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 int option_shallow_submodules
;
45 static char *option_template
, *option_depth
, *option_since
;
46 static char *option_origin
= NULL
;
47 static char *option_branch
= NULL
;
48 static struct string_list option_not
= STRING_LIST_INIT_NODUP
;
49 static const char *real_git_dir
;
50 static char *option_upload_pack
= "git-upload-pack";
51 static int option_verbosity
;
52 static int option_progress
= -1;
53 static enum transport_family family
;
54 static struct string_list option_config
= STRING_LIST_INIT_NODUP
;
55 static struct string_list option_required_reference
= STRING_LIST_INIT_NODUP
;
56 static struct string_list option_optional_reference
= STRING_LIST_INIT_NODUP
;
57 static int option_dissociate
;
58 static int max_jobs
= -1;
60 static struct option builtin_clone_options
[] = {
61 OPT__VERBOSITY(&option_verbosity
),
62 OPT_BOOL(0, "progress", &option_progress
,
63 N_("force progress reporting")),
64 OPT_BOOL('n', "no-checkout", &option_no_checkout
,
65 N_("don't create a checkout")),
66 OPT_BOOL(0, "bare", &option_bare
, N_("create a bare repository")),
67 OPT_HIDDEN_BOOL(0, "naked", &option_bare
,
68 N_("create a bare repository")),
69 OPT_BOOL(0, "mirror", &option_mirror
,
70 N_("create a mirror repository (implies bare)")),
71 OPT_BOOL('l', "local", &option_local
,
72 N_("to clone from a local repository")),
73 OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks
,
74 N_("don't use local hardlinks, always copy")),
75 OPT_BOOL('s', "shared", &option_shared
,
76 N_("setup as shared repository")),
77 OPT_BOOL(0, "recursive", &option_recursive
,
78 N_("initialize submodules in the clone")),
79 OPT_BOOL(0, "recurse-submodules", &option_recursive
,
80 N_("initialize submodules in the clone")),
81 OPT_INTEGER('j', "jobs", &max_jobs
,
82 N_("number of submodules cloned in parallel")),
83 OPT_STRING(0, "template", &option_template
, N_("template-directory"),
84 N_("directory from which templates will be used")),
85 OPT_STRING_LIST(0, "reference", &option_required_reference
, N_("repo"),
86 N_("reference repository")),
87 OPT_STRING_LIST(0, "reference-if-able", &option_optional_reference
,
88 N_("repo"), N_("reference repository")),
89 OPT_BOOL(0, "dissociate", &option_dissociate
,
90 N_("use --reference only while cloning")),
91 OPT_STRING('o', "origin", &option_origin
, N_("name"),
92 N_("use <name> instead of 'origin' to track upstream")),
93 OPT_STRING('b', "branch", &option_branch
, N_("branch"),
94 N_("checkout <branch> instead of the remote's HEAD")),
95 OPT_STRING('u', "upload-pack", &option_upload_pack
, N_("path"),
96 N_("path to git-upload-pack on the remote")),
97 OPT_STRING(0, "depth", &option_depth
, N_("depth"),
98 N_("create a shallow clone of that depth")),
99 OPT_STRING(0, "shallow-since", &option_since
, N_("time"),
100 N_("create a shallow clone since a specific time")),
101 OPT_STRING_LIST(0, "shallow-exclude", &option_not
, N_("revision"),
102 N_("deepen history of shallow clone, excluding rev")),
103 OPT_BOOL(0, "single-branch", &option_single_branch
,
104 N_("clone only one branch, HEAD or --branch")),
105 OPT_BOOL(0, "shallow-submodules", &option_shallow_submodules
,
106 N_("any cloned submodules will be shallow")),
107 OPT_STRING(0, "separate-git-dir", &real_git_dir
, N_("gitdir"),
108 N_("separate git dir from working tree")),
109 OPT_STRING_LIST('c', "config", &option_config
, N_("key=value"),
110 N_("set config inside the new repository")),
111 OPT_SET_INT('4', "ipv4", &family
, N_("use IPv4 addresses only"),
112 TRANSPORT_FAMILY_IPV4
),
113 OPT_SET_INT('6', "ipv6", &family
, N_("use IPv6 addresses only"),
114 TRANSPORT_FAMILY_IPV6
),
118 static const char *get_repo_path_1(struct strbuf
*path
, int *is_bundle
)
120 static char *suffix
[] = { "/.git", "", ".git/.git", ".git" };
121 static char *bundle_suffix
[] = { ".bundle", "" };
122 size_t baselen
= path
->len
;
126 for (i
= 0; i
< ARRAY_SIZE(suffix
); i
++) {
127 strbuf_setlen(path
