Restore default verbosity for http fetches.
[git/git.git] / remote.c
CommitLineData
5751f490
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1#include "cache.h"
2#include "remote.h"
3#include "refs.h"
4
5static struct remote **remotes;
6static int allocated_remotes;
7
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8static struct branch **branches;
9static int allocated_branches;
10
11static struct branch *current_branch;
12static const char *default_remote_name;
13
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14#define BUF_SIZE (2048)
15static char buffer[BUF_SIZE];
16
17static 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
26static 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
28b91f8a 35static void add_url(struct remote *remote, const char *url)
5751f490 36{
28b91f8a
SP
37 int nr = remote->url_nr + 1;
38 remote->url =
39 xrealloc(remote->url, nr * sizeof(char *));
40 remote->url[nr-1] = url;
41 remote->url_nr = nr;
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DB
42}
43
44static 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
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76static 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
85static 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
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124static 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;
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DB
140 } else if (!prefixcmp(buffer, "Pull:")) {
141 value_list = 2;
142 s = buffer + 5;
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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:
28b91f8a 157 add_url(remote, xstrdup(s));
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DB
158 break;
159 case 1:
160 add_push_refspec(remote, xstrdup(s));
161 break;
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DB
162 case 2:
163 add_fetch_refspec(remote, xstrdup(s));
164 break;
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165 }
166 }
167 fclose(f);
168}
169
170static void read_branches_file(struct remote *remote)
171{
172 const char *slash = strchr(remote->name, '/');
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173 char *frag;
174 char *branch;
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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);
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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 }
28b91f8a 209 add_url(remote, p);
cf818348 210 add_fetch_refspec(remote, branch);
d71ab174 211 remote->fetch_tags = 1; /* always auto-follow */
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DB
212}
213
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214static int handle_config(const char *key, const char *value)
215{
216 const char *name;
217 const char *subkey;
218 struct remote *remote;
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DB
219 struct branch *branch;
220 if (!prefixcmp(key, "branch.")) {
221 name = key + 7;
222 subkey = strrchr(name, '.');
223 branch = make_branch(name, subkey - name);
224 if (!subkey)
225 return 0;
226 if (!value)
227 return 0;
228 if (!strcmp(subkey, ".remote")) {
229 branch->remote_name = xstrdup(value);
230 if (branch == current_branch)
231 default_remote_name = branch->remote_name;
232 } else if (!strcmp(subkey, ".merge"))
233 add_merge(branch, xstrdup(value));
234 return 0;
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DB
235 }
236 if (prefixcmp(key, "remote."))
237 return 0;
238 name = key + 7;
239 subkey = strrchr(name, '.');
240 if (!subkey)
241 return error("Config with no key for remote %s", name);
242 if (*subkey == '/') {
243 warning("Config remote shorthand cannot begin with '/': %s", name);
244 return 0;
245 }
246 remote = make_remote(name, subkey - name);
247 if (!value) {
248 /* if we ever have a boolean variable, e.g. "remote.*.disabled"
249 * [remote "frotz"]
250 * disabled
251 * is a valid way to set it to true; we get NULL in value so
252 * we need to handle it here.
