Mercurial > hg4j
view src/org/tmatesoft/hg/internal/PathGlobMatcher.java @ 519:934037edbea0
Few toString() implementations to ease debug
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
---|---|
date | Thu, 20 Dec 2012 20:21:59 +0100 |
parents | 528b6780a8bd |
children |
line wrap: on
line source
/* * Copyright (c) 2011 TMate Software Ltd * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * For information on how to redistribute this software under * the terms of a license other than GNU General Public License * contact TMate Software at support@hg4j.com */ package org.tmatesoft.hg.internal; import java.util.regex.PatternSyntaxException; import org.tmatesoft.hg.util.Path; /** * * @author Artem Tikhomirov * @author TMate Software Ltd. */ public class PathGlobMatcher implements Path.Matcher { private final PathRegexpMatcher delegate; /** * * @param globPatterns * @throws NullPointerException if argument is null * @throws IllegalArgumentException if any of the patterns is not valid */ public PathGlobMatcher(String... globPatterns) { String[] regexp = new String[globPatterns.length]; //deliberately let fail with NPE int i = 0; for (String s : globPatterns) { regexp[i++] = glob2regexp(s); } try { delegate = new PathRegexpMatcher(regexp); } catch (PatternSyntaxException ex) { throw new IllegalArgumentException(ex); } } // HgIgnore.glob2regex is similar, but IsIgnore solves slightly different task // (need to match partial paths, e.g. for glob 'bin' shall match not only 'bin' folder, but also any path below it, // which is not generally the case private static String glob2regexp(String glob) { // TODO TESTS NEEDED!!! int end = glob.length() - 1; if (glob.length() > 2 && glob.charAt(end) == '*' && glob.charAt(end - 1) == '.') { end-=2; } boolean needLineEndMatch = true;//glob.charAt(end) != '*'; // while (end > 0 && glob.charAt(end) == '*') end--; // remove trailing * that are useless for Pattern.find() StringBuilder sb = new StringBuilder(end*2); // if (glob.charAt(0) != '*') { sb.append('^'); // } for (int i = 0; i <= end; i++) { char ch = glob.charAt(i); if (ch == '*') { if (i < end && glob.charAt(i+1) == '*') { // any char, including path segment separator sb.append(".*?"); i++; if (i < end && glob.charAt(i+1) == '/') { sb.append("/?"); i++; } } else { // just path segments sb.append("[^/]*?"); } continue; } else if (ch == '?') { sb.append("[^/]"); continue; } else if (ch == '.' || ch == '\\') { sb.append('\\'); } sb.append(ch); } if (needLineEndMatch) { sb.append('$'); } return sb.toString(); } public boolean accept(Path path) { return delegate.accept(path); } }