Merge branch 'ms/reflog-show-is-default' into maint
[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
10 static const char * const builtin_remote_usage[] = {
11         "git remote [-v | --verbose]",
12         "git remote add [-t <branch>] [-m <master>] [-f] [--mirror=<fetch|push>] <name> <url>",
13         "git remote rename <old> <new>",
14         "git remote rm <name>",
15         "git remote set-head <name> (-a | -d | <branch>)",
16         "git remote [-v | --verbose] show [-n] <name>",
17         "git remote prune [-n | --dry-run] <name>",
18         "git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]",
19         "git remote set-branches <name> [--add] <branch>...",
20         "git remote set-url <name> <newurl> [<oldurl>]",
21         "git remote set-url --add <name> <newurl>",
22         "git remote set-url --delete <name> <url>",
23         NULL
24 };
25
26 static const char * const builtin_remote_add_usage[] = {
27         "git remote add [<options>] <name> <url>",
28         NULL
29 };
30
31 static const char * const builtin_remote_rename_usage[] = {
32         "git remote rename <old> <new>",
33         NULL
34 };
35
36 static const char * const builtin_remote_rm_usage[] = {
37         "git remote rm <name>",
38         NULL
39 };
40
41 static const char * const builtin_remote_sethead_usage[] = {
42         "git remote set-head <name> (-a | -d | <branch>])",
43         NULL
44 };
45
46 static const char * const builtin_remote_setbranches_usage[] = {
47         "git remote set-branches <name> <branch>...",
48         "git remote set-branches --add <name> <branch>...",
49         NULL
50 };
51
52 static const char * const builtin_remote_show_usage[] = {
53         "git remote show [<options>] <name>",
54         NULL
55 };
56
57 static const char * const builtin_remote_prune_usage[] = {
58         "git remote prune [<options>] <name>",
59         NULL
60 };
61
62 static const char * const builtin_remote_update_usage[] = {
63         "git remote update [<options>] [<group> | <remote>]...",
64         NULL
65 };
66
67 static const char * const builtin_remote_seturl_usage[] = {
68         "git remote set-url [--push] <name> <newurl> [<oldurl>]",
69         "git remote set-url --add <name> <newurl>",
70         "git remote set-url --delete <name> <url>",
71         NULL
72 };
73
74 #define GET_REF_STATES (1<<0)
75 #define GET_HEAD_NAMES (1<<1)
76 #define GET_PUSH_REF_STATES (1<<2)
77
78 static int verbose;
79
80 static int show_all(void);
81 static int prune_remote(const char *remote, int dry_run);
82
83 static inline int postfixcmp(const char *string, const char *postfix)
84 {
85         int len1 = strlen(string), len2 = strlen(postfix);
86         if (len1 < len2)
87                 return 1;
88         return strcmp(string + len1 - len2, postfix);
89 }
90
91 static int opt_parse_track(const struct option *opt, const char *arg, int not)
92 {
93         struct string_list *list = opt->value;
94         if (not)
95                 string_list_clear(list, 0);
96         else
97                 string_list_append(list, arg);
98         return 0;
99 }
100
101 static int fetch_remote(const char *name)
102 {
103         const char *argv[] = { "fetch", name, NULL, NULL };
104         if (verbose) {
105                 argv[1] = "-v";
106                 argv[2] = name;
107         }
108         printf("Updating %s\n", name);
109         if (run_command_v_opt(argv, RUN_GIT_CMD))
110                 return error("Could not fetch %s", name);
111         return 0;
112 }
113
114 enum {
115         TAGS_UNSET = 0,
116         TAGS_DEFAULT = 1,
117         TAGS_SET = 2
118 };
119
120 #define MIRROR_NONE 0
121 #define MIRROR_FETCH 1
122 #define MIRROR_PUSH 2
123 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
124
125 static int add_branch(const char *key, const char *branchname,
126                 const char *remotename, int mirror, struct strbuf *tmp)
127 {
128         strbuf_reset(tmp);
129         strbuf_addch(tmp, '+');
130         if (mirror)
131                 strbuf_addf(tmp, "refs/%s:refs/%s",
132                                 branchname, branchname);
133         else
134                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
135                                 branchname, remotename, branchname);
136         return git_config_set_multivar(key, tmp->buf, "^$", 0);
137 }
138
139 static const char mirror_advice[] =
140 "--mirror is dangerous and deprecated; please\n"
141 "\t use --mirror=fetch or --mirror=push instead";
142
143 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
144 {
145         unsigned *mirror = opt->value;
146         if (not)
147                 *mirror = MIRROR_NONE;
148         else if (!arg) {
149                 warning("%s", mirror_advice);
150                 *mirror = MIRROR_BOTH;
151         }
152         else if (!strcmp(arg, "fetch"))
153                 *mirror = MIRROR_FETCH;
154         else if (!strcmp(arg, "push"))
155                 *mirror = MIRROR_PUSH;
156         else
157                 return error("unknown mirror argument: %s", arg);
158         return 0;
159 }
160
161 static int add(int argc, const char **argv)
162 {
163         int fetch = 0, fetch_tags = TAGS_DEFAULT;
164         unsigned mirror = MIRROR_NONE;
165         struct string_list track = STRING_LIST_INIT_NODUP;
166         const char *master = NULL;
167         struct remote *remote;
168         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
169         const char *name, *url;
170         int i;
171
172         struct option options[] = {
173                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
174                 OPT_SET_INT(0, "tags", &fetch_tags,
175                             "import all tags and associated objects when fetching",
176                             TAGS_SET),
177                 OPT_SET_INT(0, NULL, &fetch_tags,
178                             "or do not fetch any tag at all (--no-tags)", TAGS_UNSET),
179                 OPT_CALLBACK('t', "track", &track, "branch",
180                         "branch(es) to track", opt_parse_track),
181                 OPT_STRING('m', "master", &master, "branch", "master branch"),
182                 { OPTION_CALLBACK, 0, "mirror", &mirror, "push|fetch",
183                         "set up remote as a mirror to push to or fetch from",
184                         PARSE_OPT_OPTARG, parse_mirror_opt },
185                 OPT_END()
186         };
187
188         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
189                              0);
190
191         if (argc < 2)
192                 usage_with_options(builtin_remote_add_usage, options);
193
194         if (mirror && master)
195                 die("specifying a master branch makes no sense with --mirror");
196         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
197                 die("specifying branches to track makes sense only with fetch mirrors");
198
199         name = argv[0];
200         url = argv[1];
201
202         remote = remote_get(name);
203         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
204                         remote->fetch_refspec_nr))
205                 die("remote %s already exists.", name);
206
207         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
208         if (!valid_fetch_refspec(buf2.buf))
209                 die("'%s' is not a valid remote name", name);
210
211         strbuf_addf(&buf, "remote.%s.url", name);
212         if (git_config_set(buf.buf, url))
213                 return 1;
214
215         if (!mirror || mirror & MIRROR_FETCH) {
216                 strbuf_reset(&buf);
217                 strbuf_addf(&buf, "remote.%s.fetch", name);
218                 if (track.nr == 0)
219                         string_list_append(&track, "*");
220                 for (i = 0; i < track.nr; i++) {
221                         if (add_branch(buf.buf, track.items[i].string,
222                                        name, mirror, &buf2))
223                                 return 1;
