Line data    Source code

       1             : // Copyright (C) 2009 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.common;
      16             : 
      17             : import static java.nio.charset.StandardCharsets.UTF_8;
      18             : 
      19             : import com.google.common.annotations.VisibleForTesting;
      20             : import com.google.common.flogger.FluentLogger;
      21             : import java.io.BufferedReader;
      22             : import java.io.IOException;
      23             : import java.io.InputStream;
      24             : import java.io.InputStreamReader;
      25             : 
      26             : public class Version {
      27         153 :   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
      28             : 
      29             :   @VisibleForTesting static final String DEV = "(dev)";
      30             : 
      31             :   private static final String VERSION;
      32             : 
      33             :   public static String getVersion() {
      34         153 :     return VERSION;
      35             :   }
      36             : 
      37             :   static {
      38         153 :     VERSION = loadVersion();
      39         153 :   }
      40             : 
      41             :   private static String loadVersion() {
      42         153 :     try (InputStream in = Version.class.getResourceAsStream("Version")) {
      43         153 :       if (in == null) {
      44         152 :         return DEV;
      45             :       }
      46           1 :       try (BufferedReader r = new BufferedReader(new InputStreamReader(in, UTF_8))) {
      47           1 :         String vs = r.readLine();
      48           1 :         if (vs != null && vs.startsWith("v")) {
      49           1 :           vs = vs.substring(1);
      50             :         }
      51           1 :         if (vs != null && vs.isEmpty()) {
      52           0 :           vs = null;
      53             :         }
      54           1 :         return vs;
      55             :       }
      56         152 :     } catch (IOException e) {
      57           0 :       logger.atSevere().withCause(e).log("%s", e.getMessage());
      58           0 :       return "(unknown version)";
      59             :     }
      60             :   }
      61             : 
      62             :   private Version() {}
      63             : }