Make release tarballs friendlier to older tar versions
[git/git.git] / object.h
1 #ifndef OBJECT_H
2 #define OBJECT_H
3
4 struct object_list {
5 struct object *item;
6 struct object_list *next;
7 const char *name;
8 };
9
10 struct object_refs {
11 unsigned count;
12 struct object *ref[FLEX_ARRAY]; /* more */
13 };
14
15 #define TYPE_BITS 3
16 #define FLAG_BITS 27
17
18 #define TYPE_NONE 0
19 #define TYPE_BLOB 1
20 #define TYPE_TREE 2
21 #define TYPE_COMMIT 3
22 #define TYPE_TAG 4
23 #define TYPE_BAD 5
24
25 struct object {
26 unsigned parsed : 1;
27 unsigned used : 1;
28 unsigned type : TYPE_BITS;
29 unsigned flags : FLAG_BITS;
30 unsigned char sha1[20];
31 struct object_refs *refs;
32 };
33
34 extern int track_object_refs;
35 extern int obj_allocs;
36 extern struct object **objs;
37 extern const char *type_names[];
38
39 static inline const char *typename(unsigned int type)
40 {
41 return type_names[type > TYPE_TAG ? TYPE_BAD : type];
42 }
43
44 /** Internal only **/
45 struct object *lookup_object(const unsigned char *sha1);
46
47 /** Returns the object, having looked it up as being the given type. **/
48 struct object *lookup_object_type(const unsigned char *sha1, const char *type);
49
50 void created_object(const unsigned char *sha1, struct object *obj);
51
52 /** Returns the object, having parsed it to find out what it is. **/
53 struct object *parse_object(const unsigned char *sha1);
54
55 /** Returns the object, with potentially excess memory allocated. **/
56 struct object *lookup_unknown_object(const unsigned char *sha1);
57
58 struct object_refs *alloc_object_refs(unsigned count);
59 void set_object_refs(struct object *obj, struct object_refs *refs);
60
61 void mark_reachable(struct object *obj, unsigned int mask);
62
63 struct object_list *object_list_insert(struct object *item,
64 struct object_list **list_p);
65
66 void object_list_append(struct object *item,
67 struct object_list **list_p);
68
69 unsigned object_list_length(struct object_list *list);
70
71 int object_list_contains(struct object_list *list, struct object *obj);
72
73 #endif /* OBJECT_H */