1 files changed, 60 insertions, 0 deletions
diff --git a/src/main/java/com/google/gerrit/pgm/Version.java b/src/main/java/com/google/gerrit/pgm/Version.java
new file mode 100644
index 0000000000..0bac4d0788
--- /dev/null
+++ b/src/main/java/com/google/gerrit/pgm/Version.java
@@ -0,0 +1,60 @@
+// Copyright 2009 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.pgm;
+
+import com.google.gerrit.client.GerritVersion;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
+
+/** Display the version of Gerrit. */
+public class Version {
+  private static String version;
+
+  public static String getVersion() {
+    if (version == null) {
+      final Properties p = new Properties();
+      final InputStream in =
+          GerritVersion.class.getResourceAsStream(GerritVersion.class
+              .getSimpleName()
+              + ".properties");
+      if (in == null) {
+        return null;
+      }
+      try {
+        try {
+          p.load(in);
+        } finally {
+          in.close();
+        }
+        version = p.getProperty("version");
+      } catch (IOException e) {
+        return null;
+      }
+    }
+    return version;
+  }
+
+  public static void main(final String[] argv) {
+    final String v = getVersion();
+    if (v == null) {
+      System.err.println("fatal: version unavailable");
+      System.exit(1);
+    }
+    System.out.println("gerrit version " + v);
+  }
+}