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 by 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 normalize_path_copy(abs_path
, abs_path
);
355 add_to_alternates_file(abs_path
);
358 strbuf_release(&line
);
362 static void copy_or_link_directory(struct strbuf
*src
, struct strbuf
*dest
,
363 const char *src_repo
, int src_baselen
)
367 int src_len
, dest_len
;
370 dir
= opendir(src
->buf
);
372 die_errno(_("failed to open '%s'"), src
->buf
);
374 if (mkdir(dest
->buf
, 0777)) {
376 die_errno(_("failed to create directory '%s'"), dest
->buf
);
377 else if (stat(dest
->buf
, &buf
))
378 die_errno(_("failed to stat '%s'"), dest
->buf
);
379 else if (!S_ISDIR(buf
.st_mode
))
380 die(_("%s exists and is not a directory"), dest
->buf
);
383 strbuf_addch(src
, '/');
385 strbuf_addch(dest
, '/');
386 dest_len
= dest
->len
;
388 while ((de
= readdir(dir
)) != NULL
) {
389 strbuf_setlen(src
, src_len
);
390 strbuf_addstr(src
, de
->d_name
);
391 strbuf_setlen(dest
, dest_len
);
392 strbuf_addstr(dest
, de
->d_name
);
393 if (stat(src
->buf
, &buf
)) {
394 warning (_("failed to stat %s\n"), src
->buf
);
397 if (S_ISDIR(buf
.st_mode
)) {
398 if (de
->d_name
[0] != '.')
399 copy_or_link_directory(src
, dest
,
400 src_repo
, src_baselen
);
404 /* Files that cannot be copied bit-for-bit... */
405 if (!strcmp(src
->buf
+ src_baselen
, "/info/alternates")) {
406 copy_alternates(src
, dest
, src_repo
);
410 if (unlink(dest
->buf
) && errno
!= ENOENT
)
411 die_errno(_("failed to unlink '%s'"), dest
->buf
);
412 if (!option_no_hardlinks
) {
413 if (!link(src
->buf
, dest
->buf
))
415 if (option_local
> 0)
416 die_errno(_("failed to create link '%s'"), dest
->buf
);
417 option_no_hardlinks
= 1;
419 if (copy_file_with_time(dest
->buf
, src
->buf
, 0666))
420 die_errno(_("failed to copy file to '%s'"), dest
->buf
);
425 static void clone_local(const char *src_repo
, const char *dest_repo
)
428 struct strbuf alt
= STRBUF_INIT
;
429 strbuf_addf(&alt
, "%s/objects", src_repo
);
430 add_to_alternates_file(alt
.buf
);
431 strbuf_release(&alt
);
433 struct strbuf src
= STRBUF_INIT
;
434 struct strbuf dest
= STRBUF_INIT
;
435 get_common_dir(&src
, src_repo
);
436 get_common_dir(&dest
, dest_repo
);
437 strbuf_addstr(&src
, "/objects");
438 strbuf_addstr(&dest
, "/objects");
439 copy_or_link_directory(&src
, &dest
, src_repo
, src
.len
);
440 strbuf_release(&src
);
441 strbuf_release(&dest
);
444 if (0 <= option_verbosity
)
445 fprintf(stderr
, _("done.\n"));
448 static const char *junk_work_tree
;
449 static const char *junk_git_dir
;
454 } junk_mode
= JUNK_LEAVE_NONE
;
456 static const char junk_leave_repo_msg
[] =
457 N_("Clone succeeded, but checkout failed.\n"
458 "You can inspect what was checked out with 'git status'\n"
459 "and retry the checkout with 'git checkout -f HEAD'\n");
461 static void remove_junk(void)
463 struct strbuf sb
= STRBUF_INIT
;
466 case JUNK_LEAVE_REPO
:
467 warning("%s", _(junk_leave_repo_msg
));
472 /* proceed to removal */
477 strbuf_addstr(&sb
, junk_git_dir
);
478 remove_dir_recursively(&sb
, 0);
481 if (junk_work_tree
) {
482 strbuf_addstr(&sb
, junk_work_tree
);
483 remove_dir_recursively(&sb
, 0);
488 static void remove_junk_on_signal(int signo
)
495 static struct ref
*find_remote_branch(const struct ref
*refs
, const char *branch
)
498 struct strbuf head
= STRBUF_INIT
;
499 strbuf_addstr(&head
, "refs/heads/");
500 strbuf_addstr(&head
, branch
);
501 ref
= find_ref_by_name(refs
, head
.buf
);
502 strbuf_release(&head
);
507 strbuf_addstr(&head
, "refs/tags/");
508 strbuf_addstr(&head
, branch
);
509 ref
= find_ref_by_name(refs
, head
.buf
);
510 strbuf_release(&head
);
515 static struct ref
