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git/notes-cache.c
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#include "cache.h" | |
#include "notes-cache.h" | |
#include "commit.h" | |
#include "refs.h" | |
static int notes_cache_match_validity(const char *ref, const char *validity) | |
{ | |
unsigned char sha1[20]; | |
struct commit *commit; | |
struct pretty_print_context pretty_ctx; | |
struct strbuf msg = STRBUF_INIT; | |
int ret; | |
if (read_ref(ref, sha1) < 0) | |
return 0; | |
commit = lookup_commit_reference_gently(sha1, 1); | |
if (!commit) | |
return 0; | |
memset(&pretty_ctx, 0, sizeof(pretty_ctx)); | |
format_commit_message(commit, "%s", &msg, &pretty_ctx); | |
strbuf_trim(&msg); | |
ret = !strcmp(msg.buf, validity); | |
strbuf_release(&msg); | |
return ret; | |
} | |
void notes_cache_init(struct notes_cache *c, const char *name, | |
const char *validity) | |
{ | |
struct strbuf ref = STRBUF_INIT; | |
int flags = NOTES_INIT_WRITABLE; | |
memset(c, 0, sizeof(*c)); | |
c->validity = xstrdup(validity); | |
strbuf_addf(&ref, "refs/notes/%s", name); | |
if (!notes_cache_match_validity(ref.buf, validity)) | |
flags |= NOTES_INIT_EMPTY; | |
init_notes(&c->tree, ref.buf, combine_notes_overwrite, flags); | |
strbuf_release(&ref); | |
} | |
int notes_cache_write(struct notes_cache *c) | |
{ | |
unsigned char tree_sha1[20]; | |
unsigned char commit_sha1[20]; | |
if (!c || !c->tree.initialized || !c->tree.update_ref || | |
!*c->tree.update_ref) | |
return -1; | |
if (!c->tree.dirty) | |
return 0; | |
if (write_notes_tree(&c->tree, tree_sha1)) | |
return -1; | |
if (commit_tree(c->validity, strlen(c->validity), tree_sha1, NULL, | |
commit_sha1, NULL, NULL) < 0) | |
return -1; | |
if (update_ref("update notes cache", c->tree.update_ref, commit_sha1, | |
NULL, 0, UPDATE_REFS_QUIET_ON_ERR) < 0) | |
return -1; | |
return 0; | |
} | |
char *notes_cache_get(struct notes_cache *c, unsigned char key_sha1[20], | |
size_t *outsize) | |
{ | |
const unsigned char *value_sha1; | |
enum object_type type; | |
char *value; | |
unsigned long size; | |
value_sha1 = get_note(&c->tree, key_sha1); | |
if (!value_sha1) | |
return NULL; | |
value = read_sha1_file(value_sha1, &type, &size); | |
*outsize = size; | |
return value; | |
} | |
int notes_cache_put(struct notes_cache *c, unsigned char key_sha1[20], | |
const char *data, size_t size) | |
{ | |
unsigned char value_sha1[20]; | |
if (write_sha1_file(data, size, "blob", value_sha1) < 0) | |
return -1; | |
return add_note(&c->tree, key_sha1, value_sha1, NULL); | |
} |