
{
//reading of bbox from the server failed, so we calculate it less efficiently by evaluating the features
calculateExtentFromFeatures();
}
}
if ( extent )
*extent = mExtent;
return 0;
}
int QgsGml::getFeatures( const QByteArray &data, QgsWkbTypes::Type *wkbType, QgsRectangle *extent )
{
mExtent.setMinimal();
QString errorMsg;
if ( !mParser.processData( data, true /* atEnd */, errorMsg ) )
QgsMessageLog::logMessage( errorMsg, QObject::tr( "WFS" ) );
fillMapsFromParser();
*wkbType = mParser.wkbType();
if ( extent )
*extent = mExtent;
return 0;
}
void QgsGml::fillMapsFromParser()
{
QVector<QgsGmlStreamingParser::QgsGmlFeaturePtrGmlIdPair> features = mParser.getAndStealReadyFeatures();
Q_FOREACH ( const QgsGmlStreamingParser::QgsGmlFeaturePtrGmlIdPair &featPair, features )
{
QgsFeature *feat = featPair.first;
const QString &gmlId = featPair.second;
mFeatures.insert( feat->id(), feat );
if ( !gmlId.isEmpty() )
{
mIdMap.insert( feat->id(), gmlId );
}
}
}
void QgsGml::setFinished()
{
mFinished = true;
}
void QgsGml::handleProgressEvent( qint64 progress, qint64 totalSteps )
{
if ( totalSteps < 0 )
{
totalSteps = 0;
progress = 0;
}
emit totalStepsUpdate( totalSteps );
emit dataReadProgress( progress );
emit dataProgressAndSteps( progress, totalSteps );
}
void QgsGml::calculateExtentFromFeatures()
{
if ( mFeatures.size() < 1 )
{
return;
}
QgsFeature *currentFeature = nullptr;
QgsGeometry currentGeometry;
bool bboxInitialized = false; //gets true once bbox has been set to the first geometry
for ( int i = 0; i < mFeatures.size(); ++i )
{
currentFeature = mFeatures[i];
if ( !currentFeature )
{
continue;
}
currentGeometry = currentFeature->geometry();
if ( !currentGeometry.isNull() )
{
if ( !bboxInitialized )
{
mExtent = currentGeometry.boundingBox();
bboxInitialized = true;
}
else
{
mExtent.combineExtentWith( currentGeometry.boundingBox() );
}
}
}
}
QgsCoordinateReferenceSystem QgsGml::crs() const
{
QgsCoordinateReferenceSystem crs;
if ( mParser.getEPSGCode() != 0 )
{
crs = QgsCoordinateReferenceSystem::fromOgcWmsCrs( QStringLiteral( "EPSG:%1" ).arg( mParser.getEPSGCode() ) );
}
return crs;
}
QgsGmlStreamingParser::QgsGmlStreamingParser( const QString &typeName,
const QString &geometryAttribute,
const QgsFields &fields,
AxisOrientationLogic axisOrientationLogic,
bool invertAxisOrientation )
: mTypeName( typeName )
, mTypeNameBA( mTypeName.toUtf8() )
, mTypeNamePtr( mTypeNameBA.constData() )
, mTypeNameUTF8Len( strlen( mTypeNamePtr ) )
, mWkbType( QgsWkbTypes::Unknown )
, mGeometryAttribute( geometryAttribute )
, mGeometryAttributeBA( geometryAttribute.toUtf8() )
, mGeometryAttributePtr( mGeometryAttributeBA.constData() )
, mGeometryAttributeUTF8Len( strlen( mGeometryAttributePtr ) )
, mFields( fields )
, mIsException( false )
, mTruncatedResponse( false )
, mParseDepth( 0 )
, mFeatureTupleDepth( 0 )
, mCurrentFeature( nullptr )
, mFeatureCount( 0 )
, mCurrentWKB( nullptr, 0 )
, mBoundedByNullFound( false )
, mDimension( 0 )
, mCoorMode( Coordinate )
, mEpsg( 0 )
