diff options
Diffstat (limited to 'refs.h')
| -rw-r--r-- | refs.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/refs.h b/refs.h new file mode 100644 index 0000000000..553155c04a --- /dev/null +++ b/refs.h @@ -0,0 +1,44 @@ +#ifndef REFS_H +#define REFS_H + +struct ref_lock { + char *ref_file; + char *log_file; + struct lock_file *lk; + unsigned char old_sha1[20]; + int lock_fd; + int force_write; +}; + +/* + * Calls the specified function for each ref file until it returns nonzero, + * and returns the value + */ +extern int head_ref(int (*fn)(const char *path, const unsigned char *sha1)); +extern int for_each_ref(int (*fn)(const char *path, const unsigned char *sha1)); +extern int for_each_tag_ref(int (*fn)(const char *path, const unsigned char *sha1)); +extern int for_each_branch_ref(int (*fn)(const char *path, const unsigned char *sha1)); +extern int for_each_remote_ref(int (*fn)(const char *path, const unsigned char *sha1)); + +/** 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, int mustexist); + +/** Locks any ref (for 'HEAD' type refs). */ +extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int mustexist); + +/** 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, unsigned char *sha1); + +/** Returns 0 if target has the right format for a ref. **/ +extern int check_ref_format(const char *target); + +#endif /* REFS_H */ |