Merge branch 'da/pretty-tempname'
[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 show [-n] <name>",
17         "git remote prune [-n | --dry-run] <name>",
18         "git remote [-v | --verbose] update [-p | --prune] [group]",
19         NULL
20 };
21
22 #define GET_REF_STATES (1<<0)
23 #define GET_HEAD_NAMES (1<<1)
24 #define GET_PUSH_REF_STATES (1<<2)
25
26 static int verbose;
27
28 static int show_all(void);
29 static int prune_remote(const char *remote, int dry_run);
30
31 static inline int postfixcmp(const char *string, const char *postfix)
32 {
33         int len1 = strlen(string), len2 = strlen(postfix);
34         if (len1 < len2)
35                 return 1;
36         return strcmp(string + len1 - len2, postfix);
37 }
38
39 static int opt_parse_track(const struct option *opt, const char *arg, int not)
40 {
41         struct string_list *list = opt->value;
42         if (not)
43                 string_list_clear(list, 0);
44         else
45                 string_list_append(arg, list);
46         return 0;
47 }
48
49 static int fetch_remote(const char *name)
50 {
51         const char *argv[] = { "fetch", name, NULL, NULL };
52         if (verbose) {
53                 argv[1] = "-v";
54                 argv[2] = name;
55         }
56         printf("Updating %s\n", name);
57         if (run_command_v_opt(argv, RUN_GIT_CMD))
58                 return error("Could not fetch %s", name);
59         return 0;
60 }
61
62 static int add(int argc, const char **argv)
63 {
64         int fetch = 0, mirror = 0;
65         struct string_list track = { NULL, 0, 0 };
66         const char *master = NULL;
67         struct remote *remote;
68         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
69         const char *name, *url;
70         int i;
71
72         struct option options[] = {
73                 OPT_GROUP("add specific options"),
74                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
75                 OPT_CALLBACK('t', "track", &track, "branch",
76                         "branch(es) to track", opt_parse_track),
77                 OPT_STRING('m', "master", &master, "branch", "master branch"),
78                 OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
79                 OPT_END()
80         };
81
82         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
83                              0);
84
85         if (argc < 2)
86                 usage_with_options(builtin_remote_usage, options);
87
88         name = argv[0];
89         url = argv[1];
90
91         remote = remote_get(name);
92         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
93                         remote->fetch_refspec_nr))
94                 die("remote %s already exists.", name);
95
96         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
97         if (!valid_fetch_refspec(buf2.buf))
98                 die("'%s' is not a valid remote name", name);
99
100         strbuf_addf(&buf, "remote.%s.url", name);
101         if (git_config_set(buf.buf, url))
102                 return 1;
103
104         strbuf_reset(&buf);
105         strbuf_addf(&buf, "remote.%s.fetch", name);
106
107         if (track.nr == 0)
108                 string_list_append("*", &track);
109         for (i = 0; i < track.nr; i++) {
110                 struct string_list_item *item = track.items + i;
111
112                 strbuf_reset(&buf2);
113                 strbuf_addch(&buf2, '+');
114                 if (mirror)
115                         strbuf_addf(&buf2, "refs/%s:refs/%s",
116                                         item->string, item->string);
117                 else
118                         strbuf_addf(&buf2, "refs/heads/%s:refs/remotes/%s/%s",
119                                         item->string, name, item->string);
120                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
121                         return 1;
122         }
123
124         if (mirror) {
125                 strbuf_reset(&buf);
126                 strbuf_addf(&buf, "remote.%s.mirror", name);
127                 if (git_config_set(buf.buf, "true"))
128                         return 1;
129         }
130
131         if (fetch && fetch_remote(name))
132                 return 1;
133
134         if (master) {
135                 strbuf_reset(&buf);
136                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
137
138                 strbuf_reset(&buf2);
139                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
140
141                 if (create_symref(buf.buf, buf2.buf, "remote add"))
142                         return error("Could not setup master '%s'", master);
143         }
144
145         strbuf_release(&buf);
146         strbuf_release(&buf2);
147         string_list_clear(&track, 0);
148
149         return 0;
150 }
151
152 struct branch_info {
153         char *remote_name;
154         struct string_list merge;
155         int rebase;
156 };
157
158 static struct string_list branch_list;
159
160 static const char *abbrev_ref(const char *name, const char *prefix)
161 {
162         const char *abbrev = skip_prefix(name, prefix);
163         if (abbrev)
164                 return abbrev;
165         return name;
166 }
167 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
168
169 static int config_read_branches(const char *key, const char *value, void *cb)
170 {
171         if (!prefixcmp(key, "branch.")) {
172                 const char *orig_key = key;
173                 char *name;
174                 struct string_list_item *item;
175                 struct branch_info *info;
176                 enum { REMOTE, MERGE, REBASE } type;
177
178                 key += 7;
179                 if (!postfixcmp(key, ".remote")) {
180                         name = xstrndup(key, strlen(key) - 7);
181                         type = REMOTE;
182                 } else if (!postfixcmp(key, ".merge")) {
183                         name = xstrndup(key, strlen(key) - 6);
184                         type = MERGE;
185                 } else if (!postfixcmp(key, ".rebase")) {
186                         name = xstrndup(key, strlen(key) - 7);
187                         type = REBASE;
188                 } else
189                         return 0;
190
191                 item = string_list_insert(name, &branch_list);
192
193                 if (!item->util)
194                         item->util = xcalloc(sizeof(struct branch_info), 1);
195                 info = item->util;
196                 if (type == REMOTE) {
197                         if (info->remote_name)
198                                 warning("more than one %s", orig_key);
199                         info->remote_name = xstrdup(value);
200                 } else if (type == MERGE) {
201                         char *space = strchr(value, ' ');
202                         value = abbrev_branch(value);
203                         while (space) {
