]>
Commit | Line | Data |
---|---|---|
5751f490 DB |
1 | #include "cache.h" |
2 | #include "remote.h" | |
3 | #include "refs.h" | |
4 | ||
55029ae4 DB |
5 | struct rewrite { |
6 | const char *base; | |
7 | const char **instead_of; | |
8 | int instead_of_nr; | |
9 | int instead_of_alloc; | |
10 | }; | |
11 | ||
5751f490 | 12 | static struct remote **remotes; |
2d31347b DB |
13 | static int remotes_alloc; |
14 | static int remotes_nr; | |
5751f490 | 15 | |
cf818348 | 16 | static struct branch **branches; |
2d31347b DB |
17 | static int branches_alloc; |
18 | static int branches_nr; | |
cf818348 DB |
19 | |
20 | static struct branch *current_branch; | |
21 | static const char *default_remote_name; | |
22 | ||
55029ae4 DB |
23 | static struct rewrite **rewrite; |
24 | static int rewrite_alloc; | |
25 | static int rewrite_nr; | |
26 | ||
5751f490 DB |
27 | #define BUF_SIZE (2048) |
28 | static char buffer[BUF_SIZE]; | |
29 | ||
55029ae4 DB |
30 | static const char *alias_url(const char *url) |
31 | { | |
32 | int i, j; | |
33 | for (i = 0; i < rewrite_nr; i++) { | |
34 | if (!rewrite[i]) | |
35 | continue; | |
36 | for (j = 0; j < rewrite[i]->instead_of_nr; j++) { | |
37 | if (!prefixcmp(url, rewrite[i]->instead_of[j])) { | |
38 | char *ret = malloc(strlen(rewrite[i]->base) - | |
39 | strlen(rewrite[i]->instead_of[j]) + | |
40 | strlen(url) + 1); | |
41 | strcpy(ret, rewrite[i]->base); | |
42 | strcat(ret, url + strlen(rewrite[i]->instead_of[j])); | |
43 | return ret; | |
44 | } | |
45 | } | |
46 | } | |
47 | return url; | |
48 | } | |
49 | ||
5751f490 DB |
50 | static void add_push_refspec(struct remote *remote, const char *ref) |
51 | { | |
2d31347b DB |
52 | ALLOC_GROW(remote->push_refspec, |
53 | remote->push_refspec_nr + 1, | |
54 | remote->push_refspec_alloc); | |
55 | remote->push_refspec[remote->push_refspec_nr++] = ref; | |
5751f490 DB |
56 | } |
57 | ||
5d46c9d4 DB |
58 | static void add_fetch_refspec(struct remote *remote, const char *ref) |
59 | { | |
2d31347b DB |
60 | ALLOC_GROW(remote->fetch_refspec, |
61 | remote->fetch_refspec_nr + 1, | |
62 | remote->fetch_refspec_alloc); | |
63 | remote->fetch_refspec[remote->fetch_refspec_nr++] = ref; | |
5d46c9d4 DB |
64 | } |
65 | ||
28b91f8a | 66 | static void add_url(struct remote *remote, const char *url) |
5751f490 | 67 | { |
2d31347b DB |
68 | ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc); |
69 | remote->url[remote->url_nr++] = url; | |
5751f490 DB |
70 | } |
71 | ||
55029ae4 DB |
72 | static void add_url_alias(struct remote *remote, const char *url) |
73 | { | |
74 | add_url(remote, alias_url(url)); | |
75 | } | |
76 | ||
5751f490 DB |
77 | static struct remote *make_remote(const char *name, int len) |
78 | { | |
2d31347b DB |
79 | struct remote *ret; |
80 | int i; | |
5751f490 | 81 | |
2d31347b DB |
82 | for (i = 0; i < remotes_nr; i++) { |
83 | if (len ? (!strncmp(name, remotes[i]->name, len) && | |
84 | !remotes[i]->name[len]) : | |
85 | !strcmp(name, remotes[i]->name)) | |
86 | return remotes[i]; | |
5751f490 DB |
87 | } |
88 | ||
2d31347b DB |
89 | ret = xcalloc(1, sizeof(struct remote)); |
90 | ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc); | |
91 | remotes[remotes_nr++] = ret; | |
5751f490 | 92 | if (len) |
2d31347b | 93 | ret->name = xstrndup(name, len); |
5751f490 | 94 | else |
2d31347b DB |
95 | ret->name = xstrdup(name); |
96 | return ret; | |
5751f490 DB |
97 | } |
98 | ||
cf818348 DB |
99 | static void add_merge(struct branch *branch, const char *name) |
100 | { | |
2d31347b DB |
101 | ALLOC_GROW(branch->merge_name, branch->merge_nr + 1, |
102 | branch->merge_alloc); | |
103 | branch->merge_name[branch->merge_nr++] = name; | |
cf818348 DB |
104 | } |
105 | ||
106 | static struct branch *make_branch(const char *name, int len) | |
107 | { | |
2d31347b DB |
108 | struct branch *ret; |
109 | int i; | |
cf818348 DB |
110 | char *refname; |
111 | ||
2d31347b DB |
112 | for (i = 0; i < branches_nr; i++) { |
113 | if (len ? (!strncmp(name, branches[i]->name, len) && | |
114 | !branches[i]->name[len]) : | |
115 | !strcmp(name, branches[i]->name)) | |
116 | return branches[i]; | |
cf818348 DB |
117 | } |
118 | ||
2d31347b DB |
119 | ALLOC_GROW(branches, branches_nr + 1, branches_alloc); |
