]>
Commit | Line | Data |
---|---|---|
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 | ||
11 | #include "cache.h" | |
12 | #include "parse-options.h" | |
13 | #include "fetch-pack.h" | |
14 | #include "refs.h" | |
15 | #include "tree.h" | |
16 | #include "tree-walk.h" | |
17 | #include "unpack-trees.h" | |
18 | #include "transport.h" | |
19 | #include "strbuf.h" | |
20 | #include "dir.h" | |
3e8aded2 | 21 | #include "pack-refs.h" |
4a16d072 | 22 | #include "sigchain.h" |
a9f2c136 | 23 | #include "branch.h" |
8ef51733 | 24 | #include "remote.h" |
dfa7a6c5 | 25 | #include "run-command.h" |
8434c2f1 DB |
26 | |
27 | /* | |
28 | * Overall FIXMEs: | |
29 | * - respect DB_ENVIRONMENT for .git/objects. | |
30 | * | |
31 | * Implementation notes: | |
32 | * - dropping use-separate-remote and no-separate-remote compatibility | |
33 | * | |
34 | */ | |
35 | static const char * const builtin_clone_usage[] = { | |
1b1dd23f | 36 | "git clone [options] [--] <repo> [<dir>]", |
8434c2f1 DB |
37 | NULL |
38 | }; | |
39 | ||
bc699afc | 40 | static int option_quiet, option_no_checkout, option_bare, option_mirror; |
8434c2f1 DB |
41 | static int option_local, option_no_hardlinks, option_shared; |
42 | static char *option_template, *option_reference, *option_depth; | |
43 | static char *option_origin = NULL; | |
44 | static char *option_upload_pack = "git-upload-pack"; | |
21188b1e | 45 | static int option_verbose; |
8434c2f1 DB |
46 | |
47 | static struct option builtin_clone_options[] = { | |
48 | OPT__QUIET(&option_quiet), | |
21188b1e | 49 | OPT__VERBOSE(&option_verbose), |
8434c2f1 DB |
50 | OPT_BOOLEAN('n', "no-checkout", &option_no_checkout, |
51 | "don't create a checkout"), | |
52 | OPT_BOOLEAN(0, "bare", &option_bare, "create a bare repository"), | |
53 | OPT_BOOLEAN(0, "naked", &option_bare, "create a bare repository"), | |
bc699afc JS |
54 | OPT_BOOLEAN(0, "mirror", &option_mirror, |
55 | "create a mirror repository (implies bare)"), | |
8434c2f1 DB |
56 | OPT_BOOLEAN('l', "local", &option_local, |
57 | "to clone from a local repository"), | |
58 | OPT_BOOLEAN(0, "no-hardlinks", &option_no_hardlinks, | |
59 | "don't use local hardlinks, always copy"), | |
60 | OPT_BOOLEAN('s', "shared", &option_shared, | |
61 | "setup as shared repository"), | |
62 | OPT_STRING(0, "template", &option_template, "path", | |
63 | "path the template repository"), | |
64 | OPT_STRING(0, "reference", &option_reference, "repo", | |
65 | "reference repository"), | |
66 | OPT_STRING('o', "origin", &option_origin, "branch", | |
02ed2458 | 67 | "use <branch> instead of 'origin' to track upstream"), |
8434c2f1 DB |
68 | OPT_STRING('u', "upload-pack", &option_upload_pack, "path", |
69 | "path to git-upload-pack on the remote"), | |
70 | OPT_STRING(0, "depth", &option_depth, "depth", | |
71 | "create a shallow clone of that depth"), | |
72 | ||
73 | OPT_END() | |
74 | }; | |
75 | ||
76 | static char *get_repo_path(const char *repo, int *is_bundle) | |
77 | { | |
78 | static char *suffix[] = { "/.git", ".git", "" }; | |
79 | static char *bundle_suffix[] = { ".bundle", "" }; | |
80 | struct stat st; | |
81 | int i; | |
82 | ||
83 | for (i = 0; i < ARRAY_SIZE(suffix); i++) { | |
84 | const char *path; | |
