tree: add repository argument to lookup_tree
[git/git.git] / notes-cache.c
CommitLineData
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1#include "cache.h"
2#include "notes-cache.h"
cbd53a21 3#include "object-store.h"
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4#include "commit.h"
5#include "refs.h"
6
7static int notes_cache_match_validity(const char *ref, const char *validity)
8{
569aa376 9 struct object_id oid;
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10 struct commit *commit;
11 struct pretty_print_context pretty_ctx;
12 struct strbuf msg = STRBUF_INIT;
13 int ret;
14
34c290a6 15 if (read_ref(ref, &oid) < 0)
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16 return 0;
17
bc83266a 18 commit = lookup_commit_reference_gently(&oid, 1);
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19 if (!commit)
20 return 0;
21
22 memset(&pretty_ctx, 0, sizeof(pretty_ctx));
23 format_commit_message(commit, "%s", &msg, &pretty_ctx);
24 strbuf_trim(&msg);
25
26 ret = !strcmp(msg.buf, validity);
27 strbuf_release(&msg);
28
29 return ret;
30}
31
32void notes_cache_init(struct notes_cache *c, const char *name,
33 const char *validity)
34{
35 struct strbuf ref = STRBUF_INIT;
ee76f92f 36 int flags = NOTES_INIT_WRITABLE;
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37
38 memset(c, 0, sizeof(*c));
39 c->validity = xstrdup(validity);
40
41 strbuf_addf(&ref, "refs/notes/%s", name);
42 if (!notes_cache_match_validity(ref.buf, validity))
ee76f92f 43 flags |= NOTES_INIT_EMPTY;
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44 init_notes(&c->tree, ref.buf, combine_notes_overwrite, flags);
45 strbuf_release(&ref);
46}
47
48int notes_cache_write(struct notes_cache *c)
49{
569aa376 50 struct object_id tree_oid, commit_oid;
a941d5e3 51
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52 if (!c || !c->tree.initialized || !c->tree.update_ref ||
53 !*c->tree.update_ref)
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54 return -1;
55 if (!c->tree.dirty)
56 return 0;
57
bbca96d5 58 if (write_notes_tree(&c->tree, &tree_oid))
a941d5e3 59 return -1;
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60 if (commit_tree(c->validity, strlen(c->validity), &tree_oid, NULL,
61 &commit_oid, NULL, NULL) < 0)
a941d5e3 62 return -1;
ae077771 63 if (update_ref("update notes cache", c->tree.update_ref, &commit_oid,
ee76f92f 64 NULL, 0, UPDATE_REFS_QUIET_ON_ERR) < 0)
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65 return -1;
66
67 return 0;
68}
69
569aa376 70char *notes_cache_get(struct notes_cache *c, struct object_id *key_oid,
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71 size_t *outsize)
72{
9ef72230 73 const struct object_id *value_oid;
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74 enum object_type type;
75 char *value;
76 unsigned long size;
77
5ee8a954 78 value_oid = get_note(&c->tree, key_oid);
9ef72230 79 if (!value_oid)
a941d5e3 80 return NULL;
b4f5aca4 81 value = read_object_file(value_oid, &type, &size);
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82
83 *outsize = size;
84 return value;
85}
86
569aa376 87int notes_cache_put(struct notes_cache *c, struct object_id *key_oid,
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88 const char *data, size_t size)
89{
569aa376 90 struct object_id value_oid;
a941d5e3 91
a09c985e 92 if (write_object_file(data, size, "blob", &value_oid) < 0)
a941d5e3 93 return -1;
5ee8a954 94 return add_note(&c->tree, key_oid, &value_oid, NULL);
a941d5e3 95}