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1
9 package org.jboss.portal.format.parser.entity;
10
11 import org.jboss.portal.format.parser.AbstractParser;
12 import org.jboss.portal.format.parser.TextEvent;
13
14 import java.util.regex.Pattern  ;
15 import java.util.regex.Matcher ;
16
17
23 public class XML1_0CharacterEntityReferenceParser extends AbstractParser
24 {
25
26 private final TextEvent textEvent = new TextEvent();
27 private final CharacterEntityReferenceEvent cere = new CharacterEntityReferenceEvent();
28
29 private static Pattern pattern = Pattern.compile("&#(?:(?:x[0-9a-fA-F]{1,4})|(?:[0-9]{1,5}));");
30
31 public void parse(char[] chars, int offset, int length)
32 {
33 CharSequence seq = new CharSequenceImpl(chars, offset, length);
34 Matcher matcher = pattern.matcher(seq);
35 int from = offset;
36 while (matcher.find())
37 {
38 int to = matcher.start();
39 textEvent.setText(chars, from, to - from);
40 handler.handle(textEvent);
41 from = matcher.end();
42 cere.setText(chars, to, from - to);
43 handler.handle(cere);
44 }
45 if (from < offset + length)
46 {
47 textEvent.setText(chars, from, offset + length - from);
48 handler.handle(textEvent);
49 }
50 }
51
52 private static class CharSequenceImpl implements CharSequence
53 {
54 private final char[] chars;
55 private final int offset;
56 private final int length;
57 public CharSequenceImpl(char[] chars, int offset, int length)
58 {
59 this.chars = chars;
60 this.offset = offset;
61 this.length = length;
62 }
63 public int length()
64 {
65 return length;
66 }
67 public char charAt(int index)
68 {
69 return chars[offset + index];
70 }
71 public CharSequence subSequence(int start, int end)
72 {
73 return new CharSequenceImpl(chars, start, end - start);
74 }
75 }
76 }
77 |
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