*wanted_peer_refs(const struct ref
*refs
,
516 struct refspec
*refspec
)
518 struct ref
*head
= copy_ref(find_ref_by_name(refs
, "HEAD"));
519 struct ref
*local_refs
= head
;
520 struct ref
**tail
= head
? &head
->next
: &local_refs
;
522 if (option_single_branch
) {
523 struct ref
*remote_head
= NULL
;
526 remote_head
= guess_remote_head(head
, refs
, 0);
530 remote_head
= copy_ref(find_remote_branch(refs
, option_branch
));
533 if (!remote_head
&& option_branch
)
534 warning(_("Could not find remote branch %s to clone."),
537 get_fetch_map(remote_head
, refspec
, &tail
, 0);
539 /* if --branch=tag, pull the requested tag explicitly */
540 get_fetch_map(remote_head
, tag_refspec
, &tail
, 0);
543 get_fetch_map(refs
, refspec
, &tail
, 0);
545 if (!option_mirror
&& !option_single_branch
)
546 get_fetch_map(refs
, tag_refspec
, &tail
, 0);
551 static void write_remote_refs(const struct ref
*local_refs
)
555 struct ref_transaction
*t
;
556 struct strbuf err
= STRBUF_INIT
;
558 t
= ref_transaction_begin(&err
);
562 for (r
= local_refs
; r
; r
= r
->next
) {
565 if (ref_transaction_create(t
, r
->peer_ref
->name
, r
->old_oid
.hash
,
570 if (initial_ref_transaction_commit(t
, &err
))
573 strbuf_release(&err
);
574 ref_transaction_free(t
);
577 static void write_followtags(const struct ref
*refs
, const char *msg
)
579 const struct ref
*ref
;
580 for (ref
= refs
; ref
; ref
= ref
->next
) {
581 if (!starts_with(ref
->name
, "refs/tags/"))
583 if (ends_with(ref
->name
, "^{}"))
585 if (!has_object_file(&ref
->old_oid
))
587 update_ref(msg
, ref
->name
, ref
->old_oid
.hash
,
588 NULL
, 0, UPDATE_REFS_DIE_ON_ERR
);
592 static int iterate_ref_map(void *cb_data
, unsigned char sha1
[20])
594 struct ref
**rm
= cb_data
;
595 struct ref
*ref
= *rm
;
598 * Skip anything missing a peer_ref, which we are not
599 * actually going to write a ref for.
601 while (ref
&& !ref
->peer_ref
)
603 /* Returning -1 notes "end of list" to the caller. */
607 hashcpy(sha1
, ref
->old_oid
.hash
);
612 static void update_remote_refs(const struct ref
*refs
,
613 const struct ref
*mapped_refs
,
614 const struct ref
*remote_head_points_at
,
615 const char *branch_top
,
617 struct transport
*transport
,
618 int check_connectivity
)
620 const struct ref
*rm
= mapped_refs
;
622 if (check_connectivity
) {
623 struct check_connected_options opt
= CHECK_CONNECTED_INIT
;
625 opt
.transport
= transport
;
626 opt
.progress
= transport
->progress
;
628 if (check_connected(iterate_ref_map
, &rm
, &opt
))
629 die(_("remote did not send all necessary objects"));
633 write_remote_refs(mapped_refs
);
634 if (option_single_branch
)
635 write_followtags(refs
, msg
);
638 if (remote_head_points_at
&& !option_bare
) {
639 struct strbuf head_ref
= STRBUF_INIT
;
640 strbuf_addstr(&head_ref
, branch_top
);
641 strbuf_addstr(&head_ref
, "HEAD");
642 if (create_symref(head_ref
.buf
,
643 remote_head_points_at
->peer_ref
->name
,
645 die(_("unable to update %s"), head_ref
.buf
);
646 strbuf_release(&head_ref
);
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 if (create_symref("HEAD", our
->name
, NULL
) < 0)
657 die(_("unable to update HEAD"));
659 update_ref(msg
, "HEAD", our
->old_oid
.hash
, NULL
, 0,
660 UPDATE_REFS_DIE_ON_ERR
);
661 install_branch_config(0, head
, option_origin
, our
->name
);
664 struct commit
*c
= lookup_commit_reference(our
->old_oid
.hash
);
665 /* --branch specifies a non-branch (i.e. tags), detach HEAD */
666 update_ref(msg
, "HEAD", c
->object
.oid
.hash
,
667 NULL
, REF_NODEREF
, UPDATE_REFS_DIE_ON_ERR
);
670 * We know remote HEAD points to a non-branch, or
671 * HEAD points to a branch but we don't know which one.