204                                 char *merge;
205                                 merge = xstrndup(value, space - value);
206                                 string_list_append(merge, &info->merge);
207                                 value = abbrev_branch(space + 1);
208                                 space = strchr(value, ' ');
209                         }
210                         string_list_append(xstrdup(value), &info->merge);
211                 } else
212                         info->rebase = git_config_bool(orig_key, value);
213         }
214         return 0;
215 }
216
217 static void read_branches(void)
218 {
219         if (branch_list.nr)
220                 return;
221         git_config(config_read_branches, NULL);
222 }
223
224 struct ref_states {
225         struct remote *remote;
226         struct string_list new, stale, tracked, heads, push;
227         int queried;
228 };
229
230 static int handle_one_branch(const char *refname,
231         const unsigned char *sha1, int flags, void *cb_data)
232 {
233         struct ref_states *states = cb_data;
234         struct refspec refspec;
235
236         memset(&refspec, 0, sizeof(refspec));
237         refspec.dst = (char *)refname;
238         if (!remote_find_tracking(states->remote, &refspec)) {
239                 struct string_list_item *item;
240                 const char *name = abbrev_branch(refspec.src);
241                 /* symbolic refs pointing nowhere were handled already */
242                 if ((flags & REF_ISSYMREF) ||
243                     string_list_has_string(&states->tracked, name) ||
244                     string_list_has_string(&states->new, name))
245                         return 0;
246                 item = string_list_append(name, &states->stale);
247                 item->util = xstrdup(refname);
248         }
249         return 0;
250 }
251
252 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
253 {
254         struct ref *fetch_map = NULL, **tail = &fetch_map;
255         struct ref *ref;
256         int i;
257
258         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
259                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
260                         die("Could not get fetch map for refspec %s",
261                                 states->remote->fetch_refspec[i]);
262
263         states->new.strdup_strings = states->tracked.strdup_strings = 1;
264         for (ref = fetch_map; ref; ref = ref->next) {
265                 unsigned char sha1[20];
266                 if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
267                         string_list_append(abbrev_branch(ref->name), &states->new);
268                 else
269                         string_list_append(abbrev_branch(ref->name), &states->tracked);
270         }
271         free_refs(fetch_map);
272
273         sort_string_list(&states->new);
274         sort_string_list(&states->tracked);
275         for_each_ref(handle_one_branch, states);
276         sort_string_list(&states->stale);
277
278         return 0;
279 }
280
281 struct push_info {
282         char *dest;
283         int forced;
284         enum {
285                 PUSH_STATUS_CREATE = 0,
286                 PUSH_STATUS_DELETE,
287                 PUSH_STATUS_UPTODATE,
288                 PUSH_STATUS_FASTFORWARD,
289                 PUSH_STATUS_OUTOFDATE,
290                 PUSH_STATUS_NOTQUERIED,
291         } status;
292 };
293
294 static int get_push_ref_states(const struct ref *remote_refs,
295         struct ref_states *states)
296 {
297         struct remote *remote = states->remote;
298         struct ref *ref, *local_refs, *push_map, **push_tail;
299         if (remote->mirror)
300                 return 0;
301
302         local_refs = get_local_heads();
303         push_map = copy_ref_list(remote_refs);
304
305         push_tail = &push_map;
306         while (*push_tail)
307                 push_tail = &((*push_tail)->next);
308         match_refs(local_refs, push_map, &push_tail, remote->push_refspec_nr,
309                    remote->push_refspec, MATCH_REFS_NONE);
310
311         states->push.strdup_strings = 1;
312         for (ref = push_map; ref; ref = ref->next) {
313                 struct string_list_item *item;
314                 struct push_info *info;
315
316                 if (!ref->peer_ref)
317                         continue;
318                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
319
320                 item = string_list_append(abbrev_branch(ref->peer_ref->name),
321                                           &states->push);
322                 item->util = xcalloc(sizeof(struct push_info), 1);
323                 info = item->util;
324                 info->forced = ref->force;
325                 info->dest = xstrdup(abbrev_branch(ref->name));
326
327                 if (is_null_sha1(ref->new_sha1)) {
328                         info->status = PUSH_STATUS_DELETE;
329                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
330                         info->status = PUSH_STATUS_UPTODATE;
331                 else if (is_null_sha1(ref->old_sha1))
332                         info->status = PUSH_STATUS_CREATE;
333                 else if (has_sha1_file(ref->old_sha1) &&
334                          ref_newer(ref->new_sha1, ref->old_sha1))
335                         info->status = PUSH_STATUS_FASTFORWARD;
336                 else
337                         info->status = PUSH_STATUS_OUTOFDATE;
338         }
339         free_refs(local_refs);
340         free_refs(push_map);
341         return 0;
342 }
343
344 static int get_push_ref_states_noquery(struct ref_states *states)
345 {
346         int i;
347         struct remote *remote = states->remote;
348         struct string_list_item *item;
349         struct push_info *info;
350
351         if (remote->mirror)
352                 return 0;
353
354         states->push.strdup_strings = 1;
355         if (!remote->push_refspec_nr) {
356                 item = string_list_append("(matching)", &states->push);
357                 info = item->util = xcalloc(sizeof(struct push_info), 1);
358                 info->status = PUSH_STATUS_NOTQUERIED;
359                 info->dest = xstrdup(item->string);
360         }
361         for (i = 0; i < remote->push_refspec_nr; i++) {
362                 struct refspec *spec = remote->push + i;
363                 if (spec->matching)
364                         item = string_list_append("(matching)", &states->push);
365                 else if (strlen(spec->src))
366                         item = string_list_append(spec->src, &states->push);
367                 else
368                         item = string_list_append("(delete)", &states->push);
369
370                 info = item->util = xcalloc(sizeof(struct push_info), 1);
371                 info->forced = spec->force;
372                 info->status = PUSH_STATUS_NOTQUERIED;
