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