Code

Makefile: install 'git' in execdir
[git.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"
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 };
22 #define GET_REF_STATES (1<<0)
23 #define GET_HEAD_NAMES (1<<1)
24 #define GET_PUSH_REF_STATES (1<<2)
26 static int verbose;
28 static int show_all(void);
29 static int prune_remote(const char *remote, int dry_run);
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 }
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 }
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 }
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;
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         };
82         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
83                              0);
85         if (argc < 2)
86                 usage_with_options(builtin_remote_usage, options);
88         name = argv[0];
89         url = argv[1];
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);
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);
100         strbuf_addf(&buf, "remote.%s.url", name);
101         if (git_config_set(buf.buf, url))
102                 return 1;
104         strbuf_reset(&buf);
105         strbuf_addf(&buf, "remote.%s.fetch", name);
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;
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         }
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         }
131         if (fetch && fetch_remote(name))
132                 return 1;
134         if (master) {
135                 strbuf_reset(&buf);
136                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
138                 strbuf_reset(&buf2);
139                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
141                 if (create_symref(buf.buf, buf2.buf, "remote add"))
142                         return error("Could not setup master '%s'", master);
143         }
145         strbuf_release(&buf);
146         strbuf_release(&buf2);
147         string_list_clear(&track, 0);
149         return 0;
152 struct branch_info {
153         char *remote_name;
154         struct string_list merge;
155         int rebase;
156 };
158 static struct string_list branch_list;
160 static const char *abbrev_ref(const char *name, const char *prefix)
162         const char *abbrev = skip_prefix(name, prefix);
163         if (abbrev)
164                 return abbrev;
165         return name;
167 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
169 static int config_read_branches(const char *key, const char *value, void *cb)
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;
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;
191                 item = string_list_insert(name, &branch_list);
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;
217 static void read_branches(void)
219         if (branch_list.nr)
220                 return;
221         git_config(config_read_branches, NULL);
224 struct ref_states {
225         struct remote *remote;
226         struct string_list new, stale, tracked, heads, push;
227         int queried;
228 };
230 static int handle_one_branch(const char *refname,
231         const unsigned char *sha1, int flags, void *cb_data)
233         struct ref_states *states = cb_data;
234         struct refspec refspec;
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;
252 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
254         struct ref *fetch_map = NULL, **tail = &fetch_map;
255         struct ref *ref;
256         int i;
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]);
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);
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);
278         return 0;
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 };
294 static int get_push_ref_states(const struct ref *remote_refs,
295         struct ref_states *states)
297         struct remote *remote = states->remote;
298         struct ref *ref, *local_refs, *push_map;
299         if (remote->mirror)
300                 return 0;
302         local_refs = get_local_heads();
303         push_map = copy_ref_list(remote_refs);
305         match_refs(local_refs, &push_map, remote->push_refspec_nr,
306                    remote->push_refspec, MATCH_REFS_NONE);
308         states->push.strdup_strings = 1;
309         for (ref = push_map; ref; ref = ref->next) {
310                 struct string_list_item *item;
311                 struct push_info *info;
313                 if (!ref->peer_ref)
314                         continue;
315                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
317                 item = string_list_append(abbrev_branch(ref->peer_ref->name),
318                                           &states->push);
319                 item->util = xcalloc(sizeof(struct push_info), 1);
320                 info = item->util;
321                 info->forced = ref->force;
322                 info->dest = xstrdup(abbrev_branch(ref->name));
324                 if (is_null_sha1(ref->new_sha1)) {
325                         info->status = PUSH_STATUS_DELETE;
326                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
327                         info->status = PUSH_STATUS_UPTODATE;
328                 else if (is_null_sha1(ref->old_sha1))
329                         info->status = PUSH_STATUS_CREATE;
330                 else if (has_sha1_file(ref->old_sha1) &&
331                          ref_newer(ref->new_sha1, ref->old_sha1))
332                         info->status = PUSH_STATUS_FASTFORWARD;
333                 else
334                         info->status = PUSH_STATUS_OUTOFDATE;
335         }
336         free_refs(local_refs);
337         free_refs(push_map);
338         return 0;
341 static int get_push_ref_states_noquery(struct ref_states *states)
343         int i;
