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95fc7512 DB |
1 | #ifndef REFS_H |
2 | #define REFS_H | |
3 | ||
b9342b3f | 4 | #include "commit.h" |
ec06b055 | 5 | |
504c4d42 | 6 | struct object_id; |
077be78d | 7 | struct ref_store; |
ef3ca954 | 8 | struct repository; |
504c4d42 NTND |
9 | struct strbuf; |
10 | struct string_list; | |
ef3ca954 | 11 | struct string_list_item; |
17eff96b | 12 | struct worktree; |
504c4d42 | 13 | |
fb58c8d5 MH |
14 | /* |
15 | * Resolve a reference, recursively following symbolic refererences. | |
16 | * | |
54fad661 RS |
17 | * Return the name of the non-symbolic reference that ultimately pointed |
18 | * at the resolved object name. The return value, if not NULL, is a | |
19 | * pointer into either a static buffer or the input ref. | |
20 | * | |
49e61479 | 21 | * If oid is non-NULL, store the referred-to object's name in it. |
fb58c8d5 MH |
22 | * |
23 | * If the reference cannot be resolved to an object, the behavior | |
24 | * depends on the RESOLVE_REF_READING flag: | |
25 | * | |
26 | * - If RESOLVE_REF_READING is set, return NULL. | |
27 | * | |
49e61479 | 28 | * - If RESOLVE_REF_READING is not set, clear oid and return the name of |
fb58c8d5 MH |
29 | * the last reference name in the chain, which will either be a non-symbolic |
30 | * reference or an undefined reference. If this is a prelude to | |
31 | * "writing" to the ref, the return value is the name of the ref | |
32 | * that will actually be created or changed. | |
33 | * | |
34 | * If the RESOLVE_REF_NO_RECURSE flag is passed, only resolves one | |
49e61479 | 35 | * level of symbolic reference. The value stored in oid for a symbolic |
36 | * reference will always be null_oid in this case, and the return | |
fb58c8d5 MH |
37 | * value is the reference that the symref refers to directly. |
38 | * | |
39 | * If flags is non-NULL, set the value that it points to the | |
40 | * combination of REF_ISPACKED (if the reference was found among the | |
41 | * packed references), REF_ISSYMREF (if the initial reference was a | |
42 | * symbolic reference), REF_BAD_NAME (if the reference name is ill | |
43 | * formed --- see RESOLVE_REF_ALLOW_BAD_NAME below), and REF_ISBROKEN | |
44 | * (if the ref is malformed or has a bad name). See refs.h for more detail | |
45 | * on each flag. | |
46 | * | |
47 | * If ref is not a properly-formatted, normalized reference, return | |
48 | * NULL. If more than MAXDEPTH recursive symbolic lookups are needed, | |
49 | * give up and return NULL. | |
50 | * | |
51 | * RESOLVE_REF_ALLOW_BAD_NAME allows resolving refs even when their | |
52 | * name is invalid according to git-check-ref-format(1). If the name | |
49e61479 | 53 | * is bad then the value stored in oid will be null_oid and the two |
fb58c8d5 MH |
54 | * flags REF_ISBROKEN and REF_BAD_NAME will be set. |
55 | * | |
56 | * Even with RESOLVE_REF_ALLOW_BAD_NAME, names that escape the refs/ | |
57 | * directory and do not consist of all caps and underscores cannot be | |
58 | * resolved. The function returns NULL for such ref names. | |
59 | * Caps and underscores refers to the special refs, such as HEAD, | |
60 | * FETCH_HEAD and friends, that all live outside of the refs/ directory. | |
61 | */ | |
62 | #define RESOLVE_REF_READING 0x01 | |
63 | #define RESOLVE_REF_NO_RECURSE 0x02 | |
64 | #define RESOLVE_REF_ALLOW_BAD_NAME 0x04 | |
65 | ||
7d2df051 NTND |
66 | const char *refs_resolve_ref_unsafe(struct ref_store *refs, |
67 | const char *refname, | |
68 | int resolve_flags, | |
49e61479 | 69 | struct object_id *oid, |
ce14de03 | 70 | int *flags); |
25a33b33 | 71 | |
1354c9b2 | 72 | const char *resolve_ref_unsafe(const char *refname, int resolve_flags, |
49e61479 | 73 | struct object_id *oid, int *flags); |
fb58c8d5 | 74 | |
7d2df051 NTND |
75 | char *refs_resolve_refdup(struct ref_store *refs, |
76 | const char *refname, int resolve_flags, | |
0f2dc722 | 77 | struct object_id *oid, int *flags); |
1354c9b2 | 78 | char *resolve_refdup(const char *refname, int resolve_flags, |
0f2dc722 | 79 | struct object_id *oid, int *flags); |
fb58c8d5 | 80 | |
1354c9b2 | 81 | int read_ref_full(const char *refname, int resolve_flags, |
34c290a6 | 82 | struct object_id *oid, int *flags); |
83 | int read_ref(const char *refname, struct object_id *oid); | |
fb58c8d5 | 84 | |
cd475b3b PS |
85 | int refs_read_symbolic_ref(struct ref_store *ref_store, const char *refname, |
86 | struct strbuf *referent); | |
87 | ||
7d2df051 NTND |
88 | /* |
89 | * Return 0 if a reference named refname could be created without | |
90 | * conflicting with the name of an existing reference. Otherwise, | |
91 | * return a negative value and write an explanation to err. If extras | |
92 | * is non-NULL, it is a list of additional refnames with which refname | |
93 | * is not allowed to conflict. If skip is non-NULL, ignore potential | |
94 | * conflicts with refs in skip (e.g., because they are scheduled for | |
95 | * deletion in the same operation). Behavior is undefined if the same | |
96 | * name is listed in both extras and skip. | |
97 | * | |
98 | * Two reference names conflict if one of them exactly matches the | |
99 | * leading components of the other; e.g., "foo/bar" conflicts with | |
100 | * both "foo" and with "foo/bar/baz" but not with "foo/bar" or | |
101 | * "foo/barbados". | |
102 | * | |
103 | * extras and skip must be sorted. | |
104 | */ | |
105 | ||
106 | int refs_verify_refname_available(struct ref_store *refs, | |
107 | const char *refname, | |
b05855b5 | 108 | const struct string_list *extras, |
7d2df051 NTND |
109 | const struct string_list *skip, |
110 | struct strbuf *err); | |
111 | ||
3f9f1acc HWN |
112 | int refs_ref_exists(struct ref_store *refs, const char *refname); |
113 | ||
1354c9b2 | 114 | int ref_exists(const char *refname); |
fb58c8d5 | 115 | |
341fb286 CW |
116 | int should_autocreate_reflog(const char *refname); |
117 | ||
1354c9b2 | 118 | int is_branch(const char *refname); |
fb58c8d5 | 119 | |
