10 #include "transport.h"
12 static const char fetch_usage[] = "git-fetch [-a | --append] [--upload-pack <upload-pack>] [-f | --force] [--no-tags] [-t | --tags] [-k | --keep] [-u | --update-head-ok] [--depth <depth>] [-v | --verbose] [<repository> <refspec>...]";
14 static int append, force, tags, no_tags, update_head_ok, verbose, quiet;
15 static char *default_rla = NULL;
16 static struct transport *transport;
18 static void unlock_pack(void)
21 transport_unlock_pack(transport);
24 static void unlock_pack_on_signal(int signo)
27 signal(SIGINT, SIG_DFL);
31 static void add_merge_config(struct ref **head,
32 struct ref *remote_refs,
33 struct branch *branch,
38 for (i = 0; i < branch->merge_nr; i++) {
39 struct ref *rm, **old_tail = *tail;
40 struct refspec refspec;
42 for (rm = *head; rm; rm = rm->next) {
43 if (branch_merge_matches(branch, i, rm->name)) {
51 /* Not fetched to a tracking branch? We need to fetch
52 * it anyway to allow this branch's "branch.$name.merge"
53 * to be honored by git-pull.
55 refspec.src = branch->merge[i]->src;
59 get_fetch_map(remote_refs, &refspec, tail);
60 for (rm = *old_tail; rm; rm = rm->next)
65 static struct ref *get_ref_map(struct transport *transport,
66 struct refspec *refs, int ref_count, int tags,
71 struct ref *ref_map = NULL;
72 struct ref **tail = &ref_map;
74 struct ref *remote_refs = transport_get_remote_refs(transport);
76 if (ref_count || tags) {
77 for (i = 0; i < ref_count; i++) {
78 get_fetch_map(remote_refs, &refs[i], &tail);
79 if (refs[i].dst && refs[i].dst[0])
82 /* Merge everything on the command line, but not --tags */
83 for (rm = ref_map; rm; rm = rm->next)
86 struct refspec refspec;
87 refspec.src = "refs/tags/";
88 refspec.dst = "refs/tags/";
91 get_fetch_map(remote_refs, &refspec, &tail);
94 /* Use the defaults */
95 struct remote *remote = transport->remote;
96 struct branch *branch = branch_get(NULL);
97 int has_merge = branch_has_merge_config(branch);
98 if (remote && (remote->fetch_refspec_nr || has_merge)) {
99 for (i = 0; i < remote->fetch_refspec_nr; i++) {
100 get_fetch_map(remote_refs, &remote->fetch[i], &tail);
101 if (remote->fetch[i].dst &&
102 remote->fetch[i].dst[0])
104 if (!i && !has_merge && ref_map &&
105 !remote->fetch[0].pattern)
109 * if the remote we're fetching from is the same
110 * as given in branch.<name>.remote, we add the
111 * ref given in branch.<name>.merge, too.
113 if (has_merge && !strcmp(branch->remote_name,
115 add_merge_config(&ref_map, remote_refs, branch, &tail);
117 ref_map = get_remote_ref(remote_refs, "HEAD");
121 ref_remove_duplicates(ref_map);
126 static void show_new(enum object_type type, unsigned char *sha1_new)
128 fprintf(stderr, " %s: %s\n", typename(type),
129 find_unique_abbrev(sha1_new, DEFAULT_ABBREV));
132 static int s_update_ref(const char *action,
137 char *rla = getenv("GIT_REFLOG_ACTION");
138 static struct ref_lock *lock;
142 snprintf(msg, sizeof(msg), "%s: %s", rla, action);
143 lock = lock_any_ref_for_update(ref->name,
144 check_old ? ref->old_sha1 : NULL, 0);
147 if (write_ref_sha1(lock, ref->new_sha1, msg) < 0)
152 static int update_local_ref(struct ref *ref,
156 char oldh[41], newh[41];
157 struct commit *current = NULL, *updated;
158 enum object_type type;
159 struct branch *current_branch = branch_get(NULL);
161 type = sha1_object_info(ref->new_sha1, NULL);
163 die("object %s not found", sha1_to_hex(ref->new_sha1));
168 fprintf(stderr, "* fetched %s\n", note);
169 show_new(type, ref->new_sha1);
174 if (!hashcmp(ref->old_sha1, ref->new_sha1)) {
176 fprintf(stderr, "* %s: same as %s\n",
178 show_new(type, ref->new_sha1);
183 if (current_branch &&
184 !strcmp(ref->name, current_branch->name) &&
185 !(update_head_ok || is_bare_repository()) &&
186 !is_null_sha1(ref->old_sha1)) {
188 * If this is the head, and it's not okay to update
189 * the head, and the old value of the head isn't empty...
