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 enum transport_family family
;
51 static struct string_list option_config
;
52 static struct string_list option_reference
;
53 static int option_dissociate
;
55 static struct option builtin_clone_options
[] = {
56 OPT__VERBOSITY(&option_verbosity
),
57 OPT_BOOL(0, "progress", &option_progress
,
58 N_("force progress reporting")),
59 OPT_BOOL('n', "no-checkout", &option_no_checkout
,
60 N_("don't create a checkout")),
61 OPT_BOOL(0, "bare", &option_bare
, N_("create a bare repository")),
62 OPT_HIDDEN_BOOL(0, "naked", &option_bare
,
63 N_("create a bare repository")),
64 OPT_BOOL(0, "mirror", &option_mirror
,
65 N_("create a mirror repository (implies bare)")),
66 OPT_BOOL('l', "local", &option_local
,
67 N_("to clone from a local repository")),
68 OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks
,
69 N_("don't use local hardlinks, always copy")),
70 OPT_BOOL('s', "shared", &option_shared
,
71 N_("setup as shared repository")),
72 OPT_BOOL(0, "recursive", &option_recursive
,
73 N_("initialize submodules in the clone")),
74 OPT_BOOL(0, "recurse-submodules", &option_recursive
,
75 N_("initialize submodules in the clone")),
76 OPT_STRING(0, "template", &option_template
, N_("template-directory"),
77 N_("directory from which templates will be used")),
78 OPT_STRING_LIST(0, "reference", &option_reference
, N_("repo"),
79 N_("reference repository")),
80 OPT_BOOL(0, "dissociate", &option_dissociate
,
81 N_("use --reference only while cloning")),
82 OPT_STRING('o', "origin", &option_origin
, N_("name"),
83 N_("use <name> instead of 'origin' to track upstream")),
84 OPT_STRING('b', "branch", &option_branch
, N_("branch"),
85 N_("checkout <branch> instead of the remote's HEAD")),
86 OPT_STRING('u', "upload-pack", &option_upload_pack
, N_("path"),
87 N_("path to git-upload-pack on the remote")),
88 OPT_STRING(0, "depth", &option_depth
, N_("depth"),
89 N_("create a shallow clone of that depth")),
90 OPT_BOOL(0, "single-branch", &option_single_branch
,
91 N_("clone only one branch, HEAD or --branch")),
92 OPT_STRING(0, "separate-git-dir", &real_git_dir
, N_("gitdir"),
93 N_("separate git dir from working tree")),
94 OPT_STRING_LIST('c', "config", &option_config
, N_("key=value"),
95 N_("set config inside the new repository")),
96 OPT_SET_INT('4', "ipv4", &family
, N_("use IPv4 addresses only"),
97 TRANSPORT_FAMILY_IPV4
),
98 OPT_SET_INT('6', "ipv6", &family
, N_("use IPv6 addresses only"),
99 TRANSPORT_FAMILY_IPV6
),
103 static const char *argv_submodule
[] = {
104 "submodule", "update", "--init", "--recursive", NULL
107 static const char *get_repo_path_1(struct strbuf
*path
, int *is_bundle
)
109 static char *suffix
[] = { "/.git", "", ".git/.git", ".git" };
110 static char *bundle_suffix
[] = { ".bundle", "" };
111 size_t baselen
= path
->len
;
115 for (i
= 0; i
< ARRAY_SIZE(suffix
); i
++) {
116 strbuf_setlen(path
, baselen
);
117 strbuf_addstr(path
, suffix
[i
]);
118 if (stat(path
->buf
, &st
))
120 if (S_ISDIR(st
.st_mode
) && is_git_directory(path
->buf
)) {
123 } else if (S_ISREG(st
.st_mode
) && st
.st_size
> 8) {
124 /* Is it a "gitfile"? */
127 int len
, fd
= open(path
->buf
, O_RDONLY
);
130 len
= read_in_full(fd
, signature
, 8);
132 if (len
!= 8 || strncmp(signature
, "gitdir: ", 8))
134 dst
= read_gitfile(path
->buf
);
142 for (i
= 0; i
< ARRAY_SIZE(bundle_suffix
); i
++) {
143 strbuf_setlen(path
, baselen
);
144 strbuf_addstr(path
, bundle_suffix
[i
]);
145 if (!stat(path
->buf
, &st
) && S_ISREG(st
.st_mode
)) {
154 static char *get_repo_path(const char *repo
, int *is_bundle
)
156 struct strbuf path
= STRBUF_INIT
;
160 strbuf_addstr(&path
, repo
);
161 raw
= get_repo_path_1(&path
, is_bundle
);
162 canon
= raw
? xstrdup(absolute_path(raw
