builtin-commit: add --date option
[git/vmiklos.git] / builtin-fetch.c
blob5b7db616dcf5cc3bb178b2c4dbb989322c6b2374
1 /*
2 * "git fetch"
3 */
4 #include "cache.h"
5 #include "refs.h"
6 #include "commit.h"
7 #include "builtin.h"
8 #include "string-list.h"
9 #include "remote.h"
10 #include "transport.h"
11 #include "run-command.h"
12 #include "parse-options.h"
13 #include "sigchain.h"
15 static const char * const builtin_fetch_usage[] = {
16 "git fetch [options] [<repository> <refspec>...]",
17 "git fetch [options] <group>",
18 "git fetch --multiple [options] [<repository> | <group>]...",
19 "git fetch --all [options]",
20 NULL
23 enum {
24 TAGS_UNSET = 0,
25 TAGS_DEFAULT = 1,
26 TAGS_SET = 2
29 static int all, append, dry_run, force, keep, multiple, prune, update_head_ok, verbosity;
30 static int tags = TAGS_DEFAULT;
31 static const char *depth;
32 static const char *upload_pack;
33 static struct strbuf default_rla = STRBUF_INIT;
34 static struct transport *transport;
36 static struct option builtin_fetch_options[] = {
37 OPT__VERBOSITY(&verbosity),
38 OPT_BOOLEAN(0, "all", &all,
39 "fetch from all remotes"),
40 OPT_BOOLEAN('a', "append", &append,
41 "append to .git/FETCH_HEAD instead of overwriting"),
42 OPT_STRING(0, "upload-pack", &upload_pack, "PATH",
43 "path to upload pack on remote end"),
44 OPT_BOOLEAN('f', "force", &force,
45 "force overwrite of local branch"),
46 OPT_BOOLEAN('m', "multiple", &multiple,
47 "fetch from multiple remotes"),
48 OPT_SET_INT('t', "tags", &tags,
49 "fetch all tags and associated objects", TAGS_SET),
50 OPT_SET_INT('n', NULL, &tags,
51 "do not fetch all tags (--no-tags)", TAGS_UNSET),
52 OPT_BOOLEAN('p', "prune", &prune,
53 "prune tracking branches no longer on remote"),
54 OPT_BOOLEAN(0, "dry-run", &dry_run,
55 "dry run"),
56 OPT_BOOLEAN('k', "keep", &keep, "keep downloaded pack"),
57 OPT_BOOLEAN('u', "update-head-ok", &update_head_ok,
58 "allow updating of HEAD ref"),
59 OPT_STRING(0, "depth", &depth, "DEPTH",
60 "deepen history of shallow clone"),
61 OPT_END()
64 static void unlock_pack(void)
66 if (transport)
67 transport_unlock_pack(transport);
70 static void unlock_pack_on_signal(int signo)
72 unlock_pack();
73 sigchain_pop(signo);
74 raise(signo);
77 static void add_merge_config(struct ref **head,
78 const struct ref *remote_refs,
79 struct branch *branch,
80 struct ref ***tail)
82 int i;
84 for (i = 0; i < branch->merge_nr; i++) {
85 struct ref *rm, **old_tail = *tail;
86 struct refspec refspec;
88 for (rm = *head; rm; rm = rm->next) {
89 if (branch_merge_matches(branch, i, rm->name)) {
90 rm->merge = 1;
91 break;
94 if (rm)
95 continue;
98 * Not fetched to a tracking branch? We need to fetch
99 * it anyway to allow this branch's "branch.$name.merge"
100 * to be honored by 'git pull', but we do not have to
101 * fail if branch.$name.merge is misconfigured to point
102 * at a nonexisting branch. If we were indeed called by
103 * 'git pull', it will notice the misconfiguration because
104 * there is no entry in the resulting FETCH_HEAD marked
105 * for merging.