224                 }
225         }
226
227         if (mirror & MIRROR_PUSH) {
228                 strbuf_reset(&buf);
229                 strbuf_addf(&buf, "remote.%s.mirror", name);
230                 if (git_config_set(buf.buf, "true"))
231                         return 1;
232         }
233
234         if (fetch_tags != TAGS_DEFAULT) {
235                 strbuf_reset(&buf);
236                 strbuf_addf(&buf, "remote.%s.tagopt", name);
237                 if (git_config_set(buf.buf,
238                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
239                         return 1;
240         }
241
242         if (fetch && fetch_remote(name))
243                 return 1;
244
245         if (master) {
246                 strbuf_reset(&buf);
247                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
248
249                 strbuf_reset(&buf2);
250                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
251
252                 if (create_symref(buf.buf, buf2.buf, "remote add"))
253                         return error("Could not setup master '%s'", master);
254         }
255
256         strbuf_release(&buf);
257         strbuf_release(&buf2);
258         string_list_clear(&track, 0);
259
260         return 0;
261 }
262
263 struct branch_info {
264         char *remote_name;
265         struct string_list merge;
266         int rebase;
267 };
268
269 static struct string_list branch_list;
270
271 static const char *abbrev_ref(const char *name, const char *prefix)
272 {
273         const char *abbrev = skip_prefix(name, prefix);
274         if (abbrev)
275                 return abbrev;
276         return name;
277 }
278 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
279
280 static int config_read_branches(const char *key, const char *value, void *cb)
281 {
282         if (!prefixcmp(key, "branch.")) {
283                 const char *orig_key = key;
284                 char *name;
285                 struct string_list_item *item;
286                 struct branch_info *info;
287                 enum { REMOTE, MERGE, REBASE } type;
288
289                 key += 7;
290                 if (!postfixcmp(key, ".remote")) {
291                         name = xstrndup(key, strlen(key) - 7);
292                         type = REMOTE;
293                 } else if (!postfixcmp(key, ".merge")) {
294                         name = xstrndup(key, strlen(key) - 6);
295                         type = MERGE;
296                 } else if (!postfixcmp(key, ".rebase")) {
297                         name = xstrndup(key, strlen(key) - 7);
298                         type = REBASE;
299                 } else
300                         return 0;
301
302                 item = string_list_insert(&branch_list, name);
303
304                 if (!item->util)
305                         item->util = xcalloc(sizeof(struct branch_info), 1);
306                 info = item->util;
307                 if (type == REMOTE) {
308                         if (info->remote_name)
309                                 warning("more than one %s", orig_key);
310                         info->remote_name = xstrdup(value);
311                 } else if (type == MERGE) {
312                         char *space = strchr(value, ' ');
313                         value = abbrev_branch(value);
314                         while (space) {
315                                 char *merge;
316                                 merge = xstrndup(value, space - value);
317                                 string_list_append(&info->merge, merge);
318                                 value = abbrev_branch(space + 1);
319                                 space = strchr(value, ' ');
320                         }
321                         string_list_append(&info->merge, xstrdup(value));
322                 } else
323                         info->rebase = git_config_bool(orig_key, value);
324         }
325         return 0;
326 }
327
328 static void read_branches(void)
329 {
330         if (branch_list.nr)
331                 return;
332         git_config(config_read_branches, NULL);
333 }
334
335 struct ref_states {
336         struct remote *remote;
337         struct string_list new, stale, tracked, heads, push;
338         int queried;
339 };
340
341 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
342 {
343         struct ref *fetch_map = NULL, **tail = &fetch_map;
344         struct ref *ref, *stale_refs;
345         int i;
346
347         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
348                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
349                         die("Could not get fetch map for refspec %s",
350                                 states->remote->fetch_refspec[i]);
351
352         states->new.strdup_strings = 1;
353         states->tracked.strdup_strings = 1;
354         states->stale.strdup_strings = 1;
355         for (ref = fetch_map; ref; ref = ref->next) {
356                 unsigned char sha1[20];
357                 if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
358                         string_list_append(&states->new, abbrev_branch(ref->name));
359                 else
360                         string_list_append(&states->tracked, abbrev_branch(ref->name));
361         }
362         stale_refs = get_stale_heads(states->remote, fetch_map);
363         for (ref = stale_refs; ref; ref = ref->next) {
364                 struct string_list_item *item =
365                         string_list_append(&states->stale, abbrev_branch(ref->name));
366                 item->util = xstrdup(ref->name);
367         }
368         free_refs(stale_refs);
369         free_refs(fetch_map);
370
371         sort_string_list(&states->new);
372         sort_string_list(&states->tracked);
373         sort_string_list(&states->stale);
374
375         return 0;
376 }
377
378 struct push_info {
379         char *dest;
380         int forced;
381         enum {
382                 PUSH_STATUS_CREATE = 0,
383                 PUSH_STATUS_DELETE,
384                 PUSH_STATUS_UPTODATE,
385                 PUSH_STATUS_FASTFORWARD,
386                 PUSH_STATUS_OUTOFDATE,
387                 PUSH_STATUS_NOTQUERIED
388         } status;
389 };
390
391 static int get_push_ref_states(const struct ref *remote_refs,
392         struct ref_states *states)
393 {
394         struct remote *remote = states->remote;
395         struct ref *ref, *local_refs, *push_map;
396         if (remote->mirror)
397                 return 0;
398
399         local_refs = get_local_heads();
400         push_map = copy_ref_list(remote_refs);
401
402         match_refs(local_refs, &push_map, remote->push_refspec_nr,
403                    remote->push_refspec, MATCH_REFS_NONE);
404
405         states->push.strdup_strings = 1;
406         for (ref = push_map; ref; ref = ref->next) {
407                 struct string_list_item *item;
408                 struct push_info *info;
409
410                 if (!ref->peer_ref)
411                         continue;
412                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
413
414                 item = string_list_append(&states->push,
415                                           abbrev_branch(ref->peer_ref->name));
416                 item->util = xcalloc(sizeof(struct push_info), 1);
417                 info = item->util;
418                 info->forced = ref->force;
419                 info->dest = xstrdup(abbrev_branch(ref->name));
420
421                 if (is_null_sha1(ref->new_sha1)) {
422                         info->status = PUSH_STATUS_DELETE;
423                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
424                         info->status = PUSH_STATUS_UPTODATE;
425                 else if (is_null_sha1(ref->old_sha1))
426                         info->status = PUSH_STATUS_CREATE;
427                 else if (has_sha1_file(ref->old_sha1) &&
428                          ref_newer(ref->new_sha1, ref->old_sha1))