)) : NULL
;
163 strbuf_release(&path
);
167 static char *guess_dir_name(const char *repo
, int is_bundle
, int is_bare
)
169 const char *end
= repo
+ strlen(repo
), *start
, *ptr
;
176 start
= strstr(repo
, "://");
183 * Skip authentication data. The stripping does happen
184 * greedily, such that we strip up to the last '@' inside
187 for (ptr
= start
; ptr
< end
&& !is_dir_sep(*ptr
); ptr
++) {
193 * Strip trailing spaces, slashes and /.git
195 while (start
< end
&& (is_dir_sep(end
[-1]) || isspace(end
[-1])))
197 if (end
- start
> 5 && is_dir_sep(end
[-5]) &&
198 !strncmp(end
- 4, ".git", 4)) {
200 while (start
< end
&& is_dir_sep(end
[-1]))
205 * Strip trailing port number if we've got only a
206 * hostname (that is, there is no dir separator but a
207 * colon). This check is required such that we do not
208 * strip URI's like '/foo/bar:2222.git', which should
209 * result in a dir '2222' being guessed due to backwards
212 if (memchr(start
, '/', end
- start
) == NULL
213 && memchr(start
, ':', end
- start
) != NULL
) {
215 while (start
< ptr
&& isdigit(ptr
[-1]) && ptr
[-1] != ':')
217 if (start
< ptr
&& ptr
[-1] == ':')
222 * Find last component. To remain backwards compatible we
223 * also regard colons as path separators, such that
224 * cloning a repository 'foo:bar.git' would result in a
225 * directory 'bar' being guessed.
228 while (start
< ptr
&& !is_dir_sep(ptr
[-1]) && ptr
[-1] != ':')
233 * Strip .{bundle,git}.
236 strip_suffix_mem(start
, &len
, is_bundle
? ".bundle" : ".git");
238 if (!len
|| (len
== 1 && *start
== '/'))
239 die("No directory name could be guessed.\n"
240 "Please specify a directory on the command line");
243 dir
= xstrfmt("%.*s.git", (int)len
, start
);
245 dir
= xstrndup(start
, len
);
247 * Replace sequences of 'control' characters and whitespace
248 * with one ascii space, remove leading and trailing spaces.
252 int prev_space
= 1 /* strip leading whitespace */;
253 for (end
= dir
; *end
; ++end
) {
255 if ((unsigned char)ch
< '\x20')
266 if (out
> dir
&& prev_space
)
272 static void strip_trailing_slashes(char *dir
)
274 char *end
= dir
+ strlen(dir
);
276 while (dir
< end
- 1 && is_dir_sep(end
[-1]))
281 static int add_one_reference(struct string_list_item
*item
, void *cb_data
)
285 struct strbuf alternate
= STRBUF_INIT
;
287 /* Beware: read_gitfile(), real_path() and mkpath() return static buffer */
288 ref_git
= xstrdup(real_path(item
->string
));
290 repo
= read_gitfile(ref_git
);
292 repo
= read_gitfile(mkpath("%s/.git", ref_git
));
295 ref_git
= xstrdup(repo
);
298 if (!repo
&& is_directory(mkpath("%s/.git/objects", ref_git
))) {
299 char *ref_git_git
= mkpathdup("%s/.git", ref_git
);
301 ref_git
= ref_git_git
;
302 } else if (!is_directory(mkpath("%s/objects", ref_git
))) {
303 struct strbuf sb
= STRBUF_INIT
;
304 if (get_common_dir(&sb
, ref_git
))
305 die(_("reference repository '%s' as a linked checkout is not supported yet."),
307 die(_("reference repository '%s' is not a local repository."),
311 if (!access(mkpath("%s/shallow", ref_git
), F_OK
))
312 die(_("reference repository '%s' is shallow"), item
->string
);
314 if (!access(mkpath("%s/info/grafts", ref_git
), F_OK
))
315 die(_("reference repository '%s' is grafted"), item
->string
);
317 strbuf_addf(&alternate
, "%s/objects", ref_git
);
318 add_to_alternates_file(alternate
.buf
);
319 strbuf_release(&alternate
);
324 static void setup_reference(void)
326 for_each_string_list(&option_reference
, add_one_reference
, NULL
);
329 static void copy_alternates(struct strbuf
*src
, struct strbuf
*dst
,
330 const char *src_repo
)
333 * Read from the source objects/info/alternates file
334 * and copy the entries to corresponding file in the
335 * destination repository with add_to_alternates_file().