344         struct remote *remote = states->remote;
345         struct string_list_item *item;
346         struct push_info *info;
348         if (remote->mirror)
349                 return 0;
351         states->push.strdup_strings = 1;
352         if (!remote->push_refspec_nr) {
353                 item = string_list_append("(matching)", &states->push);
354                 info = item->util = xcalloc(sizeof(struct push_info), 1);
355                 info->status = PUSH_STATUS_NOTQUERIED;
356                 info->dest = xstrdup(item->string);
357         }
358         for (i = 0; i < remote->push_refspec_nr; i++) {
359                 struct refspec *spec = remote->push + i;
360                 if (spec->matching)
361                         item = string_list_append("(matching)", &states->push);
362                 else if (strlen(spec->src))
363                         item = string_list_append(spec->src, &states->push);
364                 else
365                         item = string_list_append("(delete)", &states->push);
367                 info = item->util = xcalloc(sizeof(struct push_info), 1);
368                 info->forced = spec->force;
369                 info->status = PUSH_STATUS_NOTQUERIED;
370                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
371         }
372         return 0;
375 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
377         struct ref *ref, *matches;
378         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
379         struct refspec refspec;
381         refspec.force = 0;
382         refspec.pattern = 1;
383         refspec.src = refspec.dst = "refs/heads/*";
384         states->heads.strdup_strings = 1;
385         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
386         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
387                                     fetch_map, 1);
388         for(ref = matches; ref; ref = ref->next)
389                 string_list_append(abbrev_branch(ref->name), &states->heads);
391         free_refs(fetch_map);
392         free_refs(matches);
394         return 0;
397 struct known_remote {
398         struct known_remote *next;
399         struct remote *remote;
400 };
402 struct known_remotes {
403         struct remote *to_delete;
404         struct known_remote *list;
405 };
407 static int add_known_remote(struct remote *remote, void *cb_data)
409         struct known_remotes *all = cb_data;
410         struct known_remote *r;
412         if (!strcmp(all->to_delete->name, remote->name))
413                 return 0;
415         r = xmalloc(sizeof(*r));
416         r->remote = remote;
417         r->next = all->list;
418         all->list = r;
419         return 0;
422 struct branches_for_remote {
423         struct remote *remote;
424         struct string_list *branches, *skipped;
425         struct known_remotes *keep;
426 };
428 static int add_branch_for_removal(const char *refname,
429         const unsigned char *sha1, int flags, void *cb_data)
431         struct branches_for_remote *branches = cb_data;
432         struct refspec refspec;
433         struct string_list_item *item;
434         struct known_remote *kr;
436         memset(&refspec, 0, sizeof(refspec));
437         refspec.dst = (char *)refname;
438         if (remote_find_tracking(branches->remote, &refspec))
439                 return 0;
441         /* don't delete a branch if another remote also uses it */
442         for (kr = branches->keep->list; kr; kr = kr->next) {
443                 memset(&refspec, 0, sizeof(refspec));
444                 refspec.dst = (char *)refname;
445                 if (!remote_find_tracking(kr->remote, &refspec))
446                         return 0;
447         }
449         /* don't delete non-remote refs */
450         if (prefixcmp(refname, "refs/remotes")) {
451                 /* advise user how to delete local branches */
452                 if (!prefixcmp(refname, "refs/heads/"))
453                         string_list_append(abbrev_branch(refname),
454                                            branches->skipped);
455                 /* silently skip over other non-remote refs */
456                 return 0;
457         }
459         /* make sure that symrefs are deleted */
460         if (flags & REF_ISSYMREF)
461                 return unlink(git_path("%s", refname));
463         item = string_list_append(refname, branches->branches);
464         item->util = xmalloc(20);
465         hashcpy(item->util, sha1);
467         return 0;
470 struct rename_info {
471         const char *old;
472         const char *new;
473         struct string_list *remote_branches;
474 };
476 static int read_remote_branches(const char *refname,
477         const unsigned char *sha1, int flags, void *cb_data)
479         struct rename_info *rename = cb_data;
480         struct strbuf buf = STRBUF_INIT;
481         struct string_list_item *item;
482         int flag;
483         unsigned char orig_sha1[20];
484         const char *symref;
486         strbuf_addf(&buf, "refs/remotes/%s", rename->old);
487         if(!prefixcmp(refname, buf.buf)) {
488                 item = string_list_append(xstrdup(refname), rename->remote_branches);
489                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
490                 if (flag & REF_ISSYMREF)
491                         item->util = xstrdup(symref);
492                 else
493                         item->util = NULL;
494         }
496         return 0;
499 static int migrate_file(struct remote *remote)
501         struct strbuf buf = STRBUF_INIT;
502         int i;
503         char *path = NULL;
505         strbuf_addf(&buf, "remote.%s.url", remote->name);
506         for (i = 0; i < remote->url_nr; i++)
507                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
508                         return error("Could not append '%s' to '%s'",