85 | path = mkpath("%s%s", repo, suffix[i]); | |
90b4a71c | 86 | if (is_directory(path)) { |
8434c2f1 | 87 | *is_bundle = 0; |
1b9a9467 | 88 | return xstrdup(make_nonrelative_path(path)); |
8434c2f1 DB |
89 | } |
90 | } | |
91 | ||
92 | for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) { | |
93 | const char *path; | |
94 | path = mkpath("%s%s", repo, bundle_suffix[i]); | |
95 | if (!stat(path, &st) && S_ISREG(st.st_mode)) { | |
96 | *is_bundle = 1; | |
1b9a9467 | 97 | return xstrdup(make_nonrelative_path(path)); |
8434c2f1 DB |
98 | } |
99 | } | |
100 | ||
101 | return NULL; | |
102 | } | |
103 | ||
6612f877 | 104 | static char *guess_dir_name(const char *repo, int is_bundle, int is_bare) |
8434c2f1 | 105 | { |
b8c5db35 | 106 | const char *end = repo + strlen(repo), *start; |
8a94bc7b | 107 | char *dir; |
b8c5db35 JS |
108 | |
109 | /* | |
8a94bc7b | 110 | * Strip trailing spaces, slashes and /.git |
b8c5db35 | 111 | */ |
8a94bc7b | 112 | while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1]))) |
b8c5db35 JS |
113 | end--; |
114 | if (end - repo > 5 && is_dir_sep(end[-5]) && | |
115 | !strncmp(end - 4, ".git", 4)) { | |
116 | end -= 5; | |
117 | while (repo < end && is_dir_sep(end[-1])) | |
118 | end--; | |
119 | } | |
120 | ||
121 | /* | |
122 | * Find last component, but be prepared that repo could have | |
123 | * the form "remote.example.com:foo.git", i.e. no slash | |
124 | * in the directory part. | |
125 | */ | |
126 | start = end; | |
127 | while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':') | |
128 | start--; | |
129 | ||
130 | /* | |
131 | * Strip .{bundle,git}. | |
132 | */ | |
133 | if (is_bundle) { | |
134 | if (end - start > 7 && !strncmp(end - 7, ".bundle", 7)) | |
135 | end -= 7; | |
136 | } else { | |
137 | if (end - start > 4 && !strncmp(end - 4, ".git", 4)) | |
138 | end -= 4; | |
8434c2f1 DB |
139 | } |
140 | ||
6612f877 | 141 | if (is_bare) { |
32716a2c MV |
142 | struct strbuf result = STRBUF_INIT; |
143 | strbuf_addf(&result, "%.*s.git", (int)(end - start), start); | |
2af202be | 144 | dir = strbuf_detach(&result, NULL); |
8a94bc7b AR |
145 | } else |
146 | dir = xstrndup(start, end - start); | |
147 | /* | |
148 | * Replace sequences of 'control' characters and whitespace | |
149 | * with one ascii space, remove leading and trailing spaces. | |
150 | */ | |
151 | if (*dir) { | |
152 | char *out = dir; | |
153 | int prev_space = 1 /* strip leading whitespace */; | |
154 | for (end = dir; *end; ++end) { | |
155 | char ch = *end; | |
156 | if ((unsigned char)ch < '\x20') | |
157 | ch = '\x20'; | |
158 | if (isspace(ch)) { | |
159 | if (prev_space) | |
160 | continue; | |
161 | prev_space = 1; | |
162 | } else | |
163 | prev_space = 0; | |
164 | *out++ = ch; | |
165 | } | |
166 | *out = '\0'; | |
167 | if (out > dir && prev_space) | |
168 | out[-1] = '\0'; | |
6612f877 | 169 | } |
8a94bc7b | 170 | return dir; |
8434c2f1 DB |
171 | } |
172 | ||
44a68fd5 CB |
173 | static void strip_trailing_slashes(char *dir) |
174 | { | |
175 | char *end = dir + strlen(dir); | |
176 | ||
177 | while (dir < end - 1 && is_dir_sep(end[-1])) | |
178 | end--; | |
179 | *end = '\0'; | |
180 | } | |
181 | ||
8434c2f1 DB |
