Merge branch 'jl/remote-rm-prune'
[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 set-url [--push] <name> <newurl> [<oldurl>]"),
22         N_("git remote set-url --add <name> <newurl>"),
23         N_("git remote set-url --delete <name> <url>"),
24         NULL
25 };
26
27 static const char * const builtin_remote_add_usage[] = {
28         N_("git remote add [<options>] <name> <url>"),
29         NULL
30 };
31
32 static const char * const builtin_remote_rename_usage[] = {
33         N_("git remote rename <old> <new>"),
34         NULL
35 };
36
37 static const char * const builtin_remote_rm_usage[] = {
38         N_("git remote remove <name>"),
39         NULL
40 };
41
42 static const char * const builtin_remote_sethead_usage[] = {
43         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
44         NULL
45 };
46
47 static const char * const builtin_remote_setbranches_usage[] = {
48         N_("git remote set-branches <name> <branch>..."),
49         N_("git remote set-branches --add <name> <branch>..."),
50         NULL
51 };
52
53 static const char * const builtin_remote_show_usage[] = {
54         N_("git remote show [<options>] <name>"),
55         NULL
56 };
57
58 static const char * const builtin_remote_prune_usage[] = {
59         N_("git remote prune [<options>] <name>"),
60         NULL
61 };
62
63 static const char * const builtin_remote_update_usage[] = {
64         N_("git remote update [<options>] [<group> | <remote>]..."),
65         NULL
66 };
67
68 static const char * const builtin_remote_seturl_usage[] = {
69         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
70         N_("git remote set-url --add <name> <newurl>"),
71         N_("git remote set-url --delete <name> <url>"),
72         NULL
73 };
74
75 #define GET_REF_STATES (1<<0)
76 #define GET_HEAD_NAMES (1<<1)
77 #define GET_PUSH_REF_STATES (1<<2)
78
79 static int verbose;
80
81 static int fetch_remote(const char *name)
82 {
83         const char *argv[] = { "fetch", name, NULL, NULL };
84         if (verbose) {
85                 argv[1] = "-v";
86                 argv[2] = name;
87         }
88         printf_ln(_("Updating %s"), name);
89         if (run_command_v_opt(argv, RUN_GIT_CMD))
90                 return error(_("Could not fetch %s"), name);
91         return 0;
92 }
93
94 enum {
95         TAGS_UNSET = 0,
96         TAGS_DEFAULT = 1,
97         TAGS_SET = 2
98 };
99
100 #define MIRROR_NONE 0
101 #define MIRROR_FETCH 1
102 #define MIRROR_PUSH 2
103 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
104
105 static int add_branch(const char *key, const char *branchname,
106                 const char *remotename, int mirror, struct strbuf *tmp)
107 {
108         strbuf_reset(tmp);
109         strbuf_addch(tmp, '+');
110         if (mirror)
111                 strbuf_addf(tmp, "refs/%s:refs/%s",
112                                 branchname, branchname);
113         else
114                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
115                                 branchname, remotename, branchname);
116         return git_config_set_multivar(key, tmp->buf, "^$", 0);
117 }
118
119 static const char mirror_advice[] =
120 N_("--mirror is dangerous and deprecated; please\n"
121    "\t use --mirror=fetch or --mirror=push instead");
122
123 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
124 {
125         unsigned *mirror = opt->value;
126         if (not)
127                 *mirror = MIRROR_NONE;
128         else if (!arg) {
129                 warning("%s", _(mirror_advice));
130                 *mirror = MIRROR_BOTH;
131         }
132         else if (!strcmp(arg, "fetch"))
133                 *mirror = MIRROR_FETCH;
134         else if (!strcmp(arg, "push"))
135                 *mirror = MIRROR_PUSH;
136         else
137                 return error(_("unknown mirror argument: %s"), arg);
138         return 0;
139 }
140
141 static int add(int argc, const char **argv)
142 {
143         int fetch = 0, fetch_tags = TAGS_DEFAULT;
144         unsigned mirror = MIRROR_NONE;
145         struct string_list track = STRING_LIST_INIT_NODUP;
146         const char *master = NULL;
147         struct remote *remote;
148         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
149         const char *name, *url;
150         int i;
151
152         struct option options[] = {
153                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
154                 OPT_SET_INT(0, "tags", &fetch_tags,
155                             N_("import all tags and associated objects when fetching"),
156                             TAGS_SET),
157                 OPT_SET_INT(0, NULL, &fetch_tags,
158                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
159                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
160                                 N_("branch(es) to track")),
161                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
162                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
163                         N_("set up remote as a mirror to push to or fetch from"),
164                         PARSE_OPT_OPTARG, parse_mirror_opt },
165                 OPT_END()
166         };
167
168         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
169                              0);
170
171         if (argc != 2)
172                 usage_with_options(builtin_remote_add_usage, options);
173
174         if (mirror && master)
175                 die(_("specifying a master branch makes no sense with --mirror"));
176         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
177                 die(_("specifying branches to track makes sense only with fetch mirrors"));
178
179         name = argv[0];
180         url = argv[1];
181
182         remote = remote_get(name);
183         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
184                         remote->fetch_refspec_nr))
185                 die(_("remote %s already exists."), name);
186
187         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
188         if (!valid_fetch_refspec(buf2.buf))
189                 die(_("'%s' is not a valid remote name"), name);
190
191         strbuf_addf(&buf, "remote.%s.url", name);
192         if (git_config_set(buf.buf, url))
193                 return 1;
194
195         if (!mirror || mirror & MIRROR_FETCH) {
196                 strbuf_reset(&buf);
197                 strbuf_addf(&buf, "remote.%s.fetch", name);
198                 if (track.nr == 0)
199                         string_list_append(&track, "*");
200                 for (i = 0; i < track.nr; i++) {
201                         if (add_branch(buf.buf, track.items[i].string,
202                                        name, mirror, &buf2))
203                                 return 1;
204                 }
205         }
206
207         if (mirror & MIRROR_PUSH) {
208                 strbuf_reset(&buf);
209                 strbuf_addf(&buf, "remote.%s.mirror", name);
210                 if (git_config_set(buf.buf, "true"))
211                         return 1;
212         }
213
214         if (fetch_tags != TAGS_DEFAULT) {
215                 strbuf_reset(&buf);
216                 strbuf_addf(&buf, "remote.%s.tagopt", name);
217                 if (git_config_set(buf.buf,
218                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
219                         return 1;
220         }
221
222         if (fetch && fetch_remote(name))
223                 return 1;
224
225         if (master) {
226                 strbuf_reset(&buf);
227                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
228
229                 strbuf_reset(&buf2);
230                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
231
232                 if (create_symref(buf.buf, buf2.buf, "remote add"))
233                         return error(_("Could not setup master '%s'"), master);
234         }
235
236         strbuf_release(&buf);
237         strbuf_release(&buf2);
238         string_list_clear(&track, 0);
239
240         return 0;
241 }
242
243 struct branch_info {
244         char *remote_name;
245         struct string_list merge;
246         int rebase;
247 };
248
249 static struct string_list branch_list;
250
