tikhomirov@637: /*
tikhomirov@637:  * Copyright (c) 2013 TMate Software Ltd
tikhomirov@637:  *  
tikhomirov@637:  * This program is free software; you can redistribute it and/or modify
tikhomirov@637:  * it under the terms of the GNU General Public License as published by
tikhomirov@637:  * the Free Software Foundation; version 2 of the License.
tikhomirov@637:  *
tikhomirov@637:  * This program is distributed in the hope that it will be useful,
tikhomirov@637:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@637:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@637:  * GNU General Public License for more details.
tikhomirov@637:  *
tikhomirov@637:  * For information on how to redistribute this software under
tikhomirov@637:  * the terms of a license other than GNU General Public License
tikhomirov@637:  * contact TMate Software at support@hg4j.com
tikhomirov@637:  */
tikhomirov@637: package org.tmatesoft.hg.core;
tikhomirov@637: 
tikhomirov@637: import static org.tmatesoft.hg.internal.RequiresFile.*;
tikhomirov@637: 
tikhomirov@637: import java.io.File;
tikhomirov@637: 
tikhomirov@637: import org.tmatesoft.hg.internal.RepoInitializer;
tikhomirov@637: import org.tmatesoft.hg.repo.HgLookup;
tikhomirov@637: import org.tmatesoft.hg.repo.HgRepository;
tikhomirov@637: import org.tmatesoft.hg.util.CancelledException;
tikhomirov@637: 
tikhomirov@637: /**
tikhomirov@637:  * Initialize empty local repository. 
tikhomirov@637:  * <p>
tikhomirov@637:  * Two predefined alternatives are available, {@link #revlogV0() old} and {@link #revlogV1() new} mercurial format respectively.
tikhomirov@637:  * <p>
tikhomirov@637:  * Specific requirements may be turned off/on as needed if you know what you're doing.
tikhomirov@637:  * 
tikhomirov@637:  * @see http://mercurial.selenic.com/wiki/RequiresFile
tikhomirov@637:  * @author Artem Tikhomirov
tikhomirov@637:  * @author TMate Software Ltd.
tikhomirov@637:  */
tikhomirov@637: public class HgInitCommand extends HgAbstractCommand<HgInitCommand> {
tikhomirov@637: 	private static final int V1_DEFAULT = REVLOGV1 | STORE | FNCACHE | DOTENCODE;
tikhomirov@637: 	
tikhomirov@637: 	private final HgLookup hgLookup;
tikhomirov@637: 	private File location;
tikhomirov@637: 	private int requiresFlags;
tikhomirov@637: 	
tikhomirov@637: 	public HgInitCommand() {
tikhomirov@637: 		this(null);
tikhomirov@637: 	}
tikhomirov@637: 
tikhomirov@637: 	public HgInitCommand(HgLookup lookupEnv) {
tikhomirov@637: 		hgLookup = lookupEnv;
tikhomirov@637: 		requiresFlags = V1_DEFAULT;
tikhomirov@637: 	}
tikhomirov@637: 	
tikhomirov@637: 	public HgInitCommand location(File repoLoc) {
tikhomirov@637: 		location = repoLoc;
tikhomirov@637: 		return this;
tikhomirov@637: 	}
tikhomirov@637: 	
tikhomirov@637: 	public HgInitCommand revlogV0() {
tikhomirov@637: 		requiresFlags = REVLOGV0;
tikhomirov@637: 		return this;
tikhomirov@637: 	}
tikhomirov@637: 	
tikhomirov@637: 	public HgInitCommand revlogV1() {
tikhomirov@637: 		requiresFlags = V1_DEFAULT;
tikhomirov@637: 		return this;
tikhomirov@637: 	}
tikhomirov@637: 	
tikhomirov@637: 	public HgInitCommand store(boolean enable) {
tikhomirov@637: 		return switchFlag(STORE, enable);
tikhomirov@637: 	}
tikhomirov@637: 	
tikhomirov@637: 	public HgInitCommand fncache(boolean enable) {
tikhomirov@637: 		return switchFlag(FNCACHE, enable);
tikhomirov@637: 	}
tikhomirov@637: 	
tikhomirov@637: 	public HgInitCommand dotencode(boolean enable) {
tikhomirov@637: 		return switchFlag(DOTENCODE, enable);
tikhomirov@637: 	}
tikhomirov@637: 
tikhomirov@637: 	public HgRepository execute() throws HgRepositoryNotFoundException, HgException, CancelledException {
tikhomirov@637: 		if (location == null) {
tikhomirov@637: 			throw new IllegalArgumentException();
tikhomirov@637: 		}
tikhomirov@637: 		File repoDir;
tikhomirov@637: 		if (".hg".equals(location.getName())) {
tikhomirov@637: 			repoDir = location;
tikhomirov@637: 		} else {
tikhomirov@637: 			repoDir = new File(location, ".hg");
tikhomirov@637: 		}
tikhomirov@637: 		new RepoInitializer().setRequires(requiresFlags).initEmptyRepository(repoDir);
tikhomirov@637: 		return getNewRepository();
tikhomirov@637: 	}
tikhomirov@637: 	
tikhomirov@637: 	public HgRepository getNewRepository() throws HgRepositoryNotFoundException {
tikhomirov@637: 		HgLookup l = hgLookup == null ? new HgLookup() : hgLookup;
tikhomirov@637: 		return l.detect(location);
tikhomirov@637: 	}
tikhomirov@637: 	
tikhomirov@637: 	private HgInitCommand switchFlag(int flag, boolean enable) {
tikhomirov@637: 		if (enable) {
tikhomirov@637: 			requiresFlags |= flag;
tikhomirov@637: 		} else {
tikhomirov@637: 			requiresFlags &= ~flag;
tikhomirov@637: 		}
tikhomirov@637: 		return this;
tikhomirov@637: 	}
tikhomirov@637: }