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annotate src/org/tmatesoft/hg/internal/EncodeDirPathHelper.java @ 675:a20121a2bba6

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 18 Jul 2013 18:02:36 +0200
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1 /*
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2 * Copyright (c) 2013 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.internal;
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18
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19 import java.util.regex.Matcher;
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20 import java.util.regex.Pattern;
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21
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22 import org.tmatesoft.hg.util.PathRewrite;
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23
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24 /**
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25 * <blockquote cite="http://mercurial.selenic.com/wiki/FileFormats#data.2F">Directory names ending in .i or .d have .hg appended</blockquote>
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26 *
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27 * @see http://mercurial.selenic.com/wiki/FileFormats#data.2F
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28 * @author Artem Tikhomirov
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29 * @author TMate Software Ltd.
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30 */
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31 final class EncodeDirPathHelper implements PathRewrite {
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32 private final Pattern suffix2replace;
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33
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34 public EncodeDirPathHelper() {
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35 suffix2replace = Pattern.compile("\\.([id]|hg)/");
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36 }
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37
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38 public CharSequence rewrite(CharSequence p) {
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39 Matcher suffixMatcher = suffix2replace.matcher(p);
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40 CharSequence path;
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41 // Matcher.replaceAll, but without extra toString
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42 boolean found = suffixMatcher.find();
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43 if (found) {
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44 StringBuffer sb = new StringBuffer(p.length() + 20);
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45 do {
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46 suffixMatcher.appendReplacement(sb, ".$1.hg/");
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47 } while (found = suffixMatcher.find());
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48 suffixMatcher.appendTail(sb);
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49 path = sb;
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50 } else {
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51 path = p;
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52 }
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53 return path;
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54 }
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55
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56 }