Merge branch 'jt/commit-graph-plug-memleak'
[git] / builtin / remote.c
1 #include "builtin.h"
2 #include "config.h"
3 #include "parse-options.h"
4 #include "transport.h"
5 #include "remote.h"
6 #include "string-list.h"
7 #include "strbuf.h"
8 #include "run-command.h"
9 #include "rebase.h"
10 #include "refs.h"
11 #include "refspec.h"
12 #include "object-store.h"
13 #include "argv-array.h"
14 #include "commit-reach.h"
15
16 static const char * const builtin_remote_usage[] = {
17         N_("git remote [-v | --verbose]"),
18         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
19         N_("git remote rename <old> <new>"),
20         N_("git remote remove <name>"),
21         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
22         N_("git remote [-v | --verbose] show [-n] <name>"),
23         N_("git remote prune [-n | --dry-run] <name>"),
24         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
25         N_("git remote set-branches [--add] <name> <branch>..."),
26         N_("git remote get-url [--push] [--all] <name>"),
27         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
28         N_("git remote set-url --add <name> <newurl>"),
29         N_("git remote set-url --delete <name> <url>"),
30         NULL
31 };
32
33 static const char * const builtin_remote_add_usage[] = {
34         N_("git remote add [<options>] <name> <url>"),
35         NULL
36 };
37
38 static const char * const builtin_remote_rename_usage[] = {
39         N_("git remote rename <old> <new>"),
40         NULL
41 };
42
43 static const char * const builtin_remote_rm_usage[] = {
44         N_("git remote remove <name>"),
45         NULL
46 };
47
48 static const char * const builtin_remote_sethead_usage[] = {
49         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
50         NULL
51 };
52
53 static const char * const builtin_remote_setbranches_usage[] = {
54         N_("git remote set-branches <name> <branch>..."),
55         N_("git remote set-branches --add <name> <branch>..."),
56         NULL
57 };
58
59 static const char * const builtin_remote_show_usage[] = {
60         N_("git remote show [<options>] <name>"),
61         NULL
62 };
63
64 static const char * const builtin_remote_prune_usage[] = {
65         N_("git remote prune [<options>] <name>"),
66         NULL
67 };
68
69 static const char * const builtin_remote_update_usage[] = {
70         N_("git remote update [<options>] [<group> | <remote>]..."),
71         NULL
72 };
73
74 static const char * const builtin_remote_geturl_usage[] = {
75         N_("git remote get-url [--push] [--all] <name>"),
76         NULL
77 };
78
79 static const char * const builtin_remote_seturl_usage[] = {
80         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
81         N_("git remote set-url --add <name> <newurl>"),
82         N_("git remote set-url --delete <name> <url>"),
83         NULL
84 };
85
86 #define GET_REF_STATES (1<<0)
87 #define GET_HEAD_NAMES (1<<1)
88 #define GET_PUSH_REF_STATES (1<<2)
89
90 static int verbose;
91
92 static int fetch_remote(const char *name)
93 {
94         const char *argv[] = { "fetch", name, NULL, NULL };
95         if (verbose) {
96                 argv[1] = "-v";
97                 argv[2] = name;
98         }
99         printf_ln(_("Updating %s"), name);
100         if (run_command_v_opt(argv, RUN_GIT_CMD))
101                 return error(_("Could not fetch %s"), name);
102         return 0;
103 }
104
105 enum {
106         TAGS_UNSET = 0,
107         TAGS_DEFAULT = 1,
108         TAGS_SET = 2
109 };
110
111 #define MIRROR_NONE 0
112 #define MIRROR_FETCH 1
113 #define MIRROR_PUSH 2
114 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
115
116 static void add_branch(const char *key, const char *branchname,
117                        const char *remotename, int mirror, struct strbuf *tmp)
118 {
119         strbuf_reset(tmp);
120         strbuf_addch(tmp, '+');
121         if (mirror)
122                 strbuf_addf(tmp, "refs/%s:refs/%s",
123                                 branchname, branchname);
124         else
125                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
126                                 branchname, remotename, branchname);
127         git_config_set_multivar(key, tmp->buf, "^$", 0);
128 }
129
130 static const char mirror_advice[] =
131 N_("--mirror is dangerous and deprecated; please\n"
132    "\t use --mirror=fetch or --mirror=push instead");
133
134 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
135 {
136         unsigned *mirror = opt->value;
137         if (not)
138                 *mirror = MIRROR_NONE;
139         else if (!arg) {
140                 warning("%s", _(mirror_advice));
141                 *mirror = MIRROR_BOTH;
142         }
143         else if (!strcmp(arg, "fetch"))
144                 *mirror = MIRROR_FETCH;
145         else if (!strcmp(arg, "push"))
146                 *mirror = MIRROR_PUSH;
147         else
148                 return error(_("unknown mirror argument: %s"), arg);
149         return 0;
150 }
151
152 static int add(int argc, const char **argv)
153 {
154         int fetch = 0, fetch_tags = TAGS_DEFAULT;
155         unsigned mirror = MIRROR_NONE;
156         struct string_list track = STRING_LIST_INIT_NODUP;
157         const char *master = NULL;
158         struct remote *remote;
159         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
160         const char *name, *url;
161         int i;
162
163         struct option options[] = {
164                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
165                 OPT_SET_INT(0, "tags", &fetch_tags,
166                             N_("import all tags and associated objects when fetching"),
167                             TAGS_SET),
168                 OPT_SET_INT(0, NULL, &fetch_tags,
169                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
170                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
171                                 N_("branch(es) to track")),
172                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
173                 OPT_CALLBACK_F(0, "mirror", &mirror, "(push|fetch)",
174                         N_("set up remote as a mirror to push to or fetch from"),
175                         PARSE_OPT_OPTARG | PARSE_OPT_COMP_ARG, parse_mirror_opt),
176                 OPT_END()
177         };
178
179         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
180                              0);
181
182         if (argc != 2)
183                 usage_with_options(builtin_remote_add_usage, options);
184
185         if (mirror && master)
186                 die(_("specifying a master branch makes no sense with --mirror"));
187         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
188                 die(_("specifying branches to track makes sense only with fetch mirrors"));
189
190         name = argv[0];
191         url = argv[1];
192
193         remote = remote_get(name);
194         if (remote_is_configured(remote, 1))
195                 die(_("remote %s already exists."), name);
196
197         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
198         if (!valid_fetch_refspec(buf2.buf))
199                 die(_("'%s' is not a valid remote name"), name);
200
201         strbuf_addf(&buf, "remote.%s.url", name);
202         git_config_set(buf.buf, url);
203
204         if (!mirror || mirror & MIRROR_FETCH) {
205                 strbuf_reset(&buf);
206                 strbuf_addf(&buf, "remote.%s.fetch", name);
207                 if (track.nr == 0)
208                         string_list_append(&track, "*");
209                 for (i = 0; i < track.nr; i++) {
210                         add_branch(buf.buf, track.items[i].string,
211                                    name, mirror, &buf2);
212                 }
213         }
214
215         if (mirror & MIRROR_PUSH) {
216                 strbuf_reset(&buf);
217                 strbuf_addf(&buf, "remote.%s.mirror", name);
218                 git_config_set(buf.buf, "true");
219         }
220
221         if (fetch_tags != TAGS_DEFAULT) {
222                 strbuf_reset(&buf);
223                 strbuf_addf(&buf, "remote.%s.tagopt", name);
224                 git_config_set(buf.buf,
225                                fetch_tags == TAGS_SET ? "--tags" : "--no-tags");
226         }
227
228         if (fetch && fetch_remote(name))
229                 return 1;
230
231         if (master) {
232                 strbuf_reset(&buf);
233                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
234
235                 strbuf_reset(&buf2);
236                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
237
238                 if (create_symref(buf.buf, buf2.buf, "remote add"))
239                         return error(_("Could not setup master '%s'"), master);
240         }
241
242         strbuf_release(&buf);
243         strbuf_release(&buf2);
244         string_list_clear(&track, 0);
245
246         return 0;
247 }
248
249 struct branch_info {
250         char *remote_name;
251         struct string_list merge;
252         enum rebase_type rebase;
253         char *push_remote_name;
254 };
255
256 static struct string_list branch_list = STRING_LIST_INIT_NODUP;
257
258 static const char *abbrev_ref(const char *name, const char *prefix)
259 {
260         skip_prefix(name, prefix, &name);
261         return name;
262 }
263 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
264
265 static int config_read_branches(const char *key, const char *value, void *cb)
266 {
267         const char *orig_key = key;
268         char *name;
269         struct string_list_item *item;
270         struct branch_info *info;
271         enum { REMOTE, MERGE, REBASE, PUSH_REMOTE } type;
272         size_t key_len;
273
274         if (!starts_with(key, "branch."))
