struct object *parse_object(unsigned char *sha1)
{
unsigned long mapsize;
void *map = map_sha1_file(sha1, &mapsize);
if (map) {
char type[100];
unsigned long size;
void *buffer = unpack_sha1_file(map, mapsize, type, &size);
if (!buffer)
return NULL;
if (check_sha1_signature(sha1, buffer, size, type) < 0)
printf("sha1 mismatch %s\n", sha1_to_hex(sha1));
munmap(map, mapsize);
if (!strcmp(type, "blob")) {
struct blob *ret = lookup_blob(sha1);
parse_blob(ret);
return &ret->object;
} else if (!strcmp(type, "tree")) {
struct tree *ret = lookup_tree(sha1);
parse_tree(ret);
return &ret->object;
} else if (!strcmp(type, "commit")) {
struct commit *ret = lookup_commit(sha1);
parse_commit(ret);
return &ret->object;
} else if (!strcmp(type, "tag")) {
struct tag *ret = lookup_tag(sha1);
parse_tag(ret);
return &ret->object;
} else {
return NULL;
}
}
return NULL;
}
/*
* We refuse to tag something we can't verify. Just because.
*/
static int verify_object(unsigned char *sha1, const char *expected_type)
{
int ret = -1;
enum object_type type;
unsigned long size;
void *buffer = read_sha1_file(sha1, &type, &size);
if (buffer) {
if (type == type_from_string(expected_type))
ret = check_sha1_signature(sha1, buffer, size, expected_type);
free(buffer);
}
return ret;
}
