Docjar: com/arranger/jarl/test/XMLPreProcessor.java

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Source code: com/arranger/jarl/test/XMLPreProcessor.java

1   package com.arranger.jarl.test;
2   
3   import junit.framework.TestCase;
4   import org.w3c.dom.Document;
5   
6   import java.io.File;
7   import java.util.regex.Pattern;
8   import java.util.regex.Matcher;
9   import java.util.Stack;
10  import java.util.Set;
11  import java.util.HashSet;
12  
13  import com.arranger.jarl.util.StringTools;
14  import com.arranger.jarl.util.IOUtil;
15  
16  /**
17   * XMLPreProcessor created on Mar 3, 2003
18   */
19  public class XMLPreProcessor extends TestCase {
20  
21      public void testInclude() throws Exception {
22  
23          String result = processText(new File("src/com/arranger/jarl/test/testDoc.xml"), new Stack());
24          System.out.println(result);
25  
26      }
27  
28      protected String processText(File file, Stack stack) throws Exception {
29          if (stack.contains(file)) {
30              throw new Exception("Recursive include of a file");
31          }
32          stack.push(file);
33  
34          String text = IOUtil.toString(file.getAbsolutePath());
35  
36          //look for <xml:include file='
37          Pattern pattern = Pattern.compile("<xml:include\\s+file=.+>");
38          Matcher matcher = pattern.matcher(text);
39  
40          StringBuffer buffer = new StringBuffer();
41          while (matcher.find()) {
42              String includeDirective = matcher.group();
43              String replacementText = replaceText(includeDirective, stack);
44              matcher.appendReplacement(buffer, replacementText);
45          }
46          matcher.appendTail(buffer);
47          stack.pop();
48          return buffer.toString();
49      }
50  
51      protected String replaceText(String includeDirective, Stack stack) throws Exception {
52          Pattern pattern = Pattern.compile("[a-zA-Z]+\\.xml");
53          Matcher matcher = pattern.matcher(includeDirective);
54          if (matcher.find()) {
55              String includedFile = matcher.group();
56  
57              if (!(includedFile.startsWith("/") || ":".equals(includedFile.substring(1, 2)))) {
58                  //fix up the included file
59                  File parentFile = (File)stack.peek();
60                  includedFile = StringTools.appendPath(parentFile.getParent(), includedFile);
61              }
62  
63              return processText(new File(includedFile), stack);
64          } else {
65              return null;
66          }
67      }
68  }