251 static const char *abbrev_ref(const char *name, const char *prefix)
252 {
253         const char *abbrev = skip_prefix(name, prefix);
254         if (abbrev)
255                 return abbrev;
256         return name;
257 }
258 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
259
260 static int config_read_branches(const char *key, const char *value, void *cb)
261 {
262         if (starts_with(key, "branch.")) {
263                 const char *orig_key = key;
264                 char *name;
265                 struct string_list_item *item;
266                 struct branch_info *info;
267                 enum { REMOTE, MERGE, REBASE } type;
268
269                 key += 7;
270                 if (ends_with(key, ".remote")) {
271                         name = xstrndup(key, strlen(key) - 7);
272                         type = REMOTE;
273                 } else if (ends_with(key, ".merge")) {
274                         name = xstrndup(key, strlen(key) - 6);
275                         type = MERGE;
276                 } else if (ends_with(key, ".rebase")) {
277                         name = xstrndup(key, strlen(key) - 7);
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 = 1;
308                 }
309         }
310         return 0;
311 }
312
313 static void read_branches(void)
314 {
315         if (branch_list.nr)
316                 return;
317         git_config(config_read_branches, NULL);
318 }
319
320 struct ref_states {
321         struct remote *remote;
322         struct string_list new, stale, tracked, heads, push;
323         int queried;
324 };
325
326 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
327 {
328         struct ref *fetch_map = NULL, **tail = &fetch_map;
329         struct ref *ref, *stale_refs;
330         int i;
331
332         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
333                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
334                         die(_("Could not get fetch map for refspec %s"),
335                                 states->remote->fetch_refspec[i]);
336
337         states->new.strdup_strings = 1;
338         states->tracked.strdup_strings = 1;
339         states->stale.strdup_strings = 1;
340         for (ref = fetch_map; ref; ref = ref->next) {
341                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
342                         string_list_append(&states->new, abbrev_branch(ref->name));
343                 else
344                         string_list_append(&states->tracked, abbrev_branch(ref->name));
345         }
346         stale_refs = get_stale_heads(states->remote->fetch,
347                                      states->remote->fetch_refspec_nr, fetch_map);
348         for (ref = stale_refs; ref; ref = ref->next) {
349                 struct string_list_item *item =
350                         string_list_append(&states->stale, abbrev_branch(ref->name));
351                 item->util = xstrdup(ref->name);
352         }
353         free_refs(stale_refs);
354         free_refs(fetch_map);
355
356         sort_string_list(&states->new);
357         sort_string_list(&states->tracked);
358         sort_string_list(&states->stale);
359
360         return 0;
361 }
362
363 struct push_info {
364         char *dest;
365         int forced;
366         enum {
367                 PUSH_STATUS_CREATE = 0,
368                 PUSH_STATUS_DELETE,
369                 PUSH_STATUS_UPTODATE,
370                 PUSH_STATUS_FASTFORWARD,
371                 PUSH_STATUS_OUTOFDATE,
372                 PUSH_STATUS_NOTQUERIED
373         } status;
374 };
375
376 static int get_push_ref_states(const struct ref *remote_refs,
377         struct ref_states *states)
378 {
379         struct remote *remote = states->remote;
380         struct ref *ref, *local_refs, *push_map;
381         if (remote->mirror)
382                 return 0;
383
384         local_refs = get_local_heads();
385         push_map = copy_ref_list(remote_refs);
386
387         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
388                         remote->push_refspec, MATCH_REFS_NONE);
389
390         states->push.strdup_strings = 1;
391         for (ref = push_map; ref; ref = ref->next) {
392                 struct string_list_item *item;
393                 struct push_info *info;
394
395                 if (!ref->peer_ref)
396                         continue;
397                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
398
399                 item = string_list_append(&states->push,
400                                           abbrev_branch(ref->peer_ref->name));
401                 item->util = xcalloc(1, sizeof(struct push_info));
402                 info = item->util;
403                 info->forced = ref->force;
404                 info->dest = xstrdup(abbrev_branch(ref->name));
405
406                 if (is_null_sha1(ref->new_sha1)) {
407                         info->status = PUSH_STATUS_DELETE;
408                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
409                         info->status = PUSH_STATUS_UPTODATE;
410                 else if (is_null_sha1(ref->old_sha1))
411                         info->status = PUSH_STATUS_CREATE;
412                 else if (has_sha1_file(ref->old_sha1) &&
413                          ref_newer(ref->new_sha1, ref->old_sha1))
414                         info->status = PUSH_STATUS_FASTFORWARD;
415                 else
416                         info->status = PUSH_STATUS_OUTOFDATE;
417         }
418         free_refs(local_refs);
419         free_refs(push_map);
420         return 0;
421 }
422
423 static int get_push_ref_states_noquery(struct ref_states *states)
424 {
425         int i;
426         struct remote *remote = states->remote;
427         struct string_list_item *item;
428         struct push_info *info;
429
430         if (remote->mirror)
431                 return 0;
432
433         states->push.strdup_strings = 1;
434         if (!remote->push_refspec_nr) {
435                 item = string_list_append(&states->push, _("(matching)"));
436                 info = item->util = xcalloc(1, sizeof(struct push_info));
437                 info->status = PUSH_STATUS_NOTQUERIED;
438                 info->dest = xstrdup(item->string);
439         }
440         for (i = 0; i < remote->push_refspec_nr; i++) {
441                 struct refspec *spec = remote->push + i;
442                 if (spec->matching)
443                         item = string_list_append(&states->push, _("(matching)"));
444                 else if (strlen(spec->src))
445                         item = string_list_append(&states->push, spec->src);
446                 else
447                         item = string_list_append(&states->push, _("(delete)"));
448
449                 info = item->util = xcalloc(1, sizeof(struct push_info));
450                 info->forced = spec->force;
451                 info->status = PUSH_STATUS_NOTQUERIED;
452                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
453         }
454         return 0;
455 }
456
457 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
458 {
459         struct ref *ref, *matches;
460         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
461         struct refspec refspec;
462
463         refspec.force = 0;
464         refspec.pattern = 1;
465         refspec.src = refspec.dst = "refs/heads/*";
466         states->heads.strdup_strings = 1;
467         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
468         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
469                                     fetch_map, 1);
470         for (ref = matches; ref; ref = ref->next)
471                 string_list_append(&states->heads, abbrev_branch(ref->name));
472
473         free_refs(fetch_map);
474         free_refs(matches);
475
476         return 0;
477 }
478
479 struct known_remote {
480         struct known_remote *next;
481         struct remote *remote;
482 };
483
484 struct known_remotes {
485         struct remote *to_delete;
486         struct known_remote *list;
487 };
488
489 static int add_known_remote(struct remote *remote, void *cb_data)
490 {
491         struct known_remotes *all = cb_data;
492         struct known_remote *r;
493
494         if (!strcmp(all->to_delete->name, remote->name))