509                                         remote->url[i], buf.buf);
510         strbuf_reset(&buf);
511         strbuf_addf(&buf, "remote.%s.push", remote->name);
512         for (i = 0; i < remote->push_refspec_nr; i++)
513                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
514                         return error("Could not append '%s' to '%s'",
515                                         remote->push_refspec[i], buf.buf);
516         strbuf_reset(&buf);
517         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
518         for (i = 0; i < remote->fetch_refspec_nr; i++)
519                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
520                         return error("Could not append '%s' to '%s'",
521                                         remote->fetch_refspec[i], buf.buf);
522         if (remote->origin == REMOTE_REMOTES)
523                 path = git_path("remotes/%s", remote->name);
524         else if (remote->origin == REMOTE_BRANCHES)
525                 path = git_path("branches/%s", remote->name);
526         if (path)
527                 unlink_or_warn(path);
528         return 0;
531 static int mv(int argc, const char **argv)
533         struct option options[] = {
534                 OPT_END()
535         };
536         struct remote *oldremote, *newremote;
537         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
538         struct string_list remote_branches = { NULL, 0, 0, 0 };
539         struct rename_info rename;
540         int i;
542         if (argc != 3)
543                 usage_with_options(builtin_remote_usage, options);
545         rename.old = argv[1];
546         rename.new = argv[2];
547         rename.remote_branches = &remote_branches;
549         oldremote = remote_get(rename.old);
550         if (!oldremote)
551                 die("No such remote: %s", rename.old);
553         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
554                 return migrate_file(oldremote);
556         newremote = remote_get(rename.new);
557         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
558                 die("remote %s already exists.", rename.new);
560         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
561         if (!valid_fetch_refspec(buf.buf))
562                 die("'%s' is not a valid remote name", rename.new);
564         strbuf_reset(&buf);
565         strbuf_addf(&buf, "remote.%s", rename.old);
566         strbuf_addf(&buf2, "remote.%s", rename.new);
567         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
568                 return error("Could not rename config section '%s' to '%s'",
569                                 buf.buf, buf2.buf);
571         strbuf_reset(&buf);
572         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
573         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
574                 return error("Could not remove config section '%s'", buf.buf);
575         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
576                 char *ptr;
578                 strbuf_reset(&buf2);
579                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
580                 ptr = strstr(buf2.buf, rename.old);
581                 if (ptr)
582                         strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
583                                         rename.new, strlen(rename.new));
584                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
585                         return error("Could not append '%s'", buf.buf);
586         }
588         read_branches();
589         for (i = 0; i < branch_list.nr; i++) {
590                 struct string_list_item *item = branch_list.items + i;
591                 struct branch_info *info = item->util;
592                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
593                         strbuf_reset(&buf);
594                         strbuf_addf(&buf, "branch.%s.remote", item->string);
595                         if (git_config_set(buf.buf, rename.new)) {
596                                 return error("Could not set '%s'", buf.buf);
597                         }
598                 }
599         }
601         /*
602          * First remove symrefs, then rename the rest, finally create
603          * the new symrefs.
604          */
605         for_each_ref(read_remote_branches, &rename);
606         for (i = 0; i < remote_branches.nr; i++) {
607                 struct string_list_item *item = remote_branches.items + i;
608                 int flag = 0;
609                 unsigned char sha1[20];
611                 resolve_ref(item->string, sha1, 1, &flag);
612                 if (!(flag & REF_ISSYMREF))
613                         continue;
614                 if (delete_ref(item->string, NULL, REF_NODEREF))
615                         die("deleting '%s' failed", item->string);
616         }
617         for (i = 0; i < remote_branches.nr; i++) {
618                 struct string_list_item *item = remote_branches.items + i;
620                 if (item->util)
621                         continue;
622                 strbuf_reset(&buf);
623                 strbuf_addstr(&buf, item->string);
624                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
625                                 rename.new, strlen(rename.new));
626                 strbuf_reset(&buf2);
627                 strbuf_addf(&buf2, "remote: renamed %s to %s",
628                                 item->string, buf.buf);
629                 if (rename_ref(item->string, buf.buf, buf2.buf))
630                         die("renaming '%s' failed", item->string);
631         }
632         for (i = 0; i < remote_branches.nr; i++) {
633                 struct string_list_item *item = remote_branches.items + i;
635                 if (!item->util)
