Andrew's git / gitweb.git / refs.h
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refs.hon commit git-fetch: use fetch--tool pick-rref to avoid local fetch from alternate (e3c6f24)
   1#ifndef REFS_H
   2#define REFS_H
   3
   4struct ref_lock {
   5        char *ref_name;
   6        char *orig_ref_name;
   7        struct lock_file *lk;
   8        unsigned char old_sha1[20];
   9        int lock_fd;
  10        int force_write;
  11};
  12
  13#define REF_ISSYMREF 01
  14#define REF_ISPACKED 02
  15
  16/*
  17 * Calls the specified function for each ref file until it returns nonzero,
  18 * and returns the value
  19 */
  20typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, void *cb_data);
  21extern int head_ref(each_ref_fn, void *);
  22extern int for_each_ref(each_ref_fn, void *);
  23extern int for_each_tag_ref(each_ref_fn, void *);
  24extern int for_each_branch_ref(each_ref_fn, void *);
  25extern int for_each_remote_ref(each_ref_fn, void *);
  26
  27extern int peel_ref(const char *, unsigned char *);
  28
  29/** Reads the refs file specified into sha1 **/
  30extern int get_ref_sha1(const char *ref, unsigned char *sha1);
  31
  32/** Locks a "refs/" ref returning the lock on success and NULL on failure. **/
  33extern struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
  34
  35/** Locks any ref (for 'HEAD' type refs). */
  36extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1);
  37
  38/** Release any lock taken but not written. **/
  39extern void unlock_ref(struct ref_lock *lock);
  40
  41/** Writes sha1 into the ref specified by the lock. **/
  42extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg);
  43
  44/** Reads log for the value of ref during at_time. **/
  45extern 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);
  46
  47/* iterate over reflog entries */
  48typedef int each_reflog_ent_fn(unsigned char *osha1, unsigned char *nsha1, const char *, unsigned long, int, const char *, void *);
  49int for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data);
  50
  51/*
  52 * Calls the specified function for each reflog file until it returns nonzero,
  53 * and returns the value
  54 */
  55extern int for_each_reflog(each_ref_fn, void *);
  56
  57/** Returns 0 if target has the right format for a ref. **/
  58extern int check_ref_format(const char *target);
  59
  60/** rename ref, return 0 on success **/
  61extern int rename_ref(const char *oldref, const char *newref, const char *logmsg);
  62
  63#endif /* REFS_H */