tikhomirov@384: /*
tikhomirov@384:  * Copyright (c) 2012 TMate Software Ltd
tikhomirov@384:  *  
tikhomirov@384:  * This program is free software; you can redistribute it and/or modify
tikhomirov@384:  * it under the terms of the GNU General Public License as published by
tikhomirov@384:  * the Free Software Foundation; version 2 of the License.
tikhomirov@384:  *
tikhomirov@384:  * This program is distributed in the hope that it will be useful,
tikhomirov@384:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@384:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@384:  * GNU General Public License for more details.
tikhomirov@384:  *
tikhomirov@384:  * For information on how to redistribute this software under
tikhomirov@384:  * the terms of a license other than GNU General Public License
tikhomirov@384:  * contact TMate Software at support@hg4j.com
tikhomirov@384:  */
tikhomirov@384: package org.tmatesoft.hg.tools;
tikhomirov@384: 
tikhomirov@384: import java.io.ByteArrayOutputStream;
tikhomirov@384: 
tikhomirov@384: import org.tmatesoft.hg.core.Nodeid;
tikhomirov@384: 
tikhomirov@384: /**
tikhomirov@384:  * Create binary manifest entry ready to write down into 00manifest.i
tikhomirov@384:  * <p>Usage:
tikhomirov@384:  * <pre>
tikhomirov@384:  *   ManifestEntryBuilder mb = new ManifestEntryBuilder();
tikhomirov@384:  *   mb.reset().add("file1", file1.getRevision(r1));
tikhomirov@384:  *   mb.add("file2", file2.getRevision(r2));
tikhomirov@384:  *   byte[] manifestRecordData = mb.build();
tikhomirov@384:  *   byte[] manifestRevlogHeader = buildRevlogHeader(..., sha1(parents, manifestRecordData), manifestRecordData.length);
tikhomirov@384:  *   manifestIndexOutputStream.write(manifestRevlogHeader);
tikhomirov@384:  *   manifestIndexOutputStream.write(manifestRecordData);
tikhomirov@384:  * </pre>
tikhomirov@384:  * 
tikhomirov@384:  * @author Artem Tikhomirov
tikhomirov@384:  * @author TMate Software Ltd.
tikhomirov@384:  */
tikhomirov@384: public class ManifestEntryBuilder {
tikhomirov@384: 	private ByteArrayOutputStream buffer = new ByteArrayOutputStream();
tikhomirov@384: 
tikhomirov@384: 	
tikhomirov@384: 	public ManifestEntryBuilder reset() {
tikhomirov@384: 		buffer.reset();
tikhomirov@384: 		return this;
tikhomirov@384: 	}
tikhomirov@384: 	public ManifestEntryBuilder add(String fname, Nodeid revision) {
tikhomirov@384: 		byte[] b = fname.getBytes();
tikhomirov@384: 		buffer.write(b, 0, b.length);
tikhomirov@384: 		buffer.write('\0');
tikhomirov@384: 		b = revision.toString().getBytes();
tikhomirov@384: 		buffer.write(b, 0, b.length);
tikhomirov@384: 		buffer.write('\n');
tikhomirov@384: 		return this;
tikhomirov@384: 	}
tikhomirov@384: 
tikhomirov@384: 	public byte[] build() {
tikhomirov@384: 		return buffer.toByteArray();
tikhomirov@384: 	}
tikhomirov@384: 
tikhomirov@384: }