001package org.apache.maven.scm.provider.perforce.command.update;
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 java.util.regex.Matcher;
023import java.util.regex.Pattern;
024
025import org.apache.maven.scm.ScmException;
026import org.apache.maven.scm.log.ScmLogger;
027import org.apache.maven.scm.util.AbstractConsumer;
028
029/**
030 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
031 *
032 */
033public class PerforceHaveConsumer
034    extends AbstractConsumer
035{
036    private String have;
037
038    /**
039     * The regular expression used to match header lines
040     */
041    private static final Pattern REVISION_PATTERN = Pattern.compile( "^Change (\\d+) " + // changelist number
042        "on (.*) " + // date
043        "by (.*)@" ); // author
044
045    public PerforceHaveConsumer( ScmLogger logger )
046    {
047        super( logger );
048    }
049
050    public String getHave() throws ScmException
051    {
052        return have;
053    }
054
055    // ----------------------------------------------------------------------
056    // StreamConsumer Implementation
057    // ----------------------------------------------------------------------
058
059    /** {@inheritDoc} */
060    public void consumeLine( String line )
061    {
062        Matcher matcher = REVISION_PATTERN.matcher( line );
063        if( matcher.find() )
064        {
065            have = matcher.group( 1 );
066        }
067    }
068}