120 | ret = xcalloc(1, sizeof(struct branch)); | |
121 | branches[branches_nr++] = ret; | |
cf818348 | 122 | if (len) |
2d31347b | 123 | ret->name = xstrndup(name, len); |
cf818348 | 124 | else |
2d31347b | 125 | ret->name = xstrdup(name); |
cf818348 DB |
126 | refname = malloc(strlen(name) + strlen("refs/heads/") + 1); |
127 | strcpy(refname, "refs/heads/"); | |
2d31347b DB |
128 | strcpy(refname + strlen("refs/heads/"), ret->name); |
129 | ret->refname = refname; | |
cf818348 | 130 | |
2d31347b | 131 | return ret; |
cf818348 DB |
132 | } |
133 | ||
55029ae4 DB |
134 | static struct rewrite *make_rewrite(const char *base, int len) |
135 | { | |
136 | struct rewrite *ret; | |
137 | int i; | |
138 | ||
139 | for (i = 0; i < rewrite_nr; i++) { | |
140 | if (len ? (!strncmp(base, rewrite[i]->base, len) && | |
141 | !rewrite[i]->base[len]) : | |
142 | !strcmp(base, rewrite[i]->base)) | |
143 | return rewrite[i]; | |
144 | } | |
145 | ||
146 | ALLOC_GROW(rewrite, rewrite_nr + 1, rewrite_alloc); | |
147 | ret = xcalloc(1, sizeof(struct rewrite)); | |
148 | rewrite[rewrite_nr++] = ret; | |
149 | if (len) | |
150 | ret->base = xstrndup(base, len); | |
151 | else | |
152 | ret->base = xstrdup(base); | |
153 | ||
154 | return ret; | |
155 | } | |
156 | ||
157 | static void add_instead_of(struct rewrite *rewrite, const char *instead_of) | |
158 | { | |
159 | ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc); | |
160 | rewrite->instead_of[rewrite->instead_of_nr++] = instead_of; | |
161 | } | |
162 | ||
5751f490 DB |
163 | static void read_remotes_file(struct remote *remote) |
164 | { | |
165 | FILE *f = fopen(git_path("remotes/%s", remote->name), "r"); | |
166 | ||
167 | if (!f) | |
168 | return; | |
169 | while (fgets(buffer, BUF_SIZE, f)) { | |
170 | int value_list; | |
171 | char *s, *p; | |
172 | ||
173 | if (!prefixcmp(buffer, "URL:")) { | |
174 | value_list = 0; | |
175 | s = buffer + 4; | |
176 | } else if (!prefixcmp(buffer, "Push:")) { | |
177 | value_list = 1; | |
178 | s = buffer + 5; | |
5d46c9d4 DB |
179 | } else if (!prefixcmp(buffer, "Pull:")) { |
180 | value_list = 2; | |
181 | s = buffer + 5; | |
5751f490 DB |
182 | } else |
183 | continue; | |
184 | ||
185 | while (isspace(*s)) | |
186 | s++; | |
187 | if (!*s) | |
188 | continue; | |
189 | ||
190 | p = s + strlen(s); | |
191 | while (isspace(p[-1])) | |
192 | *--p = 0; | |
193 | ||
194 | switch (value_list) { | |
195 | case 0: | |
55029ae4 | 196 | add_url_alias(remote, xstrdup(s)); |
5751f490 DB |
197 | break; |
198 | case 1: | |
199 | add_push_refspec(remote, xstrdup(s)); | |
200 | break; | |
5d46c9d4 DB |
201 | case 2: |
202 | add_fetch_refspec(remote, xstrdup(s)); | |
203 | break; | |
5751f490 DB |
204 | } |
205 | } | |
206 | fclose(f); | |
207 | } | |
208 | ||
209 | static void read_branches_file(struct remote *remote) | |
210 | { | |
211 | const char *slash = strchr(remote->name, '/'); | |
cf818348 DB |
212 | char *frag; |
213 | char *branch; | |
5751f490 DB |
214 | int n = slash ? slash - remote->name : 1000; |
215 | FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r"); | |
216 | char *s, *p; | |
217 | int len; | |
218 | ||
219 | if (!f) | |
220 | return; | |
221 | s = fgets(buffer, BUF_SIZE, f); | |
222 | fclose(f); | |
223 | if (!s) | |
224 | return; | |
225 | while (isspace(*s)) | |
226 | s++; | |
227 | if (!*s) | |
228 | return; | |
229 | p = s + strlen(s); | |
230 | while (isspace(p[-1])) | |
231 | *--p = 0; | |
232 | len = p - s; | |
233 | if (slash) | |
234 | len += strlen(slash); | |
235 | p = xmalloc(len + 1); | |
236 | strcpy(p, s); | |
237 | if (slash) | |
238 | strcat(p, slash); | |
cf818348 DB |
239 | frag = strchr(p, '#'); |
240 | if (frag) { | |
241 | *(frag++) = '\0'; | |
242 | branch = xmalloc(strlen(frag) + 12); | |
243 | strcpy(branch, "refs/heads/"); | |
244 | strcat(branch, frag); | |
245 | } else { | |
246 | branch = "refs/heads/master"; | |
247 | } | |
55029ae4 | 248 | add_url_alias(remote, p); |
cf818348 | 249 | add_fetch_refspec(remote, branch); |
d71ab174 | 250 | remote->fetch_tags = 1; /* always auto-follow */ |
5751f490 DB |
251 | } |
252 | ||
5751f490 DB |
253 | static int handle_config(const char *key, const char *value) |
254 | { | |
