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Commit | Line | Data |
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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; |
e7fed18a | 41 | static int option_local, option_no_hardlinks, option_shared, option_recursive; |
8434c2f1 DB |
42 | static char *option_template, *option_reference, *option_depth; |
43 | static char *option_origin = NULL; | |
7a4ee28f | 44 | static char *option_branch = NULL; |
8434c2f1 | 45 | static char *option_upload_pack = "git-upload-pack"; |
21188b1e | 46 | static int option_verbose; |
8434c2f1 DB |
47 | |
48 | static struct option builtin_clone_options[] = { | |
49 | OPT__QUIET(&option_quiet), | |
21188b1e | 50 | OPT__VERBOSE(&option_verbose), |
8434c2f1 DB |
51 | OPT_BOOLEAN('n', "no-checkout", &option_no_checkout, |
52 | "don't create a checkout"), | |
53 | OPT_BOOLEAN(0, "bare", &option_bare, "create a bare repository"), | |
54 | OPT_BOOLEAN(0, "naked", &option_bare, "create a bare repository"), | |
bc699afc JS |
55 | OPT_BOOLEAN(0, "mirror", &option_mirror, |
56 | "create a mirror repository (implies bare)"), | |
8434c2f1 DB |
57 | OPT_BOOLEAN('l', "local", &option_local, |
58 | "to clone from a local repository"), | |
59 | OPT_BOOLEAN(0, "no-hardlinks", &option_no_hardlinks, | |
60 | "don't use local hardlinks, always copy"), | |
61 | OPT_BOOLEAN('s', "shared", &option_shared, | |
62 | "setup as shared repository"), | |
e7fed18a JH |
63 | OPT_BOOLEAN(0, "recursive", &option_recursive, |
64 | "setup as shared repository"), | |
8434c2f1 DB |
65 | OPT_STRING(0, "template", &option_template, "path", |
66 | "path the template repository"), | |
67 | OPT_STRING(0, "reference", &option_reference, "repo", | |
68 | "reference repository"), | |
69 | OPT_STRING('o', "origin", &option_origin, "branch", | |
02ed2458 | 70 | "use <branch> instead of 'origin' to track upstream"), |
7a4ee28f JK |
71 | OPT_STRING('b', "branch", &option_branch, "branch", |
72 | "checkout <branch> instead of the remote's HEAD"), | |
8434c2f1 DB |
73 | OPT_STRING('u', "upload-pack", &option_upload_pack, "path", |
74 | "path to git-upload-pack on the remote"), | |
75 | OPT_STRING(0, "depth", &option_depth, "depth", | |
76 | "create a shallow clone of that depth"), | |
77 | ||
78 | OPT_END() | |
79 | }; | |
80 | ||
e7fed18a JH |
81 | static const char *argv_submodule[] = { |
82 | "submodule", "update", "--init", "--recursive", NULL | |
83 | }; | |
84 | ||
8434c2f1 DB |
85 | static char *get_repo_path(const char *repo, int *is_bundle) |
86 | { | |
87 | static char *suffix[] = { "/.git", ".git", "" }; | |
88 | static char *bundle_suffix[] = { ".bundle", "" }; | |
89 | struct stat st; | |
90 | int i; | |
91 | ||
92 | for (i = 0; i < ARRAY_SIZE(suffix); i++) { | |
93 | const char *path; | |
94 | path = mkpath("%s%s", repo, suffix[i]); | |
90b4a71c | 95 | if (is_directory(path)) { |
8434c2f1 | 96 | *is_bundle = 0; |
1b9a9467 | 97 | return xstrdup(make_nonrelative_path(path)); |
8434c2f1 DB |
98 | } |
99 | } | |
100 | ||
101 | for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) { | |
102 | const char *path; | |
103 | path = mkpath("%s%s", repo, bundle_suffix[i]); | |
104 | if (!stat(path, &st) && S_ISREG(st.st_mode)) { | |
105 | *is_bundle = 1; | |
1b9a9467 | 106 | return xstrdup(make_nonrelative_path(path)); |
