4 * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
5 * 2008 Daniel Barkalow <barkalow@iabervon.org>
6 * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
8 * Clone a repository into a different directory that does not yet exist.
13 #include "parse-options.h"
14 #include "fetch-pack.h"
17 #include "tree-walk.h"
18 #include "unpack-trees.h"
19 #include "transport.h"
25 #include "run-command.h"
26 #include "connected.h"
30 * - respect DB_ENVIRONMENT for .git/objects.
32 * Implementation notes:
33 * - dropping use-separate-remote and no-separate-remote compatibility
36 static const char * const builtin_clone_usage[] = {
37 N_("git clone [<options>] [--] <repo> [<dir>]"),
41 static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
42 static int option_local = -1, option_no_hardlinks, option_shared, option_recursive;
43 static char *option_template, *option_depth;
44 static char *option_origin = NULL;
45 static char *option_branch = NULL;
46 static const char *real_git_dir;
47 static char *option_upload_pack = "git-upload-pack";
48 static int option_verbosity;
49 static int option_progress = -1;
50 static struct string_list option_config;
51 static struct string_list option_reference;
52 static int option_dissociate;
54 static struct option builtin_clone_options[] = {
55 OPT__VERBOSITY(&option_verbosity),
56 OPT_BOOL(0, "progress", &option_progress,
57 N_("force progress reporting")),
58 OPT_BOOL('n', "no-checkout", &option_no_checkout,
59 N_("don't create a checkout")),
60 OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")),
61 OPT_HIDDEN_BOOL(0, "naked", &option_bare,
62 N_("create a bare repository")),
63 OPT_BOOL(0, "mirror", &option_mirror,
64 N_("create a mirror repository (implies bare)")),
65 OPT_BOOL('l', "local", &option_local,
66 N_("to clone from a local repository")),
67 OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks,
68 N_("don't use local hardlinks, always copy")),
69 OPT_BOOL('s', "shared", &option_shared,
70 N_("setup as shared repository")),
71 OPT_BOOL(0, "recursive", &option_recursive,
72 N_("initialize submodules in the clone")),
73 OPT_BOOL(0, "recurse-submodules", &option_recursive,
74 N_("initialize submodules in the clone")),
75 OPT_STRING(0, "template", &option_template, N_("template-directory"),
76 N_("directory from which templates will be used")),
77 OPT_STRING_LIST(0, "reference", &option_reference, N_("repo"),
78 N_("reference repository")),
79 OPT_BOOL(0, "dissociate", &option_dissociate,
80 N_("use --reference only while cloning")),
81 OPT_STRING('o', "origin", &option_origin, N_("name"),
82 N_("use <name> instead of 'origin' to track upstream")),
83 OPT_STRING('b', "branch", &option_branch, N_("branch"),
84 N_("checkout <branch> instead of the remote's HEAD")),
85 OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"),
86 N_("path to git-upload-pack on the remote")),
87 OPT_STRING(0, "depth", &option_depth, N_("depth"),
88 N_("create a shallow clone of that depth")),
89 OPT_BOOL(0, "single-branch", &option_single_branch,
90 N_("clone only one branch, HEAD or --branch")),
91 OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
92 N_("separate git dir from working tree")),
93 OPT_STRING_LIST('c', "config", &option_config, N_("key=value"),
94 N_("set config inside the new repository")),
98 static const char *argv_submodule[] = {
99 "submodule", "update", "--init", "--recursive", NULL
102 static char *get_repo_path(const char *repo, int *is_bundle)
104 static char *suffix[] = { "/.git", "", ".git/.git", ".git" };
105 static char *bundle_suffix[] = { ".bundle", "" };
109 for (i = 0; i < ARRAY_SIZE(suffix); i++) {
111 path = mkpath("%s%s", repo, suffix[i]);
114 if (S_ISDIR(st.st_mode) && is_git_directory(path)) {
116 return xstrdup(absolute_path(path));
117 } else if (S_ISREG(st.st_mode) && st.st_size > 8) {
118 /* Is it a "gitfile"? */
120 int len, fd = open(path, O_RDONLY);
123 len = read_in_full(fd, signature, 8);
125 if (len != 8 || strncmp(signature, "gitdir: ", 8))
127 path = read_gitfile(path);
130 return xstrdup(absolute_path(path));
135 for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) {
137 path = mkpath("%s%s", repo, bundle_suffix[i]);
138 if (!stat(path, &st) && S_ISREG(st.st_mode)) {
140 return xstrdup(absolute_path(path));
147 static char *guess_dir_name(const char *repo, int is_bundle, int is_bare)
149 const char *end = repo + strlen(repo), *start;
153 * Strip trailing spaces, slashes and /.git
155 while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1])))
157 if (end - repo > 5 && is_dir_sep(end[-5]) &&
158 !strncmp(end - 4, ".git", 4)) {
160 while (repo < end && is_dir_sep(end[-1]))
165 * Find last component, but be prepared that repo could have
166 * the form "remote.example.com:foo.git", i.e. no slash
167 * in the directory part.
