clone: drop dest parameter from copy_alternates()
[git/git.git] / builtin / clone.c
CommitLineData
8434c2f1
DB
1/*
2 * Builtin "git clone"
3 *
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
7 *
8 * Clone a repository into a different directory that does not yet exist.
9 */
10
f8adbec9 11#define USE_THE_INDEX_COMPATIBILITY_MACROS
c2e86add 12#include "builtin.h"
b2141fc1 13#include "config.h"
697cc8ef 14#include "lockfile.h"
8434c2f1
DB
15#include "parse-options.h"
16#include "fetch-pack.h"
17#include "refs.h"
ec0cb496 18#include "refspec.h"
cbd53a21 19#include "object-store.h"
8434c2f1
DB
20#include "tree.h"
21#include "tree-walk.h"
22#include "unpack-trees.h"
23#include "transport.h"
24#include "strbuf.h"
25#include "dir.h"
4a16d072 26#include "sigchain.h"
a9f2c136 27#include "branch.h"
8ef51733 28#include "remote.h"
dfa7a6c5 29#include "run-command.h"
0433ad12 30#include "connected.h"
3836d88a 31#include "packfile.h"
548719fb 32#include "list-objects-filter-options.h"
0d4a1321 33#include "object-store.h"
8434c2f1
DB
34
35/*
36 * Overall FIXMEs:
37 * - respect DB_ENVIRONMENT for .git/objects.
38 *
39 * Implementation notes:
40 * - dropping use-separate-remote and no-separate-remote compatibility
41 *
42 */
43static const char * const builtin_clone_usage[] = {
9c9b4f2f 44 N_("git clone [<options>] [--] <repo> [<dir>]"),
8434c2f1
DB
45 NULL
46};
47
3e6e0edd 48static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
bb62e0a9 49static int option_local = -1, option_no_hardlinks, option_shared;
0dab2468 50static int option_no_tags;
18a74a09 51static int option_shallow_submodules;
994c2aaf
NTND
52static int deepen;
53static char *option_template, *option_depth, *option_since;
8434c2f1 54static char *option_origin = NULL;
7a4ee28f 55static char *option_branch = NULL;
859e5df9 56static struct string_list option_not = STRING_LIST_INIT_NODUP;
b57fb80a 57static const char *real_git_dir;
8434c2f1 58static char *option_upload_pack = "git-upload-pack";
5bd631b3 59static int option_verbosity;
01fdc21f 60static int option_progress = -1;
c915f11e 61static enum transport_family family;
2721ce21 62static struct string_list option_config = STRING_LIST_INIT_NODUP;
5e40800d 63static struct string_list option_required_reference = STRING_LIST_INIT_NODUP;
f7415b4d 64static struct string_list option_optional_reference = STRING_LIST_INIT_NODUP;
fb1d6dab 65static int option_dissociate;
72290d6a 66static int max_jobs = -1;
bb62e0a9 67static struct string_list option_recurse_submodules = STRING_LIST_INIT_NODUP;
548719fb 68static struct list_objects_filter_options filter_options;
6e983059 69static struct string_list server_options = STRING_LIST_INIT_NODUP;
bb62e0a9
BW
70
71static int recurse_submodules_cb(const struct option *opt,
72 const char *arg, int unset)
73{
74 if (unset)
75 string_list_clear((struct string_list *)opt->value, 0);
76 else if (arg)
77 string_list_append((struct string_list *)opt->value, arg);
78 else
79 string_list_append((struct string_list *)opt->value,
80 (const char *)opt->defval);
81
82 return 0;
83}
dbc92b07 84
8434c2f1 85static struct option builtin_clone_options[] = {
5bd631b3 86 OPT__VERBOSITY(&option_verbosity),
01fdc21f 87 OPT_BOOL(0, "progress", &option_progress,
32b77add 88 N_("force progress reporting")),
d5d09d47
SB
89 OPT_BOOL('n', "no-checkout", &option_no_checkout,
90 N_("don't create a checkout")),
4741edd5
SB
91 OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")),
92 OPT_HIDDEN_BOOL(0, "naked", &option_bare,
93 N_("create a bare repository")),
d5d09d47
SB
94 OPT_BOOL(0, "mirror", &option_mirror,
95 N_("create a mirror repository (implies bare)")),
189260b1 96 OPT_BOOL('l', "local", &option_local,
32b77add 97 N_("to clone from a local repository")),
d5d09d47 98 OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks,
32b77add 99 N_("don't use local hardlinks, always copy")),
d5d09d47 100 OPT_BOOL('s', "shared", &option_shared,
32b77add 101 N_("setup as shared repository")),
bb62e0a9
BW
102 { OPTION_CALLBACK, 0, "recursive", &option_recurse_submodules,
103 N_("pathspec"), N_("initialize submodules in the clone"),
104 PARSE_OPT_OPTARG | PARSE_OPT_HIDDEN, recurse_submodules_cb,
105 (intptr_t)"." },
106 { OPTION_CALLBACK, 0, "recurse-submodules", &option_recurse_submodules,
107 N_("pathspec"), N_("initialize submodules in the clone"),
108 PARSE_OPT_OPTARG, recurse_submodules_cb, (intptr_t)"." },
72290d6a
SB
109 OPT_INTEGER('j', "jobs", &max_jobs,
110 N_("number of submodules cloned in parallel")),
32b77add
NTND
111 OPT_STRING(0, "template", &option_template, N_("template-directory"),
112 N_("directory from which templates will be used")),
5e40800d 113 OPT_STRING_LIST(0, "reference", &option_required_reference, N_("repo"),
8ade009c 114 N_("reference repository")),
f7415b4d
SB
115 OPT_STRING_LIST(0, "reference-if-able", &option_optional_reference,
116 N_("repo"), N_("reference repository")),
14f8b9b4
JK
117 OPT_BOOL(0, "dissociate", &option_dissociate,
118 N_("use --reference only while cloning")),
32b77add
NTND
119 OPT_STRING('o', "origin", &option_origin, N_("name"),
120 N_("use <name> instead of 'origin' to track upstream")),
121 OPT_STRING('b', "branch", &option_branch, N_("branch"),
122 N_("checkout <branch> instead of the remote's HEAD")),
123 OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"),
124 N_("path to git-upload-pack on the remote")),
125 OPT_STRING(0, "depth", &option_depth, N_("depth"),
126 N_("create a shallow clone of that depth")),
994c2aaf
NTND
127 OPT_STRING(0, "shallow-since", &option_since, N_("time"),
128 N_("create a shallow clone since a specific time")),
