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Commit | Line | Data |
---|---|---|
7bd9bcf3 MH |
1 | /* |
2 | * The backend-independent part of the reference module. | |
3 | */ | |
4 | ||
95fc7512 | 5 | #include "cache.h" |
b2141fc1 | 6 | #include "config.h" |
7d4558c4 | 7 | #include "hashmap.h" |
697cc8ef | 8 | #include "lockfile.h" |
b05855b5 | 9 | #include "iterator.h" |
85023577 | 10 | #include "refs.h" |
4cb77009 | 11 | #include "refs/refs-internal.h" |
67541597 | 12 | #include "run-command.h" |
5e3aba33 | 13 | #include "hook.h" |
cbd53a21 | 14 | #include "object-store.h" |
cf0adba7 JH |
15 | #include "object.h" |
16 | #include "tag.h" | |
5d0bc90e | 17 | #include "submodule.h" |
17eff96b | 18 | #include "worktree.h" |
dbbcd44f | 19 | #include "strvec.h" |
23a3f0cb | 20 | #include "repository.h" |
67541597 | 21 | #include "sigchain.h" |
3581d793 | 22 | |
3dce444f RS |
23 | /* |
24 | * List of all available backends | |
25 | */ | |
26 | static struct ref_storage_be *refs_backends = &refs_be_files; | |
27 | ||
28 | static struct ref_storage_be *find_ref_storage_backend(const char *name) | |
29 | { | |
30 | struct ref_storage_be *be; | |
31 | for (be = refs_backends; be; be = be->next) | |
32 | if (!strcmp(be->name, name)) | |
33 | return be; | |
34 | return NULL; | |
35 | } | |
36 | ||
bc5fd6d3 | 37 | /* |
dde8a902 DT |
38 | * How to handle various characters in refnames: |
39 | * 0: An acceptable character for refs | |
5e650228 JH |
40 | * 1: End-of-component |
41 | * 2: ., look for a preceding . to reject .. in refs | |
42 | * 3: {, look for a preceding @ to reject @{ in refs | |
53a8555e | 43 | * 4: A bad character: ASCII control characters, and |
cd377f45 JK |
44 | * ":", "?", "[", "\", "^", "~", SP, or TAB |
45 | * 5: *, reject unless REFNAME_REFSPEC_PATTERN is set | |
dde8a902 DT |
46 | */ |
47 | static unsigned char refname_disposition[256] = { | |
5e650228 JH |
48 | 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
49 | 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, | |
cd377f45 | 50 | 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 1, |
5e650228 | 51 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4, |
dde8a902 | 52 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
5e650228 JH |
53 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0, |
54 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
55 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4 | |
dde8a902 DT |
56 | }; |
57 | ||
58 | /* | |
59 | * Try to read one refname component from the front of refname. | |
60 | * Return the length of the component found, or -1 if the component is | |
61 | * not legal. It is legal if it is something reasonable to have under | |
62 | * ".git/refs/"; We do not like it if: | |
bc5fd6d3 | 63 | * |
1de16aec | 64 | * - it begins with ".", or |
bc5fd6d3 | 65 | * - it has double dots "..", or |
53a8555e | 66 | * - it has ASCII control characters, or |
cd377f45 JK |
67 | * - it has ":", "?", "[", "\", "^", "~", SP, or TAB anywhere, or |
68 | * - it has "*" anywhere unless REFNAME_REFSPEC_PATTERN is set, or | |
53a8555e JK |
69 | * - it ends with a "/", or |
70 | * - it ends with ".lock", or | |
71 | * - it contains a "@{" portion | |
1de16aec NTND |
72 | * |
73 | * When sanitized is not NULL, instead of rejecting the input refname | |
74 | * as an error, try to come up with a usable replacement for the input | |
75 | * refname in it. | |
bc5fd6d3 | 76 | */ |
1de16aec NTND |
77 | static int check_refname_component(const char *refname, int *flags, |
78 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
79 | { |
80 | const char *cp; | |
81 | char last = '\0'; | |
1de16aec NTND |
82 | size_t component_start = 0; /* garbage - not a reasonable initial value */ |
83 | ||
84 | if (sanitized) | |
85 | component_start = sanitized->len; | |
bc5fd6d3 MH |
86 | |
87 | for (cp = refname; ; cp++) { | |
dde8a902 DT |
88 | int ch = *cp & 255; |
89 | unsigned char disp = refname_disposition[ch]; | |
1de16aec NTND |
90 | |
91 | if (sanitized && disp != 1) | |
92 | strbuf_addch(sanitized, ch); | |
93 | ||
dde8a902 | 94 | switch (disp) { |
5e650228 | 95 | case 1: |
dde8a902 | 96 | goto out; |
5e650228 | 97 | case 2: |
1de16aec NTND |
98 | if (last == '.') { /* Refname contains "..". */ |
99 | if (sanitized) | |
100 | /* collapse ".." to single "." */ | |
101 | strbuf_setlen(sanitized, sanitized->len - 1); | |
102 | else | |
103 | return -1; | |
104 | } | |
dde8a902 | 105 | break; |
5e650228 | 106 | case 3: |
1de16aec NTND |
107 | if (last == '@') { /* Refname contains "@{". */ |
108 | if (sanitized) | |
109 | sanitized->buf[sanitized->len-1] = '-'; | |
110 | else | |
111 | return -1; | |
112 | } | |
bc5fd6d3 | 113 | break; |
5e650228 | 114 | case 4: |
1de16aec NTND |
115 | /* forbidden char */ |
116 | if (sanitized) | |
117 | sanitized->buf[sanitized->len-1] = '-'; | |
118 | else | |
119 | return -1; | |
120 | break; | |
cd377f45 | 121 | case 5: |
1de16aec NTND |
122 | if (!(*flags & REFNAME_REFSPEC_PATTERN)) { |
123 | /* refspec can't be a pattern */ | |
124 | if (sanitized) | |
125 | sanitized->buf[sanitized->len-1] = '-'; | |
126 | else | |
127 | return -1; | |
128 | } | |
cd377f45 JK |
129 | |
130 | /* | |
131 | * Unset the pattern flag so that we only accept | |
132 | * a single asterisk for one side of refspec. | |
133 | */ | |
134 | *flags &= ~ REFNAME_REFSPEC_PATTERN; | |
135 | break; | |
dde8a902 | 136 | } |
bc5fd6d3 MH |
137 | last = ch; |
138 | } | |
dde8a902 | 139 | out: |
bc5fd6d3 | 140 | if (cp == refname) |
dac529e4 | 141 | return 0; /* Component has zero length. */ |
1de16aec NTND |
142 | |
143 | if (refname[0] == '.') { /* Component starts with '.'. */ | |
144 | if (sanitized) | |
145 | sanitized->buf[component_start] = '-'; | |
146 | else | |
147 | return -1; | |
148 | } | |
7108ad23 | 149 | if (cp - refname >= LOCK_SUFFIX_LEN && |
1de16aec NTND |
150 | !memcmp(cp - LOCK_SUFFIX_LEN, LOCK_SUFFIX, LOCK_SUFFIX_LEN)) { |
151 | if (!sanitized) | |
152 | return -1; | |
153 | /* Refname ends with ".lock". */ | |
154 | while (strbuf_strip_suffix(sanitized, LOCK_SUFFIX)) { | |
155 | /* try again in case we have .lock.lock */ | |
156 | } | |
157 | } | |
bc5fd6d3 MH |
158 | return cp - refname; |
159 | } | |
160 | ||
1de16aec NTND |
161 | static int check_or_sanitize_refname(const char *refname, int flags, |
162 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
163 | { |
164 | int component_len, component_count = 0; | |
165 | ||
1de16aec | 166 | if (!strcmp(refname, "@")) { |
9ba89f48 | 167 | /* Refname is a single character '@'. */ |
1de16aec NTND |
168 | if (sanitized) |
169 | strbuf_addch(sanitized, '-'); | |
170 | else | |
171 | return -1; | |
172 | } | |
9ba89f48 | 173 | |
bc5fd6d3 | 174 | while (1) { |
1de16aec NTND |
175 | if (sanitized && sanitized->len) |
176 | strbuf_complete(sanitized, '/'); | |
177 | ||
bc5fd6d3 | 178 | /* We are at the start of a path component. */ |
1de16aec NTND |
179 | component_len = check_refname_component(refname, &flags, |
180 | sanitized); | |
181 | if (sanitized && component_len == 0) | |
182 | ; /* OK, omit empty component */ | |
183 | else if (component_len <= 0) | |
cd377f45 JK |
184 | return -1; |
185 | ||
bc5fd6d3 MH |
186 | component_count++; |
187 | if (refname[component_len] == '\0') | |
188 | break; | |
189 | /* Skip to next component. */ | |
190 | refname += component_len + 1; | |
191 | } | |
192 | ||
1de16aec NTND |
193 | if (refname[component_len - 1] == '.') { |
194 | /* Refname ends with '.'. */ | |
195 | if (sanitized) | |
196 | ; /* omit ending dot */ | |
197 | else | |
198 | return -1; | |
199 | } | |
bc5fd6d3 MH |
200 | if (!(flags & REFNAME_ALLOW_ONELEVEL) && component_count < 2) |
201 | return -1; /* Refname has only one component. */ | |
202 | return 0; | |
203 | } | |
204 | ||
1de16aec NTND |
205 | int check_refname_format(const char *refname, int flags) |
206 | { | |
207 | return check_or_sanitize_refname(refname, flags, NULL); | |
208 | } | |
209 | ||
210 | void sanitize_refname_component(const char *refname, struct strbuf *out) | |
211 | { | |
212 | if (check_or_sanitize_refname(refname, REFNAME_ALLOW_ONELEVEL, out)) | |
213 | BUG("sanitizing refname '%s' check returned error", refname); | |
214 | } | |
215 | ||
4cb77009 | 216 | int refname_is_safe(const char *refname) |
d0f810f0 | 217 | { |
39950fef MH |
218 | const char *rest; |
219 | ||
220 | if (skip_prefix(refname, "refs/", &rest)) { | |
d0f810f0 RS |
221 | char *buf; |
222 | int result; | |
e40f3557 MH |
223 | size_t restlen = strlen(rest); |
224 | ||
225 | /* rest must not be empty, or start or end with "/" */ | |
226 | if (!restlen || *rest == '/' || rest[restlen - 1] == '/') | |
227 | return 0; | |
d0f810f0 | 228 | |
d0f810f0 RS |
229 | /* |
230 | * Does the refname try to escape refs/? | |
231 | * For example: refs/foo/../bar is safe but refs/foo/../../bar | |
232 | * is not. | |
233 | */ | |
e40f3557 MH |
234 | buf = xmallocz(restlen); |
235 | result = !normalize_path_copy(buf, rest) && !strcmp(buf, rest); | |
d0f810f0 RS |
236 | free(buf); |
237 | return result; | |
238 | } | |
35db25c6 MH |
239 | |
240 | do { | |
d0f810f0 RS |
241 | if (!isupper(*refname) && *refname != '_') |
242 | return 0; | |
243 | refname++; | |
35db25c6 | 244 | } while (*refname); |
d0f810f0 RS |
245 | return 1; |
246 | } | |
247 | ||
67be7c5a MH |
248 | /* |
249 | * Return true if refname, which has the specified oid and flags, can | |
250 | * be resolved to an object in the database. If the referred-to object | |
251 | * does not exist, emit a warning and return false. | |
252 | */ | |
253 | int ref_resolves_to_object(const char *refname, | |
9bc45a28 | 254 | struct repository *repo, |
67be7c5a MH |
255 | const struct object_id *oid, |
256 | unsigned int flags) | |
257 | { | |
258 | if (flags & REF_ISBROKEN) | |
259 | return 0; | |
9bc45a28 | 260 | if (!repo_has_object_file(repo, oid)) { |
661558f0 | 261 | error(_("%s does not point to a valid object!"), refname); |
67be7c5a MH |
262 | return 0; |
263 | } | |
264 | return 1; | |
265 | } | |
266 | ||
7d2df051 NTND |
267 | char *refs_resolve_refdup(struct ref_store *refs, |
268 | const char *refname, int resolve_flags, | |
0f2dc722 | 269 | struct object_id *oid, int *flags) |
7d2df051 NTND |
270 | { |
271 | const char *result; | |
272 | ||
273 | result = refs_resolve_ref_unsafe(refs, refname, resolve_flags, | |
49e61479 | 274 | oid, flags); |
7d2df051 NTND |
275 | return xstrdup_or_null(result); |
276 | } | |
277 | ||
7bd9bcf3 | 278 | char *resolve_refdup(const char *refname, int resolve_flags, |
0f2dc722 | 279 | struct object_id *oid, int *flags) |
e1e22e37 | 280 | { |
23a3f0cb | 281 | return refs_resolve_refdup(get_main_ref_store(the_repository), |
7d2df051 | 282 | refname, resolve_flags, |
0f2dc722 | 283 | oid, flags); |
cddc4258 MH |
284 | } |
285 | ||
7bd9bcf3 MH |
286 | /* The argument to filter_refs */ |
287 | struct ref_filter { | |
288 | const char *pattern; | |
9ab9b5df | 289 | const char *prefix; |
7bd9bcf3 MH |
290 | each_ref_fn *fn; |
291 | void *cb_data; | |
292 | }; | |
432ad41e | 293 | |
7d2df051 | 294 | int refs_read_ref_full(struct ref_store *refs, const char *refname, |
34c290a6 | 295 | int resolve_flags, struct object_id *oid, int *flags) |
732134ed | 296 | { |
49e61479 | 297 | if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, oid, flags)) |
7bd9bcf3 MH |
298 | return 0; |
299 | return -1; | |
732134ed MH |
300 | } |
301 | ||
34c290a6 | 302 | int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags) |
7d2df051 | 303 | { |
23a3f0cb | 304 | return refs_read_ref_full(get_main_ref_store(the_repository), refname, |
34c290a6 | 305 | resolve_flags, oid, flags); |
7d2df051 NTND |
306 | } |
307 | ||
34c290a6 | 308 | int read_ref(const char *refname, struct object_id *oid) |
