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Commit | Line | Data |
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5751f490 DB |
1 | #include "cache.h" |
2 | #include "remote.h" | |
3 | #include "refs.h" | |
4 | ||
5 | static struct remote **remotes; | |
6 | static int allocated_remotes; | |
7 | ||
cf818348 DB |
8 | static struct branch **branches; |
9 | static int allocated_branches; | |
10 | ||
11 | static struct branch *current_branch; | |
12 | static const char *default_remote_name; | |
13 | ||
5751f490 DB |
14 | #define BUF_SIZE (2048) |
15 | static char buffer[BUF_SIZE]; | |
16 | ||
17 | static void add_push_refspec(struct remote *remote, const char *ref) | |
18 | { | |
19 | int nr = remote->push_refspec_nr + 1; | |
20 | remote->push_refspec = | |
21 | xrealloc(remote->push_refspec, nr * sizeof(char *)); | |
22 | remote->push_refspec[nr-1] = ref; | |
23 | remote->push_refspec_nr = nr; | |
24 | } | |
25 | ||
5d46c9d4 DB |
26 | static void add_fetch_refspec(struct remote *remote, const char *ref) |
27 | { | |
28 | int nr = remote->fetch_refspec_nr + 1; | |
29 | remote->fetch_refspec = | |
30 | xrealloc(remote->fetch_refspec, nr * sizeof(char *)); | |
31 | remote->fetch_refspec[nr-1] = ref; | |
32 | remote->fetch_refspec_nr = nr; | |
33 | } | |
34 | ||
5751f490 DB |
35 | static void add_uri(struct remote *remote, const char *uri) |
36 | { | |
37 | int nr = remote->uri_nr + 1; | |
38 | remote->uri = | |
39 | xrealloc(remote->uri, nr * sizeof(char *)); | |
40 | remote->uri[nr-1] = uri; | |
41 | remote->uri_nr = nr; | |
42 | } | |
43 | ||
44 | static struct remote *make_remote(const char *name, int len) | |
45 | { | |
46 | int i, empty = -1; | |
47 | ||
48 | for (i = 0; i < allocated_remotes; i++) { | |
49 | if (!remotes[i]) { | |
50 | if (empty < 0) | |
51 | empty = i; | |
52 | } else { | |
53 | if (len ? (!strncmp(name, remotes[i]->name, len) && | |
54 | !remotes[i]->name[len]) : | |
55 | !strcmp(name, remotes[i]->name)) | |
56 | return remotes[i]; | |
57 | } | |
58 | } | |
59 | ||
60 | if (empty < 0) { | |
61 | empty = allocated_remotes; | |
62 | allocated_remotes += allocated_remotes ? allocated_remotes : 1; | |
63 | remotes = xrealloc(remotes, | |
64 | sizeof(*remotes) * allocated_remotes); | |
65 | memset(remotes + empty, 0, | |
66 | (allocated_remotes - empty) * sizeof(*remotes)); | |
67 | } | |
68 | remotes[empty] = xcalloc(1, sizeof(struct remote)); | |
69 | if (len) | |
70 | remotes[empty]->name = xstrndup(name, len); | |
71 | else | |
72 | remotes[empty]->name = xstrdup(name); | |
73 | return remotes[empty]; | |
74 | } | |
75 | ||
cf818348 DB |
76 | static void add_merge(struct branch *branch, const char *name) |
77 | { | |
78 | int nr = branch->merge_nr + 1; | |
79 | branch->merge_name = | |
80 | xrealloc(branch->merge_name, nr * sizeof(char *)); | |
81 | branch->merge_name[nr-1] = name; | |
82 | branch->merge_nr = nr; | |
83 | } | |
84 | ||
85 | static struct branch *make_branch(const char *name, int len) | |
86 | { | |
87 | int i, empty = -1; | |
88 | char *refname; | |
89 | ||
90 | for (i = 0; i < allocated_branches; i++) { | |
91 | if (!branches[i]) { | |
92 | if (empty < 0) | |
93 | empty = i; | |
94 | } else { | |
95 | if (len ? (!strncmp(name, branches[i]->name, len) && | |