55454427 | 120 | int refs_init_db(struct strbuf *err); |
6fb5acfd | 121 | |
fb58c8d5 | 122 | /* |
36a31792 JK |
123 | * Return the peeled value of the oid currently being iterated via |
124 | * for_each_ref(), etc. This is equivalent to calling: | |
125 | * | |
126 | * peel_object(oid, &peeled); | |
127 | * | |
128 | * with the "oid" value given to the each_ref_fn callback, except | |
129 | * that some ref storage may be able to answer the query without | |
130 | * actually loading the object in memory. | |
fb58c8d5 | 131 | */ |
36a31792 | 132 | int peel_iterated_oid(const struct object_id *base, struct object_id *peeled); |
fb58c8d5 MH |
133 | |
134 | /** | |
a8355bb7 MH |
135 | * Resolve refname in the nested "gitlink" repository in the specified |
136 | * submodule (which must be non-NULL). If the resolution is | |
78fb4579 | 137 | * successful, return 0 and set oid to the name of the object; |
a8355bb7 | 138 | * otherwise, return a non-zero value. |
fb58c8d5 | 139 | */ |
a8355bb7 | 140 | int resolve_gitlink_ref(const char *submodule, const char *refname, |
a98e6101 | 141 | struct object_id *oid); |
fb58c8d5 MH |
142 | |
143 | /* | |
144 | * Return true iff abbrev_name is a possible abbreviation for | |
145 | * full_name according to the rules defined by ref_rev_parse_rules in | |
146 | * refs.c. | |
147 | */ | |
1354c9b2 | 148 | int refname_match(const char *abbrev_name, const char *full_name); |
fb58c8d5 | 149 | |
b4be7410 BW |
150 | /* |
151 | * Given a 'prefix' expand it by the rules in 'ref_rev_parse_rules' and add | |
152 | * the results to 'prefixes' | |
153 | */ | |
873cd28a JK |
154 | struct strvec; |
155 | void expand_ref_prefix(struct strvec *prefixes, const char *prefix); | |
b4be7410 | 156 | |
0b1dbf53 | 157 | int expand_ref(struct repository *r, const char *str, int len, struct object_id *oid, char **ref); |
f24c30e0 JT |
158 | int repo_dwim_ref(struct repository *r, const char *str, int len, |
159 | struct object_id *oid, char **ref, int nonfatal_dangling_mark); | |
56700903 | 160 | int repo_dwim_log(struct repository *r, const char *str, int len, struct object_id *oid, char **ref); |
334dc52f | 161 | int dwim_log(const char *str, int len, struct object_id *oid, char **ref); |
fb58c8d5 | 162 | |
8747ebb7 DGW |
163 | /* |
164 | * Retrieves the default branch name for newly-initialized repositories. | |
165 | * | |
166 | * The return value of `repo_default_branch_name()` is an allocated string. The | |
167 | * return value of `git_default_branch_name()` is a singleton. | |
168 | */ | |
cc0f13c5 JS |
169 | const char *git_default_branch_name(int quiet); |
170 | char *repo_default_branch_name(struct repository *r, int quiet); | |
8747ebb7 | 171 | |
b416af5b | 172 | /* |
30173b88 MH |
173 | * A ref_transaction represents a collection of reference updates that |
174 | * should succeed or fail together. | |
b416af5b RS |
175 | * |
176 | * Calling sequence | |
177 | * ---------------- | |
30173b88 | 178 | * |
b416af5b RS |
179 | * - Allocate and initialize a `struct ref_transaction` by calling |
180 | * `ref_transaction_begin()`. | |
181 | * | |
30173b88 MH |
182 | * - Specify the intended ref updates by calling one or more of the |
183 | * following functions: | |
184 | * - `ref_transaction_update()` | |
185 | * - `ref_transaction_create()` | |
186 | * - `ref_transaction_delete()` | |
187 | * - `ref_transaction_verify()` | |
188 | * | |
189 | * - Then either: | |
190 | * | |
191 | * - Optionally call `ref_transaction_prepare()` to prepare the | |
192 | * transaction. This locks all references, checks preconditions, | |
193 | * etc. but doesn't finalize anything. If this step fails, the | |
194 | * transaction has been closed and can only be freed. If this step | |
195 | * succeeds, then `ref_transaction_commit()` is almost certain to | |
196 | * succeed. However, you can still call `ref_transaction_abort()` | |
197 | * if you decide not to commit the transaction after all. | |
198 | * | |
199 | * - Call `ref_transaction_commit()` to execute the transaction, | |
200 | * make the changes permanent, and release all locks. If you | |
201 | * haven't already called `ref_transaction_prepare()`, then | |
202 | * `ref_transaction_commit()` calls it for you. | |
203 | * | |
204 | * Or | |
205 | * | |
206 | * - Call `initial_ref_transaction_commit()` if the ref database is | |
207 | * known to be empty and have no other writers (e.g. during | |
208 | * clone). This is likely to be much faster than | |
209 | * `ref_transaction_commit()`. `ref_transaction_prepare()` should | |
210 | * *not* be called before `initial_ref_transaction_commit()`. | |
211 | * | |
212 | * - Then finally, call `ref_transaction_free()` to free the | |
213 | * `ref_transaction` data structure. | |
214 | * | |
215 | * At any time before calling `ref_transaction_commit()`, you can call | |
216 | * `ref_transaction_abort()` to abort the transaction, rollback any | |
217 | * locks, and free any associated resources (including the | |
218 | * `ref_transaction` data structure). | |
219 | * | |
220 | * Putting it all together, a complete reference update looks like | |
221 | * | |
222 | * struct ref_transaction *transaction; | |
223 | * struct strbuf err = STRBUF_INIT; | |
224 | * int ret = 0; | |
225 | * | |
c6da34a6 | 226 | * transaction = ref_store_transaction_begin(refs, &err); |
30173b88 MH |
227 | * if (!transaction || |
228 | * ref_transaction_update(...) || | |
229 | * ref_transaction_create(...) || | |
230 | * ...etc... || | |
231 | * ref_transaction_commit(transaction, &err)) { | |
232 | * error("%s", err.buf); | |
233 | * ret = -1; | |
234 | * } | |
235 | * ref_transaction_free(transaction); | |
236 | * strbuf_release(&err); | |
237 | * return ret; | |
b416af5b RS |
238 | * |
239 | * Error handling | |
240 | * -------------- | |
241 | * | |
242 | * On error, transaction functions append a message about what | |
243 | * went wrong to the 'err' argument. The message mentions what | |
