4 const char *tag_type = "tag";
6 struct tag *lookup_tag(unsigned char *sha1)
8 struct object *obj = lookup_object(sha1);
10 struct tag *ret = xmalloc(sizeof(struct tag));
11 memset(ret, 0, sizeof(struct tag));
12 created_object(sha1, &ret->object);
13 ret->object.type = tag_type;
16 if (obj->type != tag_type) {
17 error("Object %s is a %s, not a tree",
18 sha1_to_hex(sha1), obj->type);
21 return (struct tag *) obj;
24 int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
27 unsigned char object[20];
28 const char *type_line, *tag_line, *sig_line;
30 if (item->object.parsed)
32 item->object.parsed = 1;
36 if (memcmp("object ", data, 7) || get_sha1_hex(data + 7, object))
39 item->tagged = parse_object(object);
41 add_ref(&item->object, item->tagged);
43 type_line = data + 48;
44 if (memcmp("\ntype ", type_line-1, 6))
47 tag_line = strchr(type_line, '\n');
48 if (!tag_line || memcmp("tag ", ++tag_line, 4))
51 sig_line = strchr(tag_line, '\n');
56 typelen = tag_line - type_line - strlen("type \n");
59 taglen = sig_line - tag_line - strlen("tag \n");
60 item->tag = xmalloc(taglen + 1);
61 memcpy(item->tag, tag_line + 4, taglen);
62 item->tag[taglen] = '\0';
67 int parse_tag(struct tag *item)
74 if (item->object.parsed)
76 data = read_sha1_file(item->object.sha1, type, &size);
78 return error("Could not read %s",
79 sha1_to_hex(item->object.sha1));
80 if (strcmp(type, tag_type)) {
82 return error("Object %s not a tag",
83 sha1_to_hex(item->object.sha1));
85 ret = parse_tag_buffer(item, data, size);