170 while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':')
174 * Strip .{bundle,git}.
177 if (end - start > 7 && !strncmp(end - 7, ".bundle", 7))
180 if (end - start > 4 && !strncmp(end - 4, ".git", 4))
185 struct strbuf result = STRBUF_INIT;
186 strbuf_addf(&result, "%.*s.git", (int)(end - start), start);
187 dir = strbuf_detach(&result, NULL);
189 dir = xstrndup(start, end - start);
191 * Replace sequences of 'control' characters and whitespace
192 * with one ascii space, remove leading and trailing spaces.
196 int prev_space = 1 /* strip leading whitespace */;
197 for (end = dir; *end; ++end) {
199 if ((unsigned char)ch < '\x20')
210 if (out > dir && prev_space)
216 static void strip_trailing_slashes(char *dir)
218 char *end = dir + strlen(dir);
220 while (dir < end - 1 && is_dir_sep(end[-1]))
225 static int add_one_reference(struct string_list_item *item, void *cb_data)
229 struct strbuf alternate = STRBUF_INIT;
231 /* Beware: read_gitfile(), real_path() and mkpath() return static buffer */
232 ref_git = xstrdup(real_path(item->string));
234 repo = read_gitfile(ref_git);
236 repo = read_gitfile(mkpath("%s/.git", ref_git));
239 ref_git = xstrdup(repo);
242 if (!repo && is_directory(mkpath("%s/.git/objects", ref_git))) {
243 char *ref_git_git = mkpathdup("%s/.git", ref_git);
245 ref_git = ref_git_git;
246 } else if (!is_directory(mkpath("%s/objects", ref_git)))
247 die(_("reference repository '%s' is not a local repository."),
250 if (!access(mkpath("%s/shallow", ref_git), F_OK))
251 die(_("reference repository '%s' is shallow"), item->string);
253 if (!access(mkpath("%s/info/grafts", ref_git), F_OK))
254 die(_("reference repository '%s' is grafted"), item->string);
256 strbuf_addf(&alternate, "%s/objects", ref_git);
257 add_to_alternates_file(alternate.buf);
258 strbuf_release(&alternate);
263 static void setup_reference(void)
265 for_each_string_list(&option_reference, add_one_reference, NULL);
268 static void copy_alternates(struct strbuf *src, struct strbuf *dst,
269 const char *src_repo)
272 * Read from the source objects/info/alternates file
273 * and copy the entries to corresponding file in the
274 * destination repository with add_to_alternates_file().
275 * Both src and dst have "$path/objects/info/alternates".
277 * Instead of copying bit-for-bit from the original,
278 * we need to append to existing one so that the already
279 * created entry via "clone -s" is not lost, and also
280 * to turn entries with paths relative to the original
281 * absolute, so that they can be used in the new repository.
