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