429                         info->status = PUSH_STATUS_FASTFORWARD;
430                 else
431                         info->status = PUSH_STATUS_OUTOFDATE;
432         }
433         free_refs(local_refs);
434         free_refs(push_map);
435         return 0;
436 }
437
438 static int get_push_ref_states_noquery(struct ref_states *states)
439 {
440         int i;
441         struct remote *remote = states->remote;
442         struct string_list_item *item;
443         struct push_info *info;
444
445         if (remote->mirror)
446                 return 0;
447
448         states->push.strdup_strings = 1;
449         if (!remote->push_refspec_nr) {
450                 item = string_list_append(&states->push, "(matching)");
451                 info = item->util = xcalloc(sizeof(struct push_info), 1);
452                 info->status = PUSH_STATUS_NOTQUERIED;
453                 info->dest = xstrdup(item->string);
454         }
455         for (i = 0; i < remote->push_refspec_nr; i++) {
456                 struct refspec *spec = remote->push + i;
457                 if (spec->matching)
458                         item = string_list_append(&states->push, "(matching)");
459                 else if (strlen(spec->src))
460                         item = string_list_append(&states->push, spec->src);
461                 else
462                         item = string_list_append(&states->push, "(delete)");
463
464                 info = item->util = xcalloc(sizeof(struct push_info), 1);
465                 info->forced = spec->force;
466                 info->status = PUSH_STATUS_NOTQUERIED;
467                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
468         }
469         return 0;
470 }
471
472 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
473 {
474         struct ref *ref, *matches;
475         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
476         struct refspec refspec;
477
478         refspec.force = 0;
479         refspec.pattern = 1;
480         refspec.src = refspec.dst = "refs/heads/*";
481         states->heads.strdup_strings = 1;
482         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
483         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
484                                     fetch_map, 1);
485         for (ref = matches; ref; ref = ref->next)
486                 string_list_append(&states->heads, abbrev_branch(ref->name));
487
488         free_refs(fetch_map);
489         free_refs(matches);
490
491         return 0;
492 }
493
494 struct known_remote {
495         struct known_remote *next;
496         struct remote *remote;
497 };
498
499 struct known_remotes {
500         struct remote *to_delete;
501         struct known_remote *list;
502 };
503
504 static int add_known_remote(struct remote *remote, void *cb_data)
505 {
506         struct known_remotes *all = cb_data;
507         struct known_remote *r;
508
509         if (!strcmp(all->to_delete->name, remote->name))
510                 return 0;
511
512         r = xmalloc(sizeof(*r));
513         r->remote = remote;
514         r->next = all->list;
515         all->list = r;
516         return 0;
517 }
518
519 struct branches_for_remote {
520         struct remote *remote;
521         struct string_list *branches, *skipped;
522         struct known_remotes *keep;
523 };
524
525 static int add_branch_for_removal(const char *refname,
526         const unsigned char *sha1, int flags, void *cb_data)
527 {
528         struct branches_for_remote *branches = cb_data;
529         struct refspec refspec;
530         struct string_list_item *item;
531         struct known_remote *kr;
532
533         memset(&refspec, 0, sizeof(refspec));
534         refspec.dst = (char *)refname;
535         if (remote_find_tracking(branches->remote, &refspec))
536                 return 0;
537
538         /* don't delete a branch if another remote also uses it */
539         for (kr = branches->keep->list; kr; kr = kr->next) {
540                 memset(&refspec, 0, sizeof(refspec));
541                 refspec.dst = (char *)refname;
542                 if (!remote_find_tracking(kr->remote, &refspec))
543                         return 0;
544         }
545
546         /* don't delete non-remote-tracking refs */
547         if (prefixcmp(refname, "refs/remotes")) {
548                 /* advise user how to delete local branches */
549                 if (!prefixcmp(refname, "refs/heads/"))
550                         string_list_append(branches->skipped,
551                                            abbrev_branch(refname));
552                 /* silently skip over other non-remote refs */
553                 return 0;
554         }
555
556         /* make sure that symrefs are deleted */
557         if (flags & REF_ISSYMREF)
558                 return unlink(git_path("%s", refname));
559
560         item = string_list_append(branches->branches, refname);
561         item->util = xmalloc(20);
562         hashcpy(item->util, sha1);
563
564         return 0;
565 }
566
567 struct rename_info {
568         const char *old;
569         const char *new;
570         struct string_list *remote_branches;
571 };
572
573 static int read_remote_branches(const char *refname,
574         const unsigned char *sha1, int flags, void *cb_data)
575 {
576         struct rename_info *rename = cb_data;
577         struct strbuf buf = STRBUF_INIT;
578         struct string_list_item *item;
579         int flag;
580         unsigned char orig_sha1[20];
581         const char *symref;
582
583         strbuf_addf(&buf, "refs/remotes/%s", rename->old);
584         if (!prefixcmp(refname, buf.buf)) {
585                 item = string_list_append(rename->remote_branches, xstrdup(refname));
586                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
587                 if (flag & REF_ISSYMREF)
588                         item->util = xstrdup(symref);
589                 else
590                         item->util = NULL;
591         }
592
593         return 0;
594 }
595
596 static int migrate_file(struct remote *remote)
597 {
598         struct strbuf buf = STRBUF_INIT;
599         int i;
600         char *path = NULL;
601
602         strbuf_addf(&buf, "remote.%s.url", remote->name);
603         for (i = 0; i < remote->url_nr; i++)
604                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
605                         return error("Could not append '%s' to '%s'",
606                                         remote->url[i], buf.buf);
607         strbuf_reset(&buf);
608         strbuf_addf(&buf, "remote.%s.push", remote->name);
609         for (i = 0; i < remote->push_refspec_nr; i++)
610                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
611                         return error("Could not append '%s' to '%s'",
612                                         remote->push_refspec[i], buf.buf);
613         strbuf_reset(&buf);
614         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
615         for (i = 0; i < remote->fetch_refspec_nr; i++)
616                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
617                         return error("Could not append '%s' to '%s'",
618                                         remote->fetch_refspec[i], buf.buf);
619         if (remote->origin == REMOTE_REMOTES)
620                 path = git_path("remotes/%s", remote->name);
621         else if (remote->origin == REMOTE_BRANCHES)
622                 path = git_path("branches/%s", remote->name);
623         if (path)
624                 unlink_or_warn(path);
625         return 0;
626 }
627
628 static int mv(int argc, const char **argv)
629 {
630         struct option options[] = {
631                 OPT_END()
632         };
633         struct remote *oldremote, *newremote;
634         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
635         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
636         struct rename_info rename;
637         int i;
638
639         if (argc != 3)
640                 usage_with_options(builtin_remote_rename_usage, options);