495                 return 0;
496
497         r = xmalloc(sizeof(*r));
498         r->remote = remote;
499         r->next = all->list;
500         all->list = r;
501         return 0;
502 }
503
504 struct branches_for_remote {
505         struct remote *remote;
506         struct string_list *branches, *skipped;
507         struct known_remotes *keep;
508 };
509
510 static int add_branch_for_removal(const char *refname,
511         const unsigned char *sha1, int flags, void *cb_data)
512 {
513         struct branches_for_remote *branches = cb_data;
514         struct refspec refspec;
515         struct string_list_item *item;
516         struct known_remote *kr;
517
518         memset(&refspec, 0, sizeof(refspec));
519         refspec.dst = (char *)refname;
520         if (remote_find_tracking(branches->remote, &refspec))
521                 return 0;
522
523         /* don't delete a branch if another remote also uses it */
524         for (kr = branches->keep->list; kr; kr = kr->next) {
525                 memset(&refspec, 0, sizeof(refspec));
526                 refspec.dst = (char *)refname;
527                 if (!remote_find_tracking(kr->remote, &refspec))
528                         return 0;
529         }
530
531         /* don't delete non-remote-tracking refs */
532         if (!starts_with(refname, "refs/remotes/")) {
533                 /* advise user how to delete local branches */
534                 if (starts_with(refname, "refs/heads/"))
535                         string_list_append(branches->skipped,
536                                            abbrev_branch(refname));
537                 /* silently skip over other non-remote refs */
538                 return 0;
539         }
540
541         /* make sure that symrefs are deleted */
542         if (flags & REF_ISSYMREF)
543                 return unlink(git_path("%s", refname));
544
545         item = string_list_append(branches->branches, refname);
546         item->util = xmalloc(20);
547         hashcpy(item->util, sha1);
548
549         return 0;
550 }
551
552 struct rename_info {
553         const char *old;
554         const char *new;
555         struct string_list *remote_branches;
556 };
557
558 static int read_remote_branches(const char *refname,
559         const unsigned char *sha1, int flags, void *cb_data)
560 {
561         struct rename_info *rename = cb_data;
562         struct strbuf buf = STRBUF_INIT;
563         struct string_list_item *item;
564         int flag;
565         unsigned char orig_sha1[20];
566         const char *symref;
567
568         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
569         if (starts_with(refname, buf.buf)) {
570                 item = string_list_append(rename->remote_branches, xstrdup(refname));
571                 symref = resolve_ref_unsafe(refname, orig_sha1, 1, &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         char *path = NULL;
586
587         strbuf_addf(&buf, "remote.%s.url", remote->name);
588         for (i = 0; i < remote->url_nr; i++)
589                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
590                         return error(_("Could not append '%s' to '%s'"),
591                                         remote->url[i], buf.buf);
592         strbuf_reset(&buf);
593         strbuf_addf(&buf, "remote.%s.push", remote->name);
594         for (i = 0; i < remote->push_refspec_nr; i++)
595                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
596                         return error(_("Could not append '%s' to '%s'"),
597                                         remote->push_refspec[i], buf.buf);
598         strbuf_reset(&buf);
599         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
600         for (i = 0; i < remote->fetch_refspec_nr; i++)
601                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
602                         return error(_("Could not append '%s' to '%s'"),
603                                         remote->fetch_refspec[i], buf.buf);
604         if (remote->origin == REMOTE_REMOTES)
605                 path = git_path("remotes/%s", remote->name);
606         else if (remote->origin == REMOTE_BRANCHES)
607                 path = git_path("branches/%s", remote->name);
608         if (path)
609                 unlink_or_warn(path);
610         return 0;
611 }
612
613 static int mv(int argc, const char **argv)
614 {
615         struct option options[] = {
616                 OPT_END()
617         };
618         struct remote *oldremote, *newremote;
619         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
620                 old_remote_context = STRBUF_INIT;
621         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
622         struct rename_info rename;
623         int i, refspec_updated = 0;
624
625         if (argc != 3)
626                 usage_with_options(builtin_remote_rename_usage, options);
627
628         rename.old = argv[1];
629         rename.new = argv[2];
630         rename.remote_branches = &remote_branches;
631
632         oldremote = remote_get(rename.old);
633         if (!oldremote)
634                 die(_("No such remote: %s"), rename.old);
635
636         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
637                 return migrate_file(oldremote);
638
639         newremote = remote_get(rename.new);
640         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
641                 die(_("remote %s already exists."), rename.new);
642
643         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
644         if (!valid_fetch_refspec(buf.buf))
645                 die(_("'%s' is not a valid remote name"), rename.new);
646
647         strbuf_reset(&buf);
648         strbuf_addf(&buf, "remote.%s", rename.old);
649         strbuf_addf(&buf2, "remote.%s", rename.new);
650         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
651                 return error(_("Could not rename config section '%s' to '%s'"),
652                                 buf.buf, buf2.buf);
653
654         strbuf_reset(&buf);
655         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
656         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
657                 return error(_("Could not remove config section '%s'"), buf.buf);
658         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
659         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
660                 char *ptr;
661
662                 strbuf_reset(&buf2);
663                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
664                 ptr = strstr(buf2.buf, old_remote_context.buf);
665                 if (ptr) {
666                         refspec_updated = 1;
667                         strbuf_splice(&buf2,
668                                       ptr-buf2.buf + strlen(":refs/remotes/"),
669                                       strlen(rename.old), rename.new,
670                                       strlen(rename.new));
671                 } else
672                         warning(_("Not updating non-default fetch refspec\n"
673                                   "\t%s\n"
674                                   "\tPlease update the configuration manually if necessary."),
675                                 buf2.buf);
676
677                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
678                         return error(_("Could not append '%s'"), buf.buf);
679         }
680
681         read_branches();
682         for (i = 0; i < branch_list.nr; i++) {
683                 struct string_list_item *item = branch_list.items + i;
684                 struct branch_info *info = item->util;
685                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
686                         strbuf_reset(&buf);
687                         strbuf_addf(&buf, "branch.%s.remote", item->string);
688                         if (git_config_set(buf.buf, rename.new)) {
689                                 return error(_("Could not set '%s'"), buf.buf);
690                         }
691                 }
692         }
693
694         if (!refspec_updated)
695                 return 0;
696
697         /*
698          * First remove symrefs, then rename the rest, finally create
699          * the new symrefs.