244 | * ref was being updated (if any) when the error occurred so it | |
245 | * can be passed to 'die' or 'error' as-is. | |
246 | * | |
247 | * The message is appended to err without first clearing err. | |
248 | * err will not be '\n' terminated. | |
49386868 DT |
249 | * |
250 | * Caveats | |
251 | * ------- | |
252 | * | |
253 | * Note that no locks are taken, and no refs are read, until | |
30173b88 MH |
254 | * `ref_transaction_prepare()` or `ref_transaction_commit()` is |
255 | * called. So, for example, `ref_transaction_verify()` won't report a | |
256 | * verification failure until the commit is attempted. | |
b416af5b | 257 | */ |
caa4046c MH |
258 | struct ref_transaction; |
259 | ||
89df9c84 | 260 | /* |
3bc581b9 MH |
261 | * Bit values set in the flags argument passed to each_ref_fn() and |
262 | * stored in ref_iterator::flags. Other bits are for internal use | |
263 | * only: | |
89df9c84 MH |
264 | */ |
265 | ||
266 | /* Reference is a symbolic reference. */ | |
98ac34b2 | 267 | #define REF_ISSYMREF 0x01 |
89df9c84 MH |
268 | |
269 | /* Reference is a packed reference. */ | |
98ac34b2 | 270 | #define REF_ISPACKED 0x02 |
89df9c84 MH |
271 | |
272 | /* | |
273 | * Reference cannot be resolved to an object name: dangling symbolic | |
d0f810f0 RS |
274 | * reference (directly or indirectly), corrupt reference file, |
275 | * reference exists but name is bad, or symbolic reference refers to | |
276 | * ill-formatted reference name. | |
89df9c84 | 277 | */ |
98ac34b2 | 278 | #define REF_ISBROKEN 0x04 |
f4204ab9 | 279 | |
d0f810f0 RS |
280 | /* |
281 | * Reference name is not well formed. | |
282 | * | |
283 | * See git-check-ref-format(1) for the definition of well formed ref names. | |
284 | */ | |
285 | #define REF_BAD_NAME 0x08 | |
286 | ||
8a65ff76 | 287 | /* |
4f78c24c | 288 | * The signature for the callback function for the for_each_*() |
78fb4579 | 289 | * functions below. The memory pointed to by the refname and oid |
4f78c24c MH |
290 | * arguments is only guaranteed to be valid for the duration of a |
291 | * single callback invocation. | |
292 | */ | |
293 | typedef int each_ref_fn(const char *refname, | |
2b2a5be3 MH |
294 | const struct object_id *oid, int flags, void *cb_data); |
295 | ||
4a6067cd SB |
296 | /* |
297 | * The same as each_ref_fn, but also with a repository argument that | |
298 | * contains the repository associated with the callback. | |
299 | */ | |
300 | typedef int each_repo_ref_fn(struct repository *r, | |
301 | const char *refname, | |
302 | const struct object_id *oid, | |
303 | int flags, | |
304 | void *cb_data); | |
305 | ||
4f78c24c MH |
306 | /* |
307 | * The following functions invoke the specified callback function for | |
308 | * each reference indicated. If the function ever returns a nonzero | |
309 | * value, stop the iteration and return that value. Please note that | |
310 | * it is not safe to modify references while an iteration is in | |
311 | * progress, unless the same callback function invocation that | |
312 | * modifies the reference also returns a nonzero value to immediately | |
adac8115 | 313 | * stop the iteration. Returned references are sorted. |
8a65ff76 | 314 | */ |
62f0b399 NTND |
315 | int refs_head_ref(struct ref_store *refs, |
316 | each_ref_fn fn, void *cb_data); | |
7d2df051 NTND |
317 | int refs_for_each_ref(struct ref_store *refs, |
318 | each_ref_fn fn, void *cb_data); | |
319 | int refs_for_each_ref_in(struct ref_store *refs, const char *prefix, | |
320 | each_ref_fn fn, void *cb_data); | |
321 | int refs_for_each_tag_ref(struct ref_store *refs, | |
322 | each_ref_fn fn, void *cb_data); | |
323 | int refs_for_each_branch_ref(struct ref_store *refs, | |
324 | each_ref_fn fn, void *cb_data); | |
325 | int refs_for_each_remote_ref(struct ref_store *refs, | |
326 | each_ref_fn fn, void *cb_data); | |
327 | ||
126c1cce | 328 | /* just iterates the head ref. */ |
1354c9b2 | 329 | int head_ref(each_ref_fn fn, void *cb_data); |
126c1cce HW |
330 | |
331 | /* iterates all refs. */ | |
1354c9b2 | 332 | int for_each_ref(each_ref_fn fn, void *cb_data); |
126c1cce HW |
333 | |
334 | /** | |
335 | * iterates all refs which have a defined prefix and strips that prefix from | |
336 | * the passed variable refname. | |
337 | */ | |
1354c9b2 | 338 | int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data); |
126c1cce | 339 | |
073cf63c | 340 | int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix, |
67985e4e JK |
341 | each_ref_fn fn, void *cb_data); |
342 | int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data); | |
126c1cce | 343 | |
16b1985b TB |
344 | /** |
345 | * iterate all refs in "patterns" by partitioning patterns into disjoint sets | |
346 | * and iterating the longest-common prefix of each set. | |
347 | * | |
348 | * callers should be prepared to ignore references that they did not ask for. | |
349 | */ | |
91e2ab15 JK |
350 | int refs_for_each_fullref_in_prefixes(struct ref_store *refs, |
351 | const char *namespace, const char **patterns, | |
352 | each_ref_fn fn, void *cb_data); | |
353 | ||
126c1cce HW |
354 | /** |
355 | * iterate refs from the respective area. | |
356 | */ | |
1354c9b2 MH |
357 | int for_each_tag_ref(each_ref_fn fn, void *cb_data); |
358 | int for_each_branch_ref(each_ref_fn fn, void *cb_data); | |
359 | int for_each_remote_ref(each_ref_fn fn, void *cb_data); | |
212e0f7e | 360 | int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data); |
126c1cce HW |
361 | |
362 | /* iterates all refs that match the specified glob pattern. */ | |
1354c9b2 | 363 | int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data); |
126c1cce | 364 | |
1354c9b2 MH |
365 | int for_each_glob_ref_in(each_ref_fn fn, const char *pattern, |
366 | const char *prefix, void *cb_data); | |
367 | ||
1354c9b2 MH |
368 | int head_ref_namespaced(each_ref_fn fn, void *cb_data); |
369 | int for_each_namespaced_ref(each_ref_fn fn, void *cb_data); | |
a1bea2c1 | 370 | |
fb58c8d5 | 371 | /* can be used to learn about broken ref and symref */ |