255 | const char *name; | |
256 | const char *subkey; | |
257 | struct remote *remote; | |
cf818348 DB |
258 | struct branch *branch; |
259 | if (!prefixcmp(key, "branch.")) { | |
260 | name = key + 7; | |
261 | subkey = strrchr(name, '.'); | |
cf818348 DB |
262 | if (!subkey) |
263 | return 0; | |
896c0535 | 264 | branch = make_branch(name, subkey - name); |
cf818348 | 265 | if (!strcmp(subkey, ".remote")) { |
d2370cc2 JH |
266 | if (!value) |
267 | return config_error_nonbool(key); | |
cf818348 DB |
268 | branch->remote_name = xstrdup(value); |
269 | if (branch == current_branch) | |
270 | default_remote_name = branch->remote_name; | |
d2370cc2 JH |
271 | } else if (!strcmp(subkey, ".merge")) { |
272 | if (!value) | |
273 | return config_error_nonbool(key); | |
cf818348 | 274 | add_merge(branch, xstrdup(value)); |
d2370cc2 | 275 | } |
cf818348 | 276 | return 0; |
5751f490 | 277 | } |
55029ae4 DB |
278 | if (!prefixcmp(key, "url.")) { |
279 | struct rewrite *rewrite; | |
280 | name = key + 5; | |
281 | subkey = strrchr(name, '.'); | |
282 | if (!subkey) | |
283 | return 0; | |
284 | rewrite = make_rewrite(name, subkey - name); | |
285 | if (!strcmp(subkey, ".insteadof")) { | |
286 | if (!value) | |
287 | return config_error_nonbool(key); | |
288 | add_instead_of(rewrite, xstrdup(value)); | |
289 | } | |
290 | } | |
5751f490 DB |
291 | if (prefixcmp(key, "remote.")) |
292 | return 0; | |
293 | name = key + 7; | |
294 | subkey = strrchr(name, '.'); | |
295 | if (!subkey) | |
296 | return error("Config with no key for remote %s", name); | |
297 | if (*subkey == '/') { | |
298 | warning("Config remote shorthand cannot begin with '/': %s", name); | |
299 | return 0; | |
300 | } | |
301 | remote = make_remote(name, subkey - name); | |
302 | if (!value) { | |
303 | /* if we ever have a boolean variable, e.g. "remote.*.disabled" | |
304 | * [remote "frotz"] | |
305 | * disabled | |
306 | * is a valid way to set it to true; we get NULL in value so | |
307 | * we need to handle it here. | |
308 | * | |
309 | * if (!strcmp(subkey, ".disabled")) { | |
310 | * val = git_config_bool(key, value); | |
311 | * return 0; | |
312 | * } else | |
313 | * | |
314 | */ | |
315 | return 0; /* ignore unknown booleans */ | |
316 | } | |
317 | if (!strcmp(subkey, ".url")) { | |
28b91f8a | 318 | add_url(remote, xstrdup(value)); |
5751f490 DB |
319 | } else if (!strcmp(subkey, ".push")) { |
320 | add_push_refspec(remote, xstrdup(value)); | |
5d46c9d4 DB |
321 | } else if (!strcmp(subkey, ".fetch")) { |
322 | add_fetch_refspec(remote, xstrdup(value)); | |
5751f490 DB |
323 | } else if (!strcmp(subkey, ".receivepack")) { |
324 | if (!remote->receivepack) | |
325 | remote->receivepack = xstrdup(value); | |
326 | else | |
327 | error("more than one receivepack given, using the first"); | |
0012ba21 DB |
328 | } else if (!strcmp(subkey, ".uploadpack")) { |
329 | if (!remote->uploadpack) | |
330 | remote->uploadpack = xstrdup(value); | |
331 | else | |
332 | error("more than one uploadpack given, using the first"); | |
d71ab174 DB |
333 | } else if (!strcmp(subkey, ".tagopt")) { |
334 | if (!strcmp(value, "--no-tags")) | |
335 | remote->fetch_tags = -1; | |
14c98218 SV |
336 | } else if (!strcmp(subkey, ".proxy")) { |
337 | remote->http_proxy = xstrdup(value); | |
5751f490 DB |
338 | } |
339 | return 0; | |
340 | } | |
341 | ||
55029ae4 DB |
342 | static void alias_all_urls(void) |
343 | { | |
344 | int i, j; | |
345 | for (i = 0; i < remotes_nr; i++) { | |
346 | if (!remotes[i]) | |
347 | continue; | |
348 | for (j = 0; j < remotes[i]->url_nr; j++) { | |
349 | remotes[i]->url[j] = alias_url(remotes[i]->url[j]); | |
350 | } | |
351 | } | |
352 | } | |
353 | ||
5751f490 DB |
354 | static void read_config(void) |
355 | { | |
356 | unsigned char sha1[20]; | |
357 | const char *head_ref; | |
358 | int flag; | |
359 | if (default_remote_name) // did this already | |
360 | return; | |
361 | default_remote_name = xstrdup("origin"); | |
362 | current_branch = NULL; | |
363 | head_ref = resolve_ref("HEAD", sha1, 0, &flag); | |
364 | if (head_ref && (flag & REF_ISSYMREF) && | |
365 | !prefixcmp(head_ref, "refs/heads/")) { | |
cf818348 DB |
366 | current_branch = |
367 | make_branch(head_ref + strlen("refs/heads/"), 0); | |
