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92 lines
2.8 KiB
92 lines
2.8 KiB
#ifndef OBJECT_H |
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#define OBJECT_H |
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struct object_list { |
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struct object *item; |
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struct object_list *next; |
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}; |
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struct object_array { |
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unsigned int nr; |
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unsigned int alloc; |
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struct object_array_entry { |
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struct object *item; |
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const char *name; |
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unsigned mode; |
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} *objects; |
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}; |
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#define OBJECT_ARRAY_INIT { 0, 0, NULL } |
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#define TYPE_BITS 3 |
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#define FLAG_BITS 27 |
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/* |
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* The object type is stored in 3 bits. |
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*/ |
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struct object { |
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unsigned parsed : 1; |
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unsigned used : 1; |
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unsigned type : TYPE_BITS; |
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unsigned flags : FLAG_BITS; |
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unsigned char sha1[20]; |
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}; |
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extern const char *typename(unsigned int type); |
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extern int type_from_string(const char *str); |
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extern unsigned int get_max_object_index(void); |
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extern struct object *get_indexed_object(unsigned int); |
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/* |
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* This can be used to see if we have heard of the object before, but |
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* it can return "yes we have, and here is a half-initialised object" |
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* for an object that we haven't loaded/parsed yet. |
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* |
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* When parsing a commit to create an in-core commit object, its |
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* parents list holds commit objects that represent its parents, but |
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* they are expected to be lazily initialized and do not know what |
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* their trees or parents are yet. When this function returns such a |
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* half-initialised objects, the caller is expected to initialize them |
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* by calling parse_object() on them. |
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*/ |
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struct object *lookup_object(const unsigned char *sha1); |
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extern void *create_object(const unsigned char *sha1, int type, void *obj); |
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/* |
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* Returns the object, having parsed it to find out what it is. |
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* |
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* Returns NULL if the object is missing or corrupt. |
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*/ |
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struct object *parse_object(const unsigned char *sha1); |
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/* |
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* Like parse_object, but will die() instead of returning NULL. If the |
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* "name" parameter is not NULL, it is included in the error message |
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* (otherwise, the sha1 hex is given). |
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*/ |
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struct object *parse_object_or_die(const unsigned char *sha1, const char *name); |
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/* Given the result of read_sha1_file(), returns the object after |
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* parsing it. eaten_p indicates if the object has a borrowed copy |
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* of buffer and the caller should not free() it. |
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*/ |
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struct object *parse_object_buffer(const unsigned char *sha1, enum object_type type, unsigned long size, void *buffer, int *eaten_p); |
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/** Returns the object, with potentially excess memory allocated. **/ |
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struct object *lookup_unknown_object(const unsigned char *sha1); |
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struct object_list *object_list_insert(struct object *item, |
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struct object_list **list_p); |
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int object_list_contains(struct object_list *list, struct object *obj); |
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/* Object array handling .. */ |
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void add_object_array(struct object *obj, const char *name, struct object_array *array); |
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void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode); |
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void object_array_remove_duplicates(struct object_array *); |
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void clear_object_flags(unsigned flags); |
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#endif /* OBJECT_H */
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