, mGMLNameSpaceURIPtr( nullptr )
, mAxisOrientationLogic( axisOrientationLogic )
, mInvertAxisOrientationRequest( invertAxisOrientation )
, mInvertAxisOrientation( invertAxisOrientation )
, mNumberReturned( -1 )
, mNumberMatched( -1 )
, mFoundUnhandledGeometryElement( false )
{
mThematicAttributes.clear();
for ( int i = 0; i < fields.size(); i++ )
{
mThematicAttributes.insert( fields.at( i ).name(), qMakePair( i, fields.at( i ) ) );
}
mEndian = QgsApplication::endian();
int index = mTypeName.indexOf( ':' );
if ( index != -1 && index < mTypeName.length() )
{
mTypeName = mTypeName.mid( index + 1 );
mTypeNameBA = mTypeName.toUtf8();
mTypeNamePtr = mTypeNameBA.constData();
mTypeNameUTF8Len = strlen( mTypeNamePtr );
}
mParser = XML_ParserCreateNS( nullptr, NS_SEPARATOR );
XML_SetUserData( mParser, this );
XML_SetElementHandler( mParser, QgsGmlStreamingParser::start, QgsGmlStreamingParser::end );
XML_SetCharacterDataHandler( mParser, QgsGmlStreamingParser::chars );
}
static QString stripNS( const QString &string )
{
int index = string.indexOf( ':' );
if ( index != -1 && index < string.length() )
{
return string.mid( index + 1 );
}
return string;
}
QgsGmlStreamingParser::QgsGmlStreamingParser( const QList<LayerProperties> &layerProperties,
const QgsFields &fields,
const QMap< QString, QPair<QString, QString> > &mapFieldNameToSrcLayerNameFieldName,
AxisOrientationLogic axisOrientationLogic,
bool invertAxisOrientation )
: mLayerProperties( layerProperties )
, mTypeNamePtr( nullptr )
, mTypeNameUTF8Len( 0 )
, mWkbType( QgsWkbTypes::Unknown )
, mGeometryAttributePtr( nullptr )
, mGeometryAttributeUTF8Len( 0 )
, mFields( fields )
, mIsException( false )
, mTruncatedResponse( false )
, mParseDepth( 0 )
, mFeatureTupleDepth( 0 )
, mCurrentFeature( nullptr )
, mFeatureCount( 0 )
, mCurrentWKB( nullptr, 0 )
, mBoundedByNullFound( false )
, mDimension( 0 )
, mCoorMode( Coordinate )
, mEpsg( 0 )
, mGMLNameSpaceURIPtr( nullptr )
, mAxisOrientationLogic( axisOrientationLogic )
, mInvertAxisOrientationRequest( invertAxisOrientation )
, mInvertAxisOrientation( invertAxisOrientation )
, mNumberReturned( -1 )
, mNumberMatched( -1 )
, mFoundUnhandledGeometryElement( false )
{
mThematicAttributes.clear();
for ( int i = 0; i < fields.size(); i++ )
{
QMap< QString, QPair<QString, QString> >::const_iterator att_it = mapFieldNameToSrcLayerNameFieldName.constFind( fields.at( i ).name() );
if ( att_it != mapFieldNameToSrcLayerNameFieldName.constEnd() )
{
if ( mLayerProperties.size() == 1 )
mThematicAttributes.insert( att_it.value().second, qMakePair( i, fields.at( i ) ) );
else
mThematicAttributes.insert( stripNS( att_it.value().first ) + "|" + att_it.value().second, qMakePair( i, fields.at( i ) ) );
}
}
bool alreadyFoundGeometry = false;
for ( int i = 0; i < mLayerProperties.size(); i++ )
{
// We only support one geometry field per feature
if ( !mLayerProperties[i].mGeometryAttribute.isEmpty() )
{
if ( alreadyFoundGeometry )
{
QgsDebugMsg( QString( "Will ignore geometry field %1 from typename %2" ).
