rev-parse --branches/--tags/--remotes=pattern
[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 = 1;
276         states->tracked.strdup_strings = 1;
277         states->stale.strdup_strings = 1;
278         for (ref = fetch_map; ref; ref = ref->next) {
279                 unsigned char sha1[20];
280                 if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
281                         string_list_append(abbrev_branch(ref->name), &states->new);
282                 else
283                         string_list_append(abbrev_branch(ref->name), &states->tracked);
284         }
285         stale_refs = get_stale_heads(states->remote, fetch_map);
286         for (ref = stale_refs; ref; ref = ref->next) {
287                 struct string_list_item *item =
288                         string_list_append(abbrev_branch(ref->name), &states->stale);
289                 item->util = xstrdup(ref->name);
290         }
291         free_refs(stale_refs);
292         free_refs(fetch_map);
293
294         sort_string_list(&states->new);
295         sort_string_list(&states->tracked);
296         sort_string_list(&states->stale);
297
298         return 0;
299 }
300
301 struct push_info {
302         char *dest;
303         int forced;
304         enum {
305                 PUSH_STATUS_CREATE = 0,
306                 PUSH_STATUS_DELETE,
307                 PUSH_STATUS_UPTODATE,
308                 PUSH_STATUS_FASTFORWARD,
309                 PUSH_STATUS_OUTOFDATE,
310                 PUSH_STATUS_NOTQUERIED,
311         } status;
312 };
313
314 static int get_push_ref_states(const struct ref *remote_refs,
315         struct ref_states *states)
316 {
317         struct remote *remote = states->remote;
318         struct ref *ref, *local_refs, *push_map;
319         if (remote->mirror)
320                 return 0;
321
322         local_refs = get_local_heads();
323         push_map = copy_ref_list(remote_refs);
324
325         match_refs(local_refs, &push_map, remote->push_refspec_nr,
326                    remote->push_refspec, MATCH_REFS_NONE);
327
328         states->push.strdup_strings = 1;
329         for (ref = push_map; ref; ref = ref->next) {
330                 struct string_list_item *item;
331                 struct push_info *info;
332
333                 if (!ref->peer_ref)
334                         continue;
335                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
336
337                 item = string_list_append(abbrev_branch(ref->peer_ref->name),
338                                           &states->push);
339                 item->util = xcalloc(sizeof(struct push_info), 1);
340                 info = item->util;
341                 info->forced = ref->force;
342                 info->dest = xstrdup(abbrev_branch(ref->name));
343
344                 if (is_null_sha1(ref->new_sha1)) {
345                         info->status = PUSH_STATUS_DELETE;
346                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
347                         info->status = PUSH_STATUS_UPTODATE;
348                 else if (is_null_sha1(ref->old_sha1))
349                         info->status = PUSH_STATUS_CREATE;
350                 else if (has_sha1_file(ref->old_sha1) &&
351                          ref_newer(ref->new_sha1, ref->old_sha1))
352                         info->status = PUSH_STATUS_FASTFORWARD;
353                 else
354                         info->status = PUSH_STATUS_OUTOFDATE;
355         }
356         free_refs(local_refs);
357         free_refs(push_map);
358         return 0;
359 }
360
361 static int get_push_ref_states_noquery(struct ref_states *states)
362 {
363         int i;
364         struct remote *remote = states->remote;
365         struct string_list_item *item;
366         struct push_info *info;
367
368         if (remote->mirror)
369                 return 0;
370
371         states->push.strdup_strings = 1;
372         if (!remote->push_refspec_nr) {
373                 item = string_list_append("(matching)", &states->push);
374                 info = item->util = xcalloc(sizeof(struct push_info), 1);
375                 info->status = PUSH_STATUS_NOTQUERIED;
376                 info->dest = xstrdup(item->string);
377         }
378         for (i = 0; i < remote->push_refspec_nr; i++) {
379                 struct refspec *spec = remote->push + i;
380                 if (spec->matching)
381                         item = string_list_append("(matching)", &states->push);
382                 else if (strlen(spec->src))
383                         item = string_list_append(spec->src, &states->push);
384                 else
385                         item = string_list_append("(delete)", &states->push);