192 " * %s: Cannot fetch into the current branch.\n",
197 if (!is_null_sha1(ref->old_sha1) &&
198 !prefixcmp(ref->name, "refs/tags/")) {
199 fprintf(stderr, "* %s: updating with %s\n",
201 show_new(type, ref->new_sha1);
202 return s_update_ref("updating tag", ref, 0);
205 current = lookup_commit_reference_gently(ref->old_sha1, 1);
206 updated = lookup_commit_reference_gently(ref->new_sha1, 1);
207 if (!current || !updated) {
209 if (!strncmp(ref->name, "refs/tags/", 10))
212 msg = "storing head";
213 fprintf(stderr, "* %s: storing %s\n",
215 show_new(type, ref->new_sha1);
216 return s_update_ref(msg, ref, 0);
219 strcpy(oldh, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
220 strcpy(newh, find_unique_abbrev(ref->new_sha1, DEFAULT_ABBREV));
222 if (in_merge_bases(current, &updated, 1)) {
223 fprintf(stderr, "* %s: fast forward to %s\n",
225 fprintf(stderr, " old..new: %s..%s\n", oldh, newh);
226 return s_update_ref("fast forward", ref, 1);
228 if (!force && !ref->force) {
230 "* %s: not updating to non-fast forward %s\n",
233 " old...new: %s...%s\n", oldh, newh);
237 "* %s: forcing update to non-fast forward %s\n",
239 fprintf(stderr, " old...new: %s...%s\n", oldh, newh);
240 return s_update_ref("forced-update", ref, 1);
243 static void store_updated_refs(const char *url, struct ref *ref_map)
246 struct commit *commit;
247 int url_len, i, note_len;
249 const char *what, *kind;
252 fp = fopen(git_path("FETCH_HEAD"), "a");
253 for (rm = ref_map; rm; rm = rm->next) {
254 struct ref *ref = NULL;
257 ref = xcalloc(1, sizeof(*ref) + strlen(rm->peer_ref->name) + 1);
258 strcpy(ref->name, rm->peer_ref->name);
259 hashcpy(ref->old_sha1, rm->peer_ref->old_sha1);
260 hashcpy(ref->new_sha1, rm->old_sha1);
261 ref->force = rm->peer_ref->force;
264 commit = lookup_commit_reference_gently(rm->old_sha1, 1);
268 if (!strcmp(rm->name, "HEAD")) {
272 else if (!prefixcmp(rm->name, "refs/heads/")) {
274 what = rm->name + 11;
276 else if (!prefixcmp(rm->name, "refs/tags/")) {
278 what = rm->name + 10;
280 else if (!prefixcmp(rm->name, "refs/remotes/")) {
281 kind = "remote branch";
282 what = rm->name + 13;
289 url_len = strlen(url);
290 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
293 if (4 < i && !strncmp(".git", url + i - 3, 4))
299 note_len += sprintf(note + note_len, "%s ",
301 note_len += sprintf(note + note_len, "'%s' of ", what);
303 note_len += sprintf(note + note_len, "%.*s", url_len, url);
304 fprintf(fp, "%s\t%s\t%s\n",
305 sha1_to_hex(commit ? commit->object.sha1 :
307 rm->merge ? "" : "not-for-merge",
311 update_local_ref(ref, note, verbose);
316 static int fetch_refs(struct transport *transport, struct ref *ref_map)
318 int ret = transport_fetch_refs(transport, ref_map);
320 store_updated_refs(transport->url, ref_map);
321 transport_unlock_pack(transport);
325 static int add_existing(const char *refname, const unsigned char *sha1,
326 int flag, void *cbdata)
328 struct path_list *list = (struct path_list *)cbdata;
329 path_list_insert(refname, list);
333 static struct ref *find_non_local_tags(struct transport *transport,
334 struct ref *fetch_map)
336 static struct path_list existing_refs = { NULL, 0, 0, 0 };
337 struct path_list new_refs = { NULL, 0, 0, 1 };
340 unsigned char *ref_sha1;
342 struct ref *rm = NULL;
343 struct ref *ref_map = NULL;
344 struct ref **tail = &ref_map;
347 for_each_ref(add_existing, &existing_refs);
348 for (ref = transport_get_remote_refs(transport); ref; ref = ref->next) {
349 if (prefixcmp(ref->name, "refs/tags"))
352 ref_name = xstrdup(ref->name);
353 ref_name_len = strlen(ref_name);
354 ref_sha1 = ref->old_sha1;
356 if (!strcmp(ref_name + ref_name_len - 3, "^{}")) {
357 ref_name[ref_name_len - 3] = 0;
358 tag_ref = transport_get_remote_refs(transport);
360 if (!strcmp(tag_ref->name, ref_name)) {