96 | !branches[i]->name[len]) : | |
97 | !strcmp(name, branches[i]->name)) | |
98 | return branches[i]; | |
99 | } | |
100 | } | |
101 | ||
102 | if (empty < 0) { | |
103 | empty = allocated_branches; | |
104 | allocated_branches += allocated_branches ? allocated_branches : 1; | |
105 | branches = xrealloc(branches, | |
106 | sizeof(*branches) * allocated_branches); | |
107 | memset(branches + empty, 0, | |
108 | (allocated_branches - empty) * sizeof(*branches)); | |
109 | } | |
110 | branches[empty] = xcalloc(1, sizeof(struct branch)); | |
111 | if (len) | |
112 | branches[empty]->name = xstrndup(name, len); | |
113 | else | |
114 | branches[empty]->name = xstrdup(name); | |
115 | refname = malloc(strlen(name) + strlen("refs/heads/") + 1); | |
116 | strcpy(refname, "refs/heads/"); | |
117 | strcpy(refname + strlen("refs/heads/"), | |
118 | branches[empty]->name); | |
119 | branches[empty]->refname = refname; | |
120 | ||
121 | return branches[empty]; | |
122 | } | |
123 | ||
5751f490 DB |
124 | static void read_remotes_file(struct remote *remote) |
125 | { | |
126 | FILE *f = fopen(git_path("remotes/%s", remote->name), "r"); | |
127 | ||
128 | if (!f) | |
129 | return; | |
130 | while (fgets(buffer, BUF_SIZE, f)) { | |
131 | int value_list; | |
132 | char *s, *p; | |
133 | ||
134 | if (!prefixcmp(buffer, "URL:")) { | |
135 | value_list = 0; | |
136 | s = buffer + 4; | |
137 | } else if (!prefixcmp(buffer, "Push:")) { | |
138 | value_list = 1; | |
139 | s = buffer + 5; | |
5d46c9d4 DB |
140 | } else if (!prefixcmp(buffer, "Pull:")) { |
141 | value_list = 2; | |
142 | s = buffer + 5; | |
5751f490 DB |
143 | } else |
144 | continue; | |
145 | ||
146 | while (isspace(*s)) | |
147 | s++; | |
148 | if (!*s) | |
149 | continue; | |
150 | ||
151 | p = s + strlen(s); | |
152 | while (isspace(p[-1])) | |
153 | *--p = 0; | |
154 | ||
155 | switch (value_list) { | |
156 | case 0: | |
157 | add_uri(remote, xstrdup(s)); | |
158 | break; | |
159 | case 1: | |
160 | add_push_refspec(remote, xstrdup(s)); | |
161 | break; | |
5d46c9d4 DB |
162 | case 2: |
163 | add_fetch_refspec(remote, xstrdup(s)); | |
164 | break; | |
5751f490 DB |
165 | } |
166 | } | |
167 | fclose(f); | |
168 | } | |
169 | ||
170 | static void read_branches_file(struct remote *remote) | |
171 | { | |
172 | const char *slash = strchr(remote->name, '/'); | |
cf818348 DB |
173 | char *frag; |
174 | char *branch; | |
5751f490 DB |
175 | int n = slash ? slash - remote->name : 1000; |
176 | FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r"); | |
177 | char *s, *p; | |
178 | int len; | |
179 | ||
180 | if (!f) | |
181 | return; | |
182 | s = fgets(buffer, BUF_SIZE, f); | |
183 | fclose(f); | |
184 | if (!s) | |
185 | return; | |
186 | while (isspace(*s)) | |
187 | s++; | |
188 | if (!*s) | |
189 | return; | |
190 | p = s + strlen(s); | |
191 | while (isspace(p[-1])) | |
192 | *--p = 0; | |
193 | len = p - s; | |
194 | if (slash) | |
195 | len += strlen(slash); | |
196 | p = xmalloc(len + 1); | |
197 | strcpy(p, s); | |
198 | if (slash) | |
199 | strcat(p, slash); | |
cf818348 DB |
200 | frag = strchr(p, '#'); |
201 | if (frag) { | |
202 | *(frag++) = '\0'; | |
203 | branch = xmalloc(strlen(frag) + 12); | |