386
387                 info = item->util = xcalloc(sizeof(struct push_info), 1);
388                 info->forced = spec->force;
389                 info->status = PUSH_STATUS_NOTQUERIED;
390                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
391         }
392         return 0;
393 }
394
395 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
396 {
397         struct ref *ref, *matches;
398         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
399         struct refspec refspec;
400
401         refspec.force = 0;
402         refspec.pattern = 1;
403         refspec.src = refspec.dst = "refs/heads/*";
404         states->heads.strdup_strings = 1;
405         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
406         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
407                                     fetch_map, 1);
408         for (ref = matches; ref; ref = ref->next)
409                 string_list_append(abbrev_branch(ref->name), &states->heads);
410
411         free_refs(fetch_map);
412         free_refs(matches);
413
414         return 0;
415 }
416
417 struct known_remote {
418         struct known_remote *next;
419         struct remote *remote;
420 };
421
422 struct known_remotes {
423         struct remote *to_delete;
424         struct known_remote *list;
425 };
426
427 static int add_known_remote(struct remote *remote, void *cb_data)
428 {
429         struct known_remotes *all = cb_data;
430         struct known_remote *r;
431
432         if (!strcmp(all->to_delete->name, remote->name))
433                 return 0;
434
435         r = xmalloc(sizeof(*r));
436         r->remote = remote;
437         r->next = all->list;
438         all->list = r;
439         return 0;
440 }
441
442 struct branches_for_remote {
443         struct remote *remote;
444         struct string_list *branches, *skipped;
445         struct known_remotes *keep;
446 };
447
448 static int add_branch_for_removal(const char *refname,
449         const unsigned char *sha1, int flags, void *cb_data)
450 {
451         struct branches_for_remote *branches = cb_data;
452         struct refspec refspec;
453         struct string_list_item *item;
454         struct known_remote *kr;
455
456         memset(&refspec, 0, sizeof(refspec));
457         refspec.dst = (char *)refname;
458         if (remote_find_tracking(branches->remote, &refspec))
459                 return 0;
460
461         /* don't delete a branch if another remote also uses it */
462         for (kr = branches->keep->list; kr; kr = kr->next) {
463                 memset(&refspec, 0, sizeof(refspec));
464                 refspec.dst = (char *)refname;
465                 if (!remote_find_tracking(kr->remote, &refspec))
466                         return 0;
467         }
468
469         /* don't delete non-remote refs */
470         if (prefixcmp(refname, "refs/remotes")) {
471                 /* advise user how to delete local branches */
472                 if (!prefixcmp(refname, "refs/heads/"))
473                         string_list_append(abbrev_branch(refname),
474                                            branches->skipped);
475                 /* silently skip over other non-remote refs */
476                 return 0;
477         }
478
479         /* make sure that symrefs are deleted */
480         if (flags & REF_ISSYMREF)
481                 return unlink(git_path("%s", refname));
482
483         item = string_list_append(refname, branches->branches);
484         item->util = xmalloc(20);
485         hashcpy(item->util, sha1);
486
487         return 0;
488 }
489
490 struct rename_info {
491         const char *old;
492         const char *new;
493         struct string_list *remote_branches;
494 };
495
496 static int read_remote_branches(const char *refname,
497         const unsigned char *sha1, int flags, void *cb_data)
498 {
499         struct rename_info *rename = cb_data;
500         struct strbuf buf = STRBUF_INIT;
501         struct string_list_item *item;
502         int flag;
503         unsigned char orig_sha1[20];
504         const char *symref;
505
506         strbuf_addf(&buf, "refs/remotes/%s", rename->old);
507         if (!prefixcmp(refname, buf.buf)) {
508                 item = string_list_append(xstrdup(refname), rename->remote_branches);
509                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
510                 if (flag & REF_ISSYMREF)
511                         item->util = xstrdup(symref);
512                 else
513                         item->util = NULL;
514         }
515
516         return 0;
517 }
518
519 static int migrate_file(struct remote *remote)
520 {
521         struct strbuf buf = STRBUF_INIT;
