refs.h

   1 #ifndef REFS_H
   2 #define REFS_H
   3
   4 /*
   5  * Calls the specified function for each ref file until it returns nonzero,
   6  * and returns the value
   7  */
   8 extern int head_ref(int (*fn)(const char *path, const unsigned char *sha1));
   9 extern int for_each_ref(int (*fn)(const char *path, const unsigned char *sha1));
  10
  11 /** Reads the refs file specified into sha1 **/
  12 extern int get_ref_sha1(const char *ref, unsigned char *sha1);
  13
  14 /** Locks ref and returns the fd to give to write_ref_sha1() if the ref
  15  * has the given value currently; otherwise, returns -1.
  16  **/
  17 extern int lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
  18
  19 /** Writes sha1 into the refs file specified, locked with the given fd. **/
  20 extern int write_ref_sha1(const char *ref, int fd, const unsigned char *sha1);
  21
  22 /** Writes sha1 into the refs file specified. **/
  23 extern int write_ref_sha1_unlocked(const char *ref, const unsigned char *sha1);
  24
  25 /** Returns 0 if target has the right format for a ref. **/
  26 extern int check_ref_format(const char *target);
  27
  28 #endif /* REFS_H */