107 refspec.src = branch->merge[i]->src;
108 refspec.dst = NULL;
109 refspec.pattern = 0;
110 refspec.force = 0;
111 get_fetch_map(remote_refs, &refspec, tail, 1);
112 for (rm = *old_tail; rm; rm = rm->next)
113 rm->merge = 1;
117 static void find_non_local_tags(struct transport *transport,
118 struct ref **head,
119 struct ref ***tail);
121 static struct ref *get_ref_map(struct transport *transport,
122 struct refspec *refs, int ref_count, int tags,
123 int *autotags)
125 int i;
126 struct ref *rm;
127 struct ref *ref_map = NULL;
128 struct ref **tail = &ref_map;
130 const struct ref *remote_refs = transport_get_remote_refs(transport);
132 if (ref_count || tags == TAGS_SET) {
133 for (i = 0; i < ref_count; i++) {
134 get_fetch_map(remote_refs, &refs[i], &tail, 0);
135 if (refs[i].dst && refs[i].dst[0])
136 *autotags = 1;
138 /* Merge everything on the command line, but not --tags */
139 for (rm = ref_map; rm; rm = rm->next)
140 rm->merge = 1;
141 if (tags == TAGS_SET)
142 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
143 } else {
144 /* Use the defaults */
145 struct remote *remote = transport->remote;
146 struct branch *branch = branch_get(NULL);
147 int has_merge = branch_has_merge_config(branch);
148 if (remote && (remote->fetch_refspec_nr || has_merge)) {
149 for (i = 0; i < remote->fetch_refspec_nr; i++) {
150 get_fetch_map(remote_refs, &remote->fetch[i], &tail, 0);
151 if (remote->fetch[i].dst &&
152 remote->fetch[i].dst[0])
153 *autotags = 1;
154 if (!i && !has_merge && ref_map &&
155 !remote->fetch[0].pattern)
156 ref_map->merge = 1;
159 * if the remote we're fetching from is the same
160 * as given in branch.<name>.remote, we add the
161 * ref given in branch.<name>.merge, too.
163 if (has_merge &&
164 !strcmp(branch->remote_name, remote->name))
165 add_merge_config(&ref_map, remote_refs, branch, &tail);
166 } else {
167 ref_map = get_remote_ref(remote_refs, "HEAD");
168 if (!ref_map)
169 die("Couldn't find remote ref HEAD");
170 ref_map->merge = 1;
171 tail = &ref_map->next;
174 if (tags == TAGS_DEFAULT && *autotags)
175 find_non_local_tags(transport, &ref_map, &tail);
176 ref_remove_duplicates(ref_map);
178 return ref_map;
181 #define STORE_REF_ERROR_OTHER 1
182 #define STORE_REF_ERROR_DF_CONFLICT 2
184 static int s_update_ref(const char *action,
185 struct ref *ref,
186 int check_old)
188 char msg[1024];
189 char *rla = getenv("GIT_REFLOG_ACTION");
190 static struct ref_lock *lock;
192 if (dry_run)
193 return 0;
194 if (!rla)
195 rla = default_rla.buf;
196 snprintf(msg, sizeof(msg), "%s: %s", rla, action);
197 lock = lock_any_ref_for_update(ref->name,
198 check_old ? ref->old_sha1 : NULL, 0);
199 if (!lock)
200 return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
201 STORE_REF_ERROR_OTHER;
202 if (write_ref_sha1(lock, ref->new_sha1, msg) < 0)
203 return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
204 STORE_REF_ERROR_OTHER;
205 return 0;
208 #define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
209 #define REFCOL_WIDTH 10
211 static int update_local_ref(struct ref *ref,
212 const char *remote,
213 char *display)
215 struct commit *current = NULL, *updated;
216 enum object_type type;
217 struct branch *current_branch = branch_get(NULL);
218 const char *pretty_ref = prettify_refname(ref->name);
220 *display = 0;
221 type = sha1_object_info(ref->new_sha1, NULL);
222 if (type < 0)
223 die("object %s not found", sha1_to_hex(ref->new_sha1));
225 if (!hashcmp(ref->old_sha1, ref->new_sha1)) {
226 if (verbosity > 0)
227 sprintf(display, "= %-*s %-*s -> %s", SUMMARY_WIDTH,
228 "[up to date]", REFCOL_WIDTH, remote,
229 pretty_ref);
230 return 0;
233 if (current_branch &&
234 !strcmp(ref->name, current_branch->name) &&
235 !(update_head_ok || is_bare_repository()) &&
236 !is_null_sha1(ref->old_sha1)) {
238 * If this is the head, and it's not okay to update
239 * the head, and the old value of the head isn't empty...