8434c2f1 DB |
107 | } |
108 | } | |
109 | ||
110 | return NULL; | |
111 | } | |
112 | ||
6612f877 | 113 | static char *guess_dir_name(const char *repo, int is_bundle, int is_bare) |
8434c2f1 | 114 | { |
b8c5db35 | 115 | const char *end = repo + strlen(repo), *start; |
8a94bc7b | 116 | char *dir; |
b8c5db35 JS |
117 | |
118 | /* | |
8a94bc7b | 119 | * Strip trailing spaces, slashes and /.git |
b8c5db35 | 120 | */ |
8a94bc7b | 121 | while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1]))) |
b8c5db35 JS |
122 | end--; |
123 | if (end - repo > 5 && is_dir_sep(end[-5]) && | |
124 | !strncmp(end - 4, ".git", 4)) { | |
125 | end -= 5; | |
126 | while (repo < end && is_dir_sep(end[-1])) | |
127 | end--; | |
128 | } | |
129 | ||
130 | /* | |
131 | * Find last component, but be prepared that repo could have | |
132 | * the form "remote.example.com:foo.git", i.e. no slash | |
133 | * in the directory part. | |
134 | */ | |
135 | start = end; | |
136 | while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':') | |
137 | start--; | |
138 | ||
139 | /* | |
140 | * Strip .{bundle,git}. | |
141 | */ | |
142 | if (is_bundle) { | |
143 | if (end - start > 7 && !strncmp(end - 7, ".bundle", 7)) | |
144 | end -= 7; | |
145 | } else { | |
146 | if (end - start > 4 && !strncmp(end - 4, ".git", 4)) | |
147 | end -= 4; | |
8434c2f1 DB |
148 | } |
149 | ||
6612f877 | 150 | if (is_bare) { |
32716a2c MV |
151 | struct strbuf result = STRBUF_INIT; |
152 | strbuf_addf(&result, "%.*s.git", (int)(end - start), start); | |
2af202be | 153 | dir = strbuf_detach(&result, NULL); |
8a94bc7b AR |
154 | } else |
155 | dir = xstrndup(start, end - start); | |
156 | /* | |
157 | * Replace sequences of 'control' characters and whitespace | |
158 | * with one ascii space, remove leading and trailing spaces. | |
159 | */ | |
160 | if (*dir) { | |
161 | char *out = dir; | |
162 | int prev_space = 1 /* strip leading whitespace */; | |
163 | for (end = dir; *end; ++end) { | |
164 | char ch = *end; | |
165 | if ((unsigned char)ch < '\x20') | |
166 | ch = '\x20'; | |
167 | if (isspace(ch)) { | |
168 | if (prev_space) | |
169 | continue; | |
170 | prev_space = 1; | |
171 | } else | |
172 | prev_space = 0; | |
173 | *out++ = ch; | |
174 | } | |
175 | *out = '\0'; | |
176 | if (out > dir && prev_space) | |
177 | out[-1] = '\0'; | |
6612f877 | 178 | } |
8a94bc7b | 179 | return dir; |
8434c2f1 DB |
180 | } |
181 | ||
44a68fd5 CB |
182 | static void strip_trailing_slashes(char *dir) |
183 | { | |
184 | char *end = dir + strlen(dir); | |
185 | ||
186 | while (dir < end - 1 && is_dir_sep(end[-1])) | |
187 | end--; | |
188 | *end = '\0'; | |
189 | } | |
190 | ||
8434c2f1 DB |
191 | static void setup_reference(const char *repo) |
192 | { | |
193 | const char *ref_git; | |
194 | char *ref_git_copy; | |
195 | ||
196 | struct remote *remote; | |
197 | struct transport *transport; | |
198 | const struct ref *extra; | |
199 | ||
200 | ref_git = make_absolute_path(option_reference); | |
201 | ||
202 | if (is_directory(mkpath("%s/.git/objects", ref_git))) | |
203 | ref_git = mkpath("%s/.git", ref_git); | |
204 | else if (!is_directory(mkpath("%s/objects", ref_git))) | |
205 | die("reference repository '%s' is not a local directory.", | |
206 | option_reference); | |
207 | ||
208 | ref_git_copy = xstrdup(ref_git); | |
