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 const char *get_repo_path_1(struct strbuf
*path
, int *is_bundle
)
104 static char *suffix
[] = { "/.git", "", ".git/.git", ".git" };
105 static char *bundle_suffix
[] = { ".bundle", "" };
106 size_t baselen
= path
->len
;
110 for (i
= 0; i
< ARRAY_SIZE(suffix
); i
++) {
111 strbuf_setlen(path
, baselen
);
112 strbuf_addstr(path
, suffix
[i
]);
113 if (stat(path
->buf
, &st
))
115 if (S_ISDIR(st
.st_mode
) && is_git_directory(path
->buf
)) {
118 } else if (S_ISREG(st
.st_mode
) && st
.st_size
> 8) {
119 /* Is it a "gitfile"? */
122 int len
, fd
= open(path
->buf
, O_RDONLY
);
125 len
= read_in_full(fd
, signature
, 8);
127 if (len
!= 8 || strncmp(signature
, "gitdir: ", 8))
129 dst
= read_gitfile(path
->buf
);
137 for (i
= 0; i
< ARRAY_SIZE(bundle_suffix
); i
++) {
138 strbuf_setlen(path
, baselen
);
139 strbuf_addstr(path
, bundle_suffix
[i
]);
140 if (!stat(path
->buf
, &st
) && S_ISREG(st
.st_mode
)) {
149 static char *get_repo_path(const char *repo
, int *is_bundle
)
151 struct strbuf path
= STRBUF_INIT
;
155 strbuf_addstr(&path
, repo
);
156 raw
= get_repo_path_1(&path
, is_bundle
);
157 canon
= raw
? xstrdup(absolute_path(raw
)) : NULL
;
158 strbuf_release(&path
);
162 static char *guess_dir_name(const char *repo
, int is_bundle
, int is_bare
)
164 const char *end
= repo
+ strlen(repo
), *start
, *ptr
;
171 start
= strstr(repo
, "://");
178 * Skip authentication data. The stripping does happen
179 * greedily, such that we strip up to the last '@' inside
182 for (ptr
= start
; ptr
< end
&& !is_dir_sep(*ptr
); ptr
++) {
188 * Strip trailing spaces, slashes and /.git
190 while (start
< end
&& (is_dir_sep(end
[-1]) || isspace(end
[-1])))
192 if (end
- start
> 5 && is_dir_sep(end
[-5]) &&
193 !strncmp(end
- 4, ".git", 4)) {
195 while (start
< end
&& is_dir_sep(end
[-1]))
200 * Strip trailing port number if we've got only a
201 * hostname (that is, there is no dir separator but a
202 * colon). This check is required such that we do not
203 * strip URI's like '/foo/bar:2222.git', which should
204 * result in a dir '2222' being guessed due to backwards
207 if (memchr(start
, '/', end
- start
) == NULL
208 && memchr(start
, ':', end
- start
) != NULL
) {
210 while (start
< ptr
&& isdigit(ptr
[-1]) && ptr
[-1] != ':')
212 if (start
< ptr
&& ptr
[-1] == ':')
217 * Find last component. To remain backwards compatible we
218 * also regard colons as path separators, such that
219 * cloning a repository 'foo:bar.git' would result in a
220 * directory 'bar' being guessed.
223 while (start
< ptr
&& !is_dir_sep(ptr
[-1]) && ptr
[-1] != ':')
228 * Strip .{bundle,git}.
231 strip_suffix_mem(start
, &len
, is_bundle
? ".bundle" : ".git");
233 if (!len
|| (len
== 1 && *start
== '/'))
234 die("No directory name could be guessed.\n"
235 "Please specify a directory on the command line");
238 dir
= xstrfmt("%.*s.git", (int)len
, start
);
240 dir
= xstrndup(start
, len
);
242 * Replace sequences of 'control' characters and whitespace
243 * with one ascii space, remove leading and trailing spaces.
