1 package org.apache.maven.artifact.ant;
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 org.apache.tools.ant.PropertyHelper;
23
24 /**
25 * POM Property Delegate, for Ant 1.8.0.
26 *
27 * @since maven-ant-tasks 2.1.1
28 */
29 class POMPropertyEvaluator
30 extends POMPropertyHelper
31 implements PropertyHelper.PropertyEvaluator
32 {
33
34 public static void register( Pom pom, PropertyHelper propertyHelper )
35 {
36 propertyHelper.add( new POMPropertyEvaluator( pom ) );
37 }
38
39 private POMPropertyEvaluator( Pom pom )
40 {
41 super( pom );
42 }
43
44 public Object evaluate( String property, PropertyHelper propertyHelper )
45 {
46 String prefix = pom.antId + ".";
47
48 if ( !property.startsWith( prefix ) )
49 {
50 return null;
51 }
52
53 try
54 {
55 // else handle the property resolution
56 String expression = property.substring( prefix.length() );
57 return getPOMValue( "project." + expression );
58 }
59 catch ( Exception ex )
60 {
61 ex.printStackTrace();
62 return null;
63 }
64 }
65
66 }