204 | strcpy(branch, "refs/heads/"); | |
205 | strcat(branch, frag); | |
206 | } else { | |
207 | branch = "refs/heads/master"; | |
208 | } | |
5751f490 | 209 | add_uri(remote, p); |
cf818348 | 210 | add_fetch_refspec(remote, branch); |
5751f490 DB |
211 | } |
212 | ||
5751f490 DB |
213 | static int handle_config(const char *key, const char *value) |
214 | { | |
215 | const char *name; | |
216 | const char *subkey; | |
217 | struct remote *remote; | |
cf818348 DB |
218 | struct branch *branch; |
219 | if (!prefixcmp(key, "branch.")) { | |
220 | name = key + 7; | |
221 | subkey = strrchr(name, '.'); | |
222 | branch = make_branch(name, subkey - name); | |
223 | if (!subkey) | |
224 | return 0; | |
225 | if (!value) | |
226 | return 0; | |
227 | if (!strcmp(subkey, ".remote")) { | |
228 | branch->remote_name = xstrdup(value); | |
229 | if (branch == current_branch) | |
230 | default_remote_name = branch->remote_name; | |
231 | } else if (!strcmp(subkey, ".merge")) | |
232 | add_merge(branch, xstrdup(value)); | |
233 | return 0; | |
5751f490 DB |
234 | } |
235 | if (prefixcmp(key, "remote.")) | |
236 | return 0; | |
237 | name = key + 7; | |
238 | subkey = strrchr(name, '.'); | |
239 | if (!subkey) | |
240 | return error("Config with no key for remote %s", name); | |
241 | if (*subkey == '/') { | |
242 | warning("Config remote shorthand cannot begin with '/': %s", name); | |
243 | return 0; | |
244 | } | |
245 | remote = make_remote(name, subkey - name); | |
246 | if (!value) { | |
247 | /* if we ever have a boolean variable, e.g. "remote.*.disabled" | |
248 | * [remote "frotz"] | |
249 | * disabled | |
250 | * is a valid way to set it to true; we get NULL in value so | |
251 | * we need to handle it here. | |
252 | * | |
253 | * if (!strcmp(subkey, ".disabled")) { | |
254 | * val = git_config_bool(key, value); | |
255 | * return 0; | |
256 | * } else | |
257 | * | |
258 | */ | |
259 | return 0; /* ignore unknown booleans */ | |
260 | } | |
261 | if (!strcmp(subkey, ".url")) { | |
262 | add_uri(remote, xstrdup(value)); | |
263 | } else if (!strcmp(subkey, ".push")) { | |
264 | add_push_refspec(remote, xstrdup(value)); | |
5d46c9d4 DB |
265 | } else if (!strcmp(subkey, ".fetch")) { |
266 | add_fetch_refspec(remote, xstrdup(value)); | |
5751f490 DB |
267 | } else if (!strcmp(subkey, ".receivepack")) { |
268 | if (!remote->receivepack) | |
269 | remote->receivepack = xstrdup(value); | |
270 | else | |
271 | error("more than one receivepack given, using the first"); | |
0012ba21 DB |
272 | } else if (!strcmp(subkey, ".uploadpack")) { |
273 | if (!remote->uploadpack) | |
274 | remote->uploadpack = xstrdup(value); | |
275 | else | |
276 | error("more than one uploadpack given, using the first"); | |
5751f490 DB |
277 | } |
278 | return 0; | |
279 | } | |
280 | ||
281 | static void read_config(void) | |
282 | { | |
283 | unsigned char sha1[20]; | |
284 | const char *head_ref; | |
285 | int flag; | |
286 | if (default_remote_name) // did this already | |
287 | return; | |
288 | default_remote_name = xstrdup("origin"); | |
289 | current_branch = NULL; | |
290 | head_ref = resolve_ref("HEAD", sha1, 0, &flag); | |
291 | if (head_ref && (flag & REF_ISSYMREF) && | |
