tikhomirov@64: /*
tikhomirov@64:  * Copyright (c) 2011 TMate Software Ltd
tikhomirov@64:  *  
tikhomirov@64:  * This program is free software; you can redistribute it and/or modify
tikhomirov@64:  * it under the terms of the GNU General Public License as published by
tikhomirov@64:  * the Free Software Foundation; version 2 of the License.
tikhomirov@64:  *
tikhomirov@64:  * This program is distributed in the hope that it will be useful,
tikhomirov@64:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@64:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@64:  * GNU General Public License for more details.
tikhomirov@64:  *
tikhomirov@64:  * For information on how to redistribute this software under
tikhomirov@64:  * the terms of a license other than GNU General Public License
tikhomirov@64:  * contact TMate Software at support@svnkit.com
tikhomirov@64:  */
tikhomirov@64: package org.tmatesoft.hg.core;
tikhomirov@64: 
tikhomirov@64: /**
tikhomirov@64:  * Identify repository files (not String nor io.File). Convenient for pattern matching. Memory-friendly.
tikhomirov@64:  * 
tikhomirov@64:  * @author Artem Tikhomirov
tikhomirov@64:  * @author TMate Software Ltd.
tikhomirov@64:  */
tikhomirov@64: public final class Path implements CharSequence, Comparable<Path>/*Cloneable? - although clone for paths make no sense*/{
tikhomirov@64: //	private String[] segments;
tikhomirov@64: //	private int flags; // dir, unparsed
tikhomirov@64: 	private String path;
tikhomirov@64: 	
tikhomirov@64: 	/*package-local*/Path(String p) {
tikhomirov@64: 		path = p;
tikhomirov@64: 	}
tikhomirov@64: 
tikhomirov@64: 	public int length() {
tikhomirov@64: 		return path.length();
tikhomirov@64: 	}
tikhomirov@64: 
tikhomirov@64: 	public char charAt(int index) {
tikhomirov@64: 		return path.charAt(index);
tikhomirov@64: 	}
tikhomirov@64: 
tikhomirov@64: 	public CharSequence subSequence(int start, int end) {
tikhomirov@64: 		// new Path if start-end matches boundaries of any subpath
tikhomirov@64: 		return path.substring(start, end);
tikhomirov@64: 	}
tikhomirov@64: 	
tikhomirov@64: 	@Override
tikhomirov@64: 	public String toString() {
tikhomirov@64: 		return path; // CharSequence demands toString() impl
tikhomirov@64: 	}
tikhomirov@64: 
tikhomirov@64: 	public int compareTo(Path o) {
tikhomirov@64: 		return path.compareTo(o.path);
tikhomirov@64: 	}
tikhomirov@64: 	
tikhomirov@64: 	@Override
tikhomirov@64: 	public boolean equals(Object obj) {
tikhomirov@64: 		if (obj != null && getClass() == obj.getClass()) {
tikhomirov@64: 			return this == obj || path.equals(((Path) obj).path);
tikhomirov@64: 		}
tikhomirov@64: 		return false;
tikhomirov@64: 	}
tikhomirov@64: 	@Override
tikhomirov@64: 	public int hashCode() {
tikhomirov@64: 		return path.hashCode();
tikhomirov@64: 	}
tikhomirov@64: 
tikhomirov@64: 	public static Path create(String path) {
tikhomirov@64: 		if (path == null) {
tikhomirov@64: 			throw new IllegalArgumentException();
tikhomirov@64: 		}
tikhomirov@77: 		if (path.indexOf('\\') != -1) {
tikhomirov@77: 			throw new IllegalArgumentException();
tikhomirov@77: 		}
tikhomirov@64: 		Path rv = new Path(path);
tikhomirov@64: 		return rv;
tikhomirov@64: 	}
tikhomirov@64: 	public interface Matcher {
tikhomirov@64: 		public boolean accept(Path path);
tikhomirov@64: 	}
tikhomirov@64: }