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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" |
cbd53a21 | 12 | #include "object-store.h" |
cf0adba7 JH |
13 | #include "object.h" |
14 | #include "tag.h" | |
5d0bc90e | 15 | #include "submodule.h" |
17eff96b | 16 | #include "worktree.h" |
b4be7410 | 17 | #include "argv-array.h" |
23a3f0cb | 18 | #include "repository.h" |
3581d793 | 19 | |
3dce444f RS |
20 | /* |
21 | * List of all available backends | |
22 | */ | |
23 | static struct ref_storage_be *refs_backends = &refs_be_files; | |
24 | ||
25 | static struct ref_storage_be *find_ref_storage_backend(const char *name) | |
26 | { | |
27 | struct ref_storage_be *be; | |
28 | for (be = refs_backends; be; be = be->next) | |
29 | if (!strcmp(be->name, name)) | |
30 | return be; | |
31 | return NULL; | |
32 | } | |
33 | ||
34 | int ref_storage_backend_exists(const char *name) | |
35 | { | |
36 | return find_ref_storage_backend(name) != NULL; | |
37 | } | |
38 | ||
bc5fd6d3 | 39 | /* |
dde8a902 DT |
40 | * How to handle various characters in refnames: |
41 | * 0: An acceptable character for refs | |
5e650228 JH |
42 | * 1: End-of-component |
43 | * 2: ., look for a preceding . to reject .. in refs | |
44 | * 3: {, look for a preceding @ to reject @{ in refs | |
53a8555e | 45 | * 4: A bad character: ASCII control characters, and |
cd377f45 JK |
46 | * ":", "?", "[", "\", "^", "~", SP, or TAB |
47 | * 5: *, reject unless REFNAME_REFSPEC_PATTERN is set | |
dde8a902 DT |
48 | */ |
49 | static unsigned char refname_disposition[256] = { | |
5e650228 JH |
50 | 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
51 | 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, | |
cd377f45 | 52 | 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 1, |
5e650228 | 53 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4, |
dde8a902 | 54 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
5e650228 JH |
55 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0, |
56 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
57 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4 | |
dde8a902 DT |
58 | }; |
59 | ||
60 | /* | |
61 | * Try to read one refname component from the front of refname. | |
62 | * Return the length of the component found, or -1 if the component is | |
63 | * not legal. It is legal if it is something reasonable to have under | |
64 | * ".git/refs/"; We do not like it if: | |
bc5fd6d3 MH |
65 | * |
66 | * - any path component of it begins with ".", or | |
67 | * - it has double dots "..", or | |
53a8555e | 68 | * - it has ASCII control characters, or |
cd377f45 JK |
69 | * - it has ":", "?", "[", "\", "^", "~", SP, or TAB anywhere, or |
70 | * - it has "*" anywhere unless REFNAME_REFSPEC_PATTERN is set, or | |
53a8555e JK |
71 | * - it ends with a "/", or |
72 | * - it ends with ".lock", or | |
73 | * - it contains a "@{" portion | |
bc5fd6d3 | 74 | */ |
cd377f45 | 75 | static int check_refname_component(const char *refname, int *flags) |
bc5fd6d3 MH |
76 | { |
77 | const char *cp; | |
78 | char last = '\0'; | |
79 | ||
80 | for (cp = refname; ; cp++) { | |
dde8a902 DT |
81 | int ch = *cp & 255; |
82 | unsigned char disp = refname_disposition[ch]; | |
83 | switch (disp) { | |
5e650228 | 84 | case 1: |
dde8a902 | 85 | goto out; |
5e650228 | 86 | case 2: |
dde8a902 DT |
87 | if (last == '.') |
88 | return -1; /* Refname contains "..". */ | |
89 | break; | |
5e650228 | 90 | case 3: |
dde8a902 DT |
91 | if (last == '@') |
92 | return -1; /* Refname contains "@{". */ | |
bc5fd6d3 | 93 | break; |
5e650228 | 94 | case 4: |
dde8a902 | 95 | return -1; |
cd377f45 JK |
96 | case 5: |
97 | if (!(*flags & REFNAME_REFSPEC_PATTERN)) | |
98 | return -1; /* refspec can't be a pattern */ | |
99 | ||
100 | /* | |
101 | * Unset the pattern flag so that we only accept | |
102 | * a single asterisk for one side of refspec. | |
103 | */ | |
104 | *flags &= ~ REFNAME_REFSPEC_PATTERN; | |
105 | break; | |
dde8a902 | 106 | } |
bc5fd6d3 MH |
107 | last = ch; |
108 | } | |
dde8a902 | 109 | out: |
bc5fd6d3 | 110 | if (cp == refname) |
dac529e4 | 111 | return 0; /* Component has zero length. */ |
f3cc52d8 JN |
112 | if (refname[0] == '.') |
113 | return -1; /* Component starts with '.'. */ | |
7108ad23 MH |
114 | if (cp - refname >= LOCK_SUFFIX_LEN && |
115 | !memcmp(cp - LOCK_SUFFIX_LEN, LOCK_SUFFIX, LOCK_SUFFIX_LEN)) | |
bc5fd6d3 MH |
116 | return -1; /* Refname ends with ".lock". */ |
117 | return cp - refname; | |
118 | } | |
119 | ||
5e650228 | 120 | int check_refname_format(const char *refname, int flags) |
bc5fd6d3 MH |
121 | { |
122 | int component_len, component_count = 0; | |
123 | ||
9ba89f48 FC |
124 | if (!strcmp(refname, "@")) |
125 | /* Refname is a single character '@'. */ | |
126 | return -1; | |
127 | ||
bc5fd6d3 MH |
128 | while (1) { |
129 | /* We are at the start of a path component. */ | |
cd377f45 JK |
130 | component_len = check_refname_component(refname, &flags); |
131 | if (component_len <= 0) | |
132 | return -1; | |
133 | ||
bc5fd6d3 MH |
134 | component_count++; |
135 | if (refname[component_len] == '\0') | |
136 | break; | |
137 | /* Skip to next component. */ | |
138 | refname += component_len + 1; | |
139 | } | |
140 | ||
141 | if (refname[component_len - 1] == '.') | |
142 | return -1; /* Refname ends with '.'. */ | |
143 | if (!(flags & REFNAME_ALLOW_ONELEVEL) && component_count < 2) | |
144 | return -1; /* Refname has only one component. */ | |
145 | return 0; | |
146 | } | |
147 | ||
4cb77009 | 148 | int refname_is_safe(const char *refname) |
d0f810f0 | 149 | { |
39950fef MH |
150 | const char *rest; |
151 | ||
152 | if (skip_prefix(refname, "refs/", &rest)) { | |
d0f810f0 RS |
153 | char *buf; |
154 | int result; | |
e40f3557 MH |
155 | size_t restlen = strlen(rest); |
156 | ||
157 | /* rest must not be empty, or start or end with "/" */ | |
158 | if (!restlen || *rest == '/' || rest[restlen - 1] == '/') | |
159 | return 0; | |
d0f810f0 | 160 | |
d0f810f0 RS |
161 | /* |
162 | * Does the refname try to escape refs/? | |
163 | * For example: refs/foo/../bar is safe but refs/foo/../../bar | |
164 | * is not. | |
165 | */ | |
e40f3557 MH |
166 | buf = xmallocz(restlen); |
167 | result = !normalize_path_copy(buf, rest) && !strcmp(buf, rest); | |
d0f810f0 RS |
168 | free(buf); |
169 | return result; | |
170 | } | |
35db25c6 MH |
171 | |
172 | do { | |
d0f810f0 RS |
173 | if (!isupper(*refname) && *refname != '_') |
174 | return 0; | |
175 | refname++; | |
35db25c6 | 176 | } while (*refname); |
d0f810f0 RS |
177 | return 1; |
178 | } | |
179 | ||
67be7c5a MH |
180 | /* |
181 | * Return true if refname, which has the specified oid and flags, can | |
182 | * be resolved to an object in the database. If the referred-to object | |
183 | * does not exist, emit a warning and return false. | |
184 | */ | |
185 | int ref_resolves_to_object(const char *refname, | |
186 | const struct object_id *oid, | |
187 | unsigned int flags) | |
188 | { | |
189 | if (flags & REF_ISBROKEN) | |
190 | return 0; | |
98374a07 | 191 | if (!has_object_file(oid)) { |
661558f0 | 192 | error(_("%s does not point to a valid object!"), refname); |
67be7c5a MH |
193 | return 0; |
194 | } | |
195 | return 1; | |
196 | } | |
197 | ||
7d2df051 NTND |
198 | char *refs_resolve_refdup(struct ref_store *refs, |
199 | const char *refname, int resolve_flags, | |
0f2dc722 | 200 | struct object_id *oid, int *flags) |
7d2df051 NTND |
201 | { |
202 | const char *result; | |
203 | ||
204 | result = refs_resolve_ref_unsafe(refs, refname, resolve_flags, | |
49e61479 | 205 | oid, flags); |
7d2df051 NTND |
206 | return xstrdup_or_null(result); |
207 | } | |
208 | ||
7bd9bcf3 | 209 | char *resolve_refdup(const char *refname, int resolve_flags, |
0f2dc722 | 210 | struct object_id *oid, int *flags) |
e1e22e37 | 211 | { |
23a3f0cb | 212 | return refs_resolve_refdup(get_main_ref_store(the_repository), |
7d2df051 | 213 | refname, resolve_flags, |
0f2dc722 | 214 | oid, flags); |
cddc4258 MH |
215 | } |
216 | ||
7bd9bcf3 MH |
217 | /* The argument to filter_refs */ |
218 | struct ref_filter { | |
219 | const char *pattern; | |
9ab9b5df | 220 | const char *prefix; |
7bd9bcf3 MH |
221 | each_ref_fn *fn; |
222 | void *cb_data; | |
223 | }; | |
432ad41e | 224 | |
7d2df051 | 225 | int refs_read_ref_full(struct ref_store *refs, const char *refname, |
34c290a6 | 226 | int resolve_flags, struct object_id *oid, int *flags) |
732134ed | 227 | { |
49e61479 | 228 | if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, oid, flags)) |
7bd9bcf3 MH |
229 | return 0; |
230 | return -1; | |
732134ed MH |
231 | } |
232 | ||
34c290a6 | 233 | int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags) |
7d2df051 | 234 | { |
23a3f0cb | 235 | return refs_read_ref_full(get_main_ref_store(the_repository), refname, |
34c290a6 | 236 | resolve_flags, oid, flags); |
7d2df051 NTND |
237 | } |
238 | ||
34c290a6 | 239 | int read_ref(const char *refname, struct object_id *oid) |
cddc4258 | 240 | { |
34c290a6 | 241 | return read_ref_full(refname, RESOLVE_REF_READING, oid, NULL); |
c774aab9 JP |
242 | } |
243 | ||
b3cd33d0 NTND |
244 | static int refs_ref_exists(struct ref_store *refs, const char *refname) |
245 | { | |
246 | return !!refs_resolve_ref_unsafe(refs, refname, RESOLVE_REF_READING, NULL, NULL); | |
247 | } | |
248 | ||
7bd9bcf3 | 249 | int ref_exists(const char *refname) |
bc5fd6d3 | 250 | { |
b3cd33d0 | 251 | return refs_ref_exists(get_main_ref_store(the_repository), refname); |
bc5fd6d3 MH |
252 | } |
253 | ||
65516f58 RA |
254 | static int match_ref_pattern(const char *refname, |
255 | const struct string_list_item *item) | |
256 | { | |
257 | int matched = 0; | |
258 | if (item->util == NULL) { | |
259 | if (!wildmatch(item->string, refname, 0)) | |
260 | matched = 1; | |
261 | } else { | |
262 | const char *rest; | |
263 | if (skip_prefix(refname, item->string, &rest) && | |
264 | (!*rest || *rest == '/')) | |
265 | matched = 1; | |
266 | } | |
267 | return matched; | |
268 | } | |
269 | ||
270 | int ref_filter_match(const char *refname, | |
271 | const struct string_list *include_patterns, | |
272 | const struct string_list *exclude_patterns) | |
273 | { | |
274 | struct string_list_item *item; | |
275 | ||
276 | if (exclude_patterns && exclude_patterns->nr) { | |
277 | for_each_string_list_item(item, exclude_patterns) { | |
278 | if (match_ref_pattern(refname, item)) | |
279 | return 0; | |
280 | } | |
281 | } | |
282 | ||
283 | if (include_patterns && include_patterns->nr) { | |
284 | int found = 0; | |
285 | for_each_string_list_item(item, include_patterns) { | |
286 | if (match_ref_pattern(refname, item)) { | |
287 | found = 1; | |
