src/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     m_timeout(30000)
  27 {
  28 }
  29
  30 AbstractCommand::ReturnCodes GitRunner::start(WaitCondition condition, Fail fail)
  31 {
  32     Q_ASSERT(condition <= WaitUntilReadyForWrite);
  33     if (Logger::verbosity() >= Logger::Debug) {
  34         Logger::debug() << "command:  git";
  35         foreach(QString arg, m_arguments)
  36             Logger::debug() << " " << arg;
  37         Logger::debug() << endl;
  38         Logger::debug().flush();
  39     }
  40
  41     if (condition == WaitForStandardOutput)
  42         m_process->setReadChannel(QProcess::StandardOutput);
  43     else if (condition == WaitForStandardError) {
  44         m_process->setReadChannel(QProcess::StandardError);
  45         condition = WaitForStandardOutput;
  46     }
  47
  48     QIODevice::OpenMode mode = QIODevice::ReadOnly;
  49     if (condition == WaitUntilReadyForWrite)
  50         mode |= QIODevice::WriteOnly;
  51
  52     m_process->start(QLatin1String("git"), m_arguments, mode);
  53     if ((condition == WaitForStandardOutput && !m_process->waitForReadyRead())
  54         || (condition == WaitUntilFinished && !m_process->waitForFinished())
  55         || (condition == WaitUntilReadyForWrite && !m_process->waitForStarted())) {
  56         if (m_process->state() != QProcess::NotRunning) { // time out
  57             Logger::error() << "ERROR: the backend (git) fails to start, timing out" << endl;
  58             m_process->kill();
  59             return AbstractCommand::GitTimedOut;
  60         }
  61         if (m_process->exitStatus() == QProcess::NormalExit) {
  62             if (m_process->exitCode() != 0) {
  63                 if (fail == WarnOnFail)
  64                     Logger::error() << "ERROR: Failed calling git" << endl; // we may have to change this to debug later.
  65                 Logger::debug() << "   we got return code:" << m_process->exitCode() << endl;
  66                 return AbstractCommand::GitFailed;
  67             }
  68             return AbstractCommand::Ok;
  69         }
  70         Logger::error() << "ERROR: the backend (git) crashed" << endl;
  71         return AbstractCommand::GitCrashed;
  72     }
  73     if (m_process->exitCode() != 0) {
  74         Logger::debug() << "   we got return code:" << m_process->exitCode() << endl;
  75         return AbstractCommand::GitFailed;
  76     }
  77     return AbstractCommand::Ok;
  78 }
  79
  80 void GitRunner::setArguments(const QStringList &arguments)
  81 {
  82     m_arguments = arguments;
  83 }