182 | static void setup_reference(const char *repo) |
183 | { | |
184 | const char *ref_git; | |
185 | char *ref_git_copy; | |
186 | ||
187 | struct remote *remote; | |
188 | struct transport *transport; | |
189 | const struct ref *extra; | |
190 | ||
191 | ref_git = make_absolute_path(option_reference); | |
192 | ||
193 | if (is_directory(mkpath("%s/.git/objects", ref_git))) | |
194 | ref_git = mkpath("%s/.git", ref_git); | |
195 | else if (!is_directory(mkpath("%s/objects", ref_git))) | |
196 | die("reference repository '%s' is not a local directory.", | |
197 | option_reference); | |
198 | ||
199 | ref_git_copy = xstrdup(ref_git); | |
200 | ||
201 | add_to_alternates_file(ref_git_copy); | |
202 | ||
203 | remote = remote_get(ref_git_copy); | |
204 | transport = transport_get(remote, ref_git_copy); | |
205 | for (extra = transport_get_remote_refs(transport); extra; | |
206 | extra = extra->next) | |
207 | add_extra_ref(extra->name, extra->old_sha1, 0); | |
208 | ||
209 | transport_disconnect(transport); | |
210 | ||
211 | free(ref_git_copy); | |
212 | } | |
213 | ||
b9e125e0 | 214 | static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest) |
8434c2f1 DB |
215 | { |
216 | struct dirent *de; | |
217 | struct stat buf; | |
218 | int src_len, dest_len; | |
219 | DIR *dir; | |
220 | ||
b9e125e0 | 221 | dir = opendir(src->buf); |
8434c2f1 | 222 | if (!dir) |
0721c314 | 223 | die_errno("failed to open '%s'", src->buf); |
8434c2f1 | 224 | |
b9e125e0 | 225 | if (mkdir(dest->buf, 0777)) { |
8434c2f1 | 226 | if (errno != EEXIST) |
0721c314 | 227 | die_errno("failed to create directory '%s'", dest->buf); |
b9e125e0 | 228 | else if (stat(dest->buf, &buf)) |
0721c314 | 229 | die_errno("failed to stat '%s'", dest->buf); |
8434c2f1 | 230 | else if (!S_ISDIR(buf.st_mode)) |
d7530708 | 231 | die("%s exists and is not a directory", dest->buf); |
8434c2f1 DB |
232 | } |
233 | ||
b9e125e0 MV |
234 | strbuf_addch(src, '/'); |
235 | src_len = src->len; | |
236 | strbuf_addch(dest, '/'); | |
237 | dest_len = dest->len; | |
8434c2f1 DB |
238 | |
239 | while ((de = readdir(dir)) != NULL) { | |
b9e125e0 MV |
240 | strbuf_setlen(src, src_len); |
241 | strbuf_addstr(src, de->d_name); | |
242 | strbuf_setlen(dest, dest_len); | |
243 | strbuf_addstr(dest, de->d_name); | |
244 | if (stat(src->buf, &buf)) { | |
245 | warning ("failed to stat %s\n", src->buf); | |
8434c2f1 DB |
246 | continue; |
247 | } | |
248 | if (S_ISDIR(buf.st_mode)) { | |
249 | if (de->d_name[0] != '.') | |
250 | copy_or_link_directory(src, dest); | |
251 | continue; | |
252 | } | |
253 | ||
b9e125e0 | 254 | if (unlink(dest->buf) && errno != ENOENT) |
d824cbba | 255 | die_errno("failed to unlink '%s'", dest->buf); |
fdabc242 | 256 | if (!option_no_hardlinks) { |
b9e125e0 | 257 | if (!link(src->buf, dest->buf)) |
fdabc242 DB |
258 | continue; |
259 | if (option_local) | |
0721c314 | 260 | die_errno("failed to create link '%s'", dest->buf); |
fdabc242 | 261 | option_no_hardlinks = 1; |
8434c2f1 | 262 | } |
b9e125e0 | 263 | if (copy_file(dest->buf, src->buf, 0666)) |
0721c314 | 264 | die_errno("failed to copy file to '%s'", dest->buf); |
8434c2f1 | 265 | } |
689ef4d4 | 266 | closedir(dir); |
8434c2f1 DB |
267 | } |
268 | ||