275                 return 0;
276
277         key += strlen("branch.");
278         if (strip_suffix(key, ".remote", &key_len))
279                 type = REMOTE;
280         else if (strip_suffix(key, ".merge", &key_len))
281                 type = MERGE;
282         else if (strip_suffix(key, ".rebase", &key_len))
283                 type = REBASE;
284         else if (strip_suffix(key, ".pushremote", &key_len))
285                 type = PUSH_REMOTE;
286         else
287                 return 0;
288         name = xmemdupz(key, key_len);
289
290         item = string_list_insert(&branch_list, name);
291
292         if (!item->util)
293                 item->util = xcalloc(1, sizeof(struct branch_info));
294         info = item->util;
295         switch (type) {
296         case REMOTE:
297                 if (info->remote_name)
298                         warning(_("more than one %s"), orig_key);
299                 info->remote_name = xstrdup(value);
300                 break;
301         case MERGE: {
302                 char *space = strchr(value, ' ');
303                 value = abbrev_branch(value);
304                 while (space) {
305                         char *merge;
306                         merge = xstrndup(value, space - value);
307                         string_list_append(&info->merge, merge);
308                         value = abbrev_branch(space + 1);
309                         space = strchr(value, ' ');
310                 }
311                 string_list_append(&info->merge, xstrdup(value));
312                 break;
313         }
314         case REBASE:
315                 /*
316                  * Consider invalid values as false and check the
317                  * truth value with >= REBASE_TRUE.
318                  */
319                 info->rebase = rebase_parse_value(value);
320                 break;
321         case PUSH_REMOTE:
322                 if (info->push_remote_name)
323                         warning(_("more than one %s"), orig_key);
324                 info->push_remote_name = xstrdup(value);
325                 break;
326         default:
327                 BUG("unexpected type=%d", type);
328         }
329
330         return 0;
331 }
332
333 static void read_branches(void)
334 {
335         if (branch_list.nr)
336                 return;
337         git_config(config_read_branches, NULL);
338 }
339
340 struct ref_states {
341         struct remote *remote;
342         struct string_list new_refs, stale, tracked, heads, push;
343         int queried;
344 };
345
346 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
347 {
348         struct ref *fetch_map = NULL, **tail = &fetch_map;
349         struct ref *ref, *stale_refs;
350         int i;
351
352         for (i = 0; i < states->remote->fetch.nr; i++)
353                 if (get_fetch_map(remote_refs, &states->remote->fetch.items[i], &tail, 1))
354                         die(_("Could not get fetch map for refspec %s"),
355                                 states->remote->fetch.raw[i]);
356
357         states->new_refs.strdup_strings = 1;
358         states->tracked.strdup_strings = 1;
359         states->stale.strdup_strings = 1;
360         for (ref = fetch_map; ref; ref = ref->next) {
361                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
362                         string_list_append(&states->new_refs, abbrev_branch(ref->name));
363                 else
364                         string_list_append(&states->tracked, abbrev_branch(ref->name));
365         }
366         stale_refs = get_stale_heads(&states->remote->fetch, fetch_map);
367         for (ref = stale_refs; ref; ref = ref->next) {
368                 struct string_list_item *item =
369                         string_list_append(&states->stale, abbrev_branch(ref->name));
370                 item->util = xstrdup(ref->name);
371         }
372         free_refs(stale_refs);
373         free_refs(fetch_map);
374
375         string_list_sort(&states->new_refs);
376         string_list_sort(&states->tracked);
377         string_list_sort(&states->stale);
378
379         return 0;
380 }
381
382 struct push_info {
383         char *dest;
384         int forced;
385         enum {
386                 PUSH_STATUS_CREATE = 0,
387                 PUSH_STATUS_DELETE,
388                 PUSH_STATUS_UPTODATE,
389                 PUSH_STATUS_FASTFORWARD,
390                 PUSH_STATUS_OUTOFDATE,
391                 PUSH_STATUS_NOTQUERIED
392         } status;
393 };
394
395 static int get_push_ref_states(const struct ref *remote_refs,
396         struct ref_states *states)
397 {
398         struct remote *remote = states->remote;
399         struct ref *ref, *local_refs, *push_map;
400         if (remote->mirror)
401                 return 0;
402
403         local_refs = get_local_heads();
404         push_map = copy_ref_list(remote_refs);
405
406         match_push_refs(local_refs, &push_map, &remote->push, MATCH_REFS_NONE);
407
408         states->push.strdup_strings = 1;
409         for (ref = push_map; ref; ref = ref->next) {
410                 struct string_list_item *item;
411                 struct push_info *info;
412
413                 if (!ref->peer_ref)
414                         continue;
415                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
416
417                 item = string_list_append(&states->push,
418                                           abbrev_branch(ref->peer_ref->name));
419                 item->util = xcalloc(1, sizeof(struct push_info));
420                 info = item->util;
421                 info->forced = ref->force;
422                 info->dest = xstrdup(abbrev_branch(ref->name));
423
424                 if (is_null_oid(&ref->new_oid)) {
425                         info->status = PUSH_STATUS_DELETE;
426                 } else if (oideq(&ref->old_oid, &ref->new_oid))
427                         info->status = PUSH_STATUS_UPTODATE;
428                 else if (is_null_oid(&ref->old_oid))
429                         info->status = PUSH_STATUS_CREATE;
430                 else if (has_object_file(&ref->old_oid) &&
431                          ref_newer(&ref->new_oid, &ref->old_oid))
432                         info->status = PUSH_STATUS_FASTFORWARD;
433                 else
434                         info->status = PUSH_STATUS_OUTOFDATE;
435         }
436         free_refs(local_refs);
437         free_refs(push_map);
438         return 0;
439 }
440
441 static int get_push_ref_states_noquery(struct ref_states *states)
442 {
443         int i;
444         struct remote *remote = states->remote;
445         struct string_list_item *item;
446         struct push_info *info;
447
448         if (remote->mirror)
449                 return 0;
450
451         states->push.strdup_strings = 1;
452         if (!remote->push.nr) {
453                 item = string_list_append(&states->push, _("(matching)"));
454                 info = item->util = xcalloc(1, sizeof(struct push_info));
455                 info->status = PUSH_STATUS_NOTQUERIED;
456                 info->dest = xstrdup(item->string);
457         }
458         for (i = 0; i < remote->push.nr; i++) {
459                 const struct refspec_item *spec = &remote->push.items[i];
460                 if (spec->matching)
461                         item = string_list_append(&states->push, _("(matching)"));
462                 else if (strlen(spec->src))
463                         item = string_list_append(&states->push, spec->src);
464                 else
465                         item = string_list_append(&states->push, _("(delete)"));
466
467                 info = item->util = xcalloc(1, sizeof(struct push_info));
468                 info->forced = spec->force;
469                 info->status = PUSH_STATUS_NOTQUERIED;
470                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
471         }
472         return 0;
473 }
474
475 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
476 {
477         struct ref *ref, *matches;
478         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
479         struct refspec_item refspec;
480
481         refspec.force = 0;
482         refspec.pattern = 1;