241 sprintf(display, "! %-*s %-*s -> %s (can't fetch in current branch)",
242 SUMMARY_WIDTH, "[rejected]", REFCOL_WIDTH, remote,
243 pretty_ref);
244 return 1;
247 if (!is_null_sha1(ref->old_sha1) &&
248 !prefixcmp(ref->name, "refs/tags/")) {
249 int r;
250 r = s_update_ref("updating tag", ref, 0);
251 sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : '-',
252 SUMMARY_WIDTH, "[tag update]", REFCOL_WIDTH, remote,
253 pretty_ref, r ? " (unable to update local ref)" : "");
254 return r;
257 current = lookup_commit_reference_gently(ref->old_sha1, 1);
258 updated = lookup_commit_reference_gently(ref->new_sha1, 1);
259 if (!current || !updated) {
260 const char *msg;
261 const char *what;
262 int r;
263 if (!strncmp(ref->name, "refs/tags/", 10)) {
264 msg = "storing tag";
265 what = "[new tag]";
267 else {
268 msg = "storing head";
269 what = "[new branch]";
272 r = s_update_ref(msg, ref, 0);
273 sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : '*',
274 SUMMARY_WIDTH, what, REFCOL_WIDTH, remote, pretty_ref,
275 r ? " (unable to update local ref)" : "");
276 return r;
279 if (in_merge_bases(current, &updated, 1)) {
280 char quickref[83];
281 int r;
282 strcpy(quickref, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
283 strcat(quickref, "..");
284 strcat(quickref, find_unique_abbrev(ref->new_sha1, DEFAULT_ABBREV));
285 r = s_update_ref("fast-forward", ref, 1);
286 sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : ' ',
287 SUMMARY_WIDTH, quickref, REFCOL_WIDTH, remote,
288 pretty_ref, r ? " (unable to update local ref)" : "");
289 return r;
290 } else if (force || ref->force) {
291 char quickref[84];
292 int r;
293 strcpy(quickref, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
294 strcat(quickref, "...");
295 strcat(quickref, find_unique_abbrev(ref->new_sha1, DEFAULT_ABBREV));
296 r = s_update_ref("forced-update", ref, 1);
297 sprintf(display, "%c %-*s %-*s -> %s (%s)", r ? '!' : '+',
298 SUMMARY_WIDTH, quickref, REFCOL_WIDTH, remote,
299 pretty_ref,
300 r ? "unable to update local ref" : "forced update");
301 return r;
302 } else {
303 sprintf(display, "! %-*s %-*s -> %s (non-fast-forward)",
304 SUMMARY_WIDTH, "[rejected]", REFCOL_WIDTH, remote,
305 pretty_ref);
306 return 1;
310 static int store_updated_refs(const char *raw_url, const char *remote_name,
311 struct ref *ref_map)
313 FILE *fp;
314 struct commit *commit;
315 int url_len, i, note_len, shown_url = 0, rc = 0;
316 char note[1024];
317 const char *what, *kind;
318 struct ref *rm;
319 char *url, *filename = dry_run ? "/dev/null" : git_path("FETCH_HEAD");
321 fp = fopen(filename, "a");
322 if (!fp)
323 return error("cannot open %s: %s\n", filename, strerror(errno));
325 url = transport_anonymize_url(raw_url);
326 for (rm = ref_map; rm; rm = rm->next) {
327 struct ref *ref = NULL;
329 if (rm->peer_ref) {
330 ref = xcalloc(1, sizeof(*ref) + strlen(rm->peer_ref->name) + 1);
331 strcpy(ref->name, rm->peer_ref->name);
332 hashcpy(ref->old_sha1, rm->peer_ref->old_sha1);
333 hashcpy(ref->new_sha1, rm->old_sha1);
334 ref->force = rm->peer_ref->force;
337 commit = lookup_commit_reference_gently(rm->old_sha1, 1);
338 if (!commit)
339 rm->merge = 0;
