001package org.apache.maven.scm.provider.perforce.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.perforce.PerforceScmProvider;
029import org.apache.maven.scm.provider.perforce.command.PerforceCommand;
030import org.apache.maven.scm.provider.perforce.repository.PerforceScmProviderRepository;
031import org.codehaus.plexus.util.StringUtils;
032import org.codehaus.plexus.util.cli.CommandLineException;
033import org.codehaus.plexus.util.cli.CommandLineUtils;
034import org.codehaus.plexus.util.cli.Commandline;
035
036import java.io.File;
037
038/**
039 * @author Mike Perham
040 *
041 */
042public class PerforceDiffCommand
043    extends AbstractDiffCommand
044    implements PerforceCommand
045{
046    /** {@inheritDoc} */
047    protected DiffScmResult executeDiffCommand( ScmProviderRepository repo, ScmFileSet files, ScmVersion startRev,
048                                                ScmVersion endRev )
049        throws ScmException
050    {
051        Commandline cl =
052            createCommandLine( (PerforceScmProviderRepository) repo, files.getBasedir(), startRev, endRev );
053        PerforceDiffConsumer consumer = new PerforceDiffConsumer();
054        if ( getLogger().isInfoEnabled() )
055        {
056            getLogger().info( "Executing: " + PerforceScmProvider.clean( cl.toString() ) );
057        }
058        boolean success = false;
059        try
060        {
061            CommandLineUtils.StringStreamConsumer err = new CommandLineUtils.StringStreamConsumer();
062            int exitCode = CommandLineUtils.executeCommandLine( cl, consumer, err );
063
064            if ( exitCode != 0 )
065            {
066                String cmdLine = CommandLineUtils.toString( cl.getCommandline() );
067
068                StringBuilder msg = new StringBuilder( "Exit code: " + exitCode + " - " + err.getOutput() );
069                msg.append( '\n' );
070                msg.append( "Command line was:" + cmdLine );
071
072                throw new CommandLineException( msg.toString() );
073            }
074        }
075        catch ( CommandLineException e )
076        {
077            if ( getLogger().isErrorEnabled() )
078            {
079                getLogger().error( "CommandLineException " + e.getMessage(), e );
080            }
081        }
082
083        return new DiffScmResult( cl.toString(), success ? "Diff successful" : "Unable to diff", consumer
084            .getOutput(), success );
085    }
086
087    public static Commandline createCommandLine( PerforceScmProviderRepository repo, File workingDirectory,
088                                                 ScmVersion startRev, ScmVersion endRev )
089    {
090        String start = startRev != null && StringUtils.isNotEmpty( startRev.getName() ) ? "@" + startRev.getName() : "";
091        String end = endRev != null && StringUtils.isNotEmpty( endRev.getName() ) ? endRev.getName() : "now";
092
093        Commandline command = PerforceScmProvider.createP4Command( repo, workingDirectory );
094
095        command.createArg().setValue( "diff2" );
096        command.createArg().setValue( "-u" );
097        // I'm assuming the "revs" are actually labels
098        command.createArg().setValue( "..." + start );
099        command.createArg().setValue( "...@" + end );
100        return command;
101    }
102
103}