1 package org.codehaus.mojo.properties;
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.util.Properties;
23 import java.util.Enumeration;
24
25 import org.apache.maven.plugin.MojoExecutionException;
26 import org.apache.maven.plugin.MojoFailureException;
27
28 /**
29 * Writes project properties to a file.
30 *
31 * @author <a href="mailto:zarars@gmail.com">Zarar Siddiqi</a>
32 * @version $Id: WriteProjectProperties.java 9747 2009-05-20 13:27:44Z mark $
33 * @goal write-project-properties
34 */
35 public class WriteProjectProperties extends AbstractWritePropertiesMojo
36 {
37 public void execute()
38 throws MojoExecutionException, MojoFailureException
39 {
40 validateOutputFile();
41 Properties projProperties = new Properties();
42 projProperties.putAll( project.getProperties() );
43
44 Properties systemProperties = System.getProperties();
45
46 //allow system properties to over write key/value found in maven properties
47 Enumeration enumeration = systemProperties.keys();
48 while ( enumeration.hasMoreElements() )
49 {
50 String key = (String) enumeration.nextElement();
51 String value = systemProperties.getProperty( key );
52 if ( projProperties.get( key ) != null )
53 {
54 projProperties.put( key, value );
55 }
56
57 }
58
59 writeProperties( projProperties, outputFile );
60 }
61 }