672 * Detach HEAD in all these cases.
674 update_ref(msg
, "HEAD", remote
->old_oid
.hash
,
675 NULL
, REF_NODEREF
, UPDATE_REFS_DIE_ON_ERR
);
679 static int checkout(int submodule_progress
)
681 unsigned char sha1
[20];
683 struct lock_file
*lock_file
;
684 struct unpack_trees_options opts
;
689 if (option_no_checkout
)
692 head
= resolve_refdup("HEAD", RESOLVE_REF_READING
, sha1
, NULL
);
694 warning(_("remote HEAD refers to nonexistent ref, "
695 "unable to checkout.\n"));
698 if (!strcmp(head
, "HEAD")) {
699 if (advice_detached_head
)
700 detach_advice(sha1_to_hex(sha1
));
702 if (!starts_with(head
, "refs/heads/"))
703 die(_("HEAD not found below refs/heads!"));
707 /* We need to be in the new work tree for the checkout */
710 lock_file
= xcalloc(1, sizeof(struct lock_file
));
711 hold_locked_index(lock_file
, 1);
713 memset(&opts
, 0, sizeof opts
);
716 opts
.fn
= oneway_merge
;
717 opts
.verbose_update
= (option_verbosity
>= 0);
718 opts
.src_index
= &the_index
;
719 opts
.dst_index
= &the_index
;
721 tree
= parse_tree_indirect(sha1
);
723 init_tree_desc(&t
, tree
->buffer
, tree
->size
);
724 if (unpack_trees(1, &t
, &opts
) < 0)
725 die(_("unable to checkout working tree"));
727 if (write_locked_index(&the_index
, lock_file
, COMMIT_LOCK
))
728 die(_("unable to write new index file"));
730 err
|= run_hook_le(NULL
, "post-checkout", sha1_to_hex(null_sha1
),
731 sha1_to_hex(sha1
), "1", NULL
);
733 if (!err
&& option_recursive
) {
734 struct argv_array args
= ARGV_ARRAY_INIT
;
735 argv_array_pushl(&args
, "submodule", "update", "--init", "--recursive", NULL
);
737 if (option_shallow_submodules
== 1)
738 argv_array_push(&args
, "--depth=1");
741 argv_array_pushf(&args
, "--jobs=%d", max_jobs
);
743 if (submodule_progress
)
744 argv_array_push(&args
, "--progress");
746 err
= run_command_v_opt(args
.argv
, RUN_GIT_CMD
);
747 argv_array_clear(&args
);
753 static int write_one_config(const char *key
, const char *value
, void *data
)
755 return git_config_set_multivar_gently(key
, value
? value
: "true", "^$", 0);
758 static void write_config(struct string_list
*config
)
762 for (i
= 0; i
< config
->nr
; i
++) {
763 if (git_config_parse_parameter(config
->items
[i
].string
,
764 write_one_config
, NULL
) < 0)
765 die(_("unable to write parameters to config file"));
769 static void write_refspec_config(const char *src_ref_prefix
,
770 const struct ref
*our_head_points_at
,
771 const struct ref
*remote_head_points_at
,
772 struct strbuf
*branch_top
)
774 struct strbuf key
= STRBUF_INIT
;
775 struct strbuf value
= STRBUF_INIT
;
777 if (option_mirror
|| !option_bare
) {
778 if (option_single_branch
&& !option_mirror
) {
780 if (starts_with(our_head_points_at
->name
, "refs/tags/"))
781 strbuf_addf(&value
, "+%s:%s", our_head_points_at
->name
,
782 our_head_points_at
->name
);
784 strbuf_addf(&value
, "+%s:%s%s", our_head_points_at
->name
,
785 branch_top
->buf
, option_branch
);
786 } else if (remote_head_points_at
) {
787 const char *head
= remote_head_points_at
->name
;
788 if (!skip_prefix(head
, "refs/heads/", &head
))
789 die("BUG: remote HEAD points at non-head?");
791 strbuf_addf(&value
, "+%s:%s%s", remote_head_points_at
->name
,
792 branch_top
->buf
