tikhomirov@74: /*
tikhomirov@74:  * Copyright (c) 2011 TMate Software Ltd
tikhomirov@74:  *  
tikhomirov@74:  * This program is free software; you can redistribute it and/or modify
tikhomirov@74:  * it under the terms of the GNU General Public License as published by
tikhomirov@74:  * the Free Software Foundation; version 2 of the License.
tikhomirov@74:  *
tikhomirov@74:  * This program is distributed in the hope that it will be useful,
tikhomirov@74:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@74:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@74:  * GNU General Public License for more details.
tikhomirov@74:  *
tikhomirov@74:  * For information on how to redistribute this software under
tikhomirov@74:  * the terms of a license other than GNU General Public License
tikhomirov@102:  * contact TMate Software at support@hg4j.com
tikhomirov@74:  */
tikhomirov@74: package org.tmatesoft.hg.core;
tikhomirov@74: 
tikhomirov@74: import java.io.File;
tikhomirov@74: 
tikhomirov@74: import org.tmatesoft.hg.repo.HgRepository;
tikhomirov@95: import org.tmatesoft.hg.repo.HgLookup;
tikhomirov@74: 
tikhomirov@74: /**
tikhomirov@131:  * Starting point for the library.
tikhomirov@148:  * <p>Sample use:
tikhomirov@148:  * <pre>
tikhomirov@148:  *  HgRepoFacade f = new HgRepoFacade();
tikhomirov@148:  *  f.initFrom(System.getenv("whatever.repo.location"));
tikhomirov@148:  *  HgStatusCommand statusCmd = f.createStatusCommand();
tikhomirov@148:  *  HgStatusCommand.Handler handler = ...;
tikhomirov@148:  *  statusCmd.execute(handler);
tikhomirov@148:  * </pre>
tikhomirov@131:  * 
tikhomirov@74:  * @author Artem Tikhomirov
tikhomirov@74:  * @author TMate Software Ltd.
tikhomirov@74:  */
tikhomirov@131: public class HgRepoFacade {
tikhomirov@74: 	private HgRepository repo;
tikhomirov@74: 
tikhomirov@131: 	public HgRepoFacade() {
tikhomirov@74: 	}
tikhomirov@143: 	
tikhomirov@148: 	/**
tikhomirov@148: 	 * @param hgRepo
tikhomirov@148: 	 * @return true on successful initialization
tikhomirov@148: 	 * @throws IllegalArgumentException when argument is null 
tikhomirov@148: 	 */
tikhomirov@143: 	public boolean init(HgRepository hgRepo) {
tikhomirov@143: 		if (hgRepo == null) {
tikhomirov@143: 			throw new IllegalArgumentException();
tikhomirov@143: 		}
tikhomirov@143: 		repo = hgRepo;
tikhomirov@143: 		return !repo.isInvalid();
tikhomirov@143: 	}
tikhomirov@74: 
tikhomirov@148: 	/**
tikhomirov@148: 	 * Tries to find repository starting from the current working directory.
tikhomirov@148: 	 * @return <code>true</code> if found valid repository
tikhomirov@148: 	 * @throws HgException in case of errors during repository initialization
tikhomirov@148: 	 */
tikhomirov@148: 	public boolean init() throws HgException {
tikhomirov@95: 		repo = new HgLookup().detectFromWorkingDir();
tikhomirov@74: 		return repo != null && !repo.isInvalid();
tikhomirov@74: 	}
tikhomirov@74: 	
tikhomirov@148: 	/**
tikhomirov@148: 	 * Looks up Mercurial repository starting from specified location and up to filesystem root.
tikhomirov@148: 	 * 
tikhomirov@148: 	 * @param repoLocation path to any folder within structure of a Mercurial repository.
tikhomirov@148: 	 * @return <code>true</code> if found valid repository 
tikhomirov@148: 	 * @throws HgException if there are errors accessing specified location
tikhomirov@148: 	 * @throws IllegalArgumentException if argument is <code>null</code>
tikhomirov@148: 	 */
tikhomirov@148: 	public boolean initFrom(File repoLocation) throws HgException {
tikhomirov@148: 		if (repoLocation == null) {
tikhomirov@148: 			throw new IllegalArgumentException();
tikhomirov@148: 		}
tikhomirov@148: 		repo = new HgLookup().detect(repoLocation);
tikhomirov@74: 		return repo != null && !repo.isInvalid();
tikhomirov@74: 	}
tikhomirov@115: 	
tikhomirov@115: 	public HgRepository getRepository() {
tikhomirov@115: 		if (repo == null) {
tikhomirov@115: 			throw new IllegalStateException("Call any of #init*() methods first first");
tikhomirov@115: 		}
tikhomirov@115: 		return repo;
tikhomirov@115: 	}
tikhomirov@74: 
tikhomirov@131: 	public HgLogCommand createLogCommand() {
tikhomirov@131: 		return new HgLogCommand(repo/*, getCommandContext()*/);
tikhomirov@74: 	}
tikhomirov@108: 
tikhomirov@131: 	public HgStatusCommand createStatusCommand() {
tikhomirov@131: 		return new HgStatusCommand(repo/*, getCommandContext()*/);
tikhomirov@108: 	}
tikhomirov@108: 
tikhomirov@131: 	public HgCatCommand createCatCommand() {
tikhomirov@131: 		return new HgCatCommand(repo);
tikhomirov@131: 	}
tikhomirov@131: 
tikhomirov@131: 	public HgManifestCommand createManifestCommand() {
tikhomirov@131: 		return new HgManifestCommand(repo);
tikhomirov@108: 	}
tikhomirov@74: }