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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.GregorianCalendar;
25  import java.util.Map;
26  import java.util.TimeZone;
27  
28  /**
29   * MavenBuildTimestamp
30   */
31  public class MavenBuildTimestamp
32  {
33      // ISO 8601-compliant timestamp for machine readability
34      public static final String DEFAULT_BUILD_TIMESTAMP_FORMAT = "yyyy-MM-dd'T'HH:mm:ss'Z'";
35  
36      public static final String BUILD_TIMESTAMP_FORMAT_PROPERTY = "maven.build.timestamp.format";
37  
38      public static final TimeZone DEFAULT_BUILD_TIME_ZONE = TimeZone.getTimeZone( "Etc/UTC" );
39  
40      private String formattedTimestamp;
41  
42      public MavenBuildTimestamp()
43      {
44          this( new Date() );
45      }
46  
47      public MavenBuildTimestamp( Date time )
48      {
49          this( time, DEFAULT_BUILD_TIMESTAMP_FORMAT );
50      }
51  
52      public MavenBuildTimestamp( Date time, Map<String, String> properties )
53      {
54          this( time, properties != null ? properties.get( BUILD_TIMESTAMP_FORMAT_PROPERTY ) : null );
55      }
56  
57      public MavenBuildTimestamp( Date time, String timestampFormat )
58      {
59          if ( timestampFormat == null )
60          {
61              timestampFormat = DEFAULT_BUILD_TIMESTAMP_FORMAT;
62          }
63          if ( time == null )
64          {
65              time = new Date();
66          }
67          SimpleDateFormat dateFormat = new SimpleDateFormat( timestampFormat );
68          dateFormat.setCalendar( new GregorianCalendar() );
69          dateFormat.setTimeZone( DEFAULT_BUILD_TIME_ZONE );
70          formattedTimestamp = dateFormat.format( time );
71      }
72  
73      public String formattedTimestamp()
74      {
75          return formattedTimestamp;
76      }
77  }