kitaev@213: /*
kitaev@213:  * Copyright (c) 2010-2011 TMate Software Ltd
kitaev@213:  *  
kitaev@213:  * This program is free software; you can redistribute it and/or modify
kitaev@213:  * it under the terms of the GNU General Public License as published by
kitaev@213:  * the Free Software Foundation; version 2 of the License.
kitaev@213:  *
kitaev@213:  * This program is distributed in the hope that it will be useful,
kitaev@213:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
kitaev@213:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
kitaev@213:  * GNU General Public License for more details.
kitaev@213:  *
kitaev@213:  * For information on how to redistribute this software under
kitaev@213:  * the terms of a license other than GNU General Public License
kitaev@213:  * contact TMate Software at support@hg4j.com
kitaev@213:  */
kitaev@213: package org.tmatesoft.hg.console;
kitaev@213: 
kitaev@213: import static org.tmatesoft.hg.repo.HgRepository.TIP;
kitaev@213: 
kitaev@213: import java.io.IOException;
kitaev@213: import java.io.OutputStream;
kitaev@213: import java.nio.ByteBuffer;
kitaev@213: 
kitaev@213: import org.tmatesoft.hg.repo.HgDataFile;
kitaev@213: import org.tmatesoft.hg.repo.HgRepository;
kitaev@213: import org.tmatesoft.hg.util.ByteChannel;
kitaev@213: 
kitaev@213: 
kitaev@213: /**
kitaev@213:  * @author Artem Tikhomirov
kitaev@213:  * @author TMate Software Ltd.
kitaev@213:  */
kitaev@213: public class Cat {
kitaev@213: 
kitaev@213: 	public static void main(String[] args) throws Exception {
kitaev@213: 		Options cmdLineOpts = Options.parse(args);
kitaev@213: 		HgRepository hgRepo = cmdLineOpts.findRepository();
kitaev@213: 		if (hgRepo.isInvalid()) {
kitaev@213: 			System.err.printf("Can't find repository in: %s\n", hgRepo.getLocation());
kitaev@213: 			return;
kitaev@213: 		}
kitaev@213: 		int rev = cmdLineOpts.getSingleInt(TIP, "-r", "--rev");
kitaev@213: 		OutputStreamChannel out = new OutputStreamChannel(System.out);
kitaev@213: 		for (String fname : cmdLineOpts.getList("")) {
kitaev@213: 			System.out.println(fname);
kitaev@213: 			HgDataFile fn = hgRepo.getFileNode(fname);
kitaev@213: 			if (fn.exists()) {
kitaev@213: 				fn.contentWithFilters(rev, out);
kitaev@213: 				System.out.println();
kitaev@213: 			} else {
kitaev@213: 				System.out.printf("%s not found!\n", fname);
kitaev@213: 			}
kitaev@213: 		}
kitaev@213: 	}
kitaev@213: 
kitaev@213: 	private static class OutputStreamChannel implements ByteChannel {
kitaev@213: 
kitaev@213: 		private final OutputStream stream;
kitaev@213: 
kitaev@213: 		public OutputStreamChannel(OutputStream out) {
kitaev@213: 			stream = out;
kitaev@213: 		}
kitaev@213: 
kitaev@213: 		public int write(ByteBuffer buffer) throws IOException {
kitaev@213: 			int count = buffer.remaining();
kitaev@213: 			while(buffer.hasRemaining()) {
kitaev@213: 				stream.write(buffer.get());
kitaev@213: 			}
kitaev@213: 			return count;
kitaev@213: 		}
kitaev@213: 	}
kitaev@213: }