001package org.apache.maven.scm.provider.svn.svnexe.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
022import org.apache.maven.scm.ScmException;
023import org.apache.maven.scm.ScmFileSet;
024import org.apache.maven.scm.ScmVersion;
025import org.apache.maven.scm.command.diff.AbstractDiffCommand;
026import org.apache.maven.scm.command.diff.DiffScmResult;
027import org.apache.maven.scm.provider.ScmProviderRepository;
028import org.apache.maven.scm.provider.svn.command.SvnCommand;
029import org.apache.maven.scm.provider.svn.command.diff.SvnDiffConsumer;
030import org.apache.maven.scm.provider.svn.repository.SvnScmProviderRepository;
031import org.apache.maven.scm.provider.svn.svnexe.command.SvnCommandLineUtils;
032import org.codehaus.plexus.util.StringUtils;
033import org.codehaus.plexus.util.cli.CommandLineException;
034import org.codehaus.plexus.util.cli.CommandLineUtils;
035import org.codehaus.plexus.util.cli.Commandline;
036
037import java.io.File;
038
039/**
040 * @author <a href="mailto:brett@apache.org">Brett Porter</a>
041 * @author Olivier Lamy
042 *
043 */
044public class SvnDiffCommand
045    extends AbstractDiffCommand
046    implements SvnCommand
047{
048    /** {@inheritDoc} */
049    protected DiffScmResult executeDiffCommand( ScmProviderRepository repo, ScmFileSet fileSet, ScmVersion startVersion,
050                                                ScmVersion endVersion )
051        throws ScmException
052    {
053        Commandline cl =
054            createCommandLine( (SvnScmProviderRepository) repo, fileSet.getBasedir(), startVersion, endVersion );
055
056        SvnDiffConsumer consumer = new SvnDiffConsumer( getLogger(), fileSet.getBasedir() );
057
058        CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();
059
060        if ( getLogger().isInfoEnabled() )
061        {
062            getLogger().info( "Executing: " + SvnCommandLineUtils.cryptPassword( cl ) );
063            getLogger().info( "Working directory: " + cl.getWorkingDirectory().getAbsolutePath() );
064        }
065
066        int exitCode;
067
068        try
069        {
070            exitCode = SvnCommandLineUtils.execute( cl, consumer, stderr, getLogger() );
071        }
072        catch ( CommandLineException ex )
073        {
074            throw new ScmException( "Error while executing command.", ex );
075        }
076
077        if ( exitCode != 0 )
078        {
079            return new DiffScmResult( cl.toString(), "The svn command failed.", stderr.getOutput(), false );
080        }
081
082        return new DiffScmResult( cl.toString(), consumer.getChangedFiles(), consumer.getDifferences(),
083                                  consumer.getPatch() );
084    }
085
086    // ----------------------------------------------------------------------
087    //
088    // ----------------------------------------------------------------------
089
090    public static Commandline createCommandLine( SvnScmProviderRepository repository, File workingDirectory,
091                                                 ScmVersion startVersion, ScmVersion endVersion )
092    {
093        Commandline cl = SvnCommandLineUtils.getBaseSvnCommandLine( workingDirectory, repository );
094
095        cl.createArg().setValue( "diff" );
096
097        if ( startVersion != null && StringUtils.isNotEmpty( startVersion.getName() ) )
098        {
099            cl.createArg().setValue( "-r" );
100
101            if ( endVersion != null && StringUtils.isNotEmpty( endVersion.getName() ) )
102            {
103                cl.createArg().setValue( startVersion.getName() + ":" + endVersion.getName() );
104            }
105            else
106            {
107                cl.createArg().setValue( startVersion.getName() );
108            }
109        }
110
111        return cl;
112    }
113}