bundles/org.eclipse.equinox.p2.artifact.repository/src/org/eclipse/equinox/internal/p2/artifact/processors/md5/MD5ArtifactComparator.java

/*******************************************************************************
 * Copyright (c) 2008 IBM Corporation and others. All rights reserved. This
 * program and the accompanying materials are made available under the terms of
 * the Eclipse Public License v1.0 which accompanies this distribution, and is
 * available at http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: IBM Corporation - initial API and implementation
 ******************************************************************************/

package org.eclipse.equinox.internal.p2.artifact.processors.md5;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.equinox.internal.p2.artifact.repository.Activator;
import org.eclipse.equinox.internal.provisional.p2.artifact.repository.*;
import org.eclipse.osgi.util.NLS;

public class MD5ArtifactComparator implements IArtifactComparator {

	public static String MD5_COMPARATOR_ID = "org.eclipse.equinox.artifact.md5.comparator"; //$NON-NLS-1$

	public IStatus compare(IArtifactRepository source, IArtifactDescriptor sourceDescriptor, IArtifactRepository destination, IArtifactDescriptor destDescriptor) {
		String sourceMD5 = sourceDescriptor.getProperty(IArtifactDescriptor.DOWNLOAD_MD5);
		String destMD5 = destDescriptor.getProperty(IArtifactDescriptor.DOWNLOAD_MD5);

		if (sourceMD5 == null && destMD5 == null)
			return new Status(IStatus.INFO, Activator.ID, NLS.bind(Messages.info_noMD5Infomation, sourceDescriptor));

		if (sourceMD5 == null)
			return new Status(IStatus.INFO, Activator.ID, NLS.bind(Messages.info_noMD5InRepository, source, sourceDescriptor));

		if (destMD5 == null)
			return new Status(IStatus.INFO, Activator.ID, NLS.bind(Messages.info_noMD5InRepository, destination, destDescriptor));

		if (sourceMD5.equals(destMD5))
			return Status.OK_STATUS;

		return new Status(IStatus.WARNING, Activator.ID, NLS.bind(Messages.warning_differentMD5, new Object[] {source, destination, sourceDescriptor}));
	}
}