859e5df9 129 OPT_STRING_LIST(0, "shallow-exclude", &option_not, N_("revision"),
6d873865 130 N_("deepen history of shallow clone, excluding rev")),
3e6e0edd 131 OPT_BOOL(0, "single-branch", &option_single_branch,
32b77add 132 N_("clone only one branch, HEAD or --branch")),
0dab2468
ÆAB
133 OPT_BOOL(0, "no-tags", &option_no_tags,
134 N_("don't clone any tags, and make later fetches not to follow them")),
d22eb044
SB
135 OPT_BOOL(0, "shallow-submodules", &option_shallow_submodules,
136 N_("any cloned submodules will be shallow")),
32b77add
NTND
137 OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
138 N_("separate git dir from working tree")),
139 OPT_STRING_LIST('c', "config", &option_config, N_("key=value"),
140 N_("set config inside the new repository")),
6e983059
JT
141 OPT_STRING_LIST(0, "server-option", &server_options,
142 N_("server-specific"), N_("option to transmit")),
c915f11e
EW
143 OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
144 TRANSPORT_FAMILY_IPV4),
145 OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
146 TRANSPORT_FAMILY_IPV6),
548719fb 147 OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
8434c2f1
DB
148 OPT_END()
149};
150
0ea68e42 151static const char *get_repo_path_1(struct strbuf *path, int *is_bundle)
8434c2f1 152{
b3256eb8 153 static char *suffix[] = { "/.git", "", ".git/.git", ".git" };
8434c2f1 154 static char *bundle_suffix[] = { ".bundle", "" };
0ea68e42 155 size_t baselen = path->len;
8434c2f1
DB
156 struct stat st;
157 int i;
158
159 for (i = 0; i < ARRAY_SIZE(suffix); i++) {
0ea68e42
JK
160 strbuf_setlen(path, baselen);
161 strbuf_addstr(path, suffix[i]);
162 if (stat(path->buf, &st))
9b0ebc72 163 continue;
0ea68e42 164 if (S_ISDIR(st.st_mode) && is_git_directory(path->buf)) {
8434c2f1 165 *is_bundle = 0;
0ea68e42 166 return path->buf;
9b0ebc72
NTND
167 } else if (S_ISREG(st.st_mode) && st.st_size > 8) {
168 /* Is it a "gitfile"? */
169 char signature[8];
0ea68e42
JK
170 const char *dst;
171 int len, fd = open(path->buf, O_RDONLY);
9b0ebc72
NTND
172 if (fd < 0)
173 continue;
174 len = read_in_full(fd, signature, 8);
175 close(fd);
176 if (len != 8 || strncmp(signature, "gitdir: ", 8))
177 continue;
0ea68e42
JK
178 dst = read_gitfile(path->buf);
179 if (dst) {
9b0ebc72 180 *is_bundle = 0;
0ea68e42 181 return dst;
9b0ebc72 182 }
8434c2f1
DB
183 }
184 }
185
186 for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) {
0ea68e42
JK
187 strbuf_setlen(path, baselen);
188 strbuf_addstr(path, bundle_suffix[i]);
189 if (!stat(path->buf, &st) && S_ISREG(st.st_mode)) {
8434c2f1 190 *is_bundle = 1;
0ea68e42 191 return path->buf;
8434c2f1
DB
192 }
193 }
194
195 return NULL;
196}
197
0ea68e42
JK
198static char *get_repo_path(const char *repo, int *is_bundle)
199{
200 struct strbuf path = STRBUF_INIT;
201 const char *raw;
202 char *canon;
203
204 strbuf_addstr(&path, repo);
205 raw = get_repo_path_1(&path, is_bundle);
0aaad415 206 canon = raw ? absolute_pathdup(raw) : NULL;
0ea68e42
JK
207 strbuf_release(&path);
208 return canon;
209}
210
6612f877 211static char *guess_dir_name(const char *repo, int is_bundle, int is_bare)
8434c2f1 212{
e8959867 213 const char *end = repo + strlen(repo), *start, *ptr;
7e837c64 214 size_t len;
8a94bc7b 215 char *dir;
b8c5db35 216
e8959867
PS
217 /*
218 * Skip scheme.
219 */
220 start = strstr(repo, "://");
221 if (start == NULL)
222 start = repo;
223 else
224 start += 3;
225
226 /*
227 * Skip authentication data. The stripping does happen
228 * greedily, such that we strip up to the last '@' inside
229 * the host part.
230 */
231 for (ptr = start; ptr < end && !is_dir_sep(*ptr); ptr++) {
232 if (*ptr == '@')
233 start = ptr + 1;
234 }
235
b8c5db35 236 /*
8a94bc7b 237 * Strip trailing spaces, slashes and /.git
b8c5db35 238 */
e8959867 239 while (start < end && (is_dir_sep(end[-1]) || isspace(end[-1])))
b8c5db35 240 end--;
e8959867 241 if (end - start > 5 && is_dir_sep(end[-5]) &&
b8c5db35
JS
242 !strncmp(end - 4, ".git", 4)) {
243 end -= 5;
e8959867 244 while (start < end && is_dir_sep(end[-1]))
b8c5db35
JS
245 end--;
246 }
247
248 /*
92722efe
PS
249 * Strip trailing port number if we've got only a
250 * hostname (that is, there is no dir separator but a
251 * colon). This check is required such that we do not
252 * strip URI's like '/foo/bar:2222.git', which should
253 * result in a dir '2222' being guessed due to backwards
254 * compatibility.
255 */
256 if (memchr(start, '/', end - start) == NULL
257 && memchr(start, ':', end - start) != NULL) {
258 ptr = end;
259 while (start < ptr && isdigit(ptr[-1]) && ptr[-1] != ':')
260 ptr--;
261 if (start < ptr && ptr[-1] == ':')
262 end = ptr - 1;
263 }
264
b8c5db35 265 /*
e8959867
PS
266 * Find last component. To remain backwards compatible we
267 * also regard colons as path separators, such that
268 * cloning a repository 'foo:bar.git' would result in a
269 * directory 'bar' being guessed.
b8c5db35 270 */
e8959867
PS
271 ptr = end;
272 while (start < ptr && !is_dir_sep(ptr[-1]) && ptr[-1] != ':')
273 ptr--;
274 start = ptr;
b8c5db35
JS
275
276 /*
277 * Strip .{bundle,git}.
278 */
db2e2204
JK
279 len = end - start;
280 strip_suffix_mem(start, &len, is_bundle ? ".bundle" : ".git");
8434c2f1 281
adef9561 282 if (!len || (len == 1 && *start == '/'))
39ad4f39
NTND
283 die(_("No directory name could be guessed.\n"
284 "Please specify a directory on the command line"));
adef9561 285
7e837c64
SS
286 if (is_bare)
287 dir = xstrfmt("%.*s.git", (int)len, start);
288 else
289 dir = xstrndup(start, len);
8a94bc7b
AR
290 /*
291 * Replace sequences of 'control' characters and whitespace
292 * with one ascii space, remove leading and trailing spaces.