, head
);
795 * otherwise, the next "git fetch" will
796 * simply fetch from HEAD without updating
797 * any remote-tracking branch, which is what
801 strbuf_addf(&value
, "+%s*:%s*", src_ref_prefix
, branch_top
->buf
);
803 /* Configure the remote */
805 strbuf_addf(&key
, "remote.%s.fetch", option_origin
);
806 git_config_set_multivar(key
.buf
, value
.buf
, "^$", 0);
810 strbuf_addf(&key
, "remote.%s.mirror", option_origin
);
811 git_config_set(key
.buf
, "true");
817 strbuf_release(&key
);
818 strbuf_release(&value
);
821 static void dissociate_from_references(void)
823 static const char* argv
[] = { "repack", "-a", "-d", NULL
};
824 char *alternates
= git_pathdup("objects/info/alternates");
826 if (!access(alternates
, F_OK
)) {
827 if (run_command_v_opt(argv
, RUN_GIT_CMD
|RUN_COMMAND_NO_STDIN
))
828 die(_("cannot repack to clean up"));
829 if (unlink(alternates
) && errno
!= ENOENT
)
830 die_errno(_("cannot unlink temporary alternates file"));
835 int cmd_clone(int argc
, const char **argv
, const char *prefix
)
837 int is_bundle
= 0, is_local
;
839 const char *repo_name
, *repo
, *work_tree
, *git_dir
;
842 const struct ref
*refs
, *remote_head
;
843 const struct ref
*remote_head_points_at
;
844 const struct ref
*our_head_points_at
;
845 struct ref
*mapped_refs
;
846 const struct ref
*ref
;
847 struct strbuf key
= STRBUF_INIT
, value
= STRBUF_INIT
;
848 struct strbuf branch_top
= STRBUF_INIT
, reflog_msg
= STRBUF_INIT
;
849 struct transport
*transport
= NULL
;
850 const char *src_ref_prefix
= "refs/heads/";
851 struct remote
*remote
;
852 int err
= 0, complete_refs_before_fetch
= 1;
853 int submodule_progress
;
855 struct refspec
*refspec
;
856 const char *fetch_pattern
;
858 packet_trace_identity("clone");
859 argc
= parse_options(argc
, argv
, prefix
, builtin_clone_options
,
860 builtin_clone_usage
, 0);
863 usage_msg_opt(_("Too many arguments."),
864 builtin_clone_usage
, builtin_clone_options
);
867 usage_msg_opt(_("You must specify a repository to clone."),
868 builtin_clone_usage
, builtin_clone_options
);
870 if (option_depth
|| option_since
|| option_not
.nr
)
872 if (option_single_branch
== -1)
873 option_single_branch
= deepen
? 1 : 0;
880 die(_("--bare and --origin %s options are incompatible."),
883 die(_("--bare and --separate-git-dir are incompatible."));
884 option_no_checkout
= 1;
888 option_origin
= "origin";
892 path
= get_repo_path(repo_name
, &is_bundle
);
894 repo
= xstrdup(absolute_path(repo_name
));
895 else if (!strchr(repo_name
, ':'))
896 die(_("repository '%s' does not exist"), repo_name
);
900 /* no need to be strict, transport_set_option() will validate it again */
901 if (option_depth
&& atoi(option_depth
) < 1)
902 die(_("depth %s is not a positive number"), option_depth
);
905 dir
= xstrdup(argv
[1]);
907 dir
= guess_dir_name(repo_name
, is_bundle
, option_bare
);
908 strip_trailing_slashes(dir
);
910 dest_exists
= !stat(dir
, &buf
);
911 if (dest_exists
&& !is_empty_dir(dir
))
912 die(_("destination path '%s' already exists and is not "
913 "an empty directory."), dir
);
915 strbuf_addf(&reflog_msg
, "clone: from %s", repo
);
920 work_tree
= getenv("GIT_WORK_TREE");
921 if (work_tree
&& !stat(work_tree
, &buf
))