253 *
254 * if (!strcmp(subkey, ".disabled")) {
255 * val = git_config_bool(key, value);
256 * return 0;
257 * } else
258 *
259 */
260 return 0; /* ignore unknown booleans */
261 }
262 if (!strcmp(subkey, ".url")) {
28b91f8a 263 add_url(remote, xstrdup(value));
5751f490
DB
264 } else if (!strcmp(subkey, ".push")) {
265 add_push_refspec(remote, xstrdup(value));
5d46c9d4
DB
266 } else if (!strcmp(subkey, ".fetch")) {
267 add_fetch_refspec(remote, xstrdup(value));
5751f490
DB
268 } else if (!strcmp(subkey, ".receivepack")) {
269 if (!remote->receivepack)
270 remote->receivepack = xstrdup(value);
271 else
272 error("more than one receivepack given, using the first");
0012ba21
DB
273 } else if (!strcmp(subkey, ".uploadpack")) {
274 if (!remote->uploadpack)
275 remote->uploadpack = xstrdup(value);
276 else
277 error("more than one uploadpack given, using the first");
d71ab174
DB
278 } else if (!strcmp(subkey, ".tagopt")) {
279 if (!strcmp(value, "--no-tags"))
280 remote->fetch_tags = -1;
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DB
281 }
282 return 0;
283}
284
285static void read_config(void)
286{
287 unsigned char sha1[20];
288 const char *head_ref;
289 int flag;
290 if (default_remote_name) // did this already
291 return;
292 default_remote_name = xstrdup("origin");
293 current_branch = NULL;
294 head_ref = resolve_ref("HEAD", sha1, 0, &flag);
295 if (head_ref && (flag & REF_ISSYMREF) &&
296 !prefixcmp(head_ref, "refs/heads/")) {
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DB
297 current_branch =
298 make_branch(head_ref + strlen("refs/heads/"), 0);
5751f490
DB
299 }
300 git_config(handle_config);
301}
302
d71ab174 303struct refspec *parse_ref_spec(int nr_refspec, const char **refspec)
6b62816c
DB
304{
305 int i;
306 struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
307 for (i = 0; i < nr_refspec; i++) {
308 const char *sp, *ep, *gp;
309 sp = refspec[i];
310 if (*sp == '+') {
311 rs[i].force = 1;
312 sp++;
313 }
314 gp = strchr(sp, '*');
315 ep = strchr(sp, ':');
316 if (gp && ep && gp > ep)
317 gp = NULL;
318 if (ep) {
319 if (ep[1]) {
320 const char *glob = strchr(ep + 1, '*');
321 if (!glob)
322 gp = NULL;
323 if (gp)
324 rs[i].dst = xstrndup(ep + 1,
325 glob - ep - 1);
326 else
327 rs[i].dst = xstrdup(ep + 1);
328 }
329 } else {
330 ep = sp + strlen(sp);
331 }
332 if (gp) {
333 rs[i].pattern = 1;
334 ep = gp;
335 }
336 rs[i].src = xstrndup(sp, ep - sp);
337 }
338 return rs;
339}
340
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DB
341struct remote *remote_get(const char *name)
342{
343 struct remote *ret;
344
345 read_config();
346 if (!name)
347 name = default_remote_name;
348 ret = make_remote(name, 0);
349 if (name[0] != '/') {
28b91f8a 350 if (!ret->url)
5751f490 351 read_remotes_file(ret);
28b91f8a 352 if (!ret->url)
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DB
353 read_branches_file(ret);
354 }
28b91f8a
SP
355 if (!ret->url)
356 add_url(ret, name);
357 if (!ret->url)
5751f490 358 return NULL;
5d46c9d4 359 ret->fetch = parse_ref_spec(ret->fetch_refspec_nr, ret->fetch_refspec);
6b62816c 360 ret->push = parse_ref_spec(ret->push_refspec_nr, ret->push_refspec);
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DB
361 return ret;
362}
6b62816c 363
b42f6927
JS
364int for_each_remote(each_remote_fn fn, void *priv)
365{
366 int i, result = 0;
367 read_config();
368 for (i = 0; i < allocated_remotes && !result; i++) {
369 struct remote *r = remotes[i];
370 if (!r)
371 continue;
372 if (!r->fetch)
373 r->fetch = parse_ref_spec(r->fetch_refspec_nr,
374 r->fetch_refspec);
375 if (!r->push)
376 r->push = parse_ref_spec(r->push_refspec_nr,
377 r->push_refspec);
378 result = fn(r, priv);
379 }
380 return result;
381}
382
28b91f8a 383int remote_has_url(struct remote *remote, const char *url)
5d46c9d4
DB
384{
385 int i;
28b91f8a
SP
386 for (i = 0; i < remote->url_nr; i++) {
387 if (!strcmp(remote->url[i], url))
5d46c9d4
DB
388 return 1;
389 }
390 return 0;
391}
392
cf818348
DB
393/*
394 * Returns true if, under the matching rules for fetching, name is the
395 * same as the given full name.