293 */
294 if (*dir) {
295 char *out = dir;
296 int prev_space = 1 /* strip leading whitespace */;
297 for (end = dir; *end; ++end) {
298 char ch = *end;
299 if ((unsigned char)ch < '\x20')
300 ch = '\x20';
301 if (isspace(ch)) {
302 if (prev_space)
303 continue;
304 prev_space = 1;
305 } else
306 prev_space = 0;
307 *out++ = ch;
308 }
309 *out = '\0';
310 if (out > dir && prev_space)
311 out[-1] = '\0';
6612f877 312 }
8a94bc7b 313 return dir;
8434c2f1
DB
314}
315
44a68fd5
CB
316static void strip_trailing_slashes(char *dir)
317{
318 char *end = dir + strlen(dir);
319
320 while (dir < end - 1 && is_dir_sep(end[-1]))
321 end--;
322 *end = '\0';
323}
324
dbc92b07 325static int add_one_reference(struct string_list_item *item, void *cb_data)
8434c2f1 326{
9eeea7d2 327 struct strbuf err = STRBUF_INIT;
f7415b4d 328 int *required = cb_data;
9eeea7d2 329 char *ref_git = compute_alternate_path(item->string, &err);
8434c2f1 330
f7415b4d
SB
331 if (!ref_git) {
332 if (*required)
333 die("%s", err.buf);
334 else
335 fprintf(stderr,
336 _("info: Could not add alternate for '%s': %s\n"),
337 item->string, err.buf);
338 } else {
339 struct strbuf sb = STRBUF_INIT;
340 strbuf_addf(&sb, "%s/objects", ref_git);
341 add_to_alternates_file(sb.buf);
342 strbuf_release(&sb);
343 }
606e435a 344
9eeea7d2 345 strbuf_release(&err);
f7415b4d 346 free(ref_git);
dbc92b07
JH
347 return 0;
348}
8434c2f1 349
dbc92b07
JH
350static void setup_reference(void)
351{
f7415b4d
SB
352 int required = 1;
353 for_each_string_list(&option_required_reference,
354 add_one_reference, &required);
355 required = 0;
356 for_each_string_list(&option_optional_reference,
357 add_one_reference, &required);
8434c2f1
DB
358}
359
3c1dce88 360static void copy_alternates(struct strbuf *src, const char *src_repo)
e6baf4a1
JH
361{
362 /*
363 * Read from the source objects/info/alternates file
364 * and copy the entries to corresponding file in the
365 * destination repository with add_to_alternates_file().
366 * Both src and dst have "$path/objects/info/alternates".
367 *
368 * Instead of copying bit-for-bit from the original,
369 * we need to append to existing one so that the already
370 * created entry via "clone -s" is not lost, and also
371 * to turn entries with paths relative to the original
372 * absolute, so that they can be used in the new repository.
373 */
02912f47 374 FILE *in = xfopen(src->buf, "r");
e6baf4a1
JH
375 struct strbuf line = STRBUF_INIT;
376
3f163962 377 while (strbuf_getline(&line, in) != EOF) {
dcf69262 378 char *abs_path;
e6baf4a1
JH
379 if (!line.len || line.buf[0] == '#')
380 continue;
381 if (is_absolute_path(line.buf)) {
382 add_to_alternates_file(line.buf);
383 continue;
384 }
dcf69262 385 abs_path = mkpathdup("%s/objects/%s", src_repo, line.buf);
22d3b8de
JK
386 if (!normalize_path_copy(abs_path, abs_path))
387 add_to_alternates_file(abs_path);
388 else
389 warning("skipping invalid relative alternate: %s/%s",
390 src_repo, line.buf);
dcf69262 391 free(abs_path);
e6baf4a1
JH
392 }
393 strbuf_release(&line);
394 fclose(in);
395}
396
397static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
398 const char *src_repo, int src_baselen)
8434c2f1
DB
399{
400 struct dirent *de;
401 struct stat buf;
402 int src_len, dest_len;
403 DIR *dir;
404
b9e125e0 405 dir = opendir(src->buf);
8434c2f1 406 if (!dir)
e84d7b74 407 die_errno(_("failed to open '%s'"), src->buf);
8434c2f1 408
b9e125e0 409 if (mkdir(dest->buf, 0777)) {
8434c2f1 410 if (errno != EEXIST)
e84d7b74 411 die_errno(_("failed to create directory '%s'"), dest->buf);
b9e125e0 412 else if (stat(dest->buf, &buf))
e84d7b74 413 die_errno(_("failed to stat '%s'"), dest->buf);
8434c2f1 414 else if (!S_ISDIR(buf.st_mode))
e84d7b74 415 die(_("%s exists and is not a directory"), dest->buf);
8434c2f1
DB
416 }
417
b9e125e0
MV
418 strbuf_addch(src, '/');
419 src_len = src->len;
420 strbuf_addch(dest, '/');
421 dest_len = dest->len;
8434c2f1
DB
422
423 while ((de = readdir(dir)) != NULL) {
b9e125e0
MV
424 strbuf_setlen(src, src_len);
425 strbuf_addstr(src, de->d_name);
426 strbuf_setlen(dest, dest_len);
427 strbuf_addstr(dest, de->d_name);
428 if (stat(src->buf, &buf)) {
e84d7b74 429 warning (_("failed to stat %s\n"), src->buf);
8434c2f1
DB
430 continue;
431 }
432 if (S_ISDIR(buf.st_mode)) {
433 if (de->d_name[0] != '.')