341 if (!strcmp(rm->name, "HEAD")) {
342 kind = "";
343 what = "";
345 else if (!prefixcmp(rm->name, "refs/heads/")) {
346 kind = "branch";
347 what = rm->name + 11;
349 else if (!prefixcmp(rm->name, "refs/tags/")) {
350 kind = "tag";
351 what = rm->name + 10;
353 else if (!prefixcmp(rm->name, "refs/remotes/")) {
354 kind = "remote branch";
355 what = rm->name + 13;
357 else {
358 kind = "";
359 what = rm->name;
362 url_len = strlen(url);
363 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
365 url_len = i + 1;
366 if (4 < i && !strncmp(".git", url + i - 3, 4))
367 url_len = i - 3;
369 note_len = 0;
370 if (*what) {
371 if (*kind)
372 note_len += sprintf(note + note_len, "%s ",
373 kind);
374 note_len += sprintf(note + note_len, "'%s' of ", what);
376 note[note_len] = '\0';
377 fprintf(fp, "%s\t%s\t%s",
378 sha1_to_hex(commit ? commit->object.sha1 :
379 rm->old_sha1),
380 rm->merge ? "" : "not-for-merge",
381 note);
382 for (i = 0; i < url_len; ++i)
383 if ('\n' == url[i])
384 fputs("\\n", fp);
385 else
386 fputc(url[i], fp);
387 fputc('\n', fp);
389 if (ref)
390 rc |= update_local_ref(ref, what, note);
391 else
392 sprintf(note, "* %-*s %-*s -> FETCH_HEAD",
393 SUMMARY_WIDTH, *kind ? kind : "branch",
394 REFCOL_WIDTH, *what ? what : "HEAD");
395 if (*note) {
396 if (verbosity >= 0 && !shown_url) {
397 fprintf(stderr, "From %.*s\n",
398 url_len, url);
399 shown_url = 1;
401 if (verbosity >= 0)
402 fprintf(stderr, " %s\n", note);
405 free(url);
406 fclose(fp);
407 if (rc & STORE_REF_ERROR_DF_CONFLICT)
408 error("some local refs could not be updated; try running\n"
409 " 'git remote prune %s' to remove any old, conflicting "
410 "branches", remote_name);
411 return rc;
415 * We would want to bypass the object transfer altogether if
416 * everything we are going to fetch already exists and is connected
417 * locally.
419 * The refs we are going to fetch are in ref_map. If running
421 * $ git rev-list --objects --stdin --not --all
423 * (feeding all the refs in ref_map on its standard input)
424 * does not error out, that means everything reachable from the
425 * refs we are going to fetch exists and is connected to some of
426 * our existing refs.
428 static int quickfetch(struct ref *ref_map)
430 struct child_process revlist;
431 struct ref *ref;
432 int err;
433 const char *argv[] = {"rev-list",
434 "--quiet", "--objects", "--stdin", "--not", "--all", NULL};
437 * If we are deepening a shallow clone we already have these
438 * objects reachable. Running rev-list here will return with
439 * a good (0) exit status and we'll bypass the fetch that we
440 * really need to perform. Claiming failure now will ensure
441 * we perform the network exchange to deepen our history.
443 if (depth)
444 return -1;
446 if (!ref_map)
447 return 0;
449 memset(&revlist, 0, sizeof(revlist));
450 revlist.argv = argv;
451 revlist.git_cmd = 1;
452 revlist.no_stdout = 1;
453 revlist.no_stderr = 1;
454 revlist.in = -1;
456 err = start_command(&revlist);
457 if (err) {
458 error("could not run rev-list");
459 return err;
463 * If rev-list --stdin encounters an unknown commit, it terminates,
464 * which will cause SIGPIPE in the write loop below.