636                         continue;
637                 strbuf_reset(&buf);
638                 strbuf_addstr(&buf, item->string);
639                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
640                                 rename.new, strlen(rename.new));
641                 strbuf_reset(&buf2);
642                 strbuf_addstr(&buf2, item->util);
643                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
644                                 rename.new, strlen(rename.new));
645                 strbuf_reset(&buf3);
646                 strbuf_addf(&buf3, "remote: renamed %s to %s",
647                                 item->string, buf.buf);
648                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
649                         die("creating '%s' failed", buf.buf);
650         }
651         return 0;
654 static int remove_branches(struct string_list *branches)
656         int i, result = 0;
657         for (i = 0; i < branches->nr; i++) {
658                 struct string_list_item *item = branches->items + i;
659                 const char *refname = item->string;
660                 unsigned char *sha1 = item->util;
662                 if (delete_ref(refname, sha1, 0))
663                         result |= error("Could not remove branch %s", refname);
664         }
665         return result;
668 static int rm(int argc, const char **argv)
670         struct option options[] = {
671                 OPT_END()
672         };
673         struct remote *remote;
674         struct strbuf buf = STRBUF_INIT;
675         struct known_remotes known_remotes = { NULL, NULL };
676         struct string_list branches = { NULL, 0, 0, 1 };
677         struct string_list skipped = { NULL, 0, 0, 1 };
678         struct branches_for_remote cb_data = {
679                 NULL, &branches, &skipped, &known_remotes
680         };
681         int i, result;
683         if (argc != 2)
684                 usage_with_options(builtin_remote_usage, options);
686         remote = remote_get(argv[1]);
687         if (!remote)
688                 die("No such remote: %s", argv[1]);
690         known_remotes.to_delete = remote;
691         for_each_remote(add_known_remote, &known_remotes);
693         strbuf_addf(&buf, "remote.%s", remote->name);
694         if (git_config_rename_section(buf.buf, NULL) < 1)
695                 return error("Could not remove config section '%s'", buf.buf);
697         read_branches();
698         for (i = 0; i < branch_list.nr; i++) {
699                 struct string_list_item *item = branch_list.items + i;
700                 struct branch_info *info = item->util;
701                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
702                         const char *keys[] = { "remote", "merge", NULL }, **k;
703                         for (k = keys; *k; k++) {
704                                 strbuf_reset(&buf);
705                                 strbuf_addf(&buf, "branch.%s.%s",
706                                                 item->string, *k);
707                                 if (git_config_set(buf.buf, NULL)) {
708                                         strbuf_release(&buf);
709                                         return -1;
710                                 }
711                         }
712                 }
713         }
715         /*
716          * We cannot just pass a function to for_each_ref() which deletes
717          * the branches one by one, since for_each_ref() relies on cached
718          * refs, which are invalidated when deleting a branch.
719          */
720         cb_data.remote = remote;
721         result = for_each_ref(add_branch_for_removal, &cb_data);
722         strbuf_release(&buf);
724         if (!result)
725                 result = remove_branches(&branches);
726         string_list_clear(&branches, 1);
728         if (skipped.nr) {
729                 fprintf(stderr, skipped.nr == 1 ?
730                         "Note: A non-remote branch was not removed; "
731                         "to delete it, use:\n" :
732                         "Note: Non-remote branches were not removed; "
733                         "to delete them, use:\n");
734                 for (i = 0; i < skipped.nr; i++)
735                         fprintf(stderr, "  git branch -d %s\n",
736                                 skipped.items[i].string);
737         }
738         string_list_clear(&skipped, 0);
740         return result;
743 static void clear_push_info(void *util, const char *string)
745         struct push_info *info = util;
746         free(info->dest);
747         free(info);
750 static void free_remote_ref_states(struct ref_states *states)
752         string_list_clear(&states->new, 0);
753         string_list_clear(&states->stale, 0);
754         string_list_clear(&states->tracked, 0);
755         string_list_clear(&states->heads, 0);
756         string_list_clear_func(&states->push, clear_push_info);
759 static int append_ref_to_tracked_list(const char *refname,
760         const unsigned char *sha1, int flags, void *cb_data)
762         struct ref_states *states = cb_data;
763         struct refspec refspec;
765         if (flags & REF_ISSYMREF)
766                 return 0;
768         memset(&refspec, 0, sizeof(refspec));
769         refspec.dst = (char *)refname;
770         if (!remote_find_tracking(states->remote, &refspec))
771                 string_list_append(abbrev_branch(refspec.src), &states->tracked);
773         return 0;
776 static int get_remote_ref_states(const char *name,
777                                  struct ref_states *states,
778                                  int query)
780         struct transport *transport;
781         const struct ref *remote_refs;
783         states->remote = remote_get(name);
784         if (!states->remote)
