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lightning-sunbird  0.9+nobinonly
RevisionTable.java
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00001 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
00002  *
00003  * The contents of this file are subject to the Netscape Public
00004  * License Version 1.1 (the "License"); you may not use this file
00005  * except in compliance with the License. You may obtain a copy of
00006  * the License at http://www.mozilla.org/NPL/
00007  *
00008  * Software distributed under the License is distributed on an "AS
00009  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
00010  * implied. See the License for the specific language governing
00011  * rights and limitations under the License.
00012  *
00013  * The Original Code is Mozilla Communicator client code, released
00014  * March 31, 1998.
00015  *
00016  * The Initial Developer of the Original Code is Netscape
00017  * Communications Corporation.  Portions created by Netscape are
00018  * Copyright (C) 1998 Netscape Communications Corporation. All
00019  * Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *
00023  * Patrick C. Beard <beard@netscape.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the
00026  * terms of the GNU Public License (the "GPL"), in which case the
00027  * provisions of the GPL are applicable instead of those above.
00028  * If you wish to allow use of your version of this file only
00029  * under the terms of the GPL and not to allow others to use your
00030  * version of this file under the NPL, indicate your decision by
00031  * deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL.  If you do not delete
00033  * the provisions above, a recipient may use your version of this
00034  * file under either the NPL or the GPL.
00035  */
00036 
00037 import java.io.*;
00038 import java.util.*;
00039 
00043 public class RevisionTable {
00044        private Hashtable revisions = new Hashtable();
00045 
00046        public String getRevision(String path) throws IOException {
00047               String revision = (String) revisions.get(path);
00048               if (revision == null) {
00049                      int lastSlash = path.lastIndexOf('/');
00050                      String dirPath = path.substring(0, lastSlash + 1);
00051                      if (!readEntries(dirPath))
00052                             revisions.put(path, "");
00053                      revision = (String) revisions.get(path);
00054               }
00055               return revision;
00056        }
00057        
00062        private boolean readEntries(String dirPath) throws IOException {
00063               File entriesFile = new File(dirPath + "CVS/Entries");
00064               if (entriesFile.exists()) {        
00065                      BufferedReader entries = new BufferedReader(new InputStreamReader(new FileInputStream(entriesFile)));
00066                      for (String line = entries.readLine(); line != null; line = entries.readLine()) {
00067                             if (line.charAt(0) == '/') {
00068                                    int secondSlash = line.indexOf('/', 1);
00069                                    String fileName = line.substring(1, secondSlash);
00070                                    int thirdSlash = line.indexOf('/', secondSlash + 1);
00071                                    String revision = line.substring(secondSlash + 1, thirdSlash);
00072                                    revisions.put(dirPath + fileName, revision);
00073                             }
00074                      }
00075                      entries.close();
00076                      return true;
00077               }
00078               return false;
00079        }
00080 }
00081