483         refspec.src = refspec.dst = "refs/heads/*";
484         states->heads.strdup_strings = 1;
485         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
486         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
487                                     fetch_map, 1);
488         for (ref = matches; ref; ref = ref->next)
489                 string_list_append(&states->heads, abbrev_branch(ref->name));
490
491         free_refs(fetch_map);
492         free_refs(matches);
493
494         return 0;
495 }
496
497 struct known_remote {
498         struct known_remote *next;
499         struct remote *remote;
500 };
501
502 struct known_remotes {
503         struct remote *to_delete;
504         struct known_remote *list;
505 };
506
507 static int add_known_remote(struct remote *remote, void *cb_data)
508 {
509         struct known_remotes *all = cb_data;
510         struct known_remote *r;
511
512         if (!strcmp(all->to_delete->name, remote->name))
513                 return 0;
514
515         r = xmalloc(sizeof(*r));
516         r->remote = remote;
517         r->next = all->list;
518         all->list = r;
519         return 0;
520 }
521
522 struct branches_for_remote {
523         struct remote *remote;
524         struct string_list *branches, *skipped;
525         struct known_remotes *keep;
526 };
527
528 static int add_branch_for_removal(const char *refname,
529         const struct object_id *oid, int flags, void *cb_data)
530 {
531         struct branches_for_remote *branches = cb_data;
532         struct refspec_item refspec;
533         struct known_remote *kr;
534
535         memset(&refspec, 0, sizeof(refspec));
536         refspec.dst = (char *)refname;
537         if (remote_find_tracking(branches->remote, &refspec))
538                 return 0;
539
540         /* don't delete a branch if another remote also uses it */
541         for (kr = branches->keep->list; kr; kr = kr->next) {
542                 memset(&refspec, 0, sizeof(refspec));
543                 refspec.dst = (char *)refname;
544                 if (!remote_find_tracking(kr->remote, &refspec))
545                         return 0;
546         }
547
548         /* don't delete non-remote-tracking refs */
549         if (!starts_with(refname, "refs/remotes/")) {
550                 /* advise user how to delete local branches */
551                 if (starts_with(refname, "refs/heads/"))
552                         string_list_append(branches->skipped,
553                                            abbrev_branch(refname));
554                 /* silently skip over other non-remote refs */
555                 return 0;
556         }
557
558         string_list_append(branches->branches, refname);
559
560         return 0;
561 }
562
563 struct rename_info {
564         const char *old_name;
565         const char *new_name;
566         struct string_list *remote_branches;
567 };
568
569 static int read_remote_branches(const char *refname,
570         const struct object_id *oid, int flags, void *cb_data)
571 {
572         struct rename_info *rename = cb_data;
573         struct strbuf buf = STRBUF_INIT;
574         struct string_list_item *item;
575         int flag;
576         const char *symref;
577
578         strbuf_addf(&buf, "refs/remotes/%s/", rename->old_name);
579         if (starts_with(refname, buf.buf)) {
580                 item = string_list_append(rename->remote_branches, refname);
581                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
582                                             NULL, &flag);
583                 if (symref && (flag & REF_ISSYMREF))
584                         item->util = xstrdup(symref);
585                 else
586                         item->util = NULL;
587         }
588         strbuf_release(&buf);
589
590         return 0;
591 }
592
593 static int migrate_file(struct remote *remote)
594 {
595         struct strbuf buf = STRBUF_INIT;
596         int i;
597
598         strbuf_addf(&buf, "remote.%s.url", remote->name);
599         for (i = 0; i < remote->url_nr; i++)
600                 git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
601         strbuf_reset(&buf);
602         strbuf_addf(&buf, "remote.%s.push", remote->name);
603         for (i = 0; i < remote->push.raw_nr; i++)
604                 git_config_set_multivar(buf.buf, remote->push.raw[i], "^$", 0);
605         strbuf_reset(&buf);
606         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
607         for (i = 0; i < remote->fetch.raw_nr; i++)
608                 git_config_set_multivar(buf.buf, remote->fetch.raw[i], "^$", 0);
609         if (remote->origin == REMOTE_REMOTES)
610                 unlink_or_warn(git_path("remotes/%s", remote->name));
611         else if (remote->origin == REMOTE_BRANCHES)
612                 unlink_or_warn(git_path("branches/%s", remote->name));
613         strbuf_release(&buf);
614
615         return 0;
616 }
617
618 struct push_default_info
619 {
620         const char *old_name;
621         enum config_scope scope;
622         struct strbuf origin;
623         int linenr;
624 };
625
626 static int config_read_push_default(const char *key, const char *value,
627         void *cb)
628 {
629         struct push_default_info* info = cb;
630         if (strcmp(key, "remote.pushdefault") ||
631             !value || strcmp(value, info->old_name))
632                 return 0;
633
634         info->scope = current_config_scope();
635         strbuf_reset(&info->origin);
636         strbuf_addstr(&info->origin, current_config_name());
637         info->linenr = current_config_line();
638
639         return 0;
640 }
641
642 static void handle_push_default(const char* old_name, const char* new_name)
643 {
644         struct push_default_info push_default = {
645                 old_name, CONFIG_SCOPE_UNKNOWN, STRBUF_INIT, -1 };
646         git_config(config_read_push_default, &push_default);
647         if (push_default.scope >= CONFIG_SCOPE_COMMAND)
648                 ; /* pass */
649         else if (push_default.scope >= CONFIG_SCOPE_LOCAL) {
650                 int result = git_config_set_gently("remote.pushDefault",
651                                                    new_name);
652                 if (new_name && result && result != CONFIG_NOTHING_SET)
653                         die(_("could not set '%s'"), "remote.pushDefault");
654                 else if (!new_name && result && result != CONFIG_NOTHING_SET)
655                         die(_("could not unset '%s'"), "remote.pushDefault");
656         } else if (push_default.scope >= CONFIG_SCOPE_SYSTEM) {
657                 /* warn */
658                 warning(_("The %s configuration remote.pushDefault in:\n"
659                           "\t%s:%d\n"
660                           "now names the non-existent remote '%s'"),
661                         config_scope_name(push_default.scope),
662                         push_default.origin.buf, push_default.linenr,
663                         old_name);
664         }
665 }
666
667
668 static int mv(int argc, const char **argv)
669 {
670         struct option options[] = {
671                 OPT_END()
672         };
673         struct remote *oldremote, *newremote;
674         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
675                 old_remote_context = STRBUF_INIT;
676         struct string_list remote_branches = STRING_LIST_INIT_DUP;
677         struct rename_info rename;
678         int i, refspec_updated = 0;
679
680         if (argc != 3)
681                 usage_with_options(builtin_remote_rename_usage, options);
682
683         rename.old_name = argv[1];
684         rename.new_name = argv[2];
685         rename.remote_branches = &remote_branches;
686
687         oldremote = remote_get(rename.old_name);
688         if (!remote_is_configured(oldremote, 1))
689                 die(_("No such remote: '%s'"), rename.old_name);
690
691         if (!strcmp(rename.old_name, rename.new_name) && oldremote->origin != REMOTE_CONFIG)
692                 return migrate_file(oldremote);
693
694         newremote = remote_get(rename.new_name);
695         if (remote_is_configured(newremote, 1))
