6 struct object_list
*next
;
12 struct object_array_entry
{
15 * name or NULL. If non-NULL, the memory pointed to
16 * is owned by this object *except* if it points at
17 * object_array_slopbuf, which is a static copy of the
22 struct object_context
*context
;
26 #define OBJECT_ARRAY_INIT { 0, 0, NULL }
30 * object flag allocation:
31 * revision.h: 0---------10
34 * upload-pack.c: 11----------------19
35 * builtin/blame.c: 12-13
38 * http-push.c: 16-----19
45 * The object type is stored in 3 bits.
50 unsigned type
: TYPE_BITS
;
51 unsigned flags
: FLAG_BITS
;
52 unsigned char sha1
[20];
55 extern const char *typename(unsigned int type
);
56 extern int type_from_string(const char *str
);
58 extern unsigned int get_max_object_index(void);
59 extern struct object
*get_indexed_object(unsigned int);
62 * This can be used to see if we have heard of the object before, but
63 * it can return "yes we have, and here is a half-initialised object"
64 * for an object that we haven't loaded/parsed yet.
66 * When parsing a commit to create an in-core commit object, its
67 * parents list holds commit objects that represent its parents, but
68 * they are expected to be lazily initialized and do not know what
69 * their trees or parents are yet. When this function returns such a
70 * half-initialised objects, the caller is expected to initialize them
71 * by calling parse_object() on them.
73 struct object
*lookup_object(const unsigned char *sha1
);
75 extern void *create_object(const unsigned char *sha1
, int type
, void *obj
);
78 * Returns the object, having parsed it to find out what it is.
80 * Returns NULL if the object is missing or corrupt.
82 struct object
*parse_object(const unsigned char *sha1
);
85 * Like parse_object, but will die() instead of returning NULL. If the
86 * "name" parameter is not NULL, it is included in the error message
87 * (otherwise, the sha1 hex is given).
89 struct object
*parse_object_or_die(const unsigned char *sha1
, const char *name
);
91 /* Given the result of read_sha1_file(), returns the object after
92 * parsing it. eaten_p indicates if the object has a borrowed copy
93 * of buffer and the caller should not free() it.
95 struct object
*parse_object_buffer(const unsigned char *sha1
, enum object_type type
, unsigned long size
, void *buffer
, int *eaten_p
);
97 /** Returns the object, with potentially excess memory allocated. **/
98 struct object
*lookup_unknown_object(const unsigned char *sha1
);
100 struct object_list
*object_list_insert(struct object
*item
,
101 struct object_list
**list_p
);
103 int object_list_contains(struct object_list
*list
, struct object
*obj
);
105 /* Object array handling .. */
106 void add_object_array(struct object
*obj
, const char *name
, struct object_array
*array
);
107 void add_object_array_with_mode(struct object
*obj
, const char *name
, struct object_array
*array
, unsigned mode
);
108 void add_object_array_with_context(struct object
*obj
, const char *name
, struct object_array
*array
, struct object_context
*context
);
110 typedef int (*object_array_each_func_t
)(struct object_array_entry
*, void *);
113 * Apply want to each entry in array, retaining only the entries for
114 * which the function returns true. Preserve the order of the entries
117 void object_array_filter(struct object_array
*array
,
118 object_array_each_func_t want
, void *cb_data
);
121 * Remove from array all but the first entry with a given name.
122 * Warning: this function uses an O(N^2) algorithm.
124 void object_array_remove_duplicates(struct object_array
*array
);
126 void clear_object_flags(unsigned flags
);
128 #endif /* OBJECT_H */