//  XmlStrings.cpp
//
//  Copyright (C) 2013-2016  Jaye Evins <evins@snaught.com>
//
//  This file is part of gLabels-qt.
//
//  gLabels-qt 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 3 of the License, or
//  (at your option) any later version.
//
//  gLabels-qt is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
//


#include <QCoreApplication>
#include <QDebug>
#include <QDomAttr>
#include <QDomDocument>
#include <QDomNode>
#include <QFile>
#include <QStringList>
#include <QTextStream>


namespace
{
        QStringList stringList;
}


void parseElement( const QDomElement& node )
{
        // Examine each attribute for translatable strings
        QDomNamedNodeMap attrNodes = node.attributes();
        for ( int i = 0; i < attrNodes.count(); i++ )
        {
                QDomAttr attr = attrNodes.item(i).toAttr();
                if ( attr.name().at(0) == '_' )
                {
                        if ( !stringList.contains( attr.value() ) )
                        {
                                stringList.append( attr.value() );
                        }
                }
        }

        // Recurse over children
        for ( QDomNode child = node.firstChild(); !child.isNull(); child = child.nextSibling() )
        {
                parseElement( child.toElement() );
        }
}


void parseFile( const QString& filename )
{
        QFile file( filename );

        if ( file.open( QFile::ReadOnly|QFile::Text ) )
        {
                QDomDocument doc;

                if ( doc.setContent( &file, false ) )
                {
                        QDomElement root = doc.documentElement();

                        parseElement( root );
                }
        }
}


int main( int argc, char *argv[] )
{
        QCoreApplication app( argc, argv );

        QStringList filenameList = app.arguments();
        filenameList.removeFirst();  // Remove 0th argument, which is the command name

        for ( QString filename : filenameList )
        {
                parseFile( filename );
        }

        stringList.sort();

        QTextStream out( stdout );

        out << "// Automatically generated with " << app.arguments().at(0) << Qt::endl;
        out << "//" << Qt::endl;
        out << "// Sources:" << Qt::endl;
        for ( QString filename : filenameList )
        {
                out << "//         " << filename << Qt::endl;
        }
        out << "//" << Qt::endl;

        for ( QString string : stringList )
        {
                out << "QT_TRANSLATE_NOOP( \"XmlStrings\", \"" << string << "\" );" << Qt::endl;
        }
}
