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1   package org.apache.velocity.runtime.parser.node;
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.io.IOException;
23  import java.io.Writer;
24  
25  import org.apache.velocity.context.InternalContextAdapter;
26  import org.apache.velocity.exception.TemplateInitException;
27  import org.apache.velocity.runtime.parser.Parser;
28  import org.apache.velocity.runtime.parser.Token;
29  
30  /**
31   * This node holds the "Textblock" data which should not be interpreted by Velocity.
32   *
33   * Textblocks are marked in Velocity with #[[content here]]# notation. Velocity
34   * will output everything between the markers and does not attempt to parse it in any way.
35   */
36  public class ASTTextblock extends SimpleNode
37  {
38      public static final String START = "#[[";
39      public static final String END = "]]#";
40      private char[] ctext;
41  
42      /**
43       * @param id
44       */
45      public ASTTextblock(int id)
46      {
47          super(id);
48      }
49  
50      /**
51       * @param p
52       * @param id
53       */
54      public ASTTextblock(Parser p, int id)
55      {
56          super(p, id);
57      }
58  
59      /**
60       * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.node.ParserVisitor, java.lang.Object)
61       */
62      public Object jjtAccept(ParserVisitor visitor, Object data)
63      {
64          return visitor.visit(this, data);
65      }
66  
67      /**
68       * @see org.apache.velocity.runtime.parser.node.SimpleNode#init(org.apache.velocity.context.InternalContextAdapter, java.lang.Object)
69       */
70      public Object init( InternalContextAdapter context, Object data)
71      throws TemplateInitException
72      {
73          Token t = getFirstToken();
74          
75          String text = t.image;
76          
77          // t.image is in format: #% <string> %#
78          // we must strip away the hash tags
79          text = text.substring(START.length(), text.length() - END.length());
80  
81          ctext = text.toCharArray();
82          return data;
83      }
84  
85      /**
86       * @see org.apache.velocity.runtime.parser.node.SimpleNode#render(org.apache.velocity.context.InternalContextAdapter, java.io.Writer)
87       */
88      public boolean render( InternalContextAdapter context, Writer writer)
89          throws IOException
90      {
91          writer.write(ctext);
92          return true;
93      }
94  }