arg( mLayerProperties[i].mGeometryAttribute, mLayerProperties[i].mName ) );
mLayerProperties[i].mGeometryAttribute.clear();
}
alreadyFoundGeometry = true;
}
mMapTypeNameToProperties.insert( stripNS( mLayerProperties[i].mName ), mLayerProperties[i] );
}
if ( mLayerProperties.size() == 1 )
{
mTypeName = mLayerProperties[0].mName;
mGeometryAttribute = mLayerProperties[0].mGeometryAttribute;
mGeometryAttributeBA = mGeometryAttribute.toUtf8();
mGeometryAttributePtr = mGeometryAttributeBA.constData();
mGeometryAttributeUTF8Len = strlen( mGeometryAttributePtr );
int index = mTypeName.indexOf( ':' );
if ( index != -1 && index < mTypeName.length() )
{
mTypeName = mTypeName.mid( index + 1 );
}
mTypeNameBA = mTypeName.toUtf8();
mTypeNamePtr = mTypeNameBA.constData();
mTypeNameUTF8Len = strlen( mTypeNamePtr );
}
mEndian = QgsApplication::endian();
mParser = XML_ParserCreateNS( nullptr, NS_SEPARATOR );
XML_SetUserData( mParser, this );
XML_SetElementHandler( mParser, QgsGmlStreamingParser::start, QgsGmlStreamingParser::end );
XML_SetCharacterDataHandler( mParser, QgsGmlStreamingParser::chars );
}
QgsGmlStreamingParser::~QgsGmlStreamingParser()
{
XML_ParserFree( mParser );
// Normally a sane user of this class should have consumed everything...
Q_FOREACH ( QgsGmlFeaturePtrGmlIdPair featPair, mFeatureList )
{
delete featPair.first;
}
delete mCurrentFeature;
}
bool QgsGmlStreamingParser::processData( const QByteArray &data, bool atEnd )
{
QString errorMsg;
if ( !processData( data, atEnd, errorMsg ) )
{
QgsMessageLog::logMessage( errorMsg, QObject::tr( "WFS" ) );
return false;
}
return true;
}
bool QgsGmlStreamingParser::processData( const QByteArray &data, bool atEnd, QString &errorMsg )
{
if ( XML_Parse( mParser, data.data(), data.size(), atEnd ) == 0 )
{
XML_Error errorCode = XML_GetErrorCode( mParser );
errorMsg = QObject::tr( "Error: %1 on line %2, column %3" )
.arg( XML_ErrorString( errorCode ) )
.arg( XML_GetCurrentLineNumber( mParser ) )
.arg( XML_GetCurrentColumnNumber( mParser ) );
return false;
}
return true;
}
QVector<QgsGmlStreamingParser::QgsGmlFeaturePtrGmlIdPair> QgsGmlStreamingParser::getAndStealReadyFeatures()
{
QVector<QgsGmlFeaturePtrGmlIdPair> ret = mFeatureList;
mFeatureList.clear();
return ret;
}
#define LOCALNAME_EQUALS(string_constant) \
( localNameLen == ( int )strlen( string_constant ) && memcmp(pszLocalName, string_constant, localNameLen) == 0 )
void QgsGmlStreamingParser::startElement( const XML_Char *el, const XML_Char **attr )
{
const int elLen = ( int )strlen( el );
const char *pszSep = strchr( el, NS_SEPARATOR );
const char *pszLocalName = ( pszSep ) ? pszSep + 1 : el;
const int nsLen = ( pszSep ) ? ( int )( pszSep - el ) : 0;
const int localNameLen = ( pszSep ) ? ( int )( elLen - nsLen ) - 1 : elLen;
ParseMode parseMode( mParseModeStack.isEmpty() ? None : mParseModeStack.top() );
// Figure out if the GML namespace is GML_NAMESPACE or GML32_NAMESPACE
if ( !mGMLNameSpaceURIPtr && pszSep )
{
if ( nsLen == ( int )strlen( GML_NAMESPACE ) && memcmp( el, GML_NAMESPACE, nsLen ) == 0 )
{
mGMLNameSpaceURI = GML_NAMESPACE;
