git/refs.h
Lars Hjemli c976d415e5 git-branch: add options and tests for branch renaming
Extend git-branch with the following options:

  git-branch -m|-M [<oldbranch>] newbranch

The -M variation is required to force renaming over an exsisting
branchname.

This also indroduces $GIT_DIR/RENAME_REF which is a "metabranch"
used when renaming branches. It will always hold the original sha1
for the latest renamed branch.

Additionally, if $GIT_DIR/logs/RENAME_REF exists, all branch rename
events are logged there.

Finally, some testcases are added to verify the new options.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-05 23:50:57 -08:00

54 lines
1.7 KiB
C

#ifndef REFS_H
#define REFS_H
struct ref_lock {
char *ref_name;
char *log_file;
struct lock_file *lk;
unsigned char old_sha1[20];
int lock_fd;
int force_write;
};
#define REF_ISSYMREF 01
#define REF_ISPACKED 02
/*
* Calls the specified function for each ref file until it returns nonzero,
* and returns the value
*/
typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, void *cb_data);
extern int head_ref(each_ref_fn, void *);
extern int for_each_ref(each_ref_fn, void *);
extern int for_each_tag_ref(each_ref_fn, void *);
extern int for_each_branch_ref(each_ref_fn, void *);
extern int for_each_remote_ref(each_ref_fn, void *);
extern int peel_ref(const char *, unsigned char *);
/** 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);
/** Locks any ref (for 'HEAD' type refs). */
extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1);
/** 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, int cnt, unsigned char *sha1);
/** Returns 0 if target has the right format for a ref. **/
extern int check_ref_format(const char *target);
/** rename ref, return 0 on success **/
extern int rename_ref(const char *oldref, const char *newref);
#endif /* REFS_H */