247 int prev_space
= 1 /* strip leading whitespace */;
248 for (end
= dir
; *end
; ++end
) {
250 if ((unsigned char)ch
< '\x20')
261 if (out
> dir
&& prev_space
)
267 static void strip_trailing_slashes(char *dir
)
269 char *end
= dir
+ strlen(dir
);
271 while (dir
< end
- 1 && is_dir_sep(end
[-1]))
276 static int add_one_reference(struct string_list_item
*item
, void *cb_data
)
280 struct strbuf alternate
= STRBUF_INIT
;
282 /* Beware: read_gitfile(), real_path() and mkpath() return static buffer */
283 ref_git
= xstrdup(real_path(item
->string
));
285 repo
= read_gitfile(ref_git
);
287 repo
= read_gitfile(mkpath("%s/.git", ref_git
));
290 ref_git
= xstrdup(repo
);
293 if (!repo
&& is_directory(mkpath("%s/.git/objects", ref_git
))) {
294 char *ref_git_git
= mkpathdup("%s/.git", ref_git
);
296 ref_git
= ref_git_git
;
297 } else if (!is_directory(mkpath("%s/objects", ref_git
))) {
298 struct strbuf sb
= STRBUF_INIT
;
299 if (get_common_dir(&sb
, ref_git
))
300 die(_("reference repository '%s' as a linked checkout is not supported yet."),
302 die(_("reference repository '%s' is not a local repository."),
306 if (!access(mkpath("%s/shallow", ref_git
), F_OK
))
307 die(_("reference repository '%s' is shallow"), item
->string
);
309 if (!access(mkpath("%s/info/grafts", ref_git
), F_OK
))
310 die(_("reference repository '%s' is grafted"), item
->string
);
312 strbuf_addf(&alternate
, "%s/objects", ref_git
);
313 add_to_alternates_file(alternate
.buf
);
314 strbuf_release(&alternate
);
319 static void setup_reference(void)
321 for_each_string_list(&option_reference
, add_one_reference
, NULL
);
324 static void copy_alternates(struct strbuf
*src
, struct strbuf
*dst
,
325 const char *src_repo
)
328 * Read from the source objects/info/alternates file
329 * and copy the entries to corresponding file in the
330 * destination repository with add_to_alternates_file().
331 * Both src and dst have "$path/objects/info/alternates".
333 * Instead of copying bit-for-bit from the original,
334 * we need to append to existing one so that the already
335 * created entry via "clone -s" is not lost, and also
336 * to turn entries with paths relative to the original
337 * absolute, so that they can be used in the new repository.
339 FILE *in
= fopen(src
->buf
, "r");
340 struct strbuf line
= STRBUF_INIT
;
342 while (strbuf_getline(&line
, in
, '\n') != EOF
) {
344 if (!line
.len
|| line
.buf
[0] == '#')
346 if (is_absolute_path(line
.buf
)) {
347 add_to_alternates_file(line
.buf
);
350 abs_path
= mkpathdup("%s/objects/%s", src_repo
, line
.buf
);
351 normalize_path_copy(abs_path
, abs_path
);
352 add_to_alternates_file(abs_path
);
355 strbuf_release(&line
);
359 static void copy_or_link_directory(struct strbuf
*src
, struct strbuf
*dest
,
360 const char *src_repo
, int src_baselen
)
364 int src_len
, dest_len
;
367 dir
= opendir(src
->buf
);
369 die_errno(_("failed to open '%s'"), src
->buf
);
371 if (mkdir(dest
->buf
, 0777)) {
373 die_errno(_("failed to create directory '%s'"), dest
->buf
);
374 else if (stat(dest
->buf
, &buf
))
375 die_errno(_("failed to stat '%s'"), dest
->buf
);
376 else if (!S_ISDIR(buf
.st_mode
))
377 die(_("%s exists and is not a directory"), dest
->buf
);
380 strbuf_addch(src
, '/');
382 strbuf_addch(dest
, '/');
383 dest_len
= dest
->len
;
385 while ((de
= readdir(dir
)) != NULL
) {
386 strbuf_setlen(src
, src_len
);
387 strbuf_addstr(src
, de
->d_name
);
388 strbuf_setlen(dest
, dest_len
);
389 strbuf_addstr(dest
, de
->d_name
);
390 if (stat(src
->buf
, &buf
)) {
391 warning (_("failed to stat %s\n"), src
->buf
);
394 if (S_ISDIR(buf
.st_mode
)) {
395 if (de
->d_name
[0] != '.')
