Merge branch 'na/strtoimax'
[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 fetch_remote(const char *name)
92 {
93         const char *argv[] = { "fetch", name, NULL, NULL };
94         if (verbose) {
95                 argv[1] = "-v";
96                 argv[2] = name;
97         }
98         printf("Updating %s\n", name);
99         if (run_command_v_opt(argv, RUN_GIT_CMD))
100                 return error("Could not fetch %s", name);
101         return 0;
102 }
103
104 enum {
105         TAGS_UNSET = 0,
106         TAGS_DEFAULT = 1,
107         TAGS_SET = 2
108 };
109
110 #define MIRROR_NONE 0
111 #define MIRROR_FETCH 1
112 #define MIRROR_PUSH 2
113 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
114
115 static int add_branch(const char *key, const char *branchname,
116                 const char *remotename, int mirror, struct strbuf *tmp)
117 {
118         strbuf_reset(tmp);
119         strbuf_addch(tmp, '+');
120         if (mirror)
121                 strbuf_addf(tmp, "refs/%s:refs/%s",
122                                 branchname, branchname);
123         else
124                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
125                                 branchname, remotename, branchname);
126         return git_config_set_multivar(key, tmp->buf, "^$", 0);
127 }
128
129 static const char mirror_advice[] =
130 "--mirror is dangerous and deprecated; please\n"
131 "\t use --mirror=fetch or --mirror=push instead";
132
133 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
134 {
135         unsigned *mirror = opt->value;
136         if (not)
137                 *mirror = MIRROR_NONE;
138         else if (!arg) {
139                 warning("%s", mirror_advice);
140                 *mirror = MIRROR_BOTH;
141         }
142         else if (!strcmp(arg, "fetch"))
143                 *mirror = MIRROR_FETCH;
144         else if (!strcmp(arg, "push"))
145                 *mirror = MIRROR_PUSH;
146         else
147                 return error("unknown mirror argument: %s", arg);
148         return 0;
149 }
150
151 static int add(int argc, const char **argv)
152 {
153         int fetch = 0, fetch_tags = TAGS_DEFAULT;
154         unsigned mirror = MIRROR_NONE;
155         struct string_list track = STRING_LIST_INIT_NODUP;
156         const char *master = NULL;
157         struct remote *remote;
158         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
159         const char *name, *url;
160         int i;
161
162         struct option options[] = {
163                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
164                 OPT_SET_INT(0, "tags", &fetch_tags,
165                             "import all tags and associated objects when fetching",
166                             TAGS_SET),
167                 OPT_SET_INT(0, NULL, &fetch_tags,
168                             "or do not fetch any tag at all (--no-tags)", TAGS_UNSET),
169                 OPT_STRING_LIST('t', "track", &track, "branch",
170                                 "branch(es) to track"),
171                 OPT_STRING('m', "master", &master, "branch", "master branch"),
172                 { OPTION_CALLBACK, 0, "mirror", &mirror, "push|fetch",
173                         "set up remote as a mirror to push to or fetch from",
174                         PARSE_OPT_OPTARG, parse_mirror_opt },
175                 OPT_END()
176         };
177
178         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
179                              0);
180
181         if (argc < 2)
182                 usage_with_options(builtin_remote_add_usage, options);
183
184         if (mirror && master)
185                 die("specifying a master branch makes no sense with --mirror");
186         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
187                 die("specifying branches to track makes sense only with fetch mirrors");
188
189         name = argv[0];
190         url = argv[1];
191
192         remote = remote_get(name);
193         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
194                         remote->fetch_refspec_nr))
195                 die("remote %s already exists.", name);
196
197         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
198         if (!valid_fetch_refspec(buf2.buf))
199                 die("'%s' is not a valid remote name", name);
200
201         strbuf_addf(&buf, "remote.%s.url", name);
202         if (git_config_set(buf.buf, url))
203                 return 1;
204
205         if (!mirror || mirror & MIRROR_FETCH) {
206                 strbuf_reset(&buf);
207                 strbuf_addf(&buf, "remote.%s.fetch", name);
208                 if (track.nr == 0)
209                         string_list_append(&track, "*");
210                 for (i = 0; i < track.nr; i++) {
211                         if (add_branch(buf.buf, track.items[i].string,
212                                        name, mirror, &buf2))
213                                 return 1;
214                 }
215         }
216
217         if (mirror & MIRROR_PUSH) {
218                 strbuf_reset(&buf);
219                 strbuf_addf(&buf, "remote.%s.mirror", name);
220                 if (git_config_set(buf.buf, "true"))
221                         return 1;
222         }
223
224         if (fetch_tags != TAGS_DEFAULT) {
225                 strbuf_reset(&buf);
226                 strbuf_addf(&buf, "remote.%s.tagopt", name);
227                 if (git_config_set(buf.buf,
228                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
229                         return 1;
230         }
231
232         if (fetch && fetch_remote(name))
233                 return 1;
234
235         if (master) {
236                 strbuf_reset(&buf);
237                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
238
239                 strbuf_reset(&buf2);
240                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
241
242                 if (create_symref(buf.buf, buf2.buf, "remote add"))
243                         return error("Could not setup master '%s'", master);
244         }
245
246         strbuf_release(&buf);
247         strbuf_release(&buf2);
248         string_list_clear(&track, 0);
249
250         return 0;
251 }
252
253 struct branch_info {
254         char *remote_name;
255         struct string_list merge;
256         int rebase;
257 };
258
259 static struct string_list branch_list;
260
261 static const char *abbrev_ref(const char *name, const char *prefix)
262 {
263         const char *abbrev = skip_prefix(name, prefix);
264         if (abbrev)
265                 return abbrev;
266         return name;
267 }
268 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
269
270 static int config_read_branches(const char *key, const char *value, void *cb)
271 {
272         if (!prefixcmp(key, "branch.")) {
273                 const char *orig_key = key;
274                 char *name;
275                 struct string_list_item *item;
276                 struct branch_info *info;
277                 enum { REMOTE, MERGE, REBASE } type;
278
279                 key += 7;
280                 if (!postfixcmp(key, ".remote")) {
281                         name = xstrndup(key, strlen(key) - 7);
282                         type = REMOTE;
283                 } else if (!postfixcmp(key, ".merge")) {
284                         name = xstrndup(key, strlen(key) - 6);
285                         type = MERGE;
286                 } else if (!postfixcmp(key, ".rebase")) {
287                         name = xstrndup(key, strlen(key) - 7);
288                         type = REBASE;
289                 } else
290                         return 0;
291
292                 item = string_list_insert(&branch_list, name);
293
294                 if (!item->util)
295                         item->util = xcalloc(sizeof(struct branch_info), 1);
296                 info = item->util;
297                 if (type == REMOTE) {
298                         if (info->remote_name)
299                                 warning("more than one %s", orig_key);
300                         info->remote_name = xstrdup(value);
301                 } else if (type == MERGE) {