336 * Both src and dst have "$path/objects/info/alternates".
338 * Instead of copying bit-for-bit from the original,
339 * we need to append to existing one so that the already
340 * created entry via "clone -s" is not lost, and also
341 * to turn entries with paths relative to the original
342 * absolute, so that they can be used in the new repository.
344 FILE *in
= fopen(src
->buf
, "r");
345 struct strbuf line
= STRBUF_INIT
;
347 while (strbuf_getline(&line
, in
, '\n') != EOF
) {
349 if (!line
.len
|| line
.buf
[0] == '#')
351 if (is_absolute_path(line
.buf
)) {
352 add_to_alternates_file(line
.buf
);
355 abs_path
= mkpathdup("%s/objects/%s", src_repo
, line
.buf
);
356 normalize_path_copy(abs_path
, abs_path
);
357 add_to_alternates_file(abs_path
);
360 strbuf_release(&line
);
364 static void copy_or_link_directory(struct strbuf
*src
, struct strbuf
*dest
,
365 const char *src_repo
, int src_baselen
)
369 int src_len
, dest_len
;
372 dir
= opendir(src
->buf
);
374 die_errno(_("failed to open '%s'"), src
->buf
);
376 if (mkdir(dest
->buf
, 0777)) {
378 die_errno(_("failed to create directory '%s'"), dest
->buf
);
379 else if (stat(dest
->buf
, &buf
))
380 die_errno(_("failed to stat '%s'"), dest
->buf
);
381 else if (!S_ISDIR(buf
.st_mode
))
382 die(_("%s exists and is not a directory"), dest
->buf
);
385 strbuf_addch(src
, '/');
387 strbuf_addch(dest
, '/');
388 dest_len
= dest
->len
;
390 while ((de
= readdir(dir
)) != NULL
) {
391 strbuf_setlen(src
, src_len
);
392 strbuf_addstr(src
, de
->d_name
);
393 strbuf_setlen(dest
, dest_len
);
394 strbuf_addstr(dest
, de
->d_name
);
395 if (stat(src
->buf
, &buf
)) {
396 warning (_("failed to stat %s\n"), src
->buf
);
399 if (S_ISDIR(buf
.st_mode
)) {
400 if (de
->d_name
[0] != '.')
