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81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
/* This file is (c) 2008-2012 Konstantin Isakov <ikm@goldendict.org>
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* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
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#include <QDir>
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#include <QTimer>
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#include "externalviewer.hh"
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#include "parsecmdline.hh"
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#include "gddebug.hh"
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ExternalViewer::ExternalViewer( const char * data, int size,
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QString const & extension, QString const & viewerCmdLine_,
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QObject * parent)
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:
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QObject( parent ),
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tempFile( QDir::temp().filePath( QString( "gd-XXXXXXXX." ) + extension ) ),
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viewer( this ),
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viewerCmdLine( viewerCmdLine_ )
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{
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if ( !tempFile.open() || tempFile.write( data, size ) != size )
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throw exCantCreateTempFile();
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tempFileName = tempFile.fileName(); // For some reason it loses it after it was closed()
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#ifdef Q_OS_WIN32
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// Issue #239
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tempFileName = QDir::toNativeSeparators(tempFileName);
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#endif
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tempFile.close();
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GD_DPRINTF( "%s\n", tempFile.fileName().toLocal8Bit().data() );
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}
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void ExternalViewer::start()
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{
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connect( &viewer, SIGNAL( finished( int, QProcess::ExitStatus ) ),
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this, SLOT( deleteLater() ) );
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connect( &viewer, SIGNAL( errorOccurred( QProcess::ProcessError ) ),
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this, SLOT( deleteLater() ) );
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QStringList args = parseCommandLine( viewerCmdLine );
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if ( !args.isEmpty() )
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{
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QString program = args.first();
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args.pop_front();
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args.push_back( tempFileName );
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viewer.start( program, args, QIODevice::NotOpen );
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if ( !viewer.waitForStarted() )
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throw exCantRunViewer( viewerCmdLine.toUtf8().data() );
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}
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else
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throw exCantRunViewer( tr( "the viewer program name is empty" ).toUtf8().data() );
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}
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bool ExternalViewer::stop()
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{
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if( viewer.state() == QProcess::NotRunning )
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return true;
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viewer.terminate();
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QTimer::singleShot( 1000, &viewer, SLOT( kill() ) ); // In case terminate() fails.
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return false;
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}
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void ExternalViewer::stopSynchronously()
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{
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// This implementation comes straight from QProcess::~QProcess().
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if( viewer.state() == QProcess::NotRunning )
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return;
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viewer.kill();
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viewer.waitForFinished();
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}
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void stopAndDestroySynchronously( ExternalViewer * viewer )
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{
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if( !viewer )
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return;
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viewer->stopSynchronously();
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delete viewer;
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}
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