396 copy_or_link_directory(src
, dest
,
397 src_repo
, src_baselen
);
401 /* Files that cannot be copied bit-for-bit... */
402 if (!strcmp(src
->buf
+ src_baselen
, "/info/alternates")) {
403 copy_alternates(src
, dest
, src_repo
);
407 if (unlink(dest
->buf
) && errno
!= ENOENT
)
408 die_errno(_("failed to unlink '%s'"), dest
->buf
);
409 if (!option_no_hardlinks
) {
410 if (!link(src
->buf
, dest
->buf
))
412 if (option_local
> 0)
413 die_errno(_("failed to create link '%s'"), dest
->buf
);
414 option_no_hardlinks
= 1;
416 if (copy_file_with_time(dest
->buf
, src
->buf
, 0666))
417 die_errno(_("failed to copy file to '%s'"), dest
->buf
);
422 static void clone_local(const char *src_repo
, const char *dest_repo
)
425 struct strbuf alt
= STRBUF_INIT
;
426 get_common_dir(&alt
, src_repo
);
427 strbuf_addstr(&alt
, "/objects");
428 add_to_alternates_file(alt
.buf
);
429 strbuf_release(&alt
);
431 struct strbuf src
= STRBUF_INIT
;
432 struct strbuf dest
= STRBUF_INIT
;
433 get_common_dir(&src
, src_repo
);
434 get_common_dir(&dest
, dest_repo
);
435 strbuf_addstr(&src
, "/objects");
436 strbuf_addstr(&dest
, "/objects");
437 copy_or_link_directory(&src
, &dest
, src_repo
, src
.len
);
438 strbuf_release(&src
);
439 strbuf_release(&dest
);
442 if (0 <= option_verbosity
)
443 fprintf(stderr
, _("done.\n"));
446 static const char *junk_work_tree
;
447 static const char *junk_git_dir
;
452 } junk_mode
= JUNK_LEAVE_NONE
;
454 static const char junk_leave_repo_msg
[] =
455 N_("Clone succeeded, but checkout failed.\n"
456 "You can inspect what was checked out with 'git status'\n"
457 "and retry the checkout with 'git checkout -f HEAD'\n");
459 static void remove_junk(void)
461 struct strbuf sb
= STRBUF_INIT
;
464 case JUNK_LEAVE_REPO
:
465 warning("%s", _(junk_leave_repo_msg
));
470 /* proceed to removal */
475 strbuf_addstr(&sb
, junk_git_dir
);
476 remove_dir_recursively(&sb
, 0);
479 if (junk_work_tree
) {
480 strbuf_addstr(&sb
, junk_work_tree
);
481 remove_dir_recursively(&sb
, 0);
486 static void remove_junk_on_signal(int signo
)
493 static struct ref
*find_remote_branch(const struct ref
*refs
, const char *branch
)
496 struct strbuf head
= STRBUF_INIT
;
497 strbuf_addstr(&head
, "refs/heads/");
498 strbuf_addstr(&head
, branch
);
499 ref
= find_ref_by_name(refs
, head
.buf
);
500 strbuf_release(&head
);
505 strbuf_addstr(&head
, "refs/tags/");
506 strbuf_addstr(&head
, branch
);
507 ref
= find_ref_by_name(refs
, head
.buf
);
508 strbuf_release(&head
);
513 static struct ref
*wanted_peer_refs(const struct ref
*refs
,
514 struct refspec
*refspec
)
516 struct ref
*head
= copy_ref(find_ref_by_name(refs
, "HEAD"));
517 struct ref
*local_refs
= head
;
518 struct ref
**tail
= head
? &head
->next
: &local_refs
;
520 if (option_single_branch
) {
521 struct ref
*remote_head
= NULL
;
524 remote_head
= guess_remote_head(head
, refs
, 0);
528 remote_head
= copy_ref(find_remote_branch(refs
, option_branch
));
531 if (!remote_head
&& option_branch
)
532 warning(_("Could not find remote branch %s to clone."),
535 get_fetch_map(remote_head
, refspec
, &tail
, 0);
537 /* if --branch=tag, pull the requested tag explicitly */
538 get_fetch_map(remote_head
, tag_refspec
, &tail
, 0);
541 get_fetch_map(refs
, refspec
, &tail
, 0);
543 if (!option_mirror
&& !option_single_branch
)
544 get_fetch_map(refs
, tag_refspec
, &tail
, 0);
549 static void write_remote_refs(const struct ref
*local_refs
)
553 struct ref_transaction
*t
;
554 struct strbuf err
= STRBUF_INIT
;
556 t
= ref_transaction_begin(&err
);
560 for (r
= local_refs
; r
; r
= r
->next
) {
563 if (ref_transaction_create(t
, r
->peer_ref
->name
, r
->old_sha1
,
568 if (initial_ref_transaction_commit(t
, &err
))
571 strbuf_release(&err
);
572 ref_transaction_free(t
);
575 static void write_followtags(const struct ref
*refs
, const char *msg
)
577 const struct ref
*ref
;
578 for (ref
= refs
; ref
; ref
= ref
->next
) {
579 if (!starts_with(ref
->name
, "refs/tags/"))
581 if (ends_with(ref
->name
, "^{}"))
583 if (!has_sha1_file(ref
->old_sha1
))
585 update_ref(msg
, ref
->name
, ref
->old_sha1
,
586 NULL
, 0, UPDATE_REFS_DIE_ON_ERR
);
590 static int iterate_ref_map(void *cb_data
, unsigned char sha1
[20])
592 struct ref
**rm
= cb_data
;
593 struct ref
*ref
= *rm
;
596 * Skip anything missing a peer_ref, which we are not
597 * actually going to write a ref for.