5751f490 DB |
368 | } |
369 | git_config(handle_config); | |
55029ae4 | 370 | alias_all_urls(); |
5751f490 DB |
371 | } |
372 | ||
d71ab174 | 373 | struct refspec *parse_ref_spec(int nr_refspec, const char **refspec) |
6b62816c DB |
374 | { |
375 | int i; | |
376 | struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec); | |
377 | for (i = 0; i < nr_refspec; i++) { | |
378 | const char *sp, *ep, *gp; | |
379 | sp = refspec[i]; | |
380 | if (*sp == '+') { | |
381 | rs[i].force = 1; | |
382 | sp++; | |
383 | } | |
384 | gp = strchr(sp, '*'); | |
385 | ep = strchr(sp, ':'); | |
386 | if (gp && ep && gp > ep) | |
387 | gp = NULL; | |
388 | if (ep) { | |
389 | if (ep[1]) { | |
390 | const char *glob = strchr(ep + 1, '*'); | |
391 | if (!glob) | |
392 | gp = NULL; | |
393 | if (gp) | |
394 | rs[i].dst = xstrndup(ep + 1, | |
395 | glob - ep - 1); | |
396 | else | |
397 | rs[i].dst = xstrdup(ep + 1); | |
398 | } | |
399 | } else { | |
400 | ep = sp + strlen(sp); | |
401 | } | |
402 | if (gp) { | |
403 | rs[i].pattern = 1; | |
404 | ep = gp; | |
405 | } | |
406 | rs[i].src = xstrndup(sp, ep - sp); | |
407 | } | |
408 | return rs; | |
409 | } | |
410 | ||
df93e33c DB |
411 | static int valid_remote_nick(const char *name) |
412 | { | |
413 | if (!name[0] || /* not empty */ | |
414 | (name[0] == '.' && /* not "." */ | |
415 | (!name[1] || /* not ".." */ | |
416 | (name[1] == '.' && !name[2])))) | |
417 | return 0; | |
418 | return !strchr(name, '/'); /* no slash */ | |
419 | } | |
420 | ||
5751f490 DB |
421 | struct remote *remote_get(const char *name) |
422 | { | |
423 | struct remote *ret; | |
424 | ||
425 | read_config(); | |
426 | if (!name) | |
427 | name = default_remote_name; | |
428 | ret = make_remote(name, 0); | |
df93e33c | 429 | if (valid_remote_nick(name)) { |
28b91f8a | 430 | if (!ret->url) |
5751f490 | 431 | read_remotes_file(ret); |
28b91f8a | 432 | if (!ret->url) |
5751f490 DB |
433 | read_branches_file(ret); |
434 | } | |
28b91f8a | 435 | if (!ret->url) |
55029ae4 | 436 | add_url_alias(ret, name); |
28b91f8a | 437 | if (!ret->url) |
5751f490 | 438 | return NULL; |
5d46c9d4 | 439 | ret->fetch = parse_ref_spec(ret->fetch_refspec_nr, ret->fetch_refspec); |
6b62816c | 440 | ret->push = parse_ref_spec(ret->push_refspec_nr, ret->push_refspec); |
5751f490 DB |
441 | return ret; |
442 | } | |
6b62816c | 443 | |
b42f6927 JS |
444 | int for_each_remote(each_remote_fn fn, void *priv) |
445 | { | |
446 | int i, result = 0; | |
447 | read_config(); | |
2d31347b | 448 | for (i = 0; i < remotes_nr && !result; i++) { |
b42f6927 JS |
449 | struct remote *r = remotes[i]; |
450 | if (!r) | |
451 | continue; | |
452 | if (!r->fetch) | |
453 | r->fetch = parse_ref_spec(r->fetch_refspec_nr, | |
454 | r->fetch_refspec); | |
455 | if (!r->push) | |
456 | r->push = parse_ref_spec(r->push_refspec_nr, | |
457 | r->push_refspec); | |
458 | result = fn(r, priv); | |
459 | } | |
460 | return result; | |
461 | } | |
462 | ||
2467a4fa DB |
463 | void ref_remove_duplicates(struct ref *ref_map) |
464 | { | |
465 | struct ref **posn; | |
466 | struct ref *next; | |
467 | for (; ref_map; ref_map = ref_map->next) { | |
468 | if (!ref_map->peer_ref) | |
469 | continue; | |
470 | posn = &ref_map->next; | |
471 | while (*posn) { | |
472 | if ((*posn)->peer_ref && | |
473 | !strcmp((*posn)->peer_ref->name, | |
474 | ref_map->peer_ref->name)) { | |
475 | if (strcmp((*posn)->name, ref_map->name)) | |
476 | die("%s tracks both %s and %s", | |
477 | ref_map->peer_ref->name, | |
478 | (*posn)->name, ref_map->name); | |
479 | next = (*posn)->next; | |
480 | free((*posn)->peer_ref); | |
481 | free(*posn); | |
482 | *posn = next; | |
483 | } else { | |
484 | posn = &(*posn)->next; | |
485 | } | |
486 | } | |
487 | } | |
488 | } | |
489 | ||
28b91f8a | 490 | int remote_has_url(struct remote *remote, const char *url) |
5d46c9d4 DB |
491 | { |
492 | int i; | |
28b91f8a SP |
493 | for (i = 0; i < remote->url_nr; i++) { |
494 | if (!strcmp(remote->url[i], url)) | |
5d46c9d4 DB |
495 | return 1; |
496 | } | |
497 | return 0; | |
498 | } | |
499 | ||
500 | int remote_find_tracking(struct remote *remote, struct refspec *refspec) | |
501 | { | |
b42f6927 JS |
502 | int find_src = refspec->src == NULL; |
