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