, baselen
);
128 strbuf_addstr(path
, suffix
[i
]);
129 if (stat(path
->buf
, &st
))
131 if (S_ISDIR(st
.st_mode
) && is_git_directory(path
->buf
)) {
134 } else if (S_ISREG(st
.st_mode
) && st
.st_size
> 8) {
135 /* Is it a "gitfile"? */
138 int len
, fd
= open(path
->buf
, O_RDONLY
);
141 len
= read_in_full(fd
, signature
, 8);
143 if (len
!= 8 || strncmp(signature
, "gitdir: ", 8))
145 dst
= read_gitfile(path
->buf
);
153 for (i
= 0; i
< ARRAY_SIZE(bundle_suffix
); i
++) {
154 strbuf_setlen(path
, baselen
);
155 strbuf_addstr(path
, bundle_suffix
[i
]);
156 if (!stat(path
->buf
, &st
) && S_ISREG(st
.st_mode
)) {
165 static char *get_repo_path(const char *repo
, int *is_bundle
)
167 struct strbuf path
= STRBUF_INIT
;
171 strbuf_addstr(&path
, repo
);
172 raw
= get_repo_path_1(&path
, is_bundle
);
173 canon
= raw
? xstrdup(absolute_path(raw
)) : NULL
;
174 strbuf_release(&path
);
178 static char *guess_dir_name(const char *repo
, int is_bundle
, int is_bare
)
180 const char *end
= repo
+ strlen(repo
), *start
, *ptr
;
187 start
= strstr(repo
, "://");
194 * Skip authentication data. The stripping does happen
195 * greedily, such that we strip up to the last '@' inside
198 for (ptr
= start
; ptr
< end
&& !is_dir_sep(*ptr
); ptr
++) {
204 * Strip trailing spaces, slashes and /.git
206 while (start
< end
&& (is_dir_sep(end
[-1]) || isspace(end
[-1])))
208 if (end
- start
> 5 && is_dir_sep(end
[-5]) &&
209 !strncmp(end
- 4, ".git", 4)) {
211 while (start
< end
&& is_dir_sep(end
[-1]))
216 * Strip trailing port number if we've got only a
217 * hostname (that is, there is no dir separator but a
218 * colon). This check is required such that we do not
219 * strip URI's like '/foo/bar:2222.git', which should
220 * result in a dir '2222' being guessed due to backwards
223 if (memchr(start
, '/', end
- start
) == NULL
224 && memchr(start
, ':', end
- start
) != NULL
) {
226 while (start
< ptr
&& isdigit(ptr
[-1]) && ptr
[-1] != ':')
228 if (start
< ptr
&& ptr
[-1] == ':')
233 * Find last component. To remain backwards compatible we
234 * also regard colons as path separators, such that
235 * cloning a repository 'foo:bar.git' would result in a
236 * directory 'bar' being guessed.
239 while (start
< ptr
&& !is_dir_sep(ptr
[-1]) && ptr
[-1] != ':')
244 * Strip .{bundle,git}.
247 strip_suffix_mem(start
, &len
, is_bundle
? ".bundle" : ".git");
249 if (!len
|| (len
== 1 && *start
== '/'))
250 die(_("No directory name could be guessed.\n"
251 "Please specify a directory on the command line"));
254 dir
= xstrfmt("%.*s.git", (int)len
, start
);
256 dir
= xstrndup(start
, len
);
258 * Replace sequences of 'control' characters and whitespace
259 * with one ascii space, remove leading and trailing spaces.
263 int prev_space
= 1 /* strip leading whitespace */;
264 for (end
= dir
; *end
; ++end
) {
266 if ((unsigned char)ch
< '\x20')
277 if (out
> dir
&& prev_space
)
283 static void strip_trailing_slashes(char *dir
)
285 char *end
= dir
+ strlen(dir
);
287 while (dir
< end
- 1 && is_dir_sep(end
[-1]))
292 static int add_one_reference(struct string_list_item
*item
, void *cb_data
)
294 struct strbuf err
= STRBUF_INIT
;
295 int *required
= cb_data
;
296 char *ref_git
= compute_alternate_path(item
->string
, &err
);
303 _("info: Could not add alternate for '%s': %s\n"),
304 item
->string
, err
.buf
);
306 struct strbuf sb
= STRBUF_INIT
;
307 strbuf_addf(&sb
, "%s/objects", ref_git
);
308 add_to_alternates_file(sb
.buf
);
312 strbuf_release(&err
);
317 static void setup_reference(void)
320 for_each_string_list(&option_required_reference
,
321 add_one_reference
, &required
);
323 for_each_string_list(&option_optional_reference
,
324 add_one_reference
, &required
);
327 static void copy_alternates(struct strbuf
*src
, struct strbuf
*dst
,
328 const char *src_repo
)
331 * Read from the source objects/info/alternates file
332 * and copy the entries to corresponding file in the
333 * destination repository with add_to_alternates_file().