288 | break; | |
289 | } | |
290 | } | |
291 | ||
292 | if (!found) | |
293 | return 0; | |
294 | } | |
295 | return 1; | |
296 | } | |
297 | ||
7bd9bcf3 MH |
298 | static int filter_refs(const char *refname, const struct object_id *oid, |
299 | int flags, void *data) | |
432ad41e | 300 | { |
7bd9bcf3 MH |
301 | struct ref_filter *filter = (struct ref_filter *)data; |
302 | ||
55d34269 | 303 | if (wildmatch(filter->pattern, refname, 0)) |
7bd9bcf3 | 304 | return 0; |
9ab9b5df RA |
305 | if (filter->prefix) |
306 | skip_prefix(refname, filter->prefix, &refname); | |
7bd9bcf3 | 307 | return filter->fn(refname, oid, flags, filter->cb_data); |
432ad41e MH |
308 | } |
309 | ||
ac2ed0d7 | 310 | enum peel_status peel_object(const struct object_id *name, struct object_id *oid) |
c774aab9 | 311 | { |
ac2ed0d7 | 312 | struct object *o = lookup_unknown_object(name->hash); |
c774aab9 | 313 | |
7bd9bcf3 | 314 | if (o->type == OBJ_NONE) { |
0df8e965 | 315 | int type = oid_object_info(the_repository, name, NULL); |
1268dfac | 316 | if (type < 0 || !object_as_type(the_repository, o, type, 0)) |
7bd9bcf3 MH |
317 | return PEEL_INVALID; |
318 | } | |
bc5fd6d3 | 319 | |
7bd9bcf3 MH |
320 | if (o->type != OBJ_TAG) |
321 | return PEEL_NON_TAG; | |
e1980c9d | 322 | |
7bd9bcf3 MH |
323 | o = deref_tag_noverify(o); |
324 | if (!o) | |
325 | return PEEL_INVALID; | |
326 | ||
ac2ed0d7 | 327 | oidcpy(oid, &o->oid); |
7bd9bcf3 | 328 | return PEEL_PEELED; |
e1980c9d JH |
329 | } |
330 | ||
7bd9bcf3 MH |
331 | struct warn_if_dangling_data { |
332 | FILE *fp; | |
333 | const char *refname; | |
334 | const struct string_list *refnames; | |
335 | const char *msg_fmt; | |
336 | }; | |
bc5fd6d3 | 337 | |
7bd9bcf3 MH |
338 | static int warn_if_dangling_symref(const char *refname, const struct object_id *oid, |
339 | int flags, void *cb_data) | |
340 | { | |
341 | struct warn_if_dangling_data *d = cb_data; | |
342 | const char *resolves_to; | |
bc5fd6d3 | 343 | |
7bd9bcf3 MH |
344 | if (!(flags & REF_ISSYMREF)) |
345 | return 0; | |
bc5fd6d3 | 346 | |
744c040b | 347 | resolves_to = resolve_ref_unsafe(refname, 0, NULL, NULL); |
7bd9bcf3 MH |
348 | if (!resolves_to |
349 | || (d->refname | |
350 | ? strcmp(resolves_to, d->refname) | |
351 | : !string_list_has_string(d->refnames, resolves_to))) { | |
352 | return 0; | |
353 | } | |
bc5fd6d3 | 354 | |
7bd9bcf3 MH |
355 | fprintf(d->fp, d->msg_fmt, refname); |
356 | fputc('\n', d->fp); | |
357 | return 0; | |
bc5fd6d3 MH |
358 | } |
359 | ||
7bd9bcf3 | 360 | void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname) |
f348ac92 | 361 | { |
7bd9bcf3 MH |
362 | struct warn_if_dangling_data data; |
363 | ||
364 | data.fp = fp; | |
365 | data.refname = refname; | |
366 | data.refnames = NULL; | |
367 | data.msg_fmt = msg_fmt; | |
368 | for_each_rawref(warn_if_dangling_symref, &data); | |
f348ac92 MH |
369 | } |
370 | ||
7bd9bcf3 | 371 | void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames) |
432ad41e | 372 | { |
7bd9bcf3 | 373 | struct warn_if_dangling_data data; |
432ad41e | 374 | |
7bd9bcf3 MH |
375 | data.fp = fp; |
376 | data.refname = NULL; | |
377 | data.refnames = refnames; | |
378 | data.msg_fmt = msg_fmt; | |
379 | for_each_rawref(warn_if_dangling_symref, &data); | |
432ad41e MH |
380 | } |
381 | ||
7d2df051 NTND |
382 | int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
383 | { | |
384 | return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data); | |
385 | } | |
386 | ||
7bd9bcf3 | 387 | int for_each_tag_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 388 | { |
23a3f0cb | 389 | return refs_for_each_tag_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
390 | } |
391 | ||
7d2df051 NTND |
392 | int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
393 | { | |
394 | return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data); | |
432ad41e MH |
395 | } |
396 | ||
7bd9bcf3 | 397 | int for_each_branch_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 398 | { |
23a3f0cb | 399 | return refs_for_each_branch_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
400 | } |
401 | ||
7d2df051 NTND |
402 | int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
403 | { | |
404 | return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data); | |
202a56a9 | 405 | } |
432ad41e | 406 | |
7bd9bcf3 | 407 | int for_each_remote_ref(each_ref_fn fn, void *cb_data) |
e9c4c111 | 408 | { |
23a3f0cb | 409 | return refs_for_each_remote_ref(get_main_ref_store(the_repository), fn, cb_data); |
202a56a9 MH |
410 | } |
411 | ||
7bd9bcf3 MH |
412 | int head_ref_namespaced(each_ref_fn fn, void *cb_data) |
413 | { | |
414 | struct strbuf buf = STRBUF_INIT; | |
415 | int ret = 0; | |
416 | struct object_id oid; | |
417 | int flag; | |
c774aab9 | 418 | |
7bd9bcf3 | 419 | strbuf_addf(&buf, "%sHEAD", get_git_namespace()); |
34c290a6 | 420 | if (!read_ref_full(buf.buf, RESOLVE_REF_READING, &oid, &flag)) |
7bd9bcf3 MH |
421 | ret = fn(buf.buf, &oid, flag, cb_data); |
422 | strbuf_release(&buf); | |
c774aab9 | 423 | |
7bd9bcf3 | 424 | return ret; |
e9c4c111 | 425 | } |
c774aab9 | 426 | |
65516f58 RA |
427 | void normalize_glob_ref(struct string_list_item *item, const char *prefix, |
428 | const char *pattern) | |
429 | { | |
430 | struct strbuf normalized_pattern = STRBUF_INIT; | |
431 | ||
432 | if (*pattern == '/') | |
433 | BUG("pattern must not start with '/'"); | |
434 | ||
435 | if (prefix) { | |
436 | strbuf_addstr(&normalized_pattern, prefix); | |
437 | } | |
438 | else if (!starts_with(pattern, "refs/")) | |
439 | strbuf_addstr(&normalized_pattern, "refs/"); | |
440 | strbuf_addstr(&normalized_pattern, pattern); | |
441 | strbuf_strip_suffix(&normalized_pattern, "/"); | |
442 | ||
443 | item->string = strbuf_detach(&normalized_pattern, NULL); | |
444 | item->util = has_glob_specials(pattern) ? NULL : item->string; | |
445 | strbuf_release(&normalized_pattern); | |
446 | } | |
447 | ||
7bd9bcf3 MH |
448 | int for_each_glob_ref_in(each_ref_fn fn, const char *pattern, |
449 | const char *prefix, void *cb_data) | |
662428f4 | 450 | { |
7bd9bcf3 MH |
451 | struct strbuf real_pattern = STRBUF_INIT; |
452 | struct ref_filter filter; | |
453 | int ret; | |
d08bae7e | 454 | |
59556548 | 455 | if (!prefix && !starts_with(pattern, "refs/")) |
d08bae7e | 456 | strbuf_addstr(&real_pattern, "refs/"); |
b09fe971 IL |
457 | else if (prefix) |
458 | strbuf_addstr(&real_pattern, prefix); | |
d08bae7e IL |
459 | strbuf_addstr(&real_pattern, pattern); |
460 | ||
894a9d33 | 461 | if (!has_glob_specials(pattern)) { |
9517e6b8 | 462 | /* Append implied '/' '*' if not present. */ |
00b6c178 | 463 | strbuf_complete(&real_pattern, '/'); |
d08bae7e IL |
464 | /* No need to check for '*', there is none. */ |
465 | strbuf_addch(&real_pattern, '*'); | |
466 | } | |
467 | ||
468 | filter.pattern = real_pattern.buf; | |
9ab9b5df | 469 | filter.prefix = prefix; |
d08bae7e IL |
470 | filter.fn = fn; |
471 | filter.cb_data = cb_data; | |
472 | ret = for_each_ref(filter_refs, &filter); | |
473 | ||
474 | strbuf_release(&real_pattern); | |
475 | return ret; | |
476 | } | |
477 | ||
b09fe971 IL |
478 | int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data) |
479 | { | |
480 | return for_each_glob_ref_in(fn, pattern, NULL, cb_data); | |
481 | } | |
482 | ||
4577e483 | 483 | const char *prettify_refname(const char *name) |
a9c37a72 | 484 | { |
3e5b36c6 SG |
485 | if (skip_prefix(name, "refs/heads/", &name) || |
486 | skip_prefix(name, "refs/tags/", &name) || | |
487 | skip_prefix(name, "refs/remotes/", &name)) | |
488 | ; /* nothing */ | |
489 | return name; | |
a9c37a72 DB |
490 | } |
491 | ||
54457fe5 | 492 | static const char *ref_rev_parse_rules[] = { |
79803322 SP |
493 | "%.*s", |
494 | "refs/%.*s", | |
495 | "refs/tags/%.*s", | |
496 | "refs/heads/%.*s", | |
497 | "refs/remotes/%.*s", | |
498 | "refs/remotes/%.*s/HEAD", | |
499 | NULL | |
500 | }; | |
501 | ||
60650a48 JH |
502 | #define NUM_REV_PARSE_RULES (ARRAY_SIZE(ref_rev_parse_rules) - 1) |
503 | ||
504 | /* | |
505 | * Is it possible that the caller meant full_name with abbrev_name? | |
506 | * If so return a non-zero value to signal "yes"; the magnitude of | |
507 | * the returned value gives the precedence used for disambiguation. | |
508 | * | |
509 | * If abbrev_name cannot mean full_name, return 0. | |
510 | */ | |
54457fe5 | 511 | int refname_match(const char *abbrev_name, const char *full_name) |
79803322 SP |
512 | { |
513 | const char **p; | |
514 | const int abbrev_name_len = strlen(abbrev_name); | |
60650a48 | 515 | const int num_rules = NUM_REV_PARSE_RULES; |
79803322 | 516 | |
60650a48 JH |
517 | for (p = ref_rev_parse_rules; *p; p++) |
518 | if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) | |
519 | return &ref_rev_parse_rules[num_rules] - p; | |
79803322 SP |
520 | |
521 | return 0; | |
522 | } | |
523 | ||
b4be7410 BW |
524 | /* |
525 | * Given a 'prefix' expand it by the rules in 'ref_rev_parse_rules' and add | |
526 | * the results to 'prefixes' | |
527 | */ | |
528 | void expand_ref_prefix(struct argv_array *prefixes, const char *prefix) | |
529 | { | |
530 | const char **p; | |
531 | int len = strlen(prefix); | |
532 | ||
533 | for (p = ref_rev_parse_rules; *p; p++) | |
534 | argv_array_pushf(prefixes, *p, len, prefix); | |
535 | } | |
536 | ||
ff74f7f1 JH |
537 | /* |
538 | * *string and *len will only be substituted, and *string returned (for | |
539 | * later free()ing) if the string passed in is a magic short-hand form | |
540 | * to name a branch. | |
541 | */ | |
8f56e9d4 NTND |
542 | static char *substitute_branch_name(struct repository *r, |
543 | const char **string, int *len) | |
ff74f7f1 JH |
544 | { |
545 | struct strbuf buf = STRBUF_INIT; | |
8f56e9d4 | 546 | int ret = repo_interpret_branch_name(r, *string, *len, &buf, 0); |
ff74f7f1 JH |
547 | |
548 | if (ret == *len) { | |
549 | size_t size; | |
550 | *string = strbuf_detach(&buf, &size); | |
551 | *len = size; | |
552 | return (char *)*string; | |
553 | } | |
554 | ||
555 | return NULL; | |
556 | } | |
557 | ||
cca5fa64 | 558 | int dwim_ref(const char *str, int len, struct object_id *oid, char **ref) |
ff74f7f1 | 559 | { |
8f56e9d4 | 560 | char *last_branch = substitute_branch_name(the_repository, &str, &len); |
cca5fa64 | 561 | int refs_found = expand_ref(str, len, oid, ref); |
41da7111 NTND |
562 | free(last_branch); |
563 | return refs_found; | |
564 | } | |
565 | ||
cca5fa64 | 566 | int expand_ref(const char *str, int len, struct object_id *oid, char **ref) |
41da7111 | 567 | { |
ff74f7f1 JH |
568 | const char **p, *r; |
569 | int refs_found = 0; | |
6cd4a898 | 570 | struct strbuf fullref = STRBUF_INIT; |
ff74f7f1 JH |