302                         char *space = strchr(value, ' ');
303                         value = abbrev_branch(value);
304                         while (space) {
305                                 char *merge;
306                                 merge = xstrndup(value, space - value);
307                                 string_list_append(&info->merge, merge);
308                                 value = abbrev_branch(space + 1);
309                                 space = strchr(value, ' ');
310                         }
311                         string_list_append(&info->merge, xstrdup(value));
312                 } else
313                         info->rebase = git_config_bool(orig_key, value);
314         }
315         return 0;
316 }
317
318 static void read_branches(void)
319 {
320         if (branch_list.nr)
321                 return;
322         git_config(config_read_branches, NULL);
323 }
324
325 struct ref_states {
326         struct remote *remote;
327         struct string_list new, stale, tracked, heads, push;
328         int queried;
329 };
330
331 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
332 {
333         struct ref *fetch_map = NULL, **tail = &fetch_map;
334         struct ref *ref, *stale_refs;
335         int i;
336
337         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
338                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
339                         die("Could not get fetch map for refspec %s",
340                                 states->remote->fetch_refspec[i]);
341
342         states->new.strdup_strings = 1;
343         states->tracked.strdup_strings = 1;
344         states->stale.strdup_strings = 1;
345         for (ref = fetch_map; ref; ref = ref->next) {
346                 unsigned char sha1[20];
347                 if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
348                         string_list_append(&states->new, abbrev_branch(ref->name));
349                 else
350                         string_list_append(&states->tracked, abbrev_branch(ref->name));
351         }
352         stale_refs = get_stale_heads(states->remote->fetch,
353                                      states->remote->fetch_refspec_nr, fetch_map);
354         for (ref = stale_refs; ref; ref = ref->next) {
355                 struct string_list_item *item =
356                         string_list_append(&states->stale, abbrev_branch(ref->name));
357                 item->util = xstrdup(ref->name);
358         }
359         free_refs(stale_refs);
360         free_refs(fetch_map);
361
362         sort_string_list(&states->new);
363         sort_string_list(&states->tracked);
364         sort_string_list(&states->stale);
365
366         return 0;
367 }
368
369 struct push_info {
370         char *dest;
371         int forced;
372         enum {
373                 PUSH_STATUS_CREATE = 0,
374                 PUSH_STATUS_DELETE,
375                 PUSH_STATUS_UPTODATE,
376                 PUSH_STATUS_FASTFORWARD,
377                 PUSH_STATUS_OUTOFDATE,
378                 PUSH_STATUS_NOTQUERIED
379         } status;
380 };
381
382 static int get_push_ref_states(const struct ref *remote_refs,
383         struct ref_states *states)
384 {
385         struct remote *remote = states->remote;
386         struct ref *ref, *local_refs, *push_map;
387         if (remote->mirror)
388                 return 0;
389
390         local_refs = get_local_heads();
391         push_map = copy_ref_list(remote_refs);
392
393         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
394                         remote->push_refspec, MATCH_REFS_NONE);
395
396         states->push.strdup_strings = 1;
397         for (ref = push_map; ref; ref = ref->next) {
398                 struct string_list_item *item;
399                 struct push_info *info;
400
401                 if (!ref->peer_ref)
402                         continue;
403                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
404
405                 item = string_list_append(&states->push,
406                                           abbrev_branch(ref->peer_ref->name));
407                 item->util = xcalloc(sizeof(struct push_info), 1);
408                 info = item->util;
409                 info->forced = ref->force;
410                 info->dest = xstrdup(abbrev_branch(ref->name));
411
412                 if (is_null_sha1(ref->new_sha1)) {
413                         info->status = PUSH_STATUS_DELETE;
414                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
415                         info->status = PUSH_STATUS_UPTODATE;
416                 else if (is_null_sha1(ref->old_sha1))
417                         info->status = PUSH_STATUS_CREATE;
418                 else if (has_sha1_file(ref->old_sha1) &&
419                          ref_newer(ref->new_sha1, ref->old_sha1))
420                         info->status = PUSH_STATUS_FASTFORWARD;
421                 else
422                         info->status = PUSH_STATUS_OUTOFDATE;
423         }
424         free_refs(local_refs);
425         free_refs(push_map);
426         return 0;
427 }
428
429 static int get_push_ref_states_noquery(struct ref_states *states)
430 {
431         int i;
432         struct remote *remote = states->remote;
433         struct string_list_item *item;
434         struct push_info *info;
435
436         if (remote->mirror)
437                 return 0;
438
439         states->push.strdup_strings = 1;
440         if (!remote->push_refspec_nr) {
441                 item = string_list_append(&states->push, "(matching)");
442                 info = item->util = xcalloc(sizeof(struct push_info), 1);
443                 info->status = PUSH_STATUS_NOTQUERIED;
444                 info->dest = xstrdup(item->string);
445         }
446         for (i = 0; i < remote->push_refspec_nr; i++) {
447                 struct refspec *spec = remote->push + i;
448                 if (spec->matching)
449                         item = string_list_append(&states->push, "(matching)");
450                 else if (strlen(spec->src))
451                         item = string_list_append(&states->push, spec->src);
452                 else
453                         item = string_list_append(&states->push, "(delete)");
454
455                 info = item->util = xcalloc(sizeof(struct push_info), 1);
456                 info->forced = spec->force;
457                 info->status = PUSH_STATUS_NOTQUERIED;
458                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
459         }
460         return 0;
461 }
462
463 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
464 {
465         struct ref *ref, *matches;
466         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
467         struct refspec refspec;
468
469         refspec.force = 0;
470         refspec.pattern = 1;
471         refspec.src = refspec.dst = "refs/heads/*";
472         states->heads.strdup_strings = 1;
473         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
474         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
475                                     fetch_map, 1);
476         for (ref = matches; ref; ref = ref->next)
477                 string_list_append(&states->heads, abbrev_branch(ref->name));
478
479         free_refs(fetch_map);
480         free_refs(matches);
481
482         return 0;
483 }
484
485 struct known_remote {
486         struct known_remote *next;
487         struct remote *remote;
488 };
489
490 struct known_remotes {
491         struct remote *to_delete;
492         struct known_remote *list;
493 };
494
495 static int add_known_remote(struct remote *remote, void *cb_data)
496 {
497         struct known_remotes *all = cb_data;
498         struct known_remote *r;
499
500         if (!strcmp(all->to_delete->name, remote->name))
501                 return 0;
502
503         r = xmalloc(sizeof(*r));
504         r->remote = remote;
505         r->next = all->list;
506         all->list = r;
507         return 0;
508 }
509
510 struct branches_for_remote {
511         struct remote *remote;
512         struct string_list *branches, *skipped;
513         struct known_remotes *keep;