396 */
397static int ref_matches_abbrev(const char *name, const char *full)
398{
399 if (!prefixcmp(name, "refs/") || !strcmp(name, "HEAD"))
400 return !strcmp(name, full);
401 if (prefixcmp(full, "refs/"))
402 return 0;
403 if (!prefixcmp(name, "heads/") ||
404 !prefixcmp(name, "tags/") ||
405 !prefixcmp(name, "remotes/"))
406 return !strcmp(name, full + 5);
407 if (prefixcmp(full + 5, "heads/"))
408 return 0;
409 return !strcmp(full + 11, name);
410}
411
5d46c9d4
DB
412int remote_find_tracking(struct remote *remote, struct refspec *refspec)
413{
b42f6927
JS
414 int find_src = refspec->src == NULL;
415 char *needle, **result;
5d46c9d4 416 int i;
b42f6927
JS
417
418 if (find_src) {
009c5bcd 419 if (!refspec->dst)
b42f6927
JS
420 return error("find_tracking: need either src or dst");
421 needle = refspec->dst;
422 result = &refspec->src;
423 } else {
424 needle = refspec->src;
425 result = &refspec->dst;
426 }
427
5d46c9d4
DB
428 for (i = 0; i < remote->fetch_refspec_nr; i++) {
429 struct refspec *fetch = &remote->fetch[i];
b42f6927
JS
430 const char *key = find_src ? fetch->dst : fetch->src;
431 const char *value = find_src ? fetch->src : fetch->dst;
5d46c9d4
DB
432 if (!fetch->dst)
433 continue;
434 if (fetch->pattern) {
b42f6927
JS
435 if (!prefixcmp(needle, key)) {
436 *result = xmalloc(strlen(value) +
437 strlen(needle) -
438 strlen(key) + 1);
439 strcpy(*result, value);
440 strcpy(*result + strlen(value),
441 needle + strlen(key));
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DB
442 refspec->force = fetch->force;
443 return 0;
444 }
b42f6927
JS
445 } else if (!strcmp(needle, key)) {
446 *result = xstrdup(value);
447 refspec->force = fetch->force;
448 return 0;
5d46c9d4
DB
449 }
450 }
5d46c9d4
DB
451 return -1;
452}
453
dfd255dd
DB
454struct ref *alloc_ref(unsigned namelen)
455{
456 struct ref *ret = xmalloc(sizeof(struct ref) + namelen);
457 memset(ret, 0, sizeof(struct ref) + namelen);
458 return ret;
459}
460
d71ab174
DB
461static struct ref *copy_ref(struct ref *ref)
462{
463 struct ref *ret = xmalloc(sizeof(struct ref) + strlen(ref->name) + 1);
464 memcpy(ret, ref, sizeof(struct ref) + strlen(ref->name) + 1);
465 ret->next = NULL;
466 return ret;
467}
468
dfd255dd
DB
469void free_refs(struct ref *ref)
470{
471 struct ref *next;
472 while (ref) {
473 next = ref->next;
474 if (ref->peer_ref)
475 free(ref->peer_ref);
476 free(ref);
477 ref = next;
478 }
479}
480
6b62816c
DB
481static int count_refspec_match(const char *pattern,
482 struct ref *refs,
483 struct ref **matched_ref)
484{
485 int patlen = strlen(pattern);
486 struct ref *matched_weak = NULL;
487 struct ref *matched = NULL;
488 int weak_match = 0;
489 int match = 0;
490
491 for (weak_match = match = 0; refs; refs = refs->next) {
492 char *name = refs->name;
493 int namelen = strlen(name);
6b62816c
DB
494
495 if (namelen < patlen ||
496 memcmp(name + namelen - patlen, pattern, patlen))
497 continue;
498 if (namelen != patlen && name[namelen - patlen - 1] != '/')
499 continue;
500
501 /* A match is "weak" if it is with refs outside
502 * heads or tags, and did not specify the pattern
503 * in full (e.g. "refs/remotes/origin/master") or at
504 * least from the toplevel (e.g. "remotes/origin/master");
505 * otherwise "git push $URL master" would result in
506 * ambiguity between remotes/origin/master and heads/master
507 * at the remote site.
508 */
509 if (namelen != patlen &&
510 patlen != namelen - 5 &&
511 prefixcmp(name, "refs/heads/") &&
512 prefixcmp(name, "refs/tags/")) {
513 /* We want to catch the case where only weak
514 * matches are found and there are multiple
515 * matches, and where more than one strong
516 * matches are found, as ambiguous. One
517 * strong match with zero or more weak matches
518 * are acceptable as a unique match.