571 | |
572 | *ref = NULL; | |
573 | for (p = ref_rev_parse_rules; *p; p++) { | |
cca5fa64 | 574 | struct object_id oid_from_ref; |
575 | struct object_id *this_result; | |
ff74f7f1 JH |
576 | int flag; |
577 | ||
cca5fa64 | 578 | this_result = refs_found ? &oid_from_ref : oid; |
6cd4a898 JK |
579 | strbuf_reset(&fullref); |
580 | strbuf_addf(&fullref, *p, len, str); | |
581 | r = resolve_ref_unsafe(fullref.buf, RESOLVE_REF_READING, | |
49e61479 | 582 | this_result, &flag); |
ff74f7f1 JH |
583 | if (r) { |
584 | if (!refs_found++) | |
585 | *ref = xstrdup(r); | |
586 | if (!warn_ambiguous_refs) | |
587 | break; | |
6cd4a898 | 588 | } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) { |
661558f0 | 589 | warning(_("ignoring dangling symref %s"), fullref.buf); |
6cd4a898 | 590 | } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) { |
661558f0 | 591 | warning(_("ignoring broken ref %s"), fullref.buf); |
55956350 | 592 | } |
ff74f7f1 | 593 | } |
6cd4a898 | 594 | strbuf_release(&fullref); |
ff74f7f1 JH |
595 | return refs_found; |
596 | } | |
597 | ||
334dc52f | 598 | int dwim_log(const char *str, int len, struct object_id *oid, char **log) |
ff74f7f1 | 599 | { |
8f56e9d4 | 600 | char *last_branch = substitute_branch_name(the_repository, &str, &len); |
ff74f7f1 JH |
601 | const char **p; |
602 | int logs_found = 0; | |
6cd4a898 | 603 | struct strbuf path = STRBUF_INIT; |
ff74f7f1 JH |
604 | |
605 | *log = NULL; | |
606 | for (p = ref_rev_parse_rules; *p; p++) { | |
334dc52f | 607 | struct object_id hash; |
ff74f7f1 JH |
608 | const char *ref, *it; |
609 | ||
6cd4a898 JK |
610 | strbuf_reset(&path); |
611 | strbuf_addf(&path, *p, len, str); | |
612 | ref = resolve_ref_unsafe(path.buf, RESOLVE_REF_READING, | |
49e61479 | 613 | &hash, NULL); |
ff74f7f1 JH |
614 | if (!ref) |
615 | continue; | |
6cd4a898 JK |
616 | if (reflog_exists(path.buf)) |
617 | it = path.buf; | |
618 | else if (strcmp(ref, path.buf) && reflog_exists(ref)) | |
ff74f7f1 JH |
619 | it = ref; |
620 | else | |
621 | continue; | |
622 | if (!logs_found++) { | |
623 | *log = xstrdup(it); | |
334dc52f | 624 | oidcpy(oid, &hash); |
ff74f7f1 | 625 | } |
7bd9bcf3 MH |
626 | if (!warn_ambiguous_refs) |
627 | break; | |
c0277d15 | 628 | } |
6cd4a898 | 629 | strbuf_release(&path); |
7bd9bcf3 MH |
630 | free(last_branch); |
631 | return logs_found; | |
2ddb5d17 BK |
632 | } |
633 | ||
266b1827 DT |
634 | static int is_per_worktree_ref(const char *refname) |
635 | { | |
ce414b33 | 636 | return !strcmp(refname, "HEAD") || |
8aff1a9c | 637 | starts_with(refname, "refs/worktree/") || |
a9be29c9 JS |
638 | starts_with(refname, "refs/bisect/") || |
639 | starts_with(refname, "refs/rewritten/"); | |
266b1827 DT |
640 | } |
641 | ||
642 | static int is_pseudoref_syntax(const char *refname) | |
643 | { | |
644 | const char *c; | |
645 | ||
646 | for (c = refname; *c; c++) { | |
647 | if (!isupper(*c) && *c != '-' && *c != '_') | |
648 | return 0; | |
649 | } | |
650 | ||
651 | return 1; | |
652 | } | |
653 | ||
3a3b9d8c NTND |
654 | static int is_main_pseudoref_syntax(const char *refname) |
655 | { | |
656 | return skip_prefix(refname, "main-worktree/", &refname) && | |
657 | *refname && | |
658 | is_pseudoref_syntax(refname); | |
659 | } | |
660 | ||
661 | static int is_other_pseudoref_syntax(const char *refname) | |
662 | { | |
663 | if (!skip_prefix(refname, "worktrees/", &refname)) | |
664 | return 0; | |
665 | refname = strchr(refname, '/'); | |
666 | if (!refname || !refname[1]) | |
667 | return 0; | |
668 | return is_pseudoref_syntax(refname + 1); | |
669 | } | |
670 | ||
266b1827 DT |
671 | enum ref_type ref_type(const char *refname) |
672 | { | |
673 | if (is_per_worktree_ref(refname)) | |
674 | return REF_TYPE_PER_WORKTREE; | |
675 | if (is_pseudoref_syntax(refname)) | |
676 | return REF_TYPE_PSEUDOREF; | |
3a3b9d8c NTND |
677 | if (is_main_pseudoref_syntax(refname)) |
678 | return REF_TYPE_MAIN_PSEUDOREF; | |
679 | if (is_other_pseudoref_syntax(refname)) | |
680 | return REF_TYPE_OTHER_PSEUDOREF; | |
5c79f74f | 681 | return REF_TYPE_NORMAL; |
266b1827 DT |
682 | } |
683 | ||
4ff0f01c MH |
684 | long get_files_ref_lock_timeout_ms(void) |
685 | { | |
686 | static int configured = 0; | |
687 | ||
688 | /* The default timeout is 100 ms: */ | |
689 | static int timeout_ms = 100; | |
690 | ||
691 | if (!configured) { | |
692 | git_config_get_int("core.filesreflocktimeout", &timeout_ms); | |
693 | configured = 1; | |
694 | } | |
695 | ||
696 | return timeout_ms; | |
697 | } | |
698 | ||
ae077771 | 699 | static int write_pseudoref(const char *pseudoref, const struct object_id *oid, |
700 | const struct object_id *old_oid, struct strbuf *err) | |
74ec19d4 DT |
701 | { |
702 | const char *filename; | |
703 | int fd; | |
01084515 | 704 | struct lock_file lock = LOCK_INIT; |
74ec19d4 DT |
705 | struct strbuf buf = STRBUF_INIT; |
706 | int ret = -1; | |
707 | ||
6ee18216 | 708 | if (!oid) |
709 | return 0; | |
710 | ||
ae077771 | 711 | strbuf_addf(&buf, "%s\n", oid_to_hex(oid)); |
74ec19d4 DT |
712 | |
713 | filename = git_path("%s", pseudoref); | |
01084515 | 714 | fd = hold_lock_file_for_update_timeout(&lock, filename, 0, |
4ff0f01c | 715 | get_files_ref_lock_timeout_ms()); |
74ec19d4 | 716 | if (fd < 0) { |
661558f0 | 717 | strbuf_addf(err, _("could not open '%s' for writing: %s"), |
74ec19d4 | 718 | filename, strerror(errno)); |
aeb014f6 | 719 | goto done; |
74ec19d4 DT |
720 | } |
721 | ||
ae077771 | 722 | if (old_oid) { |
723 | struct object_id actual_old_oid; | |
2c3aed13 | 724 | |
db0210d4 MÅ |
725 | if (read_ref(pseudoref, &actual_old_oid)) { |
726 | if (!is_null_oid(old_oid)) { | |
661558f0 | 727 | strbuf_addf(err, _("could not read ref '%s'"), |
db0210d4 MÅ |
728 | pseudoref); |
729 | rollback_lock_file(&lock); | |
730 | goto done; | |
731 | } | |
732 | } else if (is_null_oid(old_oid)) { | |
661558f0 | 733 | strbuf_addf(err, _("ref '%s' already exists"), |
db0210d4 MÅ |
734 | pseudoref); |
735 | rollback_lock_file(&lock); | |
736 | goto done; | |
9001dc2a | 737 | } else if (!oideq(&actual_old_oid, old_oid)) { |
661558f0 | 738 | strbuf_addf(err, _("unexpected object ID when writing '%s'"), |
c0bdd658 | 739 | pseudoref); |
74ec19d4 DT |
740 | rollback_lock_file(&lock); |
741 | goto done; | |
742 | } | |
743 | } | |
744 | ||
06f46f23 | 745 | if (write_in_full(fd, buf.buf, buf.len) < 0) { |
661558f0 | 746 | strbuf_addf(err, _("could not write to '%s'"), filename); |
74ec19d4 DT |
747 | rollback_lock_file(&lock); |
748 | goto done; | |
749 | } | |
750 | ||
751 | commit_lock_file(&lock); | |
752 | ret = 0; | |
753 | done: | |
754 | strbuf_release(&buf); | |
755 | return ret; | |
756 | } | |
757 | ||
2616a5e5 | 758 | static int delete_pseudoref(const char *pseudoref, const struct object_id *old_oid) |
74ec19d4 | 759 | { |
74ec19d4 DT |
760 | const char *filename; |
761 | ||
762 | filename = git_path("%s", pseudoref); | |
763 | ||
2616a5e5 | 764 | if (old_oid && !is_null_oid(old_oid)) { |
3c6fad4a | 765 | struct lock_file lock = LOCK_INIT; |
74ec19d4 | 766 | int fd; |
2616a5e5 | 767 | struct object_id actual_old_oid; |
74ec19d4 | 768 | |
4ff0f01c | 769 | fd = hold_lock_file_for_update_timeout( |
3c6fad4a | 770 | &lock, filename, 0, |
4ff0f01c | 771 | get_files_ref_lock_timeout_ms()); |
3c6fad4a MÅ |
772 | if (fd < 0) { |
773 | error_errno(_("could not open '%s' for writing"), | |
774 | filename); | |
775 | return -1; | |
776 | } | |
34c290a6 | 777 | if (read_ref(pseudoref, &actual_old_oid)) |
661558f0 | 778 | die(_("could not read ref '%s'"), pseudoref); |
9001dc2a | 779 | if (!oideq(&actual_old_oid, old_oid)) { |
661558f0 | 780 | error(_("unexpected object ID when deleting '%s'"), |
c0bdd658 | 781 | pseudoref); |
74ec19d4 DT |
782 | rollback_lock_file(&lock); |
783 | return -1; | |
a4c653df | 784 | } |
74ec19d4 DT |
785 | |
786 | unlink(filename); | |
787 | rollback_lock_file(&lock); | |
788 | } else { | |
789 | unlink(filename); | |
4bd18c43 | 790 | } |
a4c653df | 791 | |
4bd18c43 | 792 | return 0; |
95fc7512 | 793 | } |
d556fae2 | 794 | |
c0fe4e8b NTND |
795 | int refs_delete_ref(struct ref_store *refs, const char *msg, |
796 | const char *refname, | |
2616a5e5 | 797 | const struct object_id *old_oid, |
c0fe4e8b | 798 | unsigned int flags) |
41b625b0 | 799 | { |
7521cc46 | 800 | struct ref_transaction *transaction; |
a4c653df | 801 | struct strbuf err = STRBUF_INIT; |
8b5157e4 | 802 | |
c0fe4e8b | 803 | if (ref_type(refname) == REF_TYPE_PSEUDOREF) { |
23a3f0cb | 804 | assert(refs == get_main_ref_store(the_repository)); |
2616a5e5 | 805 | return delete_pseudoref(refname, old_oid); |
c0fe4e8b | 806 | } |
d48744d1 | 807 | |
c0fe4e8b | 808 | transaction = ref_store_transaction_begin(refs, &err); |
7521cc46 | 809 | if (!transaction || |
89f3bbdd | 810 | ref_transaction_delete(transaction, refname, old_oid, |
755b49ae | 811 | flags, msg, &err) || |
db7516ab | 812 | ref_transaction_commit(transaction, &err)) { |
7521cc46 RS |
813 | error("%s", err.buf); |
814 | ref_transaction_free(transaction); | |
815 | strbuf_release(&err); | |
c0277d15 | 816 | return 1; |
41b625b0 | 817 | } |
7bd9bcf3 MH |
818 | ref_transaction_free(transaction); |
819 | strbuf_release(&err); | |
b531394d BC |
820 | return 0; |
821 | } | |
41b625b0 | 822 | |
c0fe4e8b | 823 | int delete_ref(const char *msg, const char *refname, |
2616a5e5 | 824 | const struct object_id *old_oid, unsigned int flags) |
c0fe4e8b | 825 | { |
23a3f0cb | 826 | return refs_delete_ref(get_main_ref_store(the_repository), msg, refname, |
2616a5e5 | 827 | old_oid, flags); |
c0fe4e8b NTND |
828 | } |
829 | ||
80a6c207 | 830 | void copy_reflog_msg(struct strbuf *sb, const char *msg) |
0ec29a47 | 831 | { |
0ec29a47 JH |
832 | char c; |
833 | int wasspace = 1; | |
8b5157e4 | 834 | |
80a6c207 | 835 | strbuf_addch(sb, '\t'); |
0ec29a47 JH |
836 | while ((c = *msg++)) { |
837 | if (wasspace && isspace(c)) | |
838 | continue; | |
839 | wasspace = isspace(c); | |
840 | if (wasspace) | |
841 | c = ' '; | |
80a6c207 | 842 | strbuf_addch(sb, c); |
a4c653df | 843 | } |
80a6c207 | 844 | strbuf_rtrim(sb); |
0ec29a47 | 845 | } |
8b5157e4 | 846 | |
4cb77009 | 847 | int should_autocreate_reflog(const char *refname) |
4e2bef57 | 848 | { |
341fb286 CW |
849 | switch (log_all_ref_updates) { |
850 | case LOG_REFS_ALWAYS: | |
851 | return 1; | |
852 | case LOG_REFS_NORMAL: | |
853 | return starts_with(refname, "refs/heads/") || | |
854 | starts_with(refname, "refs/remotes/") || | |
855 | starts_with(refname, "refs/notes/") || | |
856 | !strcmp(refname, "HEAD"); | |
857 | default: | |
4e2bef57 | 858 | return 0; |
341fb286 | 859 | } |
4e2bef57 DT |
860 | } |
861 | ||
e7e0f26e | 862 | int is_branch(const char *refname) |