334 * Both src and dst have "$path/objects/info/alternates".
336 * Instead of copying bit-for-bit from the original,
337 * we need to append to existing one so that the already
338 * created entry via "clone -s" is not lost, and also
339 * to turn entries with paths relative to the original
340 * absolute, so that they can be used in the new repository.
342 FILE *in
= fopen(src
->buf
, "r");
343 struct strbuf line
= STRBUF_INIT
;
345 while (strbuf_getline(&line
, in
) != EOF
) {
347 if (!line
.len
|| line
.buf
[0] == '#')
349 if (is_absolute_path(line
.buf
)) {
350 add_to_alternates_file(line
.buf
);
353 abs_path
= mkpathdup("%s/objects/%s", src_repo
, line
.buf
);
354 if (!normalize_path_copy(abs_path
, abs_path
))
355 add_to_alternates_file(abs_path
);
357 warning("skipping invalid relative alternate: %s/%s",
361 strbuf_release(&line
);
365 static void copy_or_link_directory(struct strbuf
*src
, struct strbuf
*dest
,
366 const char *src_repo
, int src_baselen
)
370 int src_len
, dest_len
;
373 dir
= opendir(src
->buf
);
375 die_errno(_("failed to open '%s'"), src
->buf
);
377 if (mkdir(dest
->buf
, 0777)) {
379 die_errno(_("failed to create directory '%s'"), dest
->buf
);
380 else if (stat(dest
->buf
, &buf
))
381 die_errno(_("failed to stat '%s'"), dest
->buf
);
382 else if (!S_ISDIR(buf
.st_mode
))
383 die(_("%s exists and is not a directory"), dest
->buf
);
386 strbuf_addch(src
, '/');
388 strbuf_addch(dest
, '/');
389 dest_len
= dest
->len
;
391 while ((de
= readdir(dir
)) != NULL
) {
392 strbuf_setlen(src
, src_len
);
393 strbuf_addstr(src
, de
->d_name
);
394 strbuf_setlen(dest
, dest_len
);
395 strbuf_addstr(dest
, de
->d_name
);
396 if (stat(src
->buf
, &buf
)) {
397 warning (_("failed to stat %s\n"), src
->buf
);
400 if (S_ISDIR(buf
.st_mode
)) {
401 if (de
->d_name
[0] != '.')
402 copy_or_link_directory(src
, dest
,
403 src_repo
, src_baselen
);
407 /* Files that cannot be copied bit-for-bit... */
408 if (!strcmp(src
->buf
+ src_baselen
, "/info/alternates")) {
409 copy_alternates(src
, dest
, src_repo
);
413 if (unlink(dest
->buf
) && errno
!= ENOENT
)
414 die_errno(_("failed to unlink '%s'"), dest
->buf
);
415 if (!option_no_hardlinks
) {
416 if (!link(src
->buf
, dest
->buf
))
418 if (option_local
> 0)
419 die_errno(_("failed to create link '%s'"), dest
->buf
);
420 option_no_hardlinks
= 1;
422 if (copy_file_with_time(dest
->buf
, src
->buf
, 0666))
423 die_errno(_("failed to copy file to '%s'"), dest
->buf
);
428 static void clone_local(const char *src_repo
, const char *dest_repo
)
431 struct strbuf alt
= STRBUF_INIT
;
432 strbuf_addf(&alt
, "%s/objects", src_repo
);
433 add_to_alternates_file(alt
.buf
);
434 strbuf_release(&alt
);
436 struct strbuf src
= STRBUF_INIT
;
437 struct strbuf dest
= STRBUF_INIT
;
438 get_common_dir(&src
, src_repo
);
439 get_common_dir(&dest
, dest_repo
);
440 strbuf_addstr(&src
, "/objects");
441 strbuf_addstr(&dest
, "/objects");
442 copy_or_link_directory(&src
, &dest
, src_repo
, src
.len
);
443 strbuf_release(&src
);
444 strbuf_release(&dest
);
447 if (0 <= option_verbosity
)