mGMLNameSpaceURIPtr = GML_NAMESPACE;
}
else if ( nsLen == ( int )strlen( GML32_NAMESPACE ) && memcmp( el, GML32_NAMESPACE, nsLen ) == 0 )
{
mGMLNameSpaceURI = GML32_NAMESPACE;
mGMLNameSpaceURIPtr = GML32_NAMESPACE;
}
}
const bool isGMLNS = ( nsLen == mGMLNameSpaceURI.size() && mGMLNameSpaceURIPtr && memcmp( el, mGMLNameSpaceURIPtr, nsLen ) == 0 );
bool isGeom = false;
if ( parseMode == Geometry || parseMode == Coordinate || parseMode == PosList ||
parseMode == MultiPoint || parseMode == MultiLine || parseMode == MultiPolygon )
{
mGeometryString.append( "<", 1 );
mGeometryString.append( pszLocalName, localNameLen );
mGeometryString.append( " ", 1 );
for ( const XML_Char **attrIter = attr; attrIter && *attrIter; attrIter += 2 )
{
mGeometryString.append( attrIter[0] );
mGeometryString.append( "=\"", 2 );
mGeometryString.append( attrIter[1] );
mGeometryString.append( "\" ", 2 );
}
mGeometryString.append( ">", 1 );
}
if ( isGMLNS && LOCALNAME_EQUALS( "coordinates" ) )
{
mParseModeStack.push( Coordinate );
mCoorMode = QgsGmlStreamingParser::Coordinate;
mStringCash.clear();
mCoordinateSeparator = readAttribute( QStringLiteral( "cs" ), attr );
if ( mCoordinateSeparator.isEmpty() )
{
mCoordinateSeparator = ',';
}
mTupleSeparator = readAttribute( QStringLiteral( "ts" ), attr );
if ( mTupleSeparator.isEmpty() )
{
mTupleSeparator = ' ';
}
}
else if ( isGMLNS &&
( LOCALNAME_EQUALS( "pos" ) || LOCALNAME_EQUALS( "posList" ) ) )
{
mParseModeStack.push( QgsGmlStreamingParser::PosList );
mCoorMode = QgsGmlStreamingParser::PosList;
mStringCash.clear();
if ( mDimension == 0 )
{
QString srsDimension = readAttribute( QStringLiteral( "srsDimension" ), attr );
bool ok;
int dimension = srsDimension.toInt( &ok );
if ( ok )
{
mDimension = dimension;
}
}
}
else if ( localNameLen == static_cast<int>( mGeometryAttributeUTF8Len ) &&
memcmp( pszLocalName, mGeometryAttributePtr, localNameLen ) == 0 )
{
mParseModeStack.push( QgsGmlStreamingParser::Geometry );
mFoundUnhandledGeometryElement = false;
mGeometryString.clear();
}
//else if ( mParseModeStack.size() == 0 && elementName == mGMLNameSpaceURI + NS_SEPARATOR + "boundedBy" )
else if ( isGMLNS && LOCALNAME_EQUALS( "boundedBy" ) )
{
mParseModeStack.push( QgsGmlStreamingParser::BoundingBox );
mCurrentExtent = QgsRectangle();
mBoundedByNullFound = false;
}
else if ( parseMode == BoundingBox &&
isGMLNS && LOCALNAME_EQUALS( "null" ) )
{
mParseModeStack.push( QgsGmlStreamingParser::Null );
mBoundedByNullFound = true;
}
else if ( parseMode == BoundingBox &&
isGMLNS && LOCALNAME_EQUALS( "Envelope" ) )
{
isGeom = true;
mParseModeStack.push( QgsGmlStreamingParser::Envelope );
}
else if ( parseMode == Envelope &&
isGMLNS && LOCALNAME_EQUALS( "lowerCorner" ) )
{
mParseModeStack.push( QgsGmlStreamingParser::LowerCorner );
mStringCash.clear();
}
else if ( parseMode == Envelope &&
isGMLNS && LOCALNAME_EQUALS( "upperCorner" ) )
{
mParseModeStack.push( QgsGmlStreamingParser::UpperCorner );
mStringCash.clear();
}
else if ( parseMode == None && !mTypeNamePtr &&
LOCALNAME_EQUALS( "Tuple" ) )
{
Q_ASSERT( !mCurrentFeature );