209 | ||
210 | add_to_alternates_file(ref_git_copy); | |
211 | ||
212 | remote = remote_get(ref_git_copy); | |
213 | transport = transport_get(remote, ref_git_copy); | |
214 | for (extra = transport_get_remote_refs(transport); extra; | |
215 | extra = extra->next) | |
216 | add_extra_ref(extra->name, extra->old_sha1, 0); | |
217 | ||
218 | transport_disconnect(transport); | |
219 | ||
220 | free(ref_git_copy); | |
221 | } | |
222 | ||
b9e125e0 | 223 | static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest) |
8434c2f1 DB |
224 | { |
225 | struct dirent *de; | |
226 | struct stat buf; | |
227 | int src_len, dest_len; | |
228 | DIR *dir; | |
229 | ||
b9e125e0 | 230 | dir = opendir(src->buf); |
8434c2f1 | 231 | if (!dir) |
0721c314 | 232 | die_errno("failed to open '%s'", src->buf); |
8434c2f1 | 233 | |
b9e125e0 | 234 | if (mkdir(dest->buf, 0777)) { |
8434c2f1 | 235 | if (errno != EEXIST) |
0721c314 | 236 | die_errno("failed to create directory '%s'", dest->buf); |
b9e125e0 | 237 | else if (stat(dest->buf, &buf)) |
0721c314 | 238 | die_errno("failed to stat '%s'", dest->buf); |
8434c2f1 | 239 | else if (!S_ISDIR(buf.st_mode)) |
d7530708 | 240 | die("%s exists and is not a directory", dest->buf); |
8434c2f1 DB |
241 | } |
242 | ||
b9e125e0 MV |
243 | strbuf_addch(src, '/'); |
244 | src_len = src->len; | |
245 | strbuf_addch(dest, '/'); | |
246 | dest_len = dest->len; | |
8434c2f1 DB |
247 | |
248 | while ((de = readdir(dir)) != NULL) { | |
b9e125e0 MV |
249 | strbuf_setlen(src, src_len); |
250 | strbuf_addstr(src, de->d_name); | |
251 | strbuf_setlen(dest, dest_len); | |
252 | strbuf_addstr(dest, de->d_name); | |
253 | if (stat(src->buf, &buf)) { | |
254 | warning ("failed to stat %s\n", src->buf); | |
8434c2f1 DB |
255 | continue; |
256 | } | |
257 | if (S_ISDIR(buf.st_mode)) { | |
258 | if (de->d_name[0] != '.') | |
259 | copy_or_link_directory(src, dest); | |
260 | continue; | |
261 | } | |
262 | ||
b9e125e0 | 263 | if (unlink(dest->buf) && errno != ENOENT) |
d824cbba | 264 | die_errno("failed to unlink '%s'", dest->buf); |
fdabc242 | 265 | if (!option_no_hardlinks) { |
b9e125e0 | 266 | if (!link(src->buf, dest->buf)) |
fdabc242 DB |
267 | continue; |
268 | if (option_local) | |
0721c314 | 269 | die_errno("failed to create link '%s'", dest->buf); |
fdabc242 | 270 | option_no_hardlinks = 1; |
8434c2f1 | 271 | } |
b9e125e0 | 272 | if (copy_file(dest->buf, src->buf, 0666)) |
0721c314 | 273 | die_errno("failed to copy file to '%s'", dest->buf); |
8434c2f1 | 274 | } |
689ef4d4 | 275 | closedir(dir); |
8434c2f1 DB |
276 | } |
277 | ||
278 | static const struct ref *clone_local(const char *src_repo, | |
279 | const char *dest_repo) | |
280 | { | |
281 | const struct ref *ret; | |
b9e125e0 MV |
282 | struct strbuf src = STRBUF_INIT; |
283 | struct strbuf dest = STRBUF_INIT; | |
8434c2f1 DB |
284 | struct remote *remote; |
285 | struct transport *transport; | |
286 | ||
287 | if (option_shared) | |
288 | add_to_alternates_file(src_repo); | |
289 | else { | |
b9e125e0 MV |
290 | strbuf_addf(&src, "%s/objects", src_repo); |
291 | strbuf_addf(&dest, "%s/objects", dest_repo); | |
292 | copy_or_link_directory(&src, &dest); | |
293 | strbuf_release(&src); | |
294 | strbuf_release(&dest); | |
8434c2f1 DB |
295 | } |
296 | ||
297 | remote = remote_get(src_repo); | |