599 while (ref
&& !ref
->peer_ref
)
601 /* Returning -1 notes "end of list" to the caller. */
605 hashcpy(sha1
, ref
->old_sha1
);
610 static void update_remote_refs(const struct ref
*refs
,
611 const struct ref
*mapped_refs
,
612 const struct ref
*remote_head_points_at
,
613 const char *branch_top
,
615 struct transport
*transport
,
616 int check_connectivity
)
618 const struct ref
*rm
= mapped_refs
;
620 if (check_connectivity
) {
621 if (transport
->progress
)
622 fprintf(stderr
, _("Checking connectivity... "));
623 if (check_everything_connected_with_transport(iterate_ref_map
,
625 die(_("remote did not send all necessary objects"));
626 if (transport
->progress
)
627 fprintf(stderr
, _("done.\n"));
631 write_remote_refs(mapped_refs
);
632 if (option_single_branch
)
633 write_followtags(refs
, msg
);
636 if (remote_head_points_at
&& !option_bare
) {
637 struct strbuf head_ref
= STRBUF_INIT
;
638 strbuf_addstr(&head_ref
, branch_top
);
639 strbuf_addstr(&head_ref
, "HEAD");
640 create_symref(head_ref
.buf
,
641 remote_head_points_at
->peer_ref
->name
,
646 static void update_head(const struct ref
*our
, const struct ref
*remote
,
650 if (our
&& skip_prefix(our
->name
, "refs/heads/", &head
)) {
651 /* Local default branch link */
652 create_symref("HEAD", our
->name
, NULL
);
654 update_ref(msg
, "HEAD", our
->old_sha1
, NULL
, 0,
655 UPDATE_REFS_DIE_ON_ERR
);
656 install_branch_config(0, head
, option_origin
, our
->name
);
659 struct commit
*c
= lookup_commit_reference(our
->old_sha1
);
660 /* --branch specifies a non-branch (i.e. tags), detach HEAD */
661 update_ref(msg
, "HEAD", c
->object
.sha1
,
662 NULL
, REF_NODEREF
, UPDATE_REFS_DIE_ON_ERR
);
665 * We know remote HEAD points to a non-branch, or
666 * HEAD points to a branch but we don't know which one.
667 * Detach HEAD in all these cases.