641
642         rename.old = argv[1];
643         rename.new = argv[2];
644         rename.remote_branches = &remote_branches;
645
646         oldremote = remote_get(rename.old);
647         if (!oldremote)
648                 die("No such remote: %s", rename.old);
649
650         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
651                 return migrate_file(oldremote);
652
653         newremote = remote_get(rename.new);
654         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
655                 die("remote %s already exists.", rename.new);
656
657         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
658         if (!valid_fetch_refspec(buf.buf))
659                 die("'%s' is not a valid remote name", rename.new);
660
661         strbuf_reset(&buf);
662         strbuf_addf(&buf, "remote.%s", rename.old);
663         strbuf_addf(&buf2, "remote.%s", rename.new);
664         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
665                 return error("Could not rename config section '%s' to '%s'",
666                                 buf.buf, buf2.buf);
667
668         strbuf_reset(&buf);
669         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
670         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
671                 return error("Could not remove config section '%s'", buf.buf);
672         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
673                 char *ptr;
674
675                 strbuf_reset(&buf2);
676                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
677                 ptr = strstr(buf2.buf, rename.old);
678                 if (ptr)
679                         strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
680                                         rename.new, strlen(rename.new));
681                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
682                         return error("Could not append '%s'", buf.buf);
683         }
684
685         read_branches();
686         for (i = 0; i < branch_list.nr; i++) {
687                 struct string_list_item *item = branch_list.items + i;
688                 struct branch_info *info = item->util;
689                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
690                         strbuf_reset(&buf);
691                         strbuf_addf(&buf, "branch.%s.remote", item->string);
692                         if (git_config_set(buf.buf, rename.new)) {
693                                 return error("Could not set '%s'", buf.buf);
694                         }
695                 }
696         }
697
698         /*
699          * First remove symrefs, then rename the rest, finally create
700          * the new symrefs.
701          */
702         for_each_ref(read_remote_branches, &rename);
703         for (i = 0; i < remote_branches.nr; i++) {
704                 struct string_list_item *item = remote_branches.items + i;
705                 int flag = 0;
706                 unsigned char sha1[20];
707
708                 resolve_ref(item->string, sha1, 1, &flag);
709                 if (!(flag & REF_ISSYMREF))
710                         continue;
711                 if (delete_ref(item->string, NULL, REF_NODEREF))
712                         die("deleting '%s' failed", item->string);
713         }
714         for (i = 0; i < remote_branches.nr; i++) {
715                 struct string_list_item *item = remote_branches.items + i;
716
717                 if (item->util)
718                         continue;
719                 strbuf_reset(&buf);
720                 strbuf_addstr(&buf, item->string);
721                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
722                                 rename.new, strlen(rename.new));
723                 strbuf_reset(&buf2);
724                 strbuf_addf(&buf2, "remote: renamed %s to %s",
725                                 item->string, buf.buf);
726                 if (rename_ref(item->string, buf.buf, buf2.buf))
727                         die("renaming '%s' failed", item->string);
728         }
729         for (i = 0; i < remote_branches.nr; i++) {
730                 struct string_list_item *item = remote_branches.items + i;
731
732                 if (!item->util)
733                         continue;
734                 strbuf_reset(&buf);
735                 strbuf_addstr(&buf, item->string);
736                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
737                                 rename.new, strlen(rename.new));
738                 strbuf_reset(&buf2);
739                 strbuf_addstr(&buf2, item->util);
740                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
741                                 rename.new, strlen(rename.new));
742                 strbuf_reset(&buf3);
743                 strbuf_addf(&buf3, "remote: renamed %s to %s",
744                                 item->string, buf.buf);
745                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
746                         die("creating '%s' failed", buf.buf);
747         }
748         return 0;
749 }
750
751 static int remove_branches(struct string_list *branches)
752 {
753         int i, result = 0;
754         for (i = 0; i < branches->nr; i++) {
755                 struct string_list_item *item = branches->items + i;
756                 const char *refname = item->string;
757                 unsigned char *sha1 = item->util;
758
759                 if (delete_ref(refname, sha1, 0))
760                         result |= error("Could not remove branch %s", refname);
761         }
762         return result;
763 }
764
765 static int rm(int argc, const char **argv)
766 {
767         struct option options[] = {
768                 OPT_END()
769         };
770         struct remote *remote;
771         struct strbuf buf = STRBUF_INIT;
772         struct known_remotes known_remotes = { NULL, NULL };
773         struct string_list branches = STRING_LIST_INIT_DUP;
774         struct string_list skipped = STRING_LIST_INIT_DUP;
775         struct branches_for_remote cb_data;
776         int i, result;
777
778         memset(&cb_data, 0, sizeof(cb_data));
779         cb_data.branches = &branches;
780         cb_data.skipped = &skipped;
781         cb_data.keep = &known_remotes;
782
783         if (argc != 2)
784                 usage_with_options(builtin_remote_rm_usage, options);
785
786         remote = remote_get(argv[1]);
787         if (!remote)
788                 die("No such remote: %s", argv[1]);
789
790         known_remotes.to_delete = remote;
791         for_each_remote(add_known_remote, &known_remotes);
792
793         strbuf_addf(&buf, "remote.%s", remote->name);
794         if (git_config_rename_section(buf.buf, NULL) < 1)
795                 return error("Could not remove config section '%s'", buf.buf);
796
797         read_branches();
798         for (i = 0; i < branch_list.nr; i++) {
799                 struct string_list_item *item = branch_list.items + i;
800                 struct branch_info *info = item->util;
801                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
802                         const char *keys[] = { "remote", "merge", NULL }, **k;
803                         for (k = keys; *k; k++) {
804                                 strbuf_reset(&buf);
805                                 strbuf_addf(&buf, "branch.%s.%s",
806                                                 item->string, *k);
807                                 if (git_config_set(buf.buf, NULL)) {
808                                         strbuf_release(&buf);
809                                         return -1;
810                                 }
811                         }
812                 }
813         }
814
815         /*
816          * We cannot just pass a function to for_each_ref() which deletes
817          * the branches one by one, since for_each_ref() relies on cached
818          * refs, which are invalidated when deleting a branch.