mCurrentFeature = new QgsFeature( mFeatureCount );
mCurrentFeature->setFields( mFields ); // allow name-based attribute lookups
QgsAttributes attributes( mThematicAttributes.size() ); //add empty attributes
mCurrentFeature->setAttributes( attributes );
mParseModeStack.push( QgsGmlStreamingParser::Tuple );
mCurrentFeatureId.clear();
}
else if ( parseMode == Tuple )
{
QString currentTypename( QString::fromUtf8( pszLocalName, localNameLen ) );
QMap< QString, LayerProperties >::const_iterator iter = mMapTypeNameToProperties.constFind( currentTypename );
if ( iter != mMapTypeNameToProperties.end() )
{
mFeatureTupleDepth = mParseDepth;
mCurrentTypename = currentTypename;
mGeometryAttribute.clear();
if ( mCurrentWKB.size() == 0 )
{
mGeometryAttribute = iter.value().mGeometryAttribute;
}
mGeometryAttributeBA = mGeometryAttribute.toUtf8();
mGeometryAttributePtr = mGeometryAttributeBA.constData();
mGeometryAttributeUTF8Len = strlen( mGeometryAttributePtr );
mParseModeStack.push( QgsGmlStreamingParser::FeatureTuple );
QString id;
if ( mGMLNameSpaceURI.isEmpty() )
{
id = readAttribute( QString( GML_NAMESPACE ) + NS_SEPARATOR + "id", attr );
if ( !id.isEmpty() )
{
mGMLNameSpaceURI = GML_NAMESPACE;
mGMLNameSpaceURIPtr = GML_NAMESPACE;
}
else
{
id = readAttribute( QString( GML32_NAMESPACE ) + NS_SEPARATOR + "id", attr );
if ( !id.isEmpty() )
{
mGMLNameSpaceURI = GML32_NAMESPACE;
mGMLNameSpaceURIPtr = GML32_NAMESPACE;
}
}
}
else
id = readAttribute( mGMLNameSpaceURI + NS_SEPARATOR + "id", attr );
if ( !mCurrentFeatureId.isEmpty() )
mCurrentFeatureId += '|';
mCurrentFeatureId += id;
}
}
else if ( parseMode == None &&
localNameLen == static_cast<int>( mTypeNameUTF8Len ) &&
memcmp( pszLocalName, mTypeNamePtr, mTypeNameUTF8Len ) == 0 )
{
Q_ASSERT( !mCurrentFeature );
mCurrentFeature = new QgsFeature( mFeatureCount );
mCurrentFeature->setFields( mFields ); // allow name-based attribute lookups
QgsAttributes attributes( mThematicAttributes.size() ); //add empty attributes
mCurrentFeature->setAttributes( attributes );
mParseModeStack.push( QgsGmlStreamingParser::Feature );
mCurrentFeatureId = readAttribute( QStringLiteral( "fid" ), attr );
if ( mCurrentFeatureId.isEmpty() )
{
// Figure out if the GML namespace is GML_NAMESPACE or GML32_NAMESPACE
// (should happen only for the first features if there's no gml: element
// encountered before
if ( mGMLNameSpaceURI.isEmpty() )
{
mCurrentFeatureId = readAttribute( QString( GML_NAMESPACE ) + NS_SEPARATOR + "id", attr );
if ( !mCurrentFeatureId.isEmpty() )
{
mGMLNameSpaceURI = GML_NAMESPACE;
mGMLNameSpaceURIPtr = GML_NAMESPACE;
}
else
{
mCurrentFeatureId = readAttribute( QString( GML32_NAMESPACE ) + NS_SEPARATOR + "id", attr );
if ( !mCurrentFeatureId.isEmpty() )
{
mGMLNameSpaceURI = GML32_NAMESPACE;
mGMLNameSpaceURIPtr = GML32_NAMESPACE;
}
}
}
else
mCurrentFeatureId = readAttribute( mGMLNameSpaceURI + NS_SEPARATOR + "id", attr );
}
}
else if ( parseMode == BoundingBox && isGMLNS && LOCALNAME_EQUALS( "Box" ) )
{
isGeom = true;
}
else if ( isGMLNS && LOCALNAME_EQUALS( "Point" ) )
{
isGeom = true;