cddc4258 | 309 | { |
34c290a6 | 310 | return read_ref_full(refname, RESOLVE_REF_READING, oid, NULL); |
c774aab9 JP |
311 | } |
312 | ||
3f9f1acc | 313 | int refs_ref_exists(struct ref_store *refs, const char *refname) |
b3cd33d0 NTND |
314 | { |
315 | return !!refs_resolve_ref_unsafe(refs, refname, RESOLVE_REF_READING, NULL, NULL); | |
316 | } | |
317 | ||
7bd9bcf3 | 318 | int ref_exists(const char *refname) |
bc5fd6d3 | 319 | { |
b3cd33d0 | 320 | return refs_ref_exists(get_main_ref_store(the_repository), refname); |
bc5fd6d3 MH |
321 | } |
322 | ||
7bd9bcf3 MH |
323 | static int filter_refs(const char *refname, const struct object_id *oid, |
324 | int flags, void *data) | |
432ad41e | 325 | { |
7bd9bcf3 MH |
326 | struct ref_filter *filter = (struct ref_filter *)data; |
327 | ||
55d34269 | 328 | if (wildmatch(filter->pattern, refname, 0)) |
7bd9bcf3 | 329 | return 0; |
9ab9b5df RA |
330 | if (filter->prefix) |
331 | skip_prefix(refname, filter->prefix, &refname); | |
7bd9bcf3 | 332 | return filter->fn(refname, oid, flags, filter->cb_data); |
432ad41e MH |
333 | } |
334 | ||
ac2ed0d7 | 335 | enum peel_status peel_object(const struct object_id *name, struct object_id *oid) |
c774aab9 | 336 | { |
45a187cc | 337 | struct object *o = lookup_unknown_object(the_repository, name); |
c774aab9 | 338 | |
7bd9bcf3 | 339 | if (o->type == OBJ_NONE) { |
0df8e965 | 340 | int type = oid_object_info(the_repository, name, NULL); |
6da43d93 | 341 | if (type < 0 || !object_as_type(o, type, 0)) |
7bd9bcf3 MH |
342 | return PEEL_INVALID; |
343 | } | |
bc5fd6d3 | 344 | |
7bd9bcf3 MH |
345 | if (o->type != OBJ_TAG) |
346 | return PEEL_NON_TAG; | |
e1980c9d | 347 | |
7bd9bcf3 MH |
348 | o = deref_tag_noverify(o); |
349 | if (!o) | |
350 | return PEEL_INVALID; | |
351 | ||
ac2ed0d7 | 352 | oidcpy(oid, &o->oid); |
7bd9bcf3 | 353 | return PEEL_PEELED; |
e1980c9d JH |
354 | } |
355 | ||
7bd9bcf3 MH |
356 | struct warn_if_dangling_data { |
357 | FILE *fp; | |
358 | const char *refname; | |
359 | const struct string_list *refnames; | |
360 | const char *msg_fmt; | |
361 | }; | |
bc5fd6d3 | 362 | |
7bd9bcf3 MH |
363 | static int warn_if_dangling_symref(const char *refname, const struct object_id *oid, |
364 | int flags, void *cb_data) | |
365 | { | |
366 | struct warn_if_dangling_data *d = cb_data; | |
367 | const char *resolves_to; | |
bc5fd6d3 | 368 | |
7bd9bcf3 MH |
369 | if (!(flags & REF_ISSYMREF)) |
370 | return 0; | |
bc5fd6d3 | 371 | |
744c040b | 372 | resolves_to = resolve_ref_unsafe(refname, 0, NULL, NULL); |
7bd9bcf3 MH |
373 | if (!resolves_to |
374 | || (d->refname | |
375 | ? strcmp(resolves_to, d->refname) | |
376 | : !string_list_has_string(d->refnames, resolves_to))) { | |
377 | return 0; | |
378 | } | |
bc5fd6d3 | 379 | |
7bd9bcf3 MH |
380 | fprintf(d->fp, d->msg_fmt, refname); |
381 | fputc('\n', d->fp); | |
382 | return 0; | |
bc5fd6d3 MH |
383 | } |
384 | ||
7bd9bcf3 | 385 | void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname) |
f348ac92 | 386 | { |
7bd9bcf3 MH |
387 | struct warn_if_dangling_data data; |
388 | ||
389 | data.fp = fp; | |
390 | data.refname = refname; | |
391 | data.refnames = NULL; | |
392 | data.msg_fmt = msg_fmt; | |
393 | for_each_rawref(warn_if_dangling_symref, &data); | |
f348ac92 MH |
394 | } |
395 | ||
7bd9bcf3 | 396 | void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames) |
432ad41e | 397 | { |
7bd9bcf3 | 398 | struct warn_if_dangling_data data; |
432ad41e | 399 | |
7bd9bcf3 MH |
400 | data.fp = fp; |
401 | data.refname = NULL; | |
402 | data.refnames = refnames; | |
403 | data.msg_fmt = msg_fmt; | |
404 | for_each_rawref(warn_if_dangling_symref, &data); | |
432ad41e MH |
405 | } |
406 | ||
7d2df051 NTND |
407 | int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
408 | { | |
409 | return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data); | |
410 | } | |
411 | ||
7bd9bcf3 | 412 | int for_each_tag_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 413 | { |
23a3f0cb | 414 | return refs_for_each_tag_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
415 | } |
416 | ||
7d2df051 NTND |
417 | int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
418 | { | |
419 | return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data); | |
432ad41e MH |
420 | } |
421 | ||
7bd9bcf3 | 422 | int for_each_branch_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 423 | { |
23a3f0cb | 424 | return refs_for_each_branch_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
425 | } |
426 | ||
7d2df051 NTND |
427 | int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
428 | { | |
429 | return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data); | |
202a56a9 | 430 | } |
432ad41e | 431 | |
7bd9bcf3 | 432 | int for_each_remote_ref(each_ref_fn fn, void *cb_data) |
e9c4c111 | 433 | { |
23a3f0cb | 434 | return refs_for_each_remote_ref(get_main_ref_store(the_repository), fn, cb_data); |
202a56a9 MH |
435 | } |
436 | ||
7bd9bcf3 MH |
437 | int head_ref_namespaced(each_ref_fn fn, void *cb_data) |
438 | { | |
439 | struct strbuf buf = STRBUF_INIT; | |
440 | int ret = 0; | |
441 | struct object_id oid; | |
442 | int flag; | |
c774aab9 | 443 | |
7bd9bcf3 | 444 | strbuf_addf(&buf, "%sHEAD", get_git_namespace()); |
34c290a6 | 445 | if (!read_ref_full(buf.buf, RESOLVE_REF_READING, &oid, &flag)) |
7bd9bcf3 MH |
446 | ret = fn(buf.buf, &oid, flag, cb_data); |
447 | strbuf_release(&buf); | |
c774aab9 | 448 | |
7bd9bcf3 | 449 | return ret; |
e9c4c111 | 450 | } |
c774aab9 | 451 | |
65516f58 RA |
452 | void normalize_glob_ref(struct string_list_item *item, const char *prefix, |
453 | const char *pattern) | |
454 | { | |
455 | struct strbuf normalized_pattern = STRBUF_INIT; | |
456 | ||
457 | if (*pattern == '/') | |
458 | BUG("pattern must not start with '/'"); | |
459 | ||
460 | if (prefix) { | |
461 | strbuf_addstr(&normalized_pattern, prefix); | |
462 | } | |
463 | else if (!starts_with(pattern, "refs/")) | |
464 | strbuf_addstr(&normalized_pattern, "refs/"); | |
465 | strbuf_addstr(&normalized_pattern, pattern); | |
466 | strbuf_strip_suffix(&normalized_pattern, "/"); | |
467 | ||
468 | item->string = strbuf_detach(&normalized_pattern, NULL); | |
469 | item->util = has_glob_specials(pattern) ? NULL : item->string; | |
470 | strbuf_release(&normalized_pattern); | |
471 | } | |
472 | ||
7bd9bcf3 MH |
473 | int for_each_glob_ref_in(each_ref_fn fn, const char *pattern, |
474 | const char *prefix, void *cb_data) | |
662428f4 | 475 | { |
7bd9bcf3 MH |
476 | struct strbuf real_pattern = STRBUF_INIT; |
477 | struct ref_filter filter; | |
478 | int ret; | |
d08bae7e | 479 | |
59556548 | 480 | if (!prefix && !starts_with(pattern, "refs/")) |
d08bae7e | 481 | strbuf_addstr(&real_pattern, "refs/"); |
b09fe971 IL |
482 | else if (prefix) |
483 | strbuf_addstr(&real_pattern, prefix); | |
d08bae7e IL |
484 | strbuf_addstr(&real_pattern, pattern); |
485 | ||
894a9d33 | 486 | if (!has_glob_specials(pattern)) { |
9517e6b8 | 487 | /* Append implied '/' '*' if not present. */ |
00b6c178 | 488 | strbuf_complete(&real_pattern, '/'); |
d08bae7e IL |
489 | /* No need to check for '*', there is none. */ |
490 | strbuf_addch(&real_pattern, '*'); | |
491 | } | |
492 | ||
493 | filter.pattern = real_pattern.buf; | |
9ab9b5df | 494 | filter.prefix = prefix; |
d08bae7e IL |
495 | filter.fn = fn; |
496 | filter.cb_data = cb_data; | |
497 | ret = for_each_ref(filter_refs, &filter); | |
498 | ||
499 | strbuf_release(&real_pattern); | |
500 | return ret; | |
501 | } | |
502 | ||
b09fe971 IL |
503 | int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data) |
504 | { | |
505 | return for_each_glob_ref_in(fn, pattern, NULL, cb_data); | |
506 | } | |
507 | ||
4577e483 | 508 | const char *prettify_refname(const char *name) |
a9c37a72 | 509 | { |
3e5b36c6 SG |
510 | if (skip_prefix(name, "refs/heads/", &name) || |
511 | skip_prefix(name, "refs/tags/", &name) || | |
512 | skip_prefix(name, "refs/remotes/", &name)) | |
513 | ; /* nothing */ | |
514 | return name; | |
a9c37a72 DB |
515 | } |
516 | ||
54457fe5 | 517 | static const char *ref_rev_parse_rules[] = { |
79803322 SP |
518 | "%.*s", |
519 | "refs/%.*s", | |
520 | "refs/tags/%.*s", | |
521 | "refs/heads/%.*s", | |
522 | "refs/remotes/%.*s", | |
523 | "refs/remotes/%.*s/HEAD", | |
524 | NULL | |
525 | }; | |
526 | ||
60650a48 JH |
527 | #define NUM_REV_PARSE_RULES (ARRAY_SIZE(ref_rev_parse_rules) - 1) |
528 | ||
529 | /* | |
530 | * Is it possible that the caller meant full_name with abbrev_name? | |
531 | * If so return a non-zero value to signal "yes"; the magnitude of | |
532 | * the returned value gives the precedence used for disambiguation. | |
533 | * | |
534 | * If abbrev_name cannot mean full_name, return 0. | |
535 | */ | |
54457fe5 | 536 | int refname_match(const char *abbrev_name, const char *full_name) |
79803322 SP |
537 | { |
538 | const char **p; | |
539 | const int abbrev_name_len = strlen(abbrev_name); | |
60650a48 | 540 | const int num_rules = NUM_REV_PARSE_RULES; |
79803322 | 541 | |
60650a48 JH |
542 | for (p = ref_rev_parse_rules; *p; p++) |
543 | if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) | |
544 | return &ref_rev_parse_rules[num_rules] - p; | |
79803322 SP |
545 | |
546 | return 0; | |
547 | } | |
548 | ||
b4be7410 BW |
549 | /* |
550 | * Given a 'prefix' expand it by the rules in 'ref_rev_parse_rules' and add | |
551 | * the results to 'prefixes' | |
552 | */ | |
c972bf4c | 553 | void expand_ref_prefix(struct strvec *prefixes, const char *prefix) |
b4be7410 BW |
554 | { |
555 | const char **p; | |
556 | int len = strlen(prefix); | |
557 | ||
558 | for (p = ref_rev_parse_rules; *p; p++) | |
c972bf4c | 559 | strvec_pushf(prefixes, *p, len, prefix); |
b4be7410 BW |
560 | } |
561 | ||
675704c7 JS |
562 | static const char default_branch_name_advice[] = N_( |
563 | "Using '%s' as the name for the initial branch. This default branch name\n" | |
564 | "is subject to change. To configure the initial branch name to use in all\n" | |
565 | "of your new repositories, which will suppress this warning, call:\n" | |
566 | "\n" | |
567 | "\tgit config --global init.defaultBranch <name>\n" | |
568 | "\n" | |
569 | "Names commonly chosen instead of 'master' are 'main', 'trunk' and\n" | |
570 | "'development'. The just-created branch can be renamed via this command:\n" | |
571 | "\n" | |
572 | "\tgit branch -m <name>\n" | |
573 | ); | |
574 | ||
cc0f13c5 | 575 | char *repo_default_branch_name(struct repository *r, int quiet) |
8747ebb7 DGW |
576 | { |
577 | const char *config_key = "init.defaultbranch"; | |
578 | const char *config_display_key = "init.defaultBranch"; | |
579 | char *ret = NULL, *full_ref; | |
704fed9e | 580 | const char *env = getenv("GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME"); |
8747ebb7 | 581 | |
704fed9e JS |
582 | if (env && *env) |
583 | ret = xstrdup(env); | |
584 | else if (repo_config_get_string(r, config_key, &ret) < 0) | |
8747ebb7 DGW |
585 | die(_("could not retrieve `%s`"), config_display_key); |
586 | ||
675704c7 | 587 | if (!ret) { |
8747ebb7 | 588 | ret = xstrdup("master"); |
675704c7 JS |
589 | if (!quiet) |
590 | advise(_(default_branch_name_advice), ret); | |
591 | } | |
8747ebb7 DGW |
592 | |
593 | full_ref = xstrfmt("refs/heads/%s", ret); | |
594 | if (check_refname_format(full_ref, 0)) | |
595 | die(_("invalid branch name: %s = %s"), config_display_key, ret); | |
596 | free(full_ref); | |
597 | ||
598 | return ret; | |
599 | } | |
600 | ||
cc0f13c5 | 601 | const char *git_default_branch_name(int quiet) |
8747ebb7 DGW |
602 | { |
603 | static char *ret; | |
604 | ||
605 | if (!ret) | |
cc0f13c5 | 606 | ret = repo_default_branch_name(the_repository, quiet); |
8747ebb7 DGW |
607 | |
608 | return ret; | |
