PropertyOutputStream


1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one or more
3    *  contributor license agreements.  See the NOTICE file distributed with
4    *  this work for additional information regarding copyright ownership.
5    *  The ASF licenses this file to You under the Apache License, Version 2.0
6    *  (the "License"); you may not use this file except in compliance with
7    *  the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   *
17   */
18  
19  package org.apache.tools.ant.util;
20  
21  import java.io.ByteArrayOutputStream  ;
22  
23  import org.apache.tools.ant.Project;
24  
25  /**
26   * Exception thrown when an attempt is made to get an OutputStream
27   * from an immutable Resource.
28   * @since Ant 1.7
29   */
30  public class PropertyOutputStream extends ByteArrayOutputStream   {
31      private Project project;
32      private String   property;
33      private boolean trim;
34  
35      /**
36       * Construct a new PropertyOutputStream for the specified Project
37       * and property name, trimming the property value.
38       * @param p the associated Ant Project.
39       * @param s the String property name.
40       */
41      public PropertyOutputStream(Project p, String   s) {
42          this(p, s, true);
43      }
44  
45      /**
46       * Construct a new PropertyOutputStream for
47       * the specified Project, property name, and trim mode.
48       * @param p the associated Ant Project.
49       * @param s the String property name.
50       * @param b the boolean trim mode.
51       */
52      public PropertyOutputStream(Project p, String   s, boolean b) {
53          project = p;
54          property = s;
55          trim = b;
56      }
57  
58      /**
59       * Close the PropertyOutputStream, storing the property.
60       */
61      public void close() {
62          if (project != null && property != null) {
63              String   s = new String  (toByteArray());
64              project.setNewProperty(property, trim ? s.trim() : s);
65          }
66      }
67  
68  }
69  
70
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