e6baf4a1
JH
434 copy_or_link_directory(src, dest,
435 src_repo, src_baselen);
436 continue;
437 }
438
439 /* Files that cannot be copied bit-for-bit... */
440 if (!strcmp(src->buf + src_baselen, "/info/alternates")) {
3c1dce88 441 copy_alternates(src, src_repo);
8434c2f1
DB
442 continue;
443 }
444
b9e125e0 445 if (unlink(dest->buf) && errno != ENOENT)
e84d7b74 446 die_errno(_("failed to unlink '%s'"), dest->buf);
fdabc242 447 if (!option_no_hardlinks) {
b9e125e0 448 if (!link(src->buf, dest->buf))
fdabc242 449 continue;
189260b1 450 if (option_local > 0)
e84d7b74 451 die_errno(_("failed to create link '%s'"), dest->buf);
fdabc242 452 option_no_hardlinks = 1;
8434c2f1 453 }
f7835a25 454 if (copy_file_with_time(dest->buf, src->buf, 0666))
e84d7b74 455 die_errno(_("failed to copy file to '%s'"), dest->buf);
8434c2f1 456 }
689ef4d4 457 closedir(dir);
8434c2f1
DB
458}
459
6f48d39f 460static void clone_local(const char *src_repo, const char *dest_repo)
8434c2f1 461{
e6baf4a1
JH
462 if (option_shared) {
463 struct strbuf alt = STRBUF_INIT;
b3b05971
ES
464 get_common_dir(&alt, src_repo);
465 strbuf_addstr(&alt, "/objects");
e6baf4a1
JH
466 add_to_alternates_file(alt.buf);
467 strbuf_release(&alt);
468 } else {
469 struct strbuf src = STRBUF_INIT;
470 struct strbuf dest = STRBUF_INIT;
744e4697
NTND
471 get_common_dir(&src, src_repo);
472 get_common_dir(&dest, dest_repo);
473 strbuf_addstr(&src, "/objects");
474 strbuf_addstr(&dest, "/objects");
e6baf4a1 475 copy_or_link_directory(&src, &dest, src_repo, src.len);
b9e125e0
MV
476 strbuf_release(&src);
477 strbuf_release(&dest);
8434c2f1
DB
478 }
479
28ba96ab 480 if (0 <= option_verbosity)
68b939b2 481 fprintf(stderr, _("done.\n"));
8434c2f1
DB
482}
483
484static const char *junk_work_tree;
d45420c1 485static int junk_work_tree_flags;
8434c2f1 486static const char *junk_git_dir;
d45420c1 487static int junk_git_dir_flags;
85064630 488static enum {
d3b34622
JK
489 JUNK_LEAVE_NONE,
490 JUNK_LEAVE_REPO,
491 JUNK_LEAVE_ALL
492} junk_mode = JUNK_LEAVE_NONE;
493
494static const char junk_leave_repo_msg[] =
495N_("Clone succeeded, but checkout failed.\n"
496 "You can inspect what was checked out with 'git status'\n"
497 "and retry the checkout with 'git checkout -f HEAD'\n");
8434c2f1
DB
498
499static void remove_junk(void)
500{
f285a2d7 501 struct strbuf sb = STRBUF_INIT;
d3b34622
JK
502
503 switch (junk_mode) {
504 case JUNK_LEAVE_REPO:
505 warning("%s", _(junk_leave_repo_msg));
506 /* fall-through */
507 case JUNK_LEAVE_ALL:
508 return;
509 default:
510 /* proceed to removal */
511 break;
512 }
513
8434c2f1
DB
514 if (junk_git_dir) {
515 strbuf_addstr(&sb, junk_git_dir);
d45420c1 516 remove_dir_recursively(&sb, junk_git_dir_flags);
8434c2f1
DB
517 strbuf_reset(&sb);
518 }
519 if (junk_work_tree) {
520 strbuf_addstr(&sb, junk_work_tree);
d45420c1 521 remove_dir_recursively(&sb, junk_work_tree_flags);
8434c2f1 522 }
9c18b548 523 strbuf_release(&sb);
8434c2f1
DB
524}
525
526static void remove_junk_on_signal(int signo)
527{
528 remove_junk();
4a16d072 529 sigchain_pop(signo);
8434c2f1
DB
530 raise(signo);
531}
532
9e585046
NTND
533static struct ref *find_remote_branch(const struct ref *refs, const char *branch)
534{
535 struct ref *ref;
536 struct strbuf head = STRBUF_INIT;
537 strbuf_addstr(&head, "refs/heads/");
538 strbuf_addstr(&head, branch);
539 ref = find_ref_by_name(refs, head.buf);
540 strbuf_release(&head);
5a7d5b68
NTND
541
542 if (ref)
543 return ref;
544
545 strbuf_addstr(&head, "refs/tags/");
546 strbuf_addstr(&head, branch);
547 ref = find_ref_by_name(refs, head.buf);
548 strbuf_release(&head);
549
9e585046
NTND
550 return ref;
551}
552
5bdc32d3 553static struct ref *wanted_peer_refs(const struct ref *refs,
515be833 554 struct refspec *refspec)
8434c2f1 555{
c1921c18
JK
556 struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD"));
557 struct ref *local_refs = head;
558 struct ref **tail = head ? &head->next : &local_refs;
8434c2f1 559
3e6e0edd
NTND
560 if (option_single_branch) {
561 struct ref *remote_head = NULL;
562
563 if (!option_branch)
564 remote_head = guess_remote_head(head, refs, 0);
0ec4b165
NTND
565 else {
566 local_refs = NULL;
567 tail = &local_refs;
568 remote_head = copy_ref(find_remote_branch(refs, option_branch));
569 }
3e6e0edd
NTND
570
571 if (!remote_head && option_branch)
572 warning(_("Could not find remote branch %s to clone."),
573 option_branch);
5a7d5b68 574 else {
515be833
SG
575 int i;
576 for (i = 0; i < refspec->nr; i++)
577 get_fetch_map(remote_head, &refspec->items[i],
578 &tail, 0);
5a7d5b68
NTND
579
580 /* if --branch=tag, pull the requested tag explicitly */
581 get_fetch_map(remote_head, tag_refspec, &tail, 0);
582 }
515be833
SG
583 } else {
584 int i;
585 for (i = 0; i < refspec->nr; i++)
586 get_fetch_map(refs, &refspec->items[i], &tail, 0);
587 }
3e6e0edd 588
0dab2468 589 if (!option_mirror && !option_single_branch && !option_no_tags)
468386a9 590 get_fetch_map(refs, tag_refspec, &tail, 0);
8434c2f1 591
5bdc32d3
NP
592 return local_refs;
593}
594
595static void write_remote_refs(const struct ref *local_refs)
596{
597 const struct ref *r;
598
58f233ce
MH
599 struct ref_transaction *t;
600 struct strbuf err = STRBUF_INIT;
601
602 t = ref_transaction_begin(&err);
603 if (!t)
604 die("%s", err.buf);
9f69d297 605
c1921c18
JK
606 for (r = local_refs; r; r = r->next) {
607 if (!r->peer_ref)
608 continue;
89f3bbdd 609 if (ref_transaction_create(t, r->peer_ref->name, &r->old_oid,
58f233ce
MH
610 0, NULL, &err))
611 die("%s", err.buf);
c1921c18 612 }
3e8aded2 613
58f233ce
MH
614 if (initial_ref_transaction_commit(t, &err))
615 die("%s", err.buf);
616
617 strbuf_release(&err);
618 ref_transaction_free(t);
8434c2f1
DB
619}
620
3e6e0edd
NTND
621static void write_followtags(const struct ref *refs, const char *msg)
622{
623 const struct ref *ref;
624 for (ref = refs; ref; ref = ref->next) {
59556548 625 if (!starts_with(ref->name, "refs/tags/"))
3e6e0edd 626 continue;
59556548 627 if (ends_with(ref->name, "^{}"))
3e6e0edd 628 continue;
f4e54d02 629 if (!has_object_file(&ref->old_oid))
3e6e0edd 630 continue;
ae077771 631 update_ref(msg, ref->name, &ref->old_oid, NULL, 0,
632 UPDATE_REFS_DIE_ON_ERR);
3e6e0edd
NTND
633 }
634}
635
6ccac9ee 636static int iterate_ref_map(void *cb_data, struct object_id *oid)
0433ad12
JK
637{
638 struct ref **rm = cb_data;
639 struct ref *ref = *rm;
640
641 /*
642 * Skip anything missing a peer_ref, which we are not
643 * actually going to write a ref for.