609 | } | |
610 | ||
ff74f7f1 JH |
611 | /* |
612 | * *string and *len will only be substituted, and *string returned (for | |
613 | * later free()ing) if the string passed in is a magic short-hand form | |
614 | * to name a branch. | |
615 | */ | |
8f56e9d4 | 616 | static char *substitute_branch_name(struct repository *r, |
f24c30e0 JT |
617 | const char **string, int *len, |
618 | int nonfatal_dangling_mark) | |
ff74f7f1 JH |
619 | { |
620 | struct strbuf buf = STRBUF_INIT; | |
f24c30e0 JT |
621 | struct interpret_branch_name_options options = { |
622 | .nonfatal_dangling_mark = nonfatal_dangling_mark | |
623 | }; | |
a4f66a78 | 624 | int ret = repo_interpret_branch_name(r, *string, *len, &buf, &options); |
ff74f7f1 JH |
625 | |
626 | if (ret == *len) { | |
627 | size_t size; | |
628 | *string = strbuf_detach(&buf, &size); | |
629 | *len = size; | |
630 | return (char *)*string; | |
631 | } | |
632 | ||
633 | return NULL; | |
634 | } | |
635 | ||
d8984c53 | 636 | int repo_dwim_ref(struct repository *r, const char *str, int len, |
f24c30e0 | 637 | struct object_id *oid, char **ref, int nonfatal_dangling_mark) |
ff74f7f1 | 638 | { |
f24c30e0 JT |
639 | char *last_branch = substitute_branch_name(r, &str, &len, |
640 | nonfatal_dangling_mark); | |
d8984c53 | 641 | int refs_found = expand_ref(r, str, len, oid, ref); |
41da7111 NTND |
642 | free(last_branch); |
643 | return refs_found; | |
644 | } | |
645 | ||
0b1dbf53 NTND |
646 | int expand_ref(struct repository *repo, const char *str, int len, |
647 | struct object_id *oid, char **ref) | |
41da7111 | 648 | { |
ff74f7f1 JH |
649 | const char **p, *r; |
650 | int refs_found = 0; | |
6cd4a898 | 651 | struct strbuf fullref = STRBUF_INIT; |
ff74f7f1 JH |
652 | |
653 | *ref = NULL; | |
654 | for (p = ref_rev_parse_rules; *p; p++) { | |
cca5fa64 | 655 | struct object_id oid_from_ref; |
656 | struct object_id *this_result; | |
ff74f7f1 JH |
657 | int flag; |
658 | ||
cca5fa64 | 659 | this_result = refs_found ? &oid_from_ref : oid; |
6cd4a898 JK |
660 | strbuf_reset(&fullref); |
661 | strbuf_addf(&fullref, *p, len, str); | |
0b1dbf53 NTND |
662 | r = refs_resolve_ref_unsafe(get_main_ref_store(repo), |
663 | fullref.buf, RESOLVE_REF_READING, | |
664 | this_result, &flag); | |
ff74f7f1 JH |
665 | if (r) { |
666 | if (!refs_found++) | |
667 | *ref = xstrdup(r); | |
668 | if (!warn_ambiguous_refs) | |
669 | break; | |
6cd4a898 | 670 | } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) { |
661558f0 | 671 | warning(_("ignoring dangling symref %s"), fullref.buf); |
6cd4a898 | 672 | } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) { |
661558f0 | 673 | warning(_("ignoring broken ref %s"), fullref.buf); |
55956350 | 674 | } |
ff74f7f1 | 675 | } |
6cd4a898 | 676 | strbuf_release(&fullref); |
ff74f7f1 JH |
677 | return refs_found; |
678 | } | |
679 | ||
56700903 NTND |
680 | int repo_dwim_log(struct repository *r, const char *str, int len, |
681 | struct object_id *oid, char **log) | |
ff74f7f1 | 682 | { |
56700903 | 683 | struct ref_store *refs = get_main_ref_store(r); |
f24c30e0 | 684 | char *last_branch = substitute_branch_name(r, &str, &len, 0); |
ff74f7f1 JH |
685 | const char **p; |
686 | int logs_found = 0; | |
6cd4a898 | 687 | struct strbuf path = STRBUF_INIT; |
ff74f7f1 JH |
688 | |
689 | *log = NULL; | |
690 | for (p = ref_rev_parse_rules; *p; p++) { | |
334dc52f | 691 | struct object_id hash; |
ff74f7f1 JH |
692 | const char *ref, *it; |
693 | ||
6cd4a898 JK |
694 | strbuf_reset(&path); |
695 | strbuf_addf(&path, *p, len, str); | |
56700903 NTND |
696 | ref = refs_resolve_ref_unsafe(refs, path.buf, |
697 | RESOLVE_REF_READING, | |
6f45ec88 | 698 | oid ? &hash : NULL, NULL); |
ff74f7f1 JH |
699 | if (!ref) |
700 | continue; | |
56700903 | 701 | if (refs_reflog_exists(refs, path.buf)) |
6cd4a898 | 702 | it = path.buf; |
56700903 NTND |
703 | else if (strcmp(ref, path.buf) && |
704 | refs_reflog_exists(refs, ref)) | |
ff74f7f1 JH |
705 | it = ref; |
706 | else | |
707 | continue; | |
708 | if (!logs_found++) { | |
709 | *log = xstrdup(it); | |
6f45ec88 ÆAB |
710 | if (oid) |
711 | oidcpy(oid, &hash); | |
ff74f7f1 | 712 | } |
7bd9bcf3 MH |
713 | if (!warn_ambiguous_refs) |
714 | break; | |
c0277d15 | 715 | } |
6cd4a898 | 716 | strbuf_release(&path); |
7bd9bcf3 MH |
717 | free(last_branch); |
718 | return logs_found; | |
2ddb5d17 BK |
719 | } |
720 | ||
56700903 NTND |
721 | int dwim_log(const char *str, int len, struct object_id *oid, char **log) |
722 | { | |
723 | return repo_dwim_log(the_repository, str, len, oid, log); | |
724 | } | |
725 | ||
266b1827 DT |
726 | static int is_per_worktree_ref(const char *refname) |
727 | { | |
55dd8b91 HWN |
728 | return starts_with(refname, "refs/worktree/") || |
729 | starts_with(refname, "refs/bisect/") || | |
730 | starts_with(refname, "refs/rewritten/"); | |
266b1827 DT |
731 | } |
732 | ||
733 | static int is_pseudoref_syntax(const char *refname) | |
734 | { | |
735 | const char *c; | |
736 | ||
737 | for (c = refname; *c; c++) { | |
738 | if (!isupper(*c) && *c != '-' && *c != '_') | |
739 | return 0; | |
740 | } | |
741 | ||
742 | return 1; | |
743 | } | |
744 | ||
3a3b9d8c NTND |
745 | static int is_main_pseudoref_syntax(const char *refname) |
746 | { | |
747 | return skip_prefix(refname, "main-worktree/", &refname) && | |
748 | *refname && | |
749 | is_pseudoref_syntax(refname); | |
750 | } | |
751 | ||
752 | static int is_other_pseudoref_syntax(const char *refname) | |
753 | { | |
754 | if (!skip_prefix(refname, "worktrees/", &refname)) | |
755 | return 0; | |
756 | refname = strchr(refname, '/'); | |
757 | if (!refname || !refname[1]) | |
758 | return 0; | |
759 | return is_pseudoref_syntax(refname + 1); | |
760 | } | |
761 | ||
266b1827 DT |
762 | enum ref_type ref_type(const char *refname) |
763 | { | |
764 | if (is_per_worktree_ref(refname)) | |
765 | return REF_TYPE_PER_WORKTREE; | |
766 | if (is_pseudoref_syntax(refname)) | |
767 | return REF_TYPE_PSEUDOREF; | |
3a3b9d8c NTND |
768 | if (is_main_pseudoref_syntax(refname)) |
769 | return REF_TYPE_MAIN_PSEUDOREF; | |
770 | if (is_other_pseudoref_syntax(refname)) | |
771 | return REF_TYPE_OTHER_PSEUDOREF; | |
5c79f74f | 772 | return REF_TYPE_NORMAL; |
266b1827 DT |
773 | } |
774 | ||
4ff0f01c MH |
775 | long get_files_ref_lock_timeout_ms(void) |
776 | { | |
777 | static int configured = 0; | |
778 | ||
779 | /* The default timeout is 100 ms: */ | |
780 | static int timeout_ms = 100; | |
781 | ||
782 | if (!configured) { | |
783 | git_config_get_int("core.filesreflocktimeout", &timeout_ms); | |
784 | configured = 1; | |
785 | } | |
786 | ||
787 | return timeout_ms; | |
788 | } | |
789 | ||
c0fe4e8b NTND |
790 | int refs_delete_ref(struct ref_store *refs, const char *msg, |
791 | const char *refname, | |
2616a5e5 | 792 | const struct object_id *old_oid, |
c0fe4e8b | 793 | unsigned int flags) |
41b625b0 | 794 | { |
7521cc46 | 795 | struct ref_transaction *transaction; |
a4c653df | 796 | struct strbuf err = STRBUF_INIT; |
8b5157e4 | 797 | |
c0fe4e8b | 798 | transaction = ref_store_transaction_begin(refs, &err); |
7521cc46 | 799 | if (!transaction || |
89f3bbdd | 800 | ref_transaction_delete(transaction, refname, old_oid, |
755b49ae | 801 | flags, msg, &err) || |
db7516ab | 802 | ref_transaction_commit(transaction, &err)) { |
7521cc46 RS |
803 | error("%s", err.buf); |
804 | ref_transaction_free(transaction); | |
805 | strbuf_release(&err); | |
c0277d15 | 806 | return 1; |
41b625b0 | 807 | } |
7bd9bcf3 MH |
808 | ref_transaction_free(transaction); |
809 | strbuf_release(&err); | |
b531394d BC |
810 | return 0; |
811 | } | |
41b625b0 | 812 | |
c0fe4e8b | 813 | int delete_ref(const char *msg, const char *refname, |
2616a5e5 | 814 | const struct object_id *old_oid, unsigned int flags) |
c0fe4e8b | 815 | { |
23a3f0cb | 816 | return refs_delete_ref(get_main_ref_store(the_repository), msg, refname, |
2616a5e5 | 817 | old_oid, flags); |
c0fe4e8b NTND |
818 | } |
819 | ||
523fa69c | 820 | static void copy_reflog_msg(struct strbuf *sb, const char *msg) |
0ec29a47 | 821 | { |
0ec29a47 JH |
822 | char c; |
823 | int wasspace = 1; | |
8b5157e4 | 824 | |
0ec29a47 JH |
825 | while ((c = *msg++)) { |
826 | if (wasspace && isspace(c)) | |
827 | continue; | |
828 | wasspace = isspace(c); | |
829 | if (wasspace) | |
830 | c = ' '; | |
80a6c207 | 831 | strbuf_addch(sb, c); |
a4c653df | 832 | } |
80a6c207 | 833 | strbuf_rtrim(sb); |
0ec29a47 | 834 | } |
8b5157e4 | 835 | |
523fa69c JH |
836 | static char *normalize_reflog_message(const char *msg) |
837 | { | |
838 | struct strbuf sb = STRBUF_INIT; | |
839 | ||
840 | if (msg && *msg) | |
841 | copy_reflog_msg(&sb, msg); | |
842 | return strbuf_detach(&sb, NULL); | |
843 | } | |
844 | ||
4cb77009 | 845 | int should_autocreate_reflog(const char *refname) |
4e2bef57 | 846 | { |
341fb286 CW |
847 | switch (log_all_ref_updates) { |
848 | case LOG_REFS_ALWAYS: | |
849 | return 1; | |
850 | case LOG_REFS_NORMAL: | |
851 | return starts_with(refname, "refs/heads/") || | |
852 | starts_with(refname, "refs/remotes/") || | |
853 | starts_with(refname, "refs/notes/") || | |
854 | !strcmp(refname, "HEAD"); | |
855 | default: | |
4e2bef57 | 856 | return 0; |
341fb286 | 857 | } |
4e2bef57 DT |
858 | } |
859 | ||
e7e0f26e | 860 | int is_branch(const char *refname) |
c3b0dec5 | 861 | { |
59556548 | 862 | return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/"); |
41b625b0 NP |
863 | } |
864 | ||
4207ed28 RS |
865 | struct read_ref_at_cb { |
866 | const char *refname; | |
dddbad72 | 867 | timestamp_t at_time; |
4207ed28 RS |
868 | int cnt; |
869 | int reccnt; | |
8eb36d94 | 870 | struct object_id *oid; |
4207ed28 RS |
871 | int found_it; |
872 | ||
8eb36d94 | 873 | struct object_id ooid; |
874 | struct object_id noid; | |
4207ed28 | 875 | int tz; |
dddbad72 | 876 | timestamp_t date; |
4207ed28 | 877 | char **msg; |
dddbad72 | 878 | timestamp_t *cutoff_time; |
4207ed28 RS |
879 | int *cutoff_tz; |
880 | int *cutoff_cnt; | |
881 | }; | |
882 | ||
95c2a718 DL |
883 | static void set_read_ref_cutoffs(struct read_ref_at_cb *cb, |
884 | timestamp_t timestamp, int tz, const char *message) | |
885 | { | |
886 | if (cb->msg) | |
887 | *cb->msg = xstrdup(message); | |
888 | if (cb->cutoff_time) | |
889 | *cb->cutoff_time = timestamp; | |
890 | if (cb->cutoff_tz) | |
891 | *cb->cutoff_tz = tz; | |
892 | if (cb->cutoff_cnt) | |
893 | *cb->cutoff_cnt = cb->reccnt; | |
894 | } | |
895 | ||
9461d272 | 896 | static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 897 | const char *email, timestamp_t timestamp, int tz, |
4207ed28 RS |
898 | const char *message, void *cb_data) |
899 | { | |
900 | struct read_ref_at_cb *cb = cb_data; | |
6436a202 | 901 | int reached_count; |
4207ed28 | 902 | |
4207ed28 RS |
903 | cb->tz = tz; |
904 | cb->date = timestamp; | |
905 | ||
6436a202 DL |
906 | /* |
907 | * It is not possible for cb->cnt == 0 on the first iteration because | |
908 | * that special case is handled in read_ref_at(). | |
909 | */ | |
910 | if (cb->cnt > 0) | |
911 | cb->cnt--; | |
912 | reached_count = cb->cnt == 0 && !is_null_oid(ooid); | |
913 | if (timestamp <= cb->at_time || reached_count) { | |
95c2a718 | 914 | set_read_ref_cutoffs(cb, timestamp, tz, message); |
4207ed28 | 915 | /* |
78fb4579 | 916 | * we have not yet updated cb->[n|o]oid so they still |
4207ed28 RS |
917 | * hold the values for the previous record. |
918 | */ | |
6436a202 DL |
919 | if (!is_null_oid(&cb->ooid) && !oideq(&cb->ooid, noid)) |
920 | warning(_("log for ref %s has gap after %s"), | |
a5481a6c | 921 | cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822))); |
6436a202 DL |
922 | if (reached_count) |
923 | oidcpy(cb->oid, ooid); | |
924 | else if (!is_null_oid(&cb->ooid) || cb->date == cb->at_time) | |