503 | char *needle, **result; | |
5d46c9d4 | 504 | int i; |
b42f6927 JS |
505 | |
506 | if (find_src) { | |
009c5bcd | 507 | if (!refspec->dst) |
b42f6927 JS |
508 | return error("find_tracking: need either src or dst"); |
509 | needle = refspec->dst; | |
510 | result = &refspec->src; | |
511 | } else { | |
512 | needle = refspec->src; | |
513 | result = &refspec->dst; | |
514 | } | |
515 | ||
5d46c9d4 DB |
516 | for (i = 0; i < remote->fetch_refspec_nr; i++) { |
517 | struct refspec *fetch = &remote->fetch[i]; | |
b42f6927 JS |
518 | const char *key = find_src ? fetch->dst : fetch->src; |
519 | const char *value = find_src ? fetch->src : fetch->dst; | |
5d46c9d4 DB |
520 | if (!fetch->dst) |
521 | continue; | |
522 | if (fetch->pattern) { | |
b42f6927 JS |
523 | if (!prefixcmp(needle, key)) { |
524 | *result = xmalloc(strlen(value) + | |
525 | strlen(needle) - | |
526 | strlen(key) + 1); | |
527 | strcpy(*result, value); | |
528 | strcpy(*result + strlen(value), | |
529 | needle + strlen(key)); | |
5d46c9d4 DB |
530 | refspec->force = fetch->force; |
531 | return 0; | |
532 | } | |
b42f6927 JS |
533 | } else if (!strcmp(needle, key)) { |
534 | *result = xstrdup(value); | |
535 | refspec->force = fetch->force; | |
536 | return 0; | |
5d46c9d4 DB |
537 | } |
538 | } | |
5d46c9d4 DB |
539 | return -1; |
540 | } | |
541 | ||
dfd255dd DB |
542 | struct ref *alloc_ref(unsigned namelen) |
543 | { | |
544 | struct ref *ret = xmalloc(sizeof(struct ref) + namelen); | |
545 | memset(ret, 0, sizeof(struct ref) + namelen); | |
546 | return ret; | |
547 | } | |
548 | ||
4577370e | 549 | static struct ref *copy_ref(const struct ref *ref) |
d71ab174 DB |
550 | { |
551 | struct ref *ret = xmalloc(sizeof(struct ref) + strlen(ref->name) + 1); | |
552 | memcpy(ret, ref, sizeof(struct ref) + strlen(ref->name) + 1); | |
553 | ret->next = NULL; | |
554 | return ret; | |
555 | } | |
556 | ||
4577370e DB |
557 | struct ref *copy_ref_list(const struct ref *ref) |
558 | { | |
559 | struct ref *ret = NULL; | |
560 | struct ref **tail = &ret; | |
561 | while (ref) { | |
562 | *tail = copy_ref(ref); | |
563 | ref = ref->next; | |
564 | tail = &((*tail)->next); | |
565 | } | |
566 | return ret; | |
567 | } | |
568 | ||
dfd255dd DB |
569 | void free_refs(struct ref *ref) |
570 | { | |
571 | struct ref *next; | |
572 | while (ref) { | |
573 | next = ref->next; | |
574 | if (ref->peer_ref) | |
575 | free(ref->peer_ref); | |
576 | free(ref); | |
577 | ref = next; | |
578 | } | |
579 | } | |
580 | ||
6b62816c DB |
581 | static int count_refspec_match(const char *pattern, |
582 | struct ref *refs, | |
583 | struct ref **matched_ref) | |
584 | { | |
585 | int patlen = strlen(pattern); | |
586 | struct ref *matched_weak = NULL; | |
587 | struct ref *matched = NULL; | |
588 | int weak_match = 0; | |
589 | int match = 0; | |
590 | ||
591 | for (weak_match = match = 0; refs; refs = refs->next) { | |
592 | char *name = refs->name; | |
593 | int namelen = strlen(name); | |
6b62816c | 594 | |
ae36bdcf | 595 | if (!refname_match(pattern, name, ref_rev_parse_rules)) |
6b62816c DB |
596 | continue; |
597 | ||
598 | /* A match is "weak" if it is with refs outside | |
599 | * heads or tags, and did not specify the pattern | |
600 | * in full (e.g. "refs/remotes/origin/master") or at | |
601 | * least from the toplevel (e.g. "remotes/origin/master"); | |
602 | * otherwise "git push $URL master" would result in | |
603 | * ambiguity between remotes/origin/master and heads/master | |
604 | * at the remote site. | |
605 | */ | |
606 | if (namelen != patlen && | |
607 | patlen != namelen - 5 && | |
608 | prefixcmp(name, "refs/heads/") && | |
609 | prefixcmp(name, "refs/tags/")) { | |
610 | /* We want to catch the case where only weak | |
611 | * matches are found and there are multiple | |
612 | * matches, and where more than one strong | |
613 | * matches are found, as ambiguous. One | |
614 | * strong match with zero or more weak matches | |
615 | * are acceptable as a unique match. | |
616 | */ | |
617 | matched_weak = refs; | |
618 | weak_match++; | |
619 | } | |
620 | else { | |
621 | matched = refs; | |
622 | match++; | |
623 | } | |
624 | } | |
625 | if (!matched) { | |
626 | *matched_ref = matched_weak; | |