644 */
645 while (ref && !ref->peer_ref)
646 ref = ref->next;
647 /* Returning -1 notes "end of list" to the caller. */
648 if (!ref)
649 return -1;
650
6ccac9ee 651 oidcpy(oid, &ref->old_oid);
0433ad12
JK
652 *rm = ref->next;
653 return 0;
654}
655
960b7d1c
NTND
656static void update_remote_refs(const struct ref *refs,
657 const struct ref *mapped_refs,
658 const struct ref *remote_head_points_at,
659 const char *branch_top,
c6807a40 660 const char *msg,
45ed4afa 661 struct transport *transport,
125a05fd 662 int check_connectivity)
960b7d1c 663{
0433ad12
JK
664 const struct ref *rm = mapped_refs;
665
125a05fd 666 if (check_connectivity) {
7043c707
JK
667 struct check_connected_options opt = CHECK_CONNECTED_INIT;
668
669 opt.transport = transport;
38e590ea 670 opt.progress = transport->progress;
7043c707 671
7043c707 672 if (check_connected(iterate_ref_map, &rm, &opt))
125a05fd
JK
673 die(_("remote did not send all necessary objects"));
674 }
0433ad12 675
960b7d1c 676 if (refs) {
960b7d1c 677 write_remote_refs(mapped_refs);
0dab2468 678 if (option_single_branch && !option_no_tags)
960b7d1c
NTND
679 write_followtags(refs, msg);
680 }
681
682 if (remote_head_points_at && !option_bare) {
683 struct strbuf head_ref = STRBUF_INIT;
684 strbuf_addstr(&head_ref, branch_top);
685 strbuf_addstr(&head_ref, "HEAD");
4be49d75
JK
686 if (create_symref(head_ref.buf,
687 remote_head_points_at->peer_ref->name,
688 msg) < 0)
39ad4f39 689 die(_("unable to update %s"), head_ref.buf);
4be49d75 690 strbuf_release(&head_ref);
960b7d1c
NTND
691 }
692}
693
f034d354
NTND
694static void update_head(const struct ref *our, const struct ref *remote,
695 const char *msg)
696{
cf4fff57
JK
697 const char *head;
698 if (our && skip_prefix(our->name, "refs/heads/", &head)) {
f034d354 699 /* Local default branch link */
4be49d75 700 if (create_symref("HEAD", our->name, NULL) < 0)
39ad4f39 701 die(_("unable to update HEAD"));
f034d354 702 if (!option_bare) {
ae077771 703 update_ref(msg, "HEAD", &our->old_oid, NULL, 0,
f4124112 704 UPDATE_REFS_DIE_ON_ERR);
f034d354
NTND
705 install_branch_config(0, head, option_origin, our->name);
706 }
5a7d5b68 707 } else if (our) {
2122f675
SB
708 struct commit *c = lookup_commit_reference(the_repository,
709 &our->old_oid);
5a7d5b68 710 /* --branch specifies a non-branch (i.e. tags), detach HEAD */
91774afc 711 update_ref(msg, "HEAD", &c->object.oid, NULL, REF_NO_DEREF,
ae077771 712 UPDATE_REFS_DIE_ON_ERR);
f034d354
NTND
713 } else if (remote) {
714 /*
715 * We know remote HEAD points to a non-branch, or
920b691f 716 * HEAD points to a branch but we don't know which one.
f034d354
NTND
717 * Detach HEAD in all these cases.
718 */
91774afc 719 update_ref(msg, "HEAD", &remote->old_oid, NULL, REF_NO_DEREF,
ae077771 720 UPDATE_REFS_DIE_ON_ERR);
f034d354
NTND
721 }
722}
723
72c5f883 724static int checkout(int submodule_progress)
c39852c1 725{
ddc2cc64 726 struct object_id oid;
c39852c1 727 char *head;
837e34eb 728 struct lock_file lock_file = LOCK_INIT;
c39852c1
NTND
729 struct unpack_trees_options opts;
730 struct tree *tree;
731 struct tree_desc t;
03b86647 732 int err = 0;
c39852c1
NTND
733
734 if (option_no_checkout)
735 return 0;
736
0f2dc722 737 head = resolve_refdup("HEAD", RESOLVE_REF_READING, &oid, NULL);
c39852c1
NTND
738 if (!head) {
739 warning(_("remote HEAD refers to nonexistent ref, "
740 "unable to checkout.\n"));
741 return 0;
742 }
2857093b
NTND
743 if (!strcmp(head, "HEAD")) {
744 if (advice_detached_head)
ddc2cc64 745 detach_advice(oid_to_hex(&oid));
2857093b 746 } else {
59556548 747 if (!starts_with(head, "refs/heads/"))
c39852c1
NTND
748 die(_("HEAD not found below refs/heads!"));
749 }
750 free(head);
751
752 /* We need to be in the new work tree for the checkout */
753 setup_work_tree();
754
837e34eb 755 hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
c39852c1
NTND
756
757 memset(&opts, 0, sizeof opts);
758 opts.update = 1;
759 opts.merge = 1;
b878579a 760 opts.clone = 1;
c39852c1 761 opts.fn = oneway_merge;
8f63da13 762 opts.verbose_update = (option_verbosity >= 0);
c39852c1
NTND
763 opts.src_index = &the_index;
764 opts.dst_index = &the_index;
765
a9dbc179 766 tree = parse_tree_indirect(&oid);
c39852c1
NTND
767 parse_tree(tree);
768 init_tree_desc(&t, tree->buffer, tree->size);
0aac7bb2
JK
769 if (unpack_trees(1, &t, &opts) < 0)
770 die(_("unable to checkout working tree"));
c39852c1 771
837e34eb 772 if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
c39852c1
NTND
773 die(_("unable to write new index file"));
774
15048f8a 775 err |= run_hook_le(NULL, "post-checkout", sha1_to_hex(null_sha1),
ddc2cc64 776 oid_to_hex(&oid), "1", NULL);
c39852c1 777
bb62e0a9 778 if (!err && (option_recurse_submodules.nr > 0)) {
72290d6a
SB
779 struct argv_array args = ARGV_ARRAY_INIT;
780 argv_array_pushl(&args, "submodule", "update", "--init", "--recursive", NULL);
781
18a74a09 782 if (option_shallow_submodules == 1)
d22eb044
SB
783 argv_array_push(&args, "--depth=1");
784
72290d6a
SB
785 if (max_jobs != -1)
786 argv_array_pushf(&args, "--jobs=%d", max_jobs);
787
72c5f883
JK
788 if (submodule_progress)
789 argv_array_push(&args, "--progress");
790
03c004c5
BW
791 if (option_verbosity < 0)
792 argv_array_push(&args, "--quiet");
793
72290d6a
SB
794 err = run_command_v_opt(args.argv, RUN_GIT_CMD);
795 argv_array_clear(&args);
796 }
c39852c1
NTND
797
798 return err;
799}
800
84054f79
JK
801static int write_one_config(const char *key, const char *value, void *data)
802{
db4eca1f
JN
803 return git_config_set_multivar_gently(key,
804 value ? value : "true",
