1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.wiki.filters;
24  
25  import com.liferay.portal.kernel.util.StringMaker;
26  import com.liferay.portal.kernel.util.StringUtil;
27  
28  import java.util.regex.Matcher;
29  import java.util.regex.Pattern;
30  
31  import org.stringtree.factory.AbstractStringFetcher;
32  
33  /**
34   * <a href="CodeBlock.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Raymond Augé
37   *
38   */
39  public class CodeBlock extends AbstractStringFetcher {
40  
41      public Object getObject(String content) {
42          StringMaker sm = new StringMaker();
43  
44          Matcher matcher = _pattern.matcher(content);
45  
46          if (matcher.matches()) {
47              sm.append("<div class=\"wiki-code\">");
48  
49              String[] lines = matcher.group(1).split("\\n");
50  
51              for (int i = 0; i < lines.length; i++) {
52                  if (i != 0) {
53                      sm.append("<br />");
54                  }
55  
56                  String translation = StringUtil.replace(
57                      lines[i],
58                      new String[] {
59                          "\\s",
60                          "<",
61                          ">",
62                          "=",
63                          "\"",
64                          "'",
65                          "\t"
66                      },
67                      new String[] {
68                          "&nbsp;",
69                          "&lt;",
70                          "&gt;",
71                          "&#x003D;",
72                          "&#0034;",
73                          "&#0039;",
74                          "&nbsp;&#8594;&nbsp;"
75                      });
76  
77                  int padlength =
78                      String.valueOf(lines.length).length() -
79                      String.valueOf(i + 1).length();
80  
81                  String padding = "";
82  
83                  for (int j = 0; j < padlength; j++) {
84                      padding += "&#0149;";
85                  }
86  
87                  sm.append("<span class=\"code-lines\">");
88                  sm.append(padding + (i + 1));
89                  sm.append("</span>");
90  
91                  sm.append(translation);
92              }
93  
94              sm.append("</div>");
95  
96              content = sm.toString();
97          }
98  
99          return content;
100     }
101 
102     private static final Pattern _pattern = Pattern.compile(
103         "\\[code\\]((.|\\n)*?)\\[/code\\]",
104         Pattern.MULTILINE | Pattern.UNIX_LINES);
105 
106 }