669 update_ref(msg
, "HEAD", remote
->old_sha1
,
670 NULL
, REF_NODEREF
, UPDATE_REFS_DIE_ON_ERR
);
674 static int checkout(void)
676 unsigned char sha1
[20];
678 struct lock_file
*lock_file
;
679 struct unpack_trees_options opts
;
684 if (option_no_checkout
)
687 head
= resolve_refdup("HEAD", RESOLVE_REF_READING
, sha1
, NULL
);
689 warning(_("remote HEAD refers to nonexistent ref, "
690 "unable to checkout.\n"));
693 if (!strcmp(head
, "HEAD")) {
694 if (advice_detached_head
)
695 detach_advice(sha1_to_hex(sha1
));
697 if (!starts_with(head
, "refs/heads/"))
698 die(_("HEAD not found below refs/heads!"));
702 /* We need to be in the new work tree for the checkout */
705 lock_file
= xcalloc(1, sizeof(struct lock_file
));
706 hold_locked_index(lock_file
, 1);
708 memset(&opts
, 0, sizeof opts
);
711 opts
.fn
= oneway_merge
;
712 opts
.verbose_update
= (option_verbosity
>= 0);
713 opts
.src_index
= &the_index
;
714 opts
.dst_index
= &the_index
;
716 tree
= parse_tree_indirect(sha1
);
718 init_tree_desc(&t
, tree
->buffer
, tree
->size
);
719 if (unpack_trees(1, &t
, &opts
) < 0)
720 die(_("unable to checkout working tree"));
722 if (write_locked_index(&the_index
, lock_file
, COMMIT_LOCK
))
723 die(_("unable to write new index file"));
725 err
|= run_hook_le(NULL
, "post-checkout", sha1_to_hex(null_sha1
),
726 sha1_to_hex(sha1
), "1", NULL
);
728 if (!err
&& option_recursive
)
729 err
= run_command_v_opt(argv_submodule
, RUN_GIT_CMD
);
734 static int write_one_config(const char *key
, const char *value
, void *data
)
736 return git_config_set_multivar(key
, value
? value
: "true", "^$", 0);
739 static void write_config(struct string_list
*config
)
743 for (i
= 0; i
< config
->nr
; i
++) {
744 if (git_config_parse_parameter(config
->items
[i
].string
,
745 write_one_config
, NULL
) < 0)
746 die("unable to write parameters to config file");
750 static void write_refspec_config(const char *src_ref_prefix
,
751 const struct ref
*our_head_points_at
,
752 const struct ref
*remote_head_points_at
,
753 struct strbuf
*branch_top
)
755 struct strbuf key
= STRBUF_INIT
;
756 struct strbuf value
= STRBUF_INIT
;
758 if (option_mirror
|| !option_bare
) {
759 if (option_single_branch
&& !option_mirror
) {
761 if (starts_with(our_head_points_at
->name
, "refs/tags/"))
762 strbuf_addf(&value
, "+%s:%s", our_head_points_at
->name
,
763 our_head_points_at
->name
);
765 strbuf_addf(&value
, "+%s:%s%s", our_head_points_at
->name
,
766 branch_top
->buf
, option_branch
);
767 } else if (remote_head_points_at
) {
768 const char *head
= remote_head_points_at
->name
;
769 if (!skip_prefix(head
, "refs/heads/", &head
))
770 die("BUG: remote HEAD points at non-head?");
772 strbuf_addf(&value
, "+%s:%s%s", remote_head_points_at
->name
,
773 branch_top
->buf
, head
);
776 * otherwise, the next "git fetch" will
777 * simply fetch from HEAD without updating
778 * any remote-tracking branch, which is what
782 strbuf_addf(&value
, "+%s*:%s*", src_ref_prefix
, branch_top
->buf
);
784 /* Configure the remote */
786 strbuf_addf(&key
, "remote.%s.fetch", option_origin
);
787 git_config_set_multivar(key
.buf
, value
.buf
, "^$", 0);
791 strbuf_addf(&key
, "remote.%s.mirror", option_origin
);
792 git_config_set(key
.buf
, "true");
798 strbuf_release(&key
);
799 strbuf_release(&value
);
802 static void dissociate_from_references(void)
804 static const char* argv
[] = { "repack", "-a", "-d", NULL
};
806 if (run_command_v_opt(argv
, RUN_GIT_CMD
|RUN_COMMAND_NO_STDIN
))
807 die(_("cannot repack to clean up"));
808 if (unlink(git_path("objects/info/alternates")) && errno
!= ENOENT
)
809 die_errno(_("cannot unlink temporary alternates file"));