785                 return error("No such remote: %s", name);
787         read_branches();
789         if (query) {
790                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
791                         states->remote->url[0] : NULL);
792                 remote_refs = transport_get_remote_refs(transport);
793                 transport_disconnect(transport);
795                 states->queried = 1;
796                 if (query & GET_REF_STATES)
797                         get_ref_states(remote_refs, states);
798                 if (query & GET_HEAD_NAMES)
799                         get_head_names(remote_refs, states);
800                 if (query & GET_PUSH_REF_STATES)
801                         get_push_ref_states(remote_refs, states);
802         } else {
803                 for_each_ref(append_ref_to_tracked_list, states);
804                 sort_string_list(&states->tracked);
805                 get_push_ref_states_noquery(states);
806         }
808         return 0;
811 struct show_info {
812         struct string_list *list;
813         struct ref_states *states;
814         int width, width2;
815         int any_rebase;
816 };
818 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
820         struct show_info *info = cb_data;
821         int n = strlen(item->string);
822         if (n > info->width)
823                 info->width = n;
824         string_list_insert(item->string, info->list);
825         return 0;
828 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
830         struct show_info *info = cb_data;
831         struct ref_states *states = info->states;
832         const char *name = item->string;
834         if (states->queried) {
835                 const char *fmt = "%s";
836                 const char *arg = "";
837                 if (string_list_has_string(&states->new, name)) {
838                         fmt = " new (next fetch will store in remotes/%s)";
839                         arg = states->remote->name;
840                 } else if (string_list_has_string(&states->tracked, name))
841                         arg = " tracked";
842                 else if (string_list_has_string(&states->stale, name))
843                         arg = " stale (use 'git remote prune' to remove)";
844                 else
845                         arg = " ???";
846                 printf("    %-*s", info->width, name);
847                 printf(fmt, arg);
848                 printf("\n");
849         } else
850                 printf("    %s\n", name);
852         return 0;
855 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
857         struct show_info *show_info = cb_data;
858         struct ref_states *states = show_info->states;
859         struct branch_info *branch_info = branch_item->util;
860         struct string_list_item *item;
861         int n;
863         if (!branch_info->merge.nr || !branch_info->remote_name ||
864             strcmp(states->remote->name, branch_info->remote_name))
865                 return 0;
866         if ((n = strlen(branch_item->string)) > show_info->width)
867                 show_info->width = n;
868         if (branch_info->rebase)
869                 show_info->any_rebase = 1;
871         item = string_list_insert(branch_item->string, show_info->list);
872         item->util = branch_info;
874         return 0;
877 static int show_local_info_item(struct string_list_item *item, void *cb_data)
879         struct show_info *show_info = cb_data;
880         struct branch_info *branch_info = item->util;
881         struct string_list *merge = &branch_info->merge;
882         const char *also;
883         int i;
885         if (branch_info->rebase && branch_info->merge.nr > 1) {
886                 error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
887                         item->string);
888                 return 0;
889         }
891         printf("    %-*s ", show_info->width, item->string);
892         if (branch_info->rebase) {
893                 printf("rebases onto remote %s\n", merge->items[0].string);
894                 return 0;
895         } else if (show_info->any_rebase) {
896                 printf(" merges with remote %s\n", merge->items[0].string);
897                 also = "    and with remote";
898         } else {
899                 printf("merges with remote %s\n", merge->items[0].string);
900                 also = "   and with remote";
901         }
902         for (i = 1; i < merge->nr; i++)
903                 printf("    %-*s %s %s\n", show_info->width, "", also,
904                        merge->items[i].string);
906         return 0;
909 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
911         struct show_info *show_info = cb_data;
912         struct push_info *push_info = push_item->util;
913         struct string_list_item *item;
914         int n;
915         if ((n = strlen(push_item->string)) > show_info->width)
916                 show_info->width = n;
917         if ((n = strlen(push_info->dest)) > show_info->width2)
918                 show_info->width2 = n;
919         item = string_list_append(push_item->string, show_info->list);
920         item->util = push_item->util;
921         return 0;
924 /*
925  * Sorting comparison for a string list that has push_info
926  * structs in its util field
927  */
928 static int cmp_string_with_push(const void *va, const void *vb)
930         const struct string_list_item *a = va;
931         const struct string_list_item *b = vb;
932         const struct push_info *a_push = a->util;
933         const struct push_info *b_push = b->util;
934         int cmp = strcmp(a->string, b->string);
935         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
938 static int show_push_info_item(struct string_list_item *item, void *cb_data)
940         struct show_info *show_info = cb_data;