298 | transport = transport_get(remote, src_repo); | |
299 | ret = transport_get_remote_refs(transport); | |
300 | transport_disconnect(transport); | |
301 | return ret; | |
302 | } | |
303 | ||
304 | static const char *junk_work_tree; | |
305 | static const char *junk_git_dir; | |
e161acd1 | 306 | static pid_t junk_pid; |
8434c2f1 DB |
307 | |
308 | static void remove_junk(void) | |
309 | { | |
f285a2d7 | 310 | struct strbuf sb = STRBUF_INIT; |
8434c2f1 DB |
311 | if (getpid() != junk_pid) |
312 | return; | |
8434c2f1 DB |
313 | if (junk_git_dir) { |
314 | strbuf_addstr(&sb, junk_git_dir); | |
315 | remove_dir_recursively(&sb, 0); | |
316 | strbuf_reset(&sb); | |
317 | } | |
318 | if (junk_work_tree) { | |
319 | strbuf_addstr(&sb, junk_work_tree); | |
320 | remove_dir_recursively(&sb, 0); | |
321 | strbuf_reset(&sb); | |
322 | } | |
323 | } | |
324 | ||
325 | static void remove_junk_on_signal(int signo) | |
326 | { | |
327 | remove_junk(); | |
4a16d072 | 328 | sigchain_pop(signo); |
8434c2f1 DB |
329 | raise(signo); |
330 | } | |
331 | ||
8434c2f1 DB |
332 | static struct ref *write_remote_refs(const struct ref *refs, |
333 | struct refspec *refspec, const char *reflog) | |
334 | { | |
335 | struct ref *local_refs = NULL; | |
336 | struct ref **tail = &local_refs; | |
337 | struct ref *r; | |
338 | ||
339 | get_fetch_map(refs, refspec, &tail, 0); | |
468386a9 JS |
340 | if (!option_mirror) |
341 | get_fetch_map(refs, tag_refspec, &tail, 0); | |
8434c2f1 DB |
342 | |
343 | for (r = local_refs; r; r = r->next) | |
3e8aded2 JH |
344 | add_extra_ref(r->peer_ref->name, r->old_sha1, 0); |
345 | ||
346 | pack_refs(PACK_REFS_ALL); | |
347 | clear_extra_refs(); | |
348 | ||
8434c2f1 DB |
349 | return local_refs; |
350 | } | |
351 | ||
352 | int cmd_clone(int argc, const char **argv, const char *prefix) | |
353 | { | |
8434c2f1 DB |
354 | int is_bundle = 0; |
355 | struct stat buf; | |
356 | const char *repo_name, *repo, *work_tree, *git_dir; | |
357 | char *path, *dir; | |
55892d23 | 358 | int dest_exists; |
7a4ee28f JK |
359 | const struct ref *refs, *remote_head, *mapped_refs; |
360 | const struct ref *remote_head_points_at; | |
361 | const struct ref *our_head_points_at; | |
b5ff37ac MV |
362 | struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; |
363 | struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; | |
1db4a75c | 364 | struct transport *transport = NULL; |
bc699afc | 365 | char *src_ref_prefix = "refs/heads/"; |
dfa7a6c5 | 366 | int err = 0; |
8434c2f1 | 367 | |
689f0396 DB |
368 | struct refspec *refspec; |
369 | const char *fetch_pattern; | |
8434c2f1 DB |
370 | |
371 | junk_pid = getpid(); | |
372 | ||
37782920 | 373 | argc = parse_options(argc, argv, prefix, builtin_clone_options, |
8434c2f1 DB |
374 | builtin_clone_usage, 0); |
375 | ||
376 | if (argc == 0) | |
377 | die("You must specify a repository to clone."); | |
378 | ||
bc699afc JS |
379 | if (option_mirror) |
380 | option_bare = 1; | |
381 | ||
8434c2f1 DB |
382 | if (option_bare) { |
383 | if (option_origin) | |
384 | die("--bare and --origin %s options are incompatible.", | |
385 | option_origin); | |
386 | option_no_checkout = 1; | |
8434c2f1 DB |
387 | } |
388 | ||
389 | if (!option_origin) | |
390 | option_origin = "origin"; | |
391 | ||
392 | repo_name = argv[0]; | |