922 die(_("working tree '%s' already exists."), work_tree
);
925 if (option_bare
|| work_tree
)
926 git_dir
= xstrdup(dir
);
929 git_dir
= mkpathdup("%s/.git", dir
);
933 sigchain_push_common(remove_junk_on_signal
);
936 if (safe_create_leading_directories_const(work_tree
) < 0)
937 die_errno(_("could not create leading directories of '%s'"),
939 if (!dest_exists
&& mkdir(work_tree
, 0777))
940 die_errno(_("could not create work tree dir '%s'"),
942 junk_work_tree
= work_tree
;
943 set_git_work_tree(work_tree
);
946 junk_git_dir
= real_git_dir
? real_git_dir
: git_dir
;
947 if (safe_create_leading_directories_const(git_dir
) < 0)
948 die(_("could not create leading directories of '%s'"), git_dir
);
950 if (0 <= option_verbosity
) {
952 fprintf(stderr
, _("Cloning into bare repository '%s'...\n"), dir
);
954 fprintf(stderr
, _("Cloning into '%s'...\n"), dir
);
957 if (option_recursive
) {
958 if (option_required_reference
.nr
&&
959 option_optional_reference
.nr
)
960 die(_("clone --recursive is not compatible with "
961 "both --reference and --reference-if-able"));
962 else if (option_required_reference
.nr
) {
963 string_list_append(&option_config
,
964 "submodule.alternateLocation=superproject");
965 string_list_append(&option_config
,
966 "submodule.alternateErrorStrategy=die");
967 } else if (option_optional_reference
.nr
) {
968 string_list_append(&option_config
,
969 "submodule.alternateLocation=superproject");
970 string_list_append(&option_config
,
971 "submodule.alternateErrorStrategy=info");
975 init_db(git_dir
, real_git_dir
, option_template
, INIT_DB_QUIET
);
978 git_dir
= real_git_dir
;
980 write_config(&option_config
);
982 git_config(git_default_config
, NULL
);
986 src_ref_prefix
= "refs/";
987 strbuf_addstr(&branch_top
, src_ref_prefix
);
989 git_config_set("core.bare", "true");
991 strbuf_addf(&branch_top
, "refs/remotes/%s/", option_origin
);
994 strbuf_addf(&value
, "+%s*:%s*", src_ref_prefix
, branch_top
.buf
);
995 strbuf_addf(&key
, "remote.%s.url", option_origin
);
996 git_config_set(key
.buf
, repo
);
999 if (option_required_reference
.nr
|| option_optional_reference
.nr
)
1002 fetch_pattern
= value
.buf
;
1003 refspec
= parse_fetch_refspec(1, &fetch_pattern
);
1005 strbuf_reset(&value
);
1007 remote
= remote_get(option_origin
);
1008 transport
= transport_get(remote
, remote
->url
[0]);
1009 transport_set_verbosity(transport
, option_verbosity
, option_progress
);
1010 transport
->family
= family
;
1012 path
= get_repo_path(remote
->url
[0], &is_bundle
);
1013 is_local
= option_local
!= 0 && path
&& !is_bundle
;
1016 warning(_("--depth is ignored in local clones; use file:// instead."));
1018 warning(_("--shallow-since is ignored in local clones; use file:// instead."));
1020 warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
1021 if (!access(mkpath("%s/shallow", path
), F_OK
)) {
1022 if (option_local
> 0)
1023 warning(_("source repository is shallow, ignoring --local"));
1027 if (option_local
> 0 && !is_local
)
1028 warning(_("--local is ignored"));
1029 transport
->cloning
= 1;
1031 if (!transport
->get_refs_list
|| (!is_local
&& !transport
->fetch
))
1032 die(_("Don't know how to clone %s"), transport
->url
);