627 | return weak_match; | |
628 | } | |
629 | else { | |
630 | *matched_ref = matched; | |
631 | return match; | |
632 | } | |
633 | } | |
634 | ||
1d735267 | 635 | static void tail_link_ref(struct ref *ref, struct ref ***tail) |
6b62816c DB |
636 | { |
637 | **tail = ref; | |
1d735267 DB |
638 | while (ref->next) |
639 | ref = ref->next; | |
6b62816c | 640 | *tail = &ref->next; |
6b62816c DB |
641 | } |
642 | ||
643 | static struct ref *try_explicit_object_name(const char *name) | |
644 | { | |
645 | unsigned char sha1[20]; | |
646 | struct ref *ref; | |
647 | int len; | |
648 | ||
649 | if (!*name) { | |
dfd255dd | 650 | ref = alloc_ref(20); |
6b62816c DB |
651 | strcpy(ref->name, "(delete)"); |
652 | hashclr(ref->new_sha1); | |
653 | return ref; | |
654 | } | |
655 | if (get_sha1(name, sha1)) | |
656 | return NULL; | |
657 | len = strlen(name) + 1; | |
dfd255dd | 658 | ref = alloc_ref(len); |
6b62816c DB |
659 | memcpy(ref->name, name, len); |
660 | hashcpy(ref->new_sha1, sha1); | |
661 | return ref; | |
662 | } | |
663 | ||
1d735267 | 664 | static struct ref *make_linked_ref(const char *name, struct ref ***tail) |
6b62816c | 665 | { |
1d735267 | 666 | struct ref *ret; |
163f0ee5 | 667 | size_t len; |
6b62816c | 668 | |
163f0ee5 | 669 | len = strlen(name) + 1; |
1d735267 DB |
670 | ret = alloc_ref(len); |
671 | memcpy(ret->name, name, len); | |
672 | tail_link_ref(ret, tail); | |
673 | return ret; | |
163f0ee5 | 674 | } |
8558fd9e | 675 | |
54a8ad92 JH |
676 | static int match_explicit(struct ref *src, struct ref *dst, |
677 | struct ref ***dst_tail, | |
678 | struct refspec *rs, | |
679 | int errs) | |
6b62816c | 680 | { |
54a8ad92 | 681 | struct ref *matched_src, *matched_dst; |
8558fd9e | 682 | |
54a8ad92 | 683 | const char *dst_value = rs->dst; |
6b62816c | 684 | |
54a8ad92 JH |
685 | if (rs->pattern) |
686 | return errs; | |
8558fd9e | 687 | |
54a8ad92 JH |
688 | matched_src = matched_dst = NULL; |
689 | switch (count_refspec_match(rs->src, src, &matched_src)) { | |
690 | case 1: | |
691 | break; | |
692 | case 0: | |
693 | /* The source could be in the get_sha1() format | |
694 | * not a reference name. :refs/other is a | |
695 | * way to delete 'other' ref at the remote end. | |
696 | */ | |
697 | matched_src = try_explicit_object_name(rs->src); | |
7dfee372 SP |
698 | if (!matched_src) |
699 | error("src refspec %s does not match any.", rs->src); | |
54a8ad92 JH |
700 | break; |
701 | default: | |
3c8b7df1 | 702 | matched_src = NULL; |
7dfee372 | 703 | error("src refspec %s matches more than one.", rs->src); |
54a8ad92 JH |
704 | break; |
705 | } | |
3c8b7df1 JH |
706 | |
707 | if (!matched_src) | |
708 | errs = 1; | |
709 | ||
4491e62a SP |
710 | if (!dst_value) { |
711 | if (!matched_src) | |
712 | return errs; | |
1ed10b88 | 713 | dst_value = matched_src->name; |
4491e62a | 714 | } |
3c8b7df1 | 715 | |
54a8ad92 JH |
716 | switch (count_refspec_match(dst_value, dst, &matched_dst)) { |
717 | case 1: | |
718 | break; | |
719 | case 0: | |
163f0ee5 | 720 | if (!memcmp(dst_value, "refs/", 5)) |
1d735267 | 721 | matched_dst = make_linked_ref(dst_value, dst_tail); |
3c8b7df1 | 722 | else |
54a8ad92 JH |
723 | error("dst refspec %s does not match any " |
724 | "existing ref on the remote and does " | |
725 | "not start with refs/.", dst_value); | |
54a8ad92 JH |
726 | break; |
727 | default: | |
3c8b7df1 | 728 | matched_dst = NULL; |
54a8ad92 JH |
729 | error("dst refspec %s matches more than one.", |
730 | dst_value); | |
731 | break; | |
732 | } | |
009c5bcd | 733 | if (errs || !matched_dst) |
3c8b7df1 | 734 | return 1; |
54a8ad92 JH |
735 | if (matched_dst->peer_ref) { |
736 | errs = 1; | |
737 | error("dst ref %s receives from more than one src.", | |
738 | matched_dst->name); | |
6b62816c | 739 | } |
54a8ad92 JH |
740 | else { |
741 | matched_dst->peer_ref = matched_src; | |
742 | matched_dst->force = rs->force; | |
6b62816c | 743 | } |
54a8ad92 JH |
744 | return errs; |
745 | } | |
746 | ||
747 | static int match_explicit_refs(struct ref *src, struct ref *dst, | |
748 | struct ref ***dst_tail, struct refspec *rs, | |
749 | int rs_nr) | |
750 | { | |
751 | int i, errs; | |
752 | for (i = errs = 0; i < rs_nr; i++) | |