514 };
515
516 static int add_branch_for_removal(const char *refname,
517         const unsigned char *sha1, int flags, void *cb_data)
518 {
519         struct branches_for_remote *branches = cb_data;
520         struct refspec refspec;
521         struct string_list_item *item;
522         struct known_remote *kr;
523
524         memset(&refspec, 0, sizeof(refspec));
525         refspec.dst = (char *)refname;
526         if (remote_find_tracking(branches->remote, &refspec))
527                 return 0;
528
529         /* don't delete a branch if another remote also uses it */
530         for (kr = branches->keep->list; kr; kr = kr->next) {
531                 memset(&refspec, 0, sizeof(refspec));
532                 refspec.dst = (char *)refname;
533                 if (!remote_find_tracking(kr->remote, &refspec))
534                         return 0;
535         }
536
537         /* don't delete non-remote-tracking refs */
538         if (prefixcmp(refname, "refs/remotes")) {
539                 /* advise user how to delete local branches */
540                 if (!prefixcmp(refname, "refs/heads/"))
541                         string_list_append(branches->skipped,
542                                            abbrev_branch(refname));
543                 /* silently skip over other non-remote refs */
544                 return 0;
545         }
546
547         /* make sure that symrefs are deleted */
548         if (flags & REF_ISSYMREF)
549                 return unlink(git_path("%s", refname));
550
551         item = string_list_append(branches->branches, refname);
552         item->util = xmalloc(20);
553         hashcpy(item->util, sha1);
554
555         return 0;
556 }
557
558 struct rename_info {
559         const char *old;
560         const char *new;
561         struct string_list *remote_branches;
562 };
563
564 static int read_remote_branches(const char *refname,
565         const unsigned char *sha1, int flags, void *cb_data)
566 {
567         struct rename_info *rename = cb_data;
568         struct strbuf buf = STRBUF_INIT;
569         struct string_list_item *item;
570         int flag;
571         unsigned char orig_sha1[20];
572         const char *symref;
573
574         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
575         if (!prefixcmp(refname, buf.buf)) {
576                 item = string_list_append(rename->remote_branches, xstrdup(refname));
577                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
578                 if (flag & REF_ISSYMREF)
579                         item->util = xstrdup(symref);
580                 else
581                         item->util = NULL;
582         }
583
584         return 0;
585 }
586
587 static int migrate_file(struct remote *remote)
588 {
589         struct strbuf buf = STRBUF_INIT;
590         int i;
591         char *path = NULL;
592
593         strbuf_addf(&buf, "remote.%s.url", remote->name);
594         for (i = 0; i < remote->url_nr; i++)
595                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
596                         return error("Could not append '%s' to '%s'",
597                                         remote->url[i], buf.buf);
598         strbuf_reset(&buf);
599         strbuf_addf(&buf, "remote.%s.push", remote->name);
600         for (i = 0; i < remote->push_refspec_nr; i++)
601                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
602                         return error("Could not append '%s' to '%s'",
603                                         remote->push_refspec[i], buf.buf);
604         strbuf_reset(&buf);
605         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
606         for (i = 0; i < remote->fetch_refspec_nr; i++)
607                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
608                         return error("Could not append '%s' to '%s'",
609                                         remote->fetch_refspec[i], buf.buf);
610         if (remote->origin == REMOTE_REMOTES)
611                 path = git_path("remotes/%s", remote->name);
612         else if (remote->origin == REMOTE_BRANCHES)
613                 path = git_path("branches/%s", remote->name);
614         if (path)
615                 unlink_or_warn(path);
616         return 0;
617 }
618
619 static int mv(int argc, const char **argv)
620 {
621         struct option options[] = {
622                 OPT_END()
623         };
624         struct remote *oldremote, *newremote;
625         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
626                 old_remote_context = STRBUF_INIT;
627         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
628         struct rename_info rename;
629         int i, refspec_updated = 0;
630
631         if (argc != 3)
632                 usage_with_options(builtin_remote_rename_usage, options);
633
634         rename.old = argv[1];
635         rename.new = argv[2];
636         rename.remote_branches = &remote_branches;
637
638         oldremote = remote_get(rename.old);
639         if (!oldremote)
640                 die("No such remote: %s", rename.old);
641
642         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
643                 return migrate_file(oldremote);
644
645         newremote = remote_get(rename.new);
646         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
647                 die("remote %s already exists.", rename.new);
648
649         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
650         if (!valid_fetch_refspec(buf.buf))
651                 die("'%s' is not a valid remote name", rename.new);
652
653         strbuf_reset(&buf);
654         strbuf_addf(&buf, "remote.%s", rename.old);
655         strbuf_addf(&buf2, "remote.%s", rename.new);
656         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
657                 return error("Could not rename config section '%s' to '%s'",
658                                 buf.buf, buf2.buf);
659
660         strbuf_reset(&buf);
661         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
662         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
663                 return error("Could not remove config section '%s'", buf.buf);
664         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
665         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
666                 char *ptr;
667
668                 strbuf_reset(&buf2);
669                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
670                 ptr = strstr(buf2.buf, old_remote_context.buf);
671                 if (ptr) {
672                         refspec_updated = 1;
673                         strbuf_splice(&buf2,
674                                       ptr-buf2.buf + strlen(":refs/remotes/"),
675                                       strlen(rename.old), rename.new,
676                                       strlen(rename.new));
677                 } else
678                         warning("Not updating non-default fetch respec\n"
679                                 "\t%s\n"
680                                 "\tPlease update the configuration manually if necessary.",
681                                 buf2.buf);
682
683                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
684                         return error("Could not append '%s'", buf.buf);
685         }
686
687         read_branches();
688         for (i = 0; i < branch_list.nr; i++) {
689                 struct string_list_item *item = branch_list.items + i;
690                 struct branch_info *info = item->util;
691                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
692                         strbuf_reset(&buf);
693                         strbuf_addf(&buf, "branch.%s.remote", item->string);
694                         if (git_config_set(buf.buf, rename.new)) {
695                                 return error("Could not set '%s'", buf.buf);
696                         }
697                 }
698         }
699
700         if (!refspec_updated)
701                 return 0;
702
703         /*
704          * First remove symrefs, then rename the rest, finally create
705          * the new symrefs.