7d2df051 | 372 | int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data); |
1354c9b2 | 373 | int for_each_rawref(each_ref_fn fn, void *cb_data); |
fb58c8d5 | 374 | |
65516f58 RA |
375 | /* |
376 | * Normalizes partial refs to their fully qualified form. | |
377 | * Will prepend <prefix> to the <pattern> if it doesn't start with 'refs/'. | |
378 | * <prefix> will default to 'refs/' if NULL. | |
379 | * | |
380 | * item.string will be set to the result. | |
381 | * item.util will be set to NULL if <pattern> contains glob characters, or | |
382 | * non-NULL if it doesn't. | |
383 | */ | |
384 | void normalize_glob_ref(struct string_list_item *item, const char *prefix, | |
385 | const char *pattern); | |
386 | ||
894a9d33 TR |
387 | static inline const char *has_glob_specials(const char *pattern) |
388 | { | |
389 | return strpbrk(pattern, "?*["); | |
390 | } | |
391 | ||
1354c9b2 MH |
392 | void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname); |
393 | void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, | |
394 | const struct string_list *refnames); | |
f8948e2f | 395 | |
32d462ce MH |
396 | /* |
397 | * Flags for controlling behaviour of pack_refs() | |
398 | * PACK_REFS_PRUNE: Prune loose refs after packing | |
399 | * PACK_REFS_ALL: Pack _all_ refs, not just tags and already packed refs | |
400 | */ | |
401 | #define PACK_REFS_PRUNE 0x0001 | |
402 | #define PACK_REFS_ALL 0x0002 | |
403 | ||
404 | /* | |
405 | * Write a packed-refs file for the current repository. | |
406 | * flags: Combination of the above PACK_REFS_* flags. | |
407 | */ | |
7d2df051 | 408 | int refs_pack_refs(struct ref_store *refs, unsigned int flags); |
32d462ce | 409 | |
bd3b02da | 410 | /* |
a4c653df | 411 | * Setup reflog before using. Fill in err and return -1 on failure. |
bd3b02da | 412 | */ |
7d2df051 | 413 | int refs_create_reflog(struct ref_store *refs, const char *refname, |
7b089120 HWN |
414 | struct strbuf *err); |
415 | int safe_create_reflog(const char *refname, struct strbuf *err); | |
859c3017 | 416 | |
d556fae2 | 417 | /** Reads log for the value of ref during at_time. **/ |
7fdff474 NTND |
418 | int read_ref_at(struct ref_store *refs, |
419 | const char *refname, unsigned int flags, | |
dddbad72 | 420 | timestamp_t at_time, int cnt, |
8eb36d94 | 421 | struct object_id *oid, char **msg, |
dddbad72 | 422 | timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt); |
d556fae2 | 423 | |
4da58835 | 424 | /** Check if a particular reflog exists */ |
7d2df051 | 425 | int refs_reflog_exists(struct ref_store *refs, const char *refname); |
1354c9b2 | 426 | int reflog_exists(const char *refname); |
4da58835 | 427 | |
fc1c2168 | 428 | /* |
2616a5e5 | 429 | * Delete the specified reference. If old_oid is non-NULL, then |
78fb4579 | 430 | * verify that the current value of the reference is old_oid before |
2616a5e5 | 431 | * deleting it. If old_oid is NULL, delete the reference if it |
432 | * exists, regardless of its old value. It is an error for old_oid to | |
433 | * be null_oid. msg and flags are passed through to | |
64da4199 | 434 | * ref_transaction_delete(). |
fc1c2168 | 435 | */ |
c0fe4e8b NTND |
436 | int refs_delete_ref(struct ref_store *refs, const char *msg, |
437 | const char *refname, | |
2616a5e5 | 438 | const struct object_id *old_oid, |
c0fe4e8b | 439 | unsigned int flags); |
755b49ae | 440 | int delete_ref(const char *msg, const char *refname, |
2616a5e5 | 441 | const struct object_id *old_oid, unsigned int flags); |
fc1c2168 | 442 | |
98ffd5ff MH |
443 | /* |
444 | * Delete the specified references. If there are any problems, emit | |
445 | * errors but attempt to keep going (i.e., the deletes are not done in | |
64da4199 | 446 | * an all-or-nothing transaction). msg and flags are passed through to |
c5f04ddd | 447 | * ref_transaction_delete(). |
98ffd5ff | 448 | */ |
64da4199 MH |
449 | int refs_delete_refs(struct ref_store *refs, const char *msg, |
450 | struct string_list *refnames, unsigned int flags); | |
451 | int delete_refs(const char *msg, struct string_list *refnames, | |
452 | unsigned int flags); | |
98ffd5ff | 453 | |
4da58835 | 454 | /** Delete a reflog */ |
7d2df051 | 455 | int refs_delete_reflog(struct ref_store *refs, const char *refname); |
1354c9b2 | 456 | int delete_reflog(const char *refname); |
4da58835 | 457 | |
d1eb22da HWN |
458 | /* |
459 | * Callback to process a reflog entry found by the iteration functions (see | |
e6e94f34 JH |
460 | * below). |
461 | * | |
462 | * The committer parameter is a single string, in the form | |
463 | * "$GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL>" (without double quotes). | |
464 | * | |
465 | * The timestamp parameter gives the time when entry was created as the number | |
466 | * of seconds since the UNIX epoch. | |
467 | * | |
468 | * The tz parameter gives the timezone offset for the user who created | |
469 | * the reflog entry, and its value gives a positive or negative offset | |
470 | * from UTC. Its absolute value is formed by multiplying the hour | |
471 | * part by 100 and adding the minute part. For example, 1 hour ahead | |
472 | * of UTC, CET == "+0100", is represented as positive one hundred (not | |
473 | * postiive sixty). | |
474 | * | |
475 | * The msg parameter is a single complete line; a reflog message given | |
476 | * to refs_delete_ref, refs_update_ref, etc. is returned to the | |
477 | * callback normalized---each run of whitespaces are squashed into a | |
478 | * single whitespace, trailing whitespace, if exists, is trimmed, and | |
479 | * then a single LF is added at the end. | |
480 | * | |
481 | * The cb_data is a caller-supplied pointer given to the iterator | |
482 | * functions. | |
d1eb22da | 483 | */ |
1354c9b2 | 484 | typedef int each_reflog_ent_fn( |
9461d272 | 485 | struct object_id *old_oid, struct object_id *new_oid, |
dddbad72 | 486 | const char *committer, timestamp_t timestamp, |
1354c9b2 MH |
487 | int tz, const char *msg, void *cb_data); |
