| package org.apache.maven.scm.provider.git.jgit.command.diff; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import org.apache.maven.scm.ScmException; |
| import org.apache.maven.scm.ScmFileSet; |
| import org.apache.maven.scm.ScmVersion; |
| import org.apache.maven.scm.command.diff.AbstractDiffCommand; |
| import org.apache.maven.scm.command.diff.DiffScmResult; |
| import org.apache.maven.scm.provider.ScmProviderRepository; |
| import org.apache.maven.scm.provider.git.command.GitCommand; |
| import org.apache.maven.scm.provider.git.command.diff.GitDiffConsumer; |
| import org.apache.maven.scm.provider.git.jgit.command.JGitUtils; |
| import org.codehaus.plexus.util.StringUtils; |
| import org.eclipse.jgit.api.Git; |
| import org.eclipse.jgit.api.errors.GitAPIException; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectReader; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.eclipse.jgit.treewalk.AbstractTreeIterator; |
| import org.eclipse.jgit.treewalk.CanonicalTreeParser; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * @author Dominik Bartholdi (imod) |
| * @since 1.9 |
| */ |
| public class JGitDiffCommand |
| extends AbstractDiffCommand |
| implements GitCommand |
| { |
| |
| @Override |
| protected DiffScmResult executeDiffCommand( ScmProviderRepository repository, ScmFileSet fileSet, |
| ScmVersion startRevision, ScmVersion endRevision ) |
| throws ScmException |
| { |
| |
| Git git = null; |
| try |
| { |
| git = JGitUtils.openRepo( fileSet.getBasedir() ); |
| DiffScmResult diff = callDiff( git, startRevision, endRevision ); |
| git.getRepository().close(); |
| return diff; |
| } |
| catch ( Exception e ) |
| { |
| throw new ScmException( "JGit diff failure!", e ); |
| } |
| finally |
| { |
| JGitUtils.closeRepo( git ); |
| } |
| } |
| |
| public DiffScmResult callDiff( Git git, ScmVersion startRevision, ScmVersion endRevision ) |
| throws IOException, GitAPIException, ScmException |
| { |
| |
| AbstractTreeIterator oldTree = null; |
| if ( startRevision != null && StringUtils.isNotEmpty( startRevision.getName().trim() ) ) |
| { |
| String startRev = startRevision.getName().trim(); |
| oldTree = getTreeIterator( git.getRepository(), startRev ); |
| } |
| |
| AbstractTreeIterator newTree = null; |
| if ( endRevision != null && StringUtils.isNotEmpty( endRevision.getName().trim() ) ) |
| { |
| String endRev = endRevision.getName().trim(); |
| newTree = getTreeIterator( git.getRepository(), endRev ); |
| } |
| |
| OutputStream out = new ByteArrayOutputStream(); |
| |
| git.diff().setOutputStream( out ).setOldTree( oldTree ).setNewTree( newTree ).setCached( false ).call(); |
| git.diff().setOutputStream( out ).setOldTree( oldTree ).setNewTree( newTree ).setCached( true ).call(); |
| |
| out.flush(); |
| |
| GitDiffConsumer consumer = new GitDiffConsumer( getLogger(), null ); |
| String fullDiff = out.toString(); |
| out.close(); |
| |
| String[] lines = fullDiff.split( "\n" ); |
| for ( String aLine : lines ) |
| { |
| consumer.consumeLine( aLine ); |
| } |
| |
| return new DiffScmResult( "JGit diff", consumer.getChangedFiles(), consumer.getDifferences(), |
| consumer.getPatch() ); |
| } |
| |
| private AbstractTreeIterator getTreeIterator( Repository repo, String name ) |
| throws IOException |
| { |
| final ObjectId id = repo.resolve( name ); |
| if ( id == null ) |
| { |
| throw new IllegalArgumentException( name ); |
| } |
| final CanonicalTreeParser p = new CanonicalTreeParser(); |
| |
| try ( ObjectReader or = repo.newObjectReader(); |
| RevWalk revWalk = new RevWalk( repo ) ) |
| { |
| p.reset( or, revWalk.parseTree( id ) ); |
| return p; |
| } |
| } |
| } |