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comparison src/org/nwoca/ssdt/tools/html2wiki/ReflowTransformer.java @ 6:99f293bd507f

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Add "reflow" transformer to reflow paragraphs, list items, etc.
author smith@nwoca.org
date Thu, 27 Jan 2011 16:37:27 -0500
parents
children c1d94c623854
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5:d34f4d408ef9 6:99f293bd507f
1 package org.nwoca.ssdt.tools.html2wiki;
2
3 import java.util.regex.*;
4
5 class ReflowTransformer implements Transformer {
6
7 private Pattern[] patterns = {
8 Pattern.compile("(\\n<p>)(.*?)(\\n\\n|\\n<)", Pattern.MULTILINE + Pattern.DOTALL),
9 Pattern.compile("(<li>)(.*?)(</li>)", Pattern.MULTILINE + Pattern.DOTALL),
10 Pattern.compile("(<td>)([^<]*)(</td>)", Pattern.MULTILINE + Pattern.DOTALL)
11 };
12
13 /**
14 * Default transformer refolows paragraphs, li's and td's.
15 *
16 */
17 public ReflowTransformer() {
18 }
19
20 /**
21 * Create transformer with specific regexp.
22 *
23 * Regexp must provide three groups: (before)(textToReflow)(after).
24 *
25 * @param regexp
26 */
27 public ReflowTransformer(String regexp) {
28 patterns = new Pattern[]{
29 Pattern.compile(regexp, Pattern.MULTILINE + Pattern.DOTALL)
30 };
31 }
32
33 public void apply(StringBuffer buffer) {
34 for (Pattern pattern : patterns) {
35
36 System.out.println(" Reflowing: " + pattern);
37 Matcher matcher = pattern.matcher(buffer);
38
39 int start = 0;
40 while (matcher.find(start)) {
41 String temp = matcher.group(2);
42 temp = temp.replaceAll(" \\n", " ");
43 buffer.replace(matcher.start(), matcher.end(), matcher.group(1) + temp + matcher.group(3));
44 start = matcher.start() + matcher.group(1).length() + temp.length() + matcher.group(3).length() - 1;
45 }
46 }
47
48 }
49
50 public String toString() {
51 return "Reflowing block tags";
52 }
53 }