488 | ||
d1eb22da HWN |
489 | /* Iterate over reflog entries in the log for `refname`. */ |
490 | ||
491 | /* oldest entry first */ | |
7d2df051 NTND |
492 | int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname, |
493 | each_reflog_ent_fn fn, void *cb_data); | |
d1eb22da HWN |
494 | |
495 | /* youngest entry first */ | |
7d2df051 NTND |
496 | int refs_for_each_reflog_ent_reverse(struct ref_store *refs, |
497 | const char *refname, | |
498 | each_reflog_ent_fn fn, | |
499 | void *cb_data); | |
d1eb22da HWN |
500 | |
501 | /* | |
502 | * Iterate over reflog entries in the log for `refname` in the main ref store. | |
503 | */ | |
504 | ||
505 | /* oldest entry first */ | |
dfefa935 | 506 | int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, void *cb_data); |
d1eb22da HWN |
507 | |
508 | /* youngest entry first */ | |
98f85ff4 | 509 | int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, void *cb_data); |
2ff81662 | 510 | |
eb8381c8 NP |
511 | /* |
512 | * Calls the specified function for each reflog file until it returns nonzero, | |
adac8115 | 513 | * and returns the value. Reflog file order is unspecified. |
eb8381c8 | 514 | */ |
7d2df051 | 515 | int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data); |
1354c9b2 | 516 | int for_each_reflog(each_ref_fn fn, void *cb_data); |
eb8381c8 | 517 | |
8d9c5010 MH |
518 | #define REFNAME_ALLOW_ONELEVEL 1 |
519 | #define REFNAME_REFSPEC_PATTERN 2 | |
520 | ||
521 | /* | |
dfefa935 MH |
522 | * Return 0 iff refname has the correct format for a refname according |
523 | * to the rules described in Documentation/git-check-ref-format.txt. | |
524 | * If REFNAME_ALLOW_ONELEVEL is set in flags, then accept one-level | |
8d9c5010 | 525 | * reference names. If REFNAME_REFSPEC_PATTERN is set in flags, then |
cd377f45 JK |
526 | * allow a single "*" wildcard character in the refspec. No leading or |
527 | * repeated slashes are accepted. | |
8d9c5010 | 528 | */ |
1354c9b2 | 529 | int check_refname_format(const char *refname, int flags); |
95fc7512 | 530 | |
1de16aec NTND |
531 | /* |
532 | * Apply the rules from check_refname_format, but mutate the result until it | |
533 | * is acceptable, and place the result in "out". | |
534 | */ | |
535 | void sanitize_refname_component(const char *refname, struct strbuf *out); | |
536 | ||
1354c9b2 | 537 | const char *prettify_refname(const char *refname); |
fb58c8d5 | 538 | |
546edf37 NTND |
539 | char *refs_shorten_unambiguous_ref(struct ref_store *refs, |
540 | const char *refname, int strict); | |
1354c9b2 | 541 | char *shorten_unambiguous_ref(const char *refname, int strict); |
a9c37a72 | 542 | |
c976d415 | 543 | /** rename ref, return 0 on success **/ |
7d2df051 NTND |
544 | int refs_rename_ref(struct ref_store *refs, const char *oldref, |
545 | const char *newref, const char *logmsg); | |
52d59cc6 SD |
546 | int rename_ref(const char *oldref, const char *newref, |
547 | const char *logmsg); | |
548 | ||
549 | /** copy ref, return 0 on success **/ | |
550 | int refs_copy_existing_ref(struct ref_store *refs, const char *oldref, | |
551 | const char *newref, const char *logmsg); | |
552 | int copy_existing_ref(const char *oldref, const char *newref, | |
553 | const char *logmsg); | |
c976d415 | 554 | |
7d2df051 NTND |
555 | int refs_create_symref(struct ref_store *refs, const char *refname, |
556 | const char *target, const char *logmsg); | |
1354c9b2 | 557 | int create_symref(const char *refname, const char *target, const char *logmsg); |
0ebde32c | 558 | |
f4124112 MH |
559 | enum action_on_err { |
560 | UPDATE_REFS_MSG_ON_ERR, | |
561 | UPDATE_REFS_DIE_ON_ERR, | |
562 | UPDATE_REFS_QUIET_ON_ERR | |
563 | }; | |
564 | ||
caa4046c MH |
565 | /* |
566 | * Begin a reference transaction. The reference transaction must | |
33f9fc59 | 567 | * be freed by calling ref_transaction_free(). |
caa4046c | 568 | */ |
c0fe4e8b NTND |
569 | struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs, |
570 | struct strbuf *err); | |
93a644ea | 571 | struct ref_transaction *ref_transaction_begin(struct strbuf *err); |
caa4046c | 572 | |
caa4046c | 573 | /* |
d1dd721f MH |
574 | * Reference transaction updates |
575 | * | |
576 | * The following four functions add a reference check or update to a | |
577 | * ref_transaction. They have some common similar parameters: | |
578 | * | |
579 | * transaction -- a pointer to an open ref_transaction, obtained | |
580 | * from ref_transaction_begin(). | |
581 | * | |
582 | * refname -- the name of the reference to be affected. | |
583 | * | |
5ac95fee MH |
584 | * new_oid -- the object ID that should be set to be the new value |
585 | * of the reference. Some functions allow this parameter to be | |
fd2ce9c0 | 586 | * NULL, meaning that the reference is not changed, or |
5ac95fee | 587 | * null_oid, meaning that the reference should be deleted. A |
fd2ce9c0 MH |
588 | * copy of this value is made in the transaction. |
589 | * | |
5ac95fee | 590 | * old_oid -- the object ID that the reference must have before |
fd2ce9c0 MH |
591 | * the update. Some functions allow this parameter to be NULL, |
592 | * meaning that the old value of the reference is not checked, | |
5ac95fee | 593 | * or null_oid, meaning that the reference must not exist |
fd2ce9c0 MH |
594 | * before the update. A copy of this value is made in the |
595 | * transaction. | |
596 | * | |
d1dd721f | 597 | * flags -- flags affecting the update, passed to |
91774afc | 598 | * update_ref_lock(). Possible flags: REF_NO_DEREF, |
5ac95fee MH |
599 | * REF_FORCE_CREATE_REFLOG. See those constants for more |
600 | * information. | |
d1dd721f MH |
601 | * |
602 | * msg -- a message describing the change (for the reflog). | |
603 | * | |
604 | * err -- a strbuf for receiving a description of any error that | |
dc72b500 | 605 | * might have occurred. |
d1dd721f MH |
606 | * |
607 | * The functions make internal copies of refname and msg, so the | |
608 | * caller retains ownership of these parameters. | |
