tikhomirov@616: /*
tikhomirov@616:  * Copyright (c) 2013 TMate Software Ltd
tikhomirov@616:  *  
tikhomirov@616:  * This program is free software; you can redistribute it and/or modify
tikhomirov@616:  * it under the terms of the GNU General Public License as published by
tikhomirov@616:  * the Free Software Foundation; version 2 of the License.
tikhomirov@616:  *
tikhomirov@616:  * This program is distributed in the hope that it will be useful,
tikhomirov@616:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@616:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@616:  * GNU General Public License for more details.
tikhomirov@616:  *
tikhomirov@616:  * For information on how to redistribute this software under
tikhomirov@616:  * the terms of a license other than GNU General Public License
tikhomirov@616:  * contact TMate Software at support@hg4j.com
tikhomirov@616:  */
tikhomirov@616: package org.tmatesoft.hg.internal;
tikhomirov@616: 
tikhomirov@616: import java.util.regex.Matcher;
tikhomirov@616: import java.util.regex.Pattern;
tikhomirov@616: 
tikhomirov@616: import org.tmatesoft.hg.util.PathRewrite;
tikhomirov@616: 
tikhomirov@616: /**
tikhomirov@616:  * <blockquote cite="http://mercurial.selenic.com/wiki/FileFormats#data.2F">Directory names ending in .i or .d have .hg appended</blockquote>
tikhomirov@616:  *  
tikhomirov@616:  * @see http://mercurial.selenic.com/wiki/FileFormats#data.2F
tikhomirov@616:  * @author Artem Tikhomirov
tikhomirov@616:  * @author TMate Software Ltd.
tikhomirov@616:  */
tikhomirov@616: final class EncodeDirPathHelper implements PathRewrite {
tikhomirov@616: 	private final Pattern suffix2replace;
tikhomirov@616: 	
tikhomirov@616: 	public EncodeDirPathHelper() {
tikhomirov@616: 		suffix2replace = Pattern.compile("\\.([id]|hg)/");
tikhomirov@616: 	}
tikhomirov@616: 
tikhomirov@616: 	public CharSequence rewrite(CharSequence p) {
tikhomirov@616: 		Matcher suffixMatcher = suffix2replace.matcher(p);
tikhomirov@616: 		CharSequence path;
tikhomirov@616: 		// Matcher.replaceAll, but without extra toString
tikhomirov@616: 		boolean found = suffixMatcher.find();
tikhomirov@616: 		if (found) {
tikhomirov@616: 			StringBuffer sb = new StringBuffer(p.length()  + 20);
tikhomirov@616: 			do {
tikhomirov@616: 				suffixMatcher.appendReplacement(sb, ".$1.hg/");
tikhomirov@616: 			} while (found = suffixMatcher.find());
tikhomirov@616: 			suffixMatcher.appendTail(sb);
tikhomirov@616: 			path = sb;
tikhomirov@616: 		} else {
tikhomirov@616: 			path = p;
tikhomirov@616: 		}
tikhomirov@616: 		return path;
tikhomirov@616: 	}
tikhomirov@616: 
tikhomirov@616: }