292 | !prefixcmp(head_ref, "refs/heads/")) { | |
cf818348 DB |
293 | current_branch = |
294 | make_branch(head_ref + strlen("refs/heads/"), 0); | |
5751f490 DB |
295 | } |
296 | git_config(handle_config); | |
297 | } | |
298 | ||
6b62816c DB |
299 | static struct refspec *parse_ref_spec(int nr_refspec, const char **refspec) |
300 | { | |
301 | int i; | |
302 | struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec); | |
303 | for (i = 0; i < nr_refspec; i++) { | |
304 | const char *sp, *ep, *gp; | |
305 | sp = refspec[i]; | |
306 | if (*sp == '+') { | |
307 | rs[i].force = 1; | |
308 | sp++; | |
309 | } | |
310 | gp = strchr(sp, '*'); | |
311 | ep = strchr(sp, ':'); | |
312 | if (gp && ep && gp > ep) | |
313 | gp = NULL; | |
314 | if (ep) { | |
315 | if (ep[1]) { | |
316 | const char *glob = strchr(ep + 1, '*'); | |
317 | if (!glob) | |
318 | gp = NULL; | |
319 | if (gp) | |
320 | rs[i].dst = xstrndup(ep + 1, | |
321 | glob - ep - 1); | |
322 | else | |
323 | rs[i].dst = xstrdup(ep + 1); | |
324 | } | |
325 | } else { | |
326 | ep = sp + strlen(sp); | |
327 | } | |
328 | if (gp) { | |
329 | rs[i].pattern = 1; | |
330 | ep = gp; | |
331 | } | |
332 | rs[i].src = xstrndup(sp, ep - sp); | |
333 | } | |
334 | return rs; | |
335 | } | |
336 | ||
5751f490 DB |
337 | struct remote *remote_get(const char *name) |
338 | { | |
339 | struct remote *ret; | |
340 | ||
341 | read_config(); | |
342 | if (!name) | |
343 | name = default_remote_name; | |
344 | ret = make_remote(name, 0); | |
345 | if (name[0] != '/') { | |
346 | if (!ret->uri) | |
347 | read_remotes_file(ret); | |
348 | if (!ret->uri) | |
349 | read_branches_file(ret); | |
350 | } | |
351 | if (!ret->uri) | |
352 | add_uri(ret, name); | |
353 | if (!ret->uri) | |
354 | return NULL; | |
5d46c9d4 | 355 | ret->fetch = parse_ref_spec(ret->fetch_refspec_nr, ret->fetch_refspec); |
6b62816c | 356 | ret->push = parse_ref_spec(ret->push_refspec_nr, ret->push_refspec); |
5751f490 DB |
357 | return ret; |
358 | } | |
6b62816c | 359 | |
b42f6927 JS |
360 | int for_each_remote(each_remote_fn fn, void *priv) |
361 | { | |
362 | int i, result = 0; | |
363 | read_config(); | |
364 | for (i = 0; i < allocated_remotes && !result; i++) { | |
365 | struct remote *r = remotes[i]; | |
366 | if (!r) | |
367 | continue; | |
368 | if (!r->fetch) | |
369 | r->fetch = parse_ref_spec(r->fetch_refspec_nr, | |
370 | r->fetch_refspec); | |
371 | if (!r->push) | |
372 | r->push = parse_ref_spec(r->push_refspec_nr, | |
373 | r->push_refspec); | |
374 | result = fn(r, priv); | |
375 | } | |
376 | return result; | |
377 | } | |
378 | ||
5d46c9d4 DB |
379 | int remote_has_uri(struct remote *remote, const char *uri) |
380 | { | |
381 | int i; | |
382 | for (i = 0; i < remote->uri_nr; i++) { | |
383 | if (!strcmp(remote->uri[i], uri)) | |
384 | return 1; | |
385 | } | |
386 | return 0; | |
387 | } | |
388 | ||
cf818348 DB |
389 | /* |
390 | * Returns true if, under the matching rules for fetching, name is the | |
391 | * same as the given full name. | |
392 | */ | |
393 | static int ref_matches_abbrev(const char *name, const char *full) | |
394 | { | |
395 | if (!prefixcmp(name, "refs/") || !strcmp(name, "HEAD")) | |
396 | return !strcmp(name, full); | |
397 | if (prefixcmp(full, "refs/")) | |