269 | static const struct ref *clone_local(const char *src_repo, | |
270 | const char *dest_repo) | |
271 | { | |
272 | const struct ref *ret; | |
b9e125e0 MV |
273 | struct strbuf src = STRBUF_INIT; |
274 | struct strbuf dest = STRBUF_INIT; | |
8434c2f1 DB |
275 | struct remote *remote; |
276 | struct transport *transport; | |
277 | ||
278 | if (option_shared) | |
279 | add_to_alternates_file(src_repo); | |
280 | else { | |
b9e125e0 MV |
281 | strbuf_addf(&src, "%s/objects", src_repo); |
282 | strbuf_addf(&dest, "%s/objects", dest_repo); | |
283 | copy_or_link_directory(&src, &dest); | |
284 | strbuf_release(&src); | |
285 | strbuf_release(&dest); | |
8434c2f1 DB |
286 | } |
287 | ||
288 | remote = remote_get(src_repo); | |
289 | transport = transport_get(remote, src_repo); | |
290 | ret = transport_get_remote_refs(transport); | |
291 | transport_disconnect(transport); | |
292 | return ret; | |
293 | } | |
294 | ||
295 | static const char *junk_work_tree; | |
296 | static const char *junk_git_dir; | |
e161acd1 | 297 | static pid_t junk_pid; |
8434c2f1 DB |
298 | |
299 | static void remove_junk(void) | |
300 | { | |
f285a2d7 | 301 | struct strbuf sb = STRBUF_INIT; |
8434c2f1 DB |
302 | if (getpid() != junk_pid) |
303 | return; | |
8434c2f1 DB |
304 | if (junk_git_dir) { |
305 | strbuf_addstr(&sb, junk_git_dir); | |
306 | remove_dir_recursively(&sb, 0); | |
307 | strbuf_reset(&sb); | |
308 | } | |
309 | if (junk_work_tree) { | |
310 | strbuf_addstr(&sb, junk_work_tree); | |
311 | remove_dir_recursively(&sb, 0); | |
312 | strbuf_reset(&sb); | |
313 | } | |
314 | } | |
315 | ||
316 | static void remove_junk_on_signal(int signo) | |
317 | { | |
318 | remove_junk(); | |
4a16d072 | 319 | sigchain_pop(signo); |
8434c2f1 DB |
320 | raise(signo); |
321 | } | |
322 | ||
8434c2f1 DB |
323 | static struct ref *write_remote_refs(const struct ref *refs, |
324 | struct refspec *refspec, const char *reflog) | |
325 | { | |
326 | struct ref *local_refs = NULL; | |
327 | struct ref **tail = &local_refs; | |
328 | struct ref *r; | |
329 | ||
330 | get_fetch_map(refs, refspec, &tail, 0); | |
468386a9 JS |
331 | if (!option_mirror) |
332 | get_fetch_map(refs, tag_refspec, &tail, 0); | |
8434c2f1 DB |
333 | |
334 | for (r = local_refs; r; r = r->next) | |
3e8aded2 JH |
335 | add_extra_ref(r->peer_ref->name, r->old_sha1, 0); |
336 | ||
337 | pack_refs(PACK_REFS_ALL); | |
338 | clear_extra_refs(); | |
339 | ||
8434c2f1 DB |
340 | return local_refs; |
341 | } | |
342 | ||
343 | int cmd_clone(int argc, const char **argv, const char *prefix) | |
344 | { | |
8434c2f1 DB |
345 | int is_bundle = 0; |
346 | struct stat buf; | |
347 | const char *repo_name, *repo, *work_tree, *git_dir; | |
348 | char *path, *dir; | |
55892d23 | 349 | int dest_exists; |
8434c2f1 | 350 | const struct ref *refs, *head_points_at, *remote_head, *mapped_refs; |
b5ff37ac MV |
351 | struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; |
352 | struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; | |
1db4a75c | 353 | struct transport *transport = NULL; |
bc699afc | 354 | char *src_ref_prefix = "refs/heads/"; |
dfa7a6c5 | 355 | int err = 0; |
8434c2f1 | 356 | |
689f0396 DB |
357 | struct refspec *refspec; |
358 | const char *fetch_pattern; | |