700          */
701         for_each_ref(read_remote_branches, &rename);
702         for (i = 0; i < remote_branches.nr; i++) {
703                 struct string_list_item *item = remote_branches.items + i;
704                 int flag = 0;
705                 unsigned char sha1[20];
706
707                 read_ref_full(item->string, sha1, 1, &flag);
708                 if (!(flag & REF_ISSYMREF))
709                         continue;
710                 if (delete_ref(item->string, NULL, REF_NODEREF))
711                         die(_("deleting '%s' failed"), item->string);
712         }
713         for (i = 0; i < remote_branches.nr; i++) {
714                 struct string_list_item *item = remote_branches.items + i;
715
716                 if (item->util)
717                         continue;
718                 strbuf_reset(&buf);
719                 strbuf_addstr(&buf, item->string);
720                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
721                                 rename.new, strlen(rename.new));
722                 strbuf_reset(&buf2);
723                 strbuf_addf(&buf2, "remote: renamed %s to %s",
724                                 item->string, buf.buf);
725                 if (rename_ref(item->string, buf.buf, buf2.buf))
726                         die(_("renaming '%s' failed"), item->string);
727         }
728         for (i = 0; i < remote_branches.nr; i++) {
729                 struct string_list_item *item = remote_branches.items + i;
730
731                 if (!item->util)
732                         continue;
733                 strbuf_reset(&buf);
734                 strbuf_addstr(&buf, item->string);
735                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
736                                 rename.new, strlen(rename.new));
737                 strbuf_reset(&buf2);
738                 strbuf_addstr(&buf2, item->util);
739                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
740                                 rename.new, strlen(rename.new));
741                 strbuf_reset(&buf3);
742                 strbuf_addf(&buf3, "remote: renamed %s to %s",
743                                 item->string, buf.buf);
744                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
745                         die(_("creating '%s' failed"), buf.buf);
746         }
747         return 0;
748 }
749
750 static int remove_branches(struct string_list *branches)
751 {
752         const char **branch_names;
753         int i, result = 0;
754
755         branch_names = xmalloc(branches->nr * sizeof(*branch_names));
756         for (i = 0; i < branches->nr; i++)
757                 branch_names[i] = branches->items[i].string;
758         result |= repack_without_refs(branch_names, branches->nr);
759         free(branch_names);
760
761         for (i = 0; i < branches->nr; i++) {
762                 struct string_list_item *item = branches->items + i;
763                 const char *refname = item->string;
764
765                 if (delete_ref(refname, NULL, 0))
766                         result |= error(_("Could not remove branch %s"), refname);
767         }
768
769         return result;
770 }
771
772 static int rm(int argc, const char **argv)
773 {
774         struct option options[] = {
775                 OPT_END()
776         };
777         struct remote *remote;
778         struct strbuf buf = STRBUF_INIT;
779         struct known_remotes known_remotes = { NULL, NULL };
780         struct string_list branches = STRING_LIST_INIT_DUP;
781         struct string_list skipped = STRING_LIST_INIT_DUP;
782         struct branches_for_remote cb_data;
783         int i, result;
784
785         memset(&cb_data, 0, sizeof(cb_data));
786         cb_data.branches = &branches;
787         cb_data.skipped = &skipped;
788         cb_data.keep = &known_remotes;
789
790         if (argc != 2)
791                 usage_with_options(builtin_remote_rm_usage, options);
792
793         remote = remote_get(argv[1]);
794         if (!remote)
795                 die(_("No such remote: %s"), argv[1]);
796
797         known_remotes.to_delete = remote;
798         for_each_remote(add_known_remote, &known_remotes);
799
800         read_branches();
801         for (i = 0; i < branch_list.nr; i++) {
802                 struct string_list_item *item = branch_list.items + i;
803                 struct branch_info *info = item->util;
804                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
805                         const char *keys[] = { "remote", "merge", NULL }, **k;
806                         for (k = keys; *k; k++) {
807                                 strbuf_reset(&buf);
808                                 strbuf_addf(&buf, "branch.%s.%s",
809                                                 item->string, *k);
810                                 if (git_config_set(buf.buf, NULL)) {
811                                         strbuf_release(&buf);
812                                         return -1;
813                                 }
814                         }
815                 }
816         }
817
818         /*
819          * We cannot just pass a function to for_each_ref() which deletes
820          * the branches one by one, since for_each_ref() relies on cached
821          * refs, which are invalidated when deleting a branch.