819          */
820         cb_data.remote = remote;
821         result = for_each_ref(add_branch_for_removal, &cb_data);
822         strbuf_release(&buf);
823
824         if (!result)
825                 result = remove_branches(&branches);
826         string_list_clear(&branches, 1);
827
828         if (skipped.nr) {
829                 fprintf(stderr, skipped.nr == 1 ?
830                         "Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
831                         "to delete it, use:\n" :
832                         "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
833                         "to delete them, use:\n");
834                 for (i = 0; i < skipped.nr; i++)
835                         fprintf(stderr, "  git branch -d %s\n",
836                                 skipped.items[i].string);
837         }
838         string_list_clear(&skipped, 0);
839
840         return result;
841 }
842
843 static void clear_push_info(void *util, const char *string)
844 {
845         struct push_info *info = util;
846         free(info->dest);
847         free(info);
848 }
849
850 static void free_remote_ref_states(struct ref_states *states)
851 {
852         string_list_clear(&states->new, 0);
853         string_list_clear(&states->stale, 1);
854         string_list_clear(&states->tracked, 0);
855         string_list_clear(&states->heads, 0);
856         string_list_clear_func(&states->push, clear_push_info);
857 }
858
859 static int append_ref_to_tracked_list(const char *refname,
860         const unsigned char *sha1, int flags, void *cb_data)
861 {
862         struct ref_states *states = cb_data;
863         struct refspec refspec;
864
865         if (flags & REF_ISSYMREF)
866                 return 0;
867
868         memset(&refspec, 0, sizeof(refspec));
869         refspec.dst = (char *)refname;
870         if (!remote_find_tracking(states->remote, &refspec))
871                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
872
873         return 0;
874 }
875
876 static int get_remote_ref_states(const char *name,
877                                  struct ref_states *states,
878                                  int query)
879 {
880         struct transport *transport;
881         const struct ref *remote_refs;
882
883         states->remote = remote_get(name);
884         if (!states->remote)
885                 return error("No such remote: %s", name);
886
887         read_branches();
888
889         if (query) {
890                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
891                         states->remote->url[0] : NULL);
892                 remote_refs = transport_get_remote_refs(transport);
893                 transport_disconnect(transport);
894
895                 states->queried = 1;
896                 if (query & GET_REF_STATES)
897                         get_ref_states(remote_refs, states);
898                 if (query & GET_HEAD_NAMES)
899                         get_head_names(remote_refs, states);
900                 if (query & GET_PUSH_REF_STATES)
901                         get_push_ref_states(remote_refs, states);
902         } else {
903                 for_each_ref(append_ref_to_tracked_list, states);
904                 sort_string_list(&states->tracked);
905                 get_push_ref_states_noquery(states);
906         }
907
908         return 0;
909 }
910
911 struct show_info {
912         struct string_list *list;
913         struct ref_states *states;
914         int width, width2;
915         int any_rebase;
916 };
917
918 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
919 {
920         struct show_info *info = cb_data;
921         int n = strlen(item->string);
922         if (n > info->width)
923                 info->width = n;
924         string_list_insert(info->list, item->string);
925         return 0;
926 }
927
928 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
929 {
930         struct show_info *info = cb_data;
931         struct ref_states *states = info->states;
932         const char *name = item->string;
933
934         if (states->queried) {
935                 const char *fmt = "%s";
936                 const char *arg = "";
937                 if (string_list_has_string(&states->new, name)) {
938                         fmt = " new (next fetch will store in remotes/%s)";
939                         arg = states->remote->name;
940                 } else if (string_list_has_string(&states->tracked, name))
941                         arg = " tracked";
942                 else if (string_list_has_string(&states->stale, name))
943                         arg = " stale (use 'git remote prune' to remove)";
944                 else
945                         arg = " ???";
946                 printf("    %-*s", info->width, name);
947                 printf(fmt, arg);
948                 printf("\n");
949         } else
950                 printf("    %s\n", name);
951
952         return 0;
953 }
954
955 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
956 {
957         struct show_info *show_info = cb_data;
958         struct ref_states *states = show_info->states;
959         struct branch_info *branch_info = branch_item->util;
960         struct string_list_item *item;
961         int n;
962
963         if (!branch_info->merge.nr || !branch_info->remote_name ||
964             strcmp(states->remote->name, branch_info->remote_name))
965                 return 0;
966         if ((n = strlen(branch_item->string)) > show_info->width)
967                 show_info->width = n;
968         if (branch_info->rebase)
969                 show_info->any_rebase = 1;
970
971         item = string_list_insert(show_info->list, branch_item->string);
972         item->util = branch_info;
973
974         return 0;
975 }
976
977 static int show_local_info_item(struct string_list_item *item, void *cb_data)
978 {
979         struct show_info *show_info = cb_data;
980         struct branch_info *branch_info = item->util;
981         struct string_list *merge = &branch_info->merge;
982         const char *also;
983         int i;
984
985         if (branch_info->rebase && branch_info->merge.nr > 1) {
986                 error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
987                         item->string);
988                 return 0;
989         }
990
991         printf("    %-*s ", show_info->width, item->string);
992         if (branch_info->rebase) {
993                 printf("rebases onto remote %s\n", merge->items[0].string);
994                 return 0;
995         } else if (show_info->any_rebase) {
996                 printf(" merges with remote %s\n", merge->items[0].string);
997                 also = "    and with remote";
998         } else {
999                 printf("merges with remote %s\n", merge->items[0].string);
1000                 also = "   and with remote";
1001         }
1002         for (i = 1; i < merge->nr; i++)
1003                 printf("    %-*s %s %s\n", show_info->width, "", also,
1004                        merge->items[i].string);
1005
1006         return 0;
1007 }
1008
1009 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1010 {
1011         struct show_info *show_info = cb_data;
1012         struct push_info *push_info = push_item->util;
1013         struct string_list_item *item;
1014         int n;
1015         if ((n = strlen(push_item->string)) > show_info->width)
1016                 show_info->width = n;
1017         if ((n = strlen(push_info->dest)) > show_info->width2)
1018                 show_info->width2 = n;
1019         item = string_list_append(show_info->list, push_item->string);