696                 die(_("remote %s already exists."), rename.new_name);
697
698         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new_name);
699         if (!valid_fetch_refspec(buf.buf))
700                 die(_("'%s' is not a valid remote name"), rename.new_name);
701
702         strbuf_reset(&buf);
703         strbuf_addf(&buf, "remote.%s", rename.old_name);
704         strbuf_addf(&buf2, "remote.%s", rename.new_name);
705         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
706                 return error(_("Could not rename config section '%s' to '%s'"),
707                                 buf.buf, buf2.buf);
708
709         strbuf_reset(&buf);
710         strbuf_addf(&buf, "remote.%s.fetch", rename.new_name);
711         git_config_set_multivar(buf.buf, NULL, NULL, 1);
712         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old_name);
713         for (i = 0; i < oldremote->fetch.raw_nr; i++) {
714                 char *ptr;
715
716                 strbuf_reset(&buf2);
717                 strbuf_addstr(&buf2, oldremote->fetch.raw[i]);
718                 ptr = strstr(buf2.buf, old_remote_context.buf);
719                 if (ptr) {
720                         refspec_updated = 1;
721                         strbuf_splice(&buf2,
722                                       ptr-buf2.buf + strlen(":refs/remotes/"),
723                                       strlen(rename.old_name), rename.new_name,
724                                       strlen(rename.new_name));
725                 } else
726                         warning(_("Not updating non-default fetch refspec\n"
727                                   "\t%s\n"
728                                   "\tPlease update the configuration manually if necessary."),
729                                 buf2.buf);
730
731                 git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
732         }
733
734         read_branches();
735         for (i = 0; i < branch_list.nr; i++) {
736                 struct string_list_item *item = branch_list.items + i;
737                 struct branch_info *info = item->util;
738                 if (info->remote_name && !strcmp(info->remote_name, rename.old_name)) {
739                         strbuf_reset(&buf);
740                         strbuf_addf(&buf, "branch.%s.remote", item->string);
741                         git_config_set(buf.buf, rename.new_name);
742                 }
743                 if (info->push_remote_name && !strcmp(info->push_remote_name, rename.old_name)) {
744                         strbuf_reset(&buf);
745                         strbuf_addf(&buf, "branch.%s.pushremote", item->string);
746                         git_config_set(buf.buf, rename.new_name);
747                 }
748         }
749
750         if (!refspec_updated)
751                 return 0;
752
753         /*
754          * First remove symrefs, then rename the rest, finally create
755          * the new symrefs.
756          */
757         for_each_ref(read_remote_branches, &rename);
758         for (i = 0; i < remote_branches.nr; i++) {
759                 struct string_list_item *item = remote_branches.items + i;
760                 int flag = 0;
761
762                 read_ref_full(item->string, RESOLVE_REF_READING, NULL, &flag);
763                 if (!(flag & REF_ISSYMREF))
764                         continue;
765                 if (delete_ref(NULL, item->string, NULL, REF_NO_DEREF))
766                         die(_("deleting '%s' failed"), item->string);
767         }
768         for (i = 0; i < remote_branches.nr; i++) {
769                 struct string_list_item *item = remote_branches.items + i;
770
771                 if (item->util)
772                         continue;
773                 strbuf_reset(&buf);
774                 strbuf_addstr(&buf, item->string);
775                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
776                                 rename.new_name, strlen(rename.new_name));
777                 strbuf_reset(&buf2);
778                 strbuf_addf(&buf2, "remote: renamed %s to %s",
779                                 item->string, buf.buf);
780                 if (rename_ref(item->string, buf.buf, buf2.buf))
781                         die(_("renaming '%s' failed"), item->string);
782         }
783         for (i = 0; i < remote_branches.nr; i++) {
784                 struct string_list_item *item = remote_branches.items + i;
785
786                 if (!item->util)
787                         continue;
788                 strbuf_reset(&buf);
789                 strbuf_addstr(&buf, item->string);
790                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
791                                 rename.new_name, strlen(rename.new_name));
792                 strbuf_reset(&buf2);
793                 strbuf_addstr(&buf2, item->util);
794                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old_name),
795                                 rename.new_name, strlen(rename.new_name));
796                 strbuf_reset(&buf3);
797                 strbuf_addf(&buf3, "remote: renamed %s to %s",
798                                 item->string, buf.buf);
799                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
800                         die(_("creating '%s' failed"), buf.buf);
801         }
802         string_list_clear(&remote_branches, 1);
803
804         handle_push_default(rename.old_name, rename.new_name);
805
806         return 0;
807 }
808
809 static int rm(int argc, const char **argv)
810 {
811         struct option options[] = {
812                 OPT_END()
813         };
814         struct remote *remote;
815         struct strbuf buf = STRBUF_INIT;
816         struct known_remotes known_remotes = { NULL, NULL };
817         struct string_list branches = STRING_LIST_INIT_DUP;
818         struct string_list skipped = STRING_LIST_INIT_DUP;
819         struct branches_for_remote cb_data;
820         int i, result;
821
822         memset(&cb_data, 0, sizeof(cb_data));
823         cb_data.branches = &branches;
824         cb_data.skipped = &skipped;
825         cb_data.keep = &known_remotes;
826
827         if (argc != 2)
828                 usage_with_options(builtin_remote_rm_usage, options);
829
830         remote = remote_get(argv[1]);
831         if (!remote_is_configured(remote, 1))
832                 die(_("No such remote: '%s'"), argv[1]);
833
834         known_remotes.to_delete = remote;
835         for_each_remote(add_known_remote, &known_remotes);
836
837         read_branches();
838         for (i = 0; i < branch_list.nr; i++) {
839                 struct string_list_item *item = branch_list.items + i;
840                 struct branch_info *info = item->util;
841                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
842                         const char *keys[] = { "remote", "merge", NULL }, **k;
843                         for (k = keys; *k; k++) {
844                                 strbuf_reset(&buf);
845                                 strbuf_addf(&buf, "branch.%s.%s",
846                                                 item->string, *k);
847                                 result = git_config_set_gently(buf.buf, NULL);
848                                 if (result && result != CONFIG_NOTHING_SET)
849                                         die(_("could not unset '%s'"), buf.buf);
850                         }
851                 }
852                 if (info->push_remote_name && !strcmp(info->push_remote_name, remote->name)) {
853                         strbuf_reset(&buf);
854                         strbuf_addf(&buf, "branch.%s.pushremote", item->string);
855                         result = git_config_set_gently(buf.buf, NULL);
856                         if (result && result != CONFIG_NOTHING_SET)
857                                 die(_("could not unset '%s'"), buf.buf);
858                 }
859         }
860
861         /*
862          * We cannot just pass a function to for_each_ref() which deletes
863          * the branches one by one, since for_each_ref() relies on cached
864          * refs, which are invalidated when deleting a branch.
