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1   package org.apache.maven.model.interpolation;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.text.SimpleDateFormat;
23  import java.util.Date;
24  import java.util.Properties;
25  import java.util.TimeZone;
26  
27  public class MavenBuildTimestamp
28  {
29      // ISO 8601-compliant timestamp for machine readability
30      public static final String DEFAULT_BUILD_TIMESTAMP_FORMAT = "yyyy-MM-dd'T'HH:mm:ss'Z'";
31  
32      public static final String BUILD_TIMESTAMP_FORMAT_PROPERTY = "maven.build.timestamp.format";
33  
34      private String formattedTimestamp;
35  
36      public MavenBuildTimestamp()
37      {
38          this( new Date() );
39      }
40  
41      public MavenBuildTimestamp( Date time )
42      {
43          this( time, DEFAULT_BUILD_TIMESTAMP_FORMAT );
44      }
45  
46      public MavenBuildTimestamp( Date time, Properties properties )
47      {
48          this( time, properties != null ? properties.getProperty( BUILD_TIMESTAMP_FORMAT_PROPERTY ) : null );
49      }
50  
51      public MavenBuildTimestamp( Date time, String timestampFormat )
52      {
53          if ( timestampFormat == null )
54          {
55              timestampFormat = DEFAULT_BUILD_TIMESTAMP_FORMAT;
56          }
57          if ( time == null )
58          {
59              time = new Date();
60          }
61          SimpleDateFormat dateFormat = new SimpleDateFormat( timestampFormat );
62          dateFormat.setTimeZone( TimeZone.getTimeZone( "UTC" ) );
63          formattedTimestamp = dateFormat.format( time );
64      }
65  
66      public String formattedTimestamp()
67      {
68          return formattedTimestamp;
69      }
70  }