373                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
374         }
375         return 0;
376 }
377
378 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
379 {
380         struct ref *ref, *matches;
381         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
382         struct refspec refspec;
383
384         refspec.force = 0;
385         refspec.pattern = 1;
386         refspec.src = refspec.dst = "refs/heads/*";
387         states->heads.strdup_strings = 1;
388         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
389         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
390                                     fetch_map, 1);
391         for(ref = matches; ref; ref = ref->next)
392                 string_list_append(abbrev_branch(ref->name), &states->heads);
393
394         free_refs(fetch_map);
395         free_refs(matches);
396
397         return 0;
398 }
399
400 struct known_remote {
401         struct known_remote *next;
402         struct remote *remote;
403 };
404
405 struct known_remotes {
406         struct remote *to_delete;
407         struct known_remote *list;
408 };
409
410 static int add_known_remote(struct remote *remote, void *cb_data)
411 {
412         struct known_remotes *all = cb_data;
413         struct known_remote *r;
414
415         if (!strcmp(all->to_delete->name, remote->name))
416                 return 0;
417
418         r = xmalloc(sizeof(*r));
419         r->remote = remote;
420         r->next = all->list;
421         all->list = r;
422         return 0;
423 }
424
425 struct branches_for_remote {
426         struct remote *remote;
427         struct string_list *branches, *skipped;
428         struct known_remotes *keep;
429 };
430
431 static int add_branch_for_removal(const char *refname,
432         const unsigned char *sha1, int flags, void *cb_data)
433 {
434         struct branches_for_remote *branches = cb_data;
435         struct refspec refspec;
436         struct string_list_item *item;
437         struct known_remote *kr;
438
439         memset(&refspec, 0, sizeof(refspec));
440         refspec.dst = (char *)refname;
441         if (remote_find_tracking(branches->remote, &refspec))
442                 return 0;
443
444         /* don't delete a branch if another remote also uses it */
445         for (kr = branches->keep->list; kr; kr = kr->next) {
446                 memset(&refspec, 0, sizeof(refspec));
447                 refspec.dst = (char *)refname;
448                 if (!remote_find_tracking(kr->remote, &refspec))
449                         return 0;
450         }
451
452         /* don't delete non-remote refs */
453         if (prefixcmp(refname, "refs/remotes")) {
454                 /* advise user how to delete local branches */
455                 if (!prefixcmp(refname, "refs/heads/"))
456                         string_list_append(abbrev_branch(refname),
457                                            branches->skipped);
458                 /* silently skip over other non-remote refs */
459                 return 0;
460         }
461
462         /* make sure that symrefs are deleted */
463         if (flags & REF_ISSYMREF)
464                 return unlink(git_path("%s", refname));
465
466         item = string_list_append(refname, branches->branches);
467         item->util = xmalloc(20);
468         hashcpy(item->util, sha1);
469
470         return 0;
471 }
472
473 struct rename_info {
474         const char *old;
475         const char *new;
476         struct string_list *remote_branches;
477 };
478
479 static int read_remote_branches(const char *refname,
480         const unsigned char *sha1, int flags, void *cb_data)
481 {
482         struct rename_info *rename = cb_data;
483         struct strbuf buf = STRBUF_INIT;
484         struct string_list_item *item;
485         int flag;
486         unsigned char orig_sha1[20];
487         const char *symref;
488
489         strbuf_addf(&buf, "refs/remotes/%s", rename->old);
490         if(!prefixcmp(refname, buf.buf)) {
491                 item = string_list_append(xstrdup(refname), rename->remote_branches);
492                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
493                 if (flag & REF_ISSYMREF)
494                         item->util = xstrdup(symref);
495                 else
496                         item->util = NULL;
497         }
498
499         return 0;
500 }
501
502 static int migrate_file(struct remote *remote)
503 {
504         struct strbuf buf = STRBUF_INIT;
505         int i;
506         char *path = NULL;
507
508         strbuf_addf(&buf, "remote.%s.url", remote->name);
509         for (i = 0; i < remote->url_nr; i++)
510                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
511                         return error("Could not append '%s' to '%s'",
512                                         remote->url[i], buf.buf);
513         strbuf_reset(&buf);
514         strbuf_addf(&buf, "remote.%s.push", remote->name);
515         for (i = 0; i < remote->push_refspec_nr; i++)
516                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
517                         return error("Could not append '%s' to '%s'",
518                                         remote->push_refspec[i], buf.buf);
519         strbuf_reset(&buf);
520         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
521         for (i = 0; i < remote->fetch_refspec_nr; i++)
522                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
523                         return error("Could not append '%s' to '%s'",
524                                         remote->fetch_refspec[i], buf.buf);
525         if (remote->origin == REMOTE_REMOTES)
526                 path = git_path("remotes/%s", remote->name);
527         else if (remote->origin == REMOTE_BRANCHES)
528                 path = git_path("branches/%s", remote->name);
529         if (path)
530                 unlink_or_warn(path);
531         return 0;
532 }
533
534 static int mv(int argc, const char **argv)
535 {
536         struct option options[] = {
537                 OPT_END()
538         };
539         struct remote *oldremote, *newremote;
540         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
541         struct string_list remote_branches = { NULL, 0, 0, 0 };
542         struct rename_info rename;
543         int i;
544
545         if (argc != 3)
546                 usage_with_options(builtin_remote_usage, options);
547
548         rename.old = argv[1];
549         rename.new = argv[2];
550         rename.remote_branches = &remote_branches;
551
552         oldremote = remote_get(rename.old);
553         if (!oldremote)
554                 die("No such remote: %s", rename.old);
555
556         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
557                 return migrate_file(oldremote);
558
559         newremote = remote_get(rename.new);