283 FILE *in = fopen(src->buf, "r");
284 struct strbuf line = STRBUF_INIT;
286 while (strbuf_getline(&line, in, '\n') != EOF) {
288 if (!line.len || line.buf[0] == '#')
290 if (is_absolute_path(line.buf)) {
291 add_to_alternates_file(line.buf);
294 abs_path = mkpathdup("%s/objects/%s", src_repo, line.buf);
295 normalize_path_copy(abs_path, abs_path);
296 add_to_alternates_file(abs_path);
299 strbuf_release(&line);
303 static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
304 const char *src_repo, int src_baselen)
308 int src_len, dest_len;
311 dir = opendir(src->buf);
313 die_errno(_("failed to open '%s'"), src->buf);
315 if (mkdir(dest->buf, 0777)) {
317 die_errno(_("failed to create directory '%s'"), dest->buf);
318 else if (stat(dest->buf, &buf))
319 die_errno(_("failed to stat '%s'"), dest->buf);
320 else if (!S_ISDIR(buf.st_mode))
321 die(_("%s exists and is not a directory"), dest->buf);
324 strbuf_addch(src, '/');
326 strbuf_addch(dest, '/');
327 dest_len = dest->len;
329 while ((de = readdir(dir)) != NULL) {
330 strbuf_setlen(src, src_len);
331 strbuf_addstr(src, de->d_name);
332 strbuf_setlen(dest, dest_len);
333 strbuf_addstr(dest, de->d_name);
334 if (stat(src->buf, &buf)) {
335 warning (_("failed to stat %s\n"), src->buf);
338 if (S_ISDIR(buf.st_mode)) {
339 if (de->d_name[0] != '.')
340 copy_or_link_directory(src, dest,
341 src_repo, src_baselen);
345 /* Files that cannot be copied bit-for-bit... */
346 if (!strcmp(src->buf + src_baselen, "/info/alternates")) {
347 copy_alternates(src, dest, src_repo);
351 if (unlink(dest->buf) && errno != ENOENT)
352 die_errno(_("failed to unlink '%s'"), dest->buf);
353 if (!option_no_hardlinks) {
354 if (!link(src->buf, dest->buf))
356 if (option_local > 0)
357 die_errno(_("failed to create link '%s'"), dest->buf);
358 option_no_hardlinks = 1;
360 if (copy_file_with_time(dest->buf, src->buf, 0666))
361 die_errno(_("failed to copy file to '%s'"), dest->buf);
366 static void clone_local(const char *src_repo, const char *dest_repo)
369 struct strbuf alt = STRBUF_INIT;
370 strbuf_addf(&alt, "%s/objects", src_repo);
371 add_to_alternates_file(alt.buf);
372 strbuf_release(&alt);
374 struct strbuf src = STRBUF_INIT;
375 struct strbuf dest = STRBUF_INIT;
376 strbuf_addf(&src, "%s/objects", src_repo);
377 strbuf_addf(&dest, "%s/objects", dest_repo);
378 copy_or_link_directory(&src, &dest, src_repo, src.len);
379 strbuf_release(&src);
380 strbuf_release(&dest);
383 if (0 <= option_verbosity)
384 fprintf(stderr, _("done.\n"));
387 static const char *junk_work_tree;
388 static const char *junk_git_dir;
393 } junk_mode = JUNK_LEAVE_NONE;
395 static const char junk_leave_repo_msg[] =
396 N_("Clone succeeded, but checkout failed.\n"
397 "You can inspect what was checked out with 'git status'\n"
398 "and retry the checkout with 'git checkout -f HEAD'\n");
400 static void remove_junk(void)
402 struct strbuf sb = STRBUF_INIT;
405 case JUNK_LEAVE_REPO:
406 warning("%s", _(junk_leave_repo_msg));
411 /* proceed to removal */
416 strbuf_addstr(&sb, junk_git_dir);
417 remove_dir_recursively(&sb, 0);
420 if (junk_work_tree) {
421 strbuf_addstr(&sb, junk_work_tree);
422 remove_dir_recursively(&sb, 0);
427 static void remove_junk_on_signal(int signo)
434 static struct ref *find_remote_branch(const struct ref *refs, const char *branch)
437 struct strbuf head = STRBUF_INIT;
438 strbuf_addstr(&head, "refs/heads/");
439 strbuf_addstr(&head, branch);
440 ref = find_ref_by_name(refs, head.buf);
441 strbuf_release(&head);
446 strbuf_addstr(&head, "refs/tags/");