522         int i;
523         char *path = NULL;
524
525         strbuf_addf(&buf, "remote.%s.url", remote->name);
526         for (i = 0; i < remote->url_nr; i++)
527                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
528                         return error("Could not append '%s' to '%s'",
529                                         remote->url[i], buf.buf);
530         strbuf_reset(&buf);
531         strbuf_addf(&buf, "remote.%s.push", remote->name);
532         for (i = 0; i < remote->push_refspec_nr; i++)
533                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
534                         return error("Could not append '%s' to '%s'",
535                                         remote->push_refspec[i], buf.buf);
536         strbuf_reset(&buf);
537         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
538         for (i = 0; i < remote->fetch_refspec_nr; i++)
539                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
540                         return error("Could not append '%s' to '%s'",
541                                         remote->fetch_refspec[i], buf.buf);
542         if (remote->origin == REMOTE_REMOTES)
543                 path = git_path("remotes/%s", remote->name);
544         else if (remote->origin == REMOTE_BRANCHES)
545                 path = git_path("branches/%s", remote->name);
546         if (path)
547                 unlink_or_warn(path);
548         return 0;
549 }
550
551 static int mv(int argc, const char **argv)
552 {
553         struct option options[] = {
554                 OPT_END()
555         };
556         struct remote *oldremote, *newremote;
557         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
558         struct string_list remote_branches = { NULL, 0, 0, 0 };
559         struct rename_info rename;
560         int i;
561
562         if (argc != 3)
563                 usage_with_options(builtin_remote_rename_usage, options);
564
565         rename.old = argv[1];
566         rename.new = argv[2];
567         rename.remote_branches = &remote_branches;
568
569         oldremote = remote_get(rename.old);
570         if (!oldremote)
571                 die("No such remote: %s", rename.old);
572
573         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
574                 return migrate_file(oldremote);
575
576         newremote = remote_get(rename.new);
577         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
578                 die("remote %s already exists.", rename.new);
579
580         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
581         if (!valid_fetch_refspec(buf.buf))
582                 die("'%s' is not a valid remote name", rename.new);
583
584         strbuf_reset(&buf);
585         strbuf_addf(&buf, "remote.%s", rename.old);
586         strbuf_addf(&buf2, "remote.%s", rename.new);
587         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
588                 return error("Could not rename config section '%s' to '%s'",
589                                 buf.buf, buf2.buf);
590
591         strbuf_reset(&buf);
592         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
593         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
594                 return error("Could not remove config section '%s'", buf.buf);
595         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
596                 char *ptr;
597
598                 strbuf_reset(&buf2);
599                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
600                 ptr = strstr(buf2.buf, rename.old);
601                 if (ptr)
602                         strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
603                                         rename.new, strlen(rename.new));
604                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
605                         return error("Could not append '%s'", buf.buf);
606         }
607
608         read_branches();
609         for (i = 0; i < branch_list.nr; i++) {
610                 struct string_list_item *item = branch_list.items + i;
611                 struct branch_info *info = item->util;
612                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
613                         strbuf_reset(&buf);
614                         strbuf_addf(&buf, "branch.%s.remote", item->string);
615                         if (git_config_set(buf.buf, rename.new)) {
616                                 return error("Could not set '%s'", buf.buf);
617                         }
618                 }
619         }
620
621         /*
622          * First remove symrefs, then rename the rest, finally create
623          * the new symrefs.
