File indexing completed on 2025-04-27 07:40:56

 /*
     SPDX-FileCopyrightText: 2006-2009 Sebastian Trueg <trueg@k3b.org>
     SPDX-FileCopyrightText: 1998-2009 Sebastian Trueg <trueg@k3b.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "k3bactivepipe.h"
 
 #include <QDebug>
 #include <QIODevice>
 #include <QThread>
 
 
 class K3b::ActivePipe::Private : public QThread
 {
 public:
     Private( K3b::ActivePipe* pipe ) :
         m_pipe( pipe ),
         sourceIODevice(0),
         sinkIODevice(0),
         closeSinkIODevice( false ),
         closeSourceIODevice( false ) {
     }
 
     void run() override {
         qDebug() << "(K3b::ActivePipe) writing from" << sourceIODevice << "to" << sinkIODevice;
 
         bytesRead = bytesWritten = 0;
         buffer.resize( 10*2048 );
 
         bool fail = false;
         qint64 r = 0;
         while( !fail && ( r = m_pipe->readData( buffer.data(), buffer.size() ) ) > 0 ) {
             bytesRead += r;
 
             ssize_t w = 0;
             ssize_t ww = 0;
             while( w < r ) {
                 if( ( ww = m_pipe->write( buffer.data()+w, r-w ) ) > 0 ) {
                     w += ww;
                     bytesWritten += ww;
                 }
                 else {
                     qDebug() << "write failed." << sinkIODevice->errorString();
                     fail = true;
                     break;
                 }
             }
         }
 
         if ( r < 0 ) {
             qDebug() << "Read failed:" << sourceIODevice->errorString();
         }
 
         qDebug() << "Done:"
                  << ( fail ? QLatin1String( "write failed" ) : QLatin1String( "write success" ) )
                  << ( r != 0 ? QLatin1String( "read failed" ) : QLatin1String( "read success" ) )
                  << "(total bytes read/written:" << bytesRead << "/" << bytesWritten << ")";
     }
 
     void _k3b_close() {
         qDebug();
         if ( closeWhenDone )
             m_pipe->close();
     }
 
 private:
     K3b::ActivePipe* m_pipe;
 
 public:
     QIODevice* sourceIODevice;
     QIODevice* sinkIODevice;
 
     bool closeWhenDone;
     bool closeSinkIODevice;
     bool closeSourceIODevice;
 
     QByteArray buffer;
 
     quint64 bytesRead;
     quint64 bytesWritten;
 };
 
 
 K3b::ActivePipe::ActivePipe()
 {
     d = new Private( this );
     connect( d, SIGNAL(finished()), this, SLOT(_k3b_close()) );
 }
 
 
 K3b::ActivePipe::~ActivePipe()
 {
     delete d;
 }
 
 
 bool K3b::ActivePipe::open( OpenMode mode )
 {
     return QIODevice::open( mode );
 }
 
 
 bool K3b::ActivePipe::open( bool closeWhenDone )
 {
     if( d->isRunning() )
         return false;
 
     QIODevice::open( ReadWrite|Unbuffered );
 
     d->closeWhenDone = closeWhenDone;
 
     if( d->sourceIODevice && !d->sourceIODevice->isOpen() ) {
         qDebug() << "Need to open source device:" << d->sourceIODevice;
         if( !d->sourceIODevice->open( QIODevice::ReadOnly ) )
             return false;
     }
 
     if( d->sinkIODevice && !d->sinkIODevice->isOpen()  ) {
         qDebug() << "Need to open sink device:" << d->sinkIODevice;
         if( !d->sinkIODevice->open( QIODevice::WriteOnly ) )
             return false;
     }
 
     qDebug() << "(K3b::ActivePipe) successfully opened pipe.";
 
     // we only do active piping if both devices are set.
     // Otherwise we only work as a conduit
     if ( d->sourceIODevice && d->sinkIODevice ) {
         d->start();
     }
 
     return true;
 }
 
 
 void K3b::ActivePipe::close()
 {
     qDebug();
     if( d->sourceIODevice && d->closeSourceIODevice )
         d->sourceIODevice->close();
     if( d->sinkIODevice && d->closeSinkIODevice )
         d->sinkIODevice->close();
     d->wait();
 }
 
 
 void K3b::ActivePipe::readFrom( QIODevice* dev, bool close )
 {
     d->sourceIODevice = dev;
     d->closeSourceIODevice = close;
 }
 
 
 void K3b::ActivePipe::writeTo( QIODevice* dev, bool close )
 {
     d->sinkIODevice = dev;
     d->closeSinkIODevice = close;
 }
 
 
 qint64 K3b::ActivePipe::readData( char* data, qint64 max )
 {
     if( d->sourceIODevice ) {
         return d->sourceIODevice->read( data, max );
     }
 
     return -1;
 }
 
 
 qint64 K3b::ActivePipe::writeData( const char* data, qint64 max )
 {
     if( d->sinkIODevice ) {
         return d->sinkIODevice->write( data, max );
     }
     else
         return -1;
 }
 
 
 quint64 K3b::ActivePipe::bytesRead() const
 {
     return d->bytesRead;
 }
 
 
 quint64 K3b::ActivePipe::bytesWritten() const
 {
     return d->bytesWritten;
 }
 
 #include "moc_k3bactivepipe.cpp"