812 int cmd_clone(int argc
, const char **argv
, const char *prefix
)
814 int is_bundle
= 0, is_local
;
816 const char *repo_name
, *repo
, *work_tree
, *git_dir
;
819 const struct ref
*refs
, *remote_head
;
820 const struct ref
*remote_head_points_at
;
821 const struct ref
*our_head_points_at
;
822 struct ref
*mapped_refs
;
823 const struct ref
*ref
;
824 struct strbuf key
= STRBUF_INIT
, value
= STRBUF_INIT
;
825 struct strbuf branch_top
= STRBUF_INIT
, reflog_msg
= STRBUF_INIT
;
826 struct transport
*transport
= NULL
;
827 const char *src_ref_prefix
= "refs/heads/";
828 struct remote
*remote
;
829 int err
= 0, complete_refs_before_fetch
= 1;
831 struct refspec
*refspec
;
832 const char *fetch_pattern
;
834 packet_trace_identity("clone");
835 argc
= parse_options(argc
, argv
, prefix
, builtin_clone_options
,
836 builtin_clone_usage
, 0);
839 usage_msg_opt(_("Too many arguments."),
840 builtin_clone_usage
, builtin_clone_options
);
843 usage_msg_opt(_("You must specify a repository to clone."),
844 builtin_clone_usage
, builtin_clone_options
);
846 if (option_single_branch
== -1)
847 option_single_branch
= option_depth
? 1 : 0;
854 die(_("--bare and --origin %s options are incompatible."),
857 die(_("--bare and --separate-git-dir are incompatible."));
858 option_no_checkout
= 1;
862 option_origin
= "origin";
866 path
= get_repo_path(repo_name
, &is_bundle
);
868 repo
= xstrdup(absolute_path(repo_name
));
869 else if (!strchr(repo_name
, ':'))
870 die(_("repository '%s' does not exist"), repo_name
);
874 /* no need to be strict, transport_set_option() will validate it again */
875 if (option_depth
&& atoi(option_depth
) < 1)
876 die(_("depth %s is not a positive number"), option_depth
);
879 dir
= xstrdup(argv
[1]);
881 dir
= guess_dir_name(repo_name
, is_bundle
, option_bare
);
882 strip_trailing_slashes(dir
);
884 dest_exists
= !stat(dir
, &buf
);
885 if (dest_exists
&& !is_empty_dir(dir
))
886 die(_("destination path '%s' already exists and is not "
887 "an empty directory."), dir
);
889 strbuf_addf(&reflog_msg
, "clone: from %s", repo
);
894 work_tree
= getenv("GIT_WORK_TREE");
895 if (work_tree
&& !stat(work_tree
, &buf
))
896 die(_("working tree '%s' already exists."), work_tree
);
899 if (option_bare
|| work_tree
)
900 git_dir
= xstrdup(dir
);
903 git_dir
= mkpathdup("%s/.git", dir
);
907 sigchain_push_common(remove_junk_on_signal
);
910 if (safe_create_leading_directories_const(work_tree
) < 0)
911 die_errno(_("could not create leading directories of '%s'"),
913 if (!dest_exists
&& mkdir(work_tree
, 0777))
914 die_errno(_("could not create work tree dir '%s'"),
916 junk_work_tree
= work_tree
;
917 set_git_work_tree(work_tree
);
920 junk_git_dir
= git_dir
;
921 if (safe_create_leading_directories_const(git_dir
) < 0)
922 die(_("could not create leading directories of '%s'"), git_dir
);
924 set_git_dir_init(git_dir
, real_git_dir
, 0);
926 git_dir
= real_git_dir
;
927 junk_git_dir
= real_git_dir
;
930 if (0 <= option_verbosity
) {
932 fprintf(stderr
, _("Cloning into bare repository '%s'...\n"), dir
);
934 fprintf(stderr
, _("Cloning into '%s'...\n"), dir
);
936 init_db(option_template
, INIT_DB_QUIET
);
937 write_config(&option_config
);
939 git_config(git_default_config
, NULL
);
943 src_ref_prefix
= "refs/";
944 strbuf_addstr(&branch_top
, src_ref_prefix
);
946 git_config_set("core.bare", "true");
948 strbuf_addf(&branch_top
, "refs/remotes/%s/", option_origin
);
951 strbuf_addf(&value
, "+%s*:%s*", src_ref_prefix
, branch_top
.buf
);
952 strbuf_addf(&key
, "remote.%s.url", option_origin
);
953 git_config_set(key
.buf
, repo
);
956 if (option_reference
.nr
)
958 else if (option_dissociate
) {
