001package org.apache.maven.scm.provider.accurev.cli;
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.io.File;
023import java.util.Collection;
024import java.util.regex.Matcher;
025import java.util.regex.Pattern;
026
027import org.codehaus.plexus.util.cli.StreamConsumer;
028
029public class StatBackingConsumer
030    implements StreamConsumer
031{
032
033    private static final Pattern STAT_PATTERN = Pattern.compile( "\\s*(\\S+)\\s+.*\\(([^()]+)\\)\\s*" );
034
035    private static final String NO_SUCH_ELEM = "no such elem";
036
037    private Collection<File> memberElements;
038
039    private Collection<File> nonMemberElements;
040
041    public StatBackingConsumer( Collection<File> memberElements, Collection<File> nonMemberElements )
042    {
043        this.memberElements = memberElements;
044        this.nonMemberElements = nonMemberElements;
045    }
046
047    public void consumeLine( String line )
048    {
049        // first group is the fileName
050        // second group is the indicator expected "backed","stale","overlap","underlap","no such elem";
051        Pattern pattern = STAT_PATTERN;
052        Matcher matcher = pattern.matcher( line );
053        if ( matcher.matches() )
054        {
055            File file = new File( matcher.group( 1 ) );
056            String indicator = matcher.group( 2 );
057            if ( NO_SUCH_ELEM.equals( indicator ) )
058            {
059                nonMemberElements.add( file );
060            }
061            else
062            {
063                memberElements.add( file );
064            }
065        }
066
067    }
068
069}