560         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
561                 die("remote %s already exists.", rename.new);
562
563         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
564         if (!valid_fetch_refspec(buf.buf))
565                 die("'%s' is not a valid remote name", rename.new);
566
567         strbuf_reset(&buf);
568         strbuf_addf(&buf, "remote.%s", rename.old);
569         strbuf_addf(&buf2, "remote.%s", rename.new);
570         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
571                 return error("Could not rename config section '%s' to '%s'",
572                                 buf.buf, buf2.buf);
573
574         strbuf_reset(&buf);
575         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
576         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
577                 return error("Could not remove config section '%s'", buf.buf);
578         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
579                 char *ptr;
580
581                 strbuf_reset(&buf2);
582                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
583                 ptr = strstr(buf2.buf, rename.old);
584                 if (ptr)
585                         strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
586                                         rename.new, strlen(rename.new));
587                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
588                         return error("Could not append '%s'", buf.buf);
589         }
590
591         read_branches();
592         for (i = 0; i < branch_list.nr; i++) {
593                 struct string_list_item *item = branch_list.items + i;
594                 struct branch_info *info = item->util;
595                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
596                         strbuf_reset(&buf);
597                         strbuf_addf(&buf, "branch.%s.remote", item->string);
598                         if (git_config_set(buf.buf, rename.new)) {
599                                 return error("Could not set '%s'", buf.buf);
600                         }
601                 }
602         }
603
604         /*
605          * First remove symrefs, then rename the rest, finally create
606          * the new symrefs.
607          */
608         for_each_ref(read_remote_branches, &rename);
609         for (i = 0; i < remote_branches.nr; i++) {
610                 struct string_list_item *item = remote_branches.items + i;
611                 int flag = 0;
612                 unsigned char sha1[20];
613
614                 resolve_ref(item->string, sha1, 1, &flag);
615                 if (!(flag & REF_ISSYMREF))
616                         continue;
617                 if (delete_ref(item->string, NULL, REF_NODEREF))
618                         die("deleting '%s' failed", item->string);
619         }
620         for (i = 0; i < remote_branches.nr; i++) {
621                 struct string_list_item *item = remote_branches.items + i;
622
623                 if (item->util)
624                         continue;
625                 strbuf_reset(&buf);
626                 strbuf_addstr(&buf, item->string);
627                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
628                                 rename.new, strlen(rename.new));
629                 strbuf_reset(&buf2);
630                 strbuf_addf(&buf2, "remote: renamed %s to %s",
631                                 item->string, buf.buf);
632                 if (rename_ref(item->string, buf.buf, buf2.buf))
633                         die("renaming '%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_addstr(&buf2, item->util);
646                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
647                                 rename.new, strlen(rename.new));
648                 strbuf_reset(&buf3);
649                 strbuf_addf(&buf3, "remote: renamed %s to %s",
650                                 item->string, buf.buf);
651                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
652                         die("creating '%s' failed", buf.buf);
653         }
654         return 0;
655 }
656
657 static int remove_branches(struct string_list *branches)
658 {
659         int i, result = 0;
660         for (i = 0; i < branches->nr; i++) {
661                 struct string_list_item *item = branches->items + i;
662                 const char *refname = item->string;
663                 unsigned char *sha1 = item->util;
664
665                 if (delete_ref(refname, sha1, 0))
666                         result |= error("Could not remove branch %s", refname);
667         }
668         return result;
669 }
670
671 static int rm(int argc, const char **argv)
672 {
673         struct option options[] = {
674                 OPT_END()
675         };
676         struct remote *remote;
677         struct strbuf buf = STRBUF_INIT;
678         struct known_remotes known_remotes = { NULL, NULL };
679         struct string_list branches = { NULL, 0, 0, 1 };
680         struct string_list skipped = { NULL, 0, 0, 1 };
681         struct branches_for_remote cb_data = {
682                 NULL, &branches, &skipped, &known_remotes
683         };
684         int i, result;
685
686         if (argc != 2)
687                 usage_with_options(builtin_remote_usage, options);
688
689         remote = remote_get(argv[1]);
690         if (!remote)
691                 die("No such remote: %s", argv[1]);
692
693         known_remotes.to_delete = remote;
694         for_each_remote(add_known_remote, &known_remotes);
695
696         strbuf_addf(&buf, "remote.%s", remote->name);
697         if (git_config_rename_section(buf.buf, NULL) < 1)
698                 return error("Could not remove config section '%s'", buf.buf);
699
700         read_branches();
701         for (i = 0; i < branch_list.nr; i++) {
702                 struct string_list_item *item = branch_list.items + i;
703                 struct branch_info *info = item->util;
704                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
705                         const char *keys[] = { "remote", "merge", NULL }, **k;
706                         for (k = keys; *k; k++) {
707                                 strbuf_reset(&buf);
708                                 strbuf_addf(&buf, "branch.%s.%s",
709                                                 item->string, *k);
710                                 if (git_config_set(buf.buf, NULL)) {
711                                         strbuf_release(&buf);
712                                         return -1;
713                                 }
714                         }
715                 }
716         }
717
718         /*
719          * We cannot just pass a function to for_each_ref() which deletes
720          * the branches one by one, since for_each_ref() relies on cached
721          * refs, which are invalidated when deleting a branch.