448 fprintf(stderr
, _("done.\n"));
451 static const char *junk_work_tree
;
452 static const char *junk_git_dir
;
457 } junk_mode
= JUNK_LEAVE_NONE
;
459 static const char junk_leave_repo_msg
[] =
460 N_("Clone succeeded, but checkout failed.\n"
461 "You can inspect what was checked out with 'git status'\n"
462 "and retry the checkout with 'git checkout -f HEAD'\n");
464 static void remove_junk(void)
466 struct strbuf sb
= STRBUF_INIT
;
469 case JUNK_LEAVE_REPO
:
470 warning("%s", _(junk_leave_repo_msg
));
475 /* proceed to removal */
480 strbuf_addstr(&sb
, junk_git_dir
);
481 remove_dir_recursively(&sb
, 0);
484 if (junk_work_tree
) {
485 strbuf_addstr(&sb
, junk_work_tree
);
486 remove_dir_recursively(&sb
, 0);
491 static void remove_junk_on_signal(int signo
)
498 static struct ref
*find_remote_branch(const struct ref
*refs
, const char *branch
)
501 struct strbuf head
= STRBUF_INIT
;
502 strbuf_addstr(&head
, "refs/heads/");
503 strbuf_addstr(&head
, branch
);
504 ref
= find_ref_by_name(refs
, head
.buf
);
505 strbuf_release(&head
);
510 strbuf_addstr(&head
, "refs/tags/");
511 strbuf_addstr(&head
, branch
);
512 ref
= find_ref_by_name(refs
, head
.buf
);
513 strbuf_release(&head
);
518 static struct ref
*wanted_peer_refs(const struct ref
*refs
,
519 struct refspec
*refspec
)
521 struct ref
*head
= copy_ref(find_ref_by_name(refs
, "HEAD"));
522 struct ref
*local_refs
= head
;
523 struct ref
**tail
= head
? &head
->next
: &local_refs
;
525 if (option_single_branch
) {
526 struct ref
*remote_head
= NULL
;
529 remote_head
= guess_remote_head(head
, refs
, 0);
533 remote_head
= copy_ref(find_remote_branch(refs
, option_branch
));
536 if (!remote_head
&& option_branch
)
537 warning(_("Could not find remote branch %s to clone."),
540 get_fetch_map(remote_head
, refspec
, &tail
, 0);
542 /* if --branch=tag, pull the requested tag explicitly */
543 get_fetch_map(remote_head
, tag_refspec
, &tail
, 0);
546 get_fetch_map(refs
, refspec
, &tail
, 0);
548 if (!option_mirror
&& !option_single_branch
)
549 get_fetch_map(refs
, tag_refspec
, &tail
, 0);
554 static void write_remote_refs(const struct ref
*local_refs
)
558 struct ref_transaction
*t
;
559 struct strbuf err
= STRBUF_INIT
;
561 t
= ref_transaction_begin(&err
);
565 for (r
= local_refs
; r
; r
= r
->next
) {
568 if (ref_transaction_create(t
, r
->peer_ref
->name
, r
->old_oid
.hash
,
573 if (initial_ref_transaction_commit(t
, &err
))
576 strbuf_release(&err
);
577 ref_transaction_free(t
);
580 static void write_followtags(const struct ref
*refs
, const char *msg
)
582 const struct ref
*ref
;
583 for (ref
= refs
; ref
; ref
= ref
->next
) {
584 if (!starts_with(ref
->name
, "refs/tags/"))
586 if (ends_with(ref
->name
, "^{}"))
588 if (!has_object_file(&ref
->old_oid
))
590 update_ref(msg
, ref
->name
, ref
->old_oid
.hash
,
591 NULL
, 0, UPDATE_REFS_DIE_ON_ERR
);
595 static int iterate_ref_map(void *cb_data
, unsigned char sha1
[20])
597 struct ref
**rm
= cb_data
;
598 struct ref
*ref
= *rm
;
601 * Skip anything missing a peer_ref, which we are not
602 * actually going to write a ref for.