706          */
707         for_each_ref(read_remote_branches, &rename);
708         for (i = 0; i < remote_branches.nr; i++) {
709                 struct string_list_item *item = remote_branches.items + i;
710                 int flag = 0;
711                 unsigned char sha1[20];
712
713                 resolve_ref(item->string, sha1, 1, &flag);
714                 if (!(flag & REF_ISSYMREF))
715                         continue;
716                 if (delete_ref(item->string, NULL, REF_NODEREF))
717                         die("deleting '%s' failed", item->string);
718         }
719         for (i = 0; i < remote_branches.nr; i++) {
720                 struct string_list_item *item = remote_branches.items + i;
721
722                 if (item->util)
723                         continue;
724                 strbuf_reset(&buf);
725                 strbuf_addstr(&buf, item->string);
726                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
727                                 rename.new, strlen(rename.new));
728                 strbuf_reset(&buf2);
729                 strbuf_addf(&buf2, "remote: renamed %s to %s",
730                                 item->string, buf.buf);
731                 if (rename_ref(item->string, buf.buf, buf2.buf))
732                         die("renaming '%s' failed", item->string);
733         }
734         for (i = 0; i < remote_branches.nr; i++) {
735                 struct string_list_item *item = remote_branches.items + i;
736
737                 if (!item->util)
738                         continue;
739                 strbuf_reset(&buf);
740                 strbuf_addstr(&buf, item->string);
741                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
742                                 rename.new, strlen(rename.new));
743                 strbuf_reset(&buf2);
744                 strbuf_addstr(&buf2, item->util);
745                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
746                                 rename.new, strlen(rename.new));
747                 strbuf_reset(&buf3);
748                 strbuf_addf(&buf3, "remote: renamed %s to %s",
749                                 item->string, buf.buf);
750                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
751                         die("creating '%s' failed", buf.buf);
752         }
753         return 0;
754 }
755
756 static int remove_branches(struct string_list *branches)
757 {
758         int i, result = 0;
759         for (i = 0; i < branches->nr; i++) {
760                 struct string_list_item *item = branches->items + i;
761                 const char *refname = item->string;
762                 unsigned char *sha1 = item->util;
763
764                 if (delete_ref(refname, sha1, 0))
765                         result |= error("Could not remove branch %s", refname);
766         }
767         return result;
768 }
769
770 static int rm(int argc, const char **argv)
771 {
772         struct option options[] = {
773                 OPT_END()
774         };
775         struct remote *remote;
776         struct strbuf buf = STRBUF_INIT;
777         struct known_remotes known_remotes = { NULL, NULL };
778         struct string_list branches = STRING_LIST_INIT_DUP;
779         struct string_list skipped = STRING_LIST_INIT_DUP;
780         struct branches_for_remote cb_data;
781         int i, result;
782
783         memset(&cb_data, 0, sizeof(cb_data));
784         cb_data.branches = &branches;
785         cb_data.skipped = &skipped;
786         cb_data.keep = &known_remotes;
787
788         if (argc != 2)
789                 usage_with_options(builtin_remote_rm_usage, options);
790
791         remote = remote_get(argv[1]);
792         if (!remote)
793                 die("No such remote: %s", argv[1]);
794
795         known_remotes.to_delete = remote;
796         for_each_remote(add_known_remote, &known_remotes);
797
798         strbuf_addf(&buf, "remote.%s", remote->name);
799         if (git_config_rename_section(buf.buf, NULL) < 1)
800                 return error("Could not remove config section '%s'", buf.buf);
801
802         read_branches();
803         for (i = 0; i < branch_list.nr; i++) {
804                 struct string_list_item *item = branch_list.items + i;
805                 struct branch_info *info = item->util;
806                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
807                         const char *keys[] = { "remote", "merge", NULL }, **k;
808                         for (k = keys; *k; k++) {
809                                 strbuf_reset(&buf);
810                                 strbuf_addf(&buf, "branch.%s.%s",
811                                                 item->string, *k);
812                                 if (git_config_set(buf.buf, NULL)) {
813                                         strbuf_release(&buf);
814                                         return -1;
815                                 }
816                         }
817                 }
818         }
819
820         /*
821          * We cannot just pass a function to for_each_ref() which deletes
822          * the branches one by one, since for_each_ref() relies on cached
823          * refs, which are invalidated when deleting a branch.
824          */
825         cb_data.remote = remote;
826         result = for_each_ref(add_branch_for_removal, &cb_data);
827         strbuf_release(&buf);
828
829         if (!result)
830                 result = remove_branches(&branches);
831         string_list_clear(&branches, 1);
832
833         if (skipped.nr) {
834                 fprintf(stderr, skipped.nr == 1 ?