805 CONFIG_REGEX_NONE, 0);
84054f79
JK
806}
807
808static void write_config(struct string_list *config)
809{
810 int i;
811
812 for (i = 0; i < config->nr; i++) {
813 if (git_config_parse_parameter(config->items[i].string,
814 write_one_config, NULL) < 0)
39ad4f39 815 die(_("unable to write parameters to config file"));
84054f79
JK
816 }
817}
818
24d36f14
DA
819static void write_refspec_config(const char *src_ref_prefix,
820 const struct ref *our_head_points_at,
821 const struct ref *remote_head_points_at,
822 struct strbuf *branch_top)
31b808a0
RT
823{
824 struct strbuf key = STRBUF_INIT;
825 struct strbuf value = STRBUF_INIT;
826
827 if (option_mirror || !option_bare) {
828 if (option_single_branch && !option_mirror) {
829 if (option_branch) {
60a5f5fc 830 if (starts_with(our_head_points_at->name, "refs/tags/"))
31b808a0
RT
831 strbuf_addf(&value, "+%s:%s", our_head_points_at->name,
832 our_head_points_at->name);
833 else
834 strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name,
835 branch_top->buf, option_branch);
836 } else if (remote_head_points_at) {
cf4fff57
JK
837 const char *head = remote_head_points_at->name;
838 if (!skip_prefix(head, "refs/heads/", &head))
033abf97 839 BUG("remote HEAD points at non-head?");
cf4fff57 840
31b808a0 841 strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
cf4fff57 842 branch_top->buf, head);
31b808a0
RT
843 }
844 /*
845 * otherwise, the next "git fetch" will
846 * simply fetch from HEAD without updating
d6ac1d21 847 * any remote-tracking branch, which is what
31b808a0
RT
848 * we want.
849 */
850 } else {
851 strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf);
852 }
853 /* Configure the remote */
854 if (value.len) {
855 strbuf_addf(&key, "remote.%s.fetch", option_origin);
856 git_config_set_multivar(key.buf, value.buf, "^$", 0);
857 strbuf_reset(&key);
858
859 if (option_mirror) {
860 strbuf_addf(&key, "remote.%s.mirror", option_origin);
861 git_config_set(key.buf, "true");
862 strbuf_reset(&key);
863 }
864 }
865 }
866
867 strbuf_release(&key);
868 strbuf_release(&value);
869}
870
fb1d6dab
JH
871static void dissociate_from_references(void)
872{
873 static const char* argv[] = { "repack", "-a", "-d", NULL };
0181681e 874 char *alternates = git_pathdup("objects/info/alternates");
fb1d6dab 875
0181681e
AR
876 if (!access(alternates, F_OK)) {
877 if (run_command_v_opt(argv, RUN_GIT_CMD|RUN_COMMAND_NO_STDIN))
878 die(_("cannot repack to clean up"));
879 if (unlink(alternates) && errno != ENOENT)
880 die_errno(_("cannot unlink temporary alternates file"));
881 }
882 free(alternates);
fb1d6dab
JH
883}
884
f9e377ad
JK
885static int dir_exists(const char *path)
886{
887 struct stat sb;
888 return !stat(path, &sb);
889}
890
8434c2f1
DB
891int cmd_clone(int argc, const char **argv, const char *prefix)
892{
24c61c44 893 int is_bundle = 0, is_local;
8434c2f1
DB
894 const char *repo_name, *repo, *work_tree, *git_dir;
895 char *path, *dir;
55892d23 896 int dest_exists;
37148311 897 const struct ref *refs, *remote_head;
7a4ee28f
JK
898 const struct ref *remote_head_points_at;
899 const struct ref *our_head_points_at;
37148311 900 struct ref *mapped_refs;
90498161 901 const struct ref *ref;
3e42cb3b
SG
902 struct strbuf key = STRBUF_INIT;
903 struct strbuf default_refspec = STRBUF_INIT;
b5ff37ac 904 struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
1db4a75c 905 struct transport *transport = NULL;
9e585046 906 const char *src_ref_prefix = "refs/heads/";
6f48d39f 907 struct remote *remote;
90498161 908 int err = 0, complete_refs_before_fetch = 1;
72c5f883 909 int submodule_progress;
8434c2f1 910
402c47d9 911 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
8434c2f1 912
548719fb
JT
913 fetch_if_missing = 0;
914
bbc30f99 915 packet_trace_identity("clone");
37782920 916 argc = parse_options(argc, argv, prefix, builtin_clone_options,
8434c2f1
DB
917 builtin_clone_usage, 0);
918
d52dc4b1 919 if (argc > 2)
e84d7b74 920 usage_msg_opt(_("Too many arguments."),
d52dc4b1
JN
921 builtin_clone_usage, builtin_clone_options);
922
8434c2f1 923 if (argc == 0)
e84d7b74 924 usage_msg_opt(_("You must specify a repository to clone."),
d52dc4b1 925 builtin_clone_usage, builtin_clone_options);
8434c2f1 926
859e5df9 927 if (option_depth || option_since || option_not.nr)
994c2aaf 928 deepen = 1;
3e6e0edd 929 if (option_single_branch == -1)
994c2aaf 930 option_single_branch = deepen ? 1 : 0;
3e6e0edd 931
bc699afc
JS
932 if (option_mirror)
933 option_bare = 1;
934
8434c2f1
DB
935 if (option_bare) {
936 if (option_origin)
e84d7b74 937 die(_("--bare and --origin %s options are incompatible."),
8434c2f1 938 option_origin);
95b63f1e
NTND
939 if (real_git_dir)
940 die(_("--bare and --separate-git-dir are incompatible."));
8434c2f1 941 option_no_checkout = 1;
8434c2f1
DB
942 }
943
944 if (!option_origin)
945 option_origin = "origin";
946
947 repo_name = argv[0];
948
949 path = get_repo_path(repo_name, &is_bundle);
950 if (path)
0aaad415 951 repo = absolute_pathdup(repo_name);
8434c2f1 952 else if (!strchr(repo_name, ':'))
d3e1ddfd 953 die(_("repository '%s' does not exist"), repo_name);
8434c2f1
DB
954 else
955 repo = repo_name;
956
5594bcad
NTND
957 /* no need to be strict, transport_set_option() will validate it again */
958 if (option_depth && atoi(option_depth) < 1)
959 die(_("depth %s is not a positive number"), option_depth);
960
8434c2f1
DB
961 if (argc == 2)
962 dir = xstrdup(argv[1]);
963 else
6612f877 964 dir = guess_dir_name(repo_name, is_bundle, option_bare);
44a68fd5 965 strip_trailing_slashes(dir);
8434c2f1 966
f9e377ad 967 dest_exists = dir_exists(dir);