604 while (ref
&& !ref
->peer_ref
)
606 /* Returning -1 notes "end of list" to the caller. */
610 hashcpy(sha1
, ref
->old_oid
.hash
);
615 static void update_remote_refs(const struct ref
*refs
,
616 const struct ref
*mapped_refs
,
617 const struct ref
*remote_head_points_at
,
618 const char *branch_top
,
620 struct transport
*transport
,
621 int check_connectivity
)
623 const struct ref
*rm
= mapped_refs
;
625 if (check_connectivity
) {
626 struct check_connected_options opt
= CHECK_CONNECTED_INIT
;
628 opt
.transport
= transport
;
629 opt
.progress
= transport
->progress
;
631 if (check_connected(iterate_ref_map
, &rm
, &opt
))
632 die(_("remote did not send all necessary objects"));
636 write_remote_refs(mapped_refs
);
637 if (option_single_branch
)
638 write_followtags(refs
, msg
);
641 if (remote_head_points_at
&& !option_bare
) {
642 struct strbuf head_ref
= STRBUF_INIT
;
643 strbuf_addstr(&head_ref
, branch_top
);
644 strbuf_addstr(&head_ref
, "HEAD");
645 if (create_symref(head_ref
.buf
,
646 remote_head_points_at
->peer_ref
->name
,
648 die(_("unable to update %s"), head_ref
.buf
);
649 strbuf_release(&head_ref
);
653 static void update_head(const struct ref
*our
, const struct ref
*remote
,
657 if (our
&& skip_prefix(our
->name
, "refs/heads/", &head
)) {
658 /* Local default branch link */
659 if (create_symref("HEAD", our
->name
, NULL
) < 0)
660 die(_("unable to update HEAD"));
662 update_ref(msg
, "HEAD", our
->old_oid
.hash
, NULL
, 0,
663 UPDATE_REFS_DIE_ON_ERR
);
664 install_branch_config(0, head
, option_origin
, our
->name
);
667 struct commit
*c
= lookup_commit_reference(our
->old_oid
.hash
);
668 /* --branch specifies a non-branch (i.e. tags), detach HEAD */
669 update_ref(msg
, "HEAD", c
->object
.oid
.hash
,
670 NULL
, REF_NODEREF
, UPDATE_REFS_DIE_ON_ERR
);
673 * We know remote HEAD points to a non-branch, or
674 * HEAD points to a branch but we don't know which one.
675 * Detach HEAD in all these cases.
677 update_ref(msg
, "HEAD", remote
->old_oid
.hash
,
678 NULL
, REF_NODEREF
, UPDATE_REFS_DIE_ON_ERR
);
682 static int checkout(int submodule_progress
)
684 unsigned char sha1
[20];
686 struct lock_file
*lock_file
;
687 struct unpack_trees_options opts
;
692 if (option_no_checkout
)
695 head
= resolve_refdup("HEAD", RESOLVE_REF_READING
, sha1
, NULL
);
697 warning(_("remote HEAD refers to nonexistent ref, "
698 "unable to checkout.\n"));
701 if (!strcmp(head
, "HEAD")) {
702 if (advice_detached_head
)
703 detach_advice(sha1_to_hex(sha1
));
705 if (!starts_with(head
, "refs/heads/"))
706 die(_("HEAD not found below refs/heads!"));
710 /* We need to be in the new work tree for the checkout */
713 lock_file
= xcalloc(1, sizeof(struct lock_file
));
714 hold_locked_index(lock_file
, LOCK_DIE_ON_ERROR
);
716 memset(&opts
, 0, sizeof opts
);
719 opts
.fn
= oneway_merge
;
720 opts
.verbose_update
= (option_verbosity
>= 0);
721 opts
.src_index
= &the_index
;
722 opts
.dst_index
= &the_index
;
724 tree
= parse_tree_indirect(sha1
);
726 init_tree_desc(&t
, tree
->buffer
, tree
->size
);
727 if (unpack_trees(1, &t
, &opts
) < 0)
728 die(_("unable to checkout working tree"));
730 if (write_locked_index(&the_index
, lock_file
, COMMIT_LOCK
))
731 die(_("unable to write new index file"));
733 err
|= run_hook_le(NULL
, "post-checkout", sha1_to_hex(null_sha1
),
734 sha1_to_hex(sha1
), "1", NULL
);
736 if (!err
&& option_recursive
) {
737 struct argv_array args
= ARGV_ARRAY_INIT
;
738 argv_array_pushl(&args
, "submodule", "update", "--init", "--recursive", NULL
);
740 if (option_shallow_submodules
== 1)
741 argv_array_push(&args
, "--depth=1");
744 argv_array_pushf(&args
, "--jobs=%d", max_jobs
);
746 if (submodule_progress
