001    package org.apache.maven.scm.provider.git.gitexe.command.branch;
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 org.apache.maven.scm.log.ScmLogger;
023    import org.apache.maven.scm.util.AbstractConsumer;
024    
025    /**
026     * This logger parses the output of <i>git symbolic-ref HEAD</i>
027     * to determine the current branch.
028     * @author <a href="mailto:struberg@yahoo.de">Mark Struberg</a>
029     *
030     */
031    public class GitCurrentBranchConsumer
032        extends AbstractConsumer
033    {
034        
035        private final static String BRANCH_INDICATOR = "refs/heads/";
036        
037        private String branch;
038        
039        /**
040         * Default constructor.
041         */
042        public GitCurrentBranchConsumer( ScmLogger logger )
043        {
044            super( logger );
045        }
046    
047        public String getBranchName()
048        {
049            return branch;
050        }
051    
052        // ----------------------------------------------------------------------
053        // StreamConsumer Implementation
054        // ----------------------------------------------------------------------
055    
056        /** {@inheritDoc} */
057        public void consumeLine( String line )
058        {
059            line = line.trim();
060            
061            if ( line.startsWith( BRANCH_INDICATOR ) )
062            {
063                branch = line.substring( BRANCH_INDICATOR.length() );
064            }
065        }
066    
067    }