722          */
723         cb_data.remote = remote;
724         result = for_each_ref(add_branch_for_removal, &cb_data);
725         strbuf_release(&buf);
726
727         if (!result)
728                 result = remove_branches(&branches);
729         string_list_clear(&branches, 1);
730
731         if (skipped.nr) {
732                 fprintf(stderr, skipped.nr == 1 ?
733                         "Note: A non-remote branch was not removed; "
734                         "to delete it, use:\n" :
735                         "Note: Non-remote branches were not removed; "
736                         "to delete them, use:\n");
737                 for (i = 0; i < skipped.nr; i++)
738                         fprintf(stderr, "  git branch -d %s\n",
739                                 skipped.items[i].string);
740         }
741         string_list_clear(&skipped, 0);
742
743         return result;
744 }
745
746 void clear_push_info(void *util, const char *string)
747 {
748         struct push_info *info = util;
749         free(info->dest);
750         free(info);
751 }
752
753 static void free_remote_ref_states(struct ref_states *states)
754 {
755         string_list_clear(&states->new, 0);
756         string_list_clear(&states->stale, 0);
757         string_list_clear(&states->tracked, 0);
758         string_list_clear(&states->heads, 0);
759         string_list_clear_func(&states->push, clear_push_info);
760 }
761
762 static int append_ref_to_tracked_list(const char *refname,
763         const unsigned char *sha1, int flags, void *cb_data)
764 {
765         struct ref_states *states = cb_data;
766         struct refspec refspec;
767
768         if (flags & REF_ISSYMREF)
769                 return 0;
770
771         memset(&refspec, 0, sizeof(refspec));
772         refspec.dst = (char *)refname;
773         if (!remote_find_tracking(states->remote, &refspec))
774                 string_list_append(abbrev_branch(refspec.src), &states->tracked);
775
776         return 0;
777 }
778
779 static int get_remote_ref_states(const char *name,
780                                  struct ref_states *states,
781                                  int query)
782 {
783         struct transport *transport;
784         const struct ref *remote_refs;
785
786         states->remote = remote_get(name);
787         if (!states->remote)
788                 return error("No such remote: %s", name);
789
790         read_branches();
791
792         if (query) {
793                 transport = transport_get(NULL, states->remote->url_nr > 0 ?
794                         states->remote->url[0] : NULL);
795                 remote_refs = transport_get_remote_refs(transport);
796                 transport_disconnect(transport);
797
798                 states->queried = 1;
799                 if (query & GET_REF_STATES)
800                         get_ref_states(remote_refs, states);
801                 if (query & GET_HEAD_NAMES)
802                         get_head_names(remote_refs, states);
803                 if (query & GET_PUSH_REF_STATES)
804                         get_push_ref_states(remote_refs, states);
805         } else {
806                 for_each_ref(append_ref_to_tracked_list, states);
807                 sort_string_list(&states->tracked);
808                 get_push_ref_states_noquery(states);
809         }
810
811         return 0;
812 }
813
814 struct show_info {
815         struct string_list *list;
816         struct ref_states *states;
817         int width, width2;
818         int any_rebase;
819 };
820
821 int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
822 {
823         struct show_info *info = cb_data;
824         int n = strlen(item->string);
825         if (n > info->width)
826                 info->width = n;
827         string_list_insert(item->string, info->list);
828         return 0;
829 }
830
831 int show_remote_info_item(struct string_list_item *item, void *cb_data)
832 {
833         struct show_info *info = cb_data;
834         struct ref_states *states = info->states;
835         const char *name = item->string;
836
837         if (states->queried) {
838                 const char *fmt = "%s";
839                 const char *arg = "";
840                 if (string_list_has_string(&states->new, name)) {
841                         fmt = " new (next fetch will store in remotes/%s)";
842                         arg = states->remote->name;
843                 } else if (string_list_has_string(&states->tracked, name))
844                         arg = " tracked";
845                 else if (string_list_has_string(&states->stale, name))
846                         arg = " stale (use 'git remote prune' to remove)";
847                 else
848                         arg = " ???";
849                 printf("    %-*s", info->width, name);
850                 printf(fmt, arg);
851                 printf("\n");
852         } else
853                 printf("    %s\n", name);
854
855         return 0;
856 }
857
858 int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
859 {
860         struct show_info *show_info = cb_data;
861         struct ref_states *states = show_info->states;
862         struct branch_info *branch_info = branch_item->util;
863         struct string_list_item *item;
864         int n;
865
866         if (!branch_info->merge.nr || !branch_info->remote_name ||
867             strcmp(states->remote->name, branch_info->remote_name))