865          */
866         cb_data.remote = remote;
867         result = for_each_ref(add_branch_for_removal, &cb_data);
868         strbuf_release(&buf);
869
870         if (!result)
871                 result = delete_refs("remote: remove", &branches, REF_NO_DEREF);
872         string_list_clear(&branches, 0);
873
874         if (skipped.nr) {
875                 fprintf_ln(stderr,
876                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
877                               "to delete it, use:",
878                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
879                               "to delete them, use:",
880                               skipped.nr));
881                 for (i = 0; i < skipped.nr; i++)
882                         fprintf(stderr, "  git branch -d %s\n",
883                                 skipped.items[i].string);
884         }
885         string_list_clear(&skipped, 0);
886
887         if (!result) {
888                 strbuf_addf(&buf, "remote.%s", remote->name);
889                 if (git_config_rename_section(buf.buf, NULL) < 1)
890                         return error(_("Could not remove config section '%s'"), buf.buf);
891
892                 handle_push_default(remote->name, NULL);
893         }
894
895         return result;
896 }
897
898 static void clear_push_info(void *util, const char *string)
899 {
900         struct push_info *info = util;
901         free(info->dest);
902         free(info);
903 }
904
905 static void free_remote_ref_states(struct ref_states *states)
906 {
907         string_list_clear(&states->new_refs, 0);
908         string_list_clear(&states->stale, 1);
909         string_list_clear(&states->tracked, 0);
910         string_list_clear(&states->heads, 0);
911         string_list_clear_func(&states->push, clear_push_info);
912 }
913
914 static int append_ref_to_tracked_list(const char *refname,
915         const struct object_id *oid, int flags, void *cb_data)
916 {
917         struct ref_states *states = cb_data;
918         struct refspec_item refspec;
919
920         if (flags & REF_ISSYMREF)
921                 return 0;
922
923         memset(&refspec, 0, sizeof(refspec));
924         refspec.dst = (char *)refname;
925         if (!remote_find_tracking(states->remote, &refspec))
926                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
927
928         return 0;
929 }
930
931 static int get_remote_ref_states(const char *name,
932                                  struct ref_states *states,
933                                  int query)
934 {
935         struct transport *transport;
936         const struct ref *remote_refs;
937
938         states->remote = remote_get(name);
939         if (!states->remote)
940                 return error(_("No such remote: '%s'"), name);
941
942         read_branches();
943
944         if (query) {
945                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
946                         states->remote->url[0] : NULL);
947                 remote_refs = transport_get_remote_refs(transport, NULL);
948                 transport_disconnect(transport);
949
950                 states->queried = 1;
951                 if (query & GET_REF_STATES)
952                         get_ref_states(remote_refs, states);
953                 if (query & GET_HEAD_NAMES)
954                         get_head_names(remote_refs, states);
955                 if (query & GET_PUSH_REF_STATES)
956                         get_push_ref_states(remote_refs, states);
957         } else {
958                 for_each_ref(append_ref_to_tracked_list, states);
959                 string_list_sort(&states->tracked);
960                 get_push_ref_states_noquery(states);
961         }
962
963         return 0;
964 }
965
966 struct show_info {
967         struct string_list *list;
968         struct ref_states *states;
969         int width, width2;
970         int any_rebase;
971 };
972
973 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
974 {
975         struct show_info *info = cb_data;
976         int n = strlen(item->string);
977         if (n > info->width)
978                 info->width = n;
979         string_list_insert(info->list, item->string);
980         return 0;
981 }
982
983 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
984 {
985         struct show_info *info = cb_data;
986         struct ref_states *states = info->states;
987         const char *name = item->string;
988
989         if (states->queried) {
990                 const char *fmt = "%s";
991                 const char *arg = "";
992                 if (string_list_has_string(&states->new_refs, name)) {
993                         fmt = _(" new (next fetch will store in remotes/%s)");
994                         arg = states->remote->name;
995                 } else if (string_list_has_string(&states->tracked, name))
996                         arg = _(" tracked");
997                 else if (string_list_has_string(&states->stale, name))
998                         arg = _(" stale (use 'git remote prune' to remove)");
999                 else
1000                         arg = _(" ???");
1001                 printf("    %-*s", info->width, name);
1002                 printf(fmt, arg);
1003                 printf("\n");
1004         } else
1005                 printf("    %s\n", name);
1006
1007         return 0;
1008 }
1009
1010 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
1011 {
1012         struct show_info *show_info = cb_data;
1013         struct ref_states *states = show_info->states;
1014         struct branch_info *branch_info = branch_item->util;
1015         struct string_list_item *item;
1016         int n;
1017
1018         if (!branch_info->merge.nr || !branch_info->remote_name ||
1019             strcmp(states->remote->name, branch_info->remote_name))
1020                 return 0;
1021         if ((n = strlen(branch_item->string)) > show_info->width)
1022                 show_info->width = n;
1023         if (branch_info->rebase >= REBASE_TRUE)
1024                 show_info->any_rebase = 1;
1025
1026         item = string_list_insert(show_info->list, branch_item->string);
1027         item->util = branch_info;
1028
1029         return 0;
1030 }
1031
1032 static int show_local_info_item(struct string_list_item *item, void *cb_data)
1033 {
1034         struct show_info *show_info = cb_data;
1035         struct branch_info *branch_info = item->util;
1036         struct string_list *merge = &branch_info->merge;
1037         int width = show_info->width + 4;
1038         int i;
1039
1040         if (branch_info->rebase >= REBASE_TRUE && branch_info->merge.nr > 1) {
1041                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
1042                         item->string);
1043                 return 0;
1044         }
1045
1046         printf("    %-*s ", show_info->width, item->string);
1047         if (branch_info->rebase >= REBASE_TRUE) {
1048                 const char *msg;
1049                 if (branch_info->rebase == REBASE_INTERACTIVE)
1050                         msg = _("rebases interactively onto remote %s");
1051                 else if (branch_info->rebase == REBASE_MERGES)
1052                         msg = _("rebases interactively (with merges) onto "
1053                                 "remote %s");
1054                 else
1055                         msg = _("rebases onto remote %s");
1056                 printf_ln(msg, merge->items[0].string);
1057                 return 0;
