Mercurial > public > html2wiki

comparison src/org/nwoca/ssdt/tools/html2wiki/ReplaceTransformer.java @ 11:8f23347884c0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Deal with double dashes surrounded by words. ReplaceTransformer can now replace specific group.
author smith@nwoca.org
date Fri, 28 Jan 2011 13:57:25 -0500
parents 22ed6d93442c
children
comparison
equal deleted inserted replaced
10:2fb5084b1564 11:8f23347884c0
4 4
5 class ReplaceTransformer implements Transformer { 5 class ReplaceTransformer implements Transformer {
6 6
7 private Pattern replace; 7 private Pattern replace;
8 private String replacement; 8 private String replacement;
9 9 private int replaceGroup;
10
11 /**
12 * ReplaceTransform to replace the entire regex.
13 *
14 * @param regex
15 * @param replacement
16 */
10 public ReplaceTransformer(String regex, String replacement) { 17 public ReplaceTransformer(String regex, String replacement) {
18 this(regex,replacement,0);
19 }
20 /**
21 * ReplaceTransform to replace a specific group in the Regex.
22 *
23 * @param regex
24 * @param replacement
25 * @param replaceGroup group to replace
26 */
27
28 public ReplaceTransformer(String regex, String replacement, int replaceGroup) {
11 replace = Pattern.compile(regex); 29 replace = Pattern.compile(regex);
12 this.replacement = replacement; 30 this.replacement = replacement;
13 31 this.replaceGroup = replaceGroup;
14 } 32 }
33
15 public void apply(StringBuffer buffer) { 34 public void apply(StringBuffer buffer) {
16 Matcher matcher = replace.matcher(buffer); 35 Matcher matcher = replace.matcher(buffer);
17 36
18 boolean first = true; 37 int start = 0;
19 while (matcher.find(first ? 0 : matcher.start() + replacement.length())) { 38 while (matcher.find(start)) {
20 buffer.replace(matcher.start(),matcher.end(),replacement); 39 if (replaceGroup == 0) {
21 first = false; 40 buffer.replace(matcher.start(),matcher.end(),replacement);
41 start = matcher.start() + replacement.length();
42 } else {
43 String t = "";
44 for (int i = 1; i < matcher.groupCount() + 1 ; i++) {
45 if (i != replaceGroup) {
46 t += matcher.group(i);
47 } else {
48 t += replacement;
49 }
50 }
51 buffer.replace(matcher.start(),matcher.end(),t);
52 start = matcher.start() + t.length();
53 }
22 } 54 }
23 } 55 }
24 56
25 public String toString() { 57 public String toString() {
26 return "Replace: " + replace.pattern() + " with " +replacement; 58 return "Replace: " + replace.pattern() + " with " +replacement;