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1   /*
2    * Copyright 2002,2004 The Apache Software Foundation.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.commons.jelly.util;
17  
18  import org.apache.commons.jelly.Script;
19  import org.apache.commons.jelly.impl.CompositeTextScriptBlock;
20  import org.apache.commons.jelly.impl.ScriptBlock;
21  import org.apache.commons.jelly.impl.TextScript;
22  
23  /*** Contains static methods to help tag developers.
24   * @author Hans Gilde
25   *
26   */
27  public class TagUtils {
28      private TagUtils() {
29          
30      }
31  
32      /*** Trims the whitespace from a script and its children.
33       * 
34       */
35      public static void trimScript(Script body) {
36          synchronized(body) {
37              if ( body instanceof CompositeTextScriptBlock ) {
38                  CompositeTextScriptBlock block = (CompositeTextScriptBlock) body;
39                  block.trimWhitespace();
40              }
41              else
42              if ( body instanceof ScriptBlock ) {
43                  ScriptBlock block = (ScriptBlock) body;
44                  block.trimWhitespace();
45              }
46              else if ( body instanceof TextScript ) {
47                  TextScript textScript = (TextScript) body;
48                  textScript.trimWhitespace();
49              }
50          }
51      }
52  
53  }