624          */
625         for_each_ref(read_remote_branches, &rename);
626         for (i = 0; i < remote_branches.nr; i++) {
627                 struct string_list_item *item = remote_branches.items + i;
628                 int flag = 0;
629                 unsigned char sha1[20];
630
631                 resolve_ref(item->string, sha1, 1, &flag);
632                 if (!(flag & REF_ISSYMREF))
633                         continue;
634                 if (delete_ref(item->string, NULL, REF_NODEREF))
635                         die("deleting '%s' failed", item->string);
636         }
637         for (i = 0; i < remote_branches.nr; i++) {
638                 struct string_list_item *item = remote_branches.items + i;
639
640                 if (item->util)
641                         continue;
642                 strbuf_reset(&buf);
643                 strbuf_addstr(&buf, item->string);
644                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
645                                 rename.new, strlen(rename.new));
646                 strbuf_reset(&buf2);
647                 strbuf_addf(&buf2, "remote: renamed %s to %s",
648                                 item->string, buf.buf);
649                 if (rename_ref(item->string, buf.buf, buf2.buf))
650                         die("renaming '%s' failed", item->string);
651         }
652         for (i = 0; i < remote_branches.nr; i++) {
653                 struct string_list_item *item = remote_branches.items + i;
654
655                 if (!item->util)
656                         continue;
657                 strbuf_reset(&buf);
658                 strbuf_addstr(&buf, item->string);
659                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
660                                 rename.new, strlen(rename.new));
661                 strbuf_reset(&buf2);
662                 strbuf_addstr(&buf2, item->util);
663                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
664                                 rename.new, strlen(rename.new));
665                 strbuf_reset(&buf3);
666                 strbuf_addf(&buf3, "remote: renamed %s to %s",
667                                 item->string, buf.buf);
668                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
669                         die("creating '%s' failed", buf.buf);
670         }
671         return 0;
672 }
673
674 static int remove_branches(struct string_list *branches)
675 {
676         int i, result = 0;
677         for (i = 0; i < branches->nr; i++) {
678                 struct string_list_item *item = branches->items + i;
679                 const char *refname = item->string;
680                 unsigned char *sha1 = item->util;
681
682                 if (delete_ref(refname, sha1, 0))
683                         result |= error("Could not remove branch %s", refname);
684         }
685         return result;
686 }
687
688 static int rm(int argc, const char **argv)
689 {
690         struct option options[] = {
691                 OPT_END()
692         };
693         struct remote *remote;
694         struct strbuf buf = STRBUF_INIT;
695         struct known_remotes known_remotes = { NULL, NULL };
696         struct string_list branches = { NULL, 0, 0, 1 };
697         struct string_list skipped = { NULL, 0, 0, 1 };
698         struct branches_for_remote cb_data = {
699                 NULL, &branches, &skipped, &known_remotes
700         };
701         int i, result;
702
703         if (argc != 2)
704                 usage_with_options(builtin_remote_rm_usage, options);
705
706         remote = remote_get(argv[1]);
707         if (!remote)
708                 die("No such remote: %s", argv[1]);
709
710         known_remotes.to_delete = remote;
711         for_each_remote(add_known_remote, &known_remotes);
712
713         strbuf_addf(&buf, "remote.%s", remote->name);
714         if (git_config_rename_section(buf.buf, NULL) < 1)
715                 return error("Could not remove config section '%s'", buf.buf);
716
717         read_branches();
718         for (i = 0; i < branch_list.nr; i++) {
719                 struct string_list_item *item = branch_list.items + i;
720                 struct branch_info *info = item->util;
721                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
722                         const char *keys[] = { "remote", "merge", NULL }, **k;
723                         for (k = keys; *k; k++) {
724                                 strbuf_reset(&buf);
725                                 strbuf_addf(&buf, "branch.%s.%s",
726                                                 item->string, *k);
727                                 if (git_config_set(buf.buf, NULL)) {
728                                         strbuf_release(&buf);
729                                         return -1;
730                                 }
731                         }
732                 }
733         }
734
735         /*
736          * We cannot just pass a function to for_each_ref() which deletes
737          * the branches one by one, since for_each_ref() relies on cached
738          * refs, which are invalidated when deleting a branch.
739          */
740         cb_data.remote = remote;
741         result = for_each_ref(add_branch_for_removal, &cb_data);
742         strbuf_release(&buf);
743
744         if (!result)
745                 result = remove_branches(&branches);
746         string_list_clear(&branches, 1);
747
748         if (skipped.nr) {
749                 fprintf(stderr, skipped.nr == 1 ?
