1   /**
2    * Copyright (c) 2000-2009 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.StringUtil;
26  
27  import java.util.regex.Matcher;
28  import java.util.regex.Pattern;
29  
30  import org.stringtree.factory.AbstractStringFetcher;
31  
32  /**
33   * <a href="CodeBlock.java.html"><b><i>View Source</i></b></a>
34   *
35   * @author Raymond Augé
36   *
37   */
38  public class CodeBlock extends AbstractStringFetcher {
39  
40      public Object getObject(String content) {
41          StringBuilder sb = new StringBuilder();
42  
43          Matcher matcher = _pattern.matcher(content);
44  
45          if (matcher.matches()) {
46              sb.append("<div class=\"wiki-code\">");
47  
48              String[] lines = matcher.group(1).split("\\n");
49  
50              for (int i = 0; i < lines.length; i++) {
51                  if (i != 0) {
52                      sb.append("<br />");
53                  }
54  
55                  String translation = StringUtil.replace(
56                      lines[i],
57                      new String[] {
58                          "\\s",
59                          "<",
60                          ">",
61                          "=",
62                          "\"",
63                          "'",
64                          "\t"
65                      },
66                      new String[] {
67                          "&nbsp;",
68                          "&lt;",
69                          "&gt;",
70                          "&#x003D;",
71                          "&#0034;",
72                          "&#0039;",
73                          "&nbsp;&#8594;&nbsp;"
74                      });
75  
76                  int padlength =
77                      String.valueOf(lines.length).length() -
78                      String.valueOf(i + 1).length();
79  
80                  String padding = "";
81  
82                  for (int j = 0; j < padlength; j++) {
83                      padding += "&#0149;";
84                  }
85  
86                  sb.append("<span class=\"code-lines\">");
87                  sb.append(padding + (i + 1));
88                  sb.append("</span>");
89  
90                  sb.append(translation);
91              }
92  
93              sb.append("</div>");
94  
95              content = sb.toString();
96          }
97  
98          return content;
99      }
100 
101     private static Pattern _pattern = Pattern.compile(
102         "\\[code\\]((.|\\n)*?)\\[/code\\]",
103         Pattern.MULTILINE | Pattern.UNIX_LINES);
104 
105 }