001 package org.apache.maven.scm.provider.tfs.command.consumer;
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.text.DateFormat;
023 import java.text.ParseException;
024 import java.util.ArrayList;
025 import java.util.Date;
026 import java.util.List;
027 import java.util.Locale;
028 import java.util.TimeZone;
029 import java.util.regex.Matcher;
030 import java.util.regex.Pattern;
031
032 import org.apache.maven.scm.ChangeFile;
033 import org.apache.maven.scm.ChangeSet;
034 import org.apache.maven.scm.log.ScmLogger;
035 import org.apache.maven.scm.util.AbstractConsumer;
036
037 /**
038 * @author Olivier Lamy
039 *
040 */
041 public class TfsChangeLogConsumer
042 extends AbstractConsumer
043 {
044
045 private static final String PATTERN =
046 "^[^:]*:[ \t]([0-9]*)\n" + "[^:]*:[ \t](.*)\n[^:]*:[ \t](.*)\n"
047 + "[^:]*:((?:\n.*)*)\n\n[^\n :]*:(?=\n )((?:\n[ \t]+.*)*)";
048
049 private static final String PATTERN_ITEM = "\n ([^$]+) (\\$/.*)";
050
051 private List<ChangeSet> logs = new ArrayList<ChangeSet>();
052
053 private String buffer = "";
054
055 boolean fed = false;
056
057 public TfsChangeLogConsumer( ScmLogger logger )
058 {
059 super( logger );
060 }
061
062 public void consumeLine( String line )
063 {
064 fed = true;
065 if ( line.startsWith( "-----" ) )
066 {
067 addChangeLog();
068 }
069 buffer += line + "\n";
070 }
071
072 public List<ChangeSet> getLogs()
073 {
074 addChangeLog();
075 return logs;
076 }
077
078 private void addChangeLog()
079 {
080 if ( !buffer.equals( "" ) )
081 {
082 Pattern p = Pattern.compile( PATTERN );
083 Matcher m = p.matcher( buffer );
084 if ( m.find() )
085 {
086 String revision = m.group( 1 ).trim();
087 String username = m.group( 2 ).trim();
088 String dateString = m.group( 3 ).trim();
089 String comment = m.group( 4 ).trim();
090 Pattern itemPattern = Pattern.compile( PATTERN_ITEM );
091 Matcher itemMatcher = itemPattern.matcher( m.group( 5 ) );
092 List<ChangeFile> files = new ArrayList<ChangeFile>();
093 while ( itemMatcher.find() )
094 {
095 ChangeFile file = new ChangeFile( itemMatcher.group( 2 ).trim(), revision );
096 files.add( file );
097 }
098 Date date;
099 try
100 {
101 date = parseDate( dateString );
102 }
103 catch ( ParseException e )
104 {
105 getLogger().error( "Date parse error", e );
106 throw new RuntimeException( e );
107 }
108
109 ChangeSet change = new ChangeSet( date, comment, username, files );
110 logs.add( change );
111 }
112 buffer = "";
113 }
114 }
115
116 public boolean hasBeenFed()
117 {
118 return fed;
119 }
120
121 @SuppressWarnings( "deprecation" )
122 protected static Date parseDate( String dateString )
123 throws ParseException
124 {
125 Date date = null;
126 try
127 {
128 // Use the depricated Date.parse method as this is very good at
129 // detecting
130 // dates commonly output by the US and UK standard locales of
131 // dotnet that
132 // are output by the Microsoft command line client.
133 date = new Date( Date.parse( dateString ) );
134 }
135 catch ( IllegalArgumentException e )
136 {
137 // ignore - parse failed.
138 }
139 if ( date == null )
140 {
141 // The old fashioned way did not work. Let's try it using a more
142 // complex
143 // alternative.
144 DateFormat[] formats = createDateFormatsForLocaleAndTimeZone( null, null );
145 return parseWithFormats( dateString, formats );
146 }
147 return date;
148 }
149
150 private static Date parseWithFormats( String input, DateFormat[] formats )
151 throws ParseException
152 {
153 ParseException parseException = null;
154 for ( int i = 0; i < formats.length; i++ )
155 {
156 try
157 {
158 return formats[i].parse( input );
159 }
160 catch ( ParseException ex )
161 {
162 parseException = ex;
163 }
164 }
165
166 throw parseException;
167 }
168
169 /**
170 * Build an array of DateFormats that are commonly used for this locale and timezone.
171 */
172 private static DateFormat[] createDateFormatsForLocaleAndTimeZone( Locale locale, TimeZone timeZone )
173 {
174 if ( locale == null )
175 {
176 locale = Locale.getDefault();
177 }
178
179 if ( timeZone == null )
180 {
181 timeZone = TimeZone.getDefault();
182 }
183
184 List<DateFormat> formats = new ArrayList<DateFormat>();
185
186 for ( int dateStyle = DateFormat.FULL; dateStyle <= DateFormat.SHORT; dateStyle++ )
187 {
188 for ( int timeStyle = DateFormat.FULL; timeStyle <= DateFormat.SHORT; timeStyle++ )
189 {
190 DateFormat df = DateFormat.getDateTimeInstance( dateStyle, timeStyle, locale );
191 if ( timeZone != null )
192 {
193 df.setTimeZone( timeZone );
194 }
195 formats.add( df );
196 }
197 }
198
199 for ( int dateStyle = DateFormat.FULL; dateStyle <= DateFormat.SHORT; dateStyle++ )
200 {
201 DateFormat df = DateFormat.getDateInstance( dateStyle, locale );
202 df.setTimeZone( timeZone );
203 formats.add( df );
204 }
205
206 return (DateFormat[]) formats.toArray( new DateFormat[formats.size()] );
207 }
208
209 }