tdeprint
kpipeprocess.cpp
00001 /* 00002 * This file is part of the KDE libraries 00003 * Copyright (c) 2001 Michael Goffioul <tdeprint@swing.be> 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Library General Public 00007 * License version 2 as published by the Free Software Foundation. 00008 * 00009 * This library is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 * Library General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU Library General Public License 00015 * along with this library; see the file COPYING.LIB. If not, write to 00016 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 00017 * Boston, MA 02110-1301, USA. 00018 **/ 00019 00020 #include "kpipeprocess.h" 00021 00022 KPipeProcess::KPipeProcess(const TQString& cmd, int mode) 00023 : TQFile() 00024 { 00025 m_pipe = NULL; 00026 if (!cmd.isEmpty()) 00027 open(cmd,mode); 00028 } 00029 00030 KPipeProcess::~KPipeProcess() 00031 { 00032 close(); 00033 } 00034 00035 bool KPipeProcess::open(const TQString& cmd, int mode) 00036 { 00037 // close first if needed 00038 close(); 00039 // check supported modes 00040 if (mode != IO_ReadOnly && mode != IO_WriteOnly) 00041 return false; 00042 00043 // create the pipe 00044 m_pipe = popen(cmd.latin1(),(mode == IO_WriteOnly ? "w" : "r")); 00045 if (m_pipe) 00046 if (!TQFile::open(mode,m_pipe)) 00047 close(); 00048 return (m_pipe != NULL); 00049 } 00050 00051 void KPipeProcess::close() 00052 { 00053 if (m_pipe != NULL) 00054 { 00055 TQFile::close(); 00056 /* pipe must be close to be sure the process is terminated */ 00057 pclose( m_pipe ); 00058 m_pipe = NULL; 00059 } 00060 }