gitclient.cpp

/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
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**
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** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** GNU Lesser General Public License Usage
**
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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#include "gitclient.h"
#include "gitcommand.h"
#include "gitutils.h"

#include "commitdata.h"
#include "gitconstants.h"
#include "gitplugin.h"
#include "gitsubmiteditor.h"
#include "gitversioncontrol.h"

#include <coreplugin/actionmanager/actionmanager.h>
#include <coreplugin/coreconstants.h>
#include <coreplugin/editormanager/editormanager.h>
#include <coreplugin/icore.h>
#include <coreplugin/messagemanager.h>
#include <coreplugin/progressmanager/progressmanager.h>
#include <coreplugin/uniqueidmanager.h>
#include <coreplugin/filemanager.h>
#include <coreplugin/iversioncontrol.h>

#include <texteditor/itexteditor.h>
#include <utils/qtcassert.h>
#include <utils/synchronousprocess.h>
#include <vcsbase/vcsbaseeditor.h>
#include <vcsbase/vcsbaseoutputwindow.h>

#include <projectexplorer/environment.h>

#include <QtCore/QRegExp>
#include <QtCore/QTemporaryFile>
#include <QtCore/QTime>
#include <QtCore/QFileInfo>
#include <QtCore/QDir>
#include <QtCore/QSignalMapper>

#include <QtGui/QMainWindow> // for msg box parent
#include <QtGui/QMessageBox>
#include <QtGui/QPushButton>

static const char *const kGitDirectoryC = ".git";
static const char *const kBranchIndicatorC = "# On branch";

static inline QString msgServerFailure()
{
    return Git::Internal::GitClient::tr(
"Note that the git plugin for QtCreator is not able to interact with the server "
"so far. Thus, manual ssh-identification etc. will not work.");
}

inline Core::IEditor* locateEditor(const Core::ICore *core, const char *property, const QString &entry)
{
    foreach (Core::IEditor *ed, core->editorManager()->openedEditors())
        if (ed->file()->property(property).toString() == entry)
            return ed;
    return 0;
}

// Return converted command output, remove '\r' read on Windows
static inline QString commandOutputFromLocal8Bit(const QByteArray &a)
{
    QString output = QString::fromLocal8Bit(a);
    output.remove(QLatin1Char('\r'));
    return output;
}

// Return converted command output split into lines
static inline QStringList commandOutputLinesFromLocal8Bit(const QByteArray &a)
{
    QString output = commandOutputFromLocal8Bit(a);
    const QChar newLine = QLatin1Char('\n');
    if (output.endsWith(newLine))
        output.truncate(output.size() - 1);
    if (output.isEmpty())
        return QStringList();
    return output.split(newLine);
}

namespace Git {
namespace Internal {

static inline QString msgRepositoryNotFound(const QString &dir)
{
    return GitClient::tr("Unable to determine the repository for %1.").arg(dir);
}

static inline QString msgParseFilesFailed()
{
    return  GitClient::tr("Unable to parse the file output.");
}

// Format a command for the status window
static QString formatCommand(const QString &binary, const QStringList &args)
{
    //: Executing: <executable> <arguments>
    return GitClient::tr("Executing: %1 %2\n").arg(binary, args.join(QString(QLatin1Char(' '))));
}

// ---------------- GitClient

const char *GitClient::stashNamePrefix = "stash@{";

GitClient::GitClient(GitPlugin* plugin)
  : m_msgWait(tr("Waiting for data...")),
    m_plugin(plugin),
    m_core(Core::ICore::instance()),
    m_repositoryChangedSignalMapper(0),
    m_cachedGitVersion(0),
    m_hasCachedGitVersion(false)
{
    if (QSettings *s = m_core->settings()) {
        m_settings.fromSettings(s);
        m_binaryPath = m_settings.gitBinaryPath();
    }
}

GitClient::~GitClient()
{
}

const char *GitClient::noColorOption = "--no-color";

QString GitClient::findRepositoryForFile(const QString &fileName)
{
    const QString gitDirectory = QLatin1String(kGitDirectoryC);
    const QFileInfo info(fileName);
    QDir dir = info.absoluteDir();
    do {
        if (dir.entryList(QDir::AllDirs|QDir::Hidden).contains(gitDirectory))
            return dir.absolutePath();
    } while (dir.cdUp());

    return QString();
}

QString GitClient::findRepositoryForDirectory(const QString &dir)
{
    const QString gitDirectory = QLatin1String(kGitDirectoryC);
    QDir directory(dir);
    do {
        if (directory.entryList(QDir::AllDirs|QDir::Hidden).contains(gitDirectory))
            return directory.absolutePath();
    } while (directory.cdUp());

    return QString();
}

/* Create an editor associated to VCS output of a source file/directory
 * (using the file's codec). Makes use of a dynamic property to find an
 * existing instance and to reuse it (in case, say, 'git diff foo' is
 * already open). */
VCSBase::VCSBaseEditor
    *GitClient::createVCSEditor(const QString &id,
                                QString title,
                                // Source file or directory
                                const QString &source,
                                bool setSourceCodec,
                                // Dynamic property and value to identify that editor
                                const char *registerDynamicProperty,
                                const QString &dynamicPropertyValue) const
{
    VCSBase::VCSBaseEditor *rc = 0;
    Core::IEditor* outputEditor = locateEditor(m_core, registerDynamicProperty, dynamicPropertyValue);
    if (outputEditor) {
         // Exists already
        outputEditor->createNew(m_msgWait);
        rc = VCSBase::VCSBaseEditor::getVcsBaseEditor(outputEditor);
        QTC_ASSERT(rc, return 0);
    } else {
        // Create new, set wait message, set up with source and codec
        outputEditor = m_core->editorManager()->openEditorWithContents(id, &title, m_msgWait);
        outputEditor->file()->setProperty(registerDynamicProperty, dynamicPropertyValue);