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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 | ||
5bd631b3 | 40 | static int 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"; |
5bd631b3 | 46 | static int option_verbosity; |
5a518ad4 | 47 | static int option_progress; |
8434c2f1 DB |
48 | |
49 | static struct option builtin_clone_options[] = { | |
5bd631b3 | 50 | OPT__VERBOSITY(&option_verbosity), |
5a518ad4 TRC |
51 | OPT_BOOLEAN(0, "progress", &option_progress, |
52 | "force progress reporting"), | |
8434c2f1 DB |
53 | OPT_BOOLEAN('n', "no-checkout", &option_no_checkout, |
54 | "don't create a checkout"), | |
55 | OPT_BOOLEAN(0, "bare", &option_bare, "create a bare repository"), | |
ebc9d420 JH |
56 | { OPTION_BOOLEAN, 0, "naked", &option_bare, NULL, |
57 | "create a bare repository", | |
58 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN }, | |
bc699afc JS |
59 | OPT_BOOLEAN(0, "mirror", &option_mirror, |
60 | "create a mirror repository (implies bare)"), | |
8434c2f1 DB |
61 | OPT_BOOLEAN('l', "local", &option_local, |
62 | "to clone from a local repository"), | |
63 | OPT_BOOLEAN(0, "no-hardlinks", &option_no_hardlinks, | |
64 | "don't use local hardlinks, always copy"), | |
65 | OPT_BOOLEAN('s', "shared", &option_shared, | |
66 | "setup as shared repository"), | |
e7fed18a | 67 | OPT_BOOLEAN(0, "recursive", &option_recursive, |
ebc9d420 | 68 | "initialize submodules in the clone"), |
8434c2f1 DB |
69 | OPT_STRING(0, "template", &option_template, "path", |
70 | "path the template repository"), | |
71 | OPT_STRING(0, "reference", &option_reference, "repo", | |
72 | "reference repository"), | |
73 | OPT_STRING('o', "origin", &option_origin, "branch", | |
02ed2458 | 74 | "use <branch> instead of 'origin' to track upstream"), |
7a4ee28f JK |
75 | OPT_STRING('b', "branch", &option_branch, "branch", |
76 | "checkout <branch> instead of the remote's HEAD"), | |
8434c2f1 DB |
77 | OPT_STRING('u', "upload-pack", &option_upload_pack, "path", |
78 | "path to git-upload-pack on the remote"), | |
79 | OPT_STRING(0, "depth", &option_depth, "depth", | |
80 | "create a shallow clone of that depth"), | |
81 | ||
82 | OPT_END() | |
83 | }; | |
84 | ||
e7fed18a JH |
85 | static const char *argv_submodule[] = { |
86 | "submodule", "update", "--init", "--recursive", NULL | |
87 | }; | |
88 | ||
8434c2f1 DB |
89 | static char *get_repo_path(const char *repo, int *is_bundle) |
90 | { | |
91 | static char *suffix[] = { "/.git", ".git", "" }; | |
92 | static char *bundle_suffix[] = { ".bundle", "" }; | |
93 | struct stat st; | |
94 | int i; | |
95 | ||
96 | for (i = 0; i < ARRAY_SIZE(suffix); i++) { | |
97 | const char *path; | |
98 | path = mkpath("%s%s", repo, suffix[i]); | |
90b4a71c | 99 | if (is_directory(path)) { |
8434c2f1 | 100 | *is_bundle = 0; |
1b9a9467 | 101 | return xstrdup(make_nonrelative_path(path)); |
8434c2f1 DB |
102 | } |
103 | } | |
104 | ||
105 | for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) { | |
106 | const char *path; | |
107 | path = mkpath("%s%s", repo, bundle_suffix[i]); | |
108 | if (!stat(path, &st) && S_ISREG(st.st_mode)) { | |
109 | *is_bundle = 1; | |
1b9a9467 | 110 | return xstrdup(make_nonrelative_path(path)); |
8434c2f1 DB |
111 | } |
112 | } | |
113 | ||
114 | return NULL; | |
115 | } | |
116 | ||
6612f877 | 117 | static char *guess_dir_name(const char *repo, int is_bundle, int is_bare) |
8434c2f1 | 118 | { |
b8c5db35 | 119 | const char *end = repo + strlen(repo), *start; |