401 copy_or_link_directory(src
, dest
,
402 src_repo
, src_baselen
);
406 /* Files that cannot be copied bit-for-bit... */
407 if (!strcmp(src
->buf
+ src_baselen
, "/info/alternates")) {
408 copy_alternates(src
, dest
, src_repo
);
412 if (unlink(dest
->buf
) && errno
!= ENOENT
)
413 die_errno(_("failed to unlink '%s'"), dest
->buf
);
414 if (!option_no_hardlinks
) {
415 if (!link(src
->buf
, dest
->buf
))
417 if (option_local
> 0)
418 die_errno(_("failed to create link '%s'"), dest
->buf
);
419 option_no_hardlinks
= 1;
421 if (copy_file_with_time(dest
->buf
, src
->buf
, 0666))
422 die_errno(_("failed to copy file to '%s'"), dest
->buf
);
427 static void clone_local(const char *src_repo
, const char *dest_repo
)
430 struct strbuf alt
= STRBUF_INIT
;
431 strbuf_addf(&alt
, "%s/objects", src_repo
);
432 add_to_alternates_file(alt
.buf
);
433 strbuf_release(&alt
);
435 struct strbuf src
= STRBUF_INIT
;
436 struct strbuf dest
= STRBUF_INIT
;
437 get_common_dir(&src
, src_repo
);
438 get_common_dir(&dest
, dest_repo
);
439 strbuf_addstr(&src
, "/objects");
440 strbuf_addstr(&dest
, "/objects");
441 copy_or_link_directory(&src
, &dest
, src_repo
, src
.len
);
442 strbuf_release(&src
);
443 strbuf_release(&dest
);
446 if (0 <= option_verbosity
)
447 fprintf(stderr
, _("done.\n"));
450 static const char *junk_work_tree
;
451 static const char *junk_git_dir
;
456 } junk_mode
= JUNK_LEAVE_NONE
;
458 static const char junk_leave_repo_msg
[] =
459 N_("Clone succeeded, but checkout failed.\n"
460 "You can inspect what was checked out with 'git status'\n"
461 "and retry the checkout with 'git checkout -f HEAD'\n");
463 static void remove_junk(void)
465 struct strbuf sb
= STRBUF_INIT
;
468 case JUNK_LEAVE_REPO
:
469 warning("%s", _(junk_leave_repo_msg
));
474 /* proceed to removal */
479 strbuf_addstr(&sb
, junk_git_dir
);
480 remove_dir_recursively(&sb
, 0);
483 if (junk_work_tree
) {
484 strbuf_addstr(&sb
, junk_work_tree
);
485 remove_dir_recursively(&sb
, 0);
490 static void remove_junk_on_signal(int signo
)
497 static struct ref
*find_remote_branch(const struct ref
*refs
, const char *branch
)
500 struct strbuf head
= STRBUF_INIT
;
501 strbuf_addstr(&head
, "refs/heads/");
502 strbuf_addstr(&head
, branch
);
503 ref
= find_ref_by_name(refs
, head
.buf
);
504 strbuf_release(&head
);
509 strbuf_addstr(&head
, "refs/tags/");
510 strbuf_addstr(&head
, branch
);
511 ref
= find_ref_by_name(refs
, head
.buf
);
512 strbuf_release(&head
);
517 static struct ref
*wanted_peer_refs(const struct ref
*refs
,
518 struct refspec
*refspec
)
520 struct ref
*head
= copy_ref(find_ref_by_name(refs
, "HEAD"));
521 struct ref
*local_refs
= head
;
522 struct ref
**tail
= head
? &head
->next
: &local_refs
;
524 if (option_single_branch
) {
525 struct ref
*remote_head
= NULL
;
528 remote_head
= guess_remote_head(head
, refs
, 0);
532 remote_head
= copy_ref(find_remote_branch(refs
, option_branch
));
535 if (!remote_head
&& option_branch
)
536 warning(_("Could not find remote branch %s to clone."),
539 get_fetch_map(remote_head
, refspec
, &tail
, 0);
541 /* if --branch=tag, pull the requested tag explicitly */
542 get_fetch_map(remote_head
, tag_refspec
, &tail
, 0);
545 get_fetch_map(refs
, refspec
, &tail
, 0);
547 if (!option_mirror
&& !option_single_branch
)
548 get_fetch_map(refs
, tag_refspec
, &tail
, 0);
553 static void write_remote_refs(const struct ref
*local_refs
)
557 struct ref_transaction
*t
;
558 struct strbuf err
= STRBUF_INIT
;
560 t
= ref_transaction_begin(&err
);
564 for (r
= local_refs
; r
; r
= r
->next
) {
567 if (ref_transaction_create(t
, r
->peer_ref
->name
, r
->old_oid
.hash
,
572 if (initial_ref_transaction_commit(t
, &err
))
575 strbuf_release(&err
);
576 ref_transaction_free(t
);
579 static void write_followtags(const struct ref
*refs
, const char *msg
)
581 const struct ref
*ref
;
582 for (ref
= refs
; ref
; ref
= ref
->next
) {
583 if (!starts_with(ref
->name
, "refs/tags/"))
585 if (ends_with(ref
->name
, "^{}"))
587 if (!has_object_file(&ref
->old_oid
))
589 update_ref(msg
, ref
->name
, ref
->old_oid
.hash
,
590 NULL
, 0, UPDATE_REFS_DIE_ON_ERR
);
594 static int iterate_ref_map(void *cb_data
, unsigned char sha1
[20])
596 struct ref
**rm
= cb_data
;
597 struct ref
*ref
= *rm
;
600 * Skip anything missing a peer_ref, which we are not
601 * actually going to write a ref for.