}
else if ( isGMLNS && LOCALNAME_EQUALS( "LineString" ) )
{
isGeom = true;
}
else if ( isGMLNS &&
localNameLen == ( int )strlen( "Polygon" ) && memcmp( pszLocalName, "Polygon", localNameLen ) == 0 )
{
isGeom = true;
mCurrentWKBFragments.push_back( QList<QgsWkbPtr>() );
}
else if ( isGMLNS && LOCALNAME_EQUALS( "MultiPoint" ) )
{
isGeom = true;
mParseModeStack.push( QgsGmlStreamingParser::MultiPoint );
//we need one nested list for intermediate WKB
mCurrentWKBFragments.push_back( QList<QgsWkbPtr>() );
}
else if ( isGMLNS && ( LOCALNAME_EQUALS( "MultiLineString" ) || LOCALNAME_EQUALS( "MultiCurve" ) ) )
{
isGeom = true;
mParseModeStack.push( QgsGmlStreamingParser::MultiLine );
//we need one nested list for intermediate WKB
mCurrentWKBFragments.push_back( QList<QgsWkbPtr>() );
}
else if ( isGMLNS && ( LOCALNAME_EQUALS( "MultiPolygon" ) || LOCALNAME_EQUALS( "MultiSurface" ) ) )
{
isGeom = true;
mParseModeStack.push( QgsGmlStreamingParser::MultiPolygon );
}
else if ( parseMode == FeatureTuple )
{
QString localName( QString::fromUtf8( pszLocalName, localNameLen ) );
if ( mThematicAttributes.contains( mCurrentTypename + '|' + localName ) )
{
mParseModeStack.push( QgsGmlStreamingParser::AttributeTuple );
mAttributeName = mCurrentTypename + '|' + localName;
mStringCash.clear();
}
}
else if ( parseMode == Feature )
{
QString localName( QString::fromUtf8( pszLocalName, localNameLen ) );
if ( mThematicAttributes.contains( localName ) )
{
mParseModeStack.push( QgsGmlStreamingParser::Attribute );
mAttributeName = localName;
mStringCash.clear();
}
else
{
// QGIS server (2.2) is using:
// <Attribute value="My description" name="desc"/>
if ( localName.compare( QLatin1String( "attribute" ), Qt::CaseInsensitive ) == 0 )
{
QString name = readAttribute( QStringLiteral( "name" ), attr );
if ( mThematicAttributes.contains( name ) )
{
QString value = readAttribute( QStringLiteral( "value" ), attr );
setAttribute( name, value );
}
}
}
}
else if ( mParseDepth == 0 && LOCALNAME_EQUALS( "FeatureCollection" ) )
{
QString numberReturned = readAttribute( QStringLiteral( "numberReturned" ), attr ); // WFS 2.0
if ( numberReturned.isEmpty() )
numberReturned = readAttribute( QStringLiteral( "numberOfFeatures" ), attr ); // WFS 1.1
bool conversionOk;
mNumberReturned = numberReturned.toInt( &conversionOk );
if ( !conversionOk )
mNumberReturned = -1;
QString numberMatched = readAttribute( QStringLiteral( "numberMatched" ), attr ); // WFS 2.0
mNumberMatched = numberMatched.toInt( &conversionOk );
if ( !conversionOk ) // likely since numberMatched="unknown" is legal
mNumberMatched = -1;
}
else if ( mParseDepth == 0 && LOCALNAME_EQUALS( "ExceptionReport" ) )
{
mIsException = true;
mParseModeStack.push( QgsGmlStreamingParser::ExceptionReport );
}
else if ( mIsException && LOCALNAME_EQUALS( "ExceptionText" ) )
{
mStringCash.clear();
mParseModeStack.push( QgsGmlStreamingParser::ExceptionText );
}
else if ( mParseDepth == 1 && LOCALNAME_EQUALS( "truncatedResponse" ) )
{
// e.g: http://services.cuzk.cz/wfs/inspire-cp-wfs.asp?SERVICE=WFS&REQUEST=GetFeature&VERSION=2.0.0&TYPENAMES=cp:CadastralParcel