)
747 argv_array_push(&args
, "--progress");
749 err
= run_command_v_opt(args
.argv
, RUN_GIT_CMD
);
750 argv_array_clear(&args
);
756 static int write_one_config(const char *key
, const char *value
, void *data
)
758 return git_config_set_multivar_gently(key
, value
? value
: "true", "^$", 0);
761 static void write_config(struct string_list
*config
)
765 for (i
= 0; i
< config
->nr
; i
++) {
766 if (git_config_parse_parameter(config
->items
[i
].string
,
767 write_one_config
, NULL
) < 0)
768 die(_("unable to write parameters to config file"));
772 static void write_refspec_config(const char *src_ref_prefix
,
773 const struct ref
*our_head_points_at
,
774 const struct ref
*remote_head_points_at
,
775 struct strbuf
*branch_top
)
777 struct strbuf key
= STRBUF_INIT
;
778 struct strbuf value
= STRBUF_INIT
;
780 if (option_mirror
|| !option_bare
) {
781 if (option_single_branch
&& !option_mirror
) {
783 if (starts_with(our_head_points_at
->name
, "refs/tags/"))
784 strbuf_addf(&value
, "+%s:%s", our_head_points_at
->name
,
785 our_head_points_at
->name
);
787 strbuf_addf(&value
, "+%s:%s%s", our_head_points_at
->name
,
788 branch_top
->buf
, option_branch
);
789 } else if (remote_head_points_at
) {
790 const char *head
= remote_head_points_at
->name
;
791 if (!skip_prefix(head
, "refs/heads/", &head
))
792 die("BUG: remote HEAD points at non-head?");
794 strbuf_addf(&value
, "+%s:%s%s", remote_head_points_at
->name
,
795 branch_top
->buf
, head
);
798 * otherwise, the next "git fetch" will
799 * simply fetch from HEAD without updating
800 * any remote-tracking branch, which is what
804 strbuf_addf(&value
, "+%s*:%s*", src_ref_prefix
, branch_top
->buf
);
806 /* Configure the remote */
808 strbuf_addf(&key
, "remote.%s.fetch", option_origin
);
809 git_config_set_multivar(key
.buf
, value
.buf
, "^$", 0);
813 strbuf_addf(&key
, "remote.%s.mirror", option_origin
);
814 git_config_set(key
.buf
, "true");
820 strbuf_release(&key
);
821 strbuf_release(&value
);
824 static void dissociate_from_references(void)
826 static const char* argv
[] = { "repack", "-a", "-d", NULL
};
827 char *alternates
= git_pathdup("objects/info/alternates");
829 if (!access(alternates
, F_OK
)) {
830 if (run_command_v_opt(argv
, RUN_GIT_CMD
|RUN_COMMAND_NO_STDIN
))
831 die(_("cannot repack to clean up"));
832 if (unlink(alternates
) && errno
!= ENOENT
)
833 die_errno(_("cannot unlink temporary alternates file"));
838 int cmd_clone(int argc
, const char **argv
, const char *prefix
)
840 int is_bundle
= 0, is_local
;
842 const char *repo_name
, *repo
, *work_tree
, *git_dir
;
845 const struct ref
*refs
, *remote_head
;
846 const struct ref
*remote_head_points_at
;
847 const struct ref
*our_head_points_at
;
848 struct ref
*mapped_refs
;
849 const struct ref
*ref
;
850 struct strbuf key
= STRBUF_INIT
, value
= STRBUF_INIT
;
851 struct strbuf branch_top
= STRBUF_INIT
, reflog_msg
= STRBUF_INIT
;
852 struct transport
*transport
= NULL
;
853 const char *src_ref_prefix
= "refs/heads/";
854 struct remote
*remote
;
855 int err
= 0, complete_refs_before_fetch
= 1;
856 int submodule_progress
;
858 struct refspec
*refspec
;
859 const char *fetch_pattern
;
861 packet_trace_identity("clone");
862 argc
= parse_options(argc
, argv
, prefix
, builtin_clone_options
,
863 builtin_clone_usage
, 0);
866 usage_msg_opt(_("Too many arguments."),
867 builtin_clone_usage
, builtin_clone_options
);
870 usage_msg_opt(_("You must specify a repository to clone."),
871 builtin_clone_usage
, builtin_clone_options
);
873 if (option_depth
|| option_since
|| option_not
.nr
)
875 if (option_single_branch
== -1)
876 option_single_branch
= deepen
? 1 : 0;
883 die(_("--bare and --origin %s options are incompatible."),
