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4166a3ea62
By flipping string literals to QStringLiteral/QLatin1String see https://woboq.com/blog/qstringliteral.html
87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/***************************************************************************
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qgsscaleutils.cpp
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---------------------
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begin : July 2012
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copyright : (C) 2012 by Alexander Bruy
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email : alexander dot bruy at gmail dot com
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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 <QFile>
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#include <QDomDocument>
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#include <QTextStream>
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#include "qgsscaleutils.h"
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bool QgsScaleUtils::saveScaleList( const QString &fileName, const QStringList &scales, QString &errorMessage )
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{
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QDomDocument doc;
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QDomElement root = doc.createElement( QStringLiteral( "qgsScales" ) );
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root.setAttribute( QStringLiteral( "version" ), QStringLiteral( "1.0" ) );
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doc.appendChild( root );
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for ( int i = 0; i < scales.count(); ++i )
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{
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QDomElement el = doc.createElement( QStringLiteral( "scale" ) );
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el.setAttribute( QStringLiteral( "value" ), scales.at( i ) );
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root.appendChild( el );
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}
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QFile file( fileName );
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if ( !file.open( QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate ) )
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{
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errorMessage = QStringLiteral( "Cannot write file %1:\n%2." ).arg( fileName, file.errorString() );
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return false;
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}
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QTextStream out( &file );
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doc.save( out, 4 );
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return true;
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}
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bool QgsScaleUtils::loadScaleList( const QString &fileName, QStringList &scales, QString &errorMessage )
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{
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QFile file( fileName );
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if ( !file.open( QIODevice::ReadOnly | QIODevice::Text ) )
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{
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errorMessage = QStringLiteral( "Cannot read file %1:\n%2." ).arg( fileName, file.errorString() );
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return false;
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}
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QDomDocument doc;
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QString errorStr;
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int errorLine;
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int errorColumn;
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if ( !doc.setContent( &file, true, &errorStr, &errorLine, &errorColumn ) )
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{
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errorMessage = QStringLiteral( "Parse error at line %1, column %2:\n%3" )
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.arg( errorLine )
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.arg( errorColumn )
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.arg( errorStr );
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return false;
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}
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QDomElement root = doc.documentElement();
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if ( root.tagName() != QLatin1String( "qgsScales" ) )
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{
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errorMessage = QStringLiteral( "The file is not an scales exchange file." );
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return false;
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}
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QDomElement child = root.firstChildElement();
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while ( !child.isNull() )
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{
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scales.append( child.attribute( QStringLiteral( "value" ) ) );
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child = child.nextSiblingElement();
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}
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return true;
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}
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