753 | errs |= match_explicit(src, dst, dst_tail, &rs[i], errs); | |
6b62816c DB |
754 | return -errs; |
755 | } | |
756 | ||
6e66bf3c AR |
757 | static const struct refspec *check_pattern_match(const struct refspec *rs, |
758 | int rs_nr, | |
759 | const struct ref *src) | |
8558fd9e DB |
760 | { |
761 | int i; | |
8558fd9e DB |
762 | for (i = 0; i < rs_nr; i++) { |
763 | if (rs[i].pattern && !prefixcmp(src->name, rs[i].src)) | |
6e66bf3c | 764 | return rs + i; |
8558fd9e | 765 | } |
6e66bf3c | 766 | return NULL; |
8558fd9e DB |
767 | } |
768 | ||
54a8ad92 JH |
769 | /* |
770 | * Note. This is used only by "push"; refspec matching rules for | |
771 | * push and fetch are subtly different, so do not try to reuse it | |
772 | * without thinking. | |
773 | */ | |
6b62816c | 774 | int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail, |
28b9d6e5 | 775 | int nr_refspec, const char **refspec, int flags) |
6b62816c DB |
776 | { |
777 | struct refspec *rs = | |
778 | parse_ref_spec(nr_refspec, (const char **) refspec); | |
28b9d6e5 AW |
779 | int send_all = flags & MATCH_REFS_ALL; |
780 | int send_mirror = flags & MATCH_REFS_MIRROR; | |
6b62816c | 781 | |
8558fd9e DB |
782 | if (match_explicit_refs(src, dst, dst_tail, rs, nr_refspec)) |
783 | return -1; | |
6b62816c DB |
784 | |
785 | /* pick the remainder */ | |
786 | for ( ; src; src = src->next) { | |
787 | struct ref *dst_peer; | |
6e66bf3c AR |
788 | const struct refspec *pat = NULL; |
789 | char *dst_name; | |
6b62816c DB |
790 | if (src->peer_ref) |
791 | continue; | |
6e66bf3c AR |
792 | if (nr_refspec) { |
793 | pat = check_pattern_match(rs, nr_refspec, src); | |
794 | if (!pat) | |
795 | continue; | |
796 | } | |
28b9d6e5 | 797 | else if (!send_mirror && prefixcmp(src->name, "refs/heads/")) |
098e711e JH |
798 | /* |
799 | * "matching refs"; traditionally we pushed everything | |
800 | * including refs outside refs/heads/ hierarchy, but | |
801 | * that does not make much sense these days. | |
802 | */ | |
803 | continue; | |
8558fd9e | 804 | |
6e66bf3c | 805 | if (pat) { |
efd8f793 DB |
806 | const char *dst_side = pat->dst ? pat->dst : pat->src; |
807 | dst_name = xmalloc(strlen(dst_side) + | |
6e66bf3c AR |
808 | strlen(src->name) - |
809 | strlen(pat->src) + 2); | |
efd8f793 | 810 | strcpy(dst_name, dst_side); |
6e66bf3c AR |
811 | strcat(dst_name, src->name + strlen(pat->src)); |
812 | } else | |
aa32eedc | 813 | dst_name = xstrdup(src->name); |
6e66bf3c | 814 | dst_peer = find_ref_by_name(dst, dst_name); |
8558fd9e DB |
815 | if (dst_peer && dst_peer->peer_ref) |
816 | /* We're already sending something to this ref. */ | |
6e66bf3c | 817 | goto free_name; |
28b9d6e5 AW |
818 | |
819 | if (!dst_peer && !nr_refspec && !(send_all || send_mirror)) | |
820 | /* | |
821 | * Remote doesn't have it, and we have no | |
8558fd9e | 822 | * explicit pattern, and we don't have |
28b9d6e5 AW |
823 | * --all nor --mirror. |
824 | */ | |
6e66bf3c | 825 | goto free_name; |
6b62816c DB |
826 | if (!dst_peer) { |
827 | /* Create a new one and link it */ | |
1d735267 | 828 | dst_peer = make_linked_ref(dst_name, dst_tail); |
6b62816c | 829 | hashcpy(dst_peer->new_sha1, src->new_sha1); |
6b62816c DB |
830 | } |
831 | dst_peer->peer_ref = src; | |
5eb73581 JK |
832 | if (pat) |
833 | dst_peer->force = pat->force; | |
6e66bf3c AR |
834 | free_name: |
835 | free(dst_name); | |
6b62816c DB |
836 | } |
837 | return 0; | |
838 | } | |
cf818348 DB |
839 | |
840 | struct branch *branch_get(const char *name) | |
841 | { | |
842 | struct branch *ret; | |
843 | ||
844 | read_config(); | |
845 | if (!name || !*name || !strcmp(name, "HEAD")) | |
846 | ret = current_branch; | |
847 | else | |
848 | ret = make_branch(name, 0); | |
849 | if (ret && ret->remote_name) { | |
850 | ret->remote = remote_get(ret->remote_name); | |
851 | if (ret->merge_nr) { | |
852 | int i; | |
853 | ret->merge = xcalloc(sizeof(*ret->merge), | |
854 | ret->merge_nr); | |
855 | for (i = 0; i < ret->merge_nr; i++) { | |
856 | ret->merge[i] = xcalloc(1, sizeof(**ret->merge)); | |
857 | ret->merge[i]->src = xstrdup(ret->merge_name[i]); | |
858 | remote_find_tracking(ret->remote, | |
859 | ret->merge[i]); | |
860 | } | |
861 | } | |
862 | } | |
863 | return ret; | |
864 | } | |
865 | ||