519 */
520 matched_weak = refs;
521 weak_match++;
522 }
523 else {
524 matched = refs;
525 match++;
526 }
527 }
528 if (!matched) {
529 *matched_ref = matched_weak;
530 return weak_match;
531 }
532 else {
533 *matched_ref = matched;
534 return match;
535 }
536}
537
1d735267 538static void tail_link_ref(struct ref *ref, struct ref ***tail)
6b62816c
DB
539{
540 **tail = ref;
1d735267
DB
541 while (ref->next)
542 ref = ref->next;
6b62816c 543 *tail = &ref->next;
6b62816c
DB
544}
545
546static struct ref *try_explicit_object_name(const char *name)
547{
548 unsigned char sha1[20];
549 struct ref *ref;
550 int len;
551
552 if (!*name) {
dfd255dd 553 ref = alloc_ref(20);
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DB
554 strcpy(ref->name, "(delete)");
555 hashclr(ref->new_sha1);
556 return ref;
557 }
558 if (get_sha1(name, sha1))
559 return NULL;
560 len = strlen(name) + 1;
dfd255dd 561 ref = alloc_ref(len);
6b62816c
DB
562 memcpy(ref->name, name, len);
563 hashcpy(ref->new_sha1, sha1);
564 return ref;
565}
566
1d735267 567static struct ref *make_linked_ref(const char *name, struct ref ***tail)
6b62816c 568{
1d735267 569 struct ref *ret;
163f0ee5 570 size_t len;
6b62816c 571
163f0ee5 572 len = strlen(name) + 1;
1d735267
DB
573 ret = alloc_ref(len);
574 memcpy(ret->name, name, len);
575 tail_link_ref(ret, tail);
576 return ret;
163f0ee5 577}
8558fd9e 578
54a8ad92
JH
579static int match_explicit(struct ref *src, struct ref *dst,
580 struct ref ***dst_tail,
581 struct refspec *rs,
582 int errs)
6b62816c 583{
54a8ad92 584 struct ref *matched_src, *matched_dst;
8558fd9e 585
54a8ad92 586 const char *dst_value = rs->dst;
6b62816c 587
54a8ad92
JH
588 if (rs->pattern)
589 return errs;
8558fd9e 590
54a8ad92
JH
591 matched_src = matched_dst = NULL;
592 switch (count_refspec_match(rs->src, src, &matched_src)) {
593 case 1:
594 break;
595 case 0:
596 /* The source could be in the get_sha1() format
597 * not a reference name. :refs/other is a
598 * way to delete 'other' ref at the remote end.
599 */
600 matched_src = try_explicit_object_name(rs->src);
7dfee372
SP
601 if (!matched_src)
602 error("src refspec %s does not match any.", rs->src);
54a8ad92
JH
603 break;
604 default:
3c8b7df1 605 matched_src = NULL;
7dfee372 606 error("src refspec %s matches more than one.", rs->src);
54a8ad92
JH
607 break;
608 }
3c8b7df1
JH
609
610 if (!matched_src)
611 errs = 1;
612
4491e62a
SP
613 if (!dst_value) {
614 if (!matched_src)
615 return errs;
1ed10b88 616 dst_value = matched_src->name;
4491e62a 617 }
3c8b7df1 618
54a8ad92
JH
619 switch (count_refspec_match(dst_value, dst, &matched_dst)) {
620 case 1:
621 break;
622 case 0:
163f0ee5 623 if (!memcmp(dst_value, "refs/", 5))
1d735267 624 matched_dst = make_linked_ref(dst_value, dst_tail);
3c8b7df1 625 else
54a8ad92
JH
626 error("dst refspec %s does not match any "
627 "existing ref on the remote and does "
628 "not start with refs/.", dst_value);
54a8ad92
JH
629 break;
630 default:
3c8b7df1 631 matched_dst = NULL;
54a8ad92
JH
632 error("dst refspec %s matches more than one.",
633 dst_value);
634 break;
635 }
009c5bcd 636 if (errs || !matched_dst)
3c8b7df1 637 return 1;
54a8ad92
JH
638 if (matched_dst->peer_ref) {
639 errs = 1;
640 error("dst ref %s receives from more than one src.",
641 matched_dst->name);
6b62816c 642 }
54a8ad92
JH
643 else {
644 matched_dst->peer_ref = matched_src;
645 matched_dst->force = rs->force;