8a94bc7b | 120 | char *dir; |
b8c5db35 JS |
121 | |
122 | /* | |
8a94bc7b | 123 | * Strip trailing spaces, slashes and /.git |
b8c5db35 | 124 | */ |
8a94bc7b | 125 | while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1]))) |
b8c5db35 JS |
126 | end--; |
127 | if (end - repo > 5 && is_dir_sep(end[-5]) && | |
128 | !strncmp(end - 4, ".git", 4)) { | |
129 | end -= 5; | |
130 | while (repo < end && is_dir_sep(end[-1])) | |
131 | end--; | |
132 | } | |
133 | ||
134 | /* | |
135 | * Find last component, but be prepared that repo could have | |
136 | * the form "remote.example.com:foo.git", i.e. no slash | |
137 | * in the directory part. | |
138 | */ | |
139 | start = end; | |
140 | while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':') | |
141 | start--; | |
142 | ||
143 | /* | |
144 | * Strip .{bundle,git}. | |
145 | */ | |
146 | if (is_bundle) { | |
147 | if (end - start > 7 && !strncmp(end - 7, ".bundle", 7)) | |
148 | end -= 7; | |
149 | } else { | |
150 | if (end - start > 4 && !strncmp(end - 4, ".git", 4)) | |
151 | end -= 4; | |
8434c2f1 DB |
152 | } |
153 | ||
6612f877 | 154 | if (is_bare) { |
32716a2c MV |
155 | struct strbuf result = STRBUF_INIT; |
156 | strbuf_addf(&result, "%.*s.git", (int)(end - start), start); | |
2af202be | 157 | dir = strbuf_detach(&result, NULL); |
8a94bc7b AR |
158 | } else |
159 | dir = xstrndup(start, end - start); | |
160 | /* | |
161 | * Replace sequences of 'control' characters and whitespace | |
162 | * with one ascii space, remove leading and trailing spaces. | |
163 | */ | |
164 | if (*dir) { | |
165 | char *out = dir; | |
166 | int prev_space = 1 /* strip leading whitespace */; | |
167 | for (end = dir; *end; ++end) { | |
168 | char ch = *end; | |
169 | if ((unsigned char)ch < '\x20') | |
170 | ch = '\x20'; | |
171 | if (isspace(ch)) { | |
172 | if (prev_space) | |
173 | continue; | |
174 | prev_space = 1; | |
175 | } else | |
176 | prev_space = 0; | |
177 | *out++ = ch; | |
178 | } | |
179 | *out = '\0'; | |
180 | if (out > dir && prev_space) | |
181 | out[-1] = '\0'; | |
6612f877 | 182 | } |
8a94bc7b | 183 | return dir; |
8434c2f1 DB |
184 | } |
185 | ||
44a68fd5 CB |
186 | static void strip_trailing_slashes(char *dir) |
187 | { | |
188 | char *end = dir + strlen(dir); | |
189 | ||
190 | while (dir < end - 1 && is_dir_sep(end[-1])) | |
191 | end--; | |
192 | *end = '\0'; | |
193 | } | |
194 | ||
8434c2f1 DB |
195 | static void setup_reference(const char *repo) |
196 | { | |
197 | const char *ref_git; | |
198 | char *ref_git_copy; | |
199 | ||
200 | struct remote *remote; | |
201 | struct transport *transport; | |
202 | const struct ref *extra; | |
203 | ||
204 | ref_git = make_absolute_path(option_reference); | |
205 | ||
206 | if (is_directory(mkpath("%s/.git/objects", ref_git))) | |
207 | ref_git = mkpath("%s/.git", ref_git); | |
208 | else if (!is_directory(mkpath("%s/objects", ref_git))) | |
209 | die("reference repository '%s' is not a local directory.", | |
210 | option_reference); | |
211 | ||
212 | ref_git_copy = xstrdup(ref_git); | |
213 | ||
214 | add_to_alternates_file(ref_git_copy); | |
215 | ||
216 | remote = remote_get(ref_git_copy); | |
217 | transport = transport_get(remote, ref_git_copy); | |
218 | for (extra = transport_get_remote_refs(transport); extra; | |
219 | extra = extra->next) | |
220 | add_extra_ref(extra->name, extra->old_sha1, 0); | |
221 | ||
222 | transport_disconnect(transport); | |
223 | ||
224 | free(ref_git_copy); | |
225 | } | |
226 | ||