868                 return 0;
869         if ((n = strlen(branch_item->string)) > show_info->width)
870                 show_info->width = n;
871         if (branch_info->rebase)
872                 show_info->any_rebase = 1;
873
874         item = string_list_insert(branch_item->string, show_info->list);
875         item->util = branch_info;
876
877         return 0;
878 }
879
880 int show_local_info_item(struct string_list_item *item, void *cb_data)
881 {
882         struct show_info *show_info = cb_data;
883         struct branch_info *branch_info = item->util;
884         struct string_list *merge = &branch_info->merge;
885         const char *also;
886         int i;
887
888         if (branch_info->rebase && branch_info->merge.nr > 1) {
889                 error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
890                         item->string);
891                 return 0;
892         }
893
894         printf("    %-*s ", show_info->width, item->string);
895         if (branch_info->rebase) {
896                 printf("rebases onto remote %s\n", merge->items[0].string);
897                 return 0;
898         } else if (show_info->any_rebase) {
899                 printf(" merges with remote %s\n", merge->items[0].string);
900                 also = "    and with remote";
901         } else {
902                 printf("merges with remote %s\n", merge->items[0].string);
903                 also = "   and with remote";
904         }
905         for (i = 1; i < merge->nr; i++)
906                 printf("    %-*s %s %s\n", show_info->width, "", also,
907                        merge->items[i].string);
908
909         return 0;
910 }
911
912 int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
913 {
914         struct show_info *show_info = cb_data;
915         struct push_info *push_info = push_item->util;
916         struct string_list_item *item;
917         int n;
918         if ((n = strlen(push_item->string)) > show_info->width)
919                 show_info->width = n;
920         if ((n = strlen(push_info->dest)) > show_info->width2)
921                 show_info->width2 = n;
922         item = string_list_append(push_item->string, show_info->list);
923         item->util = push_item->util;
924         return 0;
925 }
926
927 /*
928  * Sorting comparison for a string list that has push_info
929  * structs in its util field
930  */
931 static int cmp_string_with_push(const void *va, const void *vb)
932 {
933         const struct string_list_item *a = va;
934         const struct string_list_item *b = vb;
935         const struct push_info *a_push = a->util;
936         const struct push_info *b_push = b->util;
937         int cmp = strcmp(a->string, b->string);
938         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
939 }
940
941 int show_push_info_item(struct string_list_item *item, void *cb_data)
942 {
943         struct show_info *show_info = cb_data;
944         struct push_info *push_info = item->util;
945         char *src = item->string, *status = NULL;
946
947         switch (push_info->status) {
948         case PUSH_STATUS_CREATE:
949                 status = "create";
950                 break;
951         case PUSH_STATUS_DELETE:
952                 status = "delete";
953                 src = "(none)";
954                 break;
955         case PUSH_STATUS_UPTODATE:
956                 status = "up to date";
957                 break;
958         case PUSH_STATUS_FASTFORWARD:
959                 status = "fast forwardable";
960                 break;
961         case PUSH_STATUS_OUTOFDATE:
962                 status = "local out of date";
963                 break;
964         case PUSH_STATUS_NOTQUERIED:
965                 break;
966         }
967         if (status)
968                 printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
969                         push_info->forced ? "forces" : "pushes",
970                         show_info->width2, push_info->dest, status);
971         else
972                 printf("    %-*s %s to %s\n", show_info->width, src,
973                         push_info->forced ? "forces" : "pushes",
974                         push_info->dest);
975         return 0;
976 }
977
978 static int show(int argc, const char **argv)
979 {
980         int no_query = 0, result = 0, query_flag = 0;
981         struct option options[] = {
982                 OPT_GROUP("show specific options"),
983                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
984                 OPT_END()
985         };
986         struct ref_states states;
987         struct string_list info_list = { NULL, 0, 0, 0 };
988         struct show_info info;
989
990         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
991                              0);
992
993         if (argc < 1)
994                 return show_all();
995
996         if (!no_query)
997                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
998
999         memset(&states, 0, sizeof(states));
1000         memset(&info, 0, sizeof(info));
1001         info.states = &states;
1002         info.list = &info_list;
1003         for (; argc; argc--, argv++) {
1004                 int i;
1005
1006                 get_remote_ref_states(*argv, &states, query_flag);
1007
1008                 printf("* remote %s\n  URL: %s\n", *argv,
1009                         states.remote->url_nr > 0 ?