1020         item->util = push_item->util;
1021         return 0;
1022 }
1023
1024 /*
1025  * Sorting comparison for a string list that has push_info
1026  * structs in its util field
1027  */
1028 static int cmp_string_with_push(const void *va, const void *vb)
1029 {
1030         const struct string_list_item *a = va;
1031         const struct string_list_item *b = vb;
1032         const struct push_info *a_push = a->util;
1033         const struct push_info *b_push = b->util;
1034         int cmp = strcmp(a->string, b->string);
1035         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1036 }
1037
1038 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1039 {
1040         struct show_info *show_info = cb_data;
1041         struct push_info *push_info = item->util;
1042         char *src = item->string, *status = NULL;
1043
1044         switch (push_info->status) {
1045         case PUSH_STATUS_CREATE:
1046                 status = "create";
1047                 break;
1048         case PUSH_STATUS_DELETE:
1049                 status = "delete";
1050                 src = "(none)";
1051                 break;
1052         case PUSH_STATUS_UPTODATE:
1053                 status = "up to date";
1054                 break;
1055         case PUSH_STATUS_FASTFORWARD:
1056                 status = "fast-forwardable";
1057                 break;
1058         case PUSH_STATUS_OUTOFDATE:
1059                 status = "local out of date";
1060                 break;
1061         case PUSH_STATUS_NOTQUERIED:
1062                 break;
1063         }
1064         if (status)
1065                 printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
1066                         push_info->forced ? "forces" : "pushes",
1067                         show_info->width2, push_info->dest, status);
1068         else
1069                 printf("    %-*s %s to %s\n", show_info->width, src,
1070                         push_info->forced ? "forces" : "pushes",
1071                         push_info->dest);
1072         return 0;
1073 }
1074
1075 static int show(int argc, const char **argv)
1076 {
1077         int no_query = 0, result = 0, query_flag = 0;
1078         struct option options[] = {
1079                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
1080                 OPT_END()
1081         };
1082         struct ref_states states;
1083         struct string_list info_list = STRING_LIST_INIT_NODUP;
1084         struct show_info info;
1085
1086         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1087                              0);
1088
1089         if (argc < 1)
1090                 return show_all();
1091
1092         if (!no_query)
1093                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1094
1095         memset(&states, 0, sizeof(states));
1096         memset(&info, 0, sizeof(info));
1097         info.states = &states;
1098         info.list = &info_list;
1099         for (; argc; argc--, argv++) {
1100                 int i;
1101                 const char **url;
1102                 int url_nr;
1103
1104                 get_remote_ref_states(*argv, &states, query_flag);
1105
1106                 printf("* remote %s\n", *argv);
1107                 printf("  Fetch URL: %s\n", states.remote->url_nr > 0 ?
1108                         states.remote->url[0] : "(no URL)");
1109                 if (states.remote->pushurl_nr) {
1110                         url = states.remote->pushurl;
1111                         url_nr = states.remote->pushurl_nr;
1112                 } else {
1113                         url = states.remote->url;
1114                         url_nr = states.remote->url_nr;
1115                 }
1116                 for (i = 0; i < url_nr; i++)
1117                         printf("  Push  URL: %s\n", url[i]);
1118                 if (!i)
1119                         printf("  Push  URL: %s\n", "(no URL)");
1120                 if (no_query)
1121                         printf("  HEAD branch: (not queried)\n");
1122                 else if (!states.heads.nr)
1123                         printf("  HEAD branch: (unknown)\n");
1124                 else if (states.heads.nr == 1)
1125                         printf("  HEAD branch: %s\n", states.heads.items[0].string);
1126                 else {
1127                         printf("  HEAD branch (remote HEAD is ambiguous,"
1128                                " may be one of the following):\n");
1129                         for (i = 0; i < states.heads.nr; i++)
1130                                 printf("    %s\n", states.heads.items[i].string);
1131                 }
1132
1133                 /* remote branch info */
1134                 info.width = 0;
1135                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1136                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1137                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1138                 if (info.list->nr)
1139                         printf("  Remote branch%s:%s\n",
1140                                info.list->nr > 1 ? "es" : "",
1141                                 no_query ? " (status not queried)" : "");
1142                 for_each_string_list(info.list, show_remote_info_item, &info);
1143                 string_list_clear(info.list, 0);
1144
1145                 /* git pull info */
1146                 info.width = 0;
1147                 info.any_rebase = 0;
1148                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1149                 if (info.list->nr)
1150                         printf("  Local branch%s configured for 'git pull':\n",
1151                                info.list->nr > 1 ? "es" : "");
1152                 for_each_string_list(info.list, show_local_info_item, &info);
1153                 string_list_clear(info.list, 0);
1154
1155                 /* git push info */
1156                 if (states.remote->mirror)
1157                         printf("  Local refs will be mirrored by 'git push'\n");
1158
1159                 info.width = info.width2 = 0;
1160                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1161                 qsort(info.list->items, info.list->nr,
1162                         sizeof(*info.list->items), cmp_string_with_push);
1163                 if (info.list->nr)
1164                         printf("  Local ref%s configured for 'git push'%s:\n",
1165                                 info.list->nr > 1 ? "s" : "",
1166                                 no_query ? " (status not queried)" : "");
1167                 for_each_string_list(info.list, show_push_info_item, &info);
1168                 string_list_clear(info.list, 0);
1169
1170                 free_remote_ref_states(&states);
1171         }
1172
1173         return result;
1174 }
1175
1176 static int set_head(int argc, const char **argv)
1177 {
1178         int i, opt_a = 0, opt_d = 0, result = 0;
1179         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1180         char *head_name = NULL;
1181
1182         struct option options[] = {
1183                 OPT_BOOLEAN('a', "auto", &opt_a,
1184                             "set refs/remotes/<name>/HEAD according to remote"),
1185                 OPT_BOOLEAN('d', "delete", &opt_d,
1186                             "delete refs/remotes/<name>/HEAD"),
1187                 OPT_END()
1188         };
1189         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1190                              0);
1191         if (argc)
1192                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1193