398 | return 0; | |
399 | if (!prefixcmp(name, "heads/") || | |
400 | !prefixcmp(name, "tags/") || | |
401 | !prefixcmp(name, "remotes/")) | |
402 | return !strcmp(name, full + 5); | |
403 | if (prefixcmp(full + 5, "heads/")) | |
404 | return 0; | |
405 | return !strcmp(full + 11, name); | |
406 | } | |
407 | ||
5d46c9d4 DB |
408 | int remote_find_tracking(struct remote *remote, struct refspec *refspec) |
409 | { | |
b42f6927 JS |
410 | int find_src = refspec->src == NULL; |
411 | char *needle, **result; | |
5d46c9d4 | 412 | int i; |
b42f6927 JS |
413 | |
414 | if (find_src) { | |
415 | if (refspec->dst == NULL) | |
416 | return error("find_tracking: need either src or dst"); | |
417 | needle = refspec->dst; | |
418 | result = &refspec->src; | |
419 | } else { | |
420 | needle = refspec->src; | |
421 | result = &refspec->dst; | |
422 | } | |
423 | ||
5d46c9d4 DB |
424 | for (i = 0; i < remote->fetch_refspec_nr; i++) { |
425 | struct refspec *fetch = &remote->fetch[i]; | |
b42f6927 JS |
426 | const char *key = find_src ? fetch->dst : fetch->src; |
427 | const char *value = find_src ? fetch->src : fetch->dst; | |
5d46c9d4 DB |
428 | if (!fetch->dst) |
429 | continue; | |
430 | if (fetch->pattern) { | |
b42f6927 JS |
431 | if (!prefixcmp(needle, key)) { |
432 | *result = xmalloc(strlen(value) + | |
433 | strlen(needle) - | |
434 | strlen(key) + 1); | |
435 | strcpy(*result, value); | |
436 | strcpy(*result + strlen(value), | |
437 | needle + strlen(key)); | |
5d46c9d4 DB |
438 | refspec->force = fetch->force; |
439 | return 0; | |
440 | } | |
b42f6927 JS |
441 | } else if (!strcmp(needle, key)) { |
442 | *result = xstrdup(value); | |
443 | refspec->force = fetch->force; | |
444 | return 0; | |
5d46c9d4 DB |
445 | } |
446 | } | |
5d46c9d4 DB |
447 | return -1; |
448 | } | |
449 | ||
dfd255dd DB |
450 | struct ref *alloc_ref(unsigned namelen) |
451 | { | |
452 | struct ref *ret = xmalloc(sizeof(struct ref) + namelen); | |
453 | memset(ret, 0, sizeof(struct ref) + namelen); | |
454 | return ret; | |
455 | } | |
456 | ||
457 | void free_refs(struct ref *ref) | |
458 | { | |
459 | struct ref *next; | |
460 | while (ref) { | |
461 | next = ref->next; | |
462 | if (ref->peer_ref) | |
463 | free(ref->peer_ref); | |
464 | free(ref); | |
465 | ref = next; | |
466 | } | |
467 | } | |
468 | ||
6b62816c DB |
469 | static int count_refspec_match(const char *pattern, |
470 | struct ref *refs, | |
471 | struct ref **matched_ref) | |
472 | { | |
473 | int patlen = strlen(pattern); | |
474 | struct ref *matched_weak = NULL; | |
475 | struct ref *matched = NULL; | |
476 | int weak_match = 0; | |
477 | int match = 0; | |
478 | ||
479 | for (weak_match = match = 0; refs; refs = refs->next) { | |
480 | char *name = refs->name; | |
481 | int namelen = strlen(name); | |
6b62816c DB |
482 | |
483 | if (namelen < patlen || | |
484 | memcmp(name + namelen - patlen, pattern, patlen)) | |
485 | continue; | |
486 | if (namelen != patlen && name[namelen - patlen - 1] != '/') | |
487 | continue; | |
488 | ||
489 | /* A match is "weak" if it is with refs outside | |
490 | * heads or tags, and did not specify the pattern | |
491 | * in full (e.g. "refs/remotes/origin/master") or at | |
