6 const char *commit_type
= "commit";
8 struct commit
*lookup_commit(unsigned char *sha1
)
10 struct object
*obj
= lookup_object(sha1
);
12 struct commit
*ret
= malloc(sizeof(struct commit
));
13 memset(ret
, 0, sizeof(struct commit
));
14 created_object(sha1
, &ret
->object
);
17 if (obj
->parsed
&& obj
->type
!= commit_type
) {
18 error("Object %s is a %s, not a commit",
19 sha1_to_hex(sha1
), obj
->type
);
22 return (struct commit
*) obj
;
25 static unsigned long parse_commit_date(const char *buf
)
29 if (memcmp(buf
, "author", 6))
31 while (*buf
++ != '\n')
33 if (memcmp(buf
, "committer", 9))
37 date
= strtoul(buf
, NULL
, 10);
38 if (date
== ULONG_MAX
)
43 int parse_commit(struct commit
*item
)
46 void * buffer
, *bufptr
;
48 unsigned char parent
[20];
49 if (item
->object
.parsed
)
51 item
->object
.parsed
= 1;
52 buffer
= bufptr
= read_sha1_file(item
->object
.sha1
, type
, &size
);
54 return error("Could not read %s",
55 sha1_to_hex(item
->object
.sha1
));
56 if (strcmp(type
, commit_type
))
57 return error("Object %s not a commit",
58 sha1_to_hex(item
->object
.sha1
));
59 item
->object
.type
= commit_type
;
60 get_sha1_hex(bufptr
+ 5, parent
);
61 item
->tree
= lookup_tree(parent
);
62 add_ref(&item
->object
, &item
->tree
->object
);
63 bufptr
+= 46; /* "tree " + "hex sha1" + "\n" */
64 while (!memcmp(bufptr
, "parent ", 7) &&
65 !get_sha1_hex(bufptr
+ 7, parent
)) {
66 struct commit_list
*new_parent
=
67 malloc(sizeof(struct commit_list
));
68 new_parent
->next
= item
->parents
;
69 new_parent
->item
= lookup_commit(parent
);
70 add_ref(&item
->object
, &new_parent
->item
->object
);
71 item
->parents
= new_parent
;
74 item
->date
= parse_commit_date(bufptr
);
79 void free_commit_list(struct commit_list
*list
)
82 struct commit_list
*temp
= list
;