Initial import

1 files changed, 150 insertions, 0 deletions

diff --git a/src/fileimporterexternal.cpp b/src/fileimporterexternal.cpp
new file mode 100644
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--- /dev/null
+++ b/src/fileimporterexternal.cpp
@@ -0,0 +1,150 @@
+/***************************************************************************
+*   Copyright (C) 2004-2009 by Thomas Fischer                             *
+*   fischer@unix-ag.uni-kl.de                                             *
+*                                                                         *
+*   This program is free software; you can redistribute it and/or modify  *
+*   it under the terms of the GNU General Public License as published by  *
+*   the Free Software Foundation; either version 2 of the License, or     *
+*   (at your option) any later version.                                   *
+*                                                                         *
+*   This program is distributed in the hope that it will be useful,       *
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+*   GNU General Public License for more details.                          *
+*                                                                         *
+*   You should have received a copy of the GNU General Public License     *
+*   along with this program; if not, write to the                         *
+*   Free Software Foundation, Inc.,                                       *
+*   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+***************************************************************************/
+#include <qprocess.h>
+#include <qwaitcondition.h>
+#include <qapplication.h>
+#include <qbuffer.h>
+
+#include <fileimporterbibtex.h>
+#include "fileimporterexternal.h"
+
+namespace BibTeX
+{
+
+    FileImporterExternal::FileImporterExternal( Importer importer, File::FileFormat fileformat )
+            : FileImporter(), m_importer( importer ), m_fileformat( fileformat )
+    {
+        wc = new QWaitCondition();
+    }
+
+
+    FileImporterExternal::~FileImporterExternal()
+    {
+        delete wc;
+    }
+
+    File* FileImporterExternal::load( QIODevice *iodevice )
+    {
+        m_mutex.lock();
+        File * result = NULL;
+        QBuffer buffer;
+
+        if ( fetchInput( iodevice, buffer ) )
+        {
+            buffer.open( IO_ReadOnly );
+            FileImporter * bibtexImporter = new FileImporterBibTeX();
+            result = bibtexImporter->load( &buffer );
+            buffer.close();
+            delete bibtexImporter;
+        }
+
+        m_mutex.unlock();
+        return result;
+    }
+
+    void FileImporterExternal::cancel()
+    {
+        if ( process != NULL )
+            process->kill();
+    }
+
+    bool FileImporterExternal::fetchInput( QIODevice *input, QBuffer &output )
+    {
+        bool result = FALSE;
+
+        QString commandLine;
+        switch ( m_fileformat )
+        {
+        default:
+            return FALSE;
+        }
+        QStringList args = QStringList::split( ' ', commandLine );
+
+        output.open( IO_WriteOnly );
+        writeTo = new QTextStream( &output );
+        writeTo->setEncoding( QTextStream::UnicodeUTF8 );
+
+        QApplication::setOverrideCursor( Qt::waitCursor );
+
+        process = new QProcess( args );
+        connect( process, SIGNAL( processExited() ), this, SLOT( slotProcessExited() ) );
+        connect( process, SIGNAL( readyReadStdout() ), this, SLOT( slotReadProcessOutput() ) );
+        connect( process, SIGNAL( readyReadStderr() ), this, SLOT( slotReadProcessOutput() ) );
+        connect( process, SIGNAL( wroteToStdin() ), this, SLOT( slotWroteToStdin() ) );
+
+        if ( process->start() )
+        {
+            while ( !process->isRunning() )
+            {
+                wc->wait( 250 );
+                qApp->processEvents();
+            }
+            qApp->processEvents();
+            QByteArray buf = input->readAll();
+            process->writeToStdin( buf );
+            qApp->processEvents();
+            while ( process->isRunning() )
+            {
+                wc->wait( 250 );
+                qApp->processEvents();
+            }
+
+            result = process->normalExit();
+        }
+
+        disconnect( process, SIGNAL( wroteToStdin() ), this, SLOT( slotWroteToStdin() ) );
+        disconnect( process, SIGNAL( readyReadStdout() ), this, SLOT( slotReadProcessOutput() ) );
+        disconnect( process, SIGNAL( readyReadStderr() ), this, SLOT( slotReadProcessOutput() ) );
+        disconnect( process, SIGNAL( processExited() ), this, SLOT( slotProcessExited() ) );
+        delete( process );
+        process = NULL;
+        delete writeTo;
+        writeTo = NULL;
+        output.close();
+
+        QApplication::restoreOverrideCursor();
+        return result;
+    }
+
+    void FileImporterExternal::slotProcessExited()
+    {
+        wc->wakeAll();
+    }
+
+    void FileImporterExternal::slotReadProcessOutput()
+    {
+        if ( writeTo != NULL )
+            while ( process->canReadLineStdout() )
+            {
+                QString line = process->readLineStdout();
+                //                 qDebug( "line=%s", line.latin1() );
+                ( *writeTo ) << line.latin1();
+                ( *writeTo ) << endl;
+            }
+    }
+
+    void FileImporterExternal::slotWroteToStdin()
+    {
+        process->closeStdin();
+    }
+
+
+}
+#include "fileimporterexternal.moc"