6b62816c 646 }
54a8ad92
JH
647 return errs;
648}
649
650static int match_explicit_refs(struct ref *src, struct ref *dst,
651 struct ref ***dst_tail, struct refspec *rs,
652 int rs_nr)
653{
654 int i, errs;
655 for (i = errs = 0; i < rs_nr; i++)
656 errs |= match_explicit(src, dst, dst_tail, &rs[i], errs);
6b62816c
DB
657 return -errs;
658}
659
660static struct ref *find_ref_by_name(struct ref *list, const char *name)
661{
662 for ( ; list; list = list->next)
663 if (!strcmp(list->name, name))
664 return list;
665 return NULL;
666}
667
6e66bf3c
AR
668static const struct refspec *check_pattern_match(const struct refspec *rs,
669 int rs_nr,
670 const struct ref *src)
8558fd9e
DB
671{
672 int i;
8558fd9e
DB
673 for (i = 0; i < rs_nr; i++) {
674 if (rs[i].pattern && !prefixcmp(src->name, rs[i].src))
6e66bf3c 675 return rs + i;
8558fd9e 676 }
6e66bf3c 677 return NULL;
8558fd9e
DB
678}
679
54a8ad92
JH
680/*
681 * Note. This is used only by "push"; refspec matching rules for
682 * push and fetch are subtly different, so do not try to reuse it
683 * without thinking.
684 */
6b62816c
DB
685int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
686 int nr_refspec, char **refspec, int all)
687{
688 struct refspec *rs =
689 parse_ref_spec(nr_refspec, (const char **) refspec);
690
8558fd9e
DB
691 if (match_explicit_refs(src, dst, dst_tail, rs, nr_refspec))
692 return -1;
6b62816c
DB
693
694 /* pick the remainder */
695 for ( ; src; src = src->next) {
696 struct ref *dst_peer;
6e66bf3c
AR
697 const struct refspec *pat = NULL;
698 char *dst_name;
6b62816c
DB
699 if (src->peer_ref)
700 continue;
6e66bf3c
AR
701 if (nr_refspec) {
702 pat = check_pattern_match(rs, nr_refspec, src);
703 if (!pat)
704 continue;
705 }
098e711e
JH
706 else if (prefixcmp(src->name, "refs/heads/"))
707 /*
708 * "matching refs"; traditionally we pushed everything
709 * including refs outside refs/heads/ hierarchy, but
710 * that does not make much sense these days.
711 */
712 continue;
8558fd9e 713
6e66bf3c 714 if (pat) {
efd8f793
DB
715 const char *dst_side = pat->dst ? pat->dst : pat->src;
716 dst_name = xmalloc(strlen(dst_side) +
6e66bf3c
AR
717 strlen(src->name) -
718 strlen(pat->src) + 2);
efd8f793 719 strcpy(dst_name, dst_side);
6e66bf3c
AR
720 strcat(dst_name, src->name + strlen(pat->src));
721 } else
aa32eedc 722 dst_name = xstrdup(src->name);
6e66bf3c 723 dst_peer = find_ref_by_name(dst, dst_name);
8558fd9e
DB
724 if (dst_peer && dst_peer->peer_ref)
725 /* We're already sending something to this ref. */
6e66bf3c 726 goto free_name;
8558fd9e
DB
727 if (!dst_peer && !nr_refspec && !all)
728 /* Remote doesn't have it, and we have no
729 * explicit pattern, and we don't have
730 * --all. */
6e66bf3c 731 goto free_name;
6b62816c
DB
732 if (!dst_peer) {
733 /* Create a new one and link it */
1d735267 734 dst_peer = make_linked_ref(dst_name, dst_tail);
6b62816c 735 hashcpy(dst_peer->new_sha1, src->new_sha1);
6b62816c
DB
736 }
737 dst_peer->peer_ref = src;
6e66bf3c
AR
738 free_name:
739 free(dst_name);
6b62816c
DB
740 }
741 return 0;
742}
cf818348
DB
743
744struct branch *branch_get(const char *name)
745{
746 struct branch *ret;
747
748 read_config();
749 if (!name || !*name || !strcmp(name, "HEAD"))
750 ret = current_branch;
751 else
752 ret = make_branch(name, 0);
753 if (ret && ret->remote_name) {
754 ret->remote = remote_get(ret->remote_name);
755 if (ret->merge_nr) {
