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