/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the qt3to4 porting application of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "textreplacement.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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bool TextReplacements::insert(QByteArray newText, int insertPosition, int currentLenght)+
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{+
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    //bubble sort the new replacement into the list+
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    int i;+
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    for(i=0; i<textReplacementList.size(); ++i) {+
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        if (insertPosition == textReplacementList.at(i).insertPosition)+
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            return false; // multiple replacements on the same insertPosition is not allowed.+
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        if(insertPosition < textReplacementList.at(i).insertPosition)+
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            break;  //we found the right position+
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    }+
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    //++i;+
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  //  cout << "inserting new text " << newText.constData() << endl;+
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    // %s at %d overwriting %d bytes at list pos %d\n", newText.constData(), insertPosition, currentLenght, i);+
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    TextReplacement rep;+
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    rep.newText=newText;+
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    rep.insertPosition=insertPosition;+
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    rep.currentLenght=currentLenght;+
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+
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    textReplacementList.insert(i, rep);+
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    return true;+
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}+
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+
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void TextReplacements::clear()+
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{+
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    textReplacementList.clear();+
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}+
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+
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QByteArray TextReplacements::apply(QByteArray current)+
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{+
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    QByteArray newData=current;+
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    int i;+
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    int replacementOffset=0;+
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+
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    for(i=0; i<textReplacementList.size(); ++i) {+
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        TextReplacement rep=textReplacementList.at(i);+
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        //printf("applying new text %s insert at %d overwriting %d bytes \n", rep.newText.constData(), rep.insertPosition, rep.currentLenght);+
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        newData.remove(rep.insertPosition+replacementOffset, rep.currentLenght);+
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        newData.insert(rep.insertPosition+replacementOffset, rep.newText);+
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+
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        //modify all remaining replacements if we change the document length+
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        replacementOffset+=(rep.newText.size() - rep.currentLenght);+
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    }+
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+
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    return newData;+
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}+
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+
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TextReplacements &TextReplacements::operator+=(const TextReplacements &other)+
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{+
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    foreach(TextReplacement rep, other.replacements()) {+
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        insert(rep.newText, rep.insertPosition, rep.currentLenght);+
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    }+
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    return *this;+
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}+
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+
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QT_END_NAMESPACE+
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