393 | ||
394 | path = get_repo_path(repo_name, &is_bundle); | |
395 | if (path) | |
86521aca | 396 | repo = xstrdup(make_nonrelative_path(repo_name)); |
8434c2f1 DB |
397 | else if (!strchr(repo_name, ':')) |
398 | repo = xstrdup(make_absolute_path(repo_name)); | |
399 | else | |
400 | repo = repo_name; | |
401 | ||
402 | if (argc == 2) | |
403 | dir = xstrdup(argv[1]); | |
404 | else | |
6612f877 | 405 | dir = guess_dir_name(repo_name, is_bundle, option_bare); |
44a68fd5 | 406 | strip_trailing_slashes(dir); |
8434c2f1 | 407 | |
55892d23 AP |
408 | dest_exists = !stat(dir, &buf); |
409 | if (dest_exists && !is_empty_dir(dir)) | |
410 | die("destination path '%s' already exists and is not " | |
411 | "an empty directory.", dir); | |
8434c2f1 | 412 | |
8434c2f1 DB |
413 | strbuf_addf(&reflog_msg, "clone: from %s", repo); |
414 | ||
415 | if (option_bare) | |
416 | work_tree = NULL; | |
417 | else { | |
418 | work_tree = getenv("GIT_WORK_TREE"); | |
419 | if (work_tree && !stat(work_tree, &buf)) | |
420 | die("working tree '%s' already exists.", work_tree); | |
421 | } | |
422 | ||
423 | if (option_bare || work_tree) | |
424 | git_dir = xstrdup(dir); | |
425 | else { | |
426 | work_tree = dir; | |
427 | git_dir = xstrdup(mkpath("%s/.git", dir)); | |
428 | } | |
429 | ||
430 | if (!option_bare) { | |
431 | junk_work_tree = work_tree; | |
8e21d63b | 432 | if (safe_create_leading_directories_const(work_tree) < 0) |
d824cbba TR |
433 | die_errno("could not create leading directories of '%s'", |
434 | work_tree); | |
55892d23 | 435 | if (!dest_exists && mkdir(work_tree, 0755)) |
d824cbba TR |
436 | die_errno("could not create work tree dir '%s'.", |
437 | work_tree); | |
8434c2f1 DB |
438 | set_git_work_tree(work_tree); |
439 | } | |
440 | junk_git_dir = git_dir; | |
441 | atexit(remove_junk); | |
57b235a4 | 442 | sigchain_push_common(remove_junk_on_signal); |
8434c2f1 | 443 | |
50b5f420 | 444 | setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1); |
8434c2f1 | 445 | |
8e21d63b JK |
446 | if (safe_create_leading_directories_const(git_dir) < 0) |
447 | die("could not create leading directories of '%s'", git_dir); | |
8434c2f1 DB |
448 | set_git_dir(make_absolute_path(git_dir)); |
449 | ||
8434c2f1 DB |
450 | init_db(option_template, option_quiet ? INIT_DB_QUIET : 0); |
451 | ||
5b8063b5 JS |
452 | /* |
453 | * At this point, the config exists, so we do not need the | |
454 | * environment variable. We actually need to unset it, too, to | |
455 | * re-enable parsing of the global configs. | |
456 | */ | |
457 | unsetenv(CONFIG_ENVIRONMENT); | |
458 | ||
8434c2f1 DB |
459 | if (option_reference) |
460 | setup_reference(git_dir); | |
461 | ||
9bd81e42 | 462 | git_config(git_default_config, NULL); |
8434c2f1 DB |
463 | |
464 | if (option_bare) { | |
bc699afc JS |
465 | if (option_mirror) |
466 | src_ref_prefix = "refs/"; | |
b5ff37ac | 467 | strbuf_addstr(&branch_top, src_ref_prefix); |
8434c2f1 DB |
468 | |
469 | git_config_set("core.bare", "true"); | |
470 | } else { | |
b5ff37ac | 471 | strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin); |
bc699afc | 472 | } |
8434c2f1 | 473 | |
689f0396 DB |
474 | strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf); |
475 | ||
bc699afc | 476 | if (option_mirror || !option_bare) { |
8434c2f1 | 477 | /* Configure the remote */ |