1010                                 states.remote->url[0] : "(no URL)");
1011                 if (no_query)
1012                         printf("  HEAD branch: (not queried)\n");
1013                 else if (!states.heads.nr)
1014                         printf("  HEAD branch: (unknown)\n");
1015                 else if (states.heads.nr == 1)
1016                         printf("  HEAD branch: %s\n", states.heads.items[0].string);
1017                 else {
1018                         printf("  HEAD branch (remote HEAD is ambiguous,"
1019                                " may be one of the following):\n");
1020                         for (i = 0; i < states.heads.nr; i++)
1021                                 printf("    %s\n", states.heads.items[i].string);
1022                 }
1023
1024                 /* remote branch info */
1025                 info.width = 0;
1026                 for_each_string_list(add_remote_to_show_info, &states.new, &info);
1027                 for_each_string_list(add_remote_to_show_info, &states.tracked, &info);
1028                 for_each_string_list(add_remote_to_show_info, &states.stale, &info);
1029                 if (info.list->nr)
1030                         printf("  Remote branch%s:%s\n",
1031                                info.list->nr > 1 ? "es" : "",
1032                                 no_query ? " (status not queried)" : "");
1033                 for_each_string_list(show_remote_info_item, info.list, &info);
1034                 string_list_clear(info.list, 0);
1035
1036                 /* git pull info */
1037                 info.width = 0;
1038                 info.any_rebase = 0;
1039                 for_each_string_list(add_local_to_show_info, &branch_list, &info);
1040                 if (info.list->nr)
1041                         printf("  Local branch%s configured for 'git pull':\n",
1042                                info.list->nr > 1 ? "es" : "");
1043                 for_each_string_list(show_local_info_item, info.list, &info);
1044                 string_list_clear(info.list, 0);
1045
1046                 /* git push info */
1047                 if (states.remote->mirror)
1048                         printf("  Local refs will be mirrored by 'git push'\n");
1049
1050                 info.width = info.width2 = 0;
1051                 for_each_string_list(add_push_to_show_info, &states.push, &info);
1052                 qsort(info.list->items, info.list->nr,
1053                         sizeof(*info.list->items), cmp_string_with_push);
1054                 if (info.list->nr)
1055                         printf("  Local ref%s configured for 'git push'%s:\n",
1056                                 info.list->nr > 1 ? "s" : "",
1057                                 no_query ? " (status not queried)" : "");
1058                 for_each_string_list(show_push_info_item, info.list, &info);
1059                 string_list_clear(info.list, 0);
1060
1061                 free_remote_ref_states(&states);
1062         }
1063
1064         return result;
1065 }
1066
1067 static int set_head(int argc, const char **argv)
1068 {
1069         int i, opt_a = 0, opt_d = 0, result = 0;
1070         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1071         char *head_name = NULL;
1072
1073         struct option options[] = {
1074                 OPT_GROUP("set-head specific options"),
1075                 OPT_BOOLEAN('a', "auto", &opt_a,
1076                             "set refs/remotes/<name>/HEAD according to remote"),
1077                 OPT_BOOLEAN('d', "delete", &opt_d,
1078                             "delete refs/remotes/<name>/HEAD"),
1079                 OPT_END()
1080         };
1081         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
1082                              0);
1083         if (argc)
1084                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1085
1086         if (!opt_a && !opt_d && argc == 2) {
1087                 head_name = xstrdup(argv[1]);
1088         } else if (opt_a && !opt_d && argc == 1) {
1089                 struct ref_states states;
1090                 memset(&states, 0, sizeof(states));
1091                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1092                 if (!states.heads.nr)
1093                         result |= error("Cannot determine remote HEAD");
1094                 else if (states.heads.nr > 1) {
1095                         result |= error("Multiple remote HEAD branches. "
1096                                         "Please choose one explicitly with:");
1097                         for (i = 0; i < states.heads.nr; i++)
1098                                 fprintf(stderr, "  git remote set-head %s %s\n",
1099                                         argv[0], states.heads.items[i].string);
1100                 } else
1101                         head_name = xstrdup(states.heads.items[0].string);
1102                 free_remote_ref_states(&states);
1103         } else if (opt_d && !opt_a && argc == 1) {
1104                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1105                         result |= error("Could not delete %s", buf.buf);
1106         } else
1107                 usage_with_options(builtin_remote_usage, options);
1108
1109         if (head_name) {
1110                 unsigned char sha1[20];
1111                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1112                 /* make sure it's valid */
1113                 if (!resolve_ref(buf2.buf, sha1, 1, NULL))
1114                         result |= error("Not a valid ref: %s", buf2.buf);
1115                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1116                         result |= error("Could not setup %s", buf.buf);
1117                 if (opt_a)
1118                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1119                 free(head_name);
1120         }
1121
1122         strbuf_release(&buf);
1123         strbuf_release(&buf2);
1124         return result;
1125 }
1126
1127 static int prune(int argc, const char **argv)
1128 {
1129         int dry_run = 0, result = 0;
1130         struct option options[] = {
1131                 OPT_GROUP("prune specific options"),
1132                 OPT__DRY_RUN(&dry_run),
1133                 OPT_END()
1134         };
1135
1136         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
1137                              0);
1138
1139         if (argc < 1)
1140                 usage_with_options(builtin_remote_usage, options);
1141
1142         for (; argc; argc--, argv++)
1143                 result |= prune_remote(*argv, dry_run);
1144
1145         return result;
1146 }
1147
1148 static int prune_remote(const char *remote, int dry_run)
1149 {
1150         int result = 0, i;
1151         struct ref_states states;
1152         const char *dangling_msg = dry_run
1153                 ? " %s will become dangling!\n"
1154                 : " %s has become dangling!\n";
1155
1156         memset(&states, 0, sizeof(states));