603 while (ref
&& !ref
->peer_ref
)
605 /* Returning -1 notes "end of list" to the caller. */
609 hashcpy(sha1
, ref
->old_oid
.hash
);
614 static void update_remote_refs(const struct ref
*refs
,
615 const struct ref
*mapped_refs
,
616 const struct ref
*remote_head_points_at
,
617 const char *branch_top
,
619 struct transport
*transport
,
620 int check_connectivity
)
622 const struct ref
*rm
= mapped_refs
;
624 if (check_connectivity
) {
625 if (transport
->progress
)
626 fprintf(stderr
, _("Checking connectivity... "));
627 if (check_everything_connected_with_transport(iterate_ref_map
,
629 die(_("remote did not send all necessary objects"));
630 if (transport
->progress
)
631 fprintf(stderr
, _("done.\n"));
635 write_remote_refs(mapped_refs
);
636 if (option_single_branch
)
637 write_followtags(refs
, msg
);
640 if (remote_head_points_at
&& !option_bare
) {
641 struct strbuf head_ref
= STRBUF_INIT
;
642 strbuf_addstr(&head_ref
, branch_top
);
643 strbuf_addstr(&head_ref
, "HEAD");
644 create_symref(head_ref
.buf
,
645 remote_head_points_at
->peer_ref
->name
,
650 static void update_head(const struct ref
*our
, const struct ref
*remote
,
654 if (our
&& skip_prefix(our
->name
, "refs/heads/", &head
)) {
655 /* Local default branch link */
656 create_symref("HEAD", our
->name
, NULL
);
658 update_ref(msg
, "HEAD", our
->old_oid
.hash
, NULL
, 0,
659 UPDATE_REFS_DIE_ON_ERR
);
660 install_branch_config(0, head
, option_origin
, our
->name
);
663 struct commit
*c
= lookup_commit_reference(our
->old_oid
.hash
);
664 /* --branch specifies a non-branch (i.e. tags), detach HEAD */
665 update_ref(msg
, "HEAD", c
->object
.oid
.hash
,
666 NULL
, REF_NODEREF
, UPDATE_REFS_DIE_ON_ERR
);
669 * We know remote HEAD points to a non-branch, or
670 * HEAD points to a branch but we don't know which one.
671 * Detach HEAD in all these cases.
673 update_ref(msg
, "HEAD", remote
->old_oid
.hash
,
674 NULL
, REF_NODEREF
, UPDATE_REFS_DIE_ON_ERR
);
678 static int checkout(void)
680 unsigned char sha1
[20];
682 struct lock_file
*lock_file
;
683 struct unpack_trees_options opts
;
688 if (option_no_checkout
)
691 head
= resolve_refdup("HEAD", RESOLVE_REF_READING
, sha1
, NULL
);
693 warning(_("remote HEAD refers to nonexistent ref, "
694 "unable to checkout.\n"));
697 if (!strcmp(head
, "HEAD")) {
698 if (advice_detached_head
)
699 detach_advice(sha1_to_hex(sha1
));
701 if (!starts_with(head
, "refs/heads/"))
702 die(_("HEAD not found below refs/heads!"));
706 /* We need to be in the new work tree for the checkout */
709 lock_file
= xcalloc(1, sizeof(struct lock_file
));
710 hold_locked_index(lock_file
, 1);
712 memset(&opts
, 0, sizeof opts
);
715 opts
.fn
= oneway_merge
;
716 opts
.verbose_update
= (option_verbosity
>= 0);
717 opts
.src_index
= &the_index
;
718 opts
.dst_index
= &the_index
;
720 tree
= parse_tree_indirect(sha1
);
722 init_tree_desc(&t
, tree
->buffer
, tree
->size
);
723 if (unpack_trees(1, &t
, &opts
) < 0)
724 die(_("unable to checkout working tree"));
726 if (write_locked_index(&the_index
, lock_file
, COMMIT_LOCK
))
727 die(_("unable to write new index file"));
729 err
|= run_hook_le(NULL
, "post-checkout", sha1_to_hex(null_sha1
),
730 sha1_to_hex(sha1
), "1", NULL