1058         } else if (show_info->any_rebase) {
1059                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1060                 width++;
1061         } else {
1062                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1063         }
1064         for (i = 1; i < merge->nr; i++)
1065                 printf(_("%-*s    and with remote %s\n"), width, "",
1066                        merge->items[i].string);
1067
1068         return 0;
1069 }
1070
1071 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1072 {
1073         struct show_info *show_info = cb_data;
1074         struct push_info *push_info = push_item->util;
1075         struct string_list_item *item;
1076         int n;
1077         if ((n = strlen(push_item->string)) > show_info->width)
1078                 show_info->width = n;
1079         if ((n = strlen(push_info->dest)) > show_info->width2)
1080                 show_info->width2 = n;
1081         item = string_list_append(show_info->list, push_item->string);
1082         item->util = push_item->util;
1083         return 0;
1084 }
1085
1086 /*
1087  * Sorting comparison for a string list that has push_info
1088  * structs in its util field
1089  */
1090 static int cmp_string_with_push(const void *va, const void *vb)
1091 {
1092         const struct string_list_item *a = va;
1093         const struct string_list_item *b = vb;
1094         const struct push_info *a_push = a->util;
1095         const struct push_info *b_push = b->util;
1096         int cmp = strcmp(a->string, b->string);
1097         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1098 }
1099
1100 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1101 {
1102         struct show_info *show_info = cb_data;
1103         struct push_info *push_info = item->util;
1104         const char *src = item->string, *status = NULL;
1105
1106         switch (push_info->status) {
1107         case PUSH_STATUS_CREATE:
1108                 status = _("create");
1109                 break;
1110         case PUSH_STATUS_DELETE:
1111                 status = _("delete");
1112                 src = _("(none)");
1113                 break;
1114         case PUSH_STATUS_UPTODATE:
1115                 status = _("up to date");
1116                 break;
1117         case PUSH_STATUS_FASTFORWARD:
1118                 status = _("fast-forwardable");
1119                 break;
1120         case PUSH_STATUS_OUTOFDATE:
1121                 status = _("local out of date");
1122                 break;
1123         case PUSH_STATUS_NOTQUERIED:
1124                 break;
1125         }
1126         if (status) {
1127                 if (push_info->forced)
1128                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1129                                show_info->width2, push_info->dest, status);
1130                 else
1131                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1132                                show_info->width2, push_info->dest, status);
1133         } else {
1134                 if (push_info->forced)
1135                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1136                                push_info->dest);
1137                 else
1138                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1139                                push_info->dest);
1140         }
1141         return 0;
1142 }
1143
1144 static int get_one_entry(struct remote *remote, void *priv)
1145 {
1146         struct string_list *list = priv;
1147         struct strbuf url_buf = STRBUF_INIT;
1148         const char **url;
1149         int i, url_nr;
1150
1151         if (remote->url_nr > 0) {
1152                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1153                 string_list_append(list, remote->name)->util =
1154                                 strbuf_detach(&url_buf, NULL);
1155         } else
1156                 string_list_append(list, remote->name)->util = NULL;
1157         if (remote->pushurl_nr) {
1158                 url = remote->pushurl;
1159                 url_nr = remote->pushurl_nr;
1160         } else {
1161                 url = remote->url;
1162                 url_nr = remote->url_nr;
1163         }
1164         for (i = 0; i < url_nr; i++)
1165         {
1166                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1167                 string_list_append(list, remote->name)->util =
1168                                 strbuf_detach(&url_buf, NULL);
1169         }
1170
1171         return 0;
1172 }
1173
1174 static int show_all(void)
1175 {
1176         struct string_list list = STRING_LIST_INIT_NODUP;
1177         int result;
1178
1179         list.strdup_strings = 1;
1180         result = for_each_remote(get_one_entry, &list);
1181
1182         if (!result) {
1183                 int i;
1184
1185                 string_list_sort(&list);
1186                 for (i = 0; i < list.nr; i++) {
1187                         struct string_list_item *item = list.items + i;
1188                         if (verbose)
1189                                 printf("%s\t%s\n", item->string,
1190                                         item->util ? (const char *)item->util : "");
1191                         else {
1192                                 if (i && !strcmp((item - 1)->string, item->string))
1193                                         continue;
1194                                 printf("%s\n", item->string);
1195                         }
1196                 }
1197         }
1198         string_list_clear(&list, 1);
1199         return result;
1200 }
1201
1202 static int show(int argc, const char **argv)
1203 {
1204         int no_query = 0, result = 0, query_flag = 0;
1205         struct option options[] = {
1206                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1207                 OPT_END()
1208         };
1209         struct ref_states states;
1210         struct string_list info_list = STRING_LIST_INIT_NODUP;
1211         struct show_info info;
1212
1213         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1214                              0);
1215
1216         if (argc < 1)
1217                 return show_all();
1218
1219         if (!no_query)
1220                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1221
1222         memset(&states, 0, sizeof(states));
1223         memset(&info, 0, sizeof(info));
1224         info.states = &states;
1225         info.list = &info_list;
1226         for (; argc; argc--, argv++) {
1227                 int i;
1228                 const char **url;
1229                 int url_nr;
1230
1231                 get_remote_ref_states(*argv, &states, query_flag);
1232
1233                 printf_ln(_("* remote %s"), *argv);
1234                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1235                        states.remote->url[0] : _("(no URL)"));
1236                 if (states.remote->pushurl_nr) {
1237                         url = states.remote->pushurl;
1238                         url_nr = states.remote->pushurl_nr;
1239                 } else {
1240                         url = states.remote->url;
1241                         url_nr = states.remote->url_nr;
1242                 }
1243                 for (i = 0; i < url_nr; i++)
1244                         /*
1245                          * TRANSLATORS: the colon ':' should align
1246                          * with the one in " Fetch URL: %s"
1247                          * translation.