b9e125e0 | 227 | static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest) |
8434c2f1 DB |
228 | { |
229 | struct dirent *de; | |
230 | struct stat buf; | |
231 | int src_len, dest_len; | |
232 | DIR *dir; | |
233 | ||
b9e125e0 | 234 | dir = opendir(src->buf); |
8434c2f1 | 235 | if (!dir) |
0721c314 | 236 | die_errno("failed to open '%s'", src->buf); |
8434c2f1 | 237 | |
b9e125e0 | 238 | if (mkdir(dest->buf, 0777)) { |
8434c2f1 | 239 | if (errno != EEXIST) |
0721c314 | 240 | die_errno("failed to create directory '%s'", dest->buf); |
b9e125e0 | 241 | else if (stat(dest->buf, &buf)) |
0721c314 | 242 | die_errno("failed to stat '%s'", dest->buf); |
8434c2f1 | 243 | else if (!S_ISDIR(buf.st_mode)) |
d7530708 | 244 | die("%s exists and is not a directory", dest->buf); |
8434c2f1 DB |
245 | } |
246 | ||
b9e125e0 MV |
247 | strbuf_addch(src, '/'); |
248 | src_len = src->len; | |
249 | strbuf_addch(dest, '/'); | |
250 | dest_len = dest->len; | |
8434c2f1 DB |
251 | |
252 | while ((de = readdir(dir)) != NULL) { | |
b9e125e0 MV |
253 | strbuf_setlen(src, src_len); |
254 | strbuf_addstr(src, de->d_name); | |
255 | strbuf_setlen(dest, dest_len); | |
256 | strbuf_addstr(dest, de->d_name); | |
257 | if (stat(src->buf, &buf)) { | |
258 | warning ("failed to stat %s\n", src->buf); | |
8434c2f1 DB |
259 | continue; |
260 | } | |
261 | if (S_ISDIR(buf.st_mode)) { | |
262 | if (de->d_name[0] != '.') | |
263 | copy_or_link_directory(src, dest); | |
264 | continue; | |
265 | } | |
266 | ||
b9e125e0 | 267 | if (unlink(dest->buf) && errno != ENOENT) |
d824cbba | 268 | die_errno("failed to unlink '%s'", dest->buf); |
fdabc242 | 269 | if (!option_no_hardlinks) { |
b9e125e0 | 270 | if (!link(src->buf, dest->buf)) |
fdabc242 DB |
271 | continue; |
272 | if (option_local) | |
0721c314 | 273 | die_errno("failed to create link '%s'", dest->buf); |
fdabc242 | 274 | option_no_hardlinks = 1; |
8434c2f1 | 275 | } |
f7835a25 | 276 | if (copy_file_with_time(dest->buf, src->buf, 0666)) |
0721c314 | 277 | die_errno("failed to copy file to '%s'", dest->buf); |
8434c2f1 | 278 | } |
689ef4d4 | 279 | closedir(dir); |
8434c2f1 DB |
280 | } |
281 | ||
282 | static const struct ref *clone_local(const char *src_repo, | |
283 | const char *dest_repo) | |
284 | { | |
285 | const struct ref *ret; | |
b9e125e0 MV |
286 | struct strbuf src = STRBUF_INIT; |
287 | struct strbuf dest = STRBUF_INIT; | |
8434c2f1 DB |
288 | struct remote *remote; |
289 | struct transport *transport; | |
290 | ||
291 | if (option_shared) | |
292 | add_to_alternates_file(src_repo); | |
293 | else { | |
b9e125e0 MV |
294 | strbuf_addf(&src, "%s/objects", src_repo); |
295 | strbuf_addf(&dest, "%s/objects", dest_repo); | |
296 | copy_or_link_directory(&src, &dest); | |
297 | strbuf_release(&src); | |
298 | strbuf_release(&dest); | |
8434c2f1 DB |
299 | } |
300 | ||
301 | remote = remote_get(src_repo); | |
302 | transport = transport_get(remote, src_repo); | |
303 | ret = transport_get_remote_refs(transport); | |
304 | transport_disconnect(transport); | |
28ba96ab JH |
305 | if (0 <= option_verbosity) |
306 | printf("done.\n"); | |
8434c2f1 DB |
307 | return ret; |
308 | } | |
309 | ||
310 | static const char *junk_work_tree; | |
311 | static const char *junk_git_dir; | |
e161acd1 | 312 | static pid_t junk_pid; |
8434c2f1 DB |
313 | |
314 | static void remove_junk(void) | |
315 | { | |
f285a2d7 | 316 | struct strbuf sb = STRBUF_INIT; |
8434c2f1 DB |
317 | if (getpid() != junk_pid) |
318 | return; | |
8434c2f1 DB |
