001 package org.apache.maven.scm.util;
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.codehaus.plexus.util.StringUtils;
024 import org.codehaus.plexus.util.cli.StreamConsumer;
025
026 import java.text.DateFormat;
027 import java.text.ParseException;
028 import java.text.SimpleDateFormat;
029 import java.util.Date;
030 import java.util.Locale;
031
032 /**
033 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
034 * @version $Id: AbstractConsumer.java 1329800 2012-04-24 15:41:35Z olamy $
035 */
036 public abstract class AbstractConsumer
037 implements StreamConsumer
038 {
039 private ScmLogger logger;
040
041 /**
042 * AbstractConsumer constructor.
043 *
044 * @param logger The logger to use in the consumer
045 */
046 public AbstractConsumer( ScmLogger logger )
047 {
048 setLogger( logger );
049 }
050
051 public ScmLogger getLogger()
052 {
053 return logger;
054 }
055
056 public void setLogger( ScmLogger logger )
057 {
058 this.logger = logger;
059 }
060
061 /**
062 * Converts the date timestamp from the output into a date object.
063 *
064 * @return A date representing the timestamp of the log entry.
065 */
066 protected Date parseDate( String date, String userPattern, String defaultPattern )
067 {
068 return parseDate( date, userPattern, defaultPattern, null );
069 }
070
071 /**
072 * Converts the date timestamp from the output into a date object.
073 *
074 * @return A date representing the timestamp of the log entry.
075 */
076 protected Date parseDate( String date, String userPattern, String defaultPattern, Locale locale )
077 {
078 DateFormat format;
079
080 String patternUsed = null;
081
082 if ( StringUtils.isNotEmpty( userPattern ) )
083 {
084 format = new SimpleDateFormat( userPattern );
085 patternUsed = userPattern;
086 }
087 else
088 {
089 if ( StringUtils.isNotEmpty( defaultPattern ) )
090 {
091 if ( locale != null )
092 {
093 format = new SimpleDateFormat( defaultPattern, locale );
094 }
095 else
096 {
097 format = new SimpleDateFormat( defaultPattern );
098 }
099 patternUsed = defaultPattern;
100 }
101 else
102 {
103 // Use the English short date pattern if no pattern is specified
104 format = DateFormat.getDateInstance( DateFormat.SHORT, Locale.ENGLISH );
105
106 patternUsed = " DateFormat.SHORT ";
107 }
108 }
109
110 try
111 {
112 return format.parse( date );
113 }
114 catch ( ParseException e )
115 {
116 if ( getLogger() != null && getLogger().isWarnEnabled() )
117 {
118 getLogger().warn(
119 "skip ParseException: " + e.getMessage() + " during parsing date " + date
120 + " with pattern " + patternUsed + " with Locale "
121 + ( locale == null ? Locale.ENGLISH : locale ), e );
122 }
123
124 return null;
125 }
126 }
127 }