959 warning(_("--dissociate given, but there is no --reference"));
960 option_dissociate
= 0;
963 fetch_pattern
= value
.buf
;
964 refspec
= parse_fetch_refspec(1, &fetch_pattern
);
966 strbuf_reset(&value
);
968 remote
= remote_get(option_origin
);
969 transport
= transport_get(remote
, remote
->url
[0]);
970 transport_set_verbosity(transport
, option_verbosity
, option_progress
);
972 path
= get_repo_path(remote
->url
[0], &is_bundle
);
973 is_local
= option_local
!= 0 && path
&& !is_bundle
;
976 warning(_("--depth is ignored in local clones; use file:// instead."));
977 if (!access(mkpath("%s/shallow", path
), F_OK
)) {
978 if (option_local
> 0)
979 warning(_("source repository is shallow, ignoring --local"));
983 if (option_local
> 0 && !is_local
)
984 warning(_("--local is ignored"));
985 transport
->cloning
= 1;
987 if (!transport
->get_refs_list
|| (!is_local
&& !transport
->fetch
))
988 die(_("Don't know how to clone %s"), transport
->url
);
990 transport_set_option(transport
, TRANS_OPT_KEEP
, "yes");
993 transport_set_option(transport
, TRANS_OPT_DEPTH
,
995 if (option_single_branch
)
996 transport_set_option(transport
, TRANS_OPT_FOLLOWTAGS
, "1");
998 if (option_upload_pack
)
999 transport_set_option(transport
, TRANS_OPT_UPLOADPACK
,
1000 option_upload_pack
);
1002 if (transport
->smart_options
&& !option_depth
)
1003 transport
->smart_options
->check_self_contained_and_connected
= 1;
1005 refs
= transport_get_remote_refs(transport
);
1008 mapped_refs
= wanted_peer_refs(refs
, refspec
);
1010 * transport_get_remote_refs() may return refs with null sha-1
1011 * in mapped_refs (see struct transport->get_refs_list
1012 * comment). In that case we need fetch it early because
1013 * remote_head code below relies on it.
1015 * for normal clones, transport_get_remote_refs() should
1016 * return reliable ref set, we can delay cloning until after
1017 * remote HEAD check.
1019 for (ref
= refs
; ref
; ref
= ref
->next
)
1020 if (is_null_sha1(ref
->old_sha1
)) {
1021 complete_refs_before_fetch
= 0;
1025 if (!is_local
&& !complete_refs_before_fetch
)
1026 transport_fetch_refs(transport
, mapped_refs
);
1028 remote_head
= find_ref_by_name(refs
, "HEAD");
1029 remote_head_points_at
=
1030 guess_remote_head(remote_head
, mapped_refs
, 0);
1032 if (option_branch
) {
1033 our_head_points_at
=
1034 find_remote_branch(mapped_refs
, option_branch
);
1036 if (!our_head_points_at
)
1037 die(_("Remote branch %s not found in upstream %s"),
1038 option_branch
, option_origin
);
1041 our_head_points_at
= remote_head_points_at
;
1045 die(_("Remote branch %s not found in upstream %s"),
1046 option_branch
, option_origin
);
1048 warning(_("You appear to have cloned an empty repository."));
1050 our_head_points_at
= NULL
;
1051 remote_head_points_at
= NULL
;
1053 option_no_checkout
= 1;
1055 install_branch_config(0, "master", option_origin
,
1056 "refs/heads/master");
1059 write_refspec_config(src_ref_prefix
, our_head_points_at
,
1060 remote_head_points_at
, &branch_top
);
1063 clone_local(path
, git_dir
);
1064 else if (refs
&& complete_refs_before_fetch
)
1065 transport_fetch_refs(transport
, mapped_refs
);
1067 update_remote_refs(refs
, mapped_refs
, remote_head_points_at
,
1068 branch_top
.buf
, reflog_msg
.buf
, transport
, !is_local
);
1070 update_head(our_head_points_at
, remote_head
, reflog_msg
.buf
);
1072 transport_unlock_pack(transport
);
1073 transport_disconnect(transport
);
1075 if (option_dissociate
)
1076 dissociate_from_references();
1078 junk_mode
= JUNK_LEAVE_REPO
;
1081 strbuf_release(&reflog_msg
);
1082 strbuf_release(&branch_top
);
1083 strbuf_release(&key
);
1084 strbuf_release(&value
);
1085 junk_mode
= JUNK_LEAVE_ALL
;