kpipeprocess.cpp

/*
 *  This file is part of the KDE libraries
 *  Copyright (c) 2001 Michael Goffioul <tdeprint@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 TQString& cmd, int mode)
: TQFile()
{
    m_pipe = NULL;
    if (!cmd.isEmpty())
        open(cmd,mode);
}
 
KPipeProcess::~KPipeProcess()
{
    close();
}
 
bool KPipeProcess::open(const TQString& 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 (!TQFile::open(mode,m_pipe))
            close();
    return (m_pipe != NULL);
}
 
void KPipeProcess::close()
{
    if (m_pipe != NULL)
    {
        TQFile::close();
        /* pipe must be close to be sure the process is terminated */
        pclose( m_pipe );
        m_pipe = NULL;
    }
}