447 strbuf_addstr(&head, branch);
448 ref = find_ref_by_name(refs, head.buf);
449 strbuf_release(&head);
454 static struct ref *wanted_peer_refs(const struct ref *refs,
455 struct refspec *refspec)
457 struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD"));
458 struct ref *local_refs = head;
459 struct ref **tail = head ? &head->next : &local_refs;
461 if (option_single_branch) {
462 struct ref *remote_head = NULL;
465 remote_head = guess_remote_head(head, refs, 0);
469 remote_head = copy_ref(find_remote_branch(refs, option_branch));
472 if (!remote_head && option_branch)
473 warning(_("Could not find remote branch %s to clone."),
476 get_fetch_map(remote_head, refspec, &tail, 0);
478 /* if --branch=tag, pull the requested tag explicitly */
479 get_fetch_map(remote_head, tag_refspec, &tail, 0);
482 get_fetch_map(refs, refspec, &tail, 0);
484 if (!option_mirror && !option_single_branch)
485 get_fetch_map(refs, tag_refspec, &tail, 0);
490 static void write_remote_refs(const struct ref *local_refs)
494 lock_packed_refs(LOCK_DIE_ON_ERROR);
496 for (r = local_refs; r; r = r->next) {
499 add_packed_ref(r->peer_ref->name, r->old_sha1);
502 if (commit_packed_refs())
503 die_errno("unable to overwrite old ref-pack file");
506 static void write_followtags(const struct ref *refs, const char *msg)
508 const struct ref *ref;
509 for (ref = refs; ref; ref = ref->next) {
510 if (!starts_with(ref->name, "refs/tags/"))
512 if (ends_with(ref->name, "^{}"))
514 if (!has_sha1_file(ref->old_sha1))
516 update_ref(msg, ref->name, ref->old_sha1,
517 NULL, 0, UPDATE_REFS_DIE_ON_ERR);
521 static int iterate_ref_map(void *cb_data, unsigned char sha1[20])
523 struct ref **rm = cb_data;
524 struct ref *ref = *rm;
527 * Skip anything missing a peer_ref, which we are not
528 * actually going to write a ref for.
530 while (ref && !ref->peer_ref)
532 /* Returning -1 notes "end of list" to the caller. */
536 hashcpy(sha1, ref->old_sha1);
541 static void update_remote_refs(const struct ref *refs,
542 const struct ref *mapped_refs,
543 const struct ref *remote_head_points_at,
544 const char *branch_top,
546 struct transport *transport,
547 int check_connectivity)
549 const struct ref *rm = mapped_refs;
551 if (check_connectivity) {
552 if (transport->progress)
553 fprintf(stderr, _("Checking connectivity... "));
554 if (check_everything_connected_with_transport(iterate_ref_map,
556 die(_("remote did not send all necessary objects"));
557 if (transport->progress)
558 fprintf(stderr, _("done.\n"));
562 write_remote_refs(mapped_refs);
563 if (option_single_branch)
564 write_followtags(refs, msg);
567 if (remote_head_points_at && !option_bare) {
568 struct strbuf head_ref = STRBUF_INIT;
569 strbuf_addstr(&head_ref, branch_top);
570 strbuf_addstr(&head_ref, "HEAD");
571 create_symref(head_ref.buf,
572 remote_head_points_at->peer_ref->name,
577 static void update_head(const struct ref *our, const struct ref *remote,
581 if (our && skip_prefix(our->name, "refs/heads/", &head)) {
582 /* Local default branch link */
583 create_symref("HEAD", our->name, NULL);
585 update_ref(msg, "HEAD", our->old_sha1, NULL, 0,
586 UPDATE_REFS_DIE_ON_ERR);
587 install_branch_config(0, head, option_origin, our->name);
590 struct commit *c = lookup_commit_reference(our->old_sha1);
591 /* --branch specifies a non-branch (i.e. tags), detach HEAD */
592 update_ref(msg, "HEAD", c->object.sha1,
593 NULL, REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
596 * We know remote HEAD points to a non-branch, or
597 * HEAD points to a branch but we don't know which one.