866 | int branch_has_merge_config(struct branch *branch) | |
867 | { | |
868 | return branch && !!branch->merge; | |
869 | } | |
870 | ||
85682c19 SP |
871 | int branch_merge_matches(struct branch *branch, |
872 | int i, | |
873 | const char *refname) | |
cf818348 | 874 | { |
85682c19 | 875 | if (!branch || i < 0 || i >= branch->merge_nr) |
cf818348 | 876 | return 0; |
605b4978 | 877 | return refname_match(branch->merge[i]->src, refname, ref_fetch_rules); |
cf818348 | 878 | } |
d71ab174 | 879 | |
4577370e | 880 | static struct ref *get_expanded_map(const struct ref *remote_refs, |
d71ab174 DB |
881 | const struct refspec *refspec) |
882 | { | |
4577370e | 883 | const struct ref *ref; |
d71ab174 DB |
884 | struct ref *ret = NULL; |
885 | struct ref **tail = &ret; | |
886 | ||
887 | int remote_prefix_len = strlen(refspec->src); | |
888 | int local_prefix_len = strlen(refspec->dst); | |
889 | ||
890 | for (ref = remote_refs; ref; ref = ref->next) { | |
891 | if (strchr(ref->name, '^')) | |
892 | continue; /* a dereference item */ | |
893 | if (!prefixcmp(ref->name, refspec->src)) { | |
4577370e | 894 | const char *match; |
d71ab174 DB |
895 | struct ref *cpy = copy_ref(ref); |
896 | match = ref->name + remote_prefix_len; | |
897 | ||
898 | cpy->peer_ref = alloc_ref(local_prefix_len + | |
899 | strlen(match) + 1); | |
900 | sprintf(cpy->peer_ref->name, "%s%s", | |
901 | refspec->dst, match); | |
902 | if (refspec->force) | |
903 | cpy->peer_ref->force = 1; | |
904 | *tail = cpy; | |
905 | tail = &cpy->next; | |
906 | } | |
907 | } | |
908 | ||
909 | return ret; | |
910 | } | |
911 | ||
4577370e | 912 | static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name) |
d71ab174 | 913 | { |
4577370e | 914 | const struct ref *ref; |
d71ab174 | 915 | for (ref = refs; ref; ref = ref->next) { |
605b4978 | 916 | if (refname_match(name, ref->name, ref_fetch_rules)) |
d71ab174 DB |
917 | return ref; |
918 | } | |
919 | return NULL; | |
920 | } | |
921 | ||
4577370e | 922 | struct ref *get_remote_ref(const struct ref *remote_refs, const char *name) |
d71ab174 | 923 | { |
4577370e | 924 | const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name); |
d71ab174 DB |
925 | |
926 | if (!ref) | |
9ad7c5ae | 927 | return NULL; |
d71ab174 DB |
928 | |
929 | return copy_ref(ref); | |
930 | } | |
931 | ||
932 | static struct ref *get_local_ref(const char *name) | |
933 | { | |
934 | struct ref *ret; | |
935 | if (!name) | |
936 | return NULL; | |
937 | ||
938 | if (!prefixcmp(name, "refs/")) { | |
939 | ret = alloc_ref(strlen(name) + 1); | |
940 | strcpy(ret->name, name); | |
941 | return ret; | |
942 | } | |
943 | ||
944 | if (!prefixcmp(name, "heads/") || | |
945 | !prefixcmp(name, "tags/") || | |
946 | !prefixcmp(name, "remotes/")) { | |
947 | ret = alloc_ref(strlen(name) + 6); | |
948 | sprintf(ret->name, "refs/%s", name); | |
949 | return ret; | |
950 | } | |
951 | ||
952 | ret = alloc_ref(strlen(name) + 12); | |
953 | sprintf(ret->name, "refs/heads/%s", name); | |
954 | return ret; | |
955 | } | |
956 | ||
4577370e | 957 | int get_fetch_map(const struct ref *remote_refs, |
d71ab174 | 958 | const struct refspec *refspec, |
9ad7c5ae JH |
959 | struct ref ***tail, |
960 | int missing_ok) | |
d71ab174 DB |
961 | { |
962 | struct ref *ref_map, *rm; | |
963 | ||
964 | if (refspec->pattern) { | |
965 | ref_map = get_expanded_map(remote_refs, refspec); | |
966 | } else { | |
9ad7c5ae JH |
967 | const char *name = refspec->src[0] ? refspec->src : "HEAD"; |
968 | ||
969 | ref_map = get_remote_ref(remote_refs, name); | |
970 | if (!missing_ok && !ref_map) | |
971 | die("Couldn't find remote ref %s", name); | |
972 | if (ref_map) { | |
973 | ref_map->peer_ref = get_local_ref(refspec->dst); | |
974 | if (ref_map->peer_ref && refspec->force) | |
975 | ref_map->peer_ref->force = 1; | |
976 | } | |
d71ab174 DB |
977 | } |
978 | ||
979 | for (rm = ref_map; rm; rm = rm->next) { | |
980 | if (rm->peer_ref && check_ref_format(rm->peer_ref->name + 5)) | |
981 | die("* refusing to create funny ref '%s' locally", | |
982 | rm->peer_ref->name); | |
983 | } | |
984 | ||
8f70a765 AR |
985 | if (ref_map) |
986 | tail_link_ref(ref_map, tail); | |
d71ab174 DB |
987 | |
988 | return 0; | |
989 | } |