8eb36d94 | 925 | oidcpy(cb->oid, noid); |
9001dc2a | 926 | else if (!oideq(noid, cb->oid)) |
661558f0 | 927 | warning(_("log for ref %s unexpectedly ended on %s"), |
4207ed28 | 928 | cb->refname, show_date(cb->date, cb->tz, |
a5481a6c | 929 | DATE_MODE(RFC2822))); |
4207ed28 | 930 | cb->found_it = 1; |
4207ed28 | 931 | } |
95c2a718 | 932 | cb->reccnt++; |
8eb36d94 | 933 | oidcpy(&cb->ooid, ooid); |
934 | oidcpy(&cb->noid, noid); | |
6436a202 DL |
935 | return cb->found_it; |
936 | } | |
937 | ||
938 | static int read_ref_at_ent_newest(struct object_id *ooid, struct object_id *noid, | |
939 | const char *email, timestamp_t timestamp, | |
940 | int tz, const char *message, void *cb_data) | |
941 | { | |
942 | struct read_ref_at_cb *cb = cb_data; | |
943 | ||
944 | set_read_ref_cutoffs(cb, timestamp, tz, message); | |
945 | oidcpy(cb->oid, noid); | |
946 | /* We just want the first entry */ | |
947 | return 1; | |
4207ed28 RS |
948 | } |
949 | ||
9461d272 | 950 | static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 951 | const char *email, timestamp_t timestamp, |
4207ed28 RS |
952 | int tz, const char *message, void *cb_data) |
953 | { | |
954 | struct read_ref_at_cb *cb = cb_data; | |
955 | ||
95c2a718 | 956 | set_read_ref_cutoffs(cb, timestamp, tz, message); |
8eb36d94 | 957 | oidcpy(cb->oid, ooid); |
958 | if (is_null_oid(cb->oid)) | |
959 | oidcpy(cb->oid, noid); | |
4207ed28 RS |
960 | /* We just want the first entry */ |
961 | return 1; | |
16d7cc90 JH |
962 | } |
963 | ||
7fdff474 NTND |
964 | int read_ref_at(struct ref_store *refs, const char *refname, |
965 | unsigned int flags, timestamp_t at_time, int cnt, | |
8eb36d94 | 966 | struct object_id *oid, char **msg, |
dddbad72 | 967 | timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt) |
d556fae2 | 968 | { |
4207ed28 | 969 | struct read_ref_at_cb cb; |
d556fae2 | 970 | |
4207ed28 RS |
971 | memset(&cb, 0, sizeof(cb)); |
972 | cb.refname = refname; | |
973 | cb.at_time = at_time; | |
974 | cb.cnt = cnt; | |
975 | cb.msg = msg; | |
976 | cb.cutoff_time = cutoff_time; | |
977 | cb.cutoff_tz = cutoff_tz; | |
978 | cb.cutoff_cnt = cutoff_cnt; | |
8eb36d94 | 979 | cb.oid = oid; |
4207ed28 | 980 | |
6436a202 DL |
981 | if (cb.cnt == 0) { |
982 | refs_for_each_reflog_ent_reverse(refs, refname, read_ref_at_ent_newest, &cb); | |
983 | return 0; | |
984 | } | |
985 | ||
7fdff474 | 986 | refs_for_each_reflog_ent_reverse(refs, refname, read_ref_at_ent, &cb); |
4207ed28 | 987 | |
c41a87dd | 988 | if (!cb.reccnt) { |
321c89bf | 989 | if (flags & GET_OID_QUIETLY) |
c41a87dd DA |
990 | exit(128); |
991 | else | |
661558f0 | 992 | die(_("log for %s is empty"), refname); |
c41a87dd | 993 | } |
4207ed28 RS |
994 | if (cb.found_it) |
995 | return 0; | |
996 | ||
7fdff474 | 997 | refs_for_each_reflog_ent(refs, refname, read_ref_at_ent_oldest, &cb); |
d556fae2 | 998 | |
16d7cc90 | 999 | return 1; |
d556fae2 | 1000 | } |
2ff81662 | 1001 | |
c0fe4e8b NTND |
1002 | struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs, |
1003 | struct strbuf *err) | |
caa4046c | 1004 | { |
c0fe4e8b | 1005 | struct ref_transaction *tr; |
5a603b04 JN |
1006 | assert(err); |
1007 | ||
ca56dadb | 1008 | CALLOC_ARRAY(tr, 1); |
c0fe4e8b NTND |
1009 | tr->ref_store = refs; |
1010 | return tr; | |
1011 | } | |
1012 | ||
1013 | struct ref_transaction *ref_transaction_begin(struct strbuf *err) | |
1014 | { | |
23a3f0cb | 1015 | return ref_store_transaction_begin(get_main_ref_store(the_repository), err); |
caa4046c MH |
1016 | } |
1017 | ||
026bd1d3 | 1018 | void ref_transaction_free(struct ref_transaction *transaction) |
caa4046c | 1019 | { |
43a2dfde | 1020 | size_t i; |
caa4046c | 1021 | |
1b07255c RS |
1022 | if (!transaction) |
1023 | return; | |
1024 | ||
30173b88 MH |
1025 | switch (transaction->state) { |
1026 | case REF_TRANSACTION_OPEN: | |
1027 | case REF_TRANSACTION_CLOSED: | |
1028 | /* OK */ | |
1029 | break; | |
1030 | case REF_TRANSACTION_PREPARED: | |
033abf97 | 1031 | BUG("free called on a prepared reference transaction"); |
30173b88 MH |
1032 | break; |
1033 | default: | |
033abf97 | 1034 | BUG("unexpected reference transaction state"); |
30173b88 MH |
1035 | break; |
1036 | } | |
1037 | ||
db7516ab RS |
1038 | for (i = 0; i < transaction->nr; i++) { |
1039 | free(transaction->updates[i]->msg); | |
88615910 | 1040 | free(transaction->updates[i]); |
db7516ab | 1041 | } |
caa4046c MH |
1042 | free(transaction->updates); |
1043 | free(transaction); | |
1044 | } | |
1045 | ||
71564516 MH |
1046 | struct ref_update *ref_transaction_add_update( |
1047 | struct ref_transaction *transaction, | |
1048 | const char *refname, unsigned int flags, | |
89f3bbdd | 1049 | const struct object_id *new_oid, |
1050 | const struct object_id *old_oid, | |
71564516 | 1051 | const char *msg) |
caa4046c | 1052 | { |
96ffc06f | 1053 | struct ref_update *update; |
71564516 MH |
1054 | |
1055 | if (transaction->state != REF_TRANSACTION_OPEN) | |
033abf97 | 1056 | BUG("update called for transaction that is not open"); |
71564516 | 1057 | |
96ffc06f | 1058 | FLEX_ALLOC_STR(update, refname, refname); |
caa4046c MH |
1059 | ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc); |
1060 | transaction->updates[transaction->nr++] = update; | |
71564516 MH |
1061 | |
1062 | update->flags = flags; | |
1063 | ||
1064 | if (flags & REF_HAVE_NEW) | |
89f3bbdd | 1065 | oidcpy(&update->new_oid, new_oid); |
71564516 | 1066 | if (flags & REF_HAVE_OLD) |
89f3bbdd | 1067 | oidcpy(&update->old_oid, old_oid); |
523fa69c | 1068 | update->msg = normalize_reflog_message(msg); |
caa4046c MH |
1069 | return update; |
1070 | } | |
1071 | ||
8e34800e RS |
1072 | int ref_transaction_update(struct ref_transaction *transaction, |
1073 | const char *refname, | |
89f3bbdd | 1074 | const struct object_id *new_oid, |
1075 | const struct object_id *old_oid, | |
1d147bdf | 1076 | unsigned int flags, const char *msg, |
8e34800e | 1077 | struct strbuf *err) |
caa4046c | 1078 | { |
5a603b04 JN |
1079 | assert(err); |
1080 | ||
89f3bbdd | 1081 | if ((new_oid && !is_null_oid(new_oid)) ? |
8a679de6 MH |
1082 | check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) : |
1083 | !refname_is_safe(refname)) { | |
661558f0 | 1084 | strbuf_addf(err, _("refusing to update ref with bad name '%s'"), |
d0f810f0 RS |
1085 | refname); |
1086 | return -1; | |
1087 | } | |
1088 | ||
a9bbbcec MH |
1089 | if (flags & ~REF_TRANSACTION_UPDATE_ALLOWED_FLAGS) |
1090 | BUG("illegal flags 0x%x passed to ref_transaction_update()", flags); | |
c788c54c | 1091 | |
89f3bbdd | 1092 | flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0); |
71564516 MH |
1093 | |
1094 | ref_transaction_add_update(transaction, refname, flags, | |
89f3bbdd | 1095 | new_oid, old_oid, msg); |
8e34800e | 1096 | return 0; |
caa4046c MH |
1097 | } |
1098 | ||
b416af5b RS |
1099 | int ref_transaction_create(struct ref_transaction *transaction, |
1100 | const char *refname, | |
89f3bbdd | 1101 | const struct object_id *new_oid, |
fec14ec3 | 1102 | unsigned int flags, const char *msg, |
b416af5b | 1103 | struct strbuf *err) |
caa4046c | 1104 | { |
89f3bbdd | 1105 | if (!new_oid || is_null_oid(new_oid)) |
033abf97 | 1106 | BUG("create called without valid new_oid"); |
89f3bbdd | 1107 | return ref_transaction_update(transaction, refname, new_oid, |
14228447 | 1108 | null_oid(), flags, msg, err); |
caa4046c MH |
1109 | } |
1110 | ||
8c8bdc0d RS |
1111 | int ref_transaction_delete(struct ref_transaction *transaction, |
1112 | const char *refname, | |
89f3bbdd | 1113 | const struct object_id *old_oid, |
fb5a6bb6 | 1114 | unsigned int flags, const char *msg, |
8c8bdc0d | 1115 | struct strbuf *err) |
caa4046c | 1116 | { |
89f3bbdd | 1117 | if (old_oid && is_null_oid(old_oid)) |
033abf97 | 1118 | BUG("delete called with old_oid set to zeros"); |
1d147bdf | 1119 | return ref_transaction_update(transaction, refname, |
14228447 | 1120 | null_oid(), old_oid, |
1d147bdf | 1121 | flags, msg, err); |
caa4046c MH |
1122 | } |
1123 | ||
16180334 MH |
1124 | int ref_transaction_verify(struct ref_transaction *transaction, |
1125 | const char *refname, | |
89f3bbdd | 1126 | const struct object_id *old_oid, |
16180334 MH |
1127 | unsigned int flags, |
1128 | struct strbuf *err) | |
1129 | { | |
89f3bbdd | 1130 | if (!old_oid) |
033abf97 | 1131 | BUG("verify called with old_oid set to NULL"); |
16180334 | 1132 | return ref_transaction_update(transaction, refname, |
89f3bbdd | 1133 | NULL, old_oid, |
16180334 MH |
1134 | flags, NULL, err); |
1135 | } | |
1136 | ||
c0fe4e8b | 1137 | int refs_update_ref(struct ref_store *refs, const char *msg, |
ae077771 | 1138 | const char *refname, const struct object_id *new_oid, |
1139 | const struct object_id *old_oid, unsigned int flags, | |
c0fe4e8b | 1140 | enum action_on_err onerr) |
4738a333 | 1141 | { |
74ec19d4 | 1142 | struct ref_transaction *t = NULL; |
b4d75ac1 | 1143 | struct strbuf err = STRBUF_INIT; |
74ec19d4 | 1144 | int ret = 0; |
b4d75ac1 | 1145 | |
09743417 HWN |
1146 | t = ref_store_transaction_begin(refs, &err); |
1147 | if (!t || | |
1148 | ref_transaction_update(t, refname, new_oid, old_oid, flags, msg, | |
1149 | &err) || | |
1150 | ref_transaction_commit(t, &err)) { | |
1151 | ret = 1; | |
1152 | ref_transaction_free(t); | |
74ec19d4 DT |
1153 | } |
1154 | if (ret) { | |
661558f0 | 1155 | const char *str = _("update_ref failed for ref '%s': %s"); |
b4d75ac1 | 1156 | |
b4d75ac1 RS |
1157 | switch (onerr) { |
1158 | case UPDATE_REFS_MSG_ON_ERR: | |
1159 | error(str, refname, err.buf); | |
1160 | break; | |
1161 | case UPDATE_REFS_DIE_ON_ERR: | |
1162 | die(str, refname, err.buf); | |
1163 | break; | |
1164 | case UPDATE_REFS_QUIET_ON_ERR: | |
1165 | break; | |
1166 | } | |
1167 | strbuf_release(&err); | |
4738a333 | 1168 | return 1; |
b4d75ac1 RS |
1169 | } |
1170 | strbuf_release(&err); | |
74ec19d4 DT |
1171 | if (t) |
1172 | ref_transaction_free(t); | |
b4d75ac1 | 1173 | return 0; |
4738a333 BK |
1174 | } |
1175 | ||
c0fe4e8b | 1176 | int update_ref(const char *msg, const char *refname, |
ae077771 | 1177 | const struct object_id *new_oid, |
1178 | const struct object_id *old_oid, | |
c0fe4e8b NTND |
1179 | unsigned int flags, enum action_on_err onerr) |
1180 | { | |
23a3f0cb | 1181 | return refs_update_ref(get_main_ref_store(the_repository), msg, refname, new_oid, |
ae077771 | 1182 | old_oid, flags, onerr); |
c0fe4e8b NTND |
1183 | } |
1184 | ||
546edf37 NTND |
1185 | char *refs_shorten_unambiguous_ref(struct ref_store *refs, |
1186 | const char *refname, int strict) | |
7c2b3029 JK |
1187 | { |
1188 | int i; | |
1189 | static char **scanf_fmts; | |
1190 | static int nr_rules; | |
1191 | char *short_name; | |
6cd4a898 | 1192 | struct strbuf resolved_buf = STRBUF_INIT; |
7c2b3029 | 1193 | |
7c2b3029 | 1194 | if (!nr_rules) { |
4346663a MH |
1195 | /* |
1196 | * Pre-generate scanf formats from ref_rev_parse_rules[]. | |
1197 | * Generate a format suitable for scanf from a | |
1198 | * ref_rev_parse_rules rule by interpolating "%s" at the | |
1199 | * location of the "%.*s". | |
1200 | */ | |
7c2b3029 | 1201 | size_t total_len = 0; |
84d5633f | 1202 | size_t offset = 0; |
7c2b3029 JK |
1203 | |
1204 | /* the rule list is NULL terminated, count them first */ | |
a4165851 | 1205 | for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++) |
7902fe03 MH |
1206 | /* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */ |
1207 | total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1; | |
7c2b3029 | 1208 | |
50492f7b | 1209 | scanf_fmts = xmalloc(st_add(st_mult(sizeof(char *), nr_rules), total_len)); |
7c2b3029 | 1210 | |
84d5633f | 1211 | offset = 0; |
7c2b3029 | 1212 | for (i = 0; i < nr_rules; i++) { |
4346663a | 1213 | assert(offset < total_len); |