835                         "Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
836                         "to delete it, use:\n" :
837                         "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
838                         "to delete them, use:\n");
839                 for (i = 0; i < skipped.nr; i++)
840                         fprintf(stderr, "  git branch -d %s\n",
841                                 skipped.items[i].string);
842         }
843         string_list_clear(&skipped, 0);
844
845         return result;
846 }
847
848 static void clear_push_info(void *util, const char *string)
849 {
850         struct push_info *info = util;
851         free(info->dest);
852         free(info);
853 }
854
855 static void free_remote_ref_states(struct ref_states *states)
856 {
857         string_list_clear(&states->new, 0);
858         string_list_clear(&states->stale, 1);
859         string_list_clear(&states->tracked, 0);
860         string_list_clear(&states->heads, 0);
861         string_list_clear_func(&states->push, clear_push_info);
862 }
863
864 static int append_ref_to_tracked_list(const char *refname,
865         const unsigned char *sha1, int flags, void *cb_data)
866 {
867         struct ref_states *states = cb_data;
868         struct refspec refspec;
869
870         if (flags & REF_ISSYMREF)
871                 return 0;
872
873         memset(&refspec, 0, sizeof(refspec));
874         refspec.dst = (char *)refname;
875         if (!remote_find_tracking(states->remote, &refspec))
876                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
877
878         return 0;
879 }
880
881 static int get_remote_ref_states(const char *name,
882                                  struct ref_states *states,
883                                  int query)
884 {
885         struct transport *transport;
886         const struct ref *remote_refs;
887
888         states->remote = remote_get(name);
889         if (!states->remote)
890                 return error("No such remote: %s", name);
891
892         read_branches();
893
894         if (query) {
895                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
896                         states->remote->url[0] : NULL);
897                 remote_refs = transport_get_remote_refs(transport);
898                 transport_disconnect(transport);
899
900                 states->queried = 1;
901                 if (query & GET_REF_STATES)
902                         get_ref_states(remote_refs, states);
903                 if (query & GET_HEAD_NAMES)
904                         get_head_names(remote_refs, states);
905                 if (query & GET_PUSH_REF_STATES)
906                         get_push_ref_states(remote_refs, states);
907         } else {
908                 for_each_ref(append_ref_to_tracked_list, states);
909                 sort_string_list(&states->tracked);
910                 get_push_ref_states_noquery(states);
911         }
912
913         return 0;
914 }
915
916 struct show_info {
917         struct string_list *list;
918         struct ref_states *states;
919         int width, width2;
920         int any_rebase;
921 };
922
923 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
924 {
925         struct show_info *info = cb_data;
926         int n = strlen(item->string);
927         if (n > info->width)
928                 info->width = n;
929         string_list_insert(info->list, item->string);
930         return 0;
931 }
932
933 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
934 {
935         struct show_info *info = cb_data;
936         struct ref_states *states = info->states;
937         const char *name = item->string;
938
939         if (states->queried) {
940                 const char *fmt = "%s";
941                 const char *arg = "";
942                 if (string_list_has_string(&states->new, name)) {
943                         fmt = " new (next fetch will store in remotes/%s)";
944                         arg = states->remote->name;
945                 } else if (string_list_has_string(&states->tracked, name))
946                         arg = " tracked";
947                 else if (string_list_has_string(&states->stale, name))
948                         arg = " stale (use 'git remote prune' to remove)";
949                 else
950                         arg = " ???";
951                 printf("    %-*s", info->width, name);
952                 printf(fmt, arg);
953                 printf("\n");
954         } else
955                 printf("    %s\n", name);
956
957         return 0;
958 }
959
960 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
961 {
962         struct show_info *show_info = cb_data;
963         struct ref_states *states = show_info->states;
964         struct branch_info *branch_info = branch_item->util;
965         struct string_list_item *item;
966         int n;
967
968         if (!branch_info->merge.nr || !branch_info->remote_name ||
969             strcmp(states->remote->name, branch_info->remote_name))
970                 return 0;
971         if ((n = strlen(branch_item->string)) > show_info->width)
972                 show_info->width = n;
973         if (branch_info->rebase)
974                 show_info->any_rebase = 1;
975
976         item = string_list_insert(show_info->list, branch_item->string);
977         item->util = branch_info;
978
979         return 0;
980 }
981
982 static int show_local_info_item(struct string_list_item *item, void *cb_data)
983 {
984         struct show_info *show_info = cb_data;
985         struct branch_info *branch_info = item->util;
986         struct string_list *merge = &branch_info->merge;
987         const char *also;
988         int i;
989
990         if (branch_info->rebase && branch_info->merge.nr > 1) {
991                 error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
992                         item->string);
993                 return 0;
994         }
995
996         printf("    %-*s ", show_info->width, item->string);
997         if (branch_info->rebase) {
998                 printf("rebases onto remote %s\n", merge->items[0].string);
999                 return 0;
1000         } else if (show_info->any_rebase) {
1001                 printf(" merges with remote %s\n", merge->items[0].string);
1002                 also = "    and with remote";
1003         } else {
1004                 printf("merges with remote %s\n", merge->items[0].string);
1005                 also = "   and with remote";
1006         }
1007         for (i = 1; i < merge->nr; i++)
1008                 printf("    %-*s %s %s\n", show_info->width, "", also,
1009                        merge->items[i].string);
1010
1011         return 0;
1012 }
1013
1014 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1015 {
1016         struct show_info *show_info = cb_data;
1017         struct push_info *push_info = push_item->util;
1018         struct string_list_item *item;
1019         int n;
1020         if ((n = strlen(push_item->string)) > show_info->width)
1021                 show_info->width = n;
1022         if ((n = strlen(push_info->dest)) > show_info->width2)
1023                 show_info->width2 = n;
1024         item = string_list_append(show_info->list, push_item->string);
1025         item->util = push_item->util;
1026         return 0;
1027 }
1028
1029 /*
1030  * Sorting comparison for a string list that has push_info
1031  * structs in its util field
1032  */
1033 static int cmp_string_with_push(const void *va, const void *vb)