492 | * least from the toplevel (e.g. "remotes/origin/master"); | |
493 | * otherwise "git push $URL master" would result in | |
494 | * ambiguity between remotes/origin/master and heads/master | |
495 | * at the remote site. | |
496 | */ | |
497 | if (namelen != patlen && | |
498 | patlen != namelen - 5 && | |
499 | prefixcmp(name, "refs/heads/") && | |
500 | prefixcmp(name, "refs/tags/")) { | |
501 | /* We want to catch the case where only weak | |
502 | * matches are found and there are multiple | |
503 | * matches, and where more than one strong | |
504 | * matches are found, as ambiguous. One | |
505 | * strong match with zero or more weak matches | |
506 | * are acceptable as a unique match. | |
507 | */ | |
508 | matched_weak = refs; | |
509 | weak_match++; | |
510 | } | |
511 | else { | |
512 | matched = refs; | |
513 | match++; | |
514 | } | |
515 | } | |
516 | if (!matched) { | |
517 | *matched_ref = matched_weak; | |
518 | return weak_match; | |
519 | } | |
520 | else { | |
521 | *matched_ref = matched; | |
522 | return match; | |
523 | } | |
524 | } | |
525 | ||
1d735267 | 526 | static void tail_link_ref(struct ref *ref, struct ref ***tail) |
6b62816c DB |
527 | { |
528 | **tail = ref; | |
1d735267 DB |
529 | while (ref->next) |
530 | ref = ref->next; | |
6b62816c | 531 | *tail = &ref->next; |
6b62816c DB |
532 | } |
533 | ||
534 | static struct ref *try_explicit_object_name(const char *name) | |
535 | { | |
536 | unsigned char sha1[20]; | |
537 | struct ref *ref; | |
538 | int len; | |
539 | ||
540 | if (!*name) { | |
dfd255dd | 541 | ref = alloc_ref(20); |
6b62816c DB |
542 | strcpy(ref->name, "(delete)"); |
543 | hashclr(ref->new_sha1); | |
544 | return ref; | |
545 | } | |
546 | if (get_sha1(name, sha1)) | |
547 | return NULL; | |
548 | len = strlen(name) + 1; | |
dfd255dd | 549 | ref = alloc_ref(len); |
6b62816c DB |
550 | memcpy(ref->name, name, len); |
551 | hashcpy(ref->new_sha1, sha1); | |
552 | return ref; | |
553 | } | |
554 | ||
1d735267 | 555 | static struct ref *make_linked_ref(const char *name, struct ref ***tail) |
6b62816c | 556 | { |
1d735267 | 557 | struct ref *ret; |
163f0ee5 | 558 | size_t len; |
6b62816c | 559 | |
163f0ee5 | 560 | len = strlen(name) + 1; |
1d735267 DB |
561 | ret = alloc_ref(len); |
562 | memcpy(ret->name, name, len); | |
563 | tail_link_ref(ret, tail); | |
564 | return ret; | |
163f0ee5 | 565 | } |
8558fd9e | 566 | |
54a8ad92 JH |
567 | static int match_explicit(struct ref *src, struct ref *dst, |
568 | struct ref ***dst_tail, | |
569 | struct refspec *rs, | |
570 | int errs) | |
6b62816c | 571 | { |
54a8ad92 | 572 | struct ref *matched_src, *matched_dst; |
8558fd9e | 573 | |
54a8ad92 | 574 | const char *dst_value = rs->dst; |
6b62816c | 575 | |
54a8ad92 JH |
576 | if (rs->pattern) |
577 | return errs; | |
8558fd9e | 578 | |
54a8ad92 JH |
579 | matched_src = matched_dst = NULL; |
580 | switch (count_refspec_match(rs->src, src, &matched_src)) { | |
581 | case 1: | |
582 | break; | |
583 | case 0: | |
584 | /* The source could be in the get_sha1() format | |
585 | * not a reference name. :refs/other is a | |
586 | * way to delete 'other' ref at the remote end. | |
587 | */ | |
588 | matched_src = try_explicit_object_name(rs->src); | |
