GitRunner.cpp

   1 /*
   2  * This file is part of the vng project
   3  * Copyright (C) 2008 Thomas Zander <tzander@trolltech.com>
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18 #include "GitRunner.h"
  19 #include "Logger.h"
  20
  21 #include <QDebug>
  22
  23 GitRunner::GitRunner(QProcess &process, const QStringList &arguments)
  24     : m_process(&process),
  25     m_arguments(arguments)
  26 {
  27 }
  28
  29 AbstractCommand::ReturnCodes GitRunner::start(WaitCondition condition)
  30 {
  31     Q_ASSERT(condition <= WaitUntilReadyForWrite);
  32     if (Logger::verbosity() >= Logger::Debug) {
  33         Logger::debug() << "command:  git";
  34         foreach(QString arg, m_arguments)
  35             Logger::debug() << " " << arg;
  36         Logger::debug() << endl;
  37         Logger::debug().flush();
  38     }
  39
  40     if (condition == WaitForStandardOutput)
  41         m_process->setReadChannel(QProcess::StandardOutput);
  42     else if (condition == WaitForStandardError) {
  43         m_process->setReadChannel(QProcess::StandardError);
  44         condition = WaitForStandardOutput;
  45     }
  46
  47     QIODevice::OpenMode mode = QIODevice::ReadOnly;
  48     if (condition == WaitUntilReadyForWrite)
  49         mode |= QIODevice::WriteOnly;
  50
  51     m_process->start("git", m_arguments, mode);
  52     if (condition == WaitForStandardOutput && !m_process->waitForReadyRead()
  53         || condition == WaitUntilFinished && !m_process->waitForFinished()
  54         || condition == WaitUntilReadyForWrite && !m_process->waitForStarted()) {
  55         if (m_process->state() != QProcess::NotRunning) { // time out
  56             Logger::error() << "ERROR: the backend (git) fails to start, timing out" << endl;
  57             m_process->kill();
  58             return AbstractCommand::GitTimedOut;
  59         }
  60         if (m_process->exitStatus() == QProcess::NormalExit) {
  61             if (m_process->exitCode() != 0) {
  62                 Logger::error() << "ERROR: Failed calling git" << endl; // we may have to change this to debug later.
  63                 Logger::debug() << "   we got return code:" << m_process->exitCode() << endl;
  64                 return AbstractCommand::GitFailed;
  65             }
  66             return AbstractCommand::Ok;
  67         }
  68         Logger::error() << "ERROR: the backend (git) crashed" << endl;
  69         return AbstractCommand::GitCrashed;
  70     }
  71     if (m_process->exitCode() != 0) {
  72         Logger::debug() << "   we got return code:" << m_process->exitCode() << endl;
  73         return AbstractCommand::GitFailed;
  74     }
  75     return AbstractCommand::Ok;
  76 }
  77
  78 void GitRunner::setArguments(const QStringList &arguments)
  79 {
  80     m_arguments = arguments;
  81 }