);
732 if (!err
&& option_recursive
)
733 err
= run_command_v_opt(argv_submodule
, RUN_GIT_CMD
);
738 static int write_one_config(const char *key
, const char *value
, void *data
)
740 return git_config_set_multivar(key
, value
? value
: "true", "^$", 0);
743 static void write_config(struct string_list
*config
)
747 for (i
= 0; i
< config
->nr
; i
++) {
748 if (git_config_parse_parameter(config
->items
[i
].string
,
749 write_one_config
, NULL
) < 0)
750 die("unable to write parameters to config file");
754 static void write_refspec_config(const char *src_ref_prefix
,
755 const struct ref
*our_head_points_at
,
756 const struct ref
*remote_head_points_at
,
757 struct strbuf
*branch_top
)
759 struct strbuf key
= STRBUF_INIT
;
760 struct strbuf value
= STRBUF_INIT
;
762 if (option_mirror
|| !option_bare
) {
763 if (option_single_branch
&& !option_mirror
) {
765 if (starts_with(our_head_points_at
->name
, "refs/tags/"))
766 strbuf_addf(&value
, "+%s:%s", our_head_points_at
->name
,
767 our_head_points_at
->name
);
769 strbuf_addf(&value
, "+%s:%s%s", our_head_points_at
->name
,
770 branch_top
->buf
, option_branch
);
771 } else if (remote_head_points_at
) {
772 const char *head
= remote_head_points_at
->name
;
773 if (!skip_prefix(head
, "refs/heads/", &head
))
774 die("BUG: remote HEAD points at non-head?");
776 strbuf_addf(&value
, "+%s:%s%s", remote_head_points_at
->name
,
777 branch_top
->buf
, head
);
780 * otherwise, the next "git fetch" will
781 * simply fetch from HEAD without updating
782 * any remote-tracking branch, which is what
786 strbuf_addf(&value
, "+%s*:%s*", src_ref_prefix
, branch_top
->buf
);
788 /* Configure the remote */
790 strbuf_addf(&key
, "remote.%s.fetch", option_origin
);
791 git_config_set_multivar(key
.buf
, value
.buf
, "^$", 0);
795 strbuf_addf(&key
, "remote.%s.mirror", option_origin
);
796 git_config_set(key
.buf
, "true");
802 strbuf_release(&key
);
803 strbuf_release(&value
);
806 static void dissociate_from_references(void)
808 static const char* argv
[] = { "repack", "-a", "-d", NULL
};
809 char *alternates
= git_pathdup("objects/info/alternates");
811 if (!access(alternates
, F_OK
)) {
812 if (run_command_v_opt(argv
, RUN_GIT_CMD
|RUN_COMMAND_NO_STDIN
))
813 die(_("cannot repack to clean up"));
814 if (unlink(alternates
) && errno
!= ENOENT
)
815 die_errno(_("cannot unlink temporary alternates file"));
820 int cmd_clone(int argc
, const char **argv
, const char *prefix
)
822 int is_bundle
= 0, is_local
;
824 const char *repo_name
, *repo
, *work_tree
, *git_dir
;
827 const struct ref
*refs
, *remote_head
;
828 const struct ref
*remote_head_points_at
;
829 const struct ref
*our_head_points_at
;
830 struct ref
*mapped_refs
;
831 const struct ref
*ref
;
832 struct strbuf key
= STRBUF_INIT
, value
= STRBUF_INIT
;
833 struct strbuf branch_top
= STRBUF_INIT
, reflog_msg
= STRBUF_INIT
;
834 struct transport
*transport
= NULL
;
835 const char *src_ref_prefix
= "refs/heads/";
836 struct remote
*remote
;
837 int err
= 0, complete_refs_before_fetch
= 1;
839 struct refspec
*refspec
;
840 const char *fetch_pattern
;
842 packet_trace_identity("clone");
843 argc
= parse_options(argc
, argv
, prefix
, builtin_clone_options
,
844 builtin_clone_usage