1034 {
1035         const struct string_list_item *a = va;
1036         const struct string_list_item *b = vb;
1037         const struct push_info *a_push = a->util;
1038         const struct push_info *b_push = b->util;
1039         int cmp = strcmp(a->string, b->string);
1040         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1041 }
1042
1043 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1044 {
1045         struct show_info *show_info = cb_data;
1046         struct push_info *push_info = item->util;
1047         char *src = item->string, *status = NULL;
1048
1049         switch (push_info->status) {
1050         case PUSH_STATUS_CREATE:
1051                 status = "create";
1052                 break;
1053         case PUSH_STATUS_DELETE:
1054                 status = "delete";
1055                 src = "(none)";
1056                 break;
1057         case PUSH_STATUS_UPTODATE:
1058                 status = "up to date";
1059                 break;
1060         case PUSH_STATUS_FASTFORWARD:
1061                 status = "fast-forwardable";
1062                 break;
1063         case PUSH_STATUS_OUTOFDATE:
1064                 status = "local out of date";
1065                 break;
1066         case PUSH_STATUS_NOTQUERIED:
1067                 break;
1068         }
1069         if (status)
1070                 printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
1071                         push_info->forced ? "forces" : "pushes",
1072                         show_info->width2, push_info->dest, status);
1073         else
1074                 printf("    %-*s %s to %s\n", show_info->width, src,
1075                         push_info->forced ? "forces" : "pushes",
1076                         push_info->dest);
1077         return 0;
1078 }
1079
1080 static int show(int argc, const char **argv)
1081 {
1082         int no_query = 0, result = 0, query_flag = 0;
1083         struct option options[] = {
1084                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
1085                 OPT_END()
1086         };
1087         struct ref_states states;
1088         struct string_list info_list = STRING_LIST_INIT_NODUP;
1089         struct show_info info;
1090
1091         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1092                              0);
1093
1094         if (argc < 1)
1095                 return show_all();
1096
1097         if (!no_query)
1098                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1099
1100         memset(&states, 0, sizeof(states));
1101         memset(&info, 0, sizeof(info));
1102         info.states = &states;
1103         info.list = &info_list;
1104         for (; argc; argc--, argv++) {
1105                 int i;
1106                 const char **url;
1107                 int url_nr;
1108
1109                 get_remote_ref_states(*argv, &states, query_flag);
1110
1111                 printf("* remote %s\n", *argv);
1112                 printf("  Fetch URL: %s\n", states.remote->url_nr > 0 ?
1113                         states.remote->url[0] : "(no URL)");
1114                 if (states.remote->pushurl_nr) {
1115                         url = states.remote->pushurl;
1116                         url_nr = states.remote->pushurl_nr;
1117                 } else {
1118                         url = states.remote->url;
1119                         url_nr = states.remote->url_nr;
1120                 }
1121                 for (i = 0; i < url_nr; i++)
1122                         printf("  Push  URL: %s\n", url[i]);
1123                 if (!i)
1124                         printf("  Push  URL: %s\n", "(no URL)");
1125                 if (no_query)
1126                         printf("  HEAD branch: (not queried)\n");
1127                 else if (!states.heads.nr)
1128                         printf("  HEAD branch: (unknown)\n");
1129                 else if (states.heads.nr == 1)
1130                         printf("  HEAD branch: %s\n", states.heads.items[0].string);
1131                 else {
1132                         printf("  HEAD branch (remote HEAD is ambiguous,"
1133                                " may be one of the following):\n");
1134                         for (i = 0; i < states.heads.nr; i++)
1135                                 printf("    %s\n", states.heads.items[i].string);
1136                 }
1137
1138                 /* remote branch info */
1139                 info.width = 0;
1140                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1141                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1142                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1143                 if (info.list->nr)
1144                         printf("  Remote branch%s:%s\n",
1145                                info.list->nr > 1 ? "es" : "",
1146                                 no_query ? " (status not queried)" : "");
1147                 for_each_string_list(info.list, show_remote_info_item, &info);
1148                 string_list_clear(info.list, 0);
1149
1150                 /* git pull info */
1151                 info.width = 0;
1152                 info.any_rebase = 0;
1153                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1154                 if (info.list->nr)
1155                         printf("  Local branch%s configured for 'git pull':\n",
1156                                info.list->nr > 1 ? "es" : "");
1157                 for_each_string_list(info.list, show_local_info_item, &info);
1158                 string_list_clear(info.list, 0);
1159
1160                 /* git push info */
1161                 if (states.remote->mirror)
1162                         printf("  Local refs will be mirrored by 'git push'\n");
1163
1164                 info.width = info.width2 = 0;
1165                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1166                 qsort(info.list->items, info.list->nr,
1167                         sizeof(*info.list->items), cmp_string_with_push);
1168                 if (info.list->nr)
1169                         printf("  Local ref%s configured for 'git push'%s:\n",
1170                                 info.list->nr > 1 ? "s" : "",
1171                                 no_query ? " (status not queried)" : "");
1172                 for_each_string_list(info.list, show_push_info_item, &info);
1173                 string_list_clear(info.list, 0);
1174
1175                 free_remote_ref_states(&states);
1176         }
1177
1178         return result;
1179 }
1180
1181 static int set_head(int argc, const char **argv)
1182 {
1183         int i, opt_a = 0, opt_d = 0, result = 0;
1184         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1185         char *head_name = NULL;
1186
1187         struct option options[] = {
1188                 OPT_BOOLEAN('a', "auto", &opt_a,
1189                             "set refs/remotes/<name>/HEAD according to remote"),
1190                 OPT_BOOLEAN('d', "delete", &opt_d,
1191                             "delete refs/remotes/<name>/HEAD"),
1192                 OPT_END()
1193         };
1194         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1195                              0);
1196         if (argc)
1197                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1198
1199         if (!opt_a && !opt_d && argc == 2) {
1200                 head_name = xstrdup(argv[1]);
1201         } else if (opt_a && !opt_d && argc == 1) {
1202                 struct ref_states states;