822          */
823         cb_data.remote = remote;
824         result = for_each_ref(add_branch_for_removal, &cb_data);
825         strbuf_release(&buf);
826
827         if (!result)
828                 result = remove_branches(&branches);
829         string_list_clear(&branches, 1);
830
831         if (skipped.nr) {
832                 fprintf_ln(stderr,
833                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
834                               "to delete it, use:",
835                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
836                               "to delete them, use:",
837                               skipped.nr));
838                 for (i = 0; i < skipped.nr; i++)
839                         fprintf(stderr, "  git branch -d %s\n",
840                                 skipped.items[i].string);
841         }
842         string_list_clear(&skipped, 0);
843
844         if (!result) {
845                 strbuf_addf(&buf, "remote.%s", remote->name);
846                 if (git_config_rename_section(buf.buf, NULL) < 1)
847                         return error(_("Could not remove config section '%s'"), buf.buf);
848         }
849
850         return result;
851 }
852
853 static void clear_push_info(void *util, const char *string)
854 {
855         struct push_info *info = util;
856         free(info->dest);
857         free(info);
858 }
859
860 static void free_remote_ref_states(struct ref_states *states)
861 {
862         string_list_clear(&states->new, 0);
863         string_list_clear(&states->stale, 1);
864         string_list_clear(&states->tracked, 0);
865         string_list_clear(&states->heads, 0);
866         string_list_clear_func(&states->push, clear_push_info);
867 }
868
869 static int append_ref_to_tracked_list(const char *refname,
870         const unsigned char *sha1, int flags, void *cb_data)
871 {
872         struct ref_states *states = cb_data;
873         struct refspec refspec;
874
875         if (flags & REF_ISSYMREF)
876                 return 0;
877
878         memset(&refspec, 0, sizeof(refspec));
879         refspec.dst = (char *)refname;
880         if (!remote_find_tracking(states->remote, &refspec))
881                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
882
883         return 0;
884 }
885
886 static int get_remote_ref_states(const char *name,
887                                  struct ref_states *states,
888                                  int query)
889 {
890         struct transport *transport;
891         const struct ref *remote_refs;
892
893         states->remote = remote_get(name);
894         if (!states->remote)
895                 return error(_("No such remote: %s"), name);
896
897         read_branches();
898
899         if (query) {
900                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
901                         states->remote->url[0] : NULL);
902                 remote_refs = transport_get_remote_refs(transport);
903                 transport_disconnect(transport);
904
905                 states->queried = 1;
906                 if (query & GET_REF_STATES)
907                         get_ref_states(remote_refs, states);
908                 if (query & GET_HEAD_NAMES)
909                         get_head_names(remote_refs, states);
910                 if (query & GET_PUSH_REF_STATES)
911                         get_push_ref_states(remote_refs, states);
912         } else {
913                 for_each_ref(append_ref_to_tracked_list, states);
914                 sort_string_list(&states->tracked);
915                 get_push_ref_states_noquery(states);
916         }
917
918         return 0;
919 }
920
921 struct show_info {
922         struct string_list *list;
923         struct ref_states *states;
924         int width, width2;
925         int any_rebase;
926 };
927
928 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
929 {
930         struct show_info *info = cb_data;
931         int n = strlen(item->string);
932         if (n > info->width)
933                 info->width = n;
934         string_list_insert(info->list, item->string);
935         return 0;
936 }
937
938 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
939 {
940         struct show_info *info = cb_data;
941         struct ref_states *states = info->states;
942         const char *name = item->string;
943
944         if (states->queried) {
945                 const char *fmt = "%s";
946                 const char *arg = "";
947                 if (string_list_has_string(&states->new, name)) {
948                         fmt = _(" new (next fetch will store in remotes/%s)");
949                         arg = states->remote->name;
950                 } else if (string_list_has_string(&states->tracked, name))
951                         arg = _(" tracked");
952                 else if (string_list_has_string(&states->stale, name))
953                         arg = _(" stale (use 'git remote prune' to remove)");
954                 else
955                         arg = _(" ???");
956                 printf("    %-*s", info->width, name);
957                 printf(fmt, arg);
958                 printf("\n");
959         } else
960                 printf("    %s\n", name);
961
962         return 0;
963 }
964
965 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
966 {
967         struct show_info *show_info = cb_data;
968         struct ref_states *states = show_info->states;
969         struct branch_info *branch_info = branch_item->util;
970         struct string_list_item *item;
971         int n;
972
973         if (!branch_info->merge.nr || !branch_info->remote_name ||
974             strcmp(states->remote->name, branch_info->remote_name))
975                 return 0;
976         if ((n = strlen(branch_item->string)) > show_info->width)
977                 show_info->width = n;
978         if (branch_info->rebase)
979                 show_info->any_rebase = 1;
980
981         item = string_list_insert(show_info->list, branch_item->string);
982         item->util = branch_info;
983
984         return 0;
985 }
986
987 static int show_local_info_item(struct string_list_item *item, void *cb_data)
988 {
989         struct show_info *show_info = cb_data;
990         struct branch_info *branch_info = item->util;
991         struct string_list *merge = &branch_info->merge;
992         const char *also;
993         int i;
994
995         if (branch_info->rebase && branch_info->merge.nr > 1) {
996                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
997                         item->string);
998                 return 0;
999         }
1000
1001         printf("    %-*s ", show_info->width, item->string);
1002         if (branch_info->rebase) {
1003                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
1004                 return 0;
1005         } else if (show_info->any_rebase) {
1006                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1007                 also = _("    and with remote");
1008         } else {
1009                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1010                 also = _("   and with remote");
1011         }
1012         for (i = 1; i < merge->nr; i++)
1013                 printf("    %-*s %s %s\n", show_info->width, "", also,
1014                        merge->items[i].string);
1015
1016         return 0;
1017 }
1018
1019 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1020 {
1021         struct show_info *show_info = cb_data;
1022         struct push_info *push_info = push_item->util;
1023         struct string_list_item *item;
1024         int n;
1025         if ((n = strlen(push_item->string)) > show_info->width)
1026                 show_info->width = n;
1027         if ((n = strlen(push_info->dest)) > show_info->width2)
1028                 show_info->width2 = n;
1029         item = string_list_append(show_info->list, push_item->string);
1030         item->util = push_item->util;
1031         return 0;
1032 }
1033
1034 /*