c3b0dec5 | 863 | { |
59556548 | 864 | return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/"); |
41b625b0 NP |
865 | } |
866 | ||
4207ed28 RS |
867 | struct read_ref_at_cb { |
868 | const char *refname; | |
dddbad72 | 869 | timestamp_t at_time; |
4207ed28 RS |
870 | int cnt; |
871 | int reccnt; | |
8eb36d94 | 872 | struct object_id *oid; |
4207ed28 RS |
873 | int found_it; |
874 | ||
8eb36d94 | 875 | struct object_id ooid; |
876 | struct object_id noid; | |
4207ed28 | 877 | int tz; |
dddbad72 | 878 | timestamp_t date; |
4207ed28 | 879 | char **msg; |
dddbad72 | 880 | timestamp_t *cutoff_time; |
4207ed28 RS |
881 | int *cutoff_tz; |
882 | int *cutoff_cnt; | |
883 | }; | |
884 | ||
9461d272 | 885 | static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 886 | const char *email, timestamp_t timestamp, int tz, |
4207ed28 RS |
887 | const char *message, void *cb_data) |
888 | { | |
889 | struct read_ref_at_cb *cb = cb_data; | |
890 | ||
891 | cb->reccnt++; | |
892 | cb->tz = tz; | |
893 | cb->date = timestamp; | |
894 | ||
895 | if (timestamp <= cb->at_time || cb->cnt == 0) { | |
896 | if (cb->msg) | |
897 | *cb->msg = xstrdup(message); | |
898 | if (cb->cutoff_time) | |
899 | *cb->cutoff_time = timestamp; | |
900 | if (cb->cutoff_tz) | |
901 | *cb->cutoff_tz = tz; | |
902 | if (cb->cutoff_cnt) | |
903 | *cb->cutoff_cnt = cb->reccnt - 1; | |
904 | /* | |
78fb4579 | 905 | * we have not yet updated cb->[n|o]oid so they still |
4207ed28 RS |
906 | * hold the values for the previous record. |
907 | */ | |
8eb36d94 | 908 | if (!is_null_oid(&cb->ooid)) { |
909 | oidcpy(cb->oid, noid); | |
9001dc2a | 910 | if (!oideq(&cb->ooid, noid)) |
661558f0 | 911 | warning(_("log for ref %s has gap after %s"), |
a5481a6c | 912 | cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822))); |
4207ed28 RS |
913 | } |
914 | else if (cb->date == cb->at_time) | |
8eb36d94 | 915 | oidcpy(cb->oid, noid); |
9001dc2a | 916 | else if (!oideq(noid, cb->oid)) |
661558f0 | 917 | warning(_("log for ref %s unexpectedly ended on %s"), |
4207ed28 | 918 | cb->refname, show_date(cb->date, cb->tz, |
a5481a6c | 919 | DATE_MODE(RFC2822))); |
8eb36d94 | 920 | oidcpy(&cb->ooid, ooid); |
921 | oidcpy(&cb->noid, noid); | |
4207ed28 RS |
922 | cb->found_it = 1; |
923 | return 1; | |
924 | } | |
8eb36d94 | 925 | oidcpy(&cb->ooid, ooid); |
926 | oidcpy(&cb->noid, noid); | |
4207ed28 RS |
927 | if (cb->cnt > 0) |
928 | cb->cnt--; | |
929 | return 0; | |
930 | } | |
931 | ||
9461d272 | 932 | static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 933 | const char *email, timestamp_t timestamp, |
4207ed28 RS |
934 | int tz, const char *message, void *cb_data) |
935 | { | |
936 | struct read_ref_at_cb *cb = cb_data; | |
937 | ||
938 | if (cb->msg) | |
939 | *cb->msg = xstrdup(message); | |
940 | if (cb->cutoff_time) | |
941 | *cb->cutoff_time = timestamp; | |
942 | if (cb->cutoff_tz) | |
943 | *cb->cutoff_tz = tz; | |
944 | if (cb->cutoff_cnt) | |
945 | *cb->cutoff_cnt = cb->reccnt; | |
8eb36d94 | 946 | oidcpy(cb->oid, ooid); |
947 | if (is_null_oid(cb->oid)) | |
948 | oidcpy(cb->oid, noid); | |
4207ed28 RS |
949 | /* We just want the first entry */ |
950 | return 1; | |
16d7cc90 JH |
951 | } |
952 | ||
dddbad72 | 953 | int read_ref_at(const char *refname, unsigned int flags, timestamp_t at_time, int cnt, |
8eb36d94 | 954 | struct object_id *oid, char **msg, |
dddbad72 | 955 | timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt) |
d556fae2 | 956 | { |
4207ed28 | 957 | struct read_ref_at_cb cb; |
d556fae2 | 958 | |
4207ed28 RS |
959 | memset(&cb, 0, sizeof(cb)); |
960 | cb.refname = refname; | |
961 | cb.at_time = at_time; | |
962 | cb.cnt = cnt; | |
963 | cb.msg = msg; | |
964 | cb.cutoff_time = cutoff_time; | |
965 | cb.cutoff_tz = cutoff_tz; | |
966 | cb.cutoff_cnt = cutoff_cnt; | |
8eb36d94 | 967 | cb.oid = oid; |
4207ed28 RS |
968 | |
969 | for_each_reflog_ent_reverse(refname, read_ref_at_ent, &cb); | |
970 | ||
c41a87dd | 971 | if (!cb.reccnt) { |
321c89bf | 972 | if (flags & GET_OID_QUIETLY) |
c41a87dd DA |
973 | exit(128); |
974 | else | |
661558f0 | 975 | die(_("log for %s is empty"), refname); |
c41a87dd | 976 | } |
4207ed28 RS |
977 | if (cb.found_it) |
978 | return 0; | |
979 | ||
980 | for_each_reflog_ent(refname, read_ref_at_ent_oldest, &cb); | |
d556fae2 | 981 | |
16d7cc90 | 982 | return 1; |
d556fae2 | 983 | } |
2ff81662 | 984 | |
c0fe4e8b NTND |
985 | struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs, |
986 | struct strbuf *err) | |
caa4046c | 987 | { |
c0fe4e8b | 988 | struct ref_transaction *tr; |
5a603b04 JN |
989 | assert(err); |
990 | ||
c0fe4e8b NTND |
991 | tr = xcalloc(1, sizeof(struct ref_transaction)); |
992 | tr->ref_store = refs; | |
993 | return tr; | |
994 | } | |
995 | ||
996 | struct ref_transaction *ref_transaction_begin(struct strbuf *err) | |
997 | { | |
23a3f0cb | 998 | return ref_store_transaction_begin(get_main_ref_store(the_repository), err); |
caa4046c MH |
999 | } |
1000 | ||
026bd1d3 | 1001 | void ref_transaction_free(struct ref_transaction *transaction) |
caa4046c | 1002 | { |
43a2dfde | 1003 | size_t i; |
caa4046c | 1004 | |
1b07255c RS |
1005 | if (!transaction) |
1006 | return; | |
1007 | ||
30173b88 MH |
1008 | switch (transaction->state) { |
1009 | case REF_TRANSACTION_OPEN: | |
1010 | case REF_TRANSACTION_CLOSED: | |
1011 | /* OK */ | |
1012 | break; | |
1013 | case REF_TRANSACTION_PREPARED: | |
033abf97 | 1014 | BUG("free called on a prepared reference transaction"); |
30173b88 MH |
1015 | break; |
1016 | default: | |
033abf97 | 1017 | BUG("unexpected reference transaction state"); |
30173b88 MH |
1018 | break; |
1019 | } | |
1020 | ||
db7516ab RS |
1021 | for (i = 0; i < transaction->nr; i++) { |
1022 | free(transaction->updates[i]->msg); | |
88615910 | 1023 | free(transaction->updates[i]); |
db7516ab | 1024 | } |
caa4046c MH |
1025 | free(transaction->updates); |
1026 | free(transaction); | |
1027 | } | |
1028 | ||
71564516 MH |
1029 | struct ref_update *ref_transaction_add_update( |
1030 | struct ref_transaction *transaction, | |
1031 | const char *refname, unsigned int flags, | |
89f3bbdd | 1032 | const struct object_id *new_oid, |
1033 | const struct object_id *old_oid, | |
71564516 | 1034 | const char *msg) |
caa4046c | 1035 | { |
96ffc06f | 1036 | struct ref_update *update; |
71564516 MH |
1037 | |
1038 | if (transaction->state != REF_TRANSACTION_OPEN) | |
033abf97 | 1039 | BUG("update called for transaction that is not open"); |
71564516 | 1040 | |
96ffc06f | 1041 | FLEX_ALLOC_STR(update, refname, refname); |
caa4046c MH |
1042 | ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc); |
1043 | transaction->updates[transaction->nr++] = update; | |
71564516 MH |
1044 | |
1045 | update->flags = flags; | |
1046 | ||
1047 | if (flags & REF_HAVE_NEW) | |
89f3bbdd | 1048 | oidcpy(&update->new_oid, new_oid); |
71564516 | 1049 | if (flags & REF_HAVE_OLD) |
89f3bbdd | 1050 | oidcpy(&update->old_oid, old_oid); |
13092a91 | 1051 | update->msg = xstrdup_or_null(msg); |
caa4046c MH |
1052 | return update; |
1053 | } | |
1054 | ||
8e34800e RS |
1055 | int ref_transaction_update(struct ref_transaction *transaction, |
1056 | const char *refname, | |
89f3bbdd | 1057 | const struct object_id *new_oid, |
1058 | const struct object_id *old_oid, | |
1d147bdf | 1059 | unsigned int flags, const char *msg, |
8e34800e | 1060 | struct strbuf *err) |
caa4046c | 1061 | { |
5a603b04 JN |
1062 | assert(err); |
1063 | ||
89f3bbdd | 1064 | if ((new_oid && !is_null_oid(new_oid)) ? |
8a679de6 MH |
1065 | check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) : |
1066 | !refname_is_safe(refname)) { | |
661558f0 | 1067 | strbuf_addf(err, _("refusing to update ref with bad name '%s'"), |
d0f810f0 RS |
1068 | refname); |
1069 | return -1; | |
1070 | } | |
1071 | ||
a9bbbcec MH |
1072 | if (flags & ~REF_TRANSACTION_UPDATE_ALLOWED_FLAGS) |
1073 | BUG("illegal flags 0x%x passed to ref_transaction_update()", flags); | |
c788c54c | 1074 | |
89f3bbdd | 1075 | flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0); |
71564516 MH |
1076 | |
1077 | ref_transaction_add_update(transaction, refname, flags, | |
89f3bbdd | 1078 | new_oid, old_oid, msg); |
8e34800e | 1079 | return 0; |
caa4046c MH |
1080 | } |
1081 | ||
b416af5b RS |
1082 | int ref_transaction_create(struct ref_transaction *transaction, |
1083 | const char *refname, | |
89f3bbdd | 1084 | const struct object_id *new_oid, |
fec14ec3 | 1085 | unsigned int flags, const char *msg, |
b416af5b | 1086 | struct strbuf *err) |
caa4046c | 1087 | { |
89f3bbdd | 1088 | if (!new_oid || is_null_oid(new_oid)) |
033abf97 | 1089 | BUG("create called without valid new_oid"); |
89f3bbdd | 1090 | return ref_transaction_update(transaction, refname, new_oid, |
1091 | &null_oid, flags, msg, err); | |
caa4046c MH |
1092 | } |
1093 | ||
8c8bdc0d RS |
1094 | int ref_transaction_delete(struct ref_transaction *transaction, |
1095 | const char *refname, | |
89f3bbdd | 1096 | const struct object_id *old_oid, |
fb5a6bb6 | 1097 | unsigned int flags, const char *msg, |
8c8bdc0d | 1098 | struct strbuf *err) |
caa4046c | 1099 | { |
89f3bbdd | 1100 | if (old_oid && is_null_oid(old_oid)) |
033abf97 | 1101 | BUG("delete called with old_oid set to zeros"); |
1d147bdf | 1102 | return ref_transaction_update(transaction, refname, |
89f3bbdd | 1103 | &null_oid, old_oid, |
1d147bdf | 1104 | flags, msg, err); |
caa4046c MH |
1105 | } |
1106 | ||
16180334 MH |
1107 | int ref_transaction_verify(struct ref_transaction *transaction, |
1108 | const char *refname, | |
89f3bbdd | 1109 | const struct object_id *old_oid, |
16180334 MH |
1110 | unsigned int flags, |
1111 | struct strbuf *err) | |
1112 | { | |
89f3bbdd | 1113 | if (!old_oid) |
033abf97 | 1114 | BUG("verify called with old_oid set to NULL"); |
16180334 | 1115 | return ref_transaction_update(transaction, refname, |
89f3bbdd | 1116 | NULL, old_oid, |
16180334 MH |
1117 | flags, NULL, err); |
1118 | } | |
1119 | ||
c0fe4e8b | 1120 | int refs_update_ref(struct ref_store *refs, const char *msg, |
ae077771 | 1121 | const char *refname, const struct object_id *new_oid, |
1122 | const struct object_id *old_oid, unsigned int flags, | |
c0fe4e8b | 1123 | enum action_on_err onerr) |
4738a333 | 1124 | { |
74ec19d4 | 1125 | struct ref_transaction *t = NULL; |
b4d75ac1 | 1126 | struct strbuf err = STRBUF_INIT; |
74ec19d4 | 1127 | int ret = 0; |
b4d75ac1 | 1128 | |
74ec19d4 | 1129 | if (ref_type(refname) == REF_TYPE_PSEUDOREF) { |
23a3f0cb | 1130 | assert(refs == get_main_ref_store(the_repository)); |
ae077771 | 1131 | ret = write_pseudoref(refname, new_oid, old_oid, &err); |
74ec19d4 | 1132 | } else { |