941         struct push_info *push_info = item->util;
942         char *src = item->string, *status = NULL;
944         switch (push_info->status) {
945         case PUSH_STATUS_CREATE:
946                 status = "create";
947                 break;
948         case PUSH_STATUS_DELETE:
949                 status = "delete";
950                 src = "(none)";
951                 break;
952         case PUSH_STATUS_UPTODATE:
953                 status = "up to date";
954                 break;
955         case PUSH_STATUS_FASTFORWARD:
956                 status = "fast forwardable";
957                 break;
958         case PUSH_STATUS_OUTOFDATE:
959                 status = "local out of date";
960                 break;
961         case PUSH_STATUS_NOTQUERIED:
962                 break;
963         }
964         if (status)
965                 printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
966                         push_info->forced ? "forces" : "pushes",
967                         show_info->width2, push_info->dest, status);
968         else
969                 printf("    %-*s %s to %s\n", show_info->width, src,
970                         push_info->forced ? "forces" : "pushes",
971                         push_info->dest);
972         return 0;
975 static int show(int argc, const char **argv)
977         int no_query = 0, result = 0, query_flag = 0;
978         struct option options[] = {
979                 OPT_GROUP("show specific options"),
980                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
981                 OPT_END()
982         };
983         struct ref_states states;
984         struct string_list info_list = { NULL, 0, 0, 0 };
985         struct show_info info;
987         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
988                              0);
990         if (argc < 1)
991                 return show_all();
993         if (!no_query)
994                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
996         memset(&states, 0, sizeof(states));
997         memset(&info, 0, sizeof(info));
998         info.states = &states;
999         info.list = &info_list;
1000         for (; argc; argc--, argv++) {
1001                 int i;
1002                 const char **url;
1003                 int url_nr;
1005                 get_remote_ref_states(*argv, &states, query_flag);
1007                 printf("* remote %s\n", *argv);
1008                 printf("  Fetch URL: %s\n", states.remote->url_nr > 0 ?
1009                         states.remote->url[0] : "(no URL)");
1010                 if (states.remote->pushurl_nr) {
1011                         url = states.remote->pushurl;
1012                         url_nr = states.remote->pushurl_nr;
1013                 } else {
1014                         url = states.remote->url;
1015                         url_nr = states.remote->url_nr;
1016                 }
1017                 for (i=0; i < url_nr; i++)
1018                         printf("  Push  URL: %s\n", url[i]);
1019                 if (!i)
1020                         printf("  Push  URL: %s\n", "(no URL)");
1021                 if (no_query)
1022                         printf("  HEAD branch: (not queried)\n");
1023                 else if (!states.heads.nr)
1024                         printf("  HEAD branch: (unknown)\n");
1025                 else if (states.heads.nr == 1)
1026                         printf("  HEAD branch: %s\n", states.heads.items[0].string);
1027                 else {
1028                         printf("  HEAD branch (remote HEAD is ambiguous,"
1029                                " may be one of the following):\n");
1030                         for (i = 0; i < states.heads.nr; i++)
1031                                 printf("    %s\n", states.heads.items[i].string);
1032                 }
1034                 /* remote branch info */
1035                 info.width = 0;
1036                 for_each_string_list(add_remote_to_show_info, &states.new, &info);
1037                 for_each_string_list(add_remote_to_show_info, &states.tracked, &info);
1038                 for_each_string_list(add_remote_to_show_info, &states.stale, &info);
1039                 if (info.list->nr)
1040                         printf("  Remote branch%s:%s\n",
1041                                info.list->nr > 1 ? "es" : "",
1042                                 no_query ? " (status not queried)" : "");
1043                 for_each_string_list(show_remote_info_item, info.list, &info);
1044                 string_list_clear(info.list, 0);
1046                 /* git pull info */
1047                 info.width = 0;
1048                 info.any_rebase = 0;
1049                 for_each_string_list(add_local_to_show_info, &branch_list, &info);
1050                 if (info.list->nr)
1051                         printf("  Local branch%s configured for 'git pull':\n",
1052                                info.list->nr > 1 ? "es" : "");
1053                 for_each_string_list(show_local_info_item, info.list, &info);
1054                 string_list_clear(info.list, 0);
1056                 /* git push info */
1057                 if (states.remote->mirror)
1058                         printf("  Local refs will be mirrored by 'git push'\n");
1060                 info.width = info.width2 = 0;
1061                 for_each_string_list(add_push_to_show_info, &states.push, &info);
1062                 qsort(info.list->items, info.list->nr,
1063                         sizeof(*info.list->items), cmp_string_with_push);
1064                 if (info.list->nr)
1065                         printf("  Local ref%s configured for 'git push'%s:\n",
1066                                 info.list->nr > 1 ? "s" : "",
1067                                 no_query ? " (status not queried)" : "");
