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Git: Refactor branch/HEAD access

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Change-Id: I0c9955737033c0f839ac1f6ea053fecc20c24d48
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
This commit is contained in:
Orgad Shaneh
2012-10-21 15:12:21 +02:00
committed by Orgad Shaneh
parent 4eedda04d3
commit a1e3a5de9e
3 changed files with 44 additions and 61 deletions
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73
src/plugins/git/gitclient.cpp
View File

@@ -1098,64 +1098,43 @@ static inline QString msgCannotDetermineBranch(const QString &workingDirectory,
return GitClient::tr("Cannot retrieve branch of \"%1\": %2").arg(QDir::toNativeSeparators(workingDirectory), why);
}
// Retrieve head revision/branch
bool GitClient::synchronousTopRevision(const QString &workingDirectory, QString *revision,
QString *branch, QString *errorMessageIn)
// Retrieve head branch
QString GitClient::synchronousBranch(const QString &workingDirectory)
{
QByteArray outputTextData;
QStringList arguments;
arguments << QLatin1String("symbolic-ref") << QLatin1String("--short") << QLatin1String("HEAD");
// if HEAD is detached, the command is expected to fail.
if (!fullySynchronousGit(workingDirectory, arguments, &outputTextData))
return QString();
QString branch = commandOutputFromLocal8Bit(outputTextData);
branch.remove(QLatin1Char('\n'));
return branch;
}
// Retrieve head revision
QString GitClient::synchronousTopRevision(const QString &workingDirectory, QString *errorMessageIn)
{
QByteArray outputTextData;
QByteArray errorText;
QStringList arguments;
QString errorMessage;
do {
// get revision
if (revision) {
revision->clear();
arguments << QLatin1String("log") << QLatin1String(noColorOption)
<< QLatin1String("--max-count=1") << QLatin1String("--pretty=format:%H");
arguments << QLatin1String("rev-parse") << QLatin1String("HEAD");
if (!fullySynchronousGit(workingDirectory, arguments, &outputTextData, &errorText)) {
errorMessage = tr("Cannot retrieve top revision of \"%1\": %2").arg(QDir::toNativeSeparators(workingDirectory), commandOutputFromLocal8Bit(errorText));
break;
errorMessage = tr("Cannot retrieve top revision of \"%1\": %2")
.arg(QDir::toNativeSeparators(workingDirectory), commandOutputFromLocal8Bit(errorText));
return QString();
}
*revision = commandOutputFromLocal8Bit(outputTextData);
revision->remove(QLatin1Char('\n'));
} // revision desired
// get branch
if (branch) {
branch->clear();
arguments.clear();
arguments << QLatin1String("branch") << QLatin1String(noColorOption);
if (!fullySynchronousGit(workingDirectory, arguments, &outputTextData, &errorText)) {
errorMessage = msgCannotDetermineBranch(workingDirectory, commandOutputFromLocal8Bit(errorText));
break;
}
/* parse output for current branch: \code
* master
branch2
\endcode */
const QString branchPrefix = QLatin1String("* ");
foreach(const QString &line, commandOutputLinesFromLocal8Bit(outputTextData)) {
if (line.startsWith(branchPrefix)) {
*branch = line;
branch->remove(0, branchPrefix.size());
break;
}
}
if (branch->isEmpty()) {
errorMessage = msgCannotDetermineBranch(workingDirectory,
QString::fromLatin1("Internal error: Failed to parse output: %1").arg(commandOutputFromLocal8Bit(outputTextData)));
break;
}
} // branch
} while (false);
const bool failed = (revision && revision->isEmpty()) || (branch && branch->isEmpty());
if (failed && !errorMessage.isEmpty()) {
if (errorMessageIn) {
QString revision = commandOutputFromLocal8Bit(outputTextData);
revision.remove(QLatin1Char('\n'));
if (revision.isEmpty() && !errorMessage.isEmpty()) {
if (errorMessageIn)
*errorMessageIn = errorMessage;
} else {
else
outputWindow()->appendError(errorMessage);
}
}
return !failed;
return revision;
}
// Format an entry in a one-liner for selection list using git log.

6
src/plugins/git/gitclient.h
View File

@@ -160,8 +160,8 @@ public:
QString synchronousShortDescription(const QString &workingDirectory, const QString &revision);
QString synchronousShortDescription(const QString &workingDirectory, const QString &revision,
const QString &format);
bool synchronousTopRevision(const QString &workingDirectory, QString *revision = 0,
QString *branch = 0, QString *errorMessage = 0);
QString synchronousBranch(const QString &workingDirectory);
QString synchronousTopRevision(const QString &workingDirectory, QString *errorMessage = 0);
bool cloneRepository(const QString &directory, const QByteArray &url);
QString vcsGetRepositoryURL(const QString &directory);
@@ -266,7 +266,7 @@ private:
bool fullySynchronousGit(const QString &workingDirectory,
const QStringList &arguments,
QByteArray* outputText,
QByteArray* errorText,
QByteArray* errorText = 0,
bool logCommandToWindow = true) const;
// Synchronous git execution using Utils::SynchronousProcess, with

16
src/plugins/git/gitversioncontrol.cpp
View File

@@ -161,10 +161,10 @@ QString GitVersionControl::vcsCreateSnapshot(const QString &topLevel)
return stashMessage;
if (repositoryUnchanged) {
// For unchanged repository state: return identifier + top revision
QString topRevision;
QString branch;
if (!m_client->synchronousTopRevision(topLevel, &topRevision, &branch))
QString topRevision = m_client->synchronousTopRevision(topLevel);
if (topRevision.isEmpty())
return QString();
QString branch = m_client->synchronousBranch(topLevel);
const QChar colon = QLatin1Char(':');
QString id = QLatin1String(stashRevisionIdC);
id += colon;
@@ -201,9 +201,13 @@ bool GitVersionControl::vcsRestoreSnapshot(const QString &topLevel, const QStrin
break;
const QString branch = tokens.at(1);
const QString revision = tokens.at(2);
success = m_client->synchronousReset(topLevel)
&& m_client->synchronousCheckoutBranch(topLevel, branch)
&& m_client->synchronousCheckoutFiles(topLevel, QStringList(), revision);
success = m_client->synchronousReset(topLevel);
if (success && !branch.isEmpty()) {
success = m_client->synchronousCheckoutBranch(topLevel, branch) &&
m_client->synchronousCheckoutFiles(topLevel, QStringList(), revision);
} else {
success = m_client->synchronousCheckoutBranch(topLevel, revision);
}
} else {
// Restore stash if it can be resolved.
QString stashName;