Qt Reference Documentation

xbelgenerator.cpp Example File

xml/saxbookmarks/xbelgenerator.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/legal
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
 **     of its contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtGui>

 #include "xbelgenerator.h"

 XbelGenerator::XbelGenerator(QTreeWidget *treeWidget)
     : treeWidget(treeWidget)
 {
 }

 bool XbelGenerator::write(QIODevice *device)
 {
     out.setDevice(device);
     out.setCodec("UTF-8");
     out << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
         << "<!DOCTYPE xbel>\n"
         << "<xbel version=\"1.0\">\n";

     for (int i = 0; i < treeWidget->topLevelItemCount(); ++i)
         generateItem(treeWidget->topLevelItem(i), 1);

     out << "</xbel>\n";
     return true;
 }

 QString XbelGenerator::indent(int depth)
 {
     const int IndentSize = 4;
     return QString(IndentSize * depth, ' ');
 }

 QString XbelGenerator::escapedText(const QString &str)
 {
     QString result = str;
     result.replace("&", "&amp;");
     result.replace("<", "&lt;");
     result.replace(">", "&gt;");
     return result;
 }

 QString XbelGenerator::escapedAttribute(const QString &str)
 {
     QString result = escapedText(str);
     result.replace("\"", "&quot;");
     result.prepend("\"");
     result.append("\"");
     return result;
 }

 void XbelGenerator::generateItem(QTreeWidgetItem *item, int depth)
 {
     QString tagName = item->data(0, Qt::UserRole).toString();
     if (tagName == "folder") {
         bool folded = !treeWidget->isItemExpanded(item);
         out << indent(depth) << "<folder folded=\"" << (folded ? "yes" : "no")
                              << "\">\n"
             << indent(depth + 1) << "<title>" << escapedText(item->text(0))
                                  << "</title>\n";

         for (int i = 0; i < item->childCount(); ++i)
             generateItem(item->child(i), depth + 1);

         out << indent(depth) << "</folder>\n";
     } else if (tagName == "bookmark") {
         out << indent(depth) << "<bookmark";
         if (!item->text(1).isEmpty())
             out << " href=" << escapedAttribute(item->text(1));
         out << ">\n"
             << indent(depth + 1) << "<title>" << escapedText(item->text(0))
                                  << "</title>\n"
             << indent(depth) << "</bookmark>\n";
     } else if (tagName == "separator") {
         out << indent(depth) << "<separator/>\n";
     }
 }