1035  * Sorting comparison for a string list that has push_info
1036  * structs in its util field
1037  */
1038 static int cmp_string_with_push(const void *va, const void *vb)
1039 {
1040         const struct string_list_item *a = va;
1041         const struct string_list_item *b = vb;
1042         const struct push_info *a_push = a->util;
1043         const struct push_info *b_push = b->util;
1044         int cmp = strcmp(a->string, b->string);
1045         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1046 }
1047
1048 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1049 {
1050         struct show_info *show_info = cb_data;
1051         struct push_info *push_info = item->util;
1052         const char *src = item->string, *status = NULL;
1053
1054         switch (push_info->status) {
1055         case PUSH_STATUS_CREATE:
1056                 status = _("create");
1057                 break;
1058         case PUSH_STATUS_DELETE:
1059                 status = _("delete");
1060                 src = _("(none)");
1061                 break;
1062         case PUSH_STATUS_UPTODATE:
1063                 status = _("up to date");
1064                 break;
1065         case PUSH_STATUS_FASTFORWARD:
1066                 status = _("fast-forwardable");
1067                 break;
1068         case PUSH_STATUS_OUTOFDATE:
1069                 status = _("local out of date");
1070                 break;
1071         case PUSH_STATUS_NOTQUERIED:
1072                 break;
1073         }
1074         if (status) {
1075                 if (push_info->forced)
1076                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1077                                show_info->width2, push_info->dest, status);
1078                 else
1079                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1080                                show_info->width2, push_info->dest, status);
1081         } else {
1082                 if (push_info->forced)
1083                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1084                                push_info->dest);
1085                 else
1086                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1087                                push_info->dest);
1088         }
1089         return 0;
1090 }
1091
1092 static int get_one_entry(struct remote *remote, void *priv)
1093 {
1094         struct string_list *list = priv;
1095         struct strbuf url_buf = STRBUF_INIT;
1096         const char **url;
1097         int i, url_nr;
1098
1099         if (remote->url_nr > 0) {
1100                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1101                 string_list_append(list, remote->name)->util =
1102                                 strbuf_detach(&url_buf, NULL);
1103         } else
1104                 string_list_append(list, remote->name)->util = NULL;
1105         if (remote->pushurl_nr) {
1106                 url = remote->pushurl;
1107                 url_nr = remote->pushurl_nr;
1108         } else {
1109                 url = remote->url;
1110                 url_nr = remote->url_nr;
1111         }
1112         for (i = 0; i < url_nr; i++)
1113         {
1114                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1115                 string_list_append(list, remote->name)->util =
1116                                 strbuf_detach(&url_buf, NULL);
1117         }
1118
1119         return 0;
1120 }
1121
1122 static int show_all(void)
1123 {
1124         struct string_list list = STRING_LIST_INIT_NODUP;
1125         int result;
1126
1127         list.strdup_strings = 1;
1128         result = for_each_remote(get_one_entry, &list);
1129
1130         if (!result) {
1131                 int i;
1132
1133                 sort_string_list(&list);
1134                 for (i = 0; i < list.nr; i++) {
1135                         struct string_list_item *item = list.items + i;
1136                         if (verbose)
1137                                 printf("%s\t%s\n", item->string,
1138                                         item->util ? (const char *)item->util : "");
1139                         else {
1140                                 if (i && !strcmp((item - 1)->string, item->string))
1141                                         continue;
1142                                 printf("%s\n", item->string);
1143                         }
1144                 }
1145         }
1146         string_list_clear(&list, 1);
1147         return result;
1148 }
1149
1150 static int show(int argc, const char **argv)
1151 {
1152         int no_query = 0, result = 0, query_flag = 0;
1153         struct option options[] = {
1154                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1155                 OPT_END()
1156         };
1157         struct ref_states states;
1158         struct string_list info_list = STRING_LIST_INIT_NODUP;
1159         struct show_info info;
1160
1161         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1162                              0);
1163
1164         if (argc < 1)
1165                 return show_all();
1166
1167         if (!no_query)
1168                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1169
1170         memset(&states, 0, sizeof(states));
1171         memset(&info, 0, sizeof(info));
1172         info.states = &states;
1173         info.list = &info_list;
1174         for (; argc; argc--, argv++) {
1175                 int i;
1176                 const char **url;
1177                 int url_nr;
1178
1179                 get_remote_ref_states(*argv, &states, query_flag);
1180
1181                 printf_ln(_("* remote %s"), *argv);
1182                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1183                        states.remote->url[0] : _("(no URL)"));
1184                 if (states.remote->pushurl_nr) {
1185                         url = states.remote->pushurl;
1186                         url_nr = states.remote->pushurl_nr;
1187                 } else {
1188                         url = states.remote->url;
1189                         url_nr = states.remote->url_nr;
1190                 }
1191                 for (i = 0; i < url_nr; i++)
1192                         printf_ln(_("  Push  URL: %s"), url[i]);
1193                 if (!i)
1194                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1195                 if (no_query)
1196                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1197                 else if (!states.heads.nr)
1198                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1199                 else if (states.heads.nr == 1)
1200                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1201                 else {
1202                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1203                                  " may be one of the following):\n"));
1204                         for (i = 0; i < states.heads.nr; i++)
1205                                 printf("    %s\n", states.heads.items[i].string);
1206                 }
1207
1208                 /* remote branch info */
1209                 info.width = 0;
1210                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1211                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1212                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1213                 if (info.list->nr)
1214                         printf_ln(Q_("  Remote branch:%s",
1215                                      "  Remote branches:%s",
1216                                      info.list->nr),
1217                                   no_query ? _(" (status not queried)") : "");
1218                 for_each_string_list(info.list, show_remote_info_item, &info);
1219                 string_list_clear(info.list, 0);
1220
1221                 /* git pull info */
1222                 info.width = 0;
1223                 info.any_rebase = 0;
1224                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1225                 if (info.list->nr)
