doc/src/snippets/textblock-fragments/xmlwriter.cpp
author eckhart.koppen@nokia.com
Wed, 31 Mar 2010 11:06:36 +0300
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/****************************************************************************
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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 documentation 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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**
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**
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**
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**
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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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#include <QtGui>
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#include "xmlwriter.h"
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QDomDocument *XmlWriter::toXml()
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{
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    QDomImplementation implementation;
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    QDomDocumentType docType = implementation.createDocumentType(
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        "scribe-document", "scribe", "qt.nokia.com/scribe");
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    document = new QDomDocument(docType);
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    // ### This processing instruction is required to ensure that any kind
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    // of encoding is given when the document is written.
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    QDomProcessingInstruction process = document->createProcessingInstruction(
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        "xml", "version=\"1.0\" encoding=\"utf-8\"");
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    document->appendChild(process);
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    QDomElement documentElement = document->createElement("document");
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    document->appendChild(documentElement);
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//! [0]
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    QTextBlock currentBlock = textDocument->begin();
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    while (currentBlock.isValid()) {
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//! [0]
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        QDomElement blockElement = document->createElement("block");
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        document->appendChild(blockElement);
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        readFragment(currentBlock, blockElement, document);
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//! [1]
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        processBlock(currentBlock);
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//! [1]
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//! [2]
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        currentBlock = currentBlock.next();
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    }
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//! [2]
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    return document;
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}
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void XmlWriter::readFragment(const QTextBlock &currentBlock,
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                             QDomElement blockElement,
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                             QDomDocument *document)
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{
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//! [3] //! [4]
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    QTextBlock::iterator it;
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    for (it = currentBlock.begin(); !(it.atEnd()); ++it) {
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        QTextFragment currentFragment = it.fragment();
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        if (currentFragment.isValid())
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//! [3] //! [5]
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            processFragment(currentFragment);
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//! [4] //! [5]
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        if (currentFragment.isValid()) {
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            QDomElement fragmentElement = document->createElement("fragment");
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            blockElement.appendChild(fragmentElement);
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            fragmentElement.setAttribute("length", currentFragment.length());
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            QDomText fragmentText = document->createTextNode(currentFragment.text());
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            fragmentElement.appendChild(fragmentText);
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//! [6]
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        }
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//! [7]
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    }
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//! [6] //! [7]
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}
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void XmlWriter::processBlock(const QTextBlock &currentBlock)
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{
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}
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void XmlWriter::processFragment(const QTextFragment &currentFragment)
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{
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}