8434c2f1 DB |
359 | |
360 | junk_pid = getpid(); | |
361 | ||
37782920 | 362 | argc = parse_options(argc, argv, prefix, builtin_clone_options, |
8434c2f1 DB |
363 | builtin_clone_usage, 0); |
364 | ||
365 | if (argc == 0) | |
366 | die("You must specify a repository to clone."); | |
367 | ||
bc699afc JS |
368 | if (option_mirror) |
369 | option_bare = 1; | |
370 | ||
8434c2f1 DB |
371 | if (option_bare) { |
372 | if (option_origin) | |
373 | die("--bare and --origin %s options are incompatible.", | |
374 | option_origin); | |
375 | option_no_checkout = 1; | |
8434c2f1 DB |
376 | } |
377 | ||
378 | if (!option_origin) | |
379 | option_origin = "origin"; | |
380 | ||
381 | repo_name = argv[0]; | |
382 | ||
383 | path = get_repo_path(repo_name, &is_bundle); | |
384 | if (path) | |
86521aca | 385 | repo = xstrdup(make_nonrelative_path(repo_name)); |
8434c2f1 DB |
386 | else if (!strchr(repo_name, ':')) |
387 | repo = xstrdup(make_absolute_path(repo_name)); | |
388 | else | |
389 | repo = repo_name; | |
390 | ||
391 | if (argc == 2) | |
392 | dir = xstrdup(argv[1]); | |
393 | else | |
6612f877 | 394 | dir = guess_dir_name(repo_name, is_bundle, option_bare); |
44a68fd5 | 395 | strip_trailing_slashes(dir); |
8434c2f1 | 396 | |
55892d23 AP |
397 | dest_exists = !stat(dir, &buf); |
398 | if (dest_exists && !is_empty_dir(dir)) | |
399 | die("destination path '%s' already exists and is not " | |
400 | "an empty directory.", dir); | |
8434c2f1 | 401 | |
8434c2f1 DB |
402 | strbuf_addf(&reflog_msg, "clone: from %s", repo); |
403 | ||
404 | if (option_bare) | |
405 | work_tree = NULL; | |
406 | else { | |
407 | work_tree = getenv("GIT_WORK_TREE"); | |
408 | if (work_tree && !stat(work_tree, &buf)) | |
409 | die("working tree '%s' already exists.", work_tree); | |
410 | } | |
411 | ||
412 | if (option_bare || work_tree) | |
413 | git_dir = xstrdup(dir); | |
414 | else { | |
415 | work_tree = dir; | |
416 | git_dir = xstrdup(mkpath("%s/.git", dir)); | |
417 | } | |
418 | ||
419 | if (!option_bare) { | |
420 | junk_work_tree = work_tree; | |
8e21d63b | 421 | if (safe_create_leading_directories_const(work_tree) < 0) |
d824cbba TR |
422 | die_errno("could not create leading directories of '%s'", |
423 | work_tree); | |
55892d23 | 424 | if (!dest_exists && mkdir(work_tree, 0755)) |
d824cbba TR |
425 | die_errno("could not create work tree dir '%s'.", |
426 | work_tree); | |
8434c2f1 DB |
427 | set_git_work_tree(work_tree); |
428 | } | |
429 | junk_git_dir = git_dir; | |
430 | atexit(remove_junk); | |
57b235a4 | 431 | sigchain_push_common(remove_junk_on_signal); |
8434c2f1 | 432 | |
50b5f420 | 433 | setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1); |
8434c2f1 | 434 | |
8e21d63b JK |
435 | if (safe_create_leading_directories_const(git_dir) < 0) |
436 | die("could not create leading directories of '%s'", git_dir); | |
8434c2f1 DB |
437 | set_git_dir(make_absolute_path(git_dir)); |
438 | ||
8434c2f1 DB |
439 | init_db(option_template, option_quiet ? INIT_DB_QUIET : 0); |
440 | ||
5b8063b5 JS |
441 | /* |
442 | * At this point, the config exists, so we do not need the | |
443 | * environment variable. We actually need to unset it, too, to | |
444 | * re-enable parsing of the global configs. | |