609 | * | |
610 | * The functions return 0 on success and non-zero on failure. A | |
611 | * failure means that the transaction as a whole has failed and needs | |
612 | * to be rolled back. | |
caa4046c MH |
613 | */ |
614 | ||
caa4046c | 615 | /* |
5ac95fee MH |
616 | * The following flags can be passed to ref_transaction_update() etc. |
617 | * Internally, they are stored in `ref_update::flags`, along with some | |
618 | * internal flags. | |
619 | */ | |
620 | ||
621 | /* | |
622 | * Act on the ref directly; i.e., without dereferencing symbolic refs. | |
623 | * If this flag is not specified, then symbolic references are | |
624 | * dereferenced and the update is applied to the referent. | |
625 | */ | |
91774afc | 626 | #define REF_NO_DEREF (1 << 0) |
5ac95fee MH |
627 | |
628 | /* | |
629 | * Force the creation of a reflog for this reference, even if it | |
630 | * didn't previously have a reflog. | |
631 | */ | |
632 | #define REF_FORCE_CREATE_REFLOG (1 << 1) | |
633 | ||
e9706a18 HWN |
634 | /* |
635 | * Blindly write an object_id. This is useful for testing data corruption | |
636 | * scenarios. | |
637 | */ | |
638 | #define REF_SKIP_OID_VERIFICATION (1 << 10) | |
639 | ||
3c966c7b HWN |
640 | /* |
641 | * Skip verifying refname. This is useful for testing data corruption scenarios. | |
642 | */ | |
643 | #define REF_SKIP_REFNAME_VERIFICATION (1 << 11) | |
644 | ||
5ac95fee MH |
645 | /* |
646 | * Bitmask of all of the flags that are allowed to be passed in to | |
647 | * ref_transaction_update() and friends: | |
648 | */ | |
3c966c7b HWN |
649 | #define REF_TRANSACTION_UPDATE_ALLOWED_FLAGS \ |
650 | (REF_NO_DEREF | REF_FORCE_CREATE_REFLOG | REF_SKIP_OID_VERIFICATION | \ | |
651 | REF_SKIP_REFNAME_VERIFICATION) | |
5ac95fee MH |
652 | |
653 | /* | |
654 | * Add a reference update to transaction. `new_oid` is the value that | |
655 | * the reference should have after the update, or `null_oid` if it | |
656 | * should be deleted. If `new_oid` is NULL, then the reference is not | |
657 | * changed at all. `old_oid` is the value that the reference must have | |
658 | * before the update, or `null_oid` if it must not have existed | |
16180334 | 659 | * beforehand. The old value is checked after the lock is taken to |
89f3bbdd | 660 | * prevent races. If the old value doesn't agree with old_oid, the |
661 | * whole transaction fails. If old_oid is NULL, then the previous | |
16180334 MH |
662 | * value is not checked. |
663 | * | |
d1dd721f MH |
664 | * See the above comment "Reference transaction updates" for more |
665 | * information. | |
caa4046c | 666 | */ |
8e34800e RS |
667 | int ref_transaction_update(struct ref_transaction *transaction, |
668 | const char *refname, | |
89f3bbdd | 669 | const struct object_id *new_oid, |
670 | const struct object_id *old_oid, | |
1d147bdf | 671 | unsigned int flags, const char *msg, |
8e34800e | 672 | struct strbuf *err); |
caa4046c MH |
673 | |
674 | /* | |
89f3bbdd | 675 | * Add a reference creation to transaction. new_oid is the value that |
d1dd721f | 676 | * the reference should have after the update; it must not be |
89f3bbdd | 677 | * null_oid. It is verified that the reference does not exist |
caa4046c | 678 | * already. |
d1dd721f MH |
679 | * |
680 | * See the above comment "Reference transaction updates" for more | |
681 | * information. | |
caa4046c | 682 | */ |
b416af5b RS |
683 | int ref_transaction_create(struct ref_transaction *transaction, |
684 | const char *refname, | |
89f3bbdd | 685 | const struct object_id *new_oid, |
fec14ec3 | 686 | unsigned int flags, const char *msg, |
b416af5b | 687 | struct strbuf *err); |
caa4046c MH |
688 | |
689 | /* | |
89f3bbdd | 690 | * Add a reference deletion to transaction. If old_oid is non-NULL, |
d1dd721f | 691 | * then it holds the value that the reference should have had before |
89f3bbdd | 692 | * the update (which must not be null_oid). |
d1dd721f MH |
693 | * |
694 | * See the above comment "Reference transaction updates" for more | |
695 | * information. | |
caa4046c | 696 | */ |
8c8bdc0d RS |
697 | int ref_transaction_delete(struct ref_transaction *transaction, |
698 | const char *refname, | |
89f3bbdd | 699 | const struct object_id *old_oid, |
fb5a6bb6 | 700 | unsigned int flags, const char *msg, |
8c8bdc0d | 701 | struct strbuf *err); |
caa4046c | 702 | |
16180334 | 703 | /* |
89f3bbdd | 704 | * Verify, within a transaction, that refname has the value old_oid, |
705 | * or, if old_oid is null_oid, then verify that the reference | |
706 | * doesn't exist. old_oid must be non-NULL. | |
d1dd721f MH |
707 | * |
708 | * See the above comment "Reference transaction updates" for more | |
709 | * information. | |
16180334 MH |
710 | */ |
711 | int ref_transaction_verify(struct ref_transaction *transaction, | |
712 | const char *refname, | |
89f3bbdd | 713 | const struct object_id *old_oid, |
16180334 MH |
714 | unsigned int flags, |
715 | struct strbuf *err); | |
716 | ||
28e6a97e RS |
717 | /* Naming conflict (for example, the ref names A and A/B conflict). */ |
718 | #define TRANSACTION_NAME_CONFLICT -1 | |
719 | /* All other errors. */ | |
720 | #define TRANSACTION_GENERIC_ERROR -2 | |
30173b88 MH |
721 | |
722 | /* | |
64127575 | 723 | * Perform the preparatory stages of committing `transaction`. Acquire |
30173b88 MH |
724 | * any needed locks, check preconditions, etc.; basically, do as much |
725 | * as possible to ensure that the transaction will be able to go | |
726 | * through, stopping just short of making any irrevocable or | |
727 | * user-visible changes. The updates that this function prepares can | |
728 | * be finished up by calling `ref_transaction_commit()` or rolled back | |
729 | * by calling `ref_transaction_abort()`. | |
730 | * | |
731 | * On success, return 0 and leave the transaction in "prepared" state. | |
732 | * On failure, abort the transaction, write an error message to `err`, | |
733 | * and return one of the `TRANSACTION_*` constants. | |
734 | * | |
