13 static int obj_allocs;
15 static int find_object(unsigned char *sha1)
17 int first = 0, last = nr_objs;
19 while (first < last) {
20 int next = (first + last) / 2;
21 struct object *obj = objs[next];
24 cmp = memcmp(sha1, obj->sha1, 20);
36 struct object *lookup_object(unsigned char *sha1)
38 int pos = find_object(sha1);
44 void created_object(unsigned char *sha1, struct object *obj)
46 int pos = find_object(sha1);
49 memcpy(obj->sha1, sha1, 20);
55 die("Inserting %s twice\n", sha1_to_hex(sha1));
58 if (obj_allocs == nr_objs) {
59 obj_allocs = alloc_nr(obj_allocs);
60 objs = xrealloc(objs, obj_allocs * sizeof(struct object *));
63 /* Insert it into the right place */
64 memmove(objs + pos + 1, objs + pos, (nr_objs - pos) *
65 sizeof(struct object *));
71 void add_ref(struct object *refer, struct object *target)
73 struct object_list **pp = &refer->refs;
74 struct object_list *p;
76 while ((p = *pp) != NULL) {
77 if (p->item == target)
83 p = xmalloc(sizeof(*p));
89 void mark_reachable(struct object *obj, unsigned int mask)
91 struct object_list *p = obj->refs;
93 /* If we've been here already, don't bother */
94 if (obj->flags & mask)
98 mark_reachable(p->item, mask);
103 struct object *parse_object(unsigned char *sha1)
105 unsigned long mapsize;
106 void *map = map_sha1_file(sha1, &mapsize);
112 void *buffer = unpack_sha1_file(map, mapsize, type, &size);
113 munmap(map, mapsize);
116 is_delta = !strcmp(type, "delta");
117 if (!is_delta && check_sha1_signature(sha1, buffer, size, type) < 0)
118 printf("sha1 mismatch %s\n", sha1_to_hex(sha1));
120 struct delta *delta = lookup_delta(sha1);
121 parse_delta_buffer(delta, buffer, size);
122 obj = (struct object *) delta;
123 } else if (!strcmp(type, "blob")) {
124 struct blob *blob = lookup_blob(sha1);
125 parse_blob_buffer(blob, buffer, size);
127 } else if (!strcmp(type, "tree")) {
128 struct tree *tree = lookup_tree(sha1);
129 parse_tree_buffer(tree, buffer, size);
131 } else if (!strcmp(type, "commit")) {
132 struct commit *commit = lookup_commit(sha1);
133 parse_commit_buffer(commit, buffer, size);
134 obj = &commit->object;
135 } else if (!strcmp(type, "tag")) {
136 struct tag *tag = lookup_tag(sha1);
137 parse_tag_buffer(tag, buffer, size);