1068                 for_each_string_list(show_push_info_item, info.list, &info);
1069                 string_list_clear(info.list, 0);
1071                 free_remote_ref_states(&states);
1072         }
1074         return result;
1077 static int set_head(int argc, const char **argv)
1079         int i, opt_a = 0, opt_d = 0, result = 0;
1080         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1081         char *head_name = NULL;
1083         struct option options[] = {
1084                 OPT_GROUP("set-head specific options"),
1085                 OPT_BOOLEAN('a', "auto", &opt_a,
1086                             "set refs/remotes/<name>/HEAD according to remote"),
1087                 OPT_BOOLEAN('d', "delete", &opt_d,
1088                             "delete refs/remotes/<name>/HEAD"),
1089                 OPT_END()
1090         };
1091         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
1092                              0);
1093         if (argc)
1094                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1096         if (!opt_a && !opt_d && argc == 2) {
1097                 head_name = xstrdup(argv[1]);
1098         } else if (opt_a && !opt_d && argc == 1) {
1099                 struct ref_states states;
1100                 memset(&states, 0, sizeof(states));
1101                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1102                 if (!states.heads.nr)
1103                         result |= error("Cannot determine remote HEAD");
1104                 else if (states.heads.nr > 1) {
1105                         result |= error("Multiple remote HEAD branches. "
1106                                         "Please choose one explicitly with:");
1107                         for (i = 0; i < states.heads.nr; i++)
1108                                 fprintf(stderr, "  git remote set-head %s %s\n",
1109                                         argv[0], states.heads.items[i].string);
1110                 } else
1111                         head_name = xstrdup(states.heads.items[0].string);
1112                 free_remote_ref_states(&states);
1113         } else if (opt_d && !opt_a && argc == 1) {
1114                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1115                         result |= error("Could not delete %s", buf.buf);
1116         } else
1117                 usage_with_options(builtin_remote_usage, options);
1119         if (head_name) {
1120                 unsigned char sha1[20];
1121                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1122                 /* make sure it's valid */
1123                 if (!resolve_ref(buf2.buf, sha1, 1, NULL))
1124                         result |= error("Not a valid ref: %s", buf2.buf);
1125                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1126                         result |= error("Could not setup %s", buf.buf);
1127                 if (opt_a)
1128                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1129                 free(head_name);
1130         }
1132         strbuf_release(&buf);
1133         strbuf_release(&buf2);
1134         return result;
1137 static int prune(int argc, const char **argv)
1139         int dry_run = 0, result = 0;
1140         struct option options[] = {
1141                 OPT_GROUP("prune specific options"),
1142                 OPT__DRY_RUN(&dry_run),
1143                 OPT_END()
1144         };
1146         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
1147                              0);
1149         if (argc < 1)
1150                 usage_with_options(builtin_remote_usage, options);
1152         for (; argc; argc--, argv++)
1153                 result |= prune_remote(*argv, dry_run);
1155         return result;
1158 static int prune_remote(const char *remote, int dry_run)
1160         int result = 0, i;
1161         struct ref_states states;
1162         const char *dangling_msg = dry_run
1163                 ? " %s will become dangling!\n"
1164                 : " %s has become dangling!\n";
1166         memset(&states, 0, sizeof(states));
1167         get_remote_ref_states(remote, &states, GET_REF_STATES);
1169         if (states.stale.nr) {
1170                 printf("Pruning %s\n", remote);
1171                 printf("URL: %s\n",
1172                        states.remote->url_nr
1173                        ? states.remote->url[0]
1174                        : "(no URL)");
1175         }
1177         for (i = 0; i < states.stale.nr; i++) {
1178                 const char *refname = states.stale.items[i].util;
1180                 if (!dry_run)
1181                         result |= delete_ref(refname, NULL, 0);
1183                 printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1184                        abbrev_ref(refname, "refs/remotes/"));
1185                 warn_dangling_symref(dangling_msg, refname);
1186         }
1188         free_remote_ref_states(&states);
1189         return result;
1192 static int get_one_remote_for_update(struct remote *remote, void *priv)
1194         struct string_list *list = priv;
1195         if (!remote->skip_default_update)
1196                 string_list_append(remote->name, list);
1197         return 0;
1200 static struct remote_group {
1201         const char *name;
1202         struct string_list *list;
1203 } remote_group;
1205 static int get_remote_group(const char *key, const char *value, void *num_hits)
1207         if (!prefixcmp(key, "remotes.") &&
1208                         !strcmp(key + 8, remote_group.name)) {
1209                 /* split list by white space */
1210                 int space = strcspn(value, " \t\n");
1211                 while (*value) {
1212                         if (space > 1) {
1213                                 string_list_append(xstrndup(value, space),
1214                                                 remote_group.list);
