001    package org.apache.maven.scm.provider.bazaar.command.diff;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     * http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    import org.apache.maven.scm.ScmException;
023    import org.apache.maven.scm.ScmFileSet;
024    import org.apache.maven.scm.ScmResult;
025    import org.apache.maven.scm.ScmVersion;
026    import org.apache.maven.scm.command.Command;
027    import org.apache.maven.scm.command.diff.AbstractDiffCommand;
028    import org.apache.maven.scm.command.diff.DiffScmResult;
029    import org.apache.maven.scm.provider.ScmProviderRepository;
030    import org.apache.maven.scm.provider.bazaar.BazaarUtils;
031    import org.apache.maven.scm.provider.bazaar.command.BazaarConstants;
032    import org.codehaus.plexus.util.StringUtils;
033    
034    /**
035     * @author <a href="mailto:torbjorn@smorgrav.org">Torbj�rn Eikli Sm�rgrav</a>
036     *
037     */
038    public class BazaarDiffCommand
039        extends AbstractDiffCommand
040        implements Command
041    {
042        /** {@inheritDoc} */
043        protected DiffScmResult executeDiffCommand( ScmProviderRepository repo, ScmFileSet fileSet,
044                                                    ScmVersion startRevision, ScmVersion endRevision )
045            throws ScmException
046        {
047    
048            String[] diffCmd;
049            if ( startRevision != null && StringUtils.isNotEmpty( startRevision.getName() ) )
050            {
051                String revArg = startRevision.getName();
052                if ( endRevision != null && StringUtils.isNotEmpty( endRevision.getName() ) )
053                {
054                    revArg += ".." + endRevision.getName();
055                }
056                diffCmd = new String[]{BazaarConstants.DIFF_CMD, BazaarConstants.REVISION_OPTION, revArg};
057            }
058            else
059            {
060                diffCmd = new String[]{BazaarConstants.DIFF_CMD};
061            }
062    
063            diffCmd = BazaarUtils.expandCommandLine( diffCmd, fileSet );
064            BazaarDiffConsumer consumer = new BazaarDiffConsumer( getLogger(), fileSet.getBasedir() );
065    
066            ScmResult result = BazaarUtils.execute( consumer, getLogger(), fileSet.getBasedir(), diffCmd );
067    
068            return new DiffScmResult( consumer.getChangedFiles(), consumer.getDifferences(), consumer.getPatch(), result );
069        }
070    }