750                         "Note: A non-remote branch was not removed; "
751                         "to delete it, use:\n" :
752                         "Note: Non-remote branches were not removed; "
753                         "to delete them, use:\n");
754                 for (i = 0; i < skipped.nr; i++)
755                         fprintf(stderr, "  git branch -d %s\n",
756                                 skipped.items[i].string);
757         }
758         string_list_clear(&skipped, 0);
759
760         return result;
761 }
762
763 static void clear_push_info(void *util, const char *string)
764 {
765         struct push_info *info = util;
766         free(info->dest);
767         free(info);
768 }
769
770 static void free_remote_ref_states(struct ref_states *states)
771 {
772         string_list_clear(&states->new, 0);
773         string_list_clear(&states->stale, 1);
774         string_list_clear(&states->tracked, 0);
775         string_list_clear(&states->heads, 0);
776         string_list_clear_func(&states->push, clear_push_info);
777 }
778
779 static int append_ref_to_tracked_list(const char *refname,
780         const unsigned char *sha1, int flags, void *cb_data)
781 {
782         struct ref_states *states = cb_data;
783         struct refspec refspec;
784
785         if (flags & REF_ISSYMREF)
786                 return 0;
787
788         memset(&refspec, 0, sizeof(refspec));
789         refspec.dst = (char *)refname;
790         if (!remote_find_tracking(states->remote, &refspec))
791                 string_list_append(abbrev_branch(refspec.src), &states->tracked);
792
793         return 0;
794 }
795
796 static int get_remote_ref_states(const char *name,
797                                  struct ref_states *states,
798                                  int query)
799 {
800         struct transport *transport;
801         const struct ref *remote_refs;
802
803         states->remote = remote_get(name);
804         if (!states->remote)
805                 return error("No such remote: %s", name);
806
807         read_branches();
808
809         if (query) {
810                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
811                         states->remote->url[0] : NULL);
812                 remote_refs = transport_get_remote_refs(transport);
813                 transport_disconnect(transport);
814
815                 states->queried = 1;
816                 if (query & GET_REF_STATES)
817                         get_ref_states(remote_refs, states);
818                 if (query & GET_HEAD_NAMES)
819                         get_head_names(remote_refs, states);
820                 if (query & GET_PUSH_REF_STATES)
821                         get_push_ref_states(remote_refs, states);
822         } else {
823                 for_each_ref(append_ref_to_tracked_list, states);
824                 sort_string_list(&states->tracked);
825                 get_push_ref_states_noquery(states);
826         }
827
828         return 0;
829 }
830
831 struct show_info {
832         struct string_list *list;
833         struct ref_states *states;
834         int width, width2;
835         int any_rebase;
836 };
837
838 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
839 {
840         struct show_info *info = cb_data;
841         int n = strlen(item->string);
842         if (n > info->width)
843                 info->width = n;
844         string_list_insert(item->string, info->list);
845         return 0;
846 }
847
848 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
849 {
850         struct show_info *info = cb_data;
851         struct ref_states *states = info->states;
852         const char *name = item->string;
853
854         if (states->queried) {
855                 const char *fmt = "%s";
856                 const char *arg = "";
857                 if (string_list_has_string(&states->new, name)) {
858                         fmt = " new (next fetch will store in remotes/%s)";
859                         arg = states->remote->name;
860                 } else if (string_list_has_string(&states->tracked, name))
861                         arg = " tracked";
862                 else if (string_list_has_string(&states->stale, name))
863                         arg = " stale (use 'git remote prune' to remove)";
864                 else
865                         arg = " ???";
866                 printf("    %-*s", info->width, name);
867                 printf(fmt, arg);
868                 printf("\n");
869         } else
870                 printf("    %s\n", name);
871
872         return 0;
873 }
874
875 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
876 {
877         struct show_info *show_info = cb_data;
878         struct ref_states *states = show_info->states;
879         struct branch_info *branch_info = branch_item->util;
880         struct string_list_item *item;
881         int n;
882
883         if (!branch_info->merge.nr || !branch_info->remote_name ||
884             strcmp(states->remote->name, branch_info->remote_name))
885                 return 0;
886         if ((n = strlen(branch_item->string)) > show_info->width)
887                 show_info->width = n;
888         if (branch_info->rebase)
889                 show_info->any_rebase = 1;
