CVSSession.java

/*******************************************************************************
 * Copyright (c) 2004, 2006
 * Thomas Hallgren, Kenneth Olwing, Mitch Sonies
 * Pontus Rydin, Nils Unden, Peer Torngren
 * The code, documentation and other materials contained herein have been
 * licensed under the Eclipse Public License - v 1.0 by the individual
 * copyright holders listed above, as Initial Contributors under such license.
 * The text of such license is available at www.eclipse.org.
 *******************************************************************************/

package org.eclipse.buckminster.cvspkg.internal;

import java.io.Closeable;
import java.util.NoSuchElementException;
import java.util.StringTokenizer;

import org.eclipse.buckminster.cvspkg.Messages;
import org.eclipse.buckminster.runtime.BuckminsterException;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.osgi.util.NLS;
import org.eclipse.team.internal.ccvs.core.CVSTag;
import org.eclipse.team.internal.ccvs.core.ICVSFolder;
import org.eclipse.team.internal.ccvs.core.ICVSRepositoryLocation;
import org.eclipse.team.internal.ccvs.core.client.Session;
import org.eclipse.team.internal.ccvs.core.resources.CVSWorkspaceRoot;
import org.eclipse.team.internal.ccvs.core.resources.RemoteFolderSandbox;

/**
 * @author Thomas Hallgren
 */
@SuppressWarnings("restriction")
public class CVSSession implements Closeable {
	private final ICVSRepositoryLocation location;

	private final String moduleName;

	private Session readerSession;

	public CVSSession(String repositoryURI) throws CoreException {
		StringTokenizer tokenizer = new StringTokenizer(repositoryURI, ","); //$NON-NLS-1$
		try {
			String repo = tokenizer.nextToken();
			location = CVSReaderType.getLocationFromString(repo);
			String module = tokenizer.hasMoreTokens() ? tokenizer.nextToken() : null;
			if (module != null && module.startsWith("/")) //$NON-NLS-1$
				module = module.substring(1);
			moduleName = module;
		} catch (NoSuchElementException e) {
			throw BuckminsterException.fromMessage(NLS.bind(Messages.repository_URI_not_in_0_format, "<" //$NON-NLS-1$
					+ Messages.cvs_root + ">,<" //$NON-NLS-1$
					+ Messages.cvs_module + ">")); //$NON-NLS-1$
		}
	}

	@Override
	public synchronized void close() {
		if (readerSession != null) {
			readerSession.close();
			readerSession = null;
		}
	}

	public String getFilePrefix() {
		StringBuilder bld = new StringBuilder(location.getRootDirectory());
		bld.append('/');
		if (moduleName != null) {
			bld.append(moduleName);
			bld.append('/');
		}
		return bld.toString();
	}

	public final ICVSRepositoryLocation getLocation() {
		return location;
	}

	public final String getModuleName() {
		return moduleName;
	}

	public String getRepository() {
		String repoURI = location.getLocation(false);
		if (moduleName == null)
			return repoURI;

		return repoURI + '/' + moduleName;
	}

	synchronized Session getReaderSession(IProgressMonitor monitor) throws CoreException {
		if (readerSession == null) {
			ICVSFolder root = CVSWorkspaceRoot.getCVSFolderFor(ResourcesPlugin.getWorkspace().getRoot());
			readerSession = new Session(getLocation(), root, false /*
																	 * output to
																	 * console
																	 */);
			readerSession.open(monitor, false);
		}
		return readerSession;
	}

	RemoteFolderSandbox getSandbox(CVSTag tag) {
		return new RemoteFolderSandbox(null, this.getLocation(), this.getModuleName(), tag);
	}
}