1157         get_remote_ref_states(remote, &states, GET_REF_STATES);
1158
1159         if (states.stale.nr) {
1160                 printf("Pruning %s\n", remote);
1161                 printf("URL: %s\n",
1162                        states.remote->url_nr
1163                        ? states.remote->url[0]
1164                        : "(no URL)");
1165         }
1166
1167         for (i = 0; i < states.stale.nr; i++) {
1168                 const char *refname = states.stale.items[i].util;
1169
1170                 if (!dry_run)
1171                         result |= delete_ref(refname, NULL, 0);
1172
1173                 printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1174                        abbrev_ref(refname, "refs/remotes/"));
1175                 warn_dangling_symref(dangling_msg, refname);
1176         }
1177
1178         free_remote_ref_states(&states);
1179         return result;
1180 }
1181
1182 static int get_one_remote_for_update(struct remote *remote, void *priv)
1183 {
1184         struct string_list *list = priv;
1185         if (!remote->skip_default_update)
1186                 string_list_append(remote->name, list);
1187         return 0;
1188 }
1189
1190 struct remote_group {
1191         const char *name;
1192         struct string_list *list;
1193 } remote_group;
1194
1195 static int get_remote_group(const char *key, const char *value, void *num_hits)
1196 {
1197         if (!prefixcmp(key, "remotes.") &&
1198                         !strcmp(key + 8, remote_group.name)) {
1199                 /* split list by white space */
1200                 int space = strcspn(value, " \t\n");
1201                 while (*value) {
1202                         if (space > 1) {
1203                                 string_list_append(xstrndup(value, space),
1204                                                 remote_group.list);
1205                                 ++*((int *)num_hits);
1206                         }
1207                         value += space + (value[space] != '\0');
1208                         space = strcspn(value, " \t\n");
1209                 }
1210         }
1211
1212         return 0;
1213 }
1214
1215 static int update(int argc, const char **argv)
1216 {
1217         int i, result = 0, prune = 0;
1218         struct string_list list = { NULL, 0, 0, 0 };
1219         static const char *default_argv[] = { NULL, "default", NULL };
1220         struct option options[] = {
1221                 OPT_GROUP("update specific options"),
1222                 OPT_BOOLEAN('p', "prune", &prune,
1223                             "prune remotes after fetching"),
1224                 OPT_END()
1225         };
1226
1227         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
1228                              PARSE_OPT_KEEP_ARGV0);
1229         if (argc < 2) {
1230                 argc = 2;
1231                 argv = default_argv;
1232         }
1233
1234         remote_group.list = &list;
1235         for (i = 1; i < argc; i++) {
1236                 int groups_found = 0;
1237                 remote_group.name = argv[i];
1238                 result = git_config(get_remote_group, &groups_found);
1239                 if (!groups_found && (i != 1 || strcmp(argv[1], "default"))) {
1240                         struct remote *remote;
1241                         if (!remote_is_configured(argv[i]))
1242                                 die("No such remote or remote group: %s",
1243                                     argv[i]);
1244                         remote = remote_get(argv[i]);
1245                         string_list_append(remote->name, remote_group.list);
1246                 }
1247         }
1248
1249         if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
1250                 result = for_each_remote(get_one_remote_for_update, &list);
1251
1252         for (i = 0; i < list.nr; i++) {
1253                 int err = fetch_remote(list.items[i].string);
1254                 result |= err;
1255                 if (!err && prune)
1256                         result |= prune_remote(list.items[i].string, 0);
1257         }
1258
1259         /* all names were strdup()ed or strndup()ed */
1260         list.strdup_strings = 1;
1261         string_list_clear(&list, 0);
1262
1263         return result;
1264 }
1265
1266 static int get_one_entry(struct remote *remote, void *priv)
1267 {
1268         struct string_list *list = priv;
1269
1270         if (remote->url_nr > 0) {
1271                 int i;
1272
1273                 for (i = 0; i < remote->url_nr; i++)
1274                         string_list_append(remote->name, list)->util = (void *)remote->url[i];
1275         } else
1276                 string_list_append(remote->name, list)->util = NULL;
1277
1278         return 0;
1279 }
1280
1281 static int show_all(void)
1282 {
1283         struct string_list list = { NULL, 0, 0 };
1284         int result = for_each_remote(get_one_entry, &list);
1285
1286         if (!result) {
1287                 int i;
1288
1289                 sort_string_list(&list);
1290                 for (i = 0; i < list.nr; i++) {
1291                         struct string_list_item *item = list.items + i;
1292                         if (verbose)
1293                                 printf("%s\t%s\n", item->string,
1294                                         item->util ? (const char *)item->util : "");
1295                         else {
1296                                 if (i && !strcmp((item - 1)->string, item->string))
1297                                         continue;
1298                                 printf("%s\n", item->string);
1299                         }
1300                 }
1301         }
1302         return result;
1303 }
1304
1305 int cmd_remote(int argc, const char **argv, const char *prefix)
1306 {
1307         struct option options[] = {
1308                 OPT__VERBOSE(&verbose),
1309                 OPT_END()
1310         };
1311         int result;
1312
1313         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1314                 PARSE_OPT_STOP_AT_NON_OPTION);
1315
1316         if (argc < 1)
1317                 result = show_all();
1318         else if (!strcmp(argv[0], "add"))
1319                 result = add(argc, argv);
1320         else if (!strcmp(argv[0], "rename"))
1321                 result = mv(argc, argv);
1322         else if (!strcmp(argv[0], "rm"))
1323                 result = rm(argc, argv);
1324         else if (!strcmp(argv[0], "set-head"))
1325                 result = set_head(argc, argv);
1326         else if (!strcmp(argv[0], "show"))
1327                 result = show(argc, argv);
1328         else if (!strcmp(argv[0], "prune"))
1329                 result = prune(argc, argv);
1330         else if (!strcmp(argv[0], "update"))
1331                 result = update(argc, argv);
1332         else {
1333                 error("Unknown subcommand: %s", argv[0]);
1334                 usage_with_options(builtin_remote_usage, options);
1335         }
1336
1337         return result ? 1 : 0;
1338 }