1194         if (!opt_a && !opt_d && argc == 2) {
1195                 head_name = xstrdup(argv[1]);
1196         } else if (opt_a && !opt_d && argc == 1) {
1197                 struct ref_states states;
1198                 memset(&states, 0, sizeof(states));
1199                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1200                 if (!states.heads.nr)
1201                         result |= error("Cannot determine remote HEAD");
1202                 else if (states.heads.nr > 1) {
1203                         result |= error("Multiple remote HEAD branches. "
1204                                         "Please choose one explicitly with:");
1205                         for (i = 0; i < states.heads.nr; i++)
1206                                 fprintf(stderr, "  git remote set-head %s %s\n",
1207                                         argv[0], states.heads.items[i].string);
1208                 } else
1209                         head_name = xstrdup(states.heads.items[0].string);
1210                 free_remote_ref_states(&states);
1211         } else if (opt_d && !opt_a && argc == 1) {
1212                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1213                         result |= error("Could not delete %s", buf.buf);
1214         } else
1215                 usage_with_options(builtin_remote_sethead_usage, options);
1216
1217         if (head_name) {
1218                 unsigned char sha1[20];
1219                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1220                 /* make sure it's valid */
1221                 if (!resolve_ref(buf2.buf, sha1, 1, NULL))
1222                         result |= error("Not a valid ref: %s", buf2.buf);
1223                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1224                         result |= error("Could not setup %s", buf.buf);
1225                 if (opt_a)
1226                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1227                 free(head_name);
1228         }
1229
1230         strbuf_release(&buf);
1231         strbuf_release(&buf2);
1232         return result;
1233 }
1234
1235 static int prune(int argc, const char **argv)
1236 {
1237         int dry_run = 0, result = 0;
1238         struct option options[] = {
1239                 OPT__DRY_RUN(&dry_run, "dry run"),
1240                 OPT_END()
1241         };
1242
1243         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1244                              0);
1245
1246         if (argc < 1)
1247                 usage_with_options(builtin_remote_prune_usage, options);
1248
1249         for (; argc; argc--, argv++)
1250                 result |= prune_remote(*argv, dry_run);
1251
1252         return result;
1253 }
1254
1255 static int prune_remote(const char *remote, int dry_run)
1256 {
1257         int result = 0, i;
1258         struct ref_states states;
1259         const char *dangling_msg = dry_run
1260                 ? " %s will become dangling!\n"
1261                 : " %s has become dangling!\n";
1262
1263         memset(&states, 0, sizeof(states));
1264         get_remote_ref_states(remote, &states, GET_REF_STATES);
1265
1266         if (states.stale.nr) {
1267                 printf("Pruning %s\n", remote);
1268                 printf("URL: %s\n",
1269                        states.remote->url_nr
1270                        ? states.remote->url[0]
1271                        : "(no URL)");
1272         }
1273
1274         for (i = 0; i < states.stale.nr; i++) {
1275                 const char *refname = states.stale.items[i].util;
1276
1277                 if (!dry_run)
1278                         result |= delete_ref(refname, NULL, 0);
1279
1280                 printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1281                        abbrev_ref(refname, "refs/remotes/"));
1282                 warn_dangling_symref(stdout, dangling_msg, refname);
1283         }
1284
1285         free_remote_ref_states(&states);
1286         return result;
1287 }
1288
1289 static int get_remote_default(const char *key, const char *value, void *priv)
1290 {
1291         if (strcmp(key, "remotes.default") == 0) {
1292                 int *found = priv;
1293                 *found = 1;
1294         }
1295         return 0;
1296 }
1297
1298 static int update(int argc, const char **argv)
1299 {
1300         int i, prune = 0;
1301         struct option options[] = {
1302                 OPT_BOOLEAN('p', "prune", &prune,
1303                             "prune remotes after fetching"),
1304                 OPT_END()
1305         };
1306         const char **fetch_argv;
1307         int fetch_argc = 0;
1308         int default_defined = 0;
1309
1310         fetch_argv = xmalloc(sizeof(char *) * (argc+5));
1311
1312         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1313                              PARSE_OPT_KEEP_ARGV0);
1314
1315         fetch_argv[fetch_argc++] = "fetch";
1316
1317         if (prune)
1318                 fetch_argv[fetch_argc++] = "--prune";
1319         if (verbose)
1320                 fetch_argv[fetch_argc++] = "-v";
1321         fetch_argv[fetch_argc++] = "--multiple";
1322         if (argc < 2)
1323                 fetch_argv[fetch_argc++] = "default";
1324         for (i = 1; i < argc; i++)
1325                 fetch_argv[fetch_argc++] = argv[i];
1326
1327         if (strcmp(fetch_argv[fetch_argc-1], "default") == 0) {
1328                 git_config(get_remote_default, &default_defined);
1329                 if (!default_defined)
1330                         fetch_argv[fetch_argc-1] = "--all";
1331         }
1332
1333         fetch_argv[fetch_argc] = NULL;
1334
1335         return run_command_v_opt(fetch_argv, RUN_GIT_CMD);
1336 }
1337
1338 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1339 {
1340         return git_config_set_multivar(key, NULL, NULL, 1);
1341 }
1342
1343 static int add_branches(struct remote *remote, const char **branches,
1344                         const char *key)
1345 {
1346         const char *remotename = remote->name;
1347         int mirror = remote->mirror;
1348         struct strbuf refspec = STRBUF_INIT;
1349
1350         for (; *branches; branches++)
1351                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1352                         strbuf_release(&refspec);
1353                         return 1;
1354                 }
1355
1356         strbuf_release(&refspec);
1357         return 0;
1358 }
1359
1360 static int set_remote_branches(const char *remotename, const char **branches,
1361                                 int add_mode)
1362 {
1363         struct strbuf key = STRBUF_INIT;
1364         struct remote *remote;
1365
1366         strbuf_addf(&key, "remote.%s.fetch", remotename);
1367
1368         if (!remote_is_configured(remotename))
1369                 die("No such remote '%s'", remotename);
1370         remote = remote_get(remotename);
1371
1372         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1373                 strbuf_release(&key);
1374                 return 1;
1375         }
1376         if (add_branches(remote, branches, key.buf)) {
1377                 strbuf_release(&key);
1378                 return 1;
1379         }
1380
1381         strbuf_release(&key);
1382         return 0;
1383 }
1384
1385 static int set_branches(int argc, const char **argv)
1386 {
1387         int add_mode = 0;
1388         struct option options[] = {
1389                 OPT_BOOLEAN('\0', "add", &add_mode, "add branch"),
1390                 OPT_END()
1391         };
1392
1393         argc = parse_options(argc, argv, NULL, options,