466 sigchain_push(SIGPIPE, SIG_IGN);
468 for (ref = ref_map; ref; ref = ref->next) {
469 if (write_in_full(revlist.in, sha1_to_hex(ref->old_sha1), 40) < 0 ||
470 write_str_in_full(revlist.in, "\n") < 0) {
471 if (errno != EPIPE && errno != EINVAL)
472 error("failed write to rev-list: %s", strerror(errno));
473 err = -1;
474 break;
478 if (close(revlist.in)) {
479 error("failed to close rev-list's stdin: %s", strerror(errno));
480 err = -1;
483 sigchain_pop(SIGPIPE);
485 return finish_command(&revlist) || err;
488 static int fetch_refs(struct transport *transport, struct ref *ref_map)
490 int ret = quickfetch(ref_map);
491 if (ret)
492 ret = transport_fetch_refs(transport, ref_map);
493 if (!ret)
494 ret |= store_updated_refs(transport->url,
495 transport->remote->name,
496 ref_map);
497 transport_unlock_pack(transport);
498 return ret;
501 static int prune_refs(struct transport *transport, struct ref *ref_map)
503 int result = 0;
504 struct ref *ref, *stale_refs = get_stale_heads(transport->remote, ref_map);
505 const char *dangling_msg = dry_run
506 ? " (%s will become dangling)\n"
507 : " (%s has become dangling)\n";
509 for (ref = stale_refs; ref; ref = ref->next) {
510 if (!dry_run)
511 result |= delete_ref(ref->name, NULL, 0);
512 if (verbosity >= 0) {
513 fprintf(stderr, " x %-*s %-*s -> %s\n",
514 SUMMARY_WIDTH, "[deleted]",
515 REFCOL_WIDTH, "(none)", prettify_refname(ref->name));
516 warn_dangling_symref(stderr, dangling_msg, ref->name);
519 free_refs(stale_refs);
520 return result;
523 static int add_existing(const char *refname, const unsigned char *sha1,
524 int flag, void *cbdata)
526 struct string_list *list = (struct string_list *)cbdata;
527 struct string_list_item *item = string_list_insert(refname, list);
528 item->util = (void *)sha1;
529 return 0;
532 static int will_fetch(struct ref **head, const unsigned char *sha1)
534 struct ref *rm = *head;
535 while (rm) {
536 if (!hashcmp(rm->old_sha1, sha1))
537 return 1;
538 rm = rm->next;
540 return 0;
543 struct tag_data {
544 struct ref **head;
545 struct ref ***tail;
548 static int add_to_tail(struct string_list_item *item, void *cb_data)
550 struct tag_data *data = (struct tag_data *)cb_data;
551 struct ref *rm = NULL;
553 /* We have already decided to ignore this item */
554 if (!item->util)
555 return 0;
557 rm = alloc_ref(item->string);
558 rm->peer_ref = alloc_ref(item->string);
559 hashcpy(rm->old_sha1, item->util);
561 **data->tail = rm;
562 *data->tail = &rm->next;
564 return 0;
567 static void find_non_local_tags(struct transport *transport,
568 struct ref **head,
569 struct ref ***tail)
571 struct string_list existing_refs = { NULL, 0, 0, 0 };
572 struct string_list remote_refs = { NULL, 0, 0, 0 };
573 struct tag_data data = {head, tail};
574 const struct ref *ref;
575 struct string_list_item *item = NULL;
577 for_each_ref(add_existing, &existing_refs);
578 for (ref = transport_get_remote_refs(transport); ref; ref = ref->next) {
579 if (prefixcmp(ref->name, "refs/tags"))
580 continue;
583 * The peeled ref always follows the matching base
584 * ref, so if we see a peeled ref that we don't want
585 * to fetch then we can mark the ref entry in the list
586 * as one to ignore by setting util to NULL.
588 if (!strcmp(ref->name + strlen(ref->name) - 3, "^{}")) {
589 if (item && !has_sha1_file(ref->old_sha1) &&
590 !will_fetch(head, ref->old_sha1) &&
591 !has_sha1_file(item->util) &&
592 !will_fetch(head, item->util))
593 item->util = NULL;
594 item = NULL;
595 continue;
599 * If item is non-NULL here, then we previously saw a
600 * ref not followed by a peeled reference, so we need
601 * to check if it is a lightweight tag that we want to
602 * fetch.
604 if (item && !has_sha1_file(item->util) &&
605 !will_fetch(head, item->util))
606 item->util = NULL;
608 item = NULL;
610 /* skip duplicates and refs that we already have */
611 if (string_list_has_string(&remote_refs, ref->name) ||
612 string_list_has_string(&existing_refs, ref->name))
613 continue;
615 item = string_list_insert(ref->name, &remote_refs);
616 item->util = (void *)ref->old_sha1;
618 string_list_clear(&existing_refs, 0);
621 * We may have a final lightweight tag that needs to be
622 * checked to see if it needs fetching.
