Add QCommandLineParser::showVersion(), similar to showHelp().

Change-Id: I1782c226ee8c457a68eb9ae9948a2a6a700d7a52
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

1 files changed, 18 insertions, 4 deletions

diff --git a/src/corelib/tools/qcommandlineparser.cpp b/src/corelib/tools/qcommandlineparser.cpp
index c860b4d155..0f5d9a6827 100644
--- a/src/corelib/tools/qcommandlineparser.cpp
+++ b/src/corelib/tools/qcommandlineparser.cpp
@@ -423,10 +423,8 @@ void QCommandLineParser::process(const QStringList &arguments)
         ::exit(EXIT_FAILURE);
     }
 
-    if (d->builtinVersionOption && isSet(QStringLiteral("version"))) {
-        printf("%s %s\n", qPrintable(QCoreApplication::applicationName()), qPrintable(QCoreApplication::applicationVersion()));
-        ::exit(EXIT_SUCCESS);
-    }
+    if (d->builtinVersionOption && isSet(QStringLiteral("version")))
+        showVersion();
 
     if (d->builtinHelpOption && isSet(QStringLiteral("help")))
         showHelp(EXIT_SUCCESS);
@@ -816,6 +814,22 @@ QStringList QCommandLineParser::unknownOptionNames() const
 }
 
 /*!
+    Displays the version information from QCoreApplication::applicationVersion(),
+    and exits the application.
+    This is automatically triggered by the --version option, but can also
+    be used to display the version when not using process().
+    The exit code is set to EXIT_SUCCESS (0).
+
+    \sa addVersionOption()
+    \since 5.4
+*/
+Q_NORETURN void QCommandLineParser::showVersion()
+{
+    fprintf(stdout, "%s %s\n", qPrintable(QCoreApplication::applicationName()), qPrintable(QCoreApplication::applicationVersion()));
+    ::exit(EXIT_SUCCESS);
+}
+
+/*!
     Displays the help information, and exits the application.
     This is automatically triggered by the --help option, but can also
     be used to display the help when the user is not invoking the