445 | */ | |
446 | unsetenv(CONFIG_ENVIRONMENT); | |
447 | ||
8434c2f1 DB |
448 | if (option_reference) |
449 | setup_reference(git_dir); | |
450 | ||
9bd81e42 | 451 | git_config(git_default_config, NULL); |
8434c2f1 DB |
452 | |
453 | if (option_bare) { | |
bc699afc JS |
454 | if (option_mirror) |
455 | src_ref_prefix = "refs/"; | |
b5ff37ac | 456 | strbuf_addstr(&branch_top, src_ref_prefix); |
8434c2f1 DB |
457 | |
458 | git_config_set("core.bare", "true"); | |
459 | } else { | |
b5ff37ac | 460 | strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin); |
bc699afc | 461 | } |
8434c2f1 | 462 | |
689f0396 DB |
463 | strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf); |
464 | ||
bc699afc | 465 | if (option_mirror || !option_bare) { |
8434c2f1 | 466 | /* Configure the remote */ |
689f0396 DB |
467 | strbuf_addf(&key, "remote.%s.fetch", option_origin); |
468 | git_config_set_multivar(key.buf, value.buf, "^$", 0); | |
469 | strbuf_reset(&key); | |
470 | ||
bc699afc | 471 | if (option_mirror) { |
b5ff37ac MV |
472 | strbuf_addf(&key, "remote.%s.mirror", option_origin); |
473 | git_config_set(key.buf, "true"); | |
474 | strbuf_reset(&key); | |
bc699afc JS |
475 | } |
476 | ||
b5ff37ac MV |
477 | strbuf_addf(&key, "remote.%s.url", option_origin); |
478 | git_config_set(key.buf, repo); | |
b5ff37ac | 479 | strbuf_reset(&key); |
8434c2f1 DB |
480 | } |
481 | ||
689f0396 DB |
482 | fetch_pattern = value.buf; |
483 | refspec = parse_fetch_refspec(1, &fetch_pattern); | |
484 | ||
485 | strbuf_reset(&value); | |
8434c2f1 DB |
486 | |
487 | if (path && !is_bundle) | |
488 | refs = clone_local(path, git_dir); | |
489 | else { | |
490 | struct remote *remote = remote_get(argv[0]); | |
1db4a75c | 491 | transport = transport_get(remote, remote->url[0]); |
8434c2f1 | 492 | |
37b78c25 JK |
493 | if (!transport->get_refs_list || !transport->fetch) |
494 | die("Don't know how to clone %s", transport->url); | |
495 | ||
8434c2f1 DB |
496 | transport_set_option(transport, TRANS_OPT_KEEP, "yes"); |
497 | ||
498 | if (option_depth) | |
499 | transport_set_option(transport, TRANS_OPT_DEPTH, | |
500 | option_depth); | |
501 | ||
502 | if (option_quiet) | |
503 | transport->verbose = -1; | |
21188b1e MV |
504 | else if (option_verbose) |
505 | transport->progress = 1; | |
8434c2f1 | 506 | |
837c8767 SH |
507 | if (option_upload_pack) |
508 | transport_set_option(transport, TRANS_OPT_UPLOADPACK, | |
509 | option_upload_pack); | |
510 | ||
8434c2f1 | 511 | refs = transport_get_remote_refs(transport); |
86ac7518 SR |
512 | if(refs) |
513 | transport_fetch_refs(transport, refs); | |
8434c2f1 DB |
514 | } |
515 | ||
86ac7518 SR |
516 | if (refs) { |
517 | clear_extra_refs(); | |
8434c2f1 | 518 | |
689f0396 | 519 | mapped_refs = write_remote_refs(refs, refspec, reflog_msg.buf); |
8434c2f1 | 520 | |
6cb4e6cc | 521 | remote_head = find_ref_by_name(refs, "HEAD"); |
4229f1fa | 522 | head_points_at = guess_remote_head(remote_head, mapped_refs, 0); |
86ac7518 SR |
523 | } |
524 | else { | |
525 | warning("You appear to have cloned an empty repository."); | |
526 | head_points_at = NULL; | |
527 | remote_head = NULL; | |
528 | option_no_checkout = 1; | |
5cd12b85 | 529 | if (!option_bare) |
