001    package 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    
022    import java.io.File;
023    import java.util.Collection;
024    import java.util.regex.Matcher;
025    import java.util.regex.Pattern;
026    
027    import org.codehaus.plexus.util.cli.StreamConsumer;
028    
029    public 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    }