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1   package org.apache.maven.scm.provider.bazaar.command.changelog;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   * http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.apache.maven.scm.ChangeFile;
23  import org.apache.maven.scm.ChangeSet;
24  import org.apache.maven.scm.ScmFileStatus;
25  import org.apache.maven.scm.log.ScmLogger;
26  import org.apache.maven.scm.provider.bazaar.command.BazaarConsumer;
27  
28  import java.util.ArrayList;
29  import java.util.Date;
30  import java.util.List;
31  
32  /**
33   * @author <a href="mailto:torbjorn@smorgrav.org">Torbjorn Eikli Smorgrav</a>
34   * @author Olivier Lamy
35   *
36   */
37  public class BazaarChangeLogConsumer
38      extends BazaarConsumer
39  {
40  
41      private static final String BAZAAR_TIME_PATTERN = "yyyy-MM-dd HH:mm:ss Z";
42  
43      private static final String START_LOG_TAG = "-----";
44  
45      private static final String REVNO_TAG = "revno: ";
46  
47      private static final String AUTHOR_TAG = "committer: ";
48  
49      private static final String TIME_STAMP_TOKEN = "timestamp: ";
50  
51      private static final String MESSAGE_TOKEN = "message:";
52  
53      private static final String BRANCH_NICK_TOKEN = "branch nick: ";
54  
55      private static final String MERGED_TOKEN = "merged: ";
56  
57      private static final String RENAME_SEPARATOR = " => ";
58  
59      private List<ChangeSet> logEntries = new ArrayList<ChangeSet>();
60  
61      private ChangeSet currentChange;
62  
63      private ChangeSet lastChange;
64  
65      private boolean isMergeEntry;
66  
67      private String currentRevision;
68  
69      private StringBuilder currentComment;
70  
71      private String userDatePattern;
72  
73      /**
74       * Null means not parsing message nor files, UNKNOWN means parsing message
75       */
76      private ScmFileStatus currentStatus = null;
77  
78      public BazaarChangeLogConsumer( ScmLogger logger, String userDatePattern )
79      {
80          super( logger );
81  
82          this.userDatePattern = userDatePattern;
83      }
84  
85      public List<ChangeSet> getModifications()
86      {
87          return logEntries;
88      }
89  
90      /** {@inheritDoc} */
91      public void doConsume( ScmFileStatus status, String line )
92      {
93          String tmpLine = line;
94  
95          // Parse line
96          if ( line.startsWith( START_LOG_TAG ) )
97          {
98              //If last entry was part a merged entry
99              if ( isMergeEntry && lastChange != null )
100             {
101                 String comment = lastChange.getComment();
102                 comment += "\n[MAVEN]: Merged from " + currentChange.getAuthor();
103                 comment += "\n[MAVEN]:    " + currentChange.getDateFormatted();
104                 comment += "\n[MAVEN]:    " + currentChange.getComment();
105                 lastChange.setComment( comment );
106             }
107 
108             //Init a new changeset
109             currentChange = new ChangeSet();
110             currentChange.setFiles( new ArrayList<ChangeFile>() );
111             logEntries.add( currentChange );
112 
113             //Reset memeber vars
114             currentComment = new StringBuilder();
115             currentStatus = null;
116             currentRevision = "";
117             isMergeEntry = false;
118         }
119         else if ( line.startsWith( MERGED_TOKEN ) )
120         {
121             //This is part of lastChange and is not a separate log entry
122             isMergeEntry = true;
123             logEntries.remove( currentChange );
124             if ( logEntries.size() > 0 )
125             {
126                 lastChange = (ChangeSet) logEntries.get( logEntries.size() - 1 );
127             }
128             else
129             {
130                 if ( getLogger().isWarnEnabled() )
131                 {
132                     getLogger().warn( "First entry was unexpectedly a merged entry" );
133                 }
134                 lastChange = null;
135             }
136         }
137         else if ( line.startsWith( REVNO_TAG ) )
138         {
139             tmpLine = line.substring( REVNO_TAG.length() );
140             tmpLine = tmpLine.trim();
141             currentRevision = tmpLine;
142         }
143         else if ( line.startsWith( AUTHOR_TAG ) )
144         {
145             tmpLine = line.substring( AUTHOR_TAG.length() );
146             tmpLine = tmpLine.trim();
147             currentChange.setAuthor( tmpLine );
148         }
149         else if ( line.startsWith( TIME_STAMP_TOKEN ) )
150         {
151             tmpLine = line.substring( TIME_STAMP_TOKEN.length() + 3 );
152             tmpLine = tmpLine.trim();
153             Date date = parseDate( tmpLine, userDatePattern, BAZAAR_TIME_PATTERN );
154             currentChange.setDate( date );
155         }
156         else if ( line.startsWith( MESSAGE_TOKEN ) )
157         {
158             currentStatus = ScmFileStatus.UNKNOWN;
159         }
160         else if ( status != null )
161         {
162             currentStatus = status;
163         }
164         else if ( currentStatus == ScmFileStatus.UNKNOWN )
165         {
166             currentComment.append( line );
167             currentChange.setComment( currentComment.toString() );
168             currentComment.append( "\n" );
169         }
170         else if ( currentStatus != null )
171         {
172             tmpLine = tmpLine.trim();
173             final ChangeFile changeFile;
174             if ( currentStatus == ScmFileStatus.RENAMED )
175             {
176                 final String[] parts = tmpLine.split( RENAME_SEPARATOR );
177                 if ( parts.length != 2 )
178                 {
179                     changeFile = new ChangeFile( tmpLine, currentRevision );
180                 }
181                 else
182                 {
183                     changeFile = new ChangeFile( parts[1], currentRevision );
184                     changeFile.setOriginalName( parts[0] );
185                 }
186             }
187             else
188             {
189                 changeFile = new ChangeFile( tmpLine, currentRevision );
190             }
191             changeFile.setAction( currentStatus );
192             currentChange.addFile( changeFile );
193         }
194         else if ( line.startsWith( BRANCH_NICK_TOKEN ) )
195         {
196             //ignore
197         }
198         else
199         {
200             if ( getLogger().isWarnEnabled() )
201             {
202                 getLogger().warn( "Could not figure out of: " + line );
203             }
204         }
205     }
206 }