72518e9c26
When copying from an existing pack and when copying from a loose object with new style header, the code makes sure that the piece we are going to copy out inflates well and inflate() consumes the data in full while doing so. The check to see if the xdelta really apply is quite expensive as you described, because you would need to have the image of the base object which can be represented as a delta against something else. Signed-off-by: Junio C Hamano <junkio@cox.net>
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
#ifndef OBJECT_H
|
|
#define OBJECT_H
|
|
|
|
struct object_list {
|
|
struct object *item;
|
|
struct object_list *next;
|
|
};
|
|
|
|
struct object_refs {
|
|
unsigned count;
|
|
struct object *base;
|
|
struct object *ref[FLEX_ARRAY]; /* more */
|
|
};
|
|
|
|
struct object_array {
|
|
unsigned int nr;
|
|
unsigned int alloc;
|
|
struct object_array_entry {
|
|
struct object *item;
|
|
const char *name;
|
|
} *objects;
|
|
};
|
|
|
|
#define TYPE_BITS 3
|
|
#define FLAG_BITS 27
|
|
|
|
/*
|
|
* The object type is stored in 3 bits.
|
|
*/
|
|
struct object {
|
|
unsigned parsed : 1;
|
|
unsigned used : 1;
|
|
unsigned type : TYPE_BITS;
|
|
unsigned flags : FLAG_BITS;
|
|
unsigned char sha1[20];
|
|
};
|
|
|
|
extern int track_object_refs;
|
|
extern const char *type_names[9];
|
|
|
|
extern unsigned int get_max_object_index(void);
|
|
extern struct object *get_indexed_object(unsigned int);
|
|
|
|
static inline const char *typename(unsigned int type)
|
|
{
|
|
return type_names[type > OBJ_BAD ? OBJ_BAD : type];
|
|
}
|
|
|
|
extern struct object_refs *lookup_object_refs(struct object *);
|
|
|
|
/** Internal only **/
|
|
struct object *lookup_object(const unsigned char *sha1);
|
|
|
|
/** Returns the object, having looked it up as being the given type. **/
|
|
struct object *lookup_object_type(const unsigned char *sha1, const char *type);
|
|
|
|
void created_object(const unsigned char *sha1, struct object *obj);
|
|
|
|
/** Returns the object, having parsed it to find out what it is. **/
|
|
struct object *parse_object(const unsigned char *sha1);
|
|
|
|
/** Returns the object, with potentially excess memory allocated. **/
|
|
struct object *lookup_unknown_object(const unsigned char *sha1);
|
|
|
|
struct object_refs *alloc_object_refs(unsigned count);
|
|
void set_object_refs(struct object *obj, struct object_refs *refs);
|
|
|
|
void mark_reachable(struct object *obj, unsigned int mask);
|
|
|
|
struct object_list *object_list_insert(struct object *item,
|
|
struct object_list **list_p);
|
|
|
|
void object_list_append(struct object *item,
|
|
struct object_list **list_p);
|
|
|
|
unsigned object_list_length(struct object_list *list);
|
|
|
|
int object_list_contains(struct object_list *list, struct object *obj);
|
|
|
|
/* Object array handling .. */
|
|
void add_object_array(struct object *obj, const char *name, struct object_array *array);
|
|
|
|
#endif /* OBJECT_H */
|