1394                              builtin_remote_setbranches_usage, 0);
1395         if (argc == 0) {
1396                 error("no remote specified");
1397                 usage_with_options(builtin_remote_seturl_usage, options);
1398         }
1399         argv[argc] = NULL;
1400
1401         return set_remote_branches(argv[0], argv + 1, add_mode);
1402 }
1403
1404 static int set_url(int argc, const char **argv)
1405 {
1406         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1407         int matches = 0, negative_matches = 0;
1408         const char *remotename = NULL;
1409         const char *newurl = NULL;
1410         const char *oldurl = NULL;
1411         struct remote *remote;
1412         regex_t old_regex;
1413         const char **urlset;
1414         int urlset_nr;
1415         struct strbuf name_buf = STRBUF_INIT;
1416         struct option options[] = {
1417                 OPT_BOOLEAN('\0', "push", &push_mode,
1418                             "manipulate push URLs"),
1419                 OPT_BOOLEAN('\0', "add", &add_mode,
1420                             "add URL"),
1421                 OPT_BOOLEAN('\0', "delete", &delete_mode,
1422                             "delete URLs"),
1423                 OPT_END()
1424         };
1425         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1426                              PARSE_OPT_KEEP_ARGV0);
1427
1428         if (add_mode && delete_mode)
1429                 die("--add --delete doesn't make sense");
1430
1431         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1432                 usage_with_options(builtin_remote_seturl_usage, options);
1433
1434         remotename = argv[1];
1435         newurl = argv[2];
1436         if (argc > 3)
1437                 oldurl = argv[3];
1438
1439         if (delete_mode)
1440                 oldurl = newurl;
1441
1442         if (!remote_is_configured(remotename))
1443                 die("No such remote '%s'", remotename);
1444         remote = remote_get(remotename);
1445
1446         if (push_mode) {
1447                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1448                 urlset = remote->pushurl;
1449                 urlset_nr = remote->pushurl_nr;
1450         } else {
1451                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1452                 urlset = remote->url;
1453                 urlset_nr = remote->url_nr;
1454         }
1455
1456         /* Special cases that add new entry. */
1457         if ((!oldurl && !delete_mode) || add_mode) {
1458                 if (add_mode)
1459                         git_config_set_multivar(name_buf.buf, newurl,
1460                                 "^$", 0);
1461                 else
1462                         git_config_set(name_buf.buf, newurl);
1463                 strbuf_release(&name_buf);
1464                 return 0;
1465         }
1466
1467         /* Old URL specified. Demand that one matches. */
1468         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1469                 die("Invalid old URL pattern: %s", oldurl);
1470
1471         for (i = 0; i < urlset_nr; i++)
1472                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1473                         matches++;
1474                 else
1475                         negative_matches++;
1476         if (!delete_mode && !matches)
1477                 die("No such URL found: %s", oldurl);
1478         if (delete_mode && !negative_matches && !push_mode)
1479                 die("Will not delete all non-push URLs");
1480
1481         regfree(&old_regex);
1482
1483         if (!delete_mode)
1484                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1485         else
1486                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1487         return 0;
1488 }
1489
1490 static int get_one_entry(struct remote *remote, void *priv)
1491 {
1492         struct string_list *list = priv;
1493         struct strbuf url_buf = STRBUF_INIT;
1494         const char **url;
1495         int i, url_nr;
1496
1497         if (remote->url_nr > 0) {
1498                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1499                 string_list_append(list, remote->name)->util =
1500                                 strbuf_detach(&url_buf, NULL);
1501         } else
1502                 string_list_append(list, remote->name)->util = NULL;
1503         if (remote->pushurl_nr) {
1504                 url = remote->pushurl;
1505                 url_nr = remote->pushurl_nr;
1506         } else {
1507                 url = remote->url;
1508                 url_nr = remote->url_nr;
1509         }
1510         for (i = 0; i < url_nr; i++)
1511         {
1512                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1513                 string_list_append(list, remote->name)->util =
1514                                 strbuf_detach(&url_buf, NULL);
1515         }
1516
1517         return 0;
1518 }
1519
1520 static int show_all(void)
1521 {
1522         struct string_list list = STRING_LIST_INIT_NODUP;
1523         int result;
1524
1525         list.strdup_strings = 1;
1526         result = for_each_remote(get_one_entry, &list);
1527
1528         if (!result) {
1529                 int i;
1530
1531                 sort_string_list(&list);
1532                 for (i = 0; i < list.nr; i++) {
1533                         struct string_list_item *item = list.items + i;
1534                         if (verbose)
1535                                 printf("%s\t%s\n", item->string,
1536                                         item->util ? (const char *)item->util : "");
1537                         else {
1538                                 if (i && !strcmp((item - 1)->string, item->string))
1539                                         continue;
1540                                 printf("%s\n", item->string);
1541                         }
1542                 }
1543         }
1544         string_list_clear(&list, 1);
1545         return result;
1546 }
1547
1548 int cmd_remote(int argc, const char **argv, const char *prefix)
1549 {
1550         struct option options[] = {
1551                 OPT__VERBOSE(&verbose, "be verbose; must be placed before a subcommand"),
1552                 OPT_END()
1553         };
1554         int result;
1555
1556         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1557                 PARSE_OPT_STOP_AT_NON_OPTION);
1558
1559         if (argc < 1)
1560                 result = show_all();
1561         else if (!strcmp(argv[0], "add"))
1562                 result = add(argc, argv);
1563         else if (!strcmp(argv[0], "rename"))
1564                 result = mv(argc, argv);
1565         else if (!strcmp(argv[0], "rm"))
1566                 result = rm(argc, argv);
1567         else if (!strcmp(argv[0], "set-head"))
1568                 result = set_head(argc, argv);
1569         else if (!strcmp(argv[0], "set-branches"))
1570                 result = set_branches(argc, argv);
1571         else if (!strcmp(argv[0], "set-url"))
1572                 result = set_url(argc, argv);
1573         else if (!strcmp(argv[0], "show"))
1574                 result = show(argc, argv);
1575         else if (!strcmp(argv[0], "prune"))
1576                 result = prune(argc, argv);
1577         else if (!strcmp(argv[0], "update"))
1578                 result = update(argc, argv);
1579         else {
1580                 error("Unknown subcommand: %s", argv[0]);
1581                 usage_with_options(builtin_remote_usage, options);
1582         }
1583
1584         return result ? 1 : 0;
1585 }