mTruncatedResponse = true;
}
else if ( !mGeometryString.empty() &&
!LOCALNAME_EQUALS( "exterior" ) &&
!LOCALNAME_EQUALS( "interior" ) &&
!LOCALNAME_EQUALS( "innerBoundaryIs" ) &&
!LOCALNAME_EQUALS( "outerBoundaryIs" ) &&
!LOCALNAME_EQUALS( "LinearRing" ) &&
!LOCALNAME_EQUALS( "pointMember" ) &&
!LOCALNAME_EQUALS( "curveMember" ) &&
!LOCALNAME_EQUALS( "lineStringMember" ) &&
!LOCALNAME_EQUALS( "polygonMember" ) &&
!LOCALNAME_EQUALS( "surfaceMember" ) &&
!LOCALNAME_EQUALS( "Curve" ) &&
!LOCALNAME_EQUALS( "segments" ) &&
!LOCALNAME_EQUALS( "LineStringSegment" ) )
{
//QgsDebugMsg( "Found unhandled geometry element " + QString::fromUtf8( pszLocalName, localNameLen ) );
mFoundUnhandledGeometryElement = true;
}
if ( !mGeometryString.empty() )
isGeom = true;
if ( mDimension == 0 && isGeom )
{
// srsDimension can also be set on the top geometry element
// e.g. https://data.linz.govt.nz/services;key=XXXXXXXX/wfs?SERVICE=WFS&REQUEST=GetFeature&VERSION=2.0.0&TYPENAMES=data.linz.govt.nz:layer-524
QString srsDimension = readAttribute( QStringLiteral( "srsDimension" ), attr );
bool ok;
int dimension = srsDimension.toInt( &ok );
if ( ok )
{
mDimension = dimension;
}
}
if ( mEpsg == 0 && isGeom )
{
if ( readEpsgFromAttribute( mEpsg, attr ) != 0 )
{
QgsDebugMsg( "error, could not get epsg id" );
}
else
{
QgsDebugMsg( QString( "mEpsg = %1" ).arg( mEpsg ) );
}
}
mParseDepth ++;
}
void QgsGmlStreamingParser::endElement( const XML_Char *el )
{
mParseDepth --;
const int elLen = ( int )strlen( el );
const char *pszSep = strchr( el, NS_SEPARATOR );
const char *pszLocalName = ( pszSep ) ? pszSep + 1 : el;
const int nsLen = ( pszSep ) ? ( int )( pszSep - el ) : 0;
const int localNameLen = ( pszSep ) ? ( int )( elLen - nsLen ) - 1 : elLen;
ParseMode parseMode( mParseModeStack.isEmpty() ? None : mParseModeStack.top() );
const bool isGMLNS = ( nsLen == mGMLNameSpaceURI.size() && mGMLNameSpaceURIPtr && memcmp( el, mGMLNameSpaceURIPtr, nsLen ) == 0 );
if ( parseMode == Coordinate && isGMLNS && LOCALNAME_EQUALS( "coordinates" ) )
{
mParseModeStack.pop();
}
else if ( parseMode == PosList && isGMLNS &&
( LOCALNAME_EQUALS( "pos" ) || LOCALNAME_EQUALS( "posList" ) ) )
{
mParseModeStack.pop();
}
else if ( parseMode == AttributeTuple &&
mCurrentTypename + '|' + QString::fromUtf8( pszLocalName, localNameLen ) == mAttributeName ) //add a thematic attribute to the feature
{
mParseModeStack.pop();
setAttribute( mAttributeName, mStringCash );
}
else if ( parseMode == Attribute && QString::fromUtf8( pszLocalName, localNameLen ) == mAttributeName ) //add a thematic attribute to the feature
{
mParseModeStack.pop();
setAttribute( mAttributeName, mStringCash );
}
else if ( parseMode == Geometry &&
localNameLen == static_cast<int>( mGeometryAttributeUTF8Len ) &&
memcmp( pszLocalName, mGeometryAttributePtr, localNameLen ) == 0 )
{
mParseModeStack.pop();
if ( mFoundUnhandledGeometryElement )
{
OGRGeometryH hGeom = OGR_G_CreateFromGML( mGeometryString.c_str() );
if ( hGeom )
{
const int wkbSize = OGR_G_WkbSize( hGeom );