1203                 memset(&states, 0, sizeof(states));
1204                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1205                 if (!states.heads.nr)
1206                         result |= error("Cannot determine remote HEAD");
1207                 else if (states.heads.nr > 1) {
1208                         result |= error("Multiple remote HEAD branches. "
1209                                         "Please choose one explicitly with:");
1210                         for (i = 0; i < states.heads.nr; i++)
1211                                 fprintf(stderr, "  git remote set-head %s %s\n",
1212                                         argv[0], states.heads.items[i].string);
1213                 } else
1214                         head_name = xstrdup(states.heads.items[0].string);
1215                 free_remote_ref_states(&states);
1216         } else if (opt_d && !opt_a && argc == 1) {
1217                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1218                         result |= error("Could not delete %s", buf.buf);
1219         } else
1220                 usage_with_options(builtin_remote_sethead_usage, options);
1221
1222         if (head_name) {
1223                 unsigned char sha1[20];
1224                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1225                 /* make sure it's valid */
1226                 if (!resolve_ref(buf2.buf, sha1, 1, NULL))
1227                         result |= error("Not a valid ref: %s", buf2.buf);
1228                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1229                         result |= error("Could not setup %s", buf.buf);
1230                 if (opt_a)
1231                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1232                 free(head_name);
1233         }
1234
1235         strbuf_release(&buf);
1236         strbuf_release(&buf2);
1237         return result;
1238 }
1239
1240 static int prune(int argc, const char **argv)
1241 {
1242         int dry_run = 0, result = 0;
1243         struct option options[] = {
1244                 OPT__DRY_RUN(&dry_run, "dry run"),
1245                 OPT_END()
1246         };
1247
1248         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1249                              0);
1250
1251         if (argc < 1)
1252                 usage_with_options(builtin_remote_prune_usage, options);
1253
1254         for (; argc; argc--, argv++)
1255                 result |= prune_remote(*argv, dry_run);
1256
1257         return result;
1258 }
1259
1260 static int prune_remote(const char *remote, int dry_run)
1261 {
1262         int result = 0, i;
1263         struct ref_states states;
1264         const char *dangling_msg = dry_run
1265                 ? " %s will become dangling!\n"
1266                 : " %s has become dangling!\n";
1267
1268         memset(&states, 0, sizeof(states));
1269         get_remote_ref_states(remote, &states, GET_REF_STATES);
1270
1271         if (states.stale.nr) {
1272                 printf("Pruning %s\n", remote);
1273                 printf("URL: %s\n",
1274                        states.remote->url_nr
1275                        ? states.remote->url[0]
1276                        : "(no URL)");
1277         }
1278
1279         for (i = 0; i < states.stale.nr; i++) {
1280                 const char *refname = states.stale.items[i].util;
1281
1282                 if (!dry_run)
1283                         result |= delete_ref(refname, NULL, 0);
1284
1285                 printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1286                        abbrev_ref(refname, "refs/remotes/"));
1287                 warn_dangling_symref(stdout, dangling_msg, refname);
1288         }
1289
1290         free_remote_ref_states(&states);
1291         return result;
1292 }
1293
1294 static int get_remote_default(const char *key, const char *value, void *priv)
1295 {
1296         if (strcmp(key, "remotes.default") == 0) {
1297                 int *found = priv;
1298                 *found = 1;
1299         }
1300         return 0;
1301 }
1302
1303 static int update(int argc, const char **argv)
1304 {
1305         int i, prune = 0;
1306         struct option options[] = {
1307                 OPT_BOOLEAN('p', "prune", &prune,
1308                             "prune remotes after fetching"),
1309                 OPT_END()
1310         };
1311         const char **fetch_argv;
1312         int fetch_argc = 0;
1313         int default_defined = 0;
1314
1315         fetch_argv = xmalloc(sizeof(char *) * (argc+5));
1316
1317         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1318                              PARSE_OPT_KEEP_ARGV0);
1319
1320         fetch_argv[fetch_argc++] = "fetch";
1321
1322         if (prune)
1323                 fetch_argv[fetch_argc++] = "--prune";
1324         if (verbose)
1325                 fetch_argv[fetch_argc++] = "-v";
1326         fetch_argv[fetch_argc++] = "--multiple";
1327         if (argc < 2)
1328                 fetch_argv[fetch_argc++] = "default";
1329         for (i = 1; i < argc; i++)
1330                 fetch_argv[fetch_argc++] = argv[i];
1331
1332         if (strcmp(fetch_argv[fetch_argc-1], "default") == 0) {
1333                 git_config(get_remote_default, &default_defined);
1334                 if (!default_defined)
1335                         fetch_argv[fetch_argc-1] = "--all";
1336         }
1337
1338         fetch_argv[fetch_argc] = NULL;
1339
1340         return run_command_v_opt(fetch_argv, RUN_GIT_CMD);
1341 }
1342
1343 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1344 {
1345         return git_config_set_multivar(key, NULL, NULL, 1);
1346 }
1347
1348 static int add_branches(struct remote *remote, const char **branches,
1349                         const char *key)
1350 {
1351         const char *remotename = remote->name;
1352         int mirror = remote->mirror;
1353         struct strbuf refspec = STRBUF_INIT;
1354
1355         for (; *branches; branches++)
1356                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1357                         strbuf_release(&refspec);
1358                         return 1;
1359                 }
1360
1361         strbuf_release(&refspec);
1362         return 0;
1363 }
1364
1365 static int set_remote_branches(const char *remotename, const char **branches,
1366                                 int add_mode)
1367 {
1368         struct strbuf key = STRBUF_INIT;
1369         struct remote *remote;
1370
1371         strbuf_addf(&key, "remote.%s.fetch", remotename);
1372
1373         if (!remote_is_configured(remotename))
1374                 die("No such remote '%s'", remotename);
1375         remote = remote_get(remotename);
1376
1377         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1378                 strbuf_release(&key);
1379                 return 1;
1380         }
1381         if (add_branches(remote, branches, key.buf)) {
1382                 strbuf_release(&key);
1383                 return 1;
1384         }
1385
1386         strbuf_release(&key);
1387         return 0;
1388 }
1389
1390 static int set_branches(int argc, const char **argv)
1391 {
1392         int add_mode = 0;
1393         struct option options[] = {
1394                 OPT_BOOLEAN('\0', "add", &add_mode, "add branch"),
1395                 OPT_END()
1396         };
1397
1398         argc = parse_options(argc, argv, NULL, options,
1399                              builtin_remote_setbranches_usage, 0);
1400         if (argc == 0) {