c0fe4e8b | 1133 | t = ref_store_transaction_begin(refs, &err); |
74ec19d4 | 1134 | if (!t || |
89f3bbdd | 1135 | ref_transaction_update(t, refname, new_oid, old_oid, |
74ec19d4 DT |
1136 | flags, msg, &err) || |
1137 | ref_transaction_commit(t, &err)) { | |
1138 | ret = 1; | |
1139 | ref_transaction_free(t); | |
1140 | } | |
1141 | } | |
1142 | if (ret) { | |
661558f0 | 1143 | const char *str = _("update_ref failed for ref '%s': %s"); |
b4d75ac1 | 1144 | |
b4d75ac1 RS |
1145 | switch (onerr) { |
1146 | case UPDATE_REFS_MSG_ON_ERR: | |
1147 | error(str, refname, err.buf); | |
1148 | break; | |
1149 | case UPDATE_REFS_DIE_ON_ERR: | |
1150 | die(str, refname, err.buf); | |
1151 | break; | |
1152 | case UPDATE_REFS_QUIET_ON_ERR: | |
1153 | break; | |
1154 | } | |
1155 | strbuf_release(&err); | |
4738a333 | 1156 | return 1; |
b4d75ac1 RS |
1157 | } |
1158 | strbuf_release(&err); | |
74ec19d4 DT |
1159 | if (t) |
1160 | ref_transaction_free(t); | |
b4d75ac1 | 1161 | return 0; |
4738a333 BK |
1162 | } |
1163 | ||
c0fe4e8b | 1164 | int update_ref(const char *msg, const char *refname, |
ae077771 | 1165 | const struct object_id *new_oid, |
1166 | const struct object_id *old_oid, | |
c0fe4e8b NTND |
1167 | unsigned int flags, enum action_on_err onerr) |
1168 | { | |
23a3f0cb | 1169 | return refs_update_ref(get_main_ref_store(the_repository), msg, refname, new_oid, |
ae077771 | 1170 | old_oid, flags, onerr); |
c0fe4e8b NTND |
1171 | } |
1172 | ||
546edf37 NTND |
1173 | char *refs_shorten_unambiguous_ref(struct ref_store *refs, |
1174 | const char *refname, int strict) | |
7c2b3029 JK |
1175 | { |
1176 | int i; | |
1177 | static char **scanf_fmts; | |
1178 | static int nr_rules; | |
1179 | char *short_name; | |
6cd4a898 | 1180 | struct strbuf resolved_buf = STRBUF_INIT; |
7c2b3029 | 1181 | |
7c2b3029 | 1182 | if (!nr_rules) { |
4346663a MH |
1183 | /* |
1184 | * Pre-generate scanf formats from ref_rev_parse_rules[]. | |
1185 | * Generate a format suitable for scanf from a | |
1186 | * ref_rev_parse_rules rule by interpolating "%s" at the | |
1187 | * location of the "%.*s". | |
1188 | */ | |
7c2b3029 | 1189 | size_t total_len = 0; |
84d5633f | 1190 | size_t offset = 0; |
7c2b3029 JK |
1191 | |
1192 | /* the rule list is NULL terminated, count them first */ | |
a4165851 | 1193 | for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++) |
7902fe03 MH |
1194 | /* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */ |
1195 | total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1; | |
7c2b3029 | 1196 | |
50492f7b | 1197 | scanf_fmts = xmalloc(st_add(st_mult(sizeof(char *), nr_rules), total_len)); |
7c2b3029 | 1198 | |
84d5633f | 1199 | offset = 0; |
7c2b3029 | 1200 | for (i = 0; i < nr_rules; i++) { |
4346663a | 1201 | assert(offset < total_len); |
84d5633f | 1202 | scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] + offset; |
bf4baf1f JK |
1203 | offset += xsnprintf(scanf_fmts[i], total_len - offset, |
1204 | ref_rev_parse_rules[i], 2, "%s") + 1; | |
7c2b3029 JK |
1205 | } |
1206 | } | |
1207 | ||
1208 | /* bail out if there are no rules */ | |
1209 | if (!nr_rules) | |
dfefa935 | 1210 | return xstrdup(refname); |
7c2b3029 | 1211 | |
dfefa935 MH |
1212 | /* buffer for scanf result, at most refname must fit */ |
1213 | short_name = xstrdup(refname); | |
7c2b3029 JK |
1214 | |
1215 | /* skip first rule, it will always match */ | |
1216 | for (i = nr_rules - 1; i > 0 ; --i) { | |
1217 | int j; | |
6e7b3309 | 1218 | int rules_to_fail = i; |
7c2b3029 JK |
1219 | int short_name_len; |
1220 | ||
dfefa935 | 1221 | if (1 != sscanf(refname, scanf_fmts[i], short_name)) |
7c2b3029 JK |
1222 | continue; |
1223 | ||
1224 | short_name_len = strlen(short_name); | |
1225 | ||
6e7b3309 BW |
1226 | /* |
1227 | * in strict mode, all (except the matched one) rules | |
1228 | * must fail to resolve to a valid non-ambiguous ref | |
1229 | */ | |
1230 | if (strict) | |
1231 | rules_to_fail = nr_rules; | |
1232 | ||
7c2b3029 JK |
1233 | /* |
1234 | * check if the short name resolves to a valid ref, | |
1235 | * but use only rules prior to the matched one | |
1236 | */ | |
6e7b3309 | 1237 | for (j = 0; j < rules_to_fail; j++) { |
7c2b3029 | 1238 | const char *rule = ref_rev_parse_rules[j]; |
7c2b3029 | 1239 | |
6e7b3309 BW |
1240 | /* skip matched rule */ |
1241 | if (i == j) | |
1242 | continue; | |
1243 | ||
7c2b3029 JK |
1244 | /* |
1245 | * the short name is ambiguous, if it resolves | |
1246 | * (with this previous rule) to a valid ref | |
1247 | * read_ref() returns 0 on success | |
1248 | */ | |
6cd4a898 JK |
1249 | strbuf_reset(&resolved_buf); |
1250 | strbuf_addf(&resolved_buf, rule, | |
1251 | short_name_len, short_name); | |
546edf37 | 1252 | if (refs_ref_exists(refs, resolved_buf.buf)) |
7c2b3029 JK |
1253 | break; |
1254 | } | |
1255 | ||
1256 | /* | |
1257 | * short name is non-ambiguous if all previous rules | |
1258 | * haven't resolved to a valid ref | |
1259 | */ | |
6cd4a898 JK |
1260 | if (j == rules_to_fail) { |
1261 | strbuf_release(&resolved_buf); | |
7c2b3029 | 1262 | return short_name; |
6cd4a898 | 1263 | } |
7c2b3029 JK |
1264 | } |
1265 | ||
6cd4a898 | 1266 | strbuf_release(&resolved_buf); |
7c2b3029 | 1267 | free(short_name); |
dfefa935 | 1268 | return xstrdup(refname); |
7c2b3029 | 1269 | } |
daebaa78 | 1270 | |
546edf37 NTND |
1271 | char *shorten_unambiguous_ref(const char *refname, int strict) |
1272 | { | |
1273 | return refs_shorten_unambiguous_ref(get_main_ref_store(the_repository), | |
1274 | refname, strict); | |
1275 | } | |
1276 | ||
daebaa78 JH |
1277 | static struct string_list *hide_refs; |
1278 | ||
1279 | int parse_hide_refs_config(const char *var, const char *value, const char *section) | |
1280 | { | |
ad8c7cda | 1281 | const char *key; |
daebaa78 | 1282 | if (!strcmp("transfer.hiderefs", var) || |
ad8c7cda JK |
1283 | (!parse_config_key(var, section, NULL, NULL, &key) && |
1284 | !strcmp(key, "hiderefs"))) { | |
daebaa78 JH |
1285 | char *ref; |
1286 | int len; | |
1287 | ||
1288 | if (!value) | |
1289 | return config_error_nonbool(var); | |
1290 | ref = xstrdup(value); | |
1291 | len = strlen(ref); | |
1292 | while (len && ref[len - 1] == '/') | |
1293 | ref[--len] = '\0'; | |
1294 | if (!hide_refs) { | |
1295 | hide_refs = xcalloc(1, sizeof(*hide_refs)); | |
1296 | hide_refs->strdup_strings = 1; | |
1297 | } | |
1298 | string_list_append(hide_refs, ref); | |
1299 | } | |
1300 | return 0; | |
1301 | } | |
1302 | ||
78a766ab | 1303 | int ref_is_hidden(const char *refname, const char *refname_full) |
daebaa78 | 1304 | { |
2bc31d16 | 1305 | int i; |
daebaa78 JH |
1306 | |
1307 | if (!hide_refs) | |
1308 | return 0; | |
2bc31d16 JK |
1309 | for (i = hide_refs->nr - 1; i >= 0; i--) { |
1310 | const char *match = hide_refs->items[i].string; | |
78a766ab | 1311 | const char *subject; |
2bc31d16 | 1312 | int neg = 0; |
7a40a95e | 1313 | const char *p; |
2bc31d16 JK |
1314 | |
1315 | if (*match == '!') { | |
1316 | neg = 1; | |
1317 | match++; | |
1318 | } | |
1319 | ||
78a766ab LF |
1320 | if (*match == '^') { |
1321 | subject = refname_full; | |
1322 | match++; | |
1323 | } else { | |
1324 | subject = refname; | |
1325 | } | |
1326 | ||
1327 | /* refname can be NULL when namespaces are used. */ | |
7a40a95e CC |
1328 | if (subject && |
1329 | skip_prefix(subject, match, &p) && | |
1330 | (!*p || *p == '/')) | |
2bc31d16 | 1331 | return !neg; |
daebaa78 JH |
1332 | } |
1333 | return 0; | |
1334 | } | |
fa5b1830 | 1335 | |
0845122c DT |
1336 | const char *find_descendant_ref(const char *dirname, |
1337 | const struct string_list *extras, | |
1338 | const struct string_list *skip) | |
fa5b1830 | 1339 | { |
0845122c | 1340 | int pos; |
fa5b1830 | 1341 | |
0845122c DT |
1342 | if (!extras) |
1343 | return NULL; | |
fa5b1830 MH |
1344 | |
1345 | /* | |
0845122c DT |
1346 | * Look at the place where dirname would be inserted into |
1347 | * extras. If there is an entry at that position that starts | |
1348 | * with dirname (remember, dirname includes the trailing | |
1349 | * slash) and is not in skip, then we have a conflict. | |
fa5b1830 | 1350 | */ |
0845122c DT |
1351 | for (pos = string_list_find_insert_index(extras, dirname, 0); |
1352 | pos < extras->nr; pos++) { | |
1353 | const char *extra_refname = extras->items[pos].string; | |
fa5b1830 | 1354 | |
0845122c DT |
1355 | if (!starts_with(extra_refname, dirname)) |
1356 | break; | |
1357 | ||
1358 | if (!skip || !string_list_has_string(skip, extra_refname)) | |
1359 | return extra_refname; | |
fa5b1830 | 1360 | } |
0845122c DT |
1361 | return NULL; |
1362 | } | |
fa5b1830 | 1363 | |
7d2df051 NTND |
1364 | int refs_rename_ref_available(struct ref_store *refs, |
1365 | const char *old_refname, | |
1366 | const char *new_refname) | |
0845122c DT |
1367 | { |
1368 | struct string_list skip = STRING_LIST_INIT_NODUP; | |
1369 | struct strbuf err = STRBUF_INIT; | |
ff3a299c | 1370 | int ok; |
fa5b1830 | 1371 | |
ff3a299c | 1372 | string_list_insert(&skip, old_refname); |
7d2df051 NTND |
1373 | ok = !refs_verify_refname_available(refs, new_refname, |
1374 | NULL, &skip, &err); | |
ff3a299c | 1375 | if (!ok) |
0845122c DT |
1376 | error("%s", err.buf); |
1377 | ||
1378 | string_list_clear(&skip, 0); | |
1379 | strbuf_release(&err); | |
ff3a299c | 1380 | return ok; |
fa5b1830 | 1381 | } |
2bf68ed5 | 1382 | |
62f0b399 | 1383 | int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
2bf68ed5 DT |
1384 | { |
1385 | struct object_id oid; | |
1386 | int flag; | |
1387 | ||
62f0b399 | 1388 | if (!refs_read_ref_full(refs, "HEAD", RESOLVE_REF_READING, |
34c290a6 | 1389 | &oid, &flag)) |
2bf68ed5 DT |
1390 | return fn("HEAD", &oid, flag, cb_data); |
1391 | ||
1392 | return 0; | |
1393 | } | |
1394 | ||
1395 | int head_ref(each_ref_fn fn, void *cb_data) | |
1396 | { | |
23a3f0cb | 1397 | return refs_head_ref(get_main_ref_store(the_repository), fn, cb_data); |
2bf68ed5 | 1398 | } |
93770590 | 1399 | |
e121b9cb MH |
1400 | struct ref_iterator *refs_ref_iterator_begin( |
1401 | struct ref_store *refs, | |
1402 | const char *prefix, int trim, int flags) | |
1403 | { | |
1404 | struct ref_iterator *iter; | |
1405 | ||
0a0865b8 MH |
1406 | if (ref_paranoia < 0) |
1407 | ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0); | |
1408 | if (ref_paranoia) | |
1409 | flags |= DO_FOR_EACH_INCLUDE_BROKEN; | |
1410 | ||
e121b9cb | 1411 | iter = refs->be->iterator_begin(refs, prefix, flags); |
c7599718 MH |
1412 | |
1413 | /* | |
1414 | * `iterator_begin()` already takes care of prefix, but we | |
1415 | * might need to do some trimming: | |
1416 | */ | |
1417 | if (trim) | |
1418 | iter = prefix_ref_iterator_begin(iter, "", trim); | |
e121b9cb | 1419 | |