589 | if (matched_src) | |
6b62816c | 590 | break; |
54a8ad92 JH |
591 | error("src refspec %s does not match any.", |
592 | rs->src); | |
593 | break; | |
594 | default: | |
3c8b7df1 | 595 | matched_src = NULL; |
54a8ad92 JH |
596 | error("src refspec %s matches more than one.", |
597 | rs->src); | |
598 | break; | |
599 | } | |
3c8b7df1 JH |
600 | |
601 | if (!matched_src) | |
602 | errs = 1; | |
603 | ||
604 | if (dst_value == NULL) | |
1ed10b88 | 605 | dst_value = matched_src->name; |
3c8b7df1 | 606 | |
54a8ad92 JH |
607 | switch (count_refspec_match(dst_value, dst, &matched_dst)) { |
608 | case 1: | |
609 | break; | |
610 | case 0: | |
163f0ee5 | 611 | if (!memcmp(dst_value, "refs/", 5)) |
1d735267 | 612 | matched_dst = make_linked_ref(dst_value, dst_tail); |
3c8b7df1 | 613 | else |
54a8ad92 JH |
614 | error("dst refspec %s does not match any " |
615 | "existing ref on the remote and does " | |
616 | "not start with refs/.", dst_value); | |
54a8ad92 JH |
617 | break; |
618 | default: | |
3c8b7df1 | 619 | matched_dst = NULL; |
54a8ad92 JH |
620 | error("dst refspec %s matches more than one.", |
621 | dst_value); | |
622 | break; | |
623 | } | |
3c8b7df1 JH |
624 | if (errs || matched_dst == NULL) |
625 | return 1; | |
54a8ad92 JH |
626 | if (matched_dst->peer_ref) { |
627 | errs = 1; | |
628 | error("dst ref %s receives from more than one src.", | |
629 | matched_dst->name); | |
6b62816c | 630 | } |
54a8ad92 JH |
631 | else { |
632 | matched_dst->peer_ref = matched_src; | |
633 | matched_dst->force = rs->force; | |
6b62816c | 634 | } |
54a8ad92 JH |
635 | return errs; |
636 | } | |
637 | ||
638 | static int match_explicit_refs(struct ref *src, struct ref *dst, | |
639 | struct ref ***dst_tail, struct refspec *rs, | |
640 | int rs_nr) | |
641 | { | |
642 | int i, errs; | |
643 | for (i = errs = 0; i < rs_nr; i++) | |
644 | errs |= match_explicit(src, dst, dst_tail, &rs[i], errs); | |
6b62816c DB |
645 | return -errs; |
646 | } | |
647 | ||
648 | static struct ref *find_ref_by_name(struct ref *list, const char *name) | |
649 | { | |
650 | for ( ; list; list = list->next) | |
651 | if (!strcmp(list->name, name)) | |
652 | return list; | |
653 | return NULL; | |
654 | } | |
655 | ||
6e66bf3c AR |
656 | static const struct refspec *check_pattern_match(const struct refspec *rs, |
657 | int rs_nr, | |
658 | const struct ref *src) | |
8558fd9e DB |
659 | { |
660 | int i; | |
8558fd9e DB |
661 | for (i = 0; i < rs_nr; i++) { |
662 | if (rs[i].pattern && !prefixcmp(src->name, rs[i].src)) | |
6e66bf3c | 663 | return rs + i; |
8558fd9e | 664 | } |
6e66bf3c | 665 | return NULL; |
8558fd9e DB |
666 | } |
667 | ||
54a8ad92 JH |
668 | /* |
669 | * Note. This is used only by "push"; refspec matching rules for | |
670 | * push and fetch are subtly different, so do not try to reuse it | |
671 | * without thinking. | |
672 | */ | |
6b62816c DB |
673 | int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail, |
674 | int nr_refspec, char **refspec, int all) | |
675 | { | |
676 | struct refspec *rs = | |
677 | parse_ref_spec(nr_refspec, (const char **) refspec); | |
678 | ||
8558fd9e DB |
679 | if (match_explicit_refs(src, dst, dst_tail, rs, nr_refspec)) |
680 | return -1; | |
6b62816c DB |
681 | |
