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Commit | Line | Data |
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175785e5 DB |
1 | #include "commit.h" |
2 | #include "cache.h" | |
3 | #include <string.h> | |
4 | ||
5 | const char *commit_type = "commit"; | |
6 | ||
7 | struct commit *lookup_commit(unsigned char *sha1) | |
8 | { | |
9 | struct object *obj = lookup_object(sha1); | |
10 | if (!obj) { | |
11 | struct commit *ret = malloc(sizeof(struct commit)); | |
12 | memset(ret, 0, sizeof(struct commit)); | |
13 | created_object(sha1, &ret->object); | |
14 | return ret; | |
15 | } | |
16 | if (obj->parsed && obj->type != commit_type) { | |
17 | error("Object %s is a %s, not a commit", | |
18 | sha1_to_hex(sha1), obj->type); | |
19 | return NULL; | |
20 | } | |
21 | return (struct commit *) obj; | |
22 | } | |
23 | ||
24 | static unsigned long parse_commit_date(const char *buf) | |
25 | { | |
26 | unsigned long date; | |
27 | ||
28 | if (memcmp(buf, "author", 6)) | |
29 | return 0; | |
30 | while (*buf++ != '\n') | |
31 | /* nada */; | |
32 | if (memcmp(buf, "committer", 9)) | |
33 | return 0; | |
34 | while (*buf++ != '>') | |
35 | /* nada */; | |
36 | date = strtoul(buf, NULL, 10); | |
37 | if (date == ULONG_MAX) | |
38 | date = 0; | |
39 | return date; | |
40 | } | |
41 | ||
42 | int parse_commit(struct commit *item) | |
43 | { | |
44 | char type[20]; | |
45 | void * buffer, *bufptr; | |
46 | unsigned long size; | |
47 | unsigned char parent[20]; | |
48 | if (item->object.parsed) | |
49 | return 0; | |
50 | item->object.parsed = 1; | |
51 | buffer = bufptr = read_sha1_file(item->object.sha1, type, &size); | |
52 | if (!buffer) | |
53 | return error("Could not read %s", | |
54 | sha1_to_hex(item->object.sha1)); | |
55 | if (strcmp(type, commit_type)) | |
56 | return error("Object %s not a commit", | |
57 | sha1_to_hex(item->object.sha1)); | |
58 | item->object.type = commit_type; | |
59 | get_sha1_hex(bufptr + 5, parent); | |
60 | item->tree = lookup_tree(parent); | |
61 | add_ref(&item->object, &item->tree->object); | |
62 | bufptr += 46; /* "tree " + "hex sha1" + "\n" */ | |
63 | while (!memcmp(bufptr, "parent ", 7) && | |
64 | !get_sha1_hex(bufptr + 7, parent)) { | |
65 | struct commit_list *new_parent = | |
66 | malloc(sizeof(struct commit_list)); | |
67 | new_parent->next = item->parents; | |
68 | new_parent->item = lookup_commit(parent); | |
69 | add_ref(&item->object, &new_parent->item->object); | |
70 | item->parents = new_parent; | |
71 | bufptr += 48; | |
72 | } | |
73 | item->date = parse_commit_date(bufptr); | |
74 | free(buffer); | |
75 | return 0; | |
76 | } | |
77 | ||
78 | void free_commit_list(struct commit_list *list) | |
79 | { | |
80 | while (list) { | |
81 | struct commit_list *temp = list; | |
82 | list = temp->next; | |
83 | free(temp); | |
84 | } | |
85 | } |