890
891         item = string_list_insert(branch_item->string, show_info->list);
892         item->util = branch_info;
893
894         return 0;
895 }
896
897 static int show_local_info_item(struct string_list_item *item, void *cb_data)
898 {
899         struct show_info *show_info = cb_data;
900         struct branch_info *branch_info = item->util;
901         struct string_list *merge = &branch_info->merge;
902         const char *also;
903         int i;
904
905         if (branch_info->rebase && branch_info->merge.nr > 1) {
906                 error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
907                         item->string);
908                 return 0;
909         }
910
911         printf("    %-*s ", show_info->width, item->string);
912         if (branch_info->rebase) {
913                 printf("rebases onto remote %s\n", merge->items[0].string);
914                 return 0;
915         } else if (show_info->any_rebase) {
916                 printf(" merges with remote %s\n", merge->items[0].string);
917                 also = "    and with remote";
918         } else {
919                 printf("merges with remote %s\n", merge->items[0].string);
920                 also = "   and with remote";
921         }
922         for (i = 1; i < merge->nr; i++)
923                 printf("    %-*s %s %s\n", show_info->width, "", also,
924                        merge->items[i].string);
925
926         return 0;
927 }
928
929 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
930 {
931         struct show_info *show_info = cb_data;
932         struct push_info *push_info = push_item->util;
933         struct string_list_item *item;
934         int n;
935         if ((n = strlen(push_item->string)) > show_info->width)
936                 show_info->width = n;
937         if ((n = strlen(push_info->dest)) > show_info->width2)
938                 show_info->width2 = n;
939         item = string_list_append(push_item->string, show_info->list);
940         item->util = push_item->util;
941         return 0;
942 }
943
944 /*
945  * Sorting comparison for a string list that has push_info
946  * structs in its util field
947  */
948 static int cmp_string_with_push(const void *va, const void *vb)
949 {
950         const struct string_list_item *a = va;
951         const struct string_list_item *b = vb;
952         const struct push_info *a_push = a->util;
953         const struct push_info *b_push = b->util;
954         int cmp = strcmp(a->string, b->string);
955         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
956 }
957
958 static int show_push_info_item(struct string_list_item *item, void *cb_data)
959 {
960         struct show_info *show_info = cb_data;
961         struct push_info *push_info = item->util;
962         char *src = item->string, *status = NULL;
963
964         switch (push_info->status) {
965         case PUSH_STATUS_CREATE:
966                 status = "create";
967                 break;
968         case PUSH_STATUS_DELETE:
969                 status = "delete";
970                 src = "(none)";
971                 break;
972         case PUSH_STATUS_UPTODATE:
973                 status = "up to date";
974                 break;
975         case PUSH_STATUS_FASTFORWARD:
976                 status = "fast-forwardable";
977                 break;
978         case PUSH_STATUS_OUTOFDATE:
979                 status = "local out of date";
980                 break;
981         case PUSH_STATUS_NOTQUERIED:
982                 break;
983         }
984         if (status)
985                 printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
986                         push_info->forced ? "forces" : "pushes",
987                         show_info->width2, push_info->dest, status);
988         else
989                 printf("    %-*s %s to %s\n", show_info->width, src,
990                         push_info->forced ? "forces" : "pushes",
991                         push_info->dest);
992         return 0;
993 }
994
995 static int show(int argc, const char **argv)
996 {
997         int no_query = 0, result = 0, query_flag = 0;
998         struct option options[] = {
999                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
1000                 OPT_END()
1001         };
1002         struct ref_states states;
1003         struct string_list info_list = { NULL, 0, 0, 0 };
1004         struct show_info info;
1005
1006         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1007                              0);
1008
1009         if (argc < 1)
1010                 return show_all();
1011
1012         if (!no_query)
1013                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1014
1015         memset(&states, 0, sizeof(states));
1016         memset(&info, 0, sizeof(info));
1017         info.states = &states;
1018         info.list = &info_list;
1019         for (; argc; argc--, argv++) {
1020                 int i;
1021                 const char **url;
1022                 int url_nr;
1023
1024                 get_remote_ref_states(*argv, &states, query_flag);
1025
1026                 printf("* remote %s\n", *argv);
1027                 printf("  Fetch URL: %s\n", states.remote->url_nr > 0 ?
