Qt 4.8: main.cpp Example File (xml/htmlinfo/main.cpp)

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# main.cpp Example File

xml/htmlinfo/main.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2014 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 <QtCore>

     void parseHtmlFile(QTextStream &out, const QString &fileName) {
         QFile file(fileName);

         out << "Analysis of HTML file: " << fileName << endl;

         if (!file.open(QIODevice::ReadOnly)) {
             out << "  Couldn't open the file." << endl << endl << endl;
             return;
         }

         QXmlStreamReader reader(&file);

         int paragraphCount = 0;
         QStringList links;
         QString title;
         while (!reader.atEnd()) {
             reader.readNext();
             if (reader.isStartElement()) {
                 if (reader.name() == "title")
                     title = reader.readElementText();
                 else if(reader.name() == "a")
                     links.append(reader.attributes().value("href").toString());
                 else if(reader.name() == "p")
                     ++paragraphCount;
             }
         }

         if (reader.hasError()) {
             out << "  The HTML file isn't well-formed: " << reader.errorString()
                 << endl << endl << endl;
             return;
         }

         out << "  Title: \"" << title << "\"" << endl
             << "  Number of paragraphs: " << paragraphCount << endl
             << "  Number of links: " << links.size() << endl
             << "  Showing first few links:" << endl;

         while(links.size() > 5)
             links.removeLast();

         foreach(QString link, links)
             out << "    " << link << endl;
         out << endl << endl;
     }

     int main(int argc, char **argv)
     {
         // initialize QtCore application
         QCoreApplication app(argc, argv);

         // get a list of all html files in the current directory
         QStringList filter;
         filter << "*.htm";
         filter << "*.html";

         QStringList htmlFiles = QDir(":/").entryList(filter, QDir::Files);

         QTextStream out(stdout);

         if (htmlFiles.isEmpty()) {
             out << "No html files available.";
             return 1;
         }

         // parse each html file and write the result to file/stream
         foreach(QString file, htmlFiles)
             parseHtmlFile(out, ":/" + file);

         return 0;
     }