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124 lines
3.6 KiB
C++
124 lines
3.6 KiB
C++
/***************************************************************************
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qgsprojectbadlayerhandler.cpp - QgsProjectBadLayerHandler
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---------------------
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begin : 22.10.2016
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copyright : (C) 2016 by Matthias Kuhn
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email : matthias@opengis.ch
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "qgsprojectbadlayerhandler.h"
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#include "qgslogger.h"
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#include "qgsmessagelog.h"
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#include "qgsapplication.h"
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#include <QFileInfo>
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void QgsProjectBadLayerHandler::handleBadLayers( const QList<QDomNode> &layers )
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{
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QgsApplication::messageLog()->logMessage( QObject::tr( "%1 bad layers found:" ).arg( layers.size() ) );
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Q_FOREACH ( const QDomNode &layer, layers )
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{
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QgsApplication::messageLog()->logMessage( QObject::tr( " * %1" ).arg( dataSource( layer ) ) );
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}
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}
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QgsProjectBadLayerHandler::DataType QgsProjectBadLayerHandler::dataType( const QDomNode &layerNode )
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{
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QString type = layerNode.toElement().attribute( QStringLiteral( "type" ) );
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if ( type.isNull() )
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{
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QgsDebugMsg( QStringLiteral( "cannot find ``type'' attribute" ) );
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return IS_BOGUS;
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}
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if ( "raster" == type )
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{
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QgsDebugMsg( QStringLiteral( "is a raster" ) );
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return IS_RASTER;
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}
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else if ( "vector" == type )
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{
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QgsDebugMsg( QStringLiteral( "is a vector" ) );
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return IS_VECTOR;
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}
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QgsDebugMsg( "is unknown type " + type );
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return IS_BOGUS;
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}
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QString QgsProjectBadLayerHandler::dataSource( const QDomNode &layerNode )
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{
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QDomNode dataSourceNode = layerNode.namedItem( QStringLiteral( "datasource" ) );
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if ( dataSourceNode.isNull() )
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{
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QgsDebugMsg( QStringLiteral( "cannot find datasource node" ) );
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return QString();
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}
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return dataSourceNode.toElement().text();
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}
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QgsProjectBadLayerHandler::ProviderType QgsProjectBadLayerHandler::providerType( const QDomNode &layerNode )
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{
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// XXX but what about rasters that can be URLs? _Can_ they be URLs?
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switch ( dataType( layerNode ) )
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{
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case IS_VECTOR:
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{
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QString ds = dataSource( layerNode );
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QgsDebugMsg( "datasource is " + ds );
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if ( ds.contains( QLatin1String( "host=" ) ) )
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{
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return IS_URL;
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}
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else if ( ds.contains( QLatin1String( "dbname=" ) ) )
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{
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return IS_DATABASE;
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}
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// be default, then, this should be a file based layer data source
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// XXX is this a reasonable assumption?
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return IS_FILE;
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}
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case IS_RASTER: // rasters are currently only accessed as
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// physical files
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return IS_FILE;
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default:
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QgsDebugMsg( QStringLiteral( "unknown ``type'' attribute" ) );
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}
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return IS_Unknown;
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}
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void QgsProjectBadLayerHandler::setDataSource( QDomNode &layerNode, const QString &dataSource )
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{
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QDomNode dataSourceNode = layerNode.namedItem( QStringLiteral( "datasource" ) );
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QDomElement dataSourceElement = dataSourceNode.toElement();
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QDomText dataSourceText = dataSourceElement.firstChild().toText();
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QgsDebugMsg( "datasource changed from " + dataSourceText.data() );
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dataSourceText.setData( dataSource );
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QgsDebugMsg( "to " + dataSourceText.data() );
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}
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