8738a8a4 MH |
1420 | /* Sanity check for subclasses: */ |
1421 | if (!iter->ordered) | |
1422 | BUG("reference iterator is not ordered"); | |
1423 | ||
e121b9cb MH |
1424 | return iter; |
1425 | } | |
1426 | ||
4c4de895 MH |
1427 | /* |
1428 | * Call fn for each reference in the specified submodule for which the | |
1429 | * refname begins with prefix. If trim is non-zero, then trim that | |
1430 | * many characters off the beginning of each refname before passing | |
1431 | * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to | |
1432 | * include broken references in the iteration. If fn ever returns a | |
1433 | * non-zero value, stop the iteration and return that value; | |
1434 | * otherwise, return 0. | |
1435 | */ | |
4a6067cd SB |
1436 | static int do_for_each_repo_ref(struct repository *r, const char *prefix, |
1437 | each_repo_ref_fn fn, int trim, int flags, | |
1438 | void *cb_data) | |
1439 | { | |
1440 | struct ref_iterator *iter; | |
1441 | struct ref_store *refs = get_main_ref_store(r); | |
1442 | ||
1443 | if (!refs) | |
1444 | return 0; | |
1445 | ||
1446 | iter = refs_ref_iterator_begin(refs, prefix, trim, flags); | |
1447 | ||
1448 | return do_for_each_repo_ref_iterator(r, iter, fn, cb_data); | |
1449 | } | |
1450 | ||
1451 | struct do_for_each_ref_help { | |
1452 | each_ref_fn *fn; | |
1453 | void *cb_data; | |
1454 | }; | |
1455 | ||
1456 | static int do_for_each_ref_helper(struct repository *r, | |
1457 | const char *refname, | |
1458 | const struct object_id *oid, | |
1459 | int flags, | |
1460 | void *cb_data) | |
1461 | { | |
1462 | struct do_for_each_ref_help *hp = cb_data; | |
1463 | ||
1464 | return hp->fn(refname, oid, flags, hp->cb_data); | |
1465 | } | |
1466 | ||
7d2df051 | 1467 | static int do_for_each_ref(struct ref_store *refs, const char *prefix, |
4c4de895 MH |
1468 | each_ref_fn fn, int trim, int flags, void *cb_data) |
1469 | { | |
1470 | struct ref_iterator *iter; | |
4a6067cd | 1471 | struct do_for_each_ref_help hp = { fn, cb_data }; |
4c4de895 | 1472 | |
00eebe35 MH |
1473 | if (!refs) |
1474 | return 0; | |
1475 | ||
e121b9cb | 1476 | iter = refs_ref_iterator_begin(refs, prefix, trim, flags); |
4c4de895 | 1477 | |
4a6067cd SB |
1478 | return do_for_each_repo_ref_iterator(the_repository, iter, |
1479 | do_for_each_ref_helper, &hp); | |
4c4de895 MH |
1480 | } |
1481 | ||
7d2df051 NTND |
1482 | int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
1483 | { | |
1484 | return do_for_each_ref(refs, "", fn, 0, 0, cb_data); | |
1485 | } | |
1486 | ||
93770590 DT |
1487 | int for_each_ref(each_ref_fn fn, void *cb_data) |
1488 | { | |
23a3f0cb | 1489 | return refs_for_each_ref(get_main_ref_store(the_repository), fn, cb_data); |
93770590 DT |
1490 | } |
1491 | ||
7d2df051 NTND |
1492 | int refs_for_each_ref_in(struct ref_store *refs, const char *prefix, |
1493 | each_ref_fn fn, void *cb_data) | |
1494 | { | |
1495 | return do_for_each_ref(refs, prefix, fn, strlen(prefix), 0, cb_data); | |
93770590 DT |
1496 | } |
1497 | ||
1498 | int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data) | |
1499 | { | |
23a3f0cb | 1500 | return refs_for_each_ref_in(get_main_ref_store(the_repository), prefix, fn, cb_data); |
93770590 DT |
1501 | } |
1502 | ||
1503 | int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken) | |
1504 | { | |
1505 | unsigned int flag = 0; | |
1506 | ||
1507 | if (broken) | |
1508 | flag = DO_FOR_EACH_INCLUDE_BROKEN; | |
23a3f0cb | 1509 | return do_for_each_ref(get_main_ref_store(the_repository), |
7d2df051 | 1510 | prefix, fn, 0, flag, cb_data); |
93770590 DT |
1511 | } |
1512 | ||
073cf63c NTND |
1513 | int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix, |
1514 | each_ref_fn fn, void *cb_data, | |
1515 | unsigned int broken) | |
03df567f MH |
1516 | { |
1517 | unsigned int flag = 0; | |
1518 | ||
1519 | if (broken) | |
1520 | flag = DO_FOR_EACH_INCLUDE_BROKEN; | |
073cf63c | 1521 | return do_for_each_ref(refs, prefix, fn, 0, flag, cb_data); |
03df567f MH |
1522 | } |
1523 | ||
212e0f7e | 1524 | int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data) |
93770590 | 1525 | { |
212e0f7e SB |
1526 | return do_for_each_repo_ref(r, git_replace_ref_base, fn, |
1527 | strlen(git_replace_ref_base), | |
1528 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); | |
93770590 DT |
1529 | } |
1530 | ||
1531 | int for_each_namespaced_ref(each_ref_fn fn, void *cb_data) | |
1532 | { | |
1533 | struct strbuf buf = STRBUF_INIT; | |
1534 | int ret; | |
1535 | strbuf_addf(&buf, "%srefs/", get_git_namespace()); | |
23a3f0cb | 1536 | ret = do_for_each_ref(get_main_ref_store(the_repository), |
7d2df051 | 1537 | buf.buf, fn, 0, 0, cb_data); |
93770590 DT |
1538 | strbuf_release(&buf); |
1539 | return ret; | |
1540 | } | |
1541 | ||
7d2df051 | 1542 | int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
93770590 | 1543 | { |
7d2df051 | 1544 | return do_for_each_ref(refs, "", fn, 0, |
93770590 DT |
1545 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); |
1546 | } | |
2d0663b2 | 1547 | |
7d2df051 NTND |
1548 | int for_each_rawref(each_ref_fn fn, void *cb_data) |
1549 | { | |
23a3f0cb | 1550 | return refs_for_each_rawref(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 NTND |
1551 | } |
1552 | ||
470be518 | 1553 | int refs_read_raw_ref(struct ref_store *ref_store, |
99afe91a | 1554 | const char *refname, struct object_id *oid, |
470be518 MH |
1555 | struct strbuf *referent, unsigned int *type) |
1556 | { | |
99afe91a | 1557 | return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, type); |
470be518 MH |
1558 | } |
1559 | ||
2d0663b2 | 1560 | /* This function needs to return a meaningful errno on failure */ |
7d2df051 | 1561 | const char *refs_resolve_ref_unsafe(struct ref_store *refs, |
3c0cb0cb MH |
1562 | const char *refname, |
1563 | int resolve_flags, | |
49e61479 | 1564 | struct object_id *oid, int *flags) |
2d0663b2 DT |
1565 | { |
1566 | static struct strbuf sb_refname = STRBUF_INIT; | |
54fad661 | 1567 | struct object_id unused_oid; |
2d0663b2 DT |
1568 | int unused_flags; |
1569 | int symref_count; | |
1570 | ||
49e61479 | 1571 | if (!oid) |
1572 | oid = &unused_oid; | |
2d0663b2 DT |
1573 | if (!flags) |
1574 | flags = &unused_flags; | |
1575 | ||
1576 | *flags = 0; | |
1577 | ||
1578 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1579 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
1580 | !refname_is_safe(refname)) { | |
1581 | errno = EINVAL; | |
1582 | return NULL; | |
1583 | } | |
1584 | ||
1585 | /* | |
1586 | * dwim_ref() uses REF_ISBROKEN to distinguish between | |
1587 | * missing refs and refs that were present but invalid, | |
1588 | * to complain about the latter to stderr. | |
1589 | * | |
1590 | * We don't know whether the ref exists, so don't set | |
1591 | * REF_ISBROKEN yet. | |
1592 | */ | |
1593 | *flags |= REF_BAD_NAME; | |
1594 | } | |
1595 | ||
1596 | for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) { | |
1597 | unsigned int read_flags = 0; | |
1598 | ||
470be518 | 1599 | if (refs_read_raw_ref(refs, refname, |
99afe91a | 1600 | oid, &sb_refname, &read_flags)) { |
2d0663b2 | 1601 | *flags |= read_flags; |
a1c1d817 JK |
1602 | |
1603 | /* In reading mode, refs must eventually resolve */ | |
1604 | if (resolve_flags & RESOLVE_REF_READING) | |
1605 | return NULL; | |
1606 | ||
1607 | /* | |
1608 | * Otherwise a missing ref is OK. But the files backend | |
1609 | * may show errors besides ENOENT if there are | |
1610 | * similarly-named refs. | |
1611 | */ | |
1612 | if (errno != ENOENT && | |
1613 | errno != EISDIR && | |
1614 | errno != ENOTDIR) | |
2d0663b2 | 1615 | return NULL; |
a1c1d817 | 1616 | |
49e61479 | 1617 | oidclr(oid); |
2d0663b2 DT |
1618 | if (*flags & REF_BAD_NAME) |
1619 | *flags |= REF_ISBROKEN; | |
1620 | return refname; | |
1621 | } | |
1622 | ||
1623 | *flags |= read_flags; | |
1624 | ||
1625 | if (!(read_flags & REF_ISSYMREF)) { | |
1626 | if (*flags & REF_BAD_NAME) { | |
49e61479 | 1627 | oidclr(oid); |
2d0663b2 DT |
1628 | *flags |= REF_ISBROKEN; |
1629 | } | |
1630 | return refname; | |
1631 | } | |
1632 | ||
1633 | refname = sb_refname.buf; | |
1634 | if (resolve_flags & RESOLVE_REF_NO_RECURSE) { | |
49e61479 | 1635 | oidclr(oid); |
2d0663b2 DT |
1636 | return refname; |
1637 | } | |
1638 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1639 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
1640 | !refname_is_safe(refname)) { | |
1641 | errno = EINVAL; | |
1642 | return NULL; | |
1643 | } | |
1644 | ||
1645 | *flags |= REF_ISBROKEN | REF_BAD_NAME; | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | errno = ELOOP; | |
1650 | return NULL; | |
1651 | } | |
00eebe35 | 1652 | |
6fb5acfd DT |
1653 | /* backend functions */ |
1654 | int refs_init_db(struct strbuf *err) | |
1655 | { | |
23a3f0cb | 1656 | struct ref_store *refs = get_main_ref_store(the_repository); |
6fb5acfd DT |
1657 | |
1658 | return refs->be->init_db(refs, err); | |
1659 | } | |
1660 | ||
bd40dcda | 1661 | const char *resolve_ref_unsafe(const char *refname, int resolve_flags, |
49e61479 | 1662 | struct object_id *oid, int *flags) |
bd40dcda | 1663 | { |
23a3f0cb | 1664 | return refs_resolve_ref_unsafe(get_main_ref_store(the_repository), refname, |
49e61479 | 1665 | resolve_flags, oid, flags); |
bd40dcda MH |
1666 | } |
1667 | ||
a8355bb7 | 1668 | int resolve_gitlink_ref(const char *submodule, const char *refname, |
a98e6101 | 1669 | struct object_id *oid) |
424dcc76 | 1670 | { |
424dcc76 MH |
1671 | struct ref_store *refs; |
1672 | int flags; | |
1673 | ||
29babbee | 1674 | refs = get_submodule_ref_store(submodule); |
48a8475f | 1675 | |
424dcc76 MH |
1676 | if (!refs) |
1677 | return -1; | |
1678 | ||
49e61479 | 1679 | if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) || |
a98e6101 | 1680 | is_null_oid(oid)) |
424dcc76 MH |
1681 | return -1; |
1682 | return 0; | |
1683 | } | |
1684 | ||
0c064d90 | 1685 | struct ref_store_hash_entry |
7d4558c4 MH |
1686 | { |
1687 | struct hashmap_entry ent; /* must be the first member! */ | |
1688 | ||
1689 | struct ref_store *refs; | |
1690 | ||
0c064d90 NTND |
1691 | /* NUL-terminated identifier of the ref store: */ |
1692 | char name[FLEX_ARRAY]; | |
7d4558c4 MH |
1693 | }; |
1694 | ||
7663cdc8 SB |
1695 | static int ref_store_hash_cmp(const void *unused_cmp_data, |
1696 | const void *entry, const void *entry_or_key, | |
7d4558c4 MH |
1697 | const void *keydata) |
1698 | { | |
0c064d90 NTND |
1699 | const struct ref_store_hash_entry *e1 = entry, *e2 = entry_or_key; |
1700 | const char *name = keydata ? keydata : e2->name; | |
7d4558c4 | 1701 | |
0c064d90 | 1702 | return strcmp(e1->name, name); |
7d4558c4 MH |
1703 | } |
1704 | ||