1248                          */
1249                         printf_ln(_("  Push  URL: %s"), url[i]);
1250                 if (!i)
1251                         printf_ln(_("  Push  URL: %s"), _("(no URL)"));
1252                 if (no_query)
1253                         printf_ln(_("  HEAD branch: %s"), _("(not queried)"));
1254                 else if (!states.heads.nr)
1255                         printf_ln(_("  HEAD branch: %s"), _("(unknown)"));
1256                 else if (states.heads.nr == 1)
1257                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1258                 else {
1259                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1260                                  " may be one of the following):\n"));
1261                         for (i = 0; i < states.heads.nr; i++)
1262                                 printf("    %s\n", states.heads.items[i].string);
1263                 }
1264
1265                 /* remote branch info */
1266                 info.width = 0;
1267                 for_each_string_list(&states.new_refs, add_remote_to_show_info, &info);
1268                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1269                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1270                 if (info.list->nr)
1271                         printf_ln(Q_("  Remote branch:%s",
1272                                      "  Remote branches:%s",
1273                                      info.list->nr),
1274                                   no_query ? _(" (status not queried)") : "");
1275                 for_each_string_list(info.list, show_remote_info_item, &info);
1276                 string_list_clear(info.list, 0);
1277
1278                 /* git pull info */
1279                 info.width = 0;
1280                 info.any_rebase = 0;
1281                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1282                 if (info.list->nr)
1283                         printf_ln(Q_("  Local branch configured for 'git pull':",
1284                                      "  Local branches configured for 'git pull':",
1285                                      info.list->nr));
1286                 for_each_string_list(info.list, show_local_info_item, &info);
1287                 string_list_clear(info.list, 0);
1288
1289                 /* git push info */
1290                 if (states.remote->mirror)
1291                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1292
1293                 info.width = info.width2 = 0;
1294                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1295                 QSORT(info.list->items, info.list->nr, cmp_string_with_push);
1296                 if (info.list->nr)
1297                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1298                                      "  Local refs configured for 'git push'%s:",
1299                                      info.list->nr),
1300                                   no_query ? _(" (status not queried)") : "");
1301                 for_each_string_list(info.list, show_push_info_item, &info);
1302                 string_list_clear(info.list, 0);
1303
1304                 free_remote_ref_states(&states);
1305         }
1306
1307         return result;
1308 }
1309
1310 static int set_head(int argc, const char **argv)
1311 {
1312         int i, opt_a = 0, opt_d = 0, result = 0;
1313         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1314         char *head_name = NULL;
1315
1316         struct option options[] = {
1317                 OPT_BOOL('a', "auto", &opt_a,
1318                          N_("set refs/remotes/<name>/HEAD according to remote")),
1319                 OPT_BOOL('d', "delete", &opt_d,
1320                          N_("delete refs/remotes/<name>/HEAD")),
1321                 OPT_END()
1322         };
1323         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1324                              0);
1325         if (argc)
1326                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1327
1328         if (!opt_a && !opt_d && argc == 2) {
1329                 head_name = xstrdup(argv[1]);
1330         } else if (opt_a && !opt_d && argc == 1) {
1331                 struct ref_states states;
1332                 memset(&states, 0, sizeof(states));
1333                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1334                 if (!states.heads.nr)
1335                         result |= error(_("Cannot determine remote HEAD"));
1336                 else if (states.heads.nr > 1) {
1337                         result |= error(_("Multiple remote HEAD branches. "
1338                                           "Please choose one explicitly with:"));
1339                         for (i = 0; i < states.heads.nr; i++)
1340                                 fprintf(stderr, "  git remote set-head %s %s\n",
1341                                         argv[0], states.heads.items[i].string);
1342                 } else
1343                         head_name = xstrdup(states.heads.items[0].string);
1344                 free_remote_ref_states(&states);
1345         } else if (opt_d && !opt_a && argc == 1) {
1346                 if (delete_ref(NULL, buf.buf, NULL, REF_NO_DEREF))
1347                         result |= error(_("Could not delete %s"), buf.buf);
1348         } else
1349                 usage_with_options(builtin_remote_sethead_usage, options);
1350
1351         if (head_name) {
1352                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1353                 /* make sure it's valid */
1354                 if (!ref_exists(buf2.buf))
1355                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1356                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1357                         result |= error(_("Could not setup %s"), buf.buf);
1358                 if (opt_a)
1359                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1360                 free(head_name);
1361         }
1362
1363         strbuf_release(&buf);
1364         strbuf_release(&buf2);
1365         return result;
1366 }
1367
1368 static int prune_remote(const char *remote, int dry_run)
1369 {
1370         int result = 0;
1371         struct ref_states states;
1372         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1373         struct string_list_item *item;
1374         const char *dangling_msg = dry_run
1375                 ? _(" %s will become dangling!")
1376                 : _(" %s has become dangling!");
1377
1378         memset(&states, 0, sizeof(states));
1379         get_remote_ref_states(remote, &states, GET_REF_STATES);
1380
1381         if (!states.stale.nr) {
1382                 free_remote_ref_states(&states);
1383                 return 0;
1384         }
1385
1386         printf_ln(_("Pruning %s"), remote);
1387         printf_ln(_("URL: %s"),
1388                   states.remote->url_nr
1389                   ? states.remote->url[0]
1390                   : _("(no URL)"));
1391
1392         for_each_string_list_item(item, &states.stale)
1393                 string_list_append(&refs_to_prune, item->util);
1394         string_list_sort(&refs_to_prune);
1395
1396         if (!dry_run)
1397                 result |= delete_refs("remote: prune", &refs_to_prune, 0);
1398
1399         for_each_string_list_item(item, &states.stale) {
1400                 const char *refname = item->util;
1401
1402                 if (dry_run)
1403                         printf_ln(_(" * [would prune] %s"),
1404                                abbrev_ref(refname, "refs/remotes/"));
1405                 else
1406                         printf_ln(_(" * [pruned] %s"),
1407                                abbrev_ref(refname, "refs/remotes/"));
1408         }
1409
1410         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1411
1412         string_list_clear(&refs_to_prune, 0);
1413         free_remote_ref_states(&states);
1414         return result;
1415 }
1416
1417 static int prune(int argc, const char **argv)
1418 {
1419         int dry_run = 0, result = 0;
1420         struct option options[] = {
1421                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1422                 OPT_END()
1423         };
1424
1425         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1426                              0);
1427
1428         if (argc < 1)
1429                 usage_with_options(builtin_remote_prune_usage, options);
1430
1431         for (; argc; argc--, argv++)
1432                 result |= prune_remote(*argv, dry_run);
1433
1434         return result;
1435 }
1436
1437 static int get_remote_default(const char *key, const char *value, void *priv)
1438 {
1439         if (strcmp(key, "remotes.default") == 0) {
1440                 int *found = priv;
1441                 *found = 1;
1442         }
1443         return 0;
1444 }
1445
1446 static int update(int argc, const char **argv)
1447 {
1448         int i, prune = -1;
1449         struct option options[] = {
1450                 OPT_BOOL('p', "prune", &prune,
1451                          N_("prune remotes after fetching")),
1452                 OPT_END()
1453         };
1454         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1455         int default_defined = 0;
1456         int retval;
1457
1458         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1459                              PARSE_OPT_KEEP_ARGV0);
1460
1461         argv_array_push(&fetch_argv, "fetch");
1462
1463         if (prune != -1)
1464                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1465         if (verbose)
1466                 argv_array_push(&fetch_argv, "-v");