1034 transport_set_option(transport
, TRANS_OPT_KEEP
, "yes");
1037 transport_set_option(transport
, TRANS_OPT_DEPTH
,
1040 transport_set_option(transport
, TRANS_OPT_DEEPEN_SINCE
,
1043 transport_set_option(transport
, TRANS_OPT_DEEPEN_NOT
,
1044 (const char *)&option_not
);
1045 if (option_single_branch
)
1046 transport_set_option(transport
, TRANS_OPT_FOLLOWTAGS
, "1");
1048 if (option_upload_pack
)
1049 transport_set_option(transport
, TRANS_OPT_UPLOADPACK
,
1050 option_upload_pack
);
1052 if (transport
->smart_options
&& !deepen
)
1053 transport
->smart_options
->check_self_contained_and_connected
= 1;
1055 refs
= transport_get_remote_refs(transport
);
1058 mapped_refs
= wanted_peer_refs(refs
, refspec
);
1060 * transport_get_remote_refs() may return refs with null sha-1
1061 * in mapped_refs (see struct transport->get_refs_list
1062 * comment). In that case we need fetch it early because
1063 * remote_head code below relies on it.
1065 * for normal clones, transport_get_remote_refs() should
1066 * return reliable ref set, we can delay cloning until after
1067 * remote HEAD check.
1069 for (ref
= refs
; ref
; ref
= ref
->next
)
1070 if (is_null_oid(&ref
->old_oid
)) {
1071 complete_refs_before_fetch
= 0;
1075 if (!is_local
&& !complete_refs_before_fetch
)
1076 transport_fetch_refs(transport
, mapped_refs
);
1078 remote_head
= find_ref_by_name(refs
, "HEAD");
1079 remote_head_points_at
=
1080 guess_remote_head(remote_head
, mapped_refs
, 0);
1082 if (option_branch
) {
1083 our_head_points_at
=
1084 find_remote_branch(mapped_refs
, option_branch
);
1086 if (!our_head_points_at
)
1087 die(_("Remote branch %s not found in upstream %s"),
1088 option_branch
, option_origin
);
1091 our_head_points_at
= remote_head_points_at
;
1095 die(_("Remote branch %s not found in upstream %s"),
1096 option_branch
, option_origin
);
1098 warning(_("You appear to have cloned an empty repository."));
1100 our_head_points_at
= NULL
;
1101 remote_head_points_at
= NULL
;
1103 option_no_checkout
= 1;
1105 install_branch_config(0, "master", option_origin
,
1106 "refs/heads/master");
1109 write_refspec_config(src_ref_prefix
, our_head_points_at
,
1110 remote_head_points_at
, &branch_top
);
1113 clone_local(path
, git_dir
);
1114 else if (refs
&& complete_refs_before_fetch
)
1115 transport_fetch_refs(transport
, mapped_refs
);
1117 update_remote_refs(refs
, mapped_refs
, remote_head_points_at
,
1118 branch_top
.buf
, reflog_msg
.buf
, transport
, !is_local
);
1120 update_head(our_head_points_at
, remote_head
, reflog_msg
.buf
);
1123 * We want to show progress for recursive submodule clones iff
1124 * we did so for the main clone. But only the transport knows
1125 * the final decision for this flag, so we need to rescue the value
1126 * before we free the transport.
1128 submodule_progress
= transport
->progress
;
1130 transport_unlock_pack(transport
);
1131 transport_disconnect(transport
);
1133 if (option_dissociate
) {
1135 dissociate_from_references();
1138 junk_mode
= JUNK_LEAVE_REPO
;
1139 err
= checkout(submodule_progress
);
1141 strbuf_release(&reflog_msg
);
1142 strbuf_release(&branch_top
);
1143 strbuf_release(&key
);
1144 strbuf_release(&value
);
1145 junk_mode
= JUNK_LEAVE_ALL
;