, 0);
847 usage_msg_opt(_("Too many arguments."),
848 builtin_clone_usage
, builtin_clone_options
);
851 usage_msg_opt(_("You must specify a repository to clone."),
852 builtin_clone_usage
, builtin_clone_options
);
854 if (option_single_branch
== -1)
855 option_single_branch
= option_depth
? 1 : 0;
862 die(_("--bare and --origin %s options are incompatible."),
865 die(_("--bare and --separate-git-dir are incompatible."));
866 option_no_checkout
= 1;
870 option_origin
= "origin";
874 path
= get_repo_path(repo_name
, &is_bundle
);
876 repo
= xstrdup(absolute_path(repo_name
));
877 else if (!strchr(repo_name
, ':'))
878 die(_("repository '%s' does not exist"), repo_name
);
882 /* no need to be strict, transport_set_option() will validate it again */
883 if (option_depth
&& atoi(option_depth
) < 1)
884 die(_("depth %s is not a positive number"), option_depth
);
887 dir
= xstrdup(argv
[1]);
889 dir
= guess_dir_name(repo_name
, is_bundle
, option_bare
);
890 strip_trailing_slashes(dir
);
892 dest_exists
= !stat(dir
, &buf
);
893 if (dest_exists
&& !is_empty_dir(dir
))
894 die(_("destination path '%s' already exists and is not "
895 "an empty directory."), dir
);
897 strbuf_addf(&reflog_msg
, "clone: from %s", repo
);
902 work_tree
= getenv("GIT_WORK_TREE");
903 if (work_tree
&& !stat(work_tree
, &buf
))
904 die(_("working tree '%s' already exists."), work_tree
);
907 if (option_bare
|| work_tree
)
908 git_dir
= xstrdup(dir
);
911 git_dir
= mkpathdup("%s/.git", dir
);
915 sigchain_push_common(remove_junk_on_signal
);
918 if (safe_create_leading_directories_const(work_tree
) < 0)
919 die_errno(_("could not create leading directories of '%s'"),
921 if (!dest_exists
&& mkdir(work_tree
, 0777))
922 die_errno(_("could not create work tree dir '%s'"),
924 junk_work_tree
= work_tree
;
925 set_git_work_tree(work_tree
);
928 junk_git_dir
= git_dir
;
929 if (safe_create_leading_directories_const(git_dir
) < 0)
930 die(_("could not create leading directories of '%s'"), git_dir
);
932 set_git_dir_init(git_dir
, real_git_dir
, 0);
934 git_dir
= real_git_dir
;
935 junk_git_dir
= real_git_dir
;
938 if (0 <= option_verbosity
) {
940 fprintf(stderr
, _("Cloning into bare repository '%s'...\n"), dir
);
942 fprintf(stderr
, _("Cloning into '%s'...\n"), dir
);
944 init_db(option_template
, INIT_DB_QUIET
);
945 write_config(&option_config
);
947 git_config(git_default_config
, NULL
);
951 src_ref_prefix
= "refs/";
952 strbuf_addstr(&branch_top
, src_ref_prefix
);
954 git_config_set("core.bare", "true");
956 strbuf_addf(&branch_top
, "refs/remotes/%s/", option_origin
);
959 strbuf_addf(&value
, "+%s*:%s*", src_ref_prefix
, branch_top
.buf
);
960 strbuf_addf(&key
, "remote.%s.url", option_origin
);
961 git_config_set(key
.buf
, repo
);
964 if (option_reference
.nr
)
967 fetch_pattern
= value
.buf
;
968 refspec
= parse_fetch_refspec(1, &fetch_pattern
);
970 strbuf_reset(&value
);
972 remote
= remote_get(option_origin
);
973 transport
= transport_get(remote
, remote
->url
[0]);
974 transport_set_verbosity(transport
, option_verbosity
, option_progress
);
975 transport
->family
= family
;
977 path
= get_repo_path(remote
->url
[0], &is_bundle
);
978 is_local
= option_local
!= 0 && path
