summaryrefslogtreecommitdiff
path: root/refs.h
blob: ce73d5c7ae394c012f828536dd4df8b143819718 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
#ifndef REFS_H
#define REFS_H
 
struct ref_lock {
	char *ref_name;
	char *log_file;
	struct lock_file *lk;
	unsigned char old_sha1[20];
	int lock_fd;
	int force_write;
};
 
#define REF_ISSYMREF 01
#define REF_ISPACKED 02
 
/*
 * Calls the specified function for each ref file until it returns nonzero,
 * and returns the value
 */
typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, void *cb_data);
extern int head_ref(each_ref_fn, void *);
extern int for_each_ref(each_ref_fn, void *);
extern int for_each_tag_ref(each_ref_fn, void *);
extern int for_each_branch_ref(each_ref_fn, void *);
extern int for_each_remote_ref(each_ref_fn, void *);
 
extern int peel_ref(const char *, unsigned char *);
 
/** Reads the refs file specified into sha1 **/
extern int get_ref_sha1(const char *ref, unsigned char *sha1);
 
/** Locks a "refs/" ref returning the lock on success and NULL on failure. **/
extern struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
 
/** Locks any ref (for 'HEAD' type refs). */
extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1);
 
/** Release any lock taken but not written. **/
extern void unlock_ref(struct ref_lock *lock);
 
/** Writes sha1 into the ref specified by the lock. **/
extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg);
 
/** Reads log for the value of ref during at_time. **/
extern int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1);
 
/** Returns 0 if target has the right format for a ref. **/
extern int check_ref_format(const char *target);
 
/** rename ref, return 0 on success **/
extern int rename_ref(const char *oldref, const char *newref);
 
#endif /* REFS_H */