1028                         states.remote->url[0] : "(no URL)");
1029                 if (states.remote->pushurl_nr) {
1030                         url = states.remote->pushurl;
1031                         url_nr = states.remote->pushurl_nr;
1032                 } else {
1033                         url = states.remote->url;
1034                         url_nr = states.remote->url_nr;
1035                 }
1036                 for (i=0; i < url_nr; i++)
1037                         printf("  Push  URL: %s\n", url[i]);
1038                 if (!i)
1039                         printf("  Push  URL: %s\n", "(no URL)");
1040                 if (no_query)
1041                         printf("  HEAD branch: (not queried)\n");
1042                 else if (!states.heads.nr)
1043                         printf("  HEAD branch: (unknown)\n");
1044                 else if (states.heads.nr == 1)
1045                         printf("  HEAD branch: %s\n", states.heads.items[0].string);
1046                 else {
1047                         printf("  HEAD branch (remote HEAD is ambiguous,"
1048                                " may be one of the following):\n");
1049                         for (i = 0; i < states.heads.nr; i++)
1050                                 printf("    %s\n", states.heads.items[i].string);
1051                 }
1052
1053                 /* remote branch info */
1054                 info.width = 0;
1055                 for_each_string_list(add_remote_to_show_info, &states.new, &info);
1056                 for_each_string_list(add_remote_to_show_info, &states.tracked, &info);
1057                 for_each_string_list(add_remote_to_show_info, &states.stale, &info);
1058                 if (info.list->nr)
1059                         printf("  Remote branch%s:%s\n",
1060                                info.list->nr > 1 ? "es" : "",
1061                                 no_query ? " (status not queried)" : "");
1062                 for_each_string_list(show_remote_info_item, info.list, &info);
1063                 string_list_clear(info.list, 0);
1064
1065                 /* git pull info */
1066                 info.width = 0;
1067                 info.any_rebase = 0;
1068                 for_each_string_list(add_local_to_show_info, &branch_list, &info);
1069                 if (info.list->nr)
1070                         printf("  Local branch%s configured for 'git pull':\n",
1071                                info.list->nr > 1 ? "es" : "");
1072                 for_each_string_list(show_local_info_item, info.list, &info);
1073                 string_list_clear(info.list, 0);
1074
1075                 /* git push info */
1076                 if (states.remote->mirror)
1077                         printf("  Local refs will be mirrored by 'git push'\n");
1078
1079                 info.width = info.width2 = 0;
1080                 for_each_string_list(add_push_to_show_info, &states.push, &info);
1081                 qsort(info.list->items, info.list->nr,
1082                         sizeof(*info.list->items), cmp_string_with_push);
1083                 if (info.list->nr)
1084                         printf("  Local ref%s configured for 'git push'%s:\n",
1085                                 info.list->nr > 1 ? "s" : "",
1086                                 no_query ? " (status not queried)" : "");
1087                 for_each_string_list(show_push_info_item, info.list, &info);
1088                 string_list_clear(info.list, 0);
1089
1090                 free_remote_ref_states(&states);
1091         }
1092
1093         return result;
1094 }
1095
1096 static int set_head(int argc, const char **argv)
1097 {
1098         int i, opt_a = 0, opt_d = 0, result = 0;
1099         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1100         char *head_name = NULL;
1101
1102         struct option options[] = {
1103                 OPT_BOOLEAN('a', "auto", &opt_a,
1104                             "set refs/remotes/<name>/HEAD according to remote"),
1105                 OPT_BOOLEAN('d', "delete", &opt_d,
1106                             "delete refs/remotes/<name>/HEAD"),
1107                 OPT_END()
1108         };
1109         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1110                              0);
1111         if (argc)
1112                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1113
1114         if (!opt_a && !opt_d && argc == 2) {
1115                 head_name = xstrdup(argv[1]);
1116         } else if (opt_a && !opt_d && argc == 1) {
1117                 struct ref_states states;
1118                 memset(&states, 0, sizeof(states));
1119                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1120                 if (!states.heads.nr)
1121                         result |= error("Cannot determine remote HEAD");
1122                 else if (states.heads.nr > 1) {