598 * Detach HEAD in all these cases.
600 update_ref(msg, "HEAD", remote->old_sha1,
601 NULL, REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
605 static int checkout(void)
607 unsigned char sha1[20];
609 struct lock_file *lock_file;
610 struct unpack_trees_options opts;
615 if (option_no_checkout)
618 head = resolve_refdup("HEAD", RESOLVE_REF_READING, sha1, NULL);
620 warning(_("remote HEAD refers to nonexistent ref, "
621 "unable to checkout.\n"));
624 if (!strcmp(head, "HEAD")) {
625 if (advice_detached_head)
626 detach_advice(sha1_to_hex(sha1));
628 if (!starts_with(head, "refs/heads/"))
629 die(_("HEAD not found below refs/heads!"));
633 /* We need to be in the new work tree for the checkout */
636 lock_file = xcalloc(1, sizeof(struct lock_file));
637 hold_locked_index(lock_file, 1);
639 memset(&opts, 0, sizeof opts);
642 opts.fn = oneway_merge;
643 opts.verbose_update = (option_verbosity >= 0);
644 opts.src_index = &the_index;
645 opts.dst_index = &the_index;
647 tree = parse_tree_indirect(sha1);
649 init_tree_desc(&t, tree->buffer, tree->size);
650 if (unpack_trees(1, &t, &opts) < 0)
651 die(_("unable to checkout working tree"));
653 if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
654 die(_("unable to write new index file"));
656 err |= run_hook_le(NULL, "post-checkout", sha1_to_hex(null_sha1),
657 sha1_to_hex(sha1), "1", NULL);
659 if (!err && option_recursive)
660 err = run_command_v_opt(argv_submodule, RUN_GIT_CMD);
665 static int write_one_config(const char *key, const char *value, void *data)
667 return git_config_set_multivar(key, value ? value : "true", "^$", 0);
670 static void write_config(struct string_list *config)
674 for (i = 0; i < config->nr; i++) {
675 if (git_config_parse_parameter(config->items[i].string,
676 write_one_config, NULL) < 0)
677 die("unable to write parameters to config file");
681 static void write_refspec_config(const char *src_ref_prefix,
682 const struct ref *our_head_points_at,
683 const struct ref *remote_head_points_at,
684 struct strbuf *branch_top)
686 struct strbuf key = STRBUF_INIT;
687 struct strbuf value = STRBUF_INIT;
689 if (option_mirror || !option_bare) {
690 if (option_single_branch && !option_mirror) {
692 if (starts_with(our_head_points_at->name, "refs/tags/"))
693 strbuf_addf(&value, "+%s:%s", our_head_points_at->name,
694 our_head_points_at->name);
696 strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name,
697 branch_top->buf, option_branch);
698 } else if (remote_head_points_at) {
699 const char *head = remote_head_points_at->name;
700 if (!skip_prefix(head, "refs/heads/", &head))
701 die("BUG: remote HEAD points at non-head?");
703 strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
704 branch_top->buf, head);
707 * otherwise, the next "git fetch" will
708 * simply fetch from HEAD without updating
709 * any remote-tracking branch, which is what
713 strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf);
715 /* Configure the remote */
717 strbuf_addf(&key, "remote.%s.fetch", option_origin);
718 git_config_set_multivar(key.buf, value.buf, "^$", 0);
722 strbuf_addf(&key, "remote.%s.mirror", option_origin);
723 git_config_set(key.buf, "true");
729 strbuf_release(&key);
730 strbuf_release(&value);
733 static void dissociate_from_references(void)
735 static const char* argv[] = { "repack", "-a", "-d", NULL };
737 if (run_command_v_opt(argv, RUN_GIT_CMD|RUN_COMMAND_NO_STDIN))
738 die(_("cannot repack to clean up"));
739 if (unlink(git_path("objects/info/alternates")) && errno != ENOENT)