55892d23 968 if (dest_exists && !is_empty_dir(dir))
e84d7b74
ÆAB
969 die(_("destination path '%s' already exists and is not "
970 "an empty directory."), dir);
8434c2f1 971
8434c2f1
DB
972 strbuf_addf(&reflog_msg, "clone: from %s", repo);
973
974 if (option_bare)
975 work_tree = NULL;
976 else {
977 work_tree = getenv("GIT_WORK_TREE");
f9e377ad 978 if (work_tree && dir_exists(work_tree))
e84d7b74 979 die(_("working tree '%s' already exists."), work_tree);
8434c2f1
DB
980 }
981
982 if (option_bare || work_tree)
983 git_dir = xstrdup(dir);
984 else {
985 work_tree = dir;
4e2d094d 986 git_dir = mkpathdup("%s/.git", dir);
8434c2f1
DB
987 }
988
ee0e3872
JK
989 atexit(remove_junk);
990 sigchain_push_common(remove_junk_on_signal);
991
8434c2f1 992 if (!option_bare) {
8e21d63b 993 if (safe_create_leading_directories_const(work_tree) < 0)
e84d7b74 994 die_errno(_("could not create leading directories of '%s'"),
d824cbba 995 work_tree);
d45420c1
JK
996 if (dest_exists)
997 junk_work_tree_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
998 else if (mkdir(work_tree, 0777))
16eff6c0 999 die_errno(_("could not create work tree dir '%s'"),
d824cbba 1000 work_tree);
ee0e3872 1001 junk_work_tree = work_tree;
8434c2f1
DB
1002 set_git_work_tree(work_tree);
1003 }
8434c2f1 1004
d45420c1
JK
1005 if (real_git_dir) {
1006 if (dir_exists(real_git_dir))
1007 junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
1008 junk_git_dir = real_git_dir;
1009 } else {
1010 if (dest_exists)
1011 junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
1012 junk_git_dir = git_dir;
1013 }
8e21d63b 1014 if (safe_create_leading_directories_const(git_dir) < 0)
e84d7b74 1015 die(_("could not create leading directories of '%s'"), git_dir);
b57fb80a 1016
3781fcce
ÆAB
1017 if (0 <= option_verbosity) {
1018 if (option_bare)
68b939b2 1019 fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir);
3781fcce 1020 else
68b939b2 1021 fprintf(stderr, _("Cloning into '%s'...\n"), dir);
3781fcce 1022 }
31224cbd 1023
bb62e0a9
BW
1024 if (option_recurse_submodules.nr > 0) {
1025 struct string_list_item *item;
1026 struct strbuf sb = STRBUF_INIT;
1027
1028 /* remove duplicates */
1029 string_list_sort(&option_recurse_submodules);
1030 string_list_remove_duplicates(&option_recurse_submodules, 0);
1031
1032 /*
1033 * NEEDSWORK: In a multi-working-tree world, this needs to be
1034 * set in the per-worktree config.
1035 */
1036 for_each_string_list_item(item, &option_recurse_submodules) {
1037 strbuf_addf(&sb, "submodule.active=%s",
1038 item->string);
1039 string_list_append(&option_config,
1040 strbuf_detach(&sb, NULL));
1041 }
1042
31224cbd
SB
1043 if (option_required_reference.nr &&
1044 option_optional_reference.nr)
1045 die(_("clone --recursive is not compatible with "
1046 "both --reference and --reference-if-able"));
1047 else if (option_required_reference.nr) {
1048 string_list_append(&option_config,
1049 "submodule.alternateLocation=superproject");
1050 string_list_append(&option_config,
1051 "submodule.alternateErrorStrategy=die");
1052 } else if (option_optional_reference.nr) {
1053 string_list_append(&option_config,
1054 "submodule.alternateLocation=superproject");
1055 string_list_append(&option_config,
1056 "submodule.alternateErrorStrategy=info");
1057 }
1058 }
1059
33158701
NTND
1060 init_db(git_dir, real_git_dir, option_template, INIT_DB_QUIET);
1061
1062 if (real_git_dir)
1063 git_dir = real_git_dir;
1064
84054f79 1065 write_config(&option_config);
8434c2f1 1066
9bd81e42 1067 git_config(git_default_config, NULL);
8434c2f1
DB
1068
1069 if (option_bare) {
bc699afc
JS
1070 if (option_mirror)
1071 src_ref_prefix = "refs/";
b5ff37ac 1072 strbuf_addstr(&branch_top, src_ref_prefix);
8434c2f1
DB
1073
1074 git_config_set("core.bare", "true");
1075 } else {
b5ff37ac 1076 strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin);
bc699afc 1077 }
8434c2f1 1078
df61c889
SR
1079 strbuf_addf(&key, "remote.%s.url", option_origin);
1080 git_config_set(key.buf, repo);
1081 strbuf_reset(&key);
1082
0dab2468
ÆAB
1083 if (option_no_tags) {
1084 strbuf_addf(&key, "remote.%s.tagOpt", option_origin);
1085 git_config_set(key.buf, "--no-tags");
1086 strbuf_reset(&key);
1087 }
1088
f7415b4d 1089 if (option_required_reference.nr || option_optional_reference.nr)
dbc92b07 1090 setup_reference();
766ac6a6 1091
515be833 1092 remote = remote_get(option_origin);
689f0396 1093
3e42cb3b
SG
1094 strbuf_addf(&default_refspec, "+%s*:%s*", src_ref_prefix,
1095 branch_top.buf);
515be833 1096 refspec_append(&remote->fetch, default_refspec.buf);
8434c2f1 1097
6f48d39f 1098 transport = transport_get(remote, remote->url[0]);
822f0c4f 1099 transport_set_verbosity(transport, option_verbosity, option_progress);
c915f11e 1100 transport->family = family;
822f0c4f 1101
f38aa83f
MB
1102 path = get_repo_path(remote->url[0], &is_bundle);
1103 is_local = option_local != 0 && path && !is_bundle;
1104 if (is_local) {
1105 if (option_depth)
1106 warning(_("--depth is ignored in local clones; use file:// instead."));
994c2aaf
NTND
1107 if (option_since)
1108 warning(_("--shallow-since is ignored in local clones; use file:// instead."));
859e5df9
NTND
1109 if (option_not.nr)
1110 warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
548719fb
JT
1111 if (filter_options.choice)
1112 warning(_("--filter is ignored in local clones; use file:// instead."));
f38aa83f
MB
1113 if (!access(mkpath("%s/shallow", path), F_OK)) {
1114 if (option_local > 0)
1115 warning(_("source repository is shallow, ignoring --local"));
1116 is_local = 0;
1117 }
1118 }