a9f2c136 | 530 | install_branch_config(0, "master", option_origin, |
5cd12b85 | 531 | "refs/heads/master"); |
86ac7518 | 532 | } |
8434c2f1 DB |
533 | |
534 | if (head_points_at) { | |
535 | /* Local default branch link */ | |
536 | create_symref("HEAD", head_points_at->name, NULL); | |
537 | ||
538 | if (!option_bare) { | |
f285a2d7 | 539 | struct strbuf head_ref = STRBUF_INIT; |
8434c2f1 DB |
540 | const char *head = head_points_at->name; |
541 | ||
542 | if (!prefixcmp(head, "refs/heads/")) | |
543 | head += 11; | |
544 | ||
545 | /* Set up the initial local branch */ | |
546 | ||
547 | /* Local branch initial value */ | |
548 | update_ref(reflog_msg.buf, "HEAD", | |
549 | head_points_at->old_sha1, | |
550 | NULL, 0, DIE_ON_ERR); | |
551 | ||
b5ff37ac | 552 | strbuf_addstr(&head_ref, branch_top.buf); |
8434c2f1 DB |
553 | strbuf_addstr(&head_ref, "HEAD"); |
554 | ||
555 | /* Remote branch link */ | |
556 | create_symref(head_ref.buf, | |
557 | head_points_at->peer_ref->name, | |
558 | reflog_msg.buf); | |
559 | ||
a9f2c136 | 560 | install_branch_config(0, head, option_origin, |
5cd12b85 | 561 | head_points_at->name); |
8434c2f1 DB |
562 | } |
563 | } else if (remote_head) { | |
564 | /* Source had detached HEAD pointing somewhere. */ | |
565 | if (!option_bare) | |
566 | update_ref(reflog_msg.buf, "HEAD", | |
567 | remote_head->old_sha1, | |
568 | NULL, REF_NODEREF, DIE_ON_ERR); | |
569 | } else { | |
570 | /* Nothing to checkout out */ | |
571 | if (!option_no_checkout) | |
572 | warning("remote HEAD refers to nonexistent ref, " | |
573 | "unable to checkout.\n"); | |
574 | option_no_checkout = 1; | |
575 | } | |
576 | ||
1db4a75c SP |
577 | if (transport) |
578 | transport_unlock_pack(transport); | |
579 | ||
8434c2f1 DB |
580 | if (!option_no_checkout) { |
581 | struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); | |
582 | struct unpack_trees_options opts; | |
583 | struct tree *tree; | |
584 | struct tree_desc t; | |
585 | int fd; | |
586 | ||
587 | /* We need to be in the new work tree for the checkout */ | |
588 | setup_work_tree(); | |
589 | ||
590 | fd = hold_locked_index(lock_file, 1); | |
591 | ||
592 | memset(&opts, 0, sizeof opts); | |
593 | opts.update = 1; | |
a73bc127 JS |
594 | opts.merge = 1; |
595 | opts.fn = oneway_merge; | |
8434c2f1 | 596 | opts.verbose_update = !option_quiet; |
a73bc127 | 597 | opts.src_index = &the_index; |
8434c2f1 DB |
598 | opts.dst_index = &the_index; |
599 | ||
600 | tree = parse_tree_indirect(remote_head->old_sha1); | |
601 | parse_tree(tree); | |
602 | init_tree_desc(&t, tree->buffer, tree->size); | |
603 | unpack_trees(1, &t, &opts); | |
604 | ||
605 | if (write_cache(fd, active_cache, active_nr) || | |
606 | commit_locked_index(lock_file)) | |
607 | die("unable to write new index file"); | |
dfa7a6c5 JK |
608 | |
609 | err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1), | |
610 | sha1_to_hex(remote_head->old_sha1), "1", NULL); | |
8434c2f1 DB |
611 | } |
612 | ||
613 | strbuf_release(&reflog_msg); | |
b5ff37ac MV |
614 | strbuf_release(&branch_top); |
615 | strbuf_release(&key); | |
616 | strbuf_release(&value); | |
8434c2f1 | 617 | junk_pid = 0; |
dfa7a6c5 | 618 | return err; |
8434c2f1 | 619 | } |