740 die_errno(_("cannot unlink temporary alternates file"));
743 int cmd_clone(int argc, const char **argv, const char *prefix)
745 int is_bundle = 0, is_local;
747 const char *repo_name, *repo, *work_tree, *git_dir;
750 const struct ref *refs, *remote_head;
751 const struct ref *remote_head_points_at;
752 const struct ref *our_head_points_at;
753 struct ref *mapped_refs;
754 const struct ref *ref;
755 struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
756 struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
757 struct transport *transport = NULL;
758 const char *src_ref_prefix = "refs/heads/";
759 struct remote *remote;
760 int err = 0, complete_refs_before_fetch = 1;
762 struct refspec *refspec;
763 const char *fetch_pattern;
765 packet_trace_identity("clone");
766 argc = parse_options(argc, argv, prefix, builtin_clone_options,
767 builtin_clone_usage, 0);
770 usage_msg_opt(_("Too many arguments."),
771 builtin_clone_usage, builtin_clone_options);
774 usage_msg_opt(_("You must specify a repository to clone."),
775 builtin_clone_usage, builtin_clone_options);
777 if (option_single_branch == -1)
778 option_single_branch = option_depth ? 1 : 0;
785 die(_("--bare and --origin %s options are incompatible."),
788 die(_("--bare and --separate-git-dir are incompatible."));
789 option_no_checkout = 1;
793 option_origin = "origin";
797 path = get_repo_path(repo_name, &is_bundle);
799 repo = xstrdup(absolute_path(repo_name));
800 else if (!strchr(repo_name, ':'))
801 die(_("repository '%s' does not exist"), repo_name);
805 /* no need to be strict, transport_set_option() will validate it again */
806 if (option_depth && atoi(option_depth) < 1)
807 die(_("depth %s is not a positive number"), option_depth);
810 dir = xstrdup(argv[1]);
812 dir = guess_dir_name(repo_name, is_bundle, option_bare);
813 strip_trailing_slashes(dir);
815 dest_exists = !stat(dir, &buf);
816 if (dest_exists && !is_empty_dir(dir))
817 die(_("destination path '%s' already exists and is not "
818 "an empty directory."), dir);
820 strbuf_addf(&reflog_msg, "clone: from %s", repo);
825 work_tree = getenv("GIT_WORK_TREE");
826 if (work_tree && !stat(work_tree, &buf))
827 die(_("working tree '%s' already exists."), work_tree);
830 if (option_bare || work_tree)
831 git_dir = xstrdup(dir);
834 git_dir = mkpathdup("%s/.git", dir);
838 sigchain_push_common(remove_junk_on_signal);
841 if (safe_create_leading_directories_const(work_tree) < 0)
842 die_errno(_("could not create leading directories of '%s'"),
844 if (!dest_exists && mkdir(work_tree, 0777))
845 die_errno(_("could not create work tree dir '%s'"),
847 junk_work_tree = work_tree;
848 set_git_work_tree(work_tree);
851 junk_git_dir = git_dir;
852 if (safe_create_leading_directories_const(git_dir) < 0)
853 die(_("could not create leading directories of '%s'"), git_dir);
855 set_git_dir_init(git_dir, real_git_dir, 0);
857 git_dir = real_git_dir;
858 junk_git_dir = real_git_dir;
861 if (0 <= option_verbosity) {
863 fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir);
865 fprintf(stderr, _("Cloning into '%s'...\n"), dir);
867 init_db(option_template, INIT_DB_QUIET);
868 write_config(&option_config);
870 git_config(git_default_config, NULL);
874 src_ref_prefix = "refs/";
875 strbuf_addstr(&branch_top, src_ref_prefix);
877 git_config_set("core.bare", "true");
879 strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin);
882 strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
883 strbuf_addf(&key, "remote.%s.url", option_origin);
