File indexing completed on 2024-04-28 03:52:32

 /*  This file is part of the KDE project
 
     SPDX-FileCopyrightText: 2014 Maarten De Meyer <de.meyer.maarten@gmail.com>
 
     SPDX-License-Identifier: BSD-2-Clause
 */
 
 /*
  * bzip2gzip
  * This example shows the usage of KCompressionDevice.
  * It converts BZip2 files to GZip archives.
  *
  * api: KCompressionDevice(QIODevice * inputDevice, bool autoDeleteInputDevice, CompressionType type)
  * api: KCompressionDevice(const QString & fileName, CompressionType type)
  * api: QIODevice::readAll()
  * api: QIODevice::read(qint64 maxSize)
  * api: QIODevice::write(const QByteArray &data)
  *
  * Usage: ./bzip2gzip <archive.bz2>
  */
 
 #include <QCoreApplication>
 #include <QFile>
 #include <QFileInfo>
 #include <QStringList>
 
 #include <KCompressionDevice>
 
 int main(int argc, char *argv[])
 {
     QCoreApplication app(argc, argv);
     QStringList args(app.arguments());
 
     if (args.size() != 2) {
         qWarning("Usage: ./bzip2gzip <archive.bz2>");
         return 1;
     }
 
     QString inputFile = args.at(1);
     QFile file(inputFile);
     QFileInfo info(inputFile);
 
     if (info.suffix() != QLatin1String("bz2")) {
         qCritical("Error: not a valid BZip2 file!");
         return 1;
     }
 
     //@@snippet_begin(kcompressiondevice_example)
     // Open the input archive
     KCompressionDevice input(&file, false, KCompressionDevice::BZip2);
     input.open(QIODevice::ReadOnly);
 
     QString outputFile = (info.completeBaseName() + QLatin1String(".gz"));
 
     // Open the new output file
     KCompressionDevice output(outputFile, KCompressionDevice::GZip);
     output.open(QIODevice::WriteOnly);
 
     while (!input.atEnd()) {
         // Read and uncompress the data
         QByteArray data = input.read(512);
 
         // Write data like you would to any other QIODevice
         output.write(data);
     }
 
     input.close();
     output.close();
     //@@snippet_end
 
     return 0;
 }