0c064d90 NTND |
1705 | static struct ref_store_hash_entry *alloc_ref_store_hash_entry( |
1706 | const char *name, struct ref_store *refs) | |
7d4558c4 | 1707 | { |
0c064d90 | 1708 | struct ref_store_hash_entry *entry; |
7d4558c4 | 1709 | |
0c064d90 NTND |
1710 | FLEX_ALLOC_STR(entry, name, name); |
1711 | hashmap_entry_init(entry, strhash(name)); | |
7d4558c4 MH |
1712 | entry->refs = refs; |
1713 | return entry; | |
1714 | } | |
1715 | ||
7d4558c4 MH |
1716 | /* A hashmap of ref_stores, stored by submodule name: */ |
1717 | static struct hashmap submodule_ref_stores; | |
00eebe35 | 1718 | |
17eff96b NTND |
1719 | /* A hashmap of ref_stores, stored by worktree id: */ |
1720 | static struct hashmap worktree_ref_stores; | |
1721 | ||
c468da4e | 1722 | /* |
0c064d90 NTND |
1723 | * Look up a ref store by name. If that ref_store hasn't been |
1724 | * registered yet, return NULL. | |
c468da4e | 1725 | */ |
0c064d90 NTND |
1726 | static struct ref_store *lookup_ref_store_map(struct hashmap *map, |
1727 | const char *name) | |
00eebe35 | 1728 | { |
0c064d90 | 1729 | struct ref_store_hash_entry *entry; |
00eebe35 | 1730 | |
0c064d90 | 1731 | if (!map->tablesize) |
7d4558c4 MH |
1732 | /* It's initialized on demand in register_ref_store(). */ |
1733 | return NULL; | |
620a66b9 | 1734 | |
0c064d90 | 1735 | entry = hashmap_get_from_hash(map, strhash(name), name); |
7d4558c4 | 1736 | return entry ? entry->refs : NULL; |
00eebe35 MH |
1737 | } |
1738 | ||
c468da4e MH |
1739 | /* |
1740 | * Create, record, and return a ref_store instance for the specified | |
5d0bc90e | 1741 | * gitdir. |
c468da4e | 1742 | */ |
9e7ec634 NTND |
1743 | static struct ref_store *ref_store_init(const char *gitdir, |
1744 | unsigned int flags) | |
00eebe35 MH |
1745 | { |
1746 | const char *be_name = "files"; | |
1747 | struct ref_storage_be *be = find_ref_storage_backend(be_name); | |
ba88add5 | 1748 | struct ref_store *refs; |
00eebe35 MH |
1749 | |
1750 | if (!be) | |
033abf97 | 1751 | BUG("reference backend %s is unknown", be_name); |
00eebe35 | 1752 | |
9e7ec634 | 1753 | refs = be->init(gitdir, flags); |
ba88add5 | 1754 | return refs; |
00eebe35 MH |
1755 | } |
1756 | ||
64a74161 | 1757 | struct ref_store *get_main_ref_store(struct repository *r) |
24c8407e | 1758 | { |
64a74161 SB |
1759 | if (r->refs) |
1760 | return r->refs; | |
24c8407e | 1761 | |
2dc417ab JK |
1762 | if (!r->gitdir) |
1763 | BUG("attempting to get main_ref_store outside of repository"); | |
1764 | ||
64a74161 SB |
1765 | r->refs = ref_store_init(r->gitdir, REF_STORE_ALL_CAPS); |
1766 | return r->refs; | |
378dc910 NTND |
1767 | } |
1768 | ||
1769 | /* | |
0c064d90 NTND |
1770 | * Associate a ref store with a name. It is a fatal error to call this |
1771 | * function twice for the same name. | |
378dc910 | 1772 | */ |
0c064d90 NTND |
1773 | static void register_ref_store_map(struct hashmap *map, |
1774 | const char *type, | |
1775 | struct ref_store *refs, | |
1776 | const char *name) | |
378dc910 | 1777 | { |
0c064d90 | 1778 | if (!map->tablesize) |
7663cdc8 | 1779 | hashmap_init(map, ref_store_hash_cmp, NULL, 0); |
378dc910 | 1780 | |
0c064d90 | 1781 | if (hashmap_put(map, alloc_ref_store_hash_entry(name, refs))) |
033abf97 | 1782 | BUG("%s ref_store '%s' initialized twice", type, name); |
24c8407e NTND |
1783 | } |
1784 | ||
18d0002d | 1785 | struct ref_store *get_submodule_ref_store(const char *submodule) |
00eebe35 | 1786 | { |
126c9e05 | 1787 | struct strbuf submodule_sb = STRBUF_INIT; |
00eebe35 | 1788 | struct ref_store *refs; |
29babbee NTND |
1789 | char *to_free = NULL; |
1790 | size_t len; | |
00eebe35 | 1791 | |
82a150f2 NTND |
1792 | if (!submodule) |
1793 | return NULL; | |
1794 | ||
873ea90d NTND |
1795 | len = strlen(submodule); |
1796 | while (len && is_dir_sep(submodule[len - 1])) | |
1797 | len--; | |
1798 | if (!len) | |
1799 | return NULL; | |
00eebe35 | 1800 | |
29babbee NTND |
1801 | if (submodule[len]) |
1802 | /* We need to strip off one or more trailing slashes */ | |
1803 | submodule = to_free = xmemdupz(submodule, len); | |
00eebe35 | 1804 | |
0c064d90 | 1805 | refs = lookup_ref_store_map(&submodule_ref_stores, submodule); |
126c9e05 | 1806 | if (refs) |
2c616c17 | 1807 | goto done; |
00eebe35 | 1808 | |
126c9e05 | 1809 | strbuf_addstr(&submodule_sb, submodule); |
2c616c17 NTND |
1810 | if (!is_nonbare_repository_dir(&submodule_sb)) |
1811 | goto done; | |
00eebe35 | 1812 | |
2c616c17 NTND |
1813 | if (submodule_to_gitdir(&submodule_sb, submodule)) |
1814 | goto done; | |
00eebe35 | 1815 | |
9e7ec634 NTND |
1816 | /* assume that add_submodule_odb() has been called */ |
1817 | refs = ref_store_init(submodule_sb.buf, | |
1818 | REF_STORE_READ | REF_STORE_ODB); | |
0c064d90 NTND |
1819 | register_ref_store_map(&submodule_ref_stores, "submodule", |
1820 | refs, submodule); | |
5d0bc90e | 1821 | |
2c616c17 | 1822 | done: |
5d0bc90e | 1823 | strbuf_release(&submodule_sb); |
29babbee NTND |
1824 | free(to_free); |
1825 | ||
00eebe35 MH |
1826 | return refs; |
1827 | } | |
1828 | ||
17eff96b NTND |
1829 | struct ref_store *get_worktree_ref_store(const struct worktree *wt) |
1830 | { | |
1831 | struct ref_store *refs; | |
1832 | const char *id; | |
1833 | ||
1834 | if (wt->is_current) | |
23a3f0cb | 1835 | return get_main_ref_store(the_repository); |
17eff96b NTND |
1836 | |
1837 | id = wt->id ? wt->id : "/"; | |
1838 | refs = lookup_ref_store_map(&worktree_ref_stores, id); | |
1839 | if (refs) | |
1840 | return refs; | |
1841 | ||
1842 | if (wt->id) | |
1843 | refs = ref_store_init(git_common_path("worktrees/%s", wt->id), | |
1844 | REF_STORE_ALL_CAPS); | |
1845 | else | |
1846 | refs = ref_store_init(get_git_common_dir(), | |
1847 | REF_STORE_ALL_CAPS); | |
1848 | ||
1849 | if (refs) | |
1850 | register_ref_store_map(&worktree_ref_stores, "worktree", | |
1851 | refs, id); | |
1852 | return refs; | |
1853 | } | |
1854 | ||
620a66b9 | 1855 | void base_ref_store_init(struct ref_store *refs, |
fbfd0a29 | 1856 | const struct ref_storage_be *be) |
00eebe35 | 1857 | { |
620a66b9 | 1858 | refs->be = be; |
00eebe35 | 1859 | } |
127b42a1 RS |
1860 | |
1861 | /* backend functions */ | |
7d2df051 | 1862 | int refs_pack_refs(struct ref_store *refs, unsigned int flags) |
8231527e | 1863 | { |
8231527e MH |
1864 | return refs->be->pack_refs(refs, flags); |
1865 | } | |
1866 | ||
7d2df051 | 1867 | int refs_peel_ref(struct ref_store *refs, const char *refname, |
b420d909 | 1868 | struct object_id *oid) |
7d2df051 | 1869 | { |
ba1c052f | 1870 | int flag; |
34c290a6 | 1871 | struct object_id base; |
ba1c052f MH |
1872 | |
1873 | if (current_ref_iter && current_ref_iter->refname == refname) { | |
1874 | struct object_id peeled; | |
1875 | ||
1876 | if (ref_iterator_peel(current_ref_iter, &peeled)) | |
1877 | return -1; | |
b420d909 | 1878 | oidcpy(oid, &peeled); |
ba1c052f MH |
1879 | return 0; |
1880 | } | |
1881 | ||
1882 | if (refs_read_ref_full(refs, refname, | |
34c290a6 | 1883 | RESOLVE_REF_READING, &base, &flag)) |
ba1c052f MH |
1884 | return -1; |
1885 | ||
ac2ed0d7 | 1886 | return peel_object(&base, oid); |
8231527e MH |
1887 | } |
1888 | ||
b420d909 | 1889 | int peel_ref(const char *refname, struct object_id *oid) |
bd427cf2 | 1890 | { |
23a3f0cb | 1891 | return refs_peel_ref(get_main_ref_store(the_repository), refname, oid); |
7d2df051 | 1892 | } |
bd427cf2 | 1893 | |
7d2df051 NTND |
1894 | int refs_create_symref(struct ref_store *refs, |
1895 | const char *ref_target, | |
1896 | const char *refs_heads_master, | |
1897 | const char *logmsg) | |
1898 | { | |
1899 | return refs->be->create_symref(refs, ref_target, | |
1900 | refs_heads_master, | |
1901 | logmsg); | |
bd427cf2 MH |
1902 | } |
1903 | ||
284689ba MH |
1904 | int create_symref(const char *ref_target, const char *refs_heads_master, |
1905 | const char *logmsg) | |
1906 | { | |
23a3f0cb | 1907 | return refs_create_symref(get_main_ref_store(the_repository), ref_target, |
7d2df051 | 1908 | refs_heads_master, logmsg); |
284689ba MH |
1909 | } |
1910 | ||
2ced105c MH |
1911 | int ref_update_reject_duplicates(struct string_list *refnames, |
1912 | struct strbuf *err) | |
1913 | { | |
a552e50e | 1914 | size_t i, n = refnames->nr; |
2ced105c MH |
1915 | |
1916 | assert(err); | |
1917 | ||
8556f8d6 MH |
1918 | for (i = 1; i < n; i++) { |
1919 | int cmp = strcmp(refnames->items[i - 1].string, | |
1920 | refnames->items[i].string); | |
1921 | ||
1922 | if (!cmp) { | |
2ced105c | 1923 | strbuf_addf(err, |
661558f0 | 1924 | _("multiple updates for ref '%s' not allowed"), |
2ced105c MH |
1925 | refnames->items[i].string); |
1926 | return 1; | |
8556f8d6 | 1927 | } else if (cmp > 0) { |
033abf97 | 1928 | BUG("ref_update_reject_duplicates() received unsorted list"); |
2ced105c | 1929 | } |
8556f8d6 | 1930 | } |
2ced105c MH |
1931 | return 0; |
1932 | } | |
1933 | ||
30173b88 MH |
1934 | int ref_transaction_prepare(struct ref_transaction *transaction, |
1935 | struct strbuf *err) | |
127b42a1 | 1936 | { |
c0fe4e8b | 1937 | struct ref_store *refs = transaction->ref_store; |
127b42a1 | 1938 | |
8d4240d3 MH |
1939 | switch (transaction->state) { |
1940 | case REF_TRANSACTION_OPEN: | |
1941 | /* Good. */ | |
1942 | break; | |
30173b88 | 1943 | case REF_TRANSACTION_PREPARED: |
033abf97 | 1944 | BUG("prepare called twice on reference transaction"); |
30173b88 | 1945 | break; |
8d4240d3 | 1946 | case REF_TRANSACTION_CLOSED: |
033abf97 | 1947 | BUG("prepare called on a closed reference transaction"); |
8d4240d3 MH |
1948 | break; |
1949 | default: | |
033abf97 | 1950 | BUG("unexpected reference transaction state"); |
8d4240d3 MH |
1951 | break; |
1952 | } | |
1953 | ||
d8f4481c JK |
1954 | if (getenv(GIT_QUARANTINE_ENVIRONMENT)) { |
1955 | strbuf_addstr(err, | |
1956 | _("ref updates forbidden inside quarantine environment")); | |
1957 | return -1; | |
1958 | } | |
1959 | ||
30173b88 MH |
1960 | return refs->be->transaction_prepare(refs, transaction, err); |
1961 | } | |
1962 | ||
1963 | int ref_transaction_abort(struct ref_transaction *transaction, | |
1964 | struct strbuf *err) | |
1965 | { | |
1966 | struct ref_store *refs = transaction->ref_store; | |
1967 | int ret = 0; | |
1968 | ||
1969 | switch (transaction->state) { | |
1970 | case REF_TRANSACTION_OPEN: | |
1971 | /* No need to abort explicitly. */ | |
1972 | break; | |
1973 | case REF_TRANSACTION_PREPARED: | |
1974 | ret = refs->be->transaction_abort(refs, transaction, err); | |
1975 | break; | |
1976 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 1977 | BUG("abort called on a closed reference transaction"); |
30173b88 MH |
1978 | break; |
1979 | default: | |
033abf97 | 1980 | BUG("unexpected reference transaction state"); |