884 git_config_set(key.buf, repo);
887 if (option_reference.nr)
889 else if (option_dissociate) {
890 warning(_("--dissociate given, but there is no --reference"));
891 option_dissociate = 0;
894 fetch_pattern = value.buf;
895 refspec = parse_fetch_refspec(1, &fetch_pattern);
897 strbuf_reset(&value);
899 remote = remote_get(option_origin);
900 transport = transport_get(remote, remote->url[0]);
901 transport_set_verbosity(transport, option_verbosity, option_progress);
903 path = get_repo_path(remote->url[0], &is_bundle);
904 is_local = option_local != 0 && path && !is_bundle;
907 warning(_("--depth is ignored in local clones; use file:// instead."));
908 if (!access(mkpath("%s/shallow", path), F_OK)) {
909 if (option_local > 0)
910 warning(_("source repository is shallow, ignoring --local"));
914 if (option_local > 0 && !is_local)
915 warning(_("--local is ignored"));
916 transport->cloning = 1;
918 if (!transport->get_refs_list || (!is_local && !transport->fetch))
919 die(_("Don't know how to clone %s"), transport->url);
921 transport_set_option(transport, TRANS_OPT_KEEP, "yes");
924 transport_set_option(transport, TRANS_OPT_DEPTH,
926 if (option_single_branch)
927 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
929 if (option_upload_pack)
930 transport_set_option(transport, TRANS_OPT_UPLOADPACK,
933 if (transport->smart_options && !option_depth)
934 transport->smart_options->check_self_contained_and_connected = 1;
936 refs = transport_get_remote_refs(transport);
939 mapped_refs = wanted_peer_refs(refs, refspec);
941 * transport_get_remote_refs() may return refs with null sha-1
942 * in mapped_refs (see struct transport->get_refs_list
943 * comment). In that case we need fetch it early because
944 * remote_head code below relies on it.
946 * for normal clones, transport_get_remote_refs() should
947 * return reliable ref set, we can delay cloning until after
950 for (ref = refs; ref; ref = ref->next)
951 if (is_null_sha1(ref->old_sha1)) {
952 complete_refs_before_fetch = 0;
956 if (!is_local && !complete_refs_before_fetch)
957 transport_fetch_refs(transport, mapped_refs);
959 remote_head = find_ref_by_name(refs, "HEAD");
960 remote_head_points_at =
961 guess_remote_head(remote_head, mapped_refs, 0);
965 find_remote_branch(mapped_refs, option_branch);
967 if (!our_head_points_at)
968 die(_("Remote branch %s not found in upstream %s"),
969 option_branch, option_origin);
972 our_head_points_at = remote_head_points_at;
976 die(_("Remote branch %s not found in upstream %s"),
977 option_branch, option_origin);
979 warning(_("You appear to have cloned an empty repository."));
981 our_head_points_at = NULL;
982 remote_head_points_at = NULL;
984 option_no_checkout = 1;
986 install_branch_config(0, "master", option_origin,
987 "refs/heads/master");
990 write_refspec_config(src_ref_prefix, our_head_points_at,
991 remote_head_points_at, &branch_top);
994 clone_local(path, git_dir);
995 else if (refs && complete_refs_before_fetch)
996 transport_fetch_refs(transport, mapped_refs);
998 update_remote_refs(refs, mapped_refs, remote_head_points_at,
999 branch_top.buf, reflog_msg.buf, transport, !is_local);
1001 update_head(our_head_points_at, remote_head, reflog_msg.buf);
1003 transport_unlock_pack(transport);
1004 transport_disconnect(transport);
1006 if (option_dissociate)
1007 dissociate_from_references();
1009 junk_mode = JUNK_LEAVE_REPO;
1012 strbuf_release(&reflog_msg);
1013 strbuf_release(&branch_top);
1014 strbuf_release(&key);
1015 strbuf_release(&value);
1016 junk_mode = JUNK_LEAVE_ALL;