1119 if (option_local > 0 && !is_local)
1120 warning(_("--local is ignored"));
beea4152 1121 transport->cloning = 1;
8434c2f1 1122
643f918d 1123 transport_set_option(transport, TRANS_OPT_KEEP, "yes");
8434c2f1 1124
643f918d
JK
1125 if (option_depth)
1126 transport_set_option(transport, TRANS_OPT_DEPTH,
1127 option_depth);
994c2aaf
NTND
1128 if (option_since)
1129 transport_set_option(transport, TRANS_OPT_DEEPEN_SINCE,
1130 option_since);
859e5df9
NTND
1131 if (option_not.nr)
1132 transport_set_option(transport, TRANS_OPT_DEEPEN_NOT,
1133 (const char *)&option_not);
643f918d
JK
1134 if (option_single_branch)
1135 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
8434c2f1 1136
643f918d
JK
1137 if (option_upload_pack)
1138 transport_set_option(transport, TRANS_OPT_UPLOADPACK,
1139 option_upload_pack);
c6807a40 1140
6e983059
JT
1141 if (server_options.nr)
1142 transport->server_options = &server_options;
1143
548719fb 1144 if (filter_options.choice) {
87c2d9d3
JS
1145 struct strbuf expanded_filter_spec = STRBUF_INIT;
1146 expand_list_objects_filter_spec(&filter_options,
1147 &expanded_filter_spec);
548719fb 1148 transport_set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
87c2d9d3 1149 expanded_filter_spec.buf);
548719fb 1150 transport_set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
87c2d9d3 1151 strbuf_release(&expanded_filter_spec);
548719fb
JT
1152 }
1153
1154 if (transport->smart_options && !deepen && !filter_options.choice)
643f918d 1155 transport->smart_options->check_self_contained_and_connected = 1;
8434c2f1 1156
402c47d9
BW
1157
1158 argv_array_push(&ref_prefixes, "HEAD");
515be833 1159 refspec_ref_prefixes(&remote->fetch, &ref_prefixes);
402c47d9
BW
1160 if (option_branch)
1161 expand_ref_prefix(&ref_prefixes, option_branch);
1162 if (!option_no_tags)
1163 argv_array_push(&ref_prefixes, "refs/tags/");
1164
1165 refs = transport_get_remote_refs(transport, &ref_prefixes);
8434c2f1 1166
5b05795c 1167 if (refs) {
515be833 1168 mapped_refs = wanted_peer_refs(refs, &remote->fetch);
5b05795c
MH
1169 /*
1170 * transport_get_remote_refs() may return refs with null sha-1
1171 * in mapped_refs (see struct transport->get_refs_list
1172 * comment). In that case we need fetch it early because
1173 * remote_head code below relies on it.
1174 *
1175 * for normal clones, transport_get_remote_refs() should
1176 * return reliable ref set, we can delay cloning until after
1177 * remote HEAD check.
1178 */
1179 for (ref = refs; ref; ref = ref->next)
f4e54d02 1180 if (is_null_oid(&ref->old_oid)) {
5b05795c
MH
1181 complete_refs_before_fetch = 0;
1182 break;
1183 }
90498161 1184
5b05795c 1185 if (!is_local && !complete_refs_before_fetch)
e2842b39 1186 transport_fetch_refs(transport, mapped_refs);
8434c2f1 1187
6cb4e6cc 1188 remote_head = find_ref_by_name(refs, "HEAD");
7a4ee28f
JK
1189 remote_head_points_at =
1190 guess_remote_head(remote_head, mapped_refs, 0);
1191
1192 if (option_branch) {
7a4ee28f 1193 our_head_points_at =
9e585046 1194 find_remote_branch(mapped_refs, option_branch);
7a4ee28f 1195
920b691f
NTND
1196 if (!our_head_points_at)
1197 die(_("Remote branch %s not found in upstream %s"),
1198 option_branch, option_origin);
7a4ee28f
JK
1199 }
1200 else
1201 our_head_points_at = remote_head_points_at;
86ac7518
SR
1202 }
1203 else {
a3552aba
RT
1204 if (option_branch)
1205 die(_("Remote branch %s not found in upstream %s"),
1206 option_branch, option_origin);
1207
e84d7b74 1208 warning(_("You appear to have cloned an empty repository."));
5b05795c 1209 mapped_refs = NULL;
7a4ee28f
JK
1210 our_head_points_at = NULL;
1211 remote_head_points_at = NULL;
86ac7518
SR
1212 remote_head = NULL;
1213 option_no_checkout = 1;
5cd12b85 1214 if (!option_bare)
a9f2c136 1215 install_branch_config(0, "master", option_origin,
5cd12b85 1216 "refs/heads/master");
86ac7518 1217 }
8434c2f1 1218
31b808a0
RT
1219 write_refspec_config(src_ref_prefix, our_head_points_at,
1220 remote_head_points_at, &branch_top);
1221
548719fb
JT
1222 if (filter_options.choice)
1223 partial_clone_register("origin", &filter_options);
1224
6f48d39f
NTND
1225 if (is_local)
1226 clone_local(path, git_dir);
90498161 1227 else if (refs && complete_refs_before_fetch)
e2842b39 1228 transport_fetch_refs(transport, mapped_refs);
8434c2f1 1229
960b7d1c 1230 update_remote_refs(refs, mapped_refs, remote_head_points_at,
548719fb 1231 branch_top.buf, reflog_msg.buf, transport,
a7e67c11 1232 !is_local);
8434c2f1 1233
f034d354 1234 update_head(our_head_points_at, remote_head, reflog_msg.buf);
1db4a75c 1235
72c5f883
JK
1236 /*
1237 * We want to show progress for recursive submodule clones iff
1238 * we did so for the main clone. But only the transport knows
1239 * the final decision for this flag, so we need to rescue the value
1240 * before we free the transport.
1241 */
1242 submodule_progress = transport->progress;
1243
6f48d39f
NTND
1244 transport_unlock_pack(transport);
1245 transport_disconnect(transport);
1db4a75c 1246
786b150c 1247 if (option_dissociate) {
d0b59866 1248 close_all_packs(the_repository->objects);
fb1d6dab 1249 dissociate_from_references();
786b150c 1250 }
fb1d6dab 1251
d3b34622 1252 junk_mode = JUNK_LEAVE_REPO;
548719fb 1253 fetch_if_missing = 1;
72c5f883 1254 err = checkout(submodule_progress);
8434c2f1
DB
1255
1256 strbuf_release(&reflog_msg);
b5ff37ac
MV
1257 strbuf_release(&branch_top);
1258 strbuf_release(&key);
3e42cb3b 1259 strbuf_release(&default_refspec);
d3b34622 1260 junk_mode = JUNK_LEAVE_ALL;
50b67732 1261
402c47d9 1262 argv_array_clear(&ref_prefixes);
dfa7a6c5 1263 return err;
8434c2f1 1264}