30173b88 MH |
1981 | break; |
1982 | } | |
1983 | ||
1984 | ref_transaction_free(transaction); | |
1985 | return ret; | |
1986 | } | |
1987 | ||
1988 | int ref_transaction_commit(struct ref_transaction *transaction, | |
1989 | struct strbuf *err) | |
1990 | { | |
1991 | struct ref_store *refs = transaction->ref_store; | |
1992 | int ret; | |
1993 | ||
1994 | switch (transaction->state) { | |
1995 | case REF_TRANSACTION_OPEN: | |
1996 | /* Need to prepare first. */ | |
1997 | ret = ref_transaction_prepare(transaction, err); | |
1998 | if (ret) | |
1999 | return ret; | |
2000 | break; | |
2001 | case REF_TRANSACTION_PREPARED: | |
2002 | /* Fall through to finish. */ | |
2003 | break; | |
2004 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2005 | BUG("commit called on a closed reference transaction"); |
30173b88 MH |
2006 | break; |
2007 | default: | |
033abf97 | 2008 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2009 | break; |
2010 | } | |
2011 | ||
2012 | return refs->be->transaction_finish(refs, transaction, err); | |
127b42a1 | 2013 | } |
62665823 | 2014 | |
7d2df051 NTND |
2015 | int refs_verify_refname_available(struct ref_store *refs, |
2016 | const char *refname, | |
b05855b5 | 2017 | const struct string_list *extras, |
7d2df051 NTND |
2018 | const struct string_list *skip, |
2019 | struct strbuf *err) | |
62665823 | 2020 | { |
b05855b5 MH |
2021 | const char *slash; |
2022 | const char *extra_refname; | |
2023 | struct strbuf dirname = STRBUF_INIT; | |
2024 | struct strbuf referent = STRBUF_INIT; | |
2025 | struct object_id oid; | |
2026 | unsigned int type; | |
2027 | struct ref_iterator *iter; | |
2028 | int ok; | |
2029 | int ret = -1; | |
2030 | ||
2031 | /* | |
2032 | * For the sake of comments in this function, suppose that | |
2033 | * refname is "refs/foo/bar". | |
2034 | */ | |
2035 | ||
2036 | assert(err); | |
2037 | ||
2038 | strbuf_grow(&dirname, strlen(refname) + 1); | |
2039 | for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) { | |
2040 | /* Expand dirname to the new prefix, not including the trailing slash: */ | |
2041 | strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len); | |
2042 | ||
2043 | /* | |
2044 | * We are still at a leading dir of the refname (e.g., | |
2045 | * "refs/foo"; if there is a reference with that name, | |
2046 | * it is a conflict, *unless* it is in skip. | |
2047 | */ | |
2048 | if (skip && string_list_has_string(skip, dirname.buf)) | |
2049 | continue; | |
2050 | ||
99afe91a | 2051 | if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, &type)) { |
661558f0 | 2052 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2053 | dirname.buf, refname); |
2054 | goto cleanup; | |
2055 | } | |
2056 | ||
2057 | if (extras && string_list_has_string(extras, dirname.buf)) { | |
661558f0 | 2058 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2059 | refname, dirname.buf); |
2060 | goto cleanup; | |
2061 | } | |
2062 | } | |
2063 | ||
2064 | /* | |
2065 | * We are at the leaf of our refname (e.g., "refs/foo/bar"). | |
2066 | * There is no point in searching for a reference with that | |
2067 | * name, because a refname isn't considered to conflict with | |
2068 | * itself. But we still need to check for references whose | |
2069 | * names are in the "refs/foo/bar/" namespace, because they | |
2070 | * *do* conflict. | |
2071 | */ | |
2072 | strbuf_addstr(&dirname, refname + dirname.len); | |
2073 | strbuf_addch(&dirname, '/'); | |
2074 | ||
2075 | iter = refs_ref_iterator_begin(refs, dirname.buf, 0, | |
2076 | DO_FOR_EACH_INCLUDE_BROKEN); | |
2077 | while ((ok = ref_iterator_advance(iter)) == ITER_OK) { | |
2078 | if (skip && | |
2079 | string_list_has_string(skip, iter->refname)) | |
2080 | continue; | |
2081 | ||
661558f0 | 2082 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2083 | iter->refname, refname); |
2084 | ref_iterator_abort(iter); | |
2085 | goto cleanup; | |
2086 | } | |
2087 | ||
2088 | if (ok != ITER_DONE) | |
033abf97 | 2089 | BUG("error while iterating over references"); |
b05855b5 MH |
2090 | |
2091 | extra_refname = find_descendant_ref(dirname.buf, extras, skip); | |
2092 | if (extra_refname) | |
661558f0 | 2093 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2094 | refname, extra_refname); |
2095 | else | |
2096 | ret = 0; | |
2097 | ||
2098 | cleanup: | |
2099 | strbuf_release(&referent); | |
2100 | strbuf_release(&dirname); | |
2101 | return ret; | |
62665823 | 2102 | } |
e3688bd6 | 2103 | |
7d2df051 | 2104 | int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
e3688bd6 | 2105 | { |
e3688bd6 | 2106 | struct ref_iterator *iter; |
4a6067cd | 2107 | struct do_for_each_ref_help hp = { fn, cb_data }; |
e3688bd6 DT |
2108 | |
2109 | iter = refs->be->reflog_iterator_begin(refs); | |
2110 | ||
4a6067cd SB |
2111 | return do_for_each_repo_ref_iterator(the_repository, iter, |
2112 | do_for_each_ref_helper, &hp); | |
e3688bd6 DT |
2113 | } |
2114 | ||
7d2df051 | 2115 | int for_each_reflog(each_ref_fn fn, void *cb_data) |
e3688bd6 | 2116 | { |
23a3f0cb | 2117 | return refs_for_each_reflog(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 | 2118 | } |
e3688bd6 | 2119 | |
7d2df051 NTND |
2120 | int refs_for_each_reflog_ent_reverse(struct ref_store *refs, |
2121 | const char *refname, | |
2122 | each_reflog_ent_fn fn, | |
2123 | void *cb_data) | |
2124 | { | |
e3688bd6 DT |
2125 | return refs->be->for_each_reflog_ent_reverse(refs, refname, |
2126 | fn, cb_data); | |
2127 | } | |
2128 | ||
7d2df051 NTND |
2129 | int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, |
2130 | void *cb_data) | |
2131 | { | |
23a3f0cb | 2132 | return refs_for_each_reflog_ent_reverse(get_main_ref_store(the_repository), |
7d2df051 NTND |
2133 | refname, fn, cb_data); |
2134 | } | |
2135 | ||
2136 | int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname, | |
2137 | each_reflog_ent_fn fn, void *cb_data) | |
2138 | { | |
2139 | return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data); | |
2140 | } | |
2141 | ||
e3688bd6 DT |
2142 | int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, |
2143 | void *cb_data) | |
2144 | { | |
23a3f0cb | 2145 | return refs_for_each_reflog_ent(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2146 | fn, cb_data); |
2147 | } | |
e3688bd6 | 2148 | |
7d2df051 NTND |
2149 | int refs_reflog_exists(struct ref_store *refs, const char *refname) |
2150 | { | |
2151 | return refs->be->reflog_exists(refs, refname); | |
e3688bd6 DT |
2152 | } |
2153 | ||
2154 | int reflog_exists(const char *refname) | |
2155 | { | |
23a3f0cb | 2156 | return refs_reflog_exists(get_main_ref_store(the_repository), refname); |
7d2df051 | 2157 | } |
e3688bd6 | 2158 | |
7d2df051 NTND |
2159 | int refs_create_reflog(struct ref_store *refs, const char *refname, |
2160 | int force_create, struct strbuf *err) | |
2161 | { | |
2162 | return refs->be->create_reflog(refs, refname, force_create, err); | |
e3688bd6 DT |
2163 | } |
2164 | ||
2165 | int safe_create_reflog(const char *refname, int force_create, | |
2166 | struct strbuf *err) | |
2167 | { | |
23a3f0cb | 2168 | return refs_create_reflog(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2169 | force_create, err); |
2170 | } | |
e3688bd6 | 2171 | |
7d2df051 NTND |
2172 | int refs_delete_reflog(struct ref_store *refs, const char *refname) |
2173 | { | |
2174 | return refs->be->delete_reflog(refs, refname); | |
e3688bd6 DT |
2175 | } |
2176 | ||
2177 | int delete_reflog(const char *refname) | |
2178 | { | |
23a3f0cb | 2179 | return refs_delete_reflog(get_main_ref_store(the_repository), refname); |
7d2df051 | 2180 | } |
e3688bd6 | 2181 | |
7d2df051 | 2182 | int refs_reflog_expire(struct ref_store *refs, |
0155f710 | 2183 | const char *refname, const struct object_id *oid, |
7d2df051 NTND |
2184 | unsigned int flags, |
2185 | reflog_expiry_prepare_fn prepare_fn, | |
2186 | reflog_expiry_should_prune_fn should_prune_fn, | |
2187 | reflog_expiry_cleanup_fn cleanup_fn, | |
2188 | void *policy_cb_data) | |
2189 | { | |
0155f710 | 2190 | return refs->be->reflog_expire(refs, refname, oid, flags, |
7d2df051 NTND |
2191 | prepare_fn, should_prune_fn, |
2192 | cleanup_fn, policy_cb_data); | |
e3688bd6 DT |
2193 | } |
2194 | ||
0155f710 | 2195 | int reflog_expire(const char *refname, const struct object_id *oid, |
e3688bd6 DT |
2196 | unsigned int flags, |
2197 | reflog_expiry_prepare_fn prepare_fn, | |
2198 | reflog_expiry_should_prune_fn should_prune_fn, | |
2199 | reflog_expiry_cleanup_fn cleanup_fn, | |
2200 | void *policy_cb_data) | |
2201 | { | |
23a3f0cb | 2202 | return refs_reflog_expire(get_main_ref_store(the_repository), |
0155f710 | 2203 | refname, oid, flags, |
7d2df051 NTND |
2204 | prepare_fn, should_prune_fn, |
2205 | cleanup_fn, policy_cb_data); | |
e3688bd6 | 2206 | } |
fc681463 DT |
2207 | |
2208 | int initial_ref_transaction_commit(struct ref_transaction *transaction, | |
2209 | struct strbuf *err) | |
2210 | { | |
c0fe4e8b | 2211 | struct ref_store *refs = transaction->ref_store; |
fc681463 DT |
2212 | |
2213 | return refs->be->initial_transaction_commit(refs, transaction, err); | |
2214 | } | |
a27dcf89 | 2215 | |
64da4199 MH |
2216 | int refs_delete_refs(struct ref_store *refs, const char *msg, |
2217 | struct string_list *refnames, unsigned int flags) | |
a27dcf89 | 2218 | { |
64da4199 | 2219 | return refs->be->delete_refs(refs, msg, refnames, flags); |
a27dcf89 | 2220 | } |
9b6b40d9 | 2221 | |
64da4199 MH |
2222 | int delete_refs(const char *msg, struct string_list *refnames, |
2223 | unsigned int flags) | |
9b6b40d9 | 2224 | { |
23a3f0cb | 2225 | return refs_delete_refs(get_main_ref_store(the_repository), msg, refnames, flags); |
7d2df051 | 2226 | } |
9b6b40d9 | 2227 | |
7d2df051 NTND |
2228 | int refs_rename_ref(struct ref_store *refs, const char *oldref, |
2229 | const char *newref, const char *logmsg) | |
2230 | { | |
9b6b40d9 DT |
2231 | return refs->be->rename_ref(refs, oldref, newref, logmsg); |
2232 | } | |
7d2df051 NTND |
2233 | |
2234 | int rename_ref(const char *oldref, const char *newref, const char *logmsg) | |
2235 | { | |
23a3f0cb | 2236 | return refs_rename_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
7d2df051 | 2237 | } |
52d59cc6 SD |
2238 | |
2239 | int refs_copy_existing_ref(struct ref_store *refs, const char *oldref, | |
2240 | const char *newref, const char *logmsg) | |
2241 | { | |
2242 | return refs->be->copy_ref(refs, oldref, newref, logmsg); | |
2243 | } | |
2244 | ||
2245 | int copy_existing_ref(const char *oldref, const char *newref, const char *logmsg) | |
2246 | { | |
23a3f0cb | 2247 | return refs_copy_existing_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
52d59cc6 | 2248 | } |