kpipeprocess.cpp
/*
* This file is part of the KDE libraries
* Copyright (c) 2001 Michael Goffioul <kdeprint@swing.be>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
**/
#include "kpipeprocess.h"
KPipeProcess::KPipeProcess(const QString& cmd, int mode)
: QFile()
{
m_pipe = NULL;
if (!cmd.isEmpty())
open(cmd,mode);
}
KPipeProcess::~KPipeProcess()
{
close();
}
bool KPipeProcess::open(const QString& cmd, int mode)
{
// close first if needed
close();
// check supported modes
if (mode != IO_ReadOnly && mode != IO_WriteOnly)
return false;
// create the pipe
m_pipe = popen(cmd.latin1(),(mode == IO_WriteOnly ? "w" : "r"));
if (m_pipe)
if (!QFile::open(mode,m_pipe))
close();
return (m_pipe != NULL);
}
void KPipeProcess::close()
{
if (m_pipe != NULL)
{
QFile::close();
/* pipe must be close to be sure the process is terminated */
pclose( m_pipe );
m_pipe = NULL;
}
}

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