Andrew's git - gitweb.git/blob

   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_ref_in(const char *, each_ref_fn, void *);
  24extern int for_each_tag_ref(each_ref_fn, void *);
  25extern int for_each_branch_ref(each_ref_fn, void *);
  26extern int for_each_remote_ref(each_ref_fn, void *);
  27extern int for_each_replace_ref(each_ref_fn, void *);
  28extern int for_each_glob_ref(each_ref_fn, const char *pattern, void *);
  29extern int for_each_glob_ref_in(each_ref_fn, const char *pattern, const char* prefix, void *);
  30
  31extern int head_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data);
  32extern int for_each_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data);
  33extern int for_each_ref_in_submodule(const char *submodule, const char *prefix,
  34                each_ref_fn fn, void *cb_data);
  35extern int for_each_tag_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data);
  36extern int for_each_branch_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data);
  37extern int for_each_remote_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data);
  38
  39static inline const char *has_glob_specials(const char *pattern)
  40{
  41        return strpbrk(pattern, "?*[");
  42}
  43
  44/* can be used to learn about broken ref and symref */
  45extern int for_each_rawref(each_ref_fn, void *);
  46
  47extern void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname);
  48
  49/*
  50 * Extra refs will be listed by for_each_ref() before any actual refs
  51 * for the duration of this process or until clear_extra_refs() is
  52 * called. Only extra refs added before for_each_ref() is called will
  53 * be listed on a given call of for_each_ref().
  54 */
  55extern void add_extra_ref(const char *refname, const unsigned char *sha1, int flags);
  56extern void clear_extra_refs(void);
  57extern int ref_exists(char *);
  58
  59extern int peel_ref(const char *, unsigned char *);
  60
  61/** Locks a "refs/" ref returning the lock on success and NULL on failure. **/
  62extern struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
  63
  64/** Locks any ref (for 'HEAD' type refs). */
  65#define REF_NODEREF     0x01
  66extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int flags);
  67
  68/** Close the file descriptor owned by a lock and return the status */
  69extern int close_ref(struct ref_lock *lock);
  70
  71/** Close and commit the ref locked by the lock */
  72extern int commit_ref(struct ref_lock *lock);
  73
  74/** Release any lock taken but not written. **/
  75extern void unlock_ref(struct ref_lock *lock);
  76
  77/** Writes sha1 into the ref specified by the lock. **/
  78extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg);
  79
  80/** Setup reflog before using. **/
  81int log_ref_setup(const char *ref_name, char *logfile, int bufsize);
  82
  83/** Reads log for the value of ref during at_time. **/
  84extern 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);
  85
  86/* iterate over reflog entries */
  87typedef int each_reflog_ent_fn(unsigned char *osha1, unsigned char *nsha1, const char *, unsigned long, int, const char *, void *);
  88int for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data);
  89int for_each_recent_reflog_ent(const char *ref, each_reflog_ent_fn fn, long, void *cb_data);
  90
  91/*
  92 * Calls the specified function for each reflog file until it returns nonzero,
  93 * and returns the value
  94 */
  95extern int for_each_reflog(each_ref_fn, void *);
  96
  97#define CHECK_REF_FORMAT_OK 0
  98#define CHECK_REF_FORMAT_ERROR (-1)
  99#define CHECK_REF_FORMAT_ONELEVEL (-2)
 100#define CHECK_REF_FORMAT_WILDCARD (-3)
 101extern int check_ref_format(const char *target);
 102
 103extern const char *prettify_refname(const char *refname);
 104extern char *shorten_unambiguous_ref(const char *ref, int strict);
 105
 106/** rename ref, return 0 on success **/
 107extern int rename_ref(const char *oldref, const char *newref, const char *logmsg);
 108
 109/** resolve ref in nested "gitlink" repository */
 110extern int resolve_gitlink_ref(const char *name, const char *refname, unsigned char *result);
 111
 112/** lock a ref and then write its file */
 113enum action_on_err { MSG_ON_ERR, DIE_ON_ERR, QUIET_ON_ERR };
 114int update_ref(const char *action, const char *refname,
 115                const unsigned char *sha1, const unsigned char *oldval,
 116                int flags, enum action_on_err onerr);
 117
 118#endif /* REFS_H */