&& !is_bundle
;
981 warning(_("--depth is ignored in local clones; use file:// instead."));
982 if (!access(mkpath("%s/shallow", path
), F_OK
)) {
983 if (option_local
> 0)
984 warning(_("source repository is shallow, ignoring --local"));
988 if (option_local
> 0 && !is_local
)
989 warning(_("--local is ignored"));
990 transport
->cloning
= 1;
992 if (!transport
->get_refs_list
|| (!is_local
&& !transport
->fetch
))
993 die(_("Don't know how to clone %s"), transport
->url
);
995 transport_set_option(transport
, TRANS_OPT_KEEP
, "yes");
998 transport_set_option(transport
, TRANS_OPT_DEPTH
,
1000 if (option_single_branch
)
1001 transport_set_option(transport
, TRANS_OPT_FOLLOWTAGS
, "1");
1003 if (option_upload_pack
)
1004 transport_set_option(transport
, TRANS_OPT_UPLOADPACK
,
1005 option_upload_pack
);
1007 if (transport
->smart_options
&& !option_depth
)
1008 transport
->smart_options
->check_self_contained_and_connected
= 1;
1010 refs
= transport_get_remote_refs(transport
);
1013 mapped_refs
= wanted_peer_refs(refs
, refspec
);
1015 * transport_get_remote_refs() may return refs with null sha-1
1016 * in mapped_refs (see struct transport->get_refs_list
1017 * comment). In that case we need fetch it early because
1018 * remote_head code below relies on it.
1020 * for normal clones, transport_get_remote_refs() should
1021 * return reliable ref set, we can delay cloning until after
1022 * remote HEAD check.
1024 for (ref
= refs
; ref
; ref
= ref
->next
)
1025 if (is_null_oid(&ref
->old_oid
)) {
1026 complete_refs_before_fetch
= 0;
1030 if (!is_local
&& !complete_refs_before_fetch
)
1031 transport_fetch_refs(transport
, mapped_refs
);
1033 remote_head
= find_ref_by_name(refs
, "HEAD");
1034 remote_head_points_at
=
1035 guess_remote_head(remote_head
, mapped_refs
, 0);
1037 if (option_branch
) {
1038 our_head_points_at
=
1039 find_remote_branch(mapped_refs
, option_branch
);
1041 if (!our_head_points_at
)
1042 die(_("Remote branch %s not found in upstream %s"),
1043 option_branch
, option_origin
);
1046 our_head_points_at
= remote_head_points_at
;
1050 die(_("Remote branch %s not found in upstream %s"),
1051 option_branch
, option_origin
);
1053 warning(_("You appear to have cloned an empty repository."));
1055 our_head_points_at
= NULL
;
1056 remote_head_points_at
= NULL
;
1058 option_no_checkout
= 1;
1060 install_branch_config(0, "master", option_origin
,
1061 "refs/heads/master");
1064 write_refspec_config(src_ref_prefix
, our_head_points_at
,
1065 remote_head_points_at
, &branch_top
);
1068 clone_local(path
, git_dir
);
1069 else if (refs
&& complete_refs_before_fetch
)
1070 transport_fetch_refs(transport
, mapped_refs
);
1072 update_remote_refs(refs
, mapped_refs
, remote_head_points_at
,
1073 branch_top
.buf
, reflog_msg
.buf
, transport
, !is_local
);
1075 update_head(our_head_points_at
, remote_head
, reflog_msg
.buf
);
1077 transport_unlock_pack(transport
);
1078 transport_disconnect(transport
);
1080 if (option_dissociate
) {
1082 dissociate_from_references();
1085 junk_mode
= JUNK_LEAVE_REPO
;
1088 strbuf_release(&reflog_msg
);
1089 strbuf_release(&branch_top
);
1090 strbuf_release(&key
);
1091 strbuf_release(&value
);
1092 junk_mode
= JUNK_LEAVE_ALL
;