1215                                 ++*((int *)num_hits);
1216                         }
1217                         value += space + (value[space] != '\0');
1218                         space = strcspn(value, " \t\n");
1219                 }
1220         }
1222         return 0;
1225 static int update(int argc, const char **argv)
1227         int i, result = 0, prune = 0;
1228         struct string_list list = { NULL, 0, 0, 0 };
1229         static const char *default_argv[] = { NULL, "default", NULL };
1230         struct option options[] = {
1231                 OPT_GROUP("update specific options"),
1232                 OPT_BOOLEAN('p', "prune", &prune,
1233                             "prune remotes after fetching"),
1234                 OPT_END()
1235         };
1237         argc = parse_options(argc, argv, NULL, options, builtin_remote_usage,
1238                              PARSE_OPT_KEEP_ARGV0);
1239         if (argc < 2) {
1240                 argc = 2;
1241                 argv = default_argv;
1242         }
1244         remote_group.list = &list;
1245         for (i = 1; i < argc; i++) {
1246                 int groups_found = 0;
1247                 remote_group.name = argv[i];
1248                 result = git_config(get_remote_group, &groups_found);
1249                 if (!groups_found && (i != 1 || strcmp(argv[1], "default"))) {
1250                         struct remote *remote;
1251                         if (!remote_is_configured(argv[i]))
1252                                 die("No such remote or remote group: %s",
1253                                     argv[i]);
1254                         remote = remote_get(argv[i]);
1255                         string_list_append(remote->name, remote_group.list);
1256                 }
1257         }
1259         if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
1260                 result = for_each_remote(get_one_remote_for_update, &list);
1262         for (i = 0; i < list.nr; i++) {
1263                 int err = fetch_remote(list.items[i].string);
1264                 result |= err;
1265                 if (!err && prune)
1266                         result |= prune_remote(list.items[i].string, 0);
1267         }
1269         /* all names were strdup()ed or strndup()ed */
1270         list.strdup_strings = 1;
1271         string_list_clear(&list, 0);
1273         return result;
1276 static int get_one_entry(struct remote *remote, void *priv)
1278         struct string_list *list = priv;
1279         struct strbuf url_buf = STRBUF_INIT;
1280         const char **url;
1281         int i, url_nr;
1283         if (remote->url_nr > 0) {
1284                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1285                 string_list_append(remote->name, list)->util =
1286                                 strbuf_detach(&url_buf, NULL);
1287         } else
1288                 string_list_append(remote->name, list)->util = NULL;
1289         if (remote->pushurl_nr) {
1290                 url = remote->pushurl;
1291                 url_nr = remote->pushurl_nr;
1292         } else {
1293                 url = remote->url;
1294                 url_nr = remote->url_nr;
1295         }
1296         for (i = 0; i < url_nr; i++)
1297         {
1298                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1299                 string_list_append(remote->name, list)->util =
1300                                 strbuf_detach(&url_buf, NULL);
1301         }
1303         return 0;
1306 static int show_all(void)
1308         struct string_list list = { NULL, 0, 0 };
1309         int result;
1311         list.strdup_strings = 1;
1312         result = for_each_remote(get_one_entry, &list);
1314         if (!result) {
1315                 int i;
1317                 sort_string_list(&list);
1318                 for (i = 0; i < list.nr; i++) {
1319                         struct string_list_item *item = list.items + i;
1320                         if (verbose)
1321                                 printf("%s\t%s\n", item->string,
1322                                         item->util ? (const char *)item->util : "");
1323                         else {
1324                                 if (i && !strcmp((item - 1)->string, item->string))
1325                                         continue;
1326                                 printf("%s\n", item->string);
1327                         }
1328                 }
1329         }
1330         string_list_clear(&list, 1);
1331         return result;
1334 int cmd_remote(int argc, const char **argv, const char *prefix)
1336         struct option options[] = {
1337                 OPT__VERBOSE(&verbose),
1338                 OPT_END()
1339         };
1340         int result;
1342         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1343                 PARSE_OPT_STOP_AT_NON_OPTION);
1345         if (argc < 1)
1346                 result = show_all();
1347         else if (!strcmp(argv[0], "add"))
1348                 result = add(argc, argv);
1349         else if (!strcmp(argv[0], "rename"))
1350                 result = mv(argc, argv);
1351         else if (!strcmp(argv[0], "rm"))
1352                 result = rm(argc, argv);
1353         else if (!strcmp(argv[0], "set-head"))
1354                 result = set_head(argc, argv);
1355         else if (!strcmp(argv[0], "show"))
1356                 result = show(argc, argv);
1357         else if (!strcmp(argv[0], "prune"))
1358                 result = prune(argc, argv);
1359         else if (!strcmp(argv[0], "update"))
1360                 result = update(argc, argv);
1361         else {
1362                 error("Unknown subcommand: %s", argv[0]);
1363                 usage_with_options(builtin_remote_usage, options);
1364         }
1366         return result ? 1 : 0;