64127575 | 735 | * Callers who don't need such fine-grained control over committing |
30173b88 MH |
736 | * reference transactions should just call `ref_transaction_commit()`. |
737 | */ | |
738 | int ref_transaction_prepare(struct ref_transaction *transaction, | |
739 | struct strbuf *err); | |
740 | ||
741 | /* | |
742 | * Commit all of the changes that have been queued in transaction, as | |
743 | * atomically as possible. On success, return 0 and leave the | |
744 | * transaction in "closed" state. On failure, roll back the | |
745 | * transaction, write an error message to `err`, and return one of the | |
746 | * `TRANSACTION_*` constants | |
747 | */ | |
caa4046c | 748 | int ref_transaction_commit(struct ref_transaction *transaction, |
db7516ab | 749 | struct strbuf *err); |
caa4046c | 750 | |
30173b88 MH |
751 | /* |
752 | * Abort `transaction`, which has been begun and possibly prepared, | |
753 | * but not yet committed. | |
754 | */ | |
755 | int ref_transaction_abort(struct ref_transaction *transaction, | |
756 | struct strbuf *err); | |
757 | ||
58f233ce MH |
758 | /* |
759 | * Like ref_transaction_commit(), but optimized for creating | |
760 | * references when originally initializing a repository (e.g., by "git | |
761 | * clone"). It writes the new references directly to packed-refs | |
762 | * without locking the individual references. | |
763 | * | |
764 | * It is a bug to call this function when there might be other | |
765 | * processes accessing the repository or if there are existing | |
766 | * references that might conflict with the ones being created. All | |
78fb4579 | 767 | * old_oid values must either be absent or null_oid. |
58f233ce MH |
768 | */ |
769 | int initial_ref_transaction_commit(struct ref_transaction *transaction, | |
770 | struct strbuf *err); | |
771 | ||
4f2ba2d0 PS |
772 | /* |
773 | * Execute the given callback function for each of the reference updates which | |
774 | * have been queued in the given transaction. `old_oid` and `new_oid` may be | |
775 | * `NULL` pointers depending on whether the update has these object IDs set or | |
776 | * not. | |
777 | */ | |
778 | typedef void ref_transaction_for_each_queued_update_fn(const char *refname, | |
779 | const struct object_id *old_oid, | |
780 | const struct object_id *new_oid, | |
781 | void *cb_data); | |
782 | void ref_transaction_for_each_queued_update(struct ref_transaction *transaction, | |
783 | ref_transaction_for_each_queued_update_fn cb, | |
784 | void *cb_data); | |
785 | ||
026bd1d3 | 786 | /* |
30173b88 | 787 | * Free `*transaction` and all associated data. |
026bd1d3 RS |
788 | */ |
789 | void ref_transaction_free(struct ref_transaction *transaction); | |
790 | ||
4b7b520b MH |
791 | /** |
792 | * Lock, update, and unlock a single reference. This function | |
793 | * basically does a transaction containing a single call to | |
794 | * ref_transaction_update(). The parameters to this function have the | |
795 | * same meaning as the corresponding parameters to | |
796 | * ref_transaction_update(). Handle errors as requested by the `onerr` | |
797 | * argument. | |
798 | */ | |
c0fe4e8b | 799 | int refs_update_ref(struct ref_store *refs, const char *msg, const char *refname, |
ae077771 | 800 | const struct object_id *new_oid, const struct object_id *old_oid, |
c0fe4e8b | 801 | unsigned int flags, enum action_on_err onerr); |
4b7b520b | 802 | int update_ref(const char *msg, const char *refname, |
8f6dc7e3 | 803 | const struct object_id *new_oid, const struct object_id *old_oid, |
804 | unsigned int flags, enum action_on_err onerr); | |
3d9f037c | 805 | |
9b67eb6f PS |
806 | int parse_hide_refs_config(const char *var, const char *value, const char *, |
807 | struct string_list *); | |
fb58c8d5 | 808 | |
78a766ab LF |
809 | /* |
810 | * Check whether a ref is hidden. If no namespace is set, both the first and | |
811 | * the second parameter point to the full ref name. If a namespace is set and | |
812 | * the ref is inside that namespace, the first parameter is a pointer to the | |
813 | * name of the ref with the namespace prefix removed. If a namespace is set and | |
814 | * the ref is outside that namespace, the first parameter is NULL. The second | |
815 | * parameter always points to the full ref name. | |
816 | */ | |
9b67eb6f | 817 | int ref_is_hidden(const char *, const char *, const struct string_list *); |
daebaa78 | 818 | |
71e54734 HWN |
819 | /* Is this a per-worktree ref living in the refs/ namespace? */ |
820 | int is_per_worktree_ref(const char *refname); | |
821 | ||
822 | /* Describes how a refname relates to worktrees */ | |
823 | enum ref_worktree_type { | |
824 | REF_WORKTREE_CURRENT, /* implicitly per worktree, eg. HEAD or | |
825 | refs/bisect/SOMETHING */ | |
826 | REF_WORKTREE_MAIN, /* explicitly in main worktree, eg. | |
827 | main-worktree/HEAD */ | |
828 | REF_WORKTREE_OTHER, /* explicitly in named worktree, eg. | |
829 | worktrees/bla/HEAD */ | |
830 | REF_WORKTREE_SHARED, /* the default, eg. refs/heads/main */ | |
266b1827 DT |
831 | }; |
832 | ||
71e54734 HWN |
833 | /* |
834 | * Parse a `maybe_worktree_ref` as a ref that possibly refers to a worktree ref | |
835 | * (ie. either REFNAME, main-worktree/REFNAME or worktree/WORKTREE/REFNAME). It | |
836 | * returns what kind of ref was found, and in case of REF_WORKTREE_OTHER, the | |
837 | * worktree name is returned in `worktree_name` (pointing into | |
838 | * `maybe_worktree_ref`) and `worktree_name_length`. The bare refname (the | |
839 | * refname stripped of prefixes) is returned in `bare_refname`. The | |
840 | * `worktree_name`, `worktree_name_length` and `bare_refname` arguments may be | |
841 | * NULL. | |
842 | */ | |
843 | enum ref_worktree_type parse_worktree_ref(const char *maybe_worktree_ref, | |
844 | const char **worktree_name, | |
845 | int *worktree_name_length, | |
846 | const char **bare_refname); | |
266b1827 | 847 | |
fa5b1830 MH |
848 | enum expire_reflog_flags { |