682 | /* pick the remainder */ | |
683 | for ( ; src; src = src->next) { | |
684 | struct ref *dst_peer; | |
6e66bf3c AR |
685 | const struct refspec *pat = NULL; |
686 | char *dst_name; | |
6b62816c DB |
687 | if (src->peer_ref) |
688 | continue; | |
6e66bf3c AR |
689 | if (nr_refspec) { |
690 | pat = check_pattern_match(rs, nr_refspec, src); | |
691 | if (!pat) | |
692 | continue; | |
693 | } | |
098e711e JH |
694 | else if (prefixcmp(src->name, "refs/heads/")) |
695 | /* | |
696 | * "matching refs"; traditionally we pushed everything | |
697 | * including refs outside refs/heads/ hierarchy, but | |
698 | * that does not make much sense these days. | |
699 | */ | |
700 | continue; | |
8558fd9e | 701 | |
6e66bf3c | 702 | if (pat) { |
efd8f793 DB |
703 | const char *dst_side = pat->dst ? pat->dst : pat->src; |
704 | dst_name = xmalloc(strlen(dst_side) + | |
6e66bf3c AR |
705 | strlen(src->name) - |
706 | strlen(pat->src) + 2); | |
efd8f793 | 707 | strcpy(dst_name, dst_side); |
6e66bf3c AR |
708 | strcat(dst_name, src->name + strlen(pat->src)); |
709 | } else | |
aa32eedc | 710 | dst_name = xstrdup(src->name); |
6e66bf3c | 711 | dst_peer = find_ref_by_name(dst, dst_name); |
8558fd9e DB |
712 | if (dst_peer && dst_peer->peer_ref) |
713 | /* We're already sending something to this ref. */ | |
6e66bf3c | 714 | goto free_name; |
8558fd9e DB |
715 | if (!dst_peer && !nr_refspec && !all) |
716 | /* Remote doesn't have it, and we have no | |
717 | * explicit pattern, and we don't have | |
718 | * --all. */ | |
6e66bf3c | 719 | goto free_name; |
6b62816c DB |
720 | if (!dst_peer) { |
721 | /* Create a new one and link it */ | |
1d735267 | 722 | dst_peer = make_linked_ref(dst_name, dst_tail); |
6b62816c | 723 | hashcpy(dst_peer->new_sha1, src->new_sha1); |
6b62816c DB |
724 | } |
725 | dst_peer->peer_ref = src; | |
6e66bf3c AR |
726 | free_name: |
727 | free(dst_name); | |
6b62816c DB |
728 | } |
729 | return 0; | |
730 | } | |
cf818348 DB |
731 | |
732 | struct branch *branch_get(const char *name) | |
733 | { | |
734 | struct branch *ret; | |
735 | ||
736 | read_config(); | |
737 | if (!name || !*name || !strcmp(name, "HEAD")) | |
738 | ret = current_branch; | |
739 | else | |
740 | ret = make_branch(name, 0); | |
741 | if (ret && ret->remote_name) { | |
742 | ret->remote = remote_get(ret->remote_name); | |
743 | if (ret->merge_nr) { | |
744 | int i; | |
745 | ret->merge = xcalloc(sizeof(*ret->merge), | |
746 | ret->merge_nr); | |
747 | for (i = 0; i < ret->merge_nr; i++) { | |
748 | ret->merge[i] = xcalloc(1, sizeof(**ret->merge)); | |
749 | ret->merge[i]->src = xstrdup(ret->merge_name[i]); | |
750 | remote_find_tracking(ret->remote, | |
751 | ret->merge[i]); | |
752 | } | |
753 | } | |
754 | } | |
755 | return ret; | |
756 | } | |
757 | ||
758 | int branch_has_merge_config(struct branch *branch) | |
759 | { | |
760 | return branch && !!branch->merge; | |
761 | } | |
762 | ||
763 | int branch_merges(struct branch *branch, const char *refname) | |
764 | { | |
765 | int i; | |
766 | if (!branch) | |
767 | return 0; | |
768 | for (i = 0; i < branch->merge_nr; i++) { | |
769 | if (ref_matches_abbrev(branch->merge[i]->src, refname)) | |
770 | return 1; | |
771 | } | |
772 | return 0; | |
773 | } |