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1 | #include "cache.h" | |
2 | #include "commit.h" | |
3 | #include "tag.h" | |
4 | ||
5 | static int is_shallow = -1; | |
6 | ||
7 | int register_shallow(const unsigned char *sha1) | |
8 | { | |
9 | struct commit_graft *graft = | |
10 | xmalloc(sizeof(struct commit_graft)); | |
11 | struct commit *commit = lookup_commit(sha1); | |
12 | ||
13 | hashcpy(graft->sha1, sha1); | |
14 | graft->nr_parent = -1; | |
15 | if (commit && commit->object.parsed) | |
16 | commit->parents = NULL; | |
17 | return register_commit_graft(graft, 0); | |
18 | } | |
19 | ||
20 | int is_repository_shallow() | |
21 | { | |
22 | FILE *fp; | |
23 | char buf[1024]; | |
24 | ||
25 | if (is_shallow >= 0) | |
26 | return is_shallow; | |
27 | ||
28 | fp = fopen(git_path("shallow"), "r"); | |
29 | if (!fp) { | |
30 | is_shallow = 0; | |
31 | return is_shallow; | |
32 | } | |
33 | is_shallow = 1; | |
34 | ||
35 | while (fgets(buf, sizeof(buf), fp)) { | |
36 | unsigned char sha1[20]; | |
37 | if (get_sha1_hex(buf, sha1)) | |
38 | die("bad shallow line: %s", buf); | |
39 | register_shallow(sha1); | |
40 | } | |
41 | fclose(fp); | |
42 | return is_shallow; | |
43 | } | |
44 | ||
45 | struct commit_list *get_shallow_commits(struct object_array *heads, int depth, | |
46 | int shallow_flag, int not_shallow_flag) | |
47 | { | |
48 | int i = 0, cur_depth = 0; | |
49 | struct commit_list *result = NULL; | |
50 | struct object_array stack = {0, 0, NULL}; | |
51 | struct commit *commit = NULL; | |
52 | ||
53 | while (commit || i < heads->nr || stack.nr) { | |
54 | struct commit_list *p; | |
55 | if (!commit) { | |
56 | if (i < heads->nr) { | |
57 | commit = (struct commit *) | |
58 | deref_tag(heads->objects[i++].item, NULL, 0); | |
59 | if (commit->object.type != OBJ_COMMIT) { | |
60 | commit = NULL; | |
61 | continue; | |
62 | } | |
63 | if (!commit->util) | |
64 | commit->util = xmalloc(sizeof(int)); | |
65 | *(int *)commit->util = 0; | |
66 | cur_depth = 0; | |
67 | } else { | |
68 | commit = (struct commit *) | |
69 | stack.objects[--stack.nr].item; | |
70 | cur_depth = *(int *)commit->util; | |
71 | } | |
72 | } | |
73 | parse_commit(commit); | |
74 | commit->object.flags |= not_shallow_flag; | |
75 | cur_depth++; | |
76 | for (p = commit->parents, commit = NULL; p; p = p->next) { | |
77 | if (!p->item->util) { | |
78 | int *pointer = xmalloc(sizeof(int)); | |
79 | p->item->util = pointer; | |
80 | *pointer = cur_depth; | |
81 | } else { | |
82 | int *pointer = p->item->util; | |
83 | if (cur_depth >= *pointer) | |
84 | continue; | |
85 | *pointer = cur_depth; | |
86 | } | |
87 | if (cur_depth < depth) { | |
88 | if (p->next) | |
89 | add_object_array(&p->item->object, | |
90 | NULL, &stack); | |
91 | else { | |
92 | commit = p->item; | |
93 | cur_depth = *(int *)commit->util; | |
94 | } | |
95 | } else { | |
96 | commit_list_insert(p->item, &result); | |
97 | p->item->object.flags |= shallow_flag; | |
98 | } | |
99 | } | |
100 | } | |
101 | ||
102 | return result; | |
103 | } | |
104 |