1467         argv_array_push(&fetch_argv, "--multiple");
1468         if (argc < 2)
1469                 argv_array_push(&fetch_argv, "default");
1470         for (i = 1; i < argc; i++)
1471                 argv_array_push(&fetch_argv, argv[i]);
1472
1473         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1474                 git_config(get_remote_default, &default_defined);
1475                 if (!default_defined) {
1476                         argv_array_pop(&fetch_argv);
1477                         argv_array_push(&fetch_argv, "--all");
1478                 }
1479         }
1480
1481         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1482         argv_array_clear(&fetch_argv);
1483         return retval;
1484 }
1485
1486 static int remove_all_fetch_refspecs(const char *key)
1487 {
1488         return git_config_set_multivar_gently(key, NULL, NULL, 1);
1489 }
1490
1491 static void add_branches(struct remote *remote, const char **branches,
1492                          const char *key)
1493 {
1494         const char *remotename = remote->name;
1495         int mirror = remote->mirror;
1496         struct strbuf refspec = STRBUF_INIT;
1497
1498         for (; *branches; branches++)
1499                 add_branch(key, *branches, remotename, mirror, &refspec);
1500
1501         strbuf_release(&refspec);
1502 }
1503
1504 static int set_remote_branches(const char *remotename, const char **branches,
1505                                 int add_mode)
1506 {
1507         struct strbuf key = STRBUF_INIT;
1508         struct remote *remote;
1509
1510         strbuf_addf(&key, "remote.%s.fetch", remotename);
1511
1512         remote = remote_get(remotename);
1513         if (!remote_is_configured(remote, 1))
1514                 die(_("No such remote '%s'"), remotename);
1515
1516         if (!add_mode && remove_all_fetch_refspecs(key.buf)) {
1517                 strbuf_release(&key);
1518                 return 1;
1519         }
1520         add_branches(remote, branches, key.buf);
1521
1522         strbuf_release(&key);
1523         return 0;
1524 }
1525
1526 static int set_branches(int argc, const char **argv)
1527 {
1528         int add_mode = 0;
1529         struct option options[] = {
1530                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1531                 OPT_END()
1532         };
1533
1534         argc = parse_options(argc, argv, NULL, options,
1535                              builtin_remote_setbranches_usage, 0);
1536         if (argc == 0) {
1537                 error(_("no remote specified"));
1538                 usage_with_options(builtin_remote_setbranches_usage, options);
1539         }
1540         argv[argc] = NULL;
1541
1542         return set_remote_branches(argv[0], argv + 1, add_mode);
1543 }
1544
1545 static int get_url(int argc, const char **argv)
1546 {
1547         int i, push_mode = 0, all_mode = 0;
1548         const char *remotename = NULL;
1549         struct remote *remote;
1550         const char **url;
1551         int url_nr;
1552         struct option options[] = {
1553                 OPT_BOOL('\0', "push", &push_mode,
1554                          N_("query push URLs rather than fetch URLs")),
1555                 OPT_BOOL('\0', "all", &all_mode,
1556                          N_("return all URLs")),
1557                 OPT_END()
1558         };
1559         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1560
1561         if (argc != 1)
1562                 usage_with_options(builtin_remote_geturl_usage, options);
1563
1564         remotename = argv[0];
1565
1566         remote = remote_get(remotename);
1567         if (!remote_is_configured(remote, 1))
1568                 die(_("No such remote '%s'"), remotename);
1569
1570         url_nr = 0;
1571         if (push_mode) {
1572                 url = remote->pushurl;
1573                 url_nr = remote->pushurl_nr;
1574         }
1575         /* else fetch mode */
1576
1577         /* Use the fetch URL when no push URLs were found or requested. */
1578         if (!url_nr) {
1579                 url = remote->url;
1580                 url_nr = remote->url_nr;
1581         }
1582
1583         if (!url_nr)
1584                 die(_("no URLs configured for remote '%s'"), remotename);
1585
1586         if (all_mode) {
1587                 for (i = 0; i < url_nr; i++)
1588                         printf_ln("%s", url[i]);
1589         } else {
1590                 printf_ln("%s", *url);
1591         }
1592
1593         return 0;
1594 }
1595
1596 static int set_url(int argc, const char **argv)
1597 {
1598         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1599         int matches = 0, negative_matches = 0;
1600         const char *remotename = NULL;
1601         const char *newurl = NULL;
1602         const char *oldurl = NULL;
1603         struct remote *remote;
1604         regex_t old_regex;
1605         const char **urlset;
1606         int urlset_nr;
1607         struct strbuf name_buf = STRBUF_INIT;
1608         struct option options[] = {
1609                 OPT_BOOL('\0', "push", &push_mode,
1610                          N_("manipulate push URLs")),
1611                 OPT_BOOL('\0', "add", &add_mode,
1612                          N_("add URL")),
1613                 OPT_BOOL('\0', "delete", &delete_mode,
1614                             N_("delete URLs")),
1615                 OPT_END()
1616         };
1617         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1618                              PARSE_OPT_KEEP_ARGV0);
1619
1620         if (add_mode && delete_mode)
1621                 die(_("--add --delete doesn't make sense"));
1622
1623         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1624                 usage_with_options(builtin_remote_seturl_usage, options);
1625
1626         remotename = argv[1];
1627         newurl = argv[2];
1628         if (argc > 3)
1629                 oldurl = argv[3];
1630
1631         if (delete_mode)
1632                 oldurl = newurl;
1633
1634         remote = remote_get(remotename);
1635         if (!remote_is_configured(remote, 1))
1636                 die(_("No such remote '%s'"), remotename);
1637
1638         if (push_mode) {
1639                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1640                 urlset = remote->pushurl;
1641                 urlset_nr = remote->pushurl_nr;
1642         } else {
1643                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1644                 urlset = remote->url;
1645                 urlset_nr = remote->url_nr;
1646         }
1647
1648         /* Special cases that add new entry. */
1649         if ((!oldurl && !delete_mode) || add_mode) {
1650                 if (add_mode)
1651                         git_config_set_multivar(name_buf.buf, newurl,
1652                                                        "^$", 0);
1653                 else
1654                         git_config_set(name_buf.buf, newurl);
1655                 goto out;
1656         }
1657
1658         /* Old URL specified. Demand that one matches. */
1659         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1660                 die(_("Invalid old URL pattern: %s"), oldurl);
1661
1662         for (i = 0; i < urlset_nr; i++)
1663                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1664                         matches++;
1665                 else
1666                         negative_matches++;
1667         if (!delete_mode && !matches)
1668                 die(_("No such URL found: %s"), oldurl);
1669         if (delete_mode && !negative_matches && !push_mode)
1670                 die(_("Will not delete all non-push URLs"));
1671
1672         regfree(&old_regex);
1673
1674         if (!delete_mode)
1675                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1676         else
1677                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1678 out:
1679         strbuf_release(&name_buf);
1680         return 0;
1681 }
1682
1683 int cmd_remote(int argc, const char **argv, const char *prefix)
1684 {
1685         struct option options[] = {
1686                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1687                 OPT_END()
1688         };
1689         int result;
1690
1691         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1692                 PARSE_OPT_STOP_AT_NON_OPTION);
1693
1694         if (argc < 1)
1695                 result = show_all();
1696         else if (!strcmp(argv[0], "add"))
1697                 result = add(argc, argv);
1698         else if (!strcmp(argv[0], "rename"))
1699                 result = mv(argc, argv);
1700         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1701                 result = rm(argc, argv);
1702         else if (!strcmp(argv[0], "set-head"))
1703                 result = set_head(argc, argv);
1704         else if (!strcmp(argv[0], "set-branches"))
1705                 result = set_branches(argc, argv);
1706         else if (!strcmp(argv[0], "get-url"))
1707                 result = get_url(argc, argv);
1708         else if (!strcmp(argv[0], "set-url"))
1709                 result = set_url(argc, argv);
1710         else if (!strcmp(argv[0], "show"))
1711                 result = show(argc, argv);
1712         else if (!strcmp(argv[0], "prune"))
1713                 result = prune(argc, argv);
1714         else if (!strcmp(argv[0], "update"))
1715                 result = update(argc, argv);
1716         else {
1717                 error(_("Unknown subcommand: %s"), argv[0]);
1718                 usage_with_options(builtin_remote_usage, options);
1719         }
1720
1721         return result ? 1 : 0;
1722 }