1401                 error("no remote specified");
1402                 usage_with_options(builtin_remote_setbranches_usage, options);
1403         }
1404         argv[argc] = NULL;
1405
1406         return set_remote_branches(argv[0], argv + 1, add_mode);
1407 }
1408
1409 static int set_url(int argc, const char **argv)
1410 {
1411         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1412         int matches = 0, negative_matches = 0;
1413         const char *remotename = NULL;
1414         const char *newurl = NULL;
1415         const char *oldurl = NULL;
1416         struct remote *remote;
1417         regex_t old_regex;
1418         const char **urlset;
1419         int urlset_nr;
1420         struct strbuf name_buf = STRBUF_INIT;
1421         struct option options[] = {
1422                 OPT_BOOLEAN('\0', "push", &push_mode,
1423                             "manipulate push URLs"),
1424                 OPT_BOOLEAN('\0', "add", &add_mode,
1425                             "add URL"),
1426                 OPT_BOOLEAN('\0', "delete", &delete_mode,
1427                             "delete URLs"),
1428                 OPT_END()
1429         };
1430         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1431                              PARSE_OPT_KEEP_ARGV0);
1432
1433         if (add_mode && delete_mode)
1434                 die("--add --delete doesn't make sense");
1435
1436         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1437                 usage_with_options(builtin_remote_seturl_usage, options);
1438
1439         remotename = argv[1];
1440         newurl = argv[2];
1441         if (argc > 3)
1442                 oldurl = argv[3];
1443
1444         if (delete_mode)
1445                 oldurl = newurl;
1446
1447         if (!remote_is_configured(remotename))
1448                 die("No such remote '%s'", remotename);
1449         remote = remote_get(remotename);
1450
1451         if (push_mode) {
1452                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1453                 urlset = remote->pushurl;
1454                 urlset_nr = remote->pushurl_nr;
1455         } else {
1456                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1457                 urlset = remote->url;
1458                 urlset_nr = remote->url_nr;
1459         }
1460
1461         /* Special cases that add new entry. */
1462         if ((!oldurl && !delete_mode) || add_mode) {
1463                 if (add_mode)
1464                         git_config_set_multivar(name_buf.buf, newurl,
1465                                 "^$", 0);
1466                 else
1467                         git_config_set(name_buf.buf, newurl);
1468                 strbuf_release(&name_buf);
1469                 return 0;
1470         }
1471
1472         /* Old URL specified. Demand that one matches. */
1473         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1474                 die("Invalid old URL pattern: %s", oldurl);
1475
1476         for (i = 0; i < urlset_nr; i++)
1477                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1478                         matches++;
1479                 else
1480                         negative_matches++;
1481         if (!delete_mode && !matches)
1482                 die("No such URL found: %s", oldurl);
1483         if (delete_mode && !negative_matches && !push_mode)
1484                 die("Will not delete all non-push URLs");
1485
1486         regfree(&old_regex);
1487
1488         if (!delete_mode)
1489                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1490         else
1491                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1492         return 0;
1493 }
1494
1495 static int get_one_entry(struct remote *remote, void *priv)
1496 {
1497         struct string_list *list = priv;
1498         struct strbuf url_buf = STRBUF_INIT;
1499         const char **url;
1500         int i, url_nr;
1501
1502         if (remote->url_nr > 0) {
1503                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1504                 string_list_append(list, remote->name)->util =
1505                                 strbuf_detach(&url_buf, NULL);
1506         } else
1507                 string_list_append(list, remote->name)->util = NULL;
1508         if (remote->pushurl_nr) {
1509                 url = remote->pushurl;
1510                 url_nr = remote->pushurl_nr;
1511         } else {
1512                 url = remote->url;
1513                 url_nr = remote->url_nr;
1514         }
1515         for (i = 0; i < url_nr; i++)
1516         {
1517                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1518                 string_list_append(list, remote->name)->util =
1519                                 strbuf_detach(&url_buf, NULL);
1520         }
1521
1522         return 0;
1523 }
1524
1525 static int show_all(void)
1526 {
1527         struct string_list list = STRING_LIST_INIT_NODUP;
1528         int result;
1529
1530         list.strdup_strings = 1;
1531         result = for_each_remote(get_one_entry, &list);
1532
1533         if (!result) {
1534                 int i;
1535
1536                 sort_string_list(&list);
1537                 for (i = 0; i < list.nr; i++) {
1538                         struct string_list_item *item = list.items + i;
1539                         if (verbose)
1540                                 printf("%s\t%s\n", item->string,
1541                                         item->util ? (const char *)item->util : "");
1542                         else {
1543                                 if (i && !strcmp((item - 1)->string, item->string))
1544                                         continue;
1545                                 printf("%s\n", item->string);
1546                         }
1547                 }
1548         }
1549         string_list_clear(&list, 1);
1550         return result;
1551 }
1552
1553 int cmd_remote(int argc, const char **argv, const char *prefix)
1554 {
1555         struct option options[] = {
1556                 OPT__VERBOSE(&verbose, "be verbose; must be placed before a subcommand"),
1557                 OPT_END()
1558         };
1559         int result;
1560
1561         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1562                 PARSE_OPT_STOP_AT_NON_OPTION);
1563
1564         if (argc < 1)
1565                 result = show_all();
1566         else if (!strcmp(argv[0], "add"))
1567                 result = add(argc, argv);
1568         else if (!strcmp(argv[0], "rename"))
1569                 result = mv(argc, argv);
1570         else if (!strcmp(argv[0], "rm"))
1571                 result = rm(argc, argv);
1572         else if (!strcmp(argv[0], "set-head"))
1573                 result = set_head(argc, argv);
1574         else if (!strcmp(argv[0], "set-branches"))
1575                 result = set_branches(argc, argv);
1576         else if (!strcmp(argv[0], "set-url"))
1577                 result = set_url(argc, argv);
1578         else if (!strcmp(argv[0], "show"))
1579                 result = show(argc, argv);
1580         else if (!strcmp(argv[0], "prune"))
1581                 result = prune(argc, argv);
1582         else if (!strcmp(argv[0], "update"))
1583                 result = update(argc, argv);
1584         else {
1585                 error("Unknown subcommand: %s", argv[0]);
1586                 usage_with_options(builtin_remote_usage, options);
1587         }
1588
1589         return result ? 1 : 0;
1590 }