Git: Factor out resolving of bin directory on Windows

Change-Id: Ifbafa0f5cb8329faedfd1da3674b87e46001acc3
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/git/gerrit/gerritparameters.cpp

@@ -73,14 +73,9 @@ static inline QString detectSsh()
     if (!ssh.isEmpty())
         return ssh;
     if (Utils::HostOsInfo::isWindowsHost()) { // Windows: Use ssh.exe from git if it cannot be found.
-        const QString git = GerritPlugin::gitBinary();
-        if (!git.isEmpty()) {
-            // Is 'git\cmd' in the path (folder containing .bats)?
-            QString path = QFileInfo(git).absolutePath();
-            if (path.endsWith(QLatin1String("cmd"), Qt::CaseInsensitive))
-                path.replace(path.size() - 3, 3, QLatin1String("bin"));
-            ssh = path + QLatin1Char('/') + QLatin1String(defaultSshC);
-        }
+        Utils::FileName path = GerritPlugin::gitBinDirectory();
+        if (!path.isEmpty())
+            ssh = path.appendPath(QLatin1String(defaultSshC)).toString();
     }
     return ssh;
 }

src/plugins/git/gerrit/gerritplugin.cpp

@@ -399,6 +399,11 @@ QString GerritPlugin::gitBinary()
     return git;
 }
 
+Utils::FileName GerritPlugin::gitBinDirectory()
+{
+    return gitClient()->gitBinDirectory();
+}
+
 // Find the branch of a repository.
 QString GerritPlugin::branch(const QString &repository)
 {

src/plugins/git/gerrit/gerritplugin.h

@@ -30,6 +30,8 @@
 #ifndef GERRIT_INTERNAL_GERRITPLUGIN_H
 #define GERRIT_INTERNAL_GERRITPLUGIN_H
 
+#include <utils/fileutils.h>
+
 #include <QObject>
 #include <QPointer>
 #include <QSharedPointer>
@@ -62,6 +64,7 @@ public:
     bool initialize(Core::ActionContainer *ac);
 
     static QString gitBinary();
+    static Utils::FileName gitBinDirectory();
     static QString branch(const QString &repository);
     void addToLocator(Core::CommandLocator *locator);
     void push(const QString &topLevel);

src/plugins/git/gitclient.cpp

@@ -2636,6 +2636,24 @@ bool GitClient::launchGitGui(const QString &workingDirectory) {
     return success;
 }
 
+Utils::FileName GitClient::gitBinDirectory()
+{
+    const QString git = gitBinaryPath();
+    if (git.isEmpty())
+        return Utils::FileName();
+
+    // Is 'git\cmd' in the path (folder containing .bats)?
+    QString path = QFileInfo(git).absolutePath();
+    // Git for Windows (msysGit) has git and gitk redirect executables in {setup dir}/cmd
+    // and the real binaries are in {setup dir}/bin. If cmd is configured in PATH
+    // or in Git settings, return bin instead.
+    if (Utils::HostOsInfo::isWindowsHost()
+            && path.endsWith(QLatin1String("/cmd"), Utils::HostOsInfo::fileNameCaseSensitivity())) {
+        path.replace(path.size() - 3, 3, QLatin1String("bin"));
+    }
+    return Utils::FileName::fromString(path);
+}
+
 QString GitClient::gitBinaryPath(bool *ok, QString *errorMessage) const
 {
     return settings()->gitBinaryPath(ok, errorMessage);

src/plugins/git/gitclient.h

@@ -35,6 +35,8 @@
 
 #include <coreplugin/editormanager/ieditor.h>
 
+#include <utils/fileutils.h>
+
 #include <QFutureSynchronizer>
 #include <QObject>
 #include <QString>
@@ -315,6 +317,7 @@ public:
     void launchGitK(const QString &workingDirectory, const QString &fileName);
     void launchGitK(const QString &workingDirectory) { launchGitK(workingDirectory, QString()); }
     bool launchGitGui(const QString &workingDirectory);
+    Utils::FileName gitBinDirectory();
 
     void launchRepositoryBrowser(const QString &workingDirectory);