tikhomirov@17: /*
tikhomirov@72:  * Copyright (c) 2010-2011 TMate Software Ltd
tikhomirov@72:  *  
tikhomirov@72:  * This program is free software; you can redistribute it and/or modify
tikhomirov@72:  * it under the terms of the GNU General Public License as published by
tikhomirov@72:  * the Free Software Foundation; version 2 of the License.
tikhomirov@72:  *
tikhomirov@72:  * This program is distributed in the hope that it will be useful,
tikhomirov@72:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@72:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@72:  * GNU General Public License for more details.
tikhomirov@72:  *
tikhomirov@72:  * For information on how to redistribute this software under
tikhomirov@72:  * the terms of a license other than GNU General Public License
tikhomirov@102:  * contact TMate Software at support@hg4j.com
tikhomirov@1:  */
tikhomirov@72: package org.tmatesoft.hg.console;
tikhomirov@1: 
tikhomirov@143: import static org.tmatesoft.hg.repo.HgRepository.TIP;
tikhomirov@143: 
tikhomirov@143: import java.io.OutputStream;
tikhomirov@143: import java.nio.ByteBuffer;
tikhomirov@143: 
tikhomirov@74: import org.tmatesoft.hg.repo.HgDataFile;
tikhomirov@74: import org.tmatesoft.hg.repo.HgRepository;
tikhomirov@143: import org.tmatesoft.hg.util.ByteChannel;
tikhomirov@74: 
tikhomirov@1: 
tikhomirov@1: /**
tikhomirov@72:  * @author Artem Tikhomirov
tikhomirov@72:  * @author TMate Software Ltd.
tikhomirov@1:  */
tikhomirov@1: public class Cat {
tikhomirov@1: 
tikhomirov@1: 	public static void main(String[] args) throws Exception {
tikhomirov@74: 		Options cmdLineOpts = Options.parse(args);
tikhomirov@74: 		HgRepository hgRepo = cmdLineOpts.findRepository();
tikhomirov@1: 		if (hgRepo.isInvalid()) {
tikhomirov@1: 			System.err.printf("Can't find repository in: %s\n", hgRepo.getLocation());
tikhomirov@1: 			return;
tikhomirov@1: 		}
tikhomirov@143: 		int rev = cmdLineOpts.getSingleInt(TIP, "-r", "--rev");
tikhomirov@143: 		OutputStreamChannel out = new OutputStreamChannel(System.out);
tikhomirov@143: 		for (String fname : cmdLineOpts.getList("")) {
tikhomirov@5: 			System.out.println(fname);
tikhomirov@5: 			HgDataFile fn = hgRepo.getFileNode(fname);
tikhomirov@5: 			if (fn.exists()) {
tikhomirov@143: 				fn.content(rev, out, true);
tikhomirov@143: 				System.out.println();
tikhomirov@5: 			} else {
tikhomirov@143: 				System.out.printf("%s not found!\n", fname);
tikhomirov@5: 			}
tikhomirov@5: 		}
tikhomirov@1: 	}
tikhomirov@143: 
tikhomirov@143: 	private static class OutputStreamChannel implements ByteChannel {
tikhomirov@143: 
tikhomirov@143: 		private final OutputStream stream;
tikhomirov@143: 
tikhomirov@143: 		public OutputStreamChannel(OutputStream out) {
tikhomirov@143: 			stream = out;
tikhomirov@143: 		}
tikhomirov@143: 
tikhomirov@143: 		public int write(ByteBuffer buffer) throws Exception {
tikhomirov@143: 			int count = buffer.remaining();
tikhomirov@143: 			while(buffer.hasRemaining()) {
tikhomirov@143: 				stream.write(buffer.get());
tikhomirov@143: 			}
tikhomirov@143: 			return count;
tikhomirov@143: 		}
tikhomirov@143: 	}
tikhomirov@1: }