84d5633f | 1214 | scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] + offset; |
bf4baf1f JK |
1215 | offset += xsnprintf(scanf_fmts[i], total_len - offset, |
1216 | ref_rev_parse_rules[i], 2, "%s") + 1; | |
7c2b3029 JK |
1217 | } |
1218 | } | |
1219 | ||
1220 | /* bail out if there are no rules */ | |
1221 | if (!nr_rules) | |
dfefa935 | 1222 | return xstrdup(refname); |
7c2b3029 | 1223 | |
dfefa935 MH |
1224 | /* buffer for scanf result, at most refname must fit */ |
1225 | short_name = xstrdup(refname); | |
7c2b3029 JK |
1226 | |
1227 | /* skip first rule, it will always match */ | |
1228 | for (i = nr_rules - 1; i > 0 ; --i) { | |
1229 | int j; | |
6e7b3309 | 1230 | int rules_to_fail = i; |
7c2b3029 JK |
1231 | int short_name_len; |
1232 | ||
dfefa935 | 1233 | if (1 != sscanf(refname, scanf_fmts[i], short_name)) |
7c2b3029 JK |
1234 | continue; |
1235 | ||
1236 | short_name_len = strlen(short_name); | |
1237 | ||
6e7b3309 BW |
1238 | /* |
1239 | * in strict mode, all (except the matched one) rules | |
1240 | * must fail to resolve to a valid non-ambiguous ref | |
1241 | */ | |
1242 | if (strict) | |
1243 | rules_to_fail = nr_rules; | |
1244 | ||
7c2b3029 JK |
1245 | /* |
1246 | * check if the short name resolves to a valid ref, | |
1247 | * but use only rules prior to the matched one | |
1248 | */ | |
6e7b3309 | 1249 | for (j = 0; j < rules_to_fail; j++) { |
7c2b3029 | 1250 | const char *rule = ref_rev_parse_rules[j]; |
7c2b3029 | 1251 | |
6e7b3309 BW |
1252 | /* skip matched rule */ |
1253 | if (i == j) | |
1254 | continue; | |
1255 | ||
7c2b3029 JK |
1256 | /* |
1257 | * the short name is ambiguous, if it resolves | |
1258 | * (with this previous rule) to a valid ref | |
1259 | * read_ref() returns 0 on success | |
1260 | */ | |
6cd4a898 JK |
1261 | strbuf_reset(&resolved_buf); |
1262 | strbuf_addf(&resolved_buf, rule, | |
1263 | short_name_len, short_name); | |
546edf37 | 1264 | if (refs_ref_exists(refs, resolved_buf.buf)) |
7c2b3029 JK |
1265 | break; |
1266 | } | |
1267 | ||
1268 | /* | |
1269 | * short name is non-ambiguous if all previous rules | |
1270 | * haven't resolved to a valid ref | |
1271 | */ | |
6cd4a898 JK |
1272 | if (j == rules_to_fail) { |
1273 | strbuf_release(&resolved_buf); | |
7c2b3029 | 1274 | return short_name; |
6cd4a898 | 1275 | } |
7c2b3029 JK |
1276 | } |
1277 | ||
6cd4a898 | 1278 | strbuf_release(&resolved_buf); |
7c2b3029 | 1279 | free(short_name); |
dfefa935 | 1280 | return xstrdup(refname); |
7c2b3029 | 1281 | } |
daebaa78 | 1282 | |
546edf37 NTND |
1283 | char *shorten_unambiguous_ref(const char *refname, int strict) |
1284 | { | |
1285 | return refs_shorten_unambiguous_ref(get_main_ref_store(the_repository), | |
1286 | refname, strict); | |
1287 | } | |
1288 | ||
daebaa78 JH |
1289 | static struct string_list *hide_refs; |
1290 | ||
1291 | int parse_hide_refs_config(const char *var, const char *value, const char *section) | |
1292 | { | |
ad8c7cda | 1293 | const char *key; |
daebaa78 | 1294 | if (!strcmp("transfer.hiderefs", var) || |
ad8c7cda JK |
1295 | (!parse_config_key(var, section, NULL, NULL, &key) && |
1296 | !strcmp(key, "hiderefs"))) { | |
daebaa78 JH |
1297 | char *ref; |
1298 | int len; | |
1299 | ||
1300 | if (!value) | |
1301 | return config_error_nonbool(var); | |
1302 | ref = xstrdup(value); | |
1303 | len = strlen(ref); | |
1304 | while (len && ref[len - 1] == '/') | |
1305 | ref[--len] = '\0'; | |
1306 | if (!hide_refs) { | |
ca56dadb | 1307 | CALLOC_ARRAY(hide_refs, 1); |
daebaa78 JH |
1308 | hide_refs->strdup_strings = 1; |
1309 | } | |
1310 | string_list_append(hide_refs, ref); | |
1311 | } | |
1312 | return 0; | |
1313 | } | |
1314 | ||
78a766ab | 1315 | int ref_is_hidden(const char *refname, const char *refname_full) |
daebaa78 | 1316 | { |
2bc31d16 | 1317 | int i; |
daebaa78 JH |
1318 | |
1319 | if (!hide_refs) | |
1320 | return 0; | |
2bc31d16 JK |
1321 | for (i = hide_refs->nr - 1; i >= 0; i--) { |
1322 | const char *match = hide_refs->items[i].string; | |
78a766ab | 1323 | const char *subject; |
2bc31d16 | 1324 | int neg = 0; |
7a40a95e | 1325 | const char *p; |
2bc31d16 JK |
1326 | |
1327 | if (*match == '!') { | |
1328 | neg = 1; | |
1329 | match++; | |
1330 | } | |
1331 | ||
78a766ab LF |
1332 | if (*match == '^') { |
1333 | subject = refname_full; | |
1334 | match++; | |
1335 | } else { | |
1336 | subject = refname; | |
1337 | } | |
1338 | ||
1339 | /* refname can be NULL when namespaces are used. */ | |
7a40a95e CC |
1340 | if (subject && |
1341 | skip_prefix(subject, match, &p) && | |
1342 | (!*p || *p == '/')) | |
2bc31d16 | 1343 | return !neg; |
daebaa78 JH |
1344 | } |
1345 | return 0; | |
1346 | } | |
fa5b1830 | 1347 | |
0845122c DT |
1348 | const char *find_descendant_ref(const char *dirname, |
1349 | const struct string_list *extras, | |
1350 | const struct string_list *skip) | |
fa5b1830 | 1351 | { |
0845122c | 1352 | int pos; |
fa5b1830 | 1353 | |
0845122c DT |
1354 | if (!extras) |
1355 | return NULL; | |
fa5b1830 MH |
1356 | |
1357 | /* | |
0845122c DT |
1358 | * Look at the place where dirname would be inserted into |
1359 | * extras. If there is an entry at that position that starts | |
1360 | * with dirname (remember, dirname includes the trailing | |
1361 | * slash) and is not in skip, then we have a conflict. | |
fa5b1830 | 1362 | */ |
0845122c DT |
1363 | for (pos = string_list_find_insert_index(extras, dirname, 0); |
1364 | pos < extras->nr; pos++) { | |
1365 | const char *extra_refname = extras->items[pos].string; | |
fa5b1830 | 1366 | |
0845122c DT |
1367 | if (!starts_with(extra_refname, dirname)) |
1368 | break; | |
1369 | ||
1370 | if (!skip || !string_list_has_string(skip, extra_refname)) | |
1371 | return extra_refname; | |
fa5b1830 | 1372 | } |
0845122c DT |
1373 | return NULL; |
1374 | } | |
fa5b1830 | 1375 | |
7d2df051 NTND |
1376 | int refs_rename_ref_available(struct ref_store *refs, |
1377 | const char *old_refname, | |
1378 | const char *new_refname) | |
0845122c DT |
1379 | { |
1380 | struct string_list skip = STRING_LIST_INIT_NODUP; | |
1381 | struct strbuf err = STRBUF_INIT; | |
ff3a299c | 1382 | int ok; |
fa5b1830 | 1383 | |
ff3a299c | 1384 | string_list_insert(&skip, old_refname); |
7d2df051 NTND |
1385 | ok = !refs_verify_refname_available(refs, new_refname, |
1386 | NULL, &skip, &err); | |
ff3a299c | 1387 | if (!ok) |
0845122c DT |
1388 | error("%s", err.buf); |
1389 | ||
1390 | string_list_clear(&skip, 0); | |
1391 | strbuf_release(&err); | |
ff3a299c | 1392 | return ok; |
fa5b1830 | 1393 | } |
2bf68ed5 | 1394 | |
62f0b399 | 1395 | int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
2bf68ed5 DT |
1396 | { |
1397 | struct object_id oid; | |
1398 | int flag; | |
1399 | ||
62f0b399 | 1400 | if (!refs_read_ref_full(refs, "HEAD", RESOLVE_REF_READING, |
34c290a6 | 1401 | &oid, &flag)) |
2bf68ed5 DT |
1402 | return fn("HEAD", &oid, flag, cb_data); |
1403 | ||
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | int head_ref(each_ref_fn fn, void *cb_data) | |
1408 | { | |
23a3f0cb | 1409 | return refs_head_ref(get_main_ref_store(the_repository), fn, cb_data); |
2bf68ed5 | 1410 | } |
93770590 | 1411 | |
e121b9cb MH |
1412 | struct ref_iterator *refs_ref_iterator_begin( |
1413 | struct ref_store *refs, | |
9aab952e JK |
1414 | const char *prefix, int trim, |
1415 | enum do_for_each_ref_flags flags) | |
e121b9cb MH |
1416 | { |
1417 | struct ref_iterator *iter; | |
1418 | ||
6d751be4 | 1419 | if (!(flags & DO_FOR_EACH_INCLUDE_BROKEN)) { |
5d1f5b8c JK |
1420 | static int ref_paranoia = -1; |
1421 | ||
6d751be4 | 1422 | if (ref_paranoia < 0) |
968f12fd | 1423 | ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 1); |
6d751be4 JK |
1424 | if (ref_paranoia) { |
1425 | flags |= DO_FOR_EACH_INCLUDE_BROKEN; | |
1426 | flags |= DO_FOR_EACH_OMIT_DANGLING_SYMREFS; | |
1427 | } | |
1428 | } | |
0a0865b8 | 1429 | |
e121b9cb | 1430 | iter = refs->be->iterator_begin(refs, prefix, flags); |
c7599718 MH |
1431 | |
1432 | /* | |
1433 | * `iterator_begin()` already takes care of prefix, but we | |
1434 | * might need to do some trimming: | |
1435 | */ | |
1436 | if (trim) | |
1437 | iter = prefix_ref_iterator_begin(iter, "", trim); | |
e121b9cb | 1438 | |
8738a8a4 MH |
1439 | /* Sanity check for subclasses: */ |
1440 | if (!iter->ordered) | |
1441 | BUG("reference iterator is not ordered"); | |
1442 | ||
e121b9cb MH |
1443 | return iter; |
1444 | } | |
1445 | ||
4c4de895 MH |
1446 | /* |
1447 | * Call fn for each reference in the specified submodule for which the | |
1448 | * refname begins with prefix. If trim is non-zero, then trim that | |
1449 | * many characters off the beginning of each refname before passing | |
1450 | * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to | |
1451 | * include broken references in the iteration. If fn ever returns a | |
1452 | * non-zero value, stop the iteration and return that value; | |
1453 | * otherwise, return 0. | |
1454 | */ | |
4a6067cd SB |
1455 | static int do_for_each_repo_ref(struct repository *r, const char *prefix, |
1456 | each_repo_ref_fn fn, int trim, int flags, | |
1457 | void *cb_data) | |
1458 | { | |
1459 | struct ref_iterator *iter; | |
1460 | struct ref_store *refs = get_main_ref_store(r); | |
1461 | ||
1462 | if (!refs) | |
1463 | return 0; | |
1464 | ||
1465 | iter = refs_ref_iterator_begin(refs, prefix, trim, flags); | |
1466 | ||
1467 | return do_for_each_repo_ref_iterator(r, iter, fn, cb_data); | |
1468 | } | |
1469 | ||
1470 | struct do_for_each_ref_help { | |
1471 | each_ref_fn *fn; | |
1472 | void *cb_data; | |
1473 | }; | |
1474 | ||
1475 | static int do_for_each_ref_helper(struct repository *r, | |
1476 | const char *refname, | |
1477 | const struct object_id *oid, | |
1478 | int flags, | |
1479 | void *cb_data) | |
1480 | { | |
1481 | struct do_for_each_ref_help *hp = cb_data; | |
1482 | ||
1483 | return hp->fn(refname, oid, flags, hp->cb_data); | |
1484 | } | |
1485 | ||
7d2df051 | 1486 | static int do_for_each_ref(struct ref_store *refs, const char *prefix, |
9aab952e JK |
1487 | each_ref_fn fn, int trim, |
1488 | enum do_for_each_ref_flags flags, void *cb_data) | |
4c4de895 MH |
1489 | { |
1490 | struct ref_iterator *iter; | |
4a6067cd | 1491 | struct do_for_each_ref_help hp = { fn, cb_data }; |
4c4de895 | 1492 | |
00eebe35 MH |
1493 | if (!refs) |
1494 | return 0; | |
1495 | ||
e121b9cb | 1496 | iter = refs_ref_iterator_begin(refs, prefix, trim, flags); |
4c4de895 | 1497 | |
4a6067cd SB |
1498 | return do_for_each_repo_ref_iterator(the_repository, iter, |
1499 | do_for_each_ref_helper, &hp); | |
4c4de895 MH |
1500 | } |
1501 | ||
7d2df051 NTND |
1502 | int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
1503 | { | |
1504 | return do_for_each_ref(refs, "", fn, 0, 0, cb_data); | |
1505 | } | |
1506 | ||
93770590 DT |
1507 | int for_each_ref(each_ref_fn fn, void *cb_data) |
1508 | { | |
23a3f0cb | 1509 | return refs_for_each_ref(get_main_ref_store(the_repository), fn, cb_data); |
93770590 DT |
1510 | } |
1511 | ||
7d2df051 NTND |
1512 | int refs_for_each_ref_in(struct ref_store *refs, const char *prefix, |
1513 | each_ref_fn fn, void *cb_data) | |
1514 | { | |
1515 | return do_for_each_ref(refs, prefix, fn, strlen(prefix), 0, cb_data); | |
93770590 DT |
1516 | } |
1517 | ||
1518 | int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data) | |
1519 | { | |
23a3f0cb | 1520 | return refs_for_each_ref_in(get_main_ref_store(the_repository), prefix, fn, cb_data); |
93770590 DT |
1521 | } |
1522 | ||
67985e4e | 1523 | int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data) |
93770590 | 1524 | { |
23a3f0cb | 1525 | return do_for_each_ref(get_main_ref_store(the_repository), |
67985e4e | 1526 | prefix, fn, 0, 0, cb_data); |
93770590 DT |
1527 | } |
1528 | ||