unsigned char *pabyBuffer = new unsigned char[ wkbSize ];
OGR_G_ExportToIsoWkb( hGeom, wkbNDR, pabyBuffer );
QgsGeometry g;
g.fromWkb( pabyBuffer, wkbSize );
if ( mInvertAxisOrientation )
{
g.transform( QTransform( 0, 1, 1, 0, 0, 0 ) );
}
mCurrentFeature->setGeometry( g );
OGR_G_DestroyGeometry( hGeom );
}
}
mGeometryString.clear();
}
else if ( parseMode == BoundingBox && isGMLNS && LOCALNAME_EQUALS( "boundedBy" ) )
{
//create bounding box from mStringCash
if ( mCurrentExtent.isNull() &&
!mBoundedByNullFound &&
!createBBoxFromCoordinateString( mCurrentExtent, mStringCash ) )
{
QgsDebugMsg( "creation of bounding box failed" );
}
if ( !mCurrentExtent.isNull() && mLayerExtent.isNull() &&
mCurrentFeature == nullptr && mFeatureCount == 0 )
{
mLayerExtent = mCurrentExtent;
mCurrentExtent = QgsRectangle();
}
mParseModeStack.pop();
}
else if ( parseMode == Null && isGMLNS && LOCALNAME_EQUALS( "null" ) )
{
mParseModeStack.pop();
}
else if ( parseMode == Envelope && isGMLNS && LOCALNAME_EQUALS( "Envelope" ) )
{
mParseModeStack.pop();
}
else if ( parseMode == LowerCorner && isGMLNS && LOCALNAME_EQUALS( "lowerCorner" ) )
{
QList<QgsPointXY> points;
pointsFromPosListString( points, mStringCash, 2 );
if ( points.size() == 1 )
{
mCurrentExtent.setXMinimum( points[0].x() );
mCurrentExtent.setYMinimum( points[0].y() );
}
mParseModeStack.pop();
}
else if ( parseMode == UpperCorner && isGMLNS && LOCALNAME_EQUALS( "upperCorner" ) )
{
QList<QgsPointXY> points;
pointsFromPosListString( points, mStringCash, 2 );
if ( points.size() == 1 )
{
mCurrentExtent.setXMaximum( points[0].x() );
mCurrentExtent.setYMaximum( points[0].y() );
}
mParseModeStack.pop();
}
else if ( parseMode == FeatureTuple && mParseDepth == mFeatureTupleDepth )
{
mParseModeStack.pop();
mFeatureTupleDepth = 0;
}
else if ( ( parseMode == Tuple && !mTypeNamePtr &&
LOCALNAME_EQUALS( "Tuple" ) ) ||
( parseMode == Feature &&
localNameLen == static_cast<int>( mTypeNameUTF8Len ) &&
memcmp( pszLocalName, mTypeNamePtr, mTypeNameUTF8Len ) == 0 ) )
{
Q_ASSERT( mCurrentFeature );
if ( !mCurrentFeature->hasGeometry() )
{
if ( mCurrentWKB.size() > 0 )
{
QgsGeometry g;
g.fromWkb( mCurrentWKB, mCurrentWKB.size() );
mCurrentFeature->setGeometry( g );
mCurrentWKB = QgsWkbPtr( nullptr, 0 );
}
else if ( !mCurrentExtent.isEmpty() )
{
mCurrentFeature->setGeometry( QgsGeometry::fromRect( mCurrentExtent ) );
}
}
mCurrentFeature->setValid( true );
mFeatureList.push_back( QgsGmlFeaturePtrGmlIdPair( mCurrentFeature, mCurrentFeatureId ) );
mCurrentFeature = nullptr;
++mFeatureCount;
mParseModeStack.pop();
}
else if ( isGMLNS && LOCALNAME_EQUALS( "Point" ) )
{
QList<QgsPointXY> pointList;
if ( pointsFromString( pointList, mStringCash ) != 0 )
{
//error
}
if ( pointList.isEmpty() )
return; // error
if ( parseMode == QgsGmlStreamingParser::Geometry )
{
//directly add WKB point to the feature
if ( getPointWKB( mCurrentWKB, *( pointList.constBegin() ) ) != 0 )
{
//error
}
if ( mWkbType != QgsWkbTypes::MultiPoint ) //keep multitype in case of geometry type mix
{
mWkbType = QgsWkbTypes::Point;
}
}
else //multipoint, add WKB as fragment