624 if (item && !has_sha1_file(item->util) &&
625 !will_fetch(head, item->util))
626 item->util = NULL;
629 * For all the tags in the remote_refs string list, call
630 * add_to_tail to add them to the list of refs to be fetched
632 for_each_string_list(add_to_tail, &remote_refs, &data);
634 string_list_clear(&remote_refs, 0);
637 static void check_not_current_branch(struct ref *ref_map)
639 struct branch *current_branch = branch_get(NULL);
641 if (is_bare_repository() || !current_branch)
642 return;
644 for (; ref_map; ref_map = ref_map->next)
645 if (ref_map->peer_ref && !strcmp(current_branch->refname,
646 ref_map->peer_ref->name))
647 die("Refusing to fetch into current branch %s "
648 "of non-bare repository", current_branch->refname);
651 static int do_fetch(struct transport *transport,
652 struct refspec *refs, int ref_count)
654 struct string_list existing_refs = { NULL, 0, 0, 0 };
655 struct string_list_item *peer_item = NULL;
656 struct ref *ref_map;
657 struct ref *rm;
658 int autotags = (transport->remote->fetch_tags == 1);
660 for_each_ref(add_existing, &existing_refs);
662 if (transport->remote->fetch_tags == 2 && tags != TAGS_UNSET)
663 tags = TAGS_SET;
664 if (transport->remote->fetch_tags == -1)
665 tags = TAGS_UNSET;
667 if (!transport->get_refs_list || !transport->fetch)
668 die("Don't know how to fetch from %s", transport->url);
670 /* if not appending, truncate FETCH_HEAD */
671 if (!append && !dry_run) {
672 char *filename = git_path("FETCH_HEAD");
673 FILE *fp = fopen(filename, "w");
674 if (!fp)
675 return error("cannot open %s: %s\n", filename, strerror(errno));
676 fclose(fp);
679 ref_map = get_ref_map(transport, refs, ref_count, tags, &autotags);
680 if (!update_head_ok)
681 check_not_current_branch(ref_map);
683 for (rm = ref_map; rm; rm = rm->next) {
684 if (rm->peer_ref) {
685 peer_item = string_list_lookup(rm->peer_ref->name,
686 &existing_refs);
687 if (peer_item)
688 hashcpy(rm->peer_ref->old_sha1,
689 peer_item->util);
693 if (tags == TAGS_DEFAULT && autotags)
694 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
695 if (fetch_refs(transport, ref_map)) {
696 free_refs(ref_map);
697 return 1;
699 if (prune)
700 prune_refs(transport, ref_map);
701 free_refs(ref_map);
703 /* if neither --no-tags nor --tags was specified, do automated tag
704 * following ... */
705 if (tags == TAGS_DEFAULT && autotags) {
706 struct ref **tail = &ref_map;
707 ref_map = NULL;
708 find_non_local_tags(transport, &ref_map, &tail);
709 if (ref_map) {
710 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
711 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
712 fetch_refs(transport, ref_map);
714 free_refs(ref_map);
717 return 0;
720 static void set_option(const char *name, const char *value)
722 int r = transport_set_option(transport, name, value);
723 if (r < 0)
724 die("Option \"%s\" value \"%s\" is not valid for %s",
725 name, value, transport->url);
726 if (r > 0)
727 warning("Option \"%s\" is ignored for %s\n",
728 name, transport->url);
731 static int get_one_remote_for_fetch(struct remote *remote, void *priv)
733 struct string_list *list = priv;
734 if (!remote->skip_default_update)
735 string_list_append(remote->name, list);
736 return 0;
739 struct remote_group_data {
740 const char *name;
741 struct string_list *list;
744 static int get_remote_group(const char *key, const char *value, void *priv)
746 struct remote_group_data *g = priv;
748 if (!prefixcmp(key, "remotes.") &&
749 !strcmp(key + 8, g->name)) {
750 /* split list by white space */
751 int space = strcspn(value, " \t\n");
752 while (*value) {
753 if (space > 1) {
754 string_list_append(xstrndup(value, space),
755 g->list);
757 value += space + (value[space] != '\0');
758 space = strcspn(value, " \t\n");
762 return 0;
765 static int add_remote_or_group(const char *name, struct string_list *list)
767 int prev_nr = list->nr;
768 struct remote_group_data g = { name, list };