689f0396 DB |
478 | strbuf_addf(&key, "remote.%s.fetch", option_origin); |
479 | git_config_set_multivar(key.buf, value.buf, "^$", 0); | |
480 | strbuf_reset(&key); | |
481 | ||
bc699afc | 482 | if (option_mirror) { |
b5ff37ac MV |
483 | strbuf_addf(&key, "remote.%s.mirror", option_origin); |
484 | git_config_set(key.buf, "true"); | |
485 | strbuf_reset(&key); | |
bc699afc JS |
486 | } |
487 | ||
b5ff37ac MV |
488 | strbuf_addf(&key, "remote.%s.url", option_origin); |
489 | git_config_set(key.buf, repo); | |
b5ff37ac | 490 | strbuf_reset(&key); |
8434c2f1 DB |
491 | } |
492 | ||
689f0396 DB |
493 | fetch_pattern = value.buf; |
494 | refspec = parse_fetch_refspec(1, &fetch_pattern); | |
495 | ||
496 | strbuf_reset(&value); | |
8434c2f1 DB |
497 | |
498 | if (path && !is_bundle) | |
499 | refs = clone_local(path, git_dir); | |
500 | else { | |
501 | struct remote *remote = remote_get(argv[0]); | |
1db4a75c | 502 | transport = transport_get(remote, remote->url[0]); |
8434c2f1 | 503 | |
37b78c25 JK |
504 | if (!transport->get_refs_list || !transport->fetch) |
505 | die("Don't know how to clone %s", transport->url); | |
506 | ||
8434c2f1 DB |
507 | transport_set_option(transport, TRANS_OPT_KEEP, "yes"); |
508 | ||
509 | if (option_depth) | |
510 | transport_set_option(transport, TRANS_OPT_DEPTH, | |
511 | option_depth); | |
512 | ||
513 | if (option_quiet) | |
514 | transport->verbose = -1; | |
21188b1e MV |
515 | else if (option_verbose) |
516 | transport->progress = 1; | |
8434c2f1 | 517 | |
837c8767 SH |
518 | if (option_upload_pack) |
519 | transport_set_option(transport, TRANS_OPT_UPLOADPACK, | |
520 | option_upload_pack); | |
521 | ||
8434c2f1 | 522 | refs = transport_get_remote_refs(transport); |
eeefa7c9 | 523 | if (refs) |
86ac7518 | 524 | transport_fetch_refs(transport, refs); |
8434c2f1 DB |
525 | } |
526 | ||
86ac7518 SR |
527 | if (refs) { |
528 | clear_extra_refs(); | |
8434c2f1 | 529 | |
689f0396 | 530 | mapped_refs = write_remote_refs(refs, refspec, reflog_msg.buf); |
8434c2f1 | 531 | |
6cb4e6cc | 532 | remote_head = find_ref_by_name(refs, "HEAD"); |
7a4ee28f JK |
533 | remote_head_points_at = |
534 | guess_remote_head(remote_head, mapped_refs, 0); | |
535 | ||
536 | if (option_branch) { | |
537 | struct strbuf head = STRBUF_INIT; | |
538 | strbuf_addstr(&head, src_ref_prefix); | |
539 | strbuf_addstr(&head, option_branch); | |
540 | our_head_points_at = | |
541 | find_ref_by_name(mapped_refs, head.buf); | |
542 | strbuf_release(&head); | |
543 | ||
544 | if (!our_head_points_at) { | |
545 | warning("Remote branch %s not found in " | |
546 | "upstream %s, using HEAD instead", | |
547 | option_branch, option_origin); | |
548 | our_head_points_at = remote_head_points_at; | |
549 | } | |
550 | } | |
551 | else | |
552 | our_head_points_at = remote_head_points_at; | |
86ac7518 SR |
553 | } |
554 | else { | |
555 | warning("You appear to have cloned an empty repository."); | |
7a4ee28f JK |
556 | our_head_points_at = NULL; |
557 | remote_head_points_at = NULL; | |
86ac7518 SR |
558 | remote_head = NULL; |
559 | option_no_checkout = 1; | |
5cd12b85 | 560 | if (!option_bare) |
a9f2c136 | 561 | install_branch_config(0, "master", option_origin, |
5cd12b85 | 562 | "refs/heads/master"); |
86ac7518 | 563 | } |
8434c2f1 | 564 | |
7a4ee28f JK |