1226                         printf_ln(Q_("  Local branch configured for 'git pull':",
1227                                      "  Local branches configured for 'git pull':",
1228                                      info.list->nr));
1229                 for_each_string_list(info.list, show_local_info_item, &info);
1230                 string_list_clear(info.list, 0);
1231
1232                 /* git push info */
1233                 if (states.remote->mirror)
1234                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1235
1236                 info.width = info.width2 = 0;
1237                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1238                 qsort(info.list->items, info.list->nr,
1239                         sizeof(*info.list->items), cmp_string_with_push);
1240                 if (info.list->nr)
1241                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1242                                      "  Local refs configured for 'git push'%s:",
1243                                      info.list->nr),
1244                                   no_query ? _(" (status not queried)") : "");
1245                 for_each_string_list(info.list, show_push_info_item, &info);
1246                 string_list_clear(info.list, 0);
1247
1248                 free_remote_ref_states(&states);
1249         }
1250
1251         return result;
1252 }
1253
1254 static int set_head(int argc, const char **argv)
1255 {
1256         int i, opt_a = 0, opt_d = 0, result = 0;
1257         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1258         char *head_name = NULL;
1259
1260         struct option options[] = {
1261                 OPT_BOOL('a', "auto", &opt_a,
1262                          N_("set refs/remotes/<name>/HEAD according to remote")),
1263                 OPT_BOOL('d', "delete", &opt_d,
1264                          N_("delete refs/remotes/<name>/HEAD")),
1265                 OPT_END()
1266         };
1267         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1268                              0);
1269         if (argc)
1270                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1271
1272         if (!opt_a && !opt_d && argc == 2) {
1273                 head_name = xstrdup(argv[1]);
1274         } else if (opt_a && !opt_d && argc == 1) {
1275                 struct ref_states states;
1276                 memset(&states, 0, sizeof(states));
1277                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1278                 if (!states.heads.nr)
1279                         result |= error(_("Cannot determine remote HEAD"));
1280                 else if (states.heads.nr > 1) {
1281                         result |= error(_("Multiple remote HEAD branches. "
1282                                           "Please choose one explicitly with:"));
1283                         for (i = 0; i < states.heads.nr; i++)
1284                                 fprintf(stderr, "  git remote set-head %s %s\n",
1285                                         argv[0], states.heads.items[i].string);
1286                 } else
1287                         head_name = xstrdup(states.heads.items[0].string);
1288                 free_remote_ref_states(&states);
1289         } else if (opt_d && !opt_a && argc == 1) {
1290                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1291                         result |= error(_("Could not delete %s"), buf.buf);
1292         } else
1293                 usage_with_options(builtin_remote_sethead_usage, options);
1294
1295         if (head_name) {
1296                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1297                 /* make sure it's valid */
1298                 if (!ref_exists(buf2.buf))
1299                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1300                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1301                         result |= error(_("Could not setup %s"), buf.buf);
1302                 if (opt_a)
1303                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1304                 free(head_name);
1305         }
1306
1307         strbuf_release(&buf);
1308         strbuf_release(&buf2);
1309         return result;
1310 }
1311
1312 static int prune_remote(const char *remote, int dry_run)
1313 {
1314         int result = 0, i;
1315         struct ref_states states;
1316         struct string_list delete_refs_list = STRING_LIST_INIT_NODUP;
1317         const char **delete_refs;
1318         const char *dangling_msg = dry_run
1319                 ? _(" %s will become dangling!")
1320                 : _(" %s has become dangling!");
1321
1322         memset(&states, 0, sizeof(states));
1323         get_remote_ref_states(remote, &states, GET_REF_STATES);
1324
1325         if (states.stale.nr) {
1326                 printf_ln(_("Pruning %s"), remote);
1327                 printf_ln(_("URL: %s"),
1328                        states.remote->url_nr
1329                        ? states.remote->url[0]
1330                        : _("(no URL)"));
1331
1332                 delete_refs = xmalloc(states.stale.nr * sizeof(*delete_refs));
1333                 for (i = 0; i < states.stale.nr; i++)
1334                         delete_refs[i] = states.stale.items[i].util;
1335                 if (!dry_run)
1336                         result |= repack_without_refs(delete_refs, states.stale.nr);
1337                 free(delete_refs);
1338         }
1339
1340         for (i = 0; i < states.stale.nr; i++) {
1341                 const char *refname = states.stale.items[i].util;
1342
1343                 string_list_insert(&delete_refs_list, refname);
1344
1345                 if (!dry_run)
1346                         result |= delete_ref(refname, NULL, 0);
1347
1348                 if (dry_run)
1349                         printf_ln(_(" * [would prune] %s"),
1350                                abbrev_ref(refname, "refs/remotes/"));
1351                 else
1352                         printf_ln(_(" * [pruned] %s"),
1353                                abbrev_ref(refname, "refs/remotes/"));
1354         }
1355
1356         warn_dangling_symrefs(stdout, dangling_msg, &delete_refs_list);
1357         string_list_clear(&delete_refs_list, 0);
1358
1359         free_remote_ref_states(&states);
1360         return result;
1361 }
1362
1363 static int prune(int argc, const char **argv)
1364 {
1365         int dry_run = 0, result = 0;
1366         struct option options[] = {
1367                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1368                 OPT_END()
1369         };
1370
1371         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1372                              0);
1373
1374         if (argc < 1)
1375                 usage_with_options(builtin_remote_prune_usage, options);
1376
1377         for (; argc; argc--, argv++)
1378                 result |= prune_remote(*argv, dry_run);
1379
1380         return result;
1381 }
1382
1383 static int get_remote_default(const char *key, const char *value, void *priv)
1384 {
1385         if (strcmp(key, "remotes.default") == 0) {
1386                 int *found = priv;
1387                 *found = 1;
1388         }
1389         return 0;
1390 }
1391
1392 static int update(int argc, const char **argv)
1393 {
1394         int i, prune = -1;
1395         struct option options[] = {
1396                 OPT_BOOL('p', "prune", &prune,
1397                          N_("prune remotes after fetching")),
1398                 OPT_END()
1399         };
1400         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1401         int default_defined = 0;
1402         int retval;
1403
1404         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1405                              PARSE_OPT_KEEP_ARGV0);
1406
1407         argv_array_push(&fetch_argv, "fetch");
1408
1409         if (prune != -1)
1410                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1411         if (verbose)
1412                 argv_array_push(&fetch_argv, "-v");