073cf63c | 1529 | int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix, |
67985e4e | 1530 | each_ref_fn fn, void *cb_data) |
03df567f | 1531 | { |
67985e4e | 1532 | return do_for_each_ref(refs, prefix, fn, 0, 0, cb_data); |
03df567f MH |
1533 | } |
1534 | ||
212e0f7e | 1535 | int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data) |
93770590 | 1536 | { |
212e0f7e SB |
1537 | return do_for_each_repo_ref(r, git_replace_ref_base, fn, |
1538 | strlen(git_replace_ref_base), | |
1539 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); | |
93770590 DT |
1540 | } |
1541 | ||
1542 | int for_each_namespaced_ref(each_ref_fn fn, void *cb_data) | |
1543 | { | |
1544 | struct strbuf buf = STRBUF_INIT; | |
1545 | int ret; | |
1546 | strbuf_addf(&buf, "%srefs/", get_git_namespace()); | |
23a3f0cb | 1547 | ret = do_for_each_ref(get_main_ref_store(the_repository), |
7d2df051 | 1548 | buf.buf, fn, 0, 0, cb_data); |
93770590 DT |
1549 | strbuf_release(&buf); |
1550 | return ret; | |
1551 | } | |
1552 | ||
7d2df051 | 1553 | int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
93770590 | 1554 | { |
7d2df051 | 1555 | return do_for_each_ref(refs, "", fn, 0, |
93770590 DT |
1556 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); |
1557 | } | |
2d0663b2 | 1558 | |
7d2df051 NTND |
1559 | int for_each_rawref(each_ref_fn fn, void *cb_data) |
1560 | { | |
23a3f0cb | 1561 | return refs_for_each_rawref(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 NTND |
1562 | } |
1563 | ||
16b1985b TB |
1564 | static int qsort_strcmp(const void *va, const void *vb) |
1565 | { | |
1566 | const char *a = *(const char **)va; | |
1567 | const char *b = *(const char **)vb; | |
1568 | ||
1569 | return strcmp(a, b); | |
1570 | } | |
1571 | ||
1572 | static void find_longest_prefixes_1(struct string_list *out, | |
1573 | struct strbuf *prefix, | |
1574 | const char **patterns, size_t nr) | |
1575 | { | |
1576 | size_t i; | |
1577 | ||
1578 | for (i = 0; i < nr; i++) { | |
1579 | char c = patterns[i][prefix->len]; | |
1580 | if (!c || is_glob_special(c)) { | |
1581 | string_list_append(out, prefix->buf); | |
1582 | return; | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | i = 0; | |
1587 | while (i < nr) { | |
1588 | size_t end; | |
1589 | ||
1590 | /* | |
1591 | * Set "end" to the index of the element _after_ the last one | |
1592 | * in our group. | |
1593 | */ | |
1594 | for (end = i + 1; end < nr; end++) { | |
1595 | if (patterns[i][prefix->len] != patterns[end][prefix->len]) | |
1596 | break; | |
1597 | } | |
1598 | ||
1599 | strbuf_addch(prefix, patterns[i][prefix->len]); | |
1600 | find_longest_prefixes_1(out, prefix, patterns + i, end - i); | |
1601 | strbuf_setlen(prefix, prefix->len - 1); | |
1602 | ||
1603 | i = end; | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | static void find_longest_prefixes(struct string_list *out, | |
1608 | const char **patterns) | |
1609 | { | |
1610 | struct strvec sorted = STRVEC_INIT; | |
1611 | struct strbuf prefix = STRBUF_INIT; | |
1612 | ||
1613 | strvec_pushv(&sorted, patterns); | |
1614 | QSORT(sorted.v, sorted.nr, qsort_strcmp); | |
1615 | ||
1616 | find_longest_prefixes_1(out, &prefix, sorted.v, sorted.nr); | |
1617 | ||
1618 | strvec_clear(&sorted); | |
1619 | strbuf_release(&prefix); | |
1620 | } | |
1621 | ||
1622 | int for_each_fullref_in_prefixes(const char *namespace, | |
1623 | const char **patterns, | |
67985e4e | 1624 | each_ref_fn fn, void *cb_data) |
16b1985b TB |
1625 | { |
1626 | struct string_list prefixes = STRING_LIST_INIT_DUP; | |
1627 | struct string_list_item *prefix; | |
1628 | struct strbuf buf = STRBUF_INIT; | |
1629 | int ret = 0, namespace_len; | |
1630 | ||
1631 | find_longest_prefixes(&prefixes, patterns); | |
1632 | ||
1633 | if (namespace) | |
1634 | strbuf_addstr(&buf, namespace); | |
1635 | namespace_len = buf.len; | |
1636 | ||
1637 | for_each_string_list_item(prefix, &prefixes) { | |
1638 | strbuf_addstr(&buf, prefix->string); | |
67985e4e | 1639 | ret = for_each_fullref_in(buf.buf, fn, cb_data); |
16b1985b TB |
1640 | if (ret) |
1641 | break; | |
1642 | strbuf_setlen(&buf, namespace_len); | |
1643 | } | |
1644 | ||
1645 | string_list_clear(&prefixes, 0); | |
1646 | strbuf_release(&buf); | |
1647 | return ret; | |
1648 | } | |
1649 | ||
e8115302 HWN |
1650 | static int refs_read_special_head(struct ref_store *ref_store, |
1651 | const char *refname, struct object_id *oid, | |
1652 | struct strbuf *referent, unsigned int *type) | |
1653 | { | |
1654 | struct strbuf full_path = STRBUF_INIT; | |
1655 | struct strbuf content = STRBUF_INIT; | |
1656 | int result = -1; | |
1657 | strbuf_addf(&full_path, "%s/%s", ref_store->gitdir, refname); | |
1658 | ||
1659 | if (strbuf_read_file(&content, full_path.buf, 0) < 0) | |
1660 | goto done; | |
1661 | ||
1662 | result = parse_loose_ref_contents(content.buf, oid, referent, type); | |
1663 | ||
1664 | done: | |
1665 | strbuf_release(&full_path); | |
1666 | strbuf_release(&content); | |
1667 | return result; | |
1668 | } | |
1669 | ||
470be518 | 1670 | int refs_read_raw_ref(struct ref_store *ref_store, |
99afe91a | 1671 | const char *refname, struct object_id *oid, |
470be518 MH |
1672 | struct strbuf *referent, unsigned int *type) |
1673 | { | |
e8115302 HWN |
1674 | if (!strcmp(refname, "FETCH_HEAD") || !strcmp(refname, "MERGE_HEAD")) { |
1675 | return refs_read_special_head(ref_store, refname, oid, referent, | |
1676 | type); | |
1677 | } | |
1678 | ||
1679 | return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, | |
5b12e16b | 1680 | type, &errno); |
470be518 MH |
1681 | } |
1682 | ||
2d0663b2 | 1683 | /* This function needs to return a meaningful errno on failure */ |
7d2df051 | 1684 | const char *refs_resolve_ref_unsafe(struct ref_store *refs, |
3c0cb0cb MH |
1685 | const char *refname, |
1686 | int resolve_flags, | |
49e61479 | 1687 | struct object_id *oid, int *flags) |
2d0663b2 DT |
1688 | { |
1689 | static struct strbuf sb_refname = STRBUF_INIT; | |
54fad661 | 1690 | struct object_id unused_oid; |
2d0663b2 DT |
1691 | int unused_flags; |
1692 | int symref_count; | |
1693 | ||
49e61479 | 1694 | if (!oid) |
1695 | oid = &unused_oid; | |
2d0663b2 DT |
1696 | if (!flags) |
1697 | flags = &unused_flags; | |
1698 | ||
1699 | *flags = 0; | |
1700 | ||
1701 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1702 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
1703 | !refname_is_safe(refname)) { | |
1704 | errno = EINVAL; | |
1705 | return NULL; | |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * dwim_ref() uses REF_ISBROKEN to distinguish between | |
1710 | * missing refs and refs that were present but invalid, | |
1711 | * to complain about the latter to stderr. | |
1712 | * | |
1713 | * We don't know whether the ref exists, so don't set | |
1714 | * REF_ISBROKEN yet. | |
1715 | */ | |
1716 | *flags |= REF_BAD_NAME; | |
1717 | } | |
1718 | ||
1719 | for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) { | |
1720 | unsigned int read_flags = 0; | |
1721 | ||
470be518 | 1722 | if (refs_read_raw_ref(refs, refname, |
99afe91a | 1723 | oid, &sb_refname, &read_flags)) { |
2d0663b2 | 1724 | *flags |= read_flags; |
a1c1d817 JK |
1725 | |
1726 | /* In reading mode, refs must eventually resolve */ | |
1727 | if (resolve_flags & RESOLVE_REF_READING) | |
1728 | return NULL; | |
1729 | ||
1730 | /* | |
1731 | * Otherwise a missing ref is OK. But the files backend | |
1732 | * may show errors besides ENOENT if there are | |
1733 | * similarly-named refs. | |
1734 | */ | |
1735 | if (errno != ENOENT && | |
1736 | errno != EISDIR && | |
1737 | errno != ENOTDIR) | |
2d0663b2 | 1738 | return NULL; |
a1c1d817 | 1739 | |
49e61479 | 1740 | oidclr(oid); |
2d0663b2 DT |
1741 | if (*flags & REF_BAD_NAME) |
1742 | *flags |= REF_ISBROKEN; | |
1743 | return refname; | |
1744 | } | |
1745 | ||
1746 | *flags |= read_flags; | |
1747 | ||
1748 | if (!(read_flags & REF_ISSYMREF)) { | |
1749 | if (*flags & REF_BAD_NAME) { | |
49e61479 | 1750 | oidclr(oid); |
2d0663b2 DT |
1751 | *flags |= REF_ISBROKEN; |
1752 | } | |
1753 | return refname; | |
1754 | } | |
1755 | ||
1756 | refname = sb_refname.buf; | |
1757 | if (resolve_flags & RESOLVE_REF_NO_RECURSE) { | |
49e61479 | 1758 | oidclr(oid); |
2d0663b2 DT |
1759 | return refname; |
1760 | } | |
1761 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1762 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
1763 | !refname_is_safe(refname)) { | |
1764 | errno = EINVAL; | |
1765 | return NULL; | |
1766 | } | |
1767 | ||
1768 | *flags |= REF_ISBROKEN | REF_BAD_NAME; | |
1769 | } | |
1770 | } | |
1771 | ||
1772 | errno = ELOOP; | |
1773 | return NULL; | |
1774 | } | |
00eebe35 | 1775 | |
6fb5acfd DT |
1776 | /* backend functions */ |
1777 | int refs_init_db(struct strbuf *err) | |
1778 | { | |
23a3f0cb | 1779 | struct ref_store *refs = get_main_ref_store(the_repository); |
6fb5acfd DT |
1780 | |
1781 | return refs->be->init_db(refs, err); | |
1782 | } | |
1783 | ||
bd40dcda | 1784 | const char *resolve_ref_unsafe(const char *refname, int resolve_flags, |
49e61479 | 1785 | struct object_id *oid, int *flags) |
bd40dcda | 1786 | { |
23a3f0cb | 1787 | return refs_resolve_ref_unsafe(get_main_ref_store(the_repository), refname, |
49e61479 | 1788 | resolve_flags, oid, flags); |
bd40dcda MH |
1789 | } |
1790 | ||
a8355bb7 | 1791 | int resolve_gitlink_ref(const char *submodule, const char *refname, |
a98e6101 | 1792 | struct object_id *oid) |
424dcc76 | 1793 | { |
424dcc76 MH |
1794 | struct ref_store *refs; |
1795 | int flags; | |
1796 | ||
29babbee | 1797 | refs = get_submodule_ref_store(submodule); |
48a8475f | 1798 | |
424dcc76 MH |
1799 | if (!refs) |
1800 | return -1; | |
1801 | ||
49e61479 | 1802 | if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) || |
a98e6101 | 1803 | is_null_oid(oid)) |
424dcc76 MH |
1804 | return -1; |
1805 | return 0; | |
1806 | } | |
1807 | ||
0c064d90 | 1808 | struct ref_store_hash_entry |
7d4558c4 | 1809 | { |
e2b5038d | 1810 | struct hashmap_entry ent; |
7d4558c4 MH |
1811 | |
1812 | struct ref_store *refs; | |
1813 | ||
0c064d90 NTND |
1814 | /* NUL-terminated identifier of the ref store: */ |
1815 | char name[FLEX_ARRAY]; | |
7d4558c4 MH |
1816 | }; |
1817 | ||
7663cdc8 | 1818 | static int ref_store_hash_cmp(const void *unused_cmp_data, |
939af16e EW |
1819 | const struct hashmap_entry *eptr, |
1820 | const struct hashmap_entry *entry_or_key, | |
7d4558c4 MH |
1821 | const void *keydata) |
1822 | { | |
939af16e EW |
1823 | const struct ref_store_hash_entry *e1, *e2; |
1824 | const char *name; | |
1825 | ||
1826 | e1 = container_of(eptr, const struct ref_store_hash_entry, ent); | |
1827 | e2 = container_of(entry_or_key, const struct ref_store_hash_entry, ent); | |
1828 | name = keydata ? keydata : e2->name; | |
7d4558c4 | 1829 | |
0c064d90 | 1830 | return strcmp(e1->name, name); |
7d4558c4 MH |
1831 | } |
1832 | ||
0c064d90 NTND |
1833 | static struct ref_store_hash_entry *alloc_ref_store_hash_entry( |
1834 | const char *name, struct ref_store *refs) | |
7d4558c4 | 1835 | { |
0c064d90 | 1836 | struct ref_store_hash_entry *entry; |
7d4558c4 | 1837 | |
0c064d90 | 1838 | FLEX_ALLOC_STR(entry, name, name); |
d22245a2 | 1839 | hashmap_entry_init(&entry->ent, strhash(name)); |
7d4558c4 MH |
1840 | entry->refs = refs; |
1841 | return entry; | |
1842 | } | |
1843 | ||
7d4558c4 MH |
1844 | /* A hashmap of ref_stores, stored by submodule name: */ |
1845 | static struct hashmap submodule_ref_stores; | |
00eebe35 | 1846 | |
17eff96b NTND |
1847 | /* A hashmap of ref_stores, stored by worktree id: */ |
1848 | static struct hashmap worktree_ref_stores; | |
1849 | ||
c468da4e | 1850 | /* |
0c064d90 NTND |
1851 | * Look up a ref store by name. If that ref_store hasn't been |
1852 | * registered yet, return NULL. | |