886 die(_("--bare and --separate-git-dir are incompatible."));
887 option_no_checkout
= 1;
891 option_origin
= "origin";
895 path
= get_repo_path(repo_name
, &is_bundle
);
897 repo
= xstrdup(absolute_path(repo_name
));
898 else if (!strchr(repo_name
, ':'))
899 die(_("repository '%s' does not exist"), repo_name
);
903 /* no need to be strict, transport_set_option() will validate it again */
904 if (option_depth
&& atoi(option_depth
) < 1)
905 die(_("depth %s is not a positive number"), option_depth
);
908 dir
= xstrdup(argv
[1]);
910 dir
= guess_dir_name(repo_name
, is_bundle
, option_bare
);
911 strip_trailing_slashes(dir
);
913 dest_exists
= !stat(dir
, &buf
);
914 if (dest_exists
&& !is_empty_dir(dir
))
915 die(_("destination path '%s' already exists and is not "
916 "an empty directory."), dir
);
918 strbuf_addf(&reflog_msg
, "clone: from %s", repo
);
923 work_tree
= getenv("GIT_WORK_TREE");
924 if (work_tree
&& !stat(work_tree
, &buf
))
925 die(_("working tree '%s' already exists."), work_tree
);
928 if (option_bare
|| work_tree
)
929 git_dir
= xstrdup(dir
);
932 git_dir
= mkpathdup("%s/.git", dir
);
936 sigchain_push_common(remove_junk_on_signal
);
939 if (safe_create_leading_directories_const(work_tree
) < 0)
940 die_errno(_("could not create leading directories of '%s'"),
942 if (!dest_exists
&& mkdir(work_tree
, 0777))
943 die_errno(_("could not create work tree dir '%s'"),
945 junk_work_tree
= work_tree
;
946 set_git_work_tree(work_tree
);
949 junk_git_dir
= real_git_dir
? real_git_dir
: git_dir
;
950 if (safe_create_leading_directories_const(git_dir
) < 0)
951 die(_("could not create leading directories of '%s'"), git_dir
);
953 if (0 <= option_verbosity
) {
955 fprintf(stderr
, _("Cloning into bare repository '%s'...\n"), dir
);
957 fprintf(stderr
, _("Cloning into '%s'...\n"), dir
);
960 if (option_recursive
) {
961 if (option_required_reference
.nr
&&
962 option_optional_reference
.nr
)
963 die(_("clone --recursive is not compatible with "
964 "both --reference and --reference-if-able"));
965 else if (option_required_reference
.nr
) {
966 string_list_append(&option_config
,
967 "submodule.alternateLocation=superproject");
968 string_list_append(&option_config
,
969 "submodule.alternateErrorStrategy=die");
970 } else if (option_optional_reference
.nr
) {
971 string_list_append(&option_config
,
972 "submodule.alternateLocation=superproject");
973 string_list_append(&option_config
,
974 "submodule.alternateErrorStrategy=info");
978 init_db(git_dir
, real_git_dir
, option_template
, INIT_DB_QUIET
);
981 git_dir
= real_git_dir
;
983 write_config(&option_config
);
985 git_config(git_default_config
, NULL
);
989 src_ref_prefix
= "refs/";
990 strbuf_addstr(&branch_top
, src_ref_prefix
);
992 git_config_set("core.bare", "true");
994 strbuf_addf(&branch_top
, "refs/remotes/%s/", option_origin
);
997 strbuf_addf(&value
, "+%s*:%s*", src_ref_prefix
, branch_top
.buf
);
998 strbuf_addf(&key
, "remote.%s.url", option_origin
);
999 git_config_set(key
.buf
, repo
);
1002 if (option_required_reference
.nr
|| option_optional_reference
.nr
)
1005 fetch_pattern
= value
.buf
;
1006 refspec
= parse_fetch_refspec(1, &fetch_pattern
);
1008 strbuf_reset(&value
);
1010 remote
= remote_get(option_origin
);
1011 transport
= transport_get(remote
, remote
->url
[0]);
1012 transport_set_verbosity(transport
, option_verbosity
, option_progress
);
1013 transport
->family
= family
;
1015 path
= get_repo_path(remote
->url
[0], &is_bundle
);
1016 is_local
= option_local
!= 0 && path
&& !is_bundle
;
1019 warning(_("--depth is ignored in local clones; use file:// instead."));
1021 warning(_("--shallow-since is ignored in local clones; use file:// instead."));