565 | if (remote_head_points_at && !option_bare) { |
566 | struct strbuf head_ref = STRBUF_INIT; | |
567 | strbuf_addstr(&head_ref, branch_top.buf); | |
568 | strbuf_addstr(&head_ref, "HEAD"); | |
569 | create_symref(head_ref.buf, | |
570 | remote_head_points_at->peer_ref->name, | |
571 | reflog_msg.buf); | |
572 | } | |
8434c2f1 | 573 | |
7a4ee28f JK |
574 | if (our_head_points_at) { |
575 | /* Local default branch link */ | |
576 | create_symref("HEAD", our_head_points_at->name, NULL); | |
8434c2f1 | 577 | if (!option_bare) { |
7a4ee28f JK |
578 | const char *head = skip_prefix(our_head_points_at->name, |
579 | "refs/heads/"); | |
8434c2f1 | 580 | update_ref(reflog_msg.buf, "HEAD", |
7a4ee28f | 581 | our_head_points_at->old_sha1, |
8434c2f1 | 582 | NULL, 0, DIE_ON_ERR); |
a9f2c136 | 583 | install_branch_config(0, head, option_origin, |
7a4ee28f | 584 | our_head_points_at->name); |
8434c2f1 DB |
585 | } |
586 | } else if (remote_head) { | |
587 | /* Source had detached HEAD pointing somewhere. */ | |
7a4ee28f | 588 | if (!option_bare) { |
8434c2f1 DB |
589 | update_ref(reflog_msg.buf, "HEAD", |
590 | remote_head->old_sha1, | |
591 | NULL, REF_NODEREF, DIE_ON_ERR); | |
7a4ee28f JK |
592 | our_head_points_at = remote_head; |
593 | } | |
8434c2f1 DB |
594 | } else { |
595 | /* Nothing to checkout out */ | |
596 | if (!option_no_checkout) | |
597 | warning("remote HEAD refers to nonexistent ref, " | |
598 | "unable to checkout.\n"); | |
599 | option_no_checkout = 1; | |
600 | } | |
601 | ||
12d49966 | 602 | if (transport) { |
1db4a75c | 603 | transport_unlock_pack(transport); |
12d49966 JK |
604 | transport_disconnect(transport); |
605 | } | |
1db4a75c | 606 | |
8434c2f1 DB |
607 | if (!option_no_checkout) { |
608 | struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); | |
609 | struct unpack_trees_options opts; | |
610 | struct tree *tree; | |
611 | struct tree_desc t; | |
612 | int fd; | |
613 | ||
614 | /* We need to be in the new work tree for the checkout */ | |
615 | setup_work_tree(); | |
616 | ||
617 | fd = hold_locked_index(lock_file, 1); | |
618 | ||
619 | memset(&opts, 0, sizeof opts); | |
620 | opts.update = 1; | |
a73bc127 JS |
621 | opts.merge = 1; |
622 | opts.fn = oneway_merge; | |
8434c2f1 | 623 | opts.verbose_update = !option_quiet; |
a73bc127 | 624 | opts.src_index = &the_index; |
8434c2f1 DB |
625 | opts.dst_index = &the_index; |
626 | ||
7a4ee28f | 627 | tree = parse_tree_indirect(our_head_points_at->old_sha1); |
8434c2f1 DB |
628 | parse_tree(tree); |
629 | init_tree_desc(&t, tree->buffer, tree->size); | |
630 | unpack_trees(1, &t, &opts); | |
631 | ||
632 | if (write_cache(fd, active_cache, active_nr) || | |
633 | commit_locked_index(lock_file)) | |
634 | die("unable to write new index file"); | |
dfa7a6c5 JK |
635 | |
636 | err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1), | |
637 | sha1_to_hex(remote_head->old_sha1), "1", NULL); | |
e7fed18a JH |
638 | |
639 | if (!err && option_recursive) | |
640 | err = run_command_v_opt(argv_submodule, RUN_GIT_CMD); | |
8434c2f1 DB |
641 | } |
642 | ||
643 | strbuf_release(&reflog_msg); | |
b5ff37ac MV |
644 | strbuf_release(&branch_top); |
645 | strbuf_release(&key); | |
646 | strbuf_release(&value); | |
8434c2f1 | 647 | junk_pid = 0; |
dfa7a6c5 | 648 | return err; |
8434c2f1 | 649 | } |