c468da4e | 1853 | */ |
0c064d90 NTND |
1854 | static struct ref_store *lookup_ref_store_map(struct hashmap *map, |
1855 | const char *name) | |
00eebe35 | 1856 | { |
0c064d90 | 1857 | struct ref_store_hash_entry *entry; |
f23a4651 | 1858 | unsigned int hash; |
00eebe35 | 1859 | |
0c064d90 | 1860 | if (!map->tablesize) |
7d4558c4 MH |
1861 | /* It's initialized on demand in register_ref_store(). */ |
1862 | return NULL; | |
620a66b9 | 1863 | |
f23a4651 EW |
1864 | hash = strhash(name); |
1865 | entry = hashmap_get_entry_from_hash(map, hash, name, | |
1866 | struct ref_store_hash_entry, ent); | |
7d4558c4 | 1867 | return entry ? entry->refs : NULL; |
00eebe35 MH |
1868 | } |
1869 | ||
c468da4e MH |
1870 | /* |
1871 | * Create, record, and return a ref_store instance for the specified | |
5d0bc90e | 1872 | * gitdir. |
c468da4e | 1873 | */ |
34224e14 JT |
1874 | static struct ref_store *ref_store_init(struct repository *repo, |
1875 | const char *gitdir, | |
9e7ec634 | 1876 | unsigned int flags) |
00eebe35 MH |
1877 | { |
1878 | const char *be_name = "files"; | |
1879 | struct ref_storage_be *be = find_ref_storage_backend(be_name); | |
ba88add5 | 1880 | struct ref_store *refs; |
00eebe35 MH |
1881 | |
1882 | if (!be) | |
033abf97 | 1883 | BUG("reference backend %s is unknown", be_name); |
00eebe35 | 1884 | |
34224e14 | 1885 | refs = be->init(repo, gitdir, flags); |
ba88add5 | 1886 | return refs; |
00eebe35 MH |
1887 | } |
1888 | ||
64a74161 | 1889 | struct ref_store *get_main_ref_store(struct repository *r) |
24c8407e | 1890 | { |
02204610 JK |
1891 | if (r->refs_private) |
1892 | return r->refs_private; | |
24c8407e | 1893 | |
2dc417ab JK |
1894 | if (!r->gitdir) |
1895 | BUG("attempting to get main_ref_store outside of repository"); | |
1896 | ||
34224e14 | 1897 | r->refs_private = ref_store_init(r, r->gitdir, REF_STORE_ALL_CAPS); |
4441f427 | 1898 | r->refs_private = maybe_debug_wrap_ref_store(r->gitdir, r->refs_private); |
02204610 | 1899 | return r->refs_private; |
378dc910 NTND |
1900 | } |
1901 | ||
1902 | /* | |
0c064d90 NTND |
1903 | * Associate a ref store with a name. It is a fatal error to call this |
1904 | * function twice for the same name. | |
378dc910 | 1905 | */ |
0c064d90 NTND |
1906 | static void register_ref_store_map(struct hashmap *map, |
1907 | const char *type, | |
1908 | struct ref_store *refs, | |
1909 | const char *name) | |
378dc910 | 1910 | { |
26b455f2 EW |
1911 | struct ref_store_hash_entry *entry; |
1912 | ||
0c064d90 | 1913 | if (!map->tablesize) |
7663cdc8 | 1914 | hashmap_init(map, ref_store_hash_cmp, NULL, 0); |
378dc910 | 1915 | |
26b455f2 EW |
1916 | entry = alloc_ref_store_hash_entry(name, refs); |
1917 | if (hashmap_put(map, &entry->ent)) | |
033abf97 | 1918 | BUG("%s ref_store '%s' initialized twice", type, name); |
24c8407e NTND |
1919 | } |
1920 | ||
18d0002d | 1921 | struct ref_store *get_submodule_ref_store(const char *submodule) |
00eebe35 | 1922 | { |
126c9e05 | 1923 | struct strbuf submodule_sb = STRBUF_INIT; |
00eebe35 | 1924 | struct ref_store *refs; |
29babbee NTND |
1925 | char *to_free = NULL; |
1926 | size_t len; | |
34224e14 | 1927 | struct repository *subrepo; |
00eebe35 | 1928 | |
82a150f2 NTND |
1929 | if (!submodule) |
1930 | return NULL; | |
1931 | ||
873ea90d NTND |
1932 | len = strlen(submodule); |
1933 | while (len && is_dir_sep(submodule[len - 1])) | |
1934 | len--; | |
1935 | if (!len) | |
1936 | return NULL; | |
00eebe35 | 1937 | |
29babbee NTND |
1938 | if (submodule[len]) |
1939 | /* We need to strip off one or more trailing slashes */ | |
1940 | submodule = to_free = xmemdupz(submodule, len); | |
00eebe35 | 1941 | |
0c064d90 | 1942 | refs = lookup_ref_store_map(&submodule_ref_stores, submodule); |
126c9e05 | 1943 | if (refs) |
2c616c17 | 1944 | goto done; |
00eebe35 | 1945 | |
126c9e05 | 1946 | strbuf_addstr(&submodule_sb, submodule); |
2c616c17 NTND |
1947 | if (!is_nonbare_repository_dir(&submodule_sb)) |
1948 | goto done; | |
00eebe35 | 1949 | |
2c616c17 NTND |
1950 | if (submodule_to_gitdir(&submodule_sb, submodule)) |
1951 | goto done; | |
00eebe35 | 1952 | |
34224e14 JT |
1953 | subrepo = xmalloc(sizeof(*subrepo)); |
1954 | /* | |
1955 | * NEEDSWORK: Make get_submodule_ref_store() work with arbitrary | |
1956 | * superprojects other than the_repository. This probably should be | |
1957 | * done by making it take a struct repository * parameter instead of a | |
1958 | * submodule path. | |
1959 | */ | |
1960 | if (repo_submodule_init(subrepo, the_repository, submodule, | |
1961 | null_oid())) { | |
1962 | free(subrepo); | |
1963 | goto done; | |
1964 | } | |
1965 | refs = ref_store_init(subrepo, submodule_sb.buf, | |
9e7ec634 | 1966 | REF_STORE_READ | REF_STORE_ODB); |
0c064d90 NTND |
1967 | register_ref_store_map(&submodule_ref_stores, "submodule", |
1968 | refs, submodule); | |
5d0bc90e | 1969 | |
2c616c17 | 1970 | done: |
5d0bc90e | 1971 | strbuf_release(&submodule_sb); |
29babbee NTND |
1972 | free(to_free); |
1973 | ||
00eebe35 MH |
1974 | return refs; |
1975 | } | |
1976 | ||
17eff96b NTND |
1977 | struct ref_store *get_worktree_ref_store(const struct worktree *wt) |
1978 | { | |
1979 | struct ref_store *refs; | |
1980 | const char *id; | |
1981 | ||
1982 | if (wt->is_current) | |
23a3f0cb | 1983 | return get_main_ref_store(the_repository); |
17eff96b NTND |
1984 | |
1985 | id = wt->id ? wt->id : "/"; | |
1986 | refs = lookup_ref_store_map(&worktree_ref_stores, id); | |
1987 | if (refs) | |
1988 | return refs; | |
1989 | ||
1990 | if (wt->id) | |
34224e14 JT |
1991 | refs = ref_store_init(the_repository, |
1992 | git_common_path("worktrees/%s", wt->id), | |
17eff96b NTND |
1993 | REF_STORE_ALL_CAPS); |
1994 | else | |
34224e14 JT |
1995 | refs = ref_store_init(the_repository, |
1996 | get_git_common_dir(), | |
17eff96b NTND |
1997 | REF_STORE_ALL_CAPS); |
1998 | ||
1999 | if (refs) | |
2000 | register_ref_store_map(&worktree_ref_stores, "worktree", | |
2001 | refs, id); | |
2002 | return refs; | |
2003 | } | |
2004 | ||
620a66b9 | 2005 | void base_ref_store_init(struct ref_store *refs, |
fbfd0a29 | 2006 | const struct ref_storage_be *be) |
00eebe35 | 2007 | { |
620a66b9 | 2008 | refs->be = be; |
00eebe35 | 2009 | } |
127b42a1 RS |
2010 | |
2011 | /* backend functions */ | |
7d2df051 | 2012 | int refs_pack_refs(struct ref_store *refs, unsigned int flags) |
8231527e | 2013 | { |
8231527e MH |
2014 | return refs->be->pack_refs(refs, flags); |
2015 | } | |
2016 | ||
36a31792 | 2017 | int peel_iterated_oid(const struct object_id *base, struct object_id *peeled) |
7d2df051 | 2018 | { |
36a31792 JK |
2019 | if (current_ref_iter && |
2020 | (current_ref_iter->oid == base || | |
2021 | oideq(current_ref_iter->oid, base))) | |
2022 | return ref_iterator_peel(current_ref_iter, peeled); | |
ba1c052f | 2023 | |
617480d7 | 2024 | return peel_object(base, peeled) ? -1 : 0; |
7d2df051 | 2025 | } |
bd427cf2 | 2026 | |
7d2df051 NTND |
2027 | int refs_create_symref(struct ref_store *refs, |
2028 | const char *ref_target, | |
2029 | const char *refs_heads_master, | |
2030 | const char *logmsg) | |
2031 | { | |
523fa69c JH |
2032 | char *msg; |
2033 | int retval; | |
2034 | ||
2035 | msg = normalize_reflog_message(logmsg); | |
2036 | retval = refs->be->create_symref(refs, ref_target, refs_heads_master, | |
2037 | msg); | |
2038 | free(msg); | |
2039 | return retval; | |
bd427cf2 MH |
2040 | } |
2041 | ||
284689ba MH |
2042 | int create_symref(const char *ref_target, const char *refs_heads_master, |
2043 | const char *logmsg) | |
2044 | { | |
23a3f0cb | 2045 | return refs_create_symref(get_main_ref_store(the_repository), ref_target, |
7d2df051 | 2046 | refs_heads_master, logmsg); |
284689ba MH |
2047 | } |
2048 | ||
2ced105c MH |
2049 | int ref_update_reject_duplicates(struct string_list *refnames, |
2050 | struct strbuf *err) | |
2051 | { | |
a552e50e | 2052 | size_t i, n = refnames->nr; |
2ced105c MH |
2053 | |
2054 | assert(err); | |
2055 | ||
8556f8d6 MH |
2056 | for (i = 1; i < n; i++) { |
2057 | int cmp = strcmp(refnames->items[i - 1].string, | |
2058 | refnames->items[i].string); | |
2059 | ||
2060 | if (!cmp) { | |
2ced105c | 2061 | strbuf_addf(err, |
661558f0 | 2062 | _("multiple updates for ref '%s' not allowed"), |
2ced105c MH |
2063 | refnames->items[i].string); |
2064 | return 1; | |
8556f8d6 | 2065 | } else if (cmp > 0) { |
033abf97 | 2066 | BUG("ref_update_reject_duplicates() received unsorted list"); |
2ced105c | 2067 | } |
8556f8d6 | 2068 | } |
2ced105c MH |
2069 | return 0; |
2070 | } | |
2071 | ||
67541597 PS |
2072 | static int run_transaction_hook(struct ref_transaction *transaction, |
2073 | const char *state) | |
2074 | { | |
2075 | struct child_process proc = CHILD_PROCESS_INIT; | |
2076 | struct strbuf buf = STRBUF_INIT; | |
0a0fbbe3 | 2077 | const char *hook; |
67541597 PS |
2078 | int ret = 0, i; |
2079 | ||
0a0fbbe3 | 2080 | hook = find_hook("reference-transaction"); |
67541597 | 2081 | if (!hook) |
67541597 | 2082 | return ret; |
67541597 | 2083 | |
c972bf4c | 2084 | strvec_pushl(&proc.args, hook, state, NULL); |
67541597 PS |
2085 | proc.in = -1; |
2086 | proc.stdout_to_stderr = 1; | |
2087 | proc.trace2_hook_name = "reference-transaction"; | |
2088 | ||
2089 | ret = start_command(&proc); | |
2090 | if (ret) | |
2091 | return ret; | |
2092 | ||
2093 | sigchain_push(SIGPIPE, SIG_IGN); | |
2094 | ||
2095 | for (i = 0; i < transaction->nr; i++) { | |
2096 | struct ref_update *update = transaction->updates[i]; | |
2097 | ||
2098 | strbuf_reset(&buf); | |
2099 | strbuf_addf(&buf, "%s %s %s\n", | |
2100 | oid_to_hex(&update->old_oid), | |
2101 | oid_to_hex(&update->new_oid), | |
2102 | update->refname); | |
2103 | ||
2104 | if (write_in_full(proc.in, buf.buf, buf.len) < 0) { | |
2105 | if (errno != EPIPE) | |
2106 | ret = -1; | |
2107 | break; | |
2108 | } | |
2109 | } | |
2110 | ||
2111 | close(proc.in); | |
2112 | sigchain_pop(SIGPIPE); | |
2113 | strbuf_release(&buf); | |
2114 | ||
2115 | ret |= finish_command(&proc); | |
2116 | return ret; | |
2117 | } | |
2118 | ||
30173b88 MH |
2119 | int ref_transaction_prepare(struct ref_transaction *transaction, |
2120 | struct strbuf *err) | |
127b42a1 | 2121 | { |
c0fe4e8b | 2122 | struct ref_store *refs = transaction->ref_store; |
67541597 | 2123 | int ret; |
127b42a1 | 2124 | |
8d4240d3 MH |
2125 | switch (transaction->state) { |
2126 | case REF_TRANSACTION_OPEN: | |
2127 | /* Good. */ | |
2128 | break; | |
30173b88 | 2129 | case REF_TRANSACTION_PREPARED: |
033abf97 | 2130 | BUG("prepare called twice on reference transaction"); |
30173b88 | 2131 | break; |
8d4240d3 | 2132 | case REF_TRANSACTION_CLOSED: |
033abf97 | 2133 | BUG("prepare called on a closed reference transaction"); |
8d4240d3 MH |
2134 | break; |
2135 | default: | |
033abf97 | 2136 | BUG("unexpected reference transaction state"); |
8d4240d3 MH |
2137 | break; |
2138 | } | |
2139 | ||
d8f4481c JK |
2140 | if (getenv(GIT_QUARANTINE_ENVIRONMENT)) { |
2141 | strbuf_addstr(err, | |
2142 | _("ref updates forbidden inside quarantine environment")); | |
2143 | return -1; | |
2144 | } | |
2145 | ||
67541597 PS |
2146 | ret = refs->be->transaction_prepare(refs, transaction, err); |
2147 | if (ret) | |
2148 | return ret; | |
2149 | ||
2150 | ret = run_transaction_hook(transaction, "prepared"); | |
2151 | if (ret) { | |
2152 | ref_transaction_abort(transaction, err); | |
2153 | die(_("ref updates aborted by hook")); | |
2154 | } | |
2155 | ||
2156 | return 0; | |
30173b88 MH |
2157 | } |
2158 | ||
2159 | int ref_transaction_abort(struct ref_transaction *transaction, | |
2160 | struct strbuf *err) | |
2161 | { | |
2162 | struct ref_store *refs = transaction->ref_store; | |
2163 | int ret = 0; | |
2164 | ||
2165 | switch (transaction->state) { | |