1023 warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
1024 if (!access(mkpath("%s/shallow", path
), F_OK
)) {
1025 if (option_local
> 0)
1026 warning(_("source repository is shallow, ignoring --local"));
1030 if (option_local
> 0 && !is_local
)
1031 warning(_("--local is ignored"));
1032 transport
->cloning
= 1;
1034 if (!transport
->get_refs_list
|| (!is_local
&& !transport
->fetch
))
1035 die(_("Don't know how to clone %s"), transport
->url
);
1037 transport_set_option(transport
, TRANS_OPT_KEEP
, "yes");
1040 transport_set_option(transport
, TRANS_OPT_DEPTH
,
1043 transport_set_option(transport
, TRANS_OPT_DEEPEN_SINCE
,
1046 transport_set_option(transport
, TRANS_OPT_DEEPEN_NOT
,
1047 (const char *)&option_not
);
1048 if (option_single_branch
)
1049 transport_set_option(transport
, TRANS_OPT_FOLLOWTAGS
, "1");
1051 if (option_upload_pack
)
1052 transport_set_option(transport
, TRANS_OPT_UPLOADPACK
,
1053 option_upload_pack
);
1055 if (transport
->smart_options
&& !deepen
)
1056 transport
->smart_options
->check_self_contained_and_connected
= 1;
1058 refs
= transport_get_remote_refs(transport
);
1061 mapped_refs
= wanted_peer_refs(refs
, refspec
);
1063 * transport_get_remote_refs() may return refs with null sha-1
1064 * in mapped_refs (see struct transport->get_refs_list
1065 * comment). In that case we need fetch it early because
1066 * remote_head code below relies on it.
1068 * for normal clones, transport_get_remote_refs() should
1069 * return reliable ref set, we can delay cloning until after
1070 * remote HEAD check.
1072 for (ref
= refs
; ref
; ref
= ref
->next
)
1073 if (is_null_oid(&ref
->old_oid
)) {
1074 complete_refs_before_fetch
= 0;
1078 if (!is_local
&& !complete_refs_before_fetch
)
1079 transport_fetch_refs(transport
, mapped_refs
);
1081 remote_head
= find_ref_by_name(refs
, "HEAD");
1082 remote_head_points_at
=
1083 guess_remote_head(remote_head
, mapped_refs
, 0);
1085 if (option_branch
) {
1086 our_head_points_at
=
1087 find_remote_branch(mapped_refs
, option_branch
);
1089 if (!our_head_points_at
)
1090 die(_("Remote branch %s not found in upstream %s"),
1091 option_branch
, option_origin
);
1094 our_head_points_at
= remote_head_points_at
;
1098 die(_("Remote branch %s not found in upstream %s"),
1099 option_branch
, option_origin
);
1101 warning(_("You appear to have cloned an empty repository."));
1103 our_head_points_at
= NULL
;
1104 remote_head_points_at
= NULL
;
1106 option_no_checkout
= 1;
1108 install_branch_config(0, "master", option_origin
,
1109 "refs/heads/master");
1112 write_refspec_config(src_ref_prefix
, our_head_points_at
,
1113 remote_head_points_at
, &branch_top
);
1116 clone_local(path
, git_dir
);
1117 else if (refs
&& complete_refs_before_fetch
)
1118 transport_fetch_refs(transport
, mapped_refs
);
1120 update_remote_refs(refs
, mapped_refs
, remote_head_points_at
,
1121 branch_top
.buf
, reflog_msg
.buf
, transport
, !is_local
);
1123 update_head(our_head_points_at
, remote_head
, reflog_msg
.buf
);
1126 * We want to show progress for recursive submodule clones iff
1127 * we did so for the main clone. But only the transport knows
1128 * the final decision for this flag, so we need to rescue the value
1129 * before we free the transport.
1131 submodule_progress
= transport
->progress
;
1133 transport_unlock_pack(transport
);
1134 transport_disconnect(transport
);
1136 if (option_dissociate
) {
1138 dissociate_from_references();
1141 junk_mode
= JUNK_LEAVE_REPO
;
1142 err
= checkout(submodule_progress
);
1144 strbuf_release(&reflog_msg
);
1145 strbuf_release(&branch_top
);
1146 strbuf_release(&key
);
1147 strbuf_release(&value
);
1148 junk_mode
= JUNK_LEAVE_ALL
;