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git/refs.h
Linus Torvalds 723c31fea2 Add "git_path()" and "head_ref()" helper functions.
"git_path()" returns a static pathname pointer into the git directory
using a printf-like format specifier.

"head_ref()" works like "for_each_ref()", except for just the HEAD.
2005-07-05 11:31:32 -07:00

28 lines
1 KiB
C

#ifndef REFS_H
#define REFS_H
/*
* 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));
/** Reads the refs file specified into sha1 **/
extern int get_ref_sha1(const char *ref, unsigned char *sha1);
/** Locks ref and returns the fd to give to write_ref_sha1() if the ref
* has the given value currently; otherwise, returns -1.
**/
extern int lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
/** Writes sha1 into the refs file specified, locked with the given fd. **/
extern int write_ref_sha1(const char *ref, int fd, const unsigned char *sha1);
/** Writes sha1 into the refs file specified. **/
extern int write_ref_sha1_unlocked(const char *ref, const 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 */