2166 | case REF_TRANSACTION_OPEN: | |
2167 | /* No need to abort explicitly. */ | |
2168 | break; | |
2169 | case REF_TRANSACTION_PREPARED: | |
2170 | ret = refs->be->transaction_abort(refs, transaction, err); | |
2171 | break; | |
2172 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2173 | BUG("abort called on a closed reference transaction"); |
30173b88 MH |
2174 | break; |
2175 | default: | |
033abf97 | 2176 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2177 | break; |
2178 | } | |
2179 | ||
67541597 PS |
2180 | run_transaction_hook(transaction, "aborted"); |
2181 | ||
30173b88 MH |
2182 | ref_transaction_free(transaction); |
2183 | return ret; | |
2184 | } | |
2185 | ||
2186 | int ref_transaction_commit(struct ref_transaction *transaction, | |
2187 | struct strbuf *err) | |
2188 | { | |
2189 | struct ref_store *refs = transaction->ref_store; | |
2190 | int ret; | |
2191 | ||
2192 | switch (transaction->state) { | |
2193 | case REF_TRANSACTION_OPEN: | |
2194 | /* Need to prepare first. */ | |
2195 | ret = ref_transaction_prepare(transaction, err); | |
2196 | if (ret) | |
2197 | return ret; | |
2198 | break; | |
2199 | case REF_TRANSACTION_PREPARED: | |
2200 | /* Fall through to finish. */ | |
2201 | break; | |
2202 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2203 | BUG("commit called on a closed reference transaction"); |
30173b88 MH |
2204 | break; |
2205 | default: | |
033abf97 | 2206 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2207 | break; |
2208 | } | |
2209 | ||
67541597 PS |
2210 | ret = refs->be->transaction_finish(refs, transaction, err); |
2211 | if (!ret) | |
2212 | run_transaction_hook(transaction, "committed"); | |
2213 | return ret; | |
127b42a1 | 2214 | } |
62665823 | 2215 | |
7d2df051 NTND |
2216 | int refs_verify_refname_available(struct ref_store *refs, |
2217 | const char *refname, | |
b05855b5 | 2218 | const struct string_list *extras, |
7d2df051 NTND |
2219 | const struct string_list *skip, |
2220 | struct strbuf *err) | |
62665823 | 2221 | { |
b05855b5 MH |
2222 | const char *slash; |
2223 | const char *extra_refname; | |
2224 | struct strbuf dirname = STRBUF_INIT; | |
2225 | struct strbuf referent = STRBUF_INIT; | |
2226 | struct object_id oid; | |
2227 | unsigned int type; | |
2228 | struct ref_iterator *iter; | |
2229 | int ok; | |
2230 | int ret = -1; | |
2231 | ||
2232 | /* | |
2233 | * For the sake of comments in this function, suppose that | |
2234 | * refname is "refs/foo/bar". | |
2235 | */ | |
2236 | ||
2237 | assert(err); | |
2238 | ||
2239 | strbuf_grow(&dirname, strlen(refname) + 1); | |
2240 | for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) { | |
2241 | /* Expand dirname to the new prefix, not including the trailing slash: */ | |
2242 | strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len); | |
2243 | ||
2244 | /* | |
2245 | * We are still at a leading dir of the refname (e.g., | |
2246 | * "refs/foo"; if there is a reference with that name, | |
2247 | * it is a conflict, *unless* it is in skip. | |
2248 | */ | |
2249 | if (skip && string_list_has_string(skip, dirname.buf)) | |
2250 | continue; | |
2251 | ||
99afe91a | 2252 | if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, &type)) { |
661558f0 | 2253 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2254 | dirname.buf, refname); |
2255 | goto cleanup; | |
2256 | } | |
2257 | ||
2258 | if (extras && string_list_has_string(extras, dirname.buf)) { | |
661558f0 | 2259 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2260 | refname, dirname.buf); |
2261 | goto cleanup; | |
2262 | } | |
2263 | } | |
2264 | ||
2265 | /* | |
2266 | * We are at the leaf of our refname (e.g., "refs/foo/bar"). | |
2267 | * There is no point in searching for a reference with that | |
2268 | * name, because a refname isn't considered to conflict with | |
2269 | * itself. But we still need to check for references whose | |
2270 | * names are in the "refs/foo/bar/" namespace, because they | |
2271 | * *do* conflict. | |
2272 | */ | |
2273 | strbuf_addstr(&dirname, refname + dirname.len); | |
2274 | strbuf_addch(&dirname, '/'); | |
2275 | ||
2276 | iter = refs_ref_iterator_begin(refs, dirname.buf, 0, | |
2277 | DO_FOR_EACH_INCLUDE_BROKEN); | |
2278 | while ((ok = ref_iterator_advance(iter)) == ITER_OK) { | |
2279 | if (skip && | |
2280 | string_list_has_string(skip, iter->refname)) | |
2281 | continue; | |
2282 | ||
661558f0 | 2283 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2284 | iter->refname, refname); |
2285 | ref_iterator_abort(iter); | |
2286 | goto cleanup; | |
2287 | } | |
2288 | ||
2289 | if (ok != ITER_DONE) | |
033abf97 | 2290 | BUG("error while iterating over references"); |
b05855b5 MH |
2291 | |
2292 | extra_refname = find_descendant_ref(dirname.buf, extras, skip); | |
2293 | if (extra_refname) | |
661558f0 | 2294 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2295 | refname, extra_refname); |
2296 | else | |
2297 | ret = 0; | |
2298 | ||
2299 | cleanup: | |
2300 | strbuf_release(&referent); | |
2301 | strbuf_release(&dirname); | |
2302 | return ret; | |
62665823 | 2303 | } |
e3688bd6 | 2304 | |
7d2df051 | 2305 | int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
e3688bd6 | 2306 | { |
e3688bd6 | 2307 | struct ref_iterator *iter; |
4a6067cd | 2308 | struct do_for_each_ref_help hp = { fn, cb_data }; |
e3688bd6 DT |
2309 | |
2310 | iter = refs->be->reflog_iterator_begin(refs); | |
2311 | ||
4a6067cd SB |
2312 | return do_for_each_repo_ref_iterator(the_repository, iter, |
2313 | do_for_each_ref_helper, &hp); | |
e3688bd6 DT |
2314 | } |
2315 | ||
7d2df051 | 2316 | int for_each_reflog(each_ref_fn fn, void *cb_data) |
e3688bd6 | 2317 | { |
23a3f0cb | 2318 | return refs_for_each_reflog(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 | 2319 | } |
e3688bd6 | 2320 | |
7d2df051 NTND |
2321 | int refs_for_each_reflog_ent_reverse(struct ref_store *refs, |
2322 | const char *refname, | |
2323 | each_reflog_ent_fn fn, | |
2324 | void *cb_data) | |
2325 | { | |
e3688bd6 DT |
2326 | return refs->be->for_each_reflog_ent_reverse(refs, refname, |
2327 | fn, cb_data); | |
2328 | } | |
2329 | ||
7d2df051 NTND |
2330 | int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, |
2331 | void *cb_data) | |
2332 | { | |
23a3f0cb | 2333 | return refs_for_each_reflog_ent_reverse(get_main_ref_store(the_repository), |
7d2df051 NTND |
2334 | refname, fn, cb_data); |
2335 | } | |
2336 | ||
2337 | int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname, | |
2338 | each_reflog_ent_fn fn, void *cb_data) | |
2339 | { | |
2340 | return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data); | |
2341 | } | |
2342 | ||
e3688bd6 DT |
2343 | int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, |
2344 | void *cb_data) | |
2345 | { | |
23a3f0cb | 2346 | return refs_for_each_reflog_ent(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2347 | fn, cb_data); |
2348 | } | |
e3688bd6 | 2349 | |
7d2df051 NTND |
2350 | int refs_reflog_exists(struct ref_store *refs, const char *refname) |
2351 | { | |
2352 | return refs->be->reflog_exists(refs, refname); | |
e3688bd6 DT |
2353 | } |
2354 | ||
2355 | int reflog_exists(const char *refname) | |
2356 | { | |
23a3f0cb | 2357 | return refs_reflog_exists(get_main_ref_store(the_repository), refname); |
7d2df051 | 2358 | } |
e3688bd6 | 2359 | |
7d2df051 NTND |
2360 | int refs_create_reflog(struct ref_store *refs, const char *refname, |
2361 | int force_create, struct strbuf *err) | |
2362 | { | |
2363 | return refs->be->create_reflog(refs, refname, force_create, err); | |
e3688bd6 DT |
2364 | } |
2365 | ||
2366 | int safe_create_reflog(const char *refname, int force_create, | |
2367 | struct strbuf *err) | |
2368 | { | |
23a3f0cb | 2369 | return refs_create_reflog(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2370 | force_create, err); |
2371 | } | |
e3688bd6 | 2372 | |
7d2df051 NTND |
2373 | int refs_delete_reflog(struct ref_store *refs, const char *refname) |
2374 | { | |
2375 | return refs->be->delete_reflog(refs, refname); | |
e3688bd6 DT |
2376 | } |
2377 | ||
2378 | int delete_reflog(const char *refname) | |
2379 | { | |
23a3f0cb | 2380 | return refs_delete_reflog(get_main_ref_store(the_repository), refname); |
7d2df051 | 2381 | } |
e3688bd6 | 2382 | |
7d2df051 | 2383 | int refs_reflog_expire(struct ref_store *refs, |
cc40b5ce | 2384 | const char *refname, |
7d2df051 NTND |
2385 | unsigned int flags, |
2386 | reflog_expiry_prepare_fn prepare_fn, | |
2387 | reflog_expiry_should_prune_fn should_prune_fn, | |
2388 | reflog_expiry_cleanup_fn cleanup_fn, | |
2389 | void *policy_cb_data) | |
2390 | { | |
cc40b5ce | 2391 | return refs->be->reflog_expire(refs, refname, flags, |
7d2df051 NTND |
2392 | prepare_fn, should_prune_fn, |
2393 | cleanup_fn, policy_cb_data); | |
e3688bd6 DT |
2394 | } |
2395 | ||
cc40b5ce | 2396 | int reflog_expire(const char *refname, |
e3688bd6 DT |
2397 | unsigned int flags, |
2398 | reflog_expiry_prepare_fn prepare_fn, | |
2399 | reflog_expiry_should_prune_fn should_prune_fn, | |
2400 | reflog_expiry_cleanup_fn cleanup_fn, | |
2401 | void *policy_cb_data) | |
2402 | { | |
23a3f0cb | 2403 | return refs_reflog_expire(get_main_ref_store(the_repository), |
cc40b5ce | 2404 | refname, flags, |
7d2df051 NTND |
2405 | prepare_fn, should_prune_fn, |
2406 | cleanup_fn, policy_cb_data); | |
e3688bd6 | 2407 | } |
fc681463 DT |
2408 | |
2409 | int initial_ref_transaction_commit(struct ref_transaction *transaction, | |
2410 | struct strbuf *err) | |
2411 | { | |
c0fe4e8b | 2412 | struct ref_store *refs = transaction->ref_store; |
fc681463 DT |
2413 | |
2414 | return refs->be->initial_transaction_commit(refs, transaction, err); | |
2415 | } | |
a27dcf89 | 2416 | |
523fa69c | 2417 | int refs_delete_refs(struct ref_store *refs, const char *logmsg, |
64da4199 | 2418 | struct string_list *refnames, unsigned int flags) |
a27dcf89 | 2419 | { |
523fa69c JH |
2420 | char *msg; |
2421 | int retval; | |
2422 | ||
2423 | msg = normalize_reflog_message(logmsg); | |
2424 | retval = refs->be->delete_refs(refs, msg, refnames, flags); | |
2425 | free(msg); | |
2426 | return retval; | |
a27dcf89 | 2427 | } |
9b6b40d9 | 2428 | |
64da4199 MH |
2429 | int delete_refs(const char *msg, struct string_list *refnames, |
2430 | unsigned int flags) | |
9b6b40d9 | 2431 | { |
23a3f0cb | 2432 | return refs_delete_refs(get_main_ref_store(the_repository), msg, refnames, flags); |
7d2df051 | 2433 | } |
9b6b40d9 | 2434 | |
7d2df051 NTND |
2435 | int refs_rename_ref(struct ref_store *refs, const char *oldref, |
2436 | const char *newref, const char *logmsg) | |
2437 | { | |
523fa69c JH |
2438 | char *msg; |
2439 | int retval; | |
2440 | ||
2441 | msg = normalize_reflog_message(logmsg); | |
2442 | retval = refs->be->rename_ref(refs, oldref, newref, msg); | |
2443 | free(msg); | |
2444 | return retval; | |
9b6b40d9 | 2445 | } |
7d2df051 NTND |
2446 | |
2447 | int rename_ref(const char *oldref, const char *newref, const char *logmsg) | |
2448 | { | |
23a3f0cb | 2449 | return refs_rename_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
7d2df051 | 2450 | } |
52d59cc6 SD |
2451 | |
2452 | int refs_copy_existing_ref(struct ref_store *refs, const char *oldref, | |
2453 | const char *newref, const char *logmsg) | |
2454 | { | |
523fa69c JH |
2455 | char *msg; |
2456 | int retval; | |
2457 | ||
2458 | msg = normalize_reflog_message(logmsg); | |
2459 | retval = refs->be->copy_ref(refs, oldref, newref, msg); | |
2460 | free(msg); | |
2461 | return retval; | |
52d59cc6 SD |
2462 | } |
2463 | ||
2464 | int copy_existing_ref(const char *oldref, const char *newref, const char *logmsg) | |
2465 | { | |
23a3f0cb | 2466 | return refs_copy_existing_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
52d59cc6 | 2467 | } |