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100644 97 lines (78 sloc) 2.282 kB
a941d5e @peff introduce notes-cache interface
peff authored
1 #include "cache.h"
2 #include "notes-cache.h"
3 #include "commit.h"
4 #include "refs.h"
5
6 static int notes_cache_match_validity(const char *ref, const char *validity)
7 {
8 unsigned char sha1[20];
9 struct commit *commit;
10 struct pretty_print_context pretty_ctx;
11 struct strbuf msg = STRBUF_INIT;
12 int ret;
13
14 if (read_ref(ref, sha1) < 0)
15 return 0;
16
17 commit = lookup_commit_reference_gently(sha1, 1);
18 if (!commit)
19 return 0;
20
21 memset(&pretty_ctx, 0, sizeof(pretty_ctx));
22 format_commit_message(commit, "%s", &msg, &pretty_ctx);
23 strbuf_trim(&msg);
24
25 ret = !strcmp(msg.buf, validity);
26 strbuf_release(&msg);
27
28 return ret;
29 }
30
31 void notes_cache_init(struct notes_cache *c, const char *name,
32 const char *validity)
33 {
34 struct strbuf ref = STRBUF_INIT;
35 int flags = 0;
36
37 memset(c, 0, sizeof(*c));
38 c->validity = xstrdup(validity);
39
40 strbuf_addf(&ref, "refs/notes/%s", name);
41 if (!notes_cache_match_validity(ref.buf, validity))
42 flags = NOTES_INIT_EMPTY;
43 init_notes(&c->tree, ref.buf, combine_notes_overwrite, flags);
44 strbuf_release(&ref);
45 }
46
47 int notes_cache_write(struct notes_cache *c)
48 {
49 unsigned char tree_sha1[20];
50 unsigned char commit_sha1[20];
13f8b72 @pclouds Convert commit_tree() to take strbuf as message
pclouds authored
51 struct strbuf msg = STRBUF_INIT;
a941d5e @peff introduce notes-cache interface
peff authored
52
53 if (!c || !c->tree.initialized || !c->tree.ref || !*c->tree.ref)
54 return -1;
55 if (!c->tree.dirty)
56 return 0;
57
58 if (write_notes_tree(&c->tree, tree_sha1))
59 return -1;
13f8b72 @pclouds Convert commit_tree() to take strbuf as message
pclouds authored
60 strbuf_attach(&msg, c->validity,
61 strlen(c->validity), strlen(c->validity) + 1);
5de89d3 @gitster Merge branch 'jc/show-sig'
gitster authored
62 if (commit_tree(&msg, tree_sha1, NULL, commit_sha1, NULL, NULL) < 0)
a941d5e @peff introduce notes-cache interface
peff authored
63 return -1;
64 if (update_ref("update notes cache", c->tree.ref, commit_sha1, NULL,
65 0, QUIET_ON_ERR) < 0)
66 return -1;
67
68 return 0;
69 }
70
71 char *notes_cache_get(struct notes_cache *c, unsigned char key_sha1[20],
72 size_t *outsize)
73 {
74 const unsigned char *value_sha1;
75 enum object_type type;
76 char *value;
77 unsigned long size;
78
79 value_sha1 = get_note(&c->tree, key_sha1);
80 if (!value_sha1)
81 return NULL;
82 value = read_sha1_file(value_sha1, &type, &size);
83
84 *outsize = size;
85 return value;
86 }
87
88 int notes_cache_put(struct notes_cache *c, unsigned char key_sha1[20],
89 const char *data, size_t size)
90 {
91 unsigned char value_sha1[20];
92
93 if (write_sha1_file(data, size, "blob", value_sha1) < 0)
94 return -1;
180619a @jherland notes.h/c: Propagate combine_notes_fn return value to add_note() and …
jherland authored
95 return add_note(&c->tree, key_sha1, value_sha1, NULL);
a941d5e @peff introduce notes-cache interface
peff authored
96 }
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