756 int i;
757 ret->merge = xcalloc(sizeof(*ret->merge),
758 ret->merge_nr);
759 for (i = 0; i < ret->merge_nr; i++) {
760 ret->merge[i] = xcalloc(1, sizeof(**ret->merge));
761 ret->merge[i]->src = xstrdup(ret->merge_name[i]);
762 remote_find_tracking(ret->remote,
763 ret->merge[i]);
764 }
765 }
766 }
767 return ret;
768}
769
770int branch_has_merge_config(struct branch *branch)
771{
772 return branch && !!branch->merge;
773}
774
85682c19
SP
775int branch_merge_matches(struct branch *branch,
776 int i,
777 const char *refname)
cf818348 778{
85682c19 779 if (!branch || i < 0 || i >= branch->merge_nr)
cf818348 780 return 0;
85682c19 781 return ref_matches_abbrev(branch->merge[i]->src, refname);
cf818348 782}
d71ab174
DB
783
784static struct ref *get_expanded_map(struct ref *remote_refs,
785 const struct refspec *refspec)
786{
787 struct ref *ref;
788 struct ref *ret = NULL;
789 struct ref **tail = &ret;
790
791 int remote_prefix_len = strlen(refspec->src);
792 int local_prefix_len = strlen(refspec->dst);
793
794 for (ref = remote_refs; ref; ref = ref->next) {
795 if (strchr(ref->name, '^'))
796 continue; /* a dereference item */
797 if (!prefixcmp(ref->name, refspec->src)) {
798 char *match;
799 struct ref *cpy = copy_ref(ref);
800 match = ref->name + remote_prefix_len;
801
802 cpy->peer_ref = alloc_ref(local_prefix_len +
803 strlen(match) + 1);
804 sprintf(cpy->peer_ref->name, "%s%s",
805 refspec->dst, match);
806 if (refspec->force)
807 cpy->peer_ref->force = 1;
808 *tail = cpy;
809 tail = &cpy->next;
810 }
811 }
812
813 return ret;
814}
815
816static struct ref *find_ref_by_name_abbrev(struct ref *refs, const char *name)
817{
818 struct ref *ref;
819 for (ref = refs; ref; ref = ref->next) {
820 if (ref_matches_abbrev(name, ref->name))
821 return ref;
822 }
823 return NULL;
824}
825
826struct ref *get_remote_ref(struct ref *remote_refs, const char *name)
827{
828 struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
829
830 if (!ref)
831 die("Couldn't find remote ref %s\n", name);
832
833 return copy_ref(ref);
834}
835
836static struct ref *get_local_ref(const char *name)
837{
838 struct ref *ret;
839 if (!name)
840 return NULL;
841
842 if (!prefixcmp(name, "refs/")) {
843 ret = alloc_ref(strlen(name) + 1);
844 strcpy(ret->name, name);
845 return ret;
846 }
847
848 if (!prefixcmp(name, "heads/") ||
849 !prefixcmp(name, "tags/") ||
850 !prefixcmp(name, "remotes/")) {
851 ret = alloc_ref(strlen(name) + 6);
852 sprintf(ret->name, "refs/%s", name);
853 return ret;
854 }
855
856 ret = alloc_ref(strlen(name) + 12);
857 sprintf(ret->name, "refs/heads/%s", name);
858 return ret;
859}
860
861int get_fetch_map(struct ref *remote_refs,
862 const struct refspec *refspec,
863 struct ref ***tail)
864{
865 struct ref *ref_map, *rm;
866
867 if (refspec->pattern) {
868 ref_map = get_expanded_map(remote_refs, refspec);
869 } else {
870 ref_map = get_remote_ref(remote_refs,
871 refspec->src[0] ?
872 refspec->src : "HEAD");
873
874 ref_map->peer_ref = get_local_ref(refspec->dst);
27e13374 875 if (ref_map->peer_ref && refspec->force)
d71ab174
DB
876 ref_map->peer_ref->force = 1;
877 }
878
879 for (rm = ref_map; rm; rm = rm->next) {
880 if (rm->peer_ref && check_ref_format(rm->peer_ref->name + 5))
881 die("* refusing to create funny ref '%s' locally",
882 rm->peer_ref->name);
883 }
884
885 tail_link_ref(ref_map, tail);
886
887 return 0;
888}