770 git_config(get_remote_group, &g);
771 if (list->nr == prev_nr) {
772 struct remote *remote;
773 if (!remote_is_configured(name))
774 return 0;
775 remote = remote_get(name);
776 string_list_append(remote->name, list);
778 return 1;
781 static int fetch_multiple(struct string_list *list)
783 int i, result = 0;
784 const char *argv[] = { "fetch", NULL, NULL, NULL, NULL, NULL, NULL };
785 int argc = 1;
787 if (dry_run)
788 argv[argc++] = "--dry-run";
789 if (prune)
790 argv[argc++] = "--prune";
791 if (verbosity >= 2)
792 argv[argc++] = "-v";
793 if (verbosity >= 1)
794 argv[argc++] = "-v";
795 else if (verbosity < 0)
796 argv[argc++] = "-q";
798 for (i = 0; i < list->nr; i++) {
799 const char *name = list->items[i].string;
800 argv[argc] = name;
801 if (verbosity >= 0)
802 printf("Fetching %s\n", name);
803 if (run_command_v_opt(argv, RUN_GIT_CMD)) {
804 error("Could not fetch %s", name);
805 result = 1;
809 return result;
812 static int fetch_one(struct remote *remote, int argc, const char **argv)
814 int i;
815 static const char **refs = NULL;
816 int ref_nr = 0;
817 int exit_code;
819 if (!remote)
820 die("Where do you want to fetch from today?");
822 transport = transport_get(remote, remote->url[0]);
823 if (verbosity >= 2)
824 transport->verbose = verbosity <= 3 ? verbosity : 3;
825 if (verbosity < 0)
826 transport->verbose = -1;
827 if (upload_pack)
828 set_option(TRANS_OPT_UPLOADPACK, upload_pack);
829 if (keep)
830 set_option(TRANS_OPT_KEEP, "yes");
831 if (depth)
832 set_option(TRANS_OPT_DEPTH, depth);
834 if (argc > 0) {
835 int j = 0;
836 refs = xcalloc(argc + 1, sizeof(const char *));
837 for (i = 0; i < argc; i++) {
838 if (!strcmp(argv[i], "tag")) {
839 char *ref;
840 i++;
841 if (i >= argc)
842 die("You need to specify a tag name.");
843 ref = xmalloc(strlen(argv[i]) * 2 + 22);
844 strcpy(ref, "refs/tags/");
845 strcat(ref, argv[i]);
846 strcat(ref, ":refs/tags/");
847 strcat(ref, argv[i]);
848 refs[j++] = ref;
849 } else
850 refs[j++] = argv[i];
852 refs[j] = NULL;
853 ref_nr = j;
856 sigchain_push_common(unlock_pack_on_signal);
857 atexit(unlock_pack);
858 exit_code = do_fetch(transport,
859 parse_fetch_refspec(ref_nr, refs), ref_nr);
860 transport_disconnect(transport);
861 transport = NULL;
862 return exit_code;
865 int cmd_fetch(int argc, const char **argv, const char *prefix)
867 int i;
868 struct string_list list = { NULL, 0, 0, 0 };
869 struct remote *remote;
870 int result = 0;
872 /* Record the command line for the reflog */
873 strbuf_addstr(&default_rla, "fetch");
874 for (i = 1; i < argc; i++)
875 strbuf_addf(&default_rla, " %s", argv[i]);
877 argc = parse_options(argc, argv, prefix,
878 builtin_fetch_options, builtin_fetch_usage, 0);
880 if (all) {
881 if (argc == 1)
882 die("fetch --all does not take a repository argument");
883 else if (argc > 1)
884 die("fetch --all does not make sense with refspecs");
885 (void) for_each_remote(get_one_remote_for_fetch, &list);
886 result = fetch_multiple(&list);
887 } else if (argc == 0) {
888 /* No arguments -- use default remote */
889 remote = remote_get(NULL);
890 result = fetch_one(remote, argc, argv);
891 } else if (multiple) {
892 /* All arguments are assumed to be remotes or groups */
893 for (i = 0; i < argc; i++)
894 if (!add_remote_or_group(argv[i], &list))
895 die("No such remote or remote group: %s", argv[i]);
896 result = fetch_multiple(&list);
897 } else {
898 /* Single remote or group */
899 (void) add_remote_or_group(argv[0], &list);
900 if (list.nr > 1) {
901 /* More than one remote */
902 if (argc > 1)
903 die("Fetching a group and specifying refspecs does not make sense");
904 result = fetch_multiple(&list);
905 } else {
906 /* Zero or one remotes */
907 remote = remote_get(argv[0]);
908 result = fetch_one(remote, argc-1, argv+1);
912 /* All names were strdup()ed or strndup()ed */
913 list.strdup_strings = 1;
914 string_list_clear(&list, 0);
916 return result;