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/******************************************************************************* * Copyright (c) 2011, 2012 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.orion.server.git.objects; import java.io.IOException; import java.net.URI; import java.net.URISyntaxException; import org.eclipse.core.runtime.*; import org.eclipse.jgit.lib.*; import org.eclipse.jgit.merge.ResolveMerger; import org.eclipse.jgit.merge.ThreeWayMerger; import org.eclipse.jgit.revwalk.RevCommit; import org.eclipse.orion.internal.server.servlets.ProtocolConstants; import org.eclipse.orion.server.core.resources.Property; import org.eclipse.orion.server.core.resources.ResourceShape; import org.eclipse.orion.server.core.resources.annotations.PropertyDescription; import org.eclipse.orion.server.core.resources.annotations.ResourceDescription; import org.eclipse.orion.server.git.BaseToCloneConverter; import org.eclipse.orion.server.git.GitConstants; import org.eclipse.orion.server.git.servlets.GitServlet; import org.eclipse.orion.server.git.servlets.GitUtils; import org.eclipse.osgi.util.NLS; import org.json.JSONException; import org.json.JSONObject; @ResourceDescription(type = Diff.TYPE) public class Diff extends GitObject { public static final String RESOURCE = "diff"; //$NON-NLS-1$ public static final String TYPE = "Diff"; //$NON-NLS-1$ private static final ResourceShape DEFAULT_RESOURCE_SHAPE = new ResourceShape(); { Property[] defaultProperties = new Property[] { // new Property(ProtocolConstants.KEY_LOCATION), // super new Property(GitConstants.KEY_CLONE), // super new Property(GitConstants.KEY_COMMIT_OLD), // new Property(GitConstants.KEY_COMMIT_NEW), // new Property(GitConstants.KEY_COMMIT_BASE) }; DEFAULT_RESOURCE_SHAPE.setProperties(defaultProperties); } private URI baseLocation; public Diff(URI baseLocation, Repository db) throws URISyntaxException, CoreException { super(BaseToCloneConverter.getCloneLocation(baseLocation, BaseToCloneConverter.DIFF), db); this.baseLocation = baseLocation; } @Override public JSONObject toJSON() throws JSONException, URISyntaxException, IOException, CoreException { return jsonSerializer.serialize(this, DEFAULT_RESOURCE_SHAPE); } @Override protected URI getLocation() throws URISyntaxException { return baseLocation; } @PropertyDescription(name = GitConstants.KEY_COMMIT_OLD) private URI getOldLocation() throws URISyntaxException { IPath path = new Path(baseLocation.getPath()).removeFirstSegments(2); return getOldLocation(baseLocation, path); } private URI getOldLocation(URI location, IPath path) throws URISyntaxException { String scope = path.segment(0); if (scope.contains("..")) { //$NON-NLS-1$ String[] commits = scope.split("\\.\\."); //$NON-NLS-1$ if (commits.length != 2) { throw new IllegalArgumentException( NLS.bind("Illegal scope format, expected {old}..{new}, was {0}", scope)); } IPath p = new Path(GitServlet.GIT_URI + '/' + Commit.RESOURCE).append(commits[0]) .append(path.removeFirstSegments(1)); return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), p.toString(), "parts=body", null); //$NON-NLS-1$ } else if (scope.equals(GitConstants.KEY_DIFF_CACHED)) { IPath p = new Path(GitServlet.GIT_URI + '/' + Commit.RESOURCE).append(Constants.HEAD) .append(path.removeFirstSegments(1)); return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), p.toString(), "parts=body", null); //$NON-NLS-1$ } else if (scope.equals(GitConstants.KEY_DIFF_DEFAULT)) { IPath p = new Path(GitServlet.GIT_URI + '/' + Index.RESOURCE).append(path.removeFirstSegments(1)); return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), p.toString(), null, null); } else { IPath p = new Path(GitServlet.GIT_URI + '/' + Commit.RESOURCE).append(scope) .append(path.removeFirstSegments(1)); return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), p.toString(), "parts=body", null); //$NON-NLS-1$ } } @PropertyDescription(name = GitConstants.KEY_COMMIT_NEW) private URI getNewLocation() throws URISyntaxException { IPath path = new Path(baseLocation.getPath()).removeFirstSegments(2); return getNewLocation(baseLocation, path); } private URI getNewLocation(URI location, IPath path) throws URISyntaxException { String scope = path.segment(0); if (scope.contains("..")) { //$NON-NLS-1$ String[] commits = scope.split("\\.\\."); //$NON-NLS-1$ if (commits.length != 2) { throw new IllegalArgumentException( NLS.bind("Illegal scope format, expected {old}..{new}, was {0}", scope)); } IPath p = new Path(GitServlet.GIT_URI + '/' + Commit.RESOURCE).append(commits[1]) .append(path.removeFirstSegments(1)); return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), p.toString(), "parts=body", null); //$NON-NLS-1$ } else if (scope.equals(GitConstants.KEY_DIFF_CACHED)) { IPath p = new Path(GitServlet.GIT_URI + '/' + Index.RESOURCE).append(path.removeFirstSegments(1)); return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), p.toString(), null, null); } else { /* including scope.equals(GitConstants.KEY_DIFF_DEFAULT */ return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), path.removeFirstSegments(1).makeAbsolute().toString(), null, null); } } @PropertyDescription(name = GitConstants.KEY_COMMIT_BASE) private URI getBaseLocation() throws URISyntaxException, IOException { IPath path = new Path(baseLocation.getPath()).removeFirstSegments(2); return getBaseLocation(baseLocation, db, path); } private URI getBaseLocation(URI location, Repository db, IPath path) throws URISyntaxException, IOException { String scope = path.segment(0); if (scope.contains("..")) { //$NON-NLS-1$ String[] commits = scope.split("\\.\\."); //$NON-NLS-1$ if (commits.length != 2) { throw new IllegalArgumentException( NLS.bind("Illegal scope format, expected {old}..{new}, was {0}", scope)); } ThreeWayMerger merger = new ResolveMerger(db) { protected boolean mergeImpl() throws IOException { // do nothing return false; } }; // use #merge to set sourceObjects String tip0 = GitUtils.decode(commits[0]); String tip1 = GitUtils.decode(commits[1]); merger.merge(new ObjectId[] { db.resolve(tip0), db.resolve(tip1) }); RevCommit baseCommit = merger.getBaseCommit(0, 1); IPath p = new Path(GitServlet.GIT_URI + '/' + Commit.RESOURCE).append(baseCommit.getId().getName()) .append(path.removeFirstSegments(1)); return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), p.toString(), "parts=body", null); //$NON-NLS-1$ } else if (scope.equals(GitConstants.KEY_DIFF_CACHED)) { // HEAD is the base IPath p = new Path(GitServlet.GIT_URI + '/' + Commit.RESOURCE).append(Constants.HEAD) .append(path.removeFirstSegments(1)); return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), p.toString(), "parts=body", null); //$NON-NLS-1$ } else { // index is the base IPath p = new Path(GitServlet.GIT_URI + '/' + Index.RESOURCE).append(path.removeFirstSegments(1)); return new URI(location.getScheme(), location.getUserInfo(), location.getHost(), location.getPort(), p.toString(), null, null); } } }