src/org/spearce/jgit/lib/Commit.java

   1 package org.spearce.jgit.lib;
   2
   3 import java.io.BufferedReader;
   4 import java.io.IOException;
   5 import java.util.ArrayList;
   6 import java.util.Collections;
   7 import java.util.List;
   8
   9 public class Commit implements Treeish {
  10     private final ObjectDatabase objdb;
  11
  12     private final ObjectId commitId;
  13
  14     private final ObjectId treeId;
  15
  16     private final List parentIds;
  17
  18     private final String author;
  19
  20     private final String committer;
  21
  22     private final String message;
  23
  24     private Tree treeObj;
  25
  26     public Commit(final ObjectDatabase db, final ObjectId id,
  27             final BufferedReader br) throws IOException {
  28         objdb = db;
  29         commitId = id;
  30
  31         final ArrayList tempParents;
  32         final StringBuffer tempMessage;
  33         final char[] readBuf;
  34         int readLen;
  35         String line;
  36
  37         line = br.readLine();
  38         if (line == null || !line.startsWith("tree ")) {
  39             throw new CorruptObjectException("No tree found in commit " + id);
  40         }
  41         treeId = new ObjectId(line.substring("tree ".length()));
  42
  43         tempParents = new ArrayList(2);
  44         for (;;) {
  45             line = br.readLine();
  46             if (line == null) {
  47                 throw new CorruptObjectException("Commit header corrupt " + id);
  48             }
  49             if (line.startsWith("parent ")) {
  50                 tempParents
  51                         .add(new ObjectId(line.substring("parent ".length())));
  52             } else {
  53                 break;
  54             }
  55         }
  56         parentIds = Collections.unmodifiableList(tempParents);
  57
  58         if (line == null || !line.startsWith("author ")) {
  59             throw new CorruptObjectException("No author found in commit " + id);
  60         }
  61         author = line.substring("author ".length());
  62
  63         line = br.readLine();
  64         if (line == null || !line.startsWith("committer ")) {
  65             throw new CorruptObjectException("No committer found in commit "
  66                     + id);
  67         }
  68         committer = line.substring("committer ".length());
  69
  70         line = br.readLine();
  71         if (line == null || !line.equals("")) {
  72             throw new CorruptObjectException(
  73                     "No blank line after header in commit " + id);
  74         }
  75
  76         tempMessage = new StringBuffer();
  77         readBuf = new char[128];
  78         while ((readLen = br.read(readBuf)) > 0) {
  79             tempMessage.append(readBuf, 0, readLen);
  80         }
  81         message = tempMessage.toString();
  82     }
  83
  84     public ObjectId getCommitId() {
  85         return commitId;
  86     }
  87
  88     public ObjectId getTreeId() {
  89         return treeId;
  90     }
  91
  92     public List getTreeEntries() throws IOException {
  93         if (treeObj == null) {
  94             treeObj = objdb.openTree(getTreeId());
  95         }
  96         return treeObj.getTreeEntries();
  97     }
  98
  99     public String getAuthor() {
 100         return author;
 101     }
 102
 103     public String getCommitter() {
 104         return committer;
 105     }
 106
 107     public List getParentIds() {
 108         return parentIds;
 109     }
 110
 111     public String getMessage() {
 112         return message;
 113     }
 114 }