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Commit | Line | Data |
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6eb8ae00 DB |
1 | #ifndef OBJECT_H |
2 | #define OBJECT_H | |
3 | ||
4 | struct object_list { | |
5 | struct object *item; | |
6 | struct object_list *next; | |
7 | }; | |
8 | ||
1f1e895f LT |
9 | struct object_array { |
10 | unsigned int nr; | |
11 | unsigned int alloc; | |
12 | struct object_array_entry { | |
13 | struct object *item; | |
31faeb20 MH |
14 | /* |
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 | |
18 | * empty string. | |
19 | */ | |
20 | char *name; | |
9e0c3c4f | 21 | char *path; |
e5709a4a | 22 | unsigned mode; |
1f1e895f LT |
23 | } *objects; |
24 | }; | |
25 | ||
3cd47459 TF |
26 | #define OBJECT_ARRAY_INIT { 0, 0, NULL } |
27 | ||
885a86ab | 28 | #define TYPE_BITS 3 |
208acbfb NTND |
29 | /* |
30 | * object flag allocation: | |
1b32dece | 31 | * revision.h: 0---------10 26 |
208acbfb NTND |
32 | * fetch-pack.c: 0---4 |
33 | * walker.c: 0-2 | |
34 | * upload-pack.c: 11----------------19 | |
35 | * builtin/blame.c: 12-13 | |
36 | * bisect.c: 16 | |
37 | * bundle.c: 16 | |
38 | * http-push.c: 16-----19 | |
39 | * commit.c: 16-----19 | |
40 | * sha1_name.c: 20 | |
41 | */ | |
885a86ab LT |
42 | #define FLAG_BITS 27 |
43 | ||
1974632c LT |
44 | /* |
45 | * The object type is stored in 3 bits. | |
46 | */ | |
6eb8ae00 DB |
47 | struct object { |
48 | unsigned parsed : 1; | |
49 | unsigned used : 1; | |
885a86ab LT |
50 | unsigned type : TYPE_BITS; |
51 | unsigned flags : FLAG_BITS; | |
6eb8ae00 | 52 | unsigned char sha1[20]; |
6eb8ae00 DB |
53 | }; |
54 | ||
df843662 | 55 | extern const char *typename(unsigned int type); |
fe8e3b71 JS |
56 | extern int type_from_string_gently(const char *str, ssize_t, int gentle); |
57 | #define type_from_string(str) type_from_string_gently(str, -1, 0) | |
885a86ab | 58 | |
33bef7ea MH |
59 | /* |
60 | * Return the current number of buckets in the object hashmap. | |
61 | */ | |
fc046a75 | 62 | extern unsigned int get_max_object_index(void); |
33bef7ea MH |
63 | |
64 | /* | |
65 | * Return the object from the specified bucket in the object hashmap. | |
66 | */ | |
fc046a75 | 67 | extern struct object *get_indexed_object(unsigned int); |
3e4339e6 | 68 | |
628b06d7 JH |
69 | /* |
70 | * This can be used to see if we have heard of the object before, but | |
71 | * it can return "yes we have, and here is a half-initialised object" | |
72 | * for an object that we haven't loaded/parsed yet. | |
73 | * | |
74 | * When parsing a commit to create an in-core commit object, its | |
75 | * parents list holds commit objects that represent its parents, but | |
76 | * they are expected to be lazily initialized and do not know what | |
77 | * their trees or parents are yet. When this function returns such a | |
78 | * half-initialised objects, the caller is expected to initialize them | |
79 | * by calling parse_object() on them. | |
80 | */ | |
5d6ccf5c | 81 | struct object *lookup_object(const unsigned char *sha1); |
6eb8ae00 | 82 | |
d36f51c1 | 83 | extern void *create_object(const unsigned char *sha1, void *obj); |
6eb8ae00 | 84 | |
8ff226a9 JK |
85 | void *object_as_type(struct object *obj, enum object_type type, int quiet); |
86 | ||
75a95490 JK |
87 | /* |
88 | * Returns the object, having parsed it to find out what it is. | |
89 | * | |
90 | * Returns NULL if the object is missing or corrupt. | |
91 | */ | |
5d6ccf5c | 92 | struct object *parse_object(const unsigned char *sha1); |
e9eefa67 | 93 | |
75a95490 JK |
94 | /* |
95 | * Like parse_object, but will die() instead of returning NULL. If the | |
96 | * "name" parameter is not NULL, it is included in the error message | |
97 | * (otherwise, the sha1 hex is given). | |
98 | */ | |
99 | struct object *parse_object_or_die(const unsigned char *sha1, const char *name); | |
100 | ||
9f613ddd JH |
101 | /* Given the result of read_sha1_file(), returns the object after |
102 | * parsing it. eaten_p indicates if the object has a borrowed copy | |
103 | * of buffer and the caller should not free() it. | |
104 | */ | |
21666f1a | 105 | struct object *parse_object_buffer(const unsigned char *sha1, enum object_type type, unsigned long size, void *buffer, int *eaten_p); |
9f613ddd | 106 | |
66e481b0 DB |
107 | /** Returns the object, with potentially excess memory allocated. **/ |
108 | struct object *lookup_unknown_object(const unsigned char *sha1); | |
109 | ||
a6080a0a | 110 | struct object_list *object_list_insert(struct object *item, |
66e481b0 DB |
111 | struct object_list **list_p); |
112 | ||
66e481b0 DB |
113 | int object_list_contains(struct object_list *list, struct object *obj); |
114 | ||
1f1e895f LT |
115 | /* Object array handling .. */ |
116 | void add_object_array(struct object *obj, const char *name, struct object_array *array); | |
9e0c3c4f | 117 | void add_object_array_with_path(struct object *obj, const char *name, struct object_array *array, unsigned mode, const char *path); |
aeb4a51e MH |
118 | |
119 | typedef int (*object_array_each_func_t)(struct object_array_entry *, void *); | |
120 | ||
121 | /* | |
122 | * Apply want to each entry in array, retaining only the entries for | |
123 | * which the function returns true. Preserve the order of the entries | |
124 | * that are retained. | |
125 | */ | |
126 | void object_array_filter(struct object_array *array, | |
127 | object_array_each_func_t want, void *cb_data); | |
128 | ||
1506510c MH |
129 | /* |
130 | * Remove from array all but the first entry with a given name. | |
131 | * Warning: this function uses an O(N^2) algorithm. | |
132 | */ | |
133 | void object_array_remove_duplicates(struct object_array *array); | |
1f1e895f | 134 | |
46be8231 JK |
135 | /* |
136 | * Remove any objects from the array, freeing all used memory; afterwards | |
137 | * the array is ready to store more objects with add_object_array(). | |
138 | */ | |
139 | void object_array_clear(struct object_array *array); | |
140 | ||
bcc0a3ea HV |
141 | void clear_object_flags(unsigned flags); |
142 | ||
6eb8ae00 | 143 | #endif /* OBJECT_H */ |