diff options
Diffstat (limited to 'refs.h')
| -rw-r--r-- | refs.h | 63 |
1 files changed, 63 insertions, 0 deletions
@@ -0,0 +1,63 @@ +#ifndef REFS_H +#define REFS_H + +struct ref_lock { + char *ref_name; + char *orig_ref_name; + 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, char **msg, unsigned long *cutoff_time, int *cutoff_tz, int *cutoff_cnt); + +/* iterate over reflog entries */ +typedef int each_reflog_ent_fn(unsigned char *osha1, unsigned char *nsha1, const char *, unsigned long, int, const char *, void *); +int for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data); + +/* + * Calls the specified function for each reflog file until it returns nonzero, + * and returns the value + */ +extern int for_each_reflog(each_ref_fn, void *); + +/** 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, const char *logmsg); + +#endif /* REFS_H */ |