1413         argv_array_push(&fetch_argv, "--multiple");
1414         if (argc < 2)
1415                 argv_array_push(&fetch_argv, "default");
1416         for (i = 1; i < argc; i++)
1417                 argv_array_push(&fetch_argv, argv[i]);
1418
1419         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1420                 git_config(get_remote_default, &default_defined);
1421                 if (!default_defined) {
1422                         argv_array_pop(&fetch_argv);
1423                         argv_array_push(&fetch_argv, "--all");
1424                 }
1425         }
1426
1427         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1428         argv_array_clear(&fetch_argv);
1429         return retval;
1430 }
1431
1432 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1433 {
1434         return git_config_set_multivar(key, NULL, NULL, 1);
1435 }
1436
1437 static int add_branches(struct remote *remote, const char **branches,
1438                         const char *key)
1439 {
1440         const char *remotename = remote->name;
1441         int mirror = remote->mirror;
1442         struct strbuf refspec = STRBUF_INIT;
1443
1444         for (; *branches; branches++)
1445                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1446                         strbuf_release(&refspec);
1447                         return 1;
1448                 }
1449
1450         strbuf_release(&refspec);
1451         return 0;
1452 }
1453
1454 static int set_remote_branches(const char *remotename, const char **branches,
1455                                 int add_mode)
1456 {
1457         struct strbuf key = STRBUF_INIT;
1458         struct remote *remote;
1459
1460         strbuf_addf(&key, "remote.%s.fetch", remotename);
1461
1462         if (!remote_is_configured(remotename))
1463                 die(_("No such remote '%s'"), remotename);
1464         remote = remote_get(remotename);
1465
1466         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1467                 strbuf_release(&key);
1468                 return 1;
1469         }
1470         if (add_branches(remote, branches, key.buf)) {
1471                 strbuf_release(&key);
1472                 return 1;
1473         }
1474
1475         strbuf_release(&key);
1476         return 0;
1477 }
1478
1479 static int set_branches(int argc, const char **argv)
1480 {
1481         int add_mode = 0;
1482         struct option options[] = {
1483                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1484                 OPT_END()
1485         };
1486
1487         argc = parse_options(argc, argv, NULL, options,
1488                              builtin_remote_setbranches_usage, 0);
1489         if (argc == 0) {
1490                 error(_("no remote specified"));
1491                 usage_with_options(builtin_remote_setbranches_usage, options);
1492         }
1493         argv[argc] = NULL;
1494
1495         return set_remote_branches(argv[0], argv + 1, add_mode);
1496 }
1497
1498 static int set_url(int argc, const char **argv)
1499 {
1500         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1501         int matches = 0, negative_matches = 0;
1502         const char *remotename = NULL;
1503         const char *newurl = NULL;
1504         const char *oldurl = NULL;
1505         struct remote *remote;
1506         regex_t old_regex;
1507         const char **urlset;
1508         int urlset_nr;
1509         struct strbuf name_buf = STRBUF_INIT;
1510         struct option options[] = {
1511                 OPT_BOOL('\0', "push", &push_mode,
1512                          N_("manipulate push URLs")),
1513                 OPT_BOOL('\0', "add", &add_mode,
1514                          N_("add URL")),
1515                 OPT_BOOL('\0', "delete", &delete_mode,
1516                             N_("delete URLs")),
1517                 OPT_END()
1518         };
1519         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1520                              PARSE_OPT_KEEP_ARGV0);
1521
1522         if (add_mode && delete_mode)
1523                 die(_("--add --delete doesn't make sense"));
1524
1525         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1526                 usage_with_options(builtin_remote_seturl_usage, options);
1527
1528         remotename = argv[1];
1529         newurl = argv[2];
1530         if (argc > 3)
1531                 oldurl = argv[3];
1532
1533         if (delete_mode)
1534                 oldurl = newurl;
1535
1536         if (!remote_is_configured(remotename))
1537                 die(_("No such remote '%s'"), remotename);
1538         remote = remote_get(remotename);
1539
1540         if (push_mode) {
1541                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1542                 urlset = remote->pushurl;
1543                 urlset_nr = remote->pushurl_nr;
1544         } else {
1545                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1546                 urlset = remote->url;
1547                 urlset_nr = remote->url_nr;
1548         }
1549
1550         /* Special cases that add new entry. */
1551         if ((!oldurl && !delete_mode) || add_mode) {
1552                 if (add_mode)
1553                         git_config_set_multivar(name_buf.buf, newurl,
1554                                 "^$", 0);
1555                 else
1556                         git_config_set(name_buf.buf, newurl);
1557                 strbuf_release(&name_buf);
1558                 return 0;
1559         }
1560
1561         /* Old URL specified. Demand that one matches. */
1562         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1563                 die(_("Invalid old URL pattern: %s"), oldurl);
1564
1565         for (i = 0; i < urlset_nr; i++)
1566                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1567                         matches++;
1568                 else
1569                         negative_matches++;
1570         if (!delete_mode && !matches)
1571                 die(_("No such URL found: %s"), oldurl);
1572         if (delete_mode && !negative_matches && !push_mode)
1573                 die(_("Will not delete all non-push URLs"));
1574
1575         regfree(&old_regex);
1576
1577         if (!delete_mode)
1578                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1579         else
1580                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1581         return 0;
1582 }
1583
1584 int cmd_remote(int argc, const char **argv, const char *prefix)
1585 {
1586         struct option options[] = {
1587                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1588                 OPT_END()
1589         };
1590         int result;
1591
1592         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1593                 PARSE_OPT_STOP_AT_NON_OPTION);
1594
1595         if (argc < 1)
1596                 result = show_all();
1597         else if (!strcmp(argv[0], "add"))
1598                 result = add(argc, argv);
1599         else if (!strcmp(argv[0], "rename"))
1600                 result = mv(argc, argv);
1601         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1602                 result = rm(argc, argv);
1603         else if (!strcmp(argv[0], "set-head"))
1604                 result = set_head(argc, argv);
1605         else if (!strcmp(argv[0], "set-branches"))
1606                 result = set_branches(argc, argv);
1607         else if (!strcmp(argv[0], "set-url"))
1608                 result = set_url(argc, argv);
1609         else if (!strcmp(argv[0], "show"))
1610                 result = show(argc, argv);
1611         else if (!strcmp(argv[0], "prune"))
1612                 result = prune(argc, argv);
1613         else if (!strcmp(argv[0], "update"))
1614                 result = update(argc, argv);
1615         else {
1616                 error(_("Unknown subcommand: %s"), argv[0]);
1617                 usage_with_options(builtin_remote_usage, options);
1618         }
1619
1620         return result ? 1 : 0;
1621 }