1123                         result |= error("Multiple remote HEAD branches. "
1124                                         "Please choose one explicitly with:");
1125                         for (i = 0; i < states.heads.nr; i++)
1126                                 fprintf(stderr, "  git remote set-head %s %s\n",
1127                                         argv[0], states.heads.items[i].string);
1128                 } else
1129                         head_name = xstrdup(states.heads.items[0].string);
1130                 free_remote_ref_states(&states);
1131         } else if (opt_d && !opt_a && argc == 1) {
1132                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1133                         result |= error("Could not delete %s", buf.buf);
1134         } else
1135                 usage_with_options(builtin_remote_sethead_usage, options);
1136
1137         if (head_name) {
1138                 unsigned char sha1[20];
1139                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1140                 /* make sure it's valid */
1141                 if (!resolve_ref(buf2.buf, sha1, 1, NULL))
1142                         result |= error("Not a valid ref: %s", buf2.buf);
1143                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1144                         result |= error("Could not setup %s", buf.buf);
1145                 if (opt_a)
1146                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1147                 free(head_name);
1148         }
1149
1150         strbuf_release(&buf);
1151         strbuf_release(&buf2);
1152         return result;
1153 }
1154
1155 static int prune(int argc, const char **argv)
1156 {
1157         int dry_run = 0, result = 0;
1158         struct option options[] = {
1159                 OPT__DRY_RUN(&dry_run),
1160                 OPT_END()
1161         };
1162
1163         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1164                              0);
1165
1166         if (argc < 1)
1167                 usage_with_options(builtin_remote_prune_usage, options);
1168
1169         for (; argc; argc--, argv++)
1170                 result |= prune_remote(*argv, dry_run);
1171
1172         return result;
1173 }
1174
1175 static int prune_remote(const char *remote, int dry_run)
1176 {
1177         int result = 0, i;
1178         struct ref_states states;
1179         const char *dangling_msg = dry_run
1180                 ? " %s will become dangling!\n"
1181                 : " %s has become dangling!\n";
1182
1183         memset(&states, 0, sizeof(states));
1184         get_remote_ref_states(remote, &states, GET_REF_STATES);
1185
1186         if (states.stale.nr) {
1187                 printf("Pruning %s\n", remote);
1188                 printf("URL: %s\n",
1189                        states.remote->url_nr
1190                        ? states.remote->url[0]
1191                        : "(no URL)");
1192         }
1193
1194         for (i = 0; i < states.stale.nr; i++) {
1195                 const char *refname = states.stale.items[i].util;
1196
1197                 if (!dry_run)
1198                         result |= delete_ref(refname, NULL, 0);
1199
1200                 printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1201                        abbrev_ref(refname, "refs/remotes/"));
1202                 warn_dangling_symref(stdout, dangling_msg, refname);
1203         }
1204
1205         free_remote_ref_states(&states);
1206         return result;
1207 }
1208
1209 static int get_remote_default(const char *key, const char *value, void *priv)
1210 {
1211         if (strcmp(key, "remotes.default") == 0) {
1212                 int *found = priv;
1213                 *found = 1;
1214         }
1215         return 0;
1216 }
1217
1218 static int update(int argc, const char **argv)
1219 {
1220         int i, prune = 0;
1221         struct option options[] = {
1222                 OPT_BOOLEAN('p', "prune", &prune,
1223                             "prune remotes after fetching"),
1224                 OPT_END()
1225         };
1226         const char **fetch_argv;
1227         int fetch_argc = 0;
1228         int default_defined = 0;
1229
1230         fetch_argv = xmalloc(sizeof(char *) * (argc+5));
1231
1232         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1233                              PARSE_OPT_KEEP_ARGV0);
1234
1235         fetch_argv[fetch_argc++] = "fetch";
1236
1237         if (prune)
1238                 fetch_argv[fetch_argc++] = "--prune";
1239         if (verbose)
1240                 fetch_argv[fetch_argc++] = "-v";
1241         fetch_argv[fetch_argc++] = "--multiple";
1242         if (argc < 2)
1243                 fetch_argv[fetch_argc++] = "default";
1244         for (i = 1; i < argc; i++)
1245                 fetch_argv[fetch_argc++] = argv[i];
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 }