361 ref_sha1 = tag_ref->old_sha1;
364 tag_ref = tag_ref->next;
368 if (!path_list_has_path(&existing_refs, ref_name) &&
369 !path_list_has_path(&new_refs, ref_name) &&
370 lookup_object(ref->old_sha1)) {
371 fprintf(stderr, "Auto-following %s\n",
374 path_list_insert(ref_name, &new_refs);
376 rm = alloc_ref(strlen(ref_name) + 1);
377 strcpy(rm->name, ref_name);
378 rm->peer_ref = alloc_ref(strlen(ref_name) + 1);
379 strcpy(rm->peer_ref->name, ref_name);
380 hashcpy(rm->old_sha1, ref_sha1);
391 static int do_fetch(struct transport *transport,
392 struct refspec *refs, int ref_count)
394 struct ref *ref_map, *fetch_map;
396 int autotags = (transport->remote->fetch_tags == 1);
397 if (transport->remote->fetch_tags == 2 && !no_tags)
399 if (transport->remote->fetch_tags == -1)
402 if (!transport->get_refs_list || !transport->fetch)
403 die("Don't know how to fetch from %s", transport->url);
405 /* if not appending, truncate FETCH_HEAD */
407 fclose(fopen(git_path("FETCH_HEAD"), "w"));
409 ref_map = get_ref_map(transport, refs, ref_count, tags, &autotags);
411 for (rm = ref_map; rm; rm = rm->next) {
413 read_ref(rm->peer_ref->name, rm->peer_ref->old_sha1);
416 if (fetch_refs(transport, ref_map)) {
423 /* if neither --no-tags nor --tags was specified, do automated tag
425 if (!(tags || no_tags) && autotags) {
426 ref_map = find_non_local_tags(transport, fetch_map);
428 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
429 fetch_refs(transport, ref_map);
434 free_refs(fetch_map);
439 static void set_option(const char *name, const char *value)
441 int r = transport_set_option(transport, name, value);
443 die("Option \"%s\" value \"%s\" is not valid for %s\n",
444 name, value, transport->url);
446 warning("Option \"%s\" is ignored for %s\n",
447 name, transport->url);
450 int cmd_fetch(int argc, const char **argv, const char *prefix)
452 struct remote *remote;
453 int i, j, rla_offset;
454 static const char **refs = NULL;
457 const char *depth = NULL, *upload_pack = NULL;
460 for (i = 1; i < argc; i++) {
461 const char *arg = argv[i];
462 cmd_len += strlen(arg);
466 if (!strcmp(arg, "--append") || !strcmp(arg, "-a")) {
470 if (!prefixcmp(arg, "--upload-pack=")) {
471 upload_pack = arg + 14;
474 if (!strcmp(arg, "--upload-pack")) {
478 upload_pack = argv[i];
481 if (!strcmp(arg, "--force") || !strcmp(arg, "-f")) {
485 if (!strcmp(arg, "--no-tags")) {
489 if (!strcmp(arg, "--tags") || !strcmp(arg, "-t")) {
493 if (!strcmp(arg, "--keep") || !strcmp(arg, "-k")) {
497 if (!strcmp(arg, "--update-head-ok") || !strcmp(arg, "-u")) {
501 if (!prefixcmp(arg, "--depth=")) {
505 if (!strcmp(arg, "--depth")) {
512 if (!strcmp(arg, "--quiet")) {
516 if (!strcmp(arg, "--verbose") || !strcmp(arg, "-v")) {
523 for (j = i; j < argc; j++)
524 cmd_len += strlen(argv[j]);
526 default_rla = xmalloc(cmd_len + 5 + argc + 1);
527 sprintf(default_rla, "fetch");
528 rla_offset = strlen(default_rla);
529 for (j = 1; j < argc; j++) {
530 sprintf(default_rla + rla_offset, " %s", argv[j]);
531 rla_offset += strlen(argv[j]) + 1;
535 remote = remote_get(NULL);
537 remote = remote_get(argv[i++]);
539 transport = transport_get(remote, remote->url[0]);
541 transport->verbose = 1;
543 transport->verbose = -1;
545 set_option(TRANS_OPT_UPLOADPACK, upload_pack);
547 set_option(TRANS_OPT_KEEP, "yes");
549 set_option(TRANS_OPT_DEPTH, depth);
552 die("Where do you want to fetch from today?");
556 refs = xcalloc(argc - i + 1, sizeof(const char *));
558 if (!strcmp(argv[i], "tag")) {
561 ref = xmalloc(strlen(argv[i]) * 2 + 22);
562 strcpy(ref, "refs/tags/");
563 strcat(ref, argv[i]);
564 strcat(ref, ":refs/tags/");
565 strcat(ref, argv[i]);
575 signal(SIGINT, unlock_pack_on_signal);
577 return do_fetch(transport, parse_ref_spec(ref_nr, refs), ref_nr);