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1 | #include "cache.h" | |
2 | #include "notes-cache.h" | |
3 | #include "object-store.h" | |
4 | #include "repository.h" | |
5 | #include "commit.h" | |
6 | #include "refs.h" | |
7 | ||
8 | static int notes_cache_match_validity(struct repository *r, | |
9 | const char *ref, | |
10 | const char *validity) | |
11 | { | |
12 | struct object_id oid; | |
13 | struct commit *commit; | |
14 | struct pretty_print_context pretty_ctx; | |
15 | struct strbuf msg = STRBUF_INIT; | |
16 | int ret; | |
17 | ||
18 | if (read_ref(ref, &oid) < 0) | |
19 | return 0; | |
20 | ||
21 | commit = lookup_commit_reference_gently(r, &oid, 1); | |
22 | if (!commit) | |
23 | return 0; | |
24 | ||
25 | memset(&pretty_ctx, 0, sizeof(pretty_ctx)); | |
26 | format_commit_message(commit, "%s", &msg, &pretty_ctx); | |
27 | strbuf_trim(&msg); | |
28 | ||
29 | ret = !strcmp(msg.buf, validity); | |
30 | strbuf_release(&msg); | |
31 | ||
32 | return ret; | |
33 | } | |
34 | ||
35 | void notes_cache_init(struct repository *r, struct notes_cache *c, | |
36 | const char *name, const char *validity) | |
37 | { | |
38 | struct strbuf ref = STRBUF_INIT; | |
39 | int flags = NOTES_INIT_WRITABLE; | |
40 | ||
41 | memset(c, 0, sizeof(*c)); | |
42 | c->validity = xstrdup(validity); | |
43 | ||
44 | strbuf_addf(&ref, "refs/notes/%s", name); | |
45 | if (!notes_cache_match_validity(r, ref.buf, validity)) | |
46 | flags |= NOTES_INIT_EMPTY; | |
47 | init_notes(&c->tree, ref.buf, combine_notes_overwrite, flags); | |
48 | strbuf_release(&ref); | |
49 | } | |
50 | ||
51 | int notes_cache_write(struct notes_cache *c) | |
52 | { | |
53 | struct object_id tree_oid, commit_oid; | |
54 | ||
55 | if (!c || !c->tree.initialized || !c->tree.update_ref || | |
56 | !*c->tree.update_ref) | |
57 | return -1; | |
58 | if (!c->tree.dirty) | |
59 | return 0; | |
60 | ||
61 | if (write_notes_tree(&c->tree, &tree_oid)) | |
62 | return -1; | |
63 | if (commit_tree(c->validity, strlen(c->validity), &tree_oid, NULL, | |
64 | &commit_oid, NULL, NULL) < 0) | |
65 | return -1; | |
66 | if (update_ref("update notes cache", c->tree.update_ref, &commit_oid, | |
67 | NULL, 0, UPDATE_REFS_QUIET_ON_ERR) < 0) | |
68 | return -1; | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
73 | char *notes_cache_get(struct notes_cache *c, struct object_id *key_oid, | |
74 | size_t *outsize) | |
75 | { | |
76 | const struct object_id *value_oid; | |
77 | enum object_type type; | |
78 | char *value; | |
79 | unsigned long size; | |
80 | ||
81 | value_oid = get_note(&c->tree, key_oid); | |
82 | if (!value_oid) | |
83 | return NULL; | |
84 | value = read_object_file(value_oid, &type, &size); | |
85 | ||
86 | *outsize = size; | |
87 | return value; | |
88 | } | |
89 | ||
90 | int notes_cache_put(struct notes_cache *c, struct object_id *key_oid, | |
91 | const char *data, size_t size) | |
92 | { | |
93 | struct object_id value_oid; | |
94 | ||
95 | if (write_object_file(data, size, "blob", &value_oid) < 0) | |
96 | return -1; | |
97 | return add_note(&c->tree, key_oid, &value_oid, NULL); | |
98 | } |