gitclient.cpp

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#include "gitclient.h"
#include "gitutils.h"

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

#include <vcsbase/submitfilemodel.h>

#include <coreplugin/editormanager/editormanager.h>
#include <coreplugin/icore.h>
#include <coreplugin/vcsmanager.h>
#include <coreplugin/id.h>
#include <coreplugin/iversioncontrol.h>

#include <utils/hostosinfo.h>
#include <utils/qtcassert.h>
#include <utils/qtcprocess.h>
#include <utils/synchronousprocess.h>
#include <utils/fileutils.h>
#include <vcsbase/command.h>
#include <vcsbase/vcsbaseeditor.h>
#include <vcsbase/vcsbaseeditorparameterwidget.h>
#include <vcsbase/vcsbaseoutputwindow.h>
#include <vcsbase/vcsbaseplugin.h>

#include <diffeditor/diffeditor.h>
#include <diffeditor/diffshoweditor.h>
#include <diffeditor/diffeditorconstants.h>

#include <QCoreApplication>
#include <QDir>
#include <QFileInfo>
#include <QHash>
#include <QRegExp>
#include <QSignalMapper>
#include <QTime>

#include <QMessageBox>
#include <QPushButton>
#include <QToolButton>
#include <QTextCodec>

static const char GIT_DIRECTORY[] = ".git";
static const char graphLogFormatC[] = "%h %d %an %s %ci";
static const char HEAD[] = "HEAD";
static const char noColorOption[] = "--no-color";
static const char decorateOption[] = "--decorate";

namespace Git {
namespace Internal {

using VcsBase::VcsBasePlugin;

class GitDiffHandler : public QObject
{
    Q_OBJECT

public:
    enum RevisionType {
        WorkingTree,
        Index,
        Other
    };

    struct Revision {
        Revision() : type(WorkingTree) { }
        Revision(RevisionType t) : type(t) { }
        Revision(RevisionType t, const QString &i) : type(t), id(i) { }
        RevisionType type;
        QString id; // can be sha or HEAD
        QString infoText() const
        {
            switch (type) {
            case WorkingTree: return tr("Working tree");
            case Index:       return tr("Index");
            default:          return id;
            }
        }
    };

    GitDiffHandler(DiffEditor::DiffEditor *editor,
                   const QString &gitPath,
                   const QString &workingDirectory,
                   const QProcessEnvironment &environment,
                   int timeout);

    // index -> working tree
    void diffFile(const QString &fileName);
    // stagedFileNames:   HEAD -> index
    // unstagedFileNames: index -> working tree
    void diffFiles(const QStringList &stagedFileNames, const QStringList &unstagedFileNames);
    // index -> working tree
    void diffProjects(const QStringList &projectPaths);
    // index -> working tree
    void diffRepository();
    // branch HEAD -> working tree
    void diffBranch(const QString &branchName);
    // id^ -> id
    void show(const QString &id);

private slots:
    void slotShowDescriptionReceived(const QString &data);
    void slotFileListReceived(const QString &fileList);
    void slotFileContentsReceived(const QString &contents);

private:
    void collectShowDescription(const QString &id);
    void collectFilesList(const QStringList &additionalArguments);
    void prepareForCollection();
    void collectFilesContents();
    void feedEditor();
    QString workingTreeContents(const QString &fileName) const;

    QPointer<DiffEditor::DiffEditor> m_editor;
    const QString m_gitPath;
    const QString m_workingDirectory;
    const QProcessEnvironment m_processEnvironment;
    const int m_timeout;
    const QString m_waitMessage;

    struct RevisionRange {
        RevisionRange() { }
        RevisionRange(const Revision &b, const Revision &e) : begin(b), end(e) { }
        Revision begin;
        Revision end;
    };

    // filename, revision range
    QMap<QString, QList<RevisionRange> > m_requestedRevisionRanges;
    // filename, revision, dummy
    QMap<QString, QMap<Revision, bool> > m_pendingRevisions;
    // filename, revision, contents
    QMap<QString, QMap<Revision, QString> > m_collectedRevisions;

    RevisionRange m_requestedRevisionRange;
};

inline bool operator<(const GitDiffHandler::Revision &rev1, const GitDiffHandler::Revision &rev2)
{
    if (rev1.type != rev2.type)
        return rev1.type < rev2.type;
    return rev1.id < rev2.id;
}

GitDiffHandler::GitDiffHandler(DiffEditor::DiffEditor *editor,
               const QString &gitPath,
               const QString &workingDirectory,
               const QProcessEnvironment &environment,
               int timeout)
    : m_editor(editor),
      m_gitPath(gitPath),
      m_workingDirectory(workingDirectory),
      m_processEnvironment(environment),
      m_timeout(timeout),
      m_waitMessage(tr("Waiting for data..."))
{
}

void GitDiffHandler::diffFile(const QString &fileName)
{
    m_requestedRevisionRange = RevisionRange(
                Revision(Index),
                Revision(WorkingTree));

    collectFilesList(QStringList() << QLatin1String("--") << fileName);
}