849 | EXPIRE_REFLOGS_DRY_RUN = 1 << 0, | |
850 | EXPIRE_REFLOGS_UPDATE_REF = 1 << 1, | |
fcd2c3d9 | 851 | EXPIRE_REFLOGS_REWRITE = 1 << 2, |
fa5b1830 MH |
852 | }; |
853 | ||
854 | /* | |
855 | * The following interface is used for reflog expiration. The caller | |
856 | * calls reflog_expire(), supplying it with three callback functions, | |
857 | * of the following types. The callback functions define the | |
858 | * expiration policy that is desired. | |
859 | * | |
860 | * reflog_expiry_prepare_fn -- Called once after the reference is | |
ae35e16c | 861 | * locked. Called with the OID of the locked reference. |
fa5b1830 MH |
862 | * |
863 | * reflog_expiry_should_prune_fn -- Called once for each entry in the | |
864 | * existing reflog. It should return true iff that entry should be | |
865 | * pruned. | |
866 | * | |
867 | * reflog_expiry_cleanup_fn -- Called once before the reference is | |
868 | * unlocked again. | |
869 | */ | |
870 | typedef void reflog_expiry_prepare_fn(const char *refname, | |
4322478a | 871 | const struct object_id *oid, |
fa5b1830 | 872 | void *cb_data); |
4322478a | 873 | typedef int reflog_expiry_should_prune_fn(struct object_id *ooid, |
874 | struct object_id *noid, | |
fa5b1830 | 875 | const char *email, |
dddbad72 | 876 | timestamp_t timestamp, int tz, |
fa5b1830 MH |
877 | const char *message, void *cb_data); |
878 | typedef void reflog_expiry_cleanup_fn(void *cb_data); | |
879 | ||
880 | /* | |
cc40b5ce ÆAB |
881 | * Expire reflog entries for the specified reference. |
882 | * flags is a combination of the constants in | |
fa5b1830 MH |
883 | * enum expire_reflog_flags. The three function pointers are described |
884 | * above. On success, return zero. | |
885 | */ | |
7d2df051 NTND |
886 | int refs_reflog_expire(struct ref_store *refs, |
887 | const char *refname, | |
7d2df051 NTND |
888 | unsigned int flags, |
889 | reflog_expiry_prepare_fn prepare_fn, | |
890 | reflog_expiry_should_prune_fn should_prune_fn, | |
891 | reflog_expiry_cleanup_fn cleanup_fn, | |
892 | void *policy_cb_data); | |
cc40b5ce | 893 | int reflog_expire(const char *refname, |
1354c9b2 MH |
894 | unsigned int flags, |
895 | reflog_expiry_prepare_fn prepare_fn, | |
896 | reflog_expiry_should_prune_fn should_prune_fn, | |
897 | reflog_expiry_cleanup_fn cleanup_fn, | |
898 | void *policy_cb_data); | |
fa5b1830 | 899 | |
64a74161 | 900 | struct ref_store *get_main_ref_store(struct repository *r); |
126c1cce HW |
901 | |
902 | /** | |
903 | * Submodules | |
904 | * ---------- | |
905 | * | |
906 | * If you want to iterate the refs of a submodule you first need to add the | |
907 | * submodules object database. You can do this by a code-snippet like | |
908 | * this: | |
909 | * | |
910 | * const char *path = "path/to/submodule" | |
911 | * if (add_submodule_odb(path)) | |
912 | * die("Error submodule '%s' not populated.", path); | |
913 | * | |
914 | * `add_submodule_odb()` will return zero on success. If you | |
915 | * do not do this you will get an error for each ref that it does not point | |
916 | * to a valid object. | |
917 | * | |
918 | * Note: As a side-effect of this you cannot safely assume that all | |
919 | * objects you lookup are available in superproject. All submodule objects | |
920 | * will be available the same way as the superprojects objects. | |
921 | * | |
922 | * Example: | |
923 | * -------- | |
924 | * | |
925 | * ---- | |
926 | * static int handle_remote_ref(const char *refname, | |
927 | * const unsigned char *sha1, int flags, void *cb_data) | |
928 | * { | |
929 | * struct strbuf *output = cb_data; | |
930 | * strbuf_addf(output, "%s\n", refname); | |
931 | * return 0; | |
932 | * } | |
933 | * | |
934 | */ | |
935 | ||
18d0002d NTND |
936 | /* |
937 | * Return the ref_store instance for the specified submodule. For the | |
938 | * main repository, use submodule==NULL; such a call cannot fail. For | |
939 | * a submodule, the submodule must exist and be a nonbare repository, | |
940 | * otherwise return NULL. If the requested reference store has not yet | |
941 | * been initialized, initialize it first. | |
942 | * | |
943 | * For backwards compatibility, submodule=="" is treated the same as | |
944 | * submodule==NULL. | |
945 | */ | |
946 | struct ref_store *get_submodule_ref_store(const char *submodule); | |
17eff96b | 947 | struct ref_store *get_worktree_ref_store(const struct worktree *wt); |
077be78d | 948 | |
b9342b3f DS |
949 | /* |
950 | * Some of the names specified by refs have special meaning to Git. | |
951 | * Organize these namespaces in a comon 'ref_namespace' array for | |
952 | * reference from multiple places in the codebase. | |
953 | */ | |
954 | ||
955 | struct ref_namespace_info { | |
956 | char *ref; | |
957 | enum decoration_type decoration; | |
958 | ||
959 | /* | |
960 | * If 'exact' is true, then we must match the 'ref' exactly. | |
961 | * Otherwise, use a prefix match. | |
962 | * | |
963 | * 'ref_updated' is for internal use. It represents whether the | |
964 | * 'ref' value was replaced from its original literal version. | |
965 | */ | |
966 | unsigned exact:1, | |
967 | ref_updated:1; | |
968 | }; | |
969 | ||
970 | enum ref_namespace { | |
971 | NAMESPACE_HEAD, | |
972 | NAMESPACE_BRANCHES, | |
973 | NAMESPACE_TAGS, | |
974 | NAMESPACE_REMOTE_REFS, | |
975 | NAMESPACE_STASH, | |
976 | NAMESPACE_REPLACE, | |
977 | NAMESPACE_NOTES, | |
978 | NAMESPACE_PREFETCH, | |
979 | NAMESPACE_REWRITTEN, | |
980 | ||
981 | /* Must be last */ | |
982 | NAMESPACE__COUNT | |
983 | }; | |
984 | ||
985 | /* See refs.c for the contents of this array. */ | |
986 | extern struct ref_namespace_info ref_namespace[NAMESPACE__COUNT]; | |
987 | ||
988 | /* | |
989 | * Some ref namespaces can be modified by config values or environment | |
990 | * variables. Modify a namespace as specified by its ref_namespace key. | |
991 | */ | |
992 | void update_ref_namespace(enum ref_namespace namespace, char *ref); | |
993 | ||
95fc7512 | 994 | #endif /* REFS_H */ |