319 | if (junk_git_dir) { |
320 | strbuf_addstr(&sb, junk_git_dir); | |
321 | remove_dir_recursively(&sb, 0); | |
322 | strbuf_reset(&sb); | |
323 | } | |
324 | if (junk_work_tree) { | |
325 | strbuf_addstr(&sb, junk_work_tree); | |
326 | remove_dir_recursively(&sb, 0); | |
327 | strbuf_reset(&sb); | |
328 | } | |
329 | } | |
330 | ||
331 | static void remove_junk_on_signal(int signo) | |
332 | { | |
333 | remove_junk(); | |
4a16d072 | 334 | sigchain_pop(signo); |
8434c2f1 DB |
335 | raise(signo); |
336 | } | |
337 | ||
5bdc32d3 NP |
338 | static struct ref *wanted_peer_refs(const struct ref *refs, |
339 | struct refspec *refspec) | |
8434c2f1 DB |
340 | { |
341 | struct ref *local_refs = NULL; | |
342 | struct ref **tail = &local_refs; | |
8434c2f1 DB |
343 | |
344 | get_fetch_map(refs, refspec, &tail, 0); | |
468386a9 JS |
345 | if (!option_mirror) |
346 | get_fetch_map(refs, tag_refspec, &tail, 0); | |
8434c2f1 | 347 | |
5bdc32d3 NP |
348 | return local_refs; |
349 | } | |
350 | ||
351 | static void write_remote_refs(const struct ref *local_refs) | |
352 | { | |
353 | const struct ref *r; | |
354 | ||
8434c2f1 | 355 | for (r = local_refs; r; r = r->next) |
3e8aded2 JH |
356 | add_extra_ref(r->peer_ref->name, r->old_sha1, 0); |
357 | ||
358 | pack_refs(PACK_REFS_ALL); | |
359 | clear_extra_refs(); | |
8434c2f1 DB |
360 | } |
361 | ||
362 | int cmd_clone(int argc, const char **argv, const char *prefix) | |
363 | { | |
24c61c44 | 364 | int is_bundle = 0, is_local; |
8434c2f1 DB |
365 | struct stat buf; |
366 | const char *repo_name, *repo, *work_tree, *git_dir; | |
367 | char *path, *dir; | |
55892d23 | 368 | int dest_exists; |
37148311 | 369 | const struct ref *refs, *remote_head; |
7a4ee28f JK |
370 | const struct ref *remote_head_points_at; |
371 | const struct ref *our_head_points_at; | |
37148311 | 372 | struct ref *mapped_refs; |
b5ff37ac MV |
373 | struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; |
374 | struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; | |
1db4a75c | 375 | struct transport *transport = NULL; |
bc699afc | 376 | char *src_ref_prefix = "refs/heads/"; |
dfa7a6c5 | 377 | int err = 0; |
8434c2f1 | 378 | |
689f0396 DB |
379 | struct refspec *refspec; |
380 | const char *fetch_pattern; | |
8434c2f1 DB |
381 | |
382 | junk_pid = getpid(); | |
383 | ||
37782920 | 384 | argc = parse_options(argc, argv, prefix, builtin_clone_options, |
8434c2f1 DB |
385 | builtin_clone_usage, 0); |
386 | ||
d52dc4b1 JN |
387 | if (argc > 2) |
388 | usage_msg_opt("Too many arguments.", | |
389 | builtin_clone_usage, builtin_clone_options); | |
390 | ||
8434c2f1 | 391 | if (argc == 0) |
d52dc4b1 JN |
392 | usage_msg_opt("You must specify a repository to clone.", |
393 | builtin_clone_usage, builtin_clone_options); | |
8434c2f1 | 394 | |
bc699afc JS |
395 | if (option_mirror) |
396 | option_bare = 1; | |
397 | ||
8434c2f1 DB |
398 | if (option_bare) { |
399 | if (option_origin) | |
400 | die("--bare and --origin %s options are incompatible.", | |
401 | option_origin); | |
402 | option_no_checkout = 1; | |
8434c2f1 DB |
403 | } |
404 | ||
405 | if (!option_origin) | |
406 | option_origin = "origin"; | |
407 | ||
408 | repo_name = argv[0]; | |
409 | ||
410 | path = get_repo_path(repo_name, &is_bundle); | |
411 | if (path) | |
86521aca | 412 | repo = xstrdup(make_nonrelative_path(repo_name)); |
8434c2f1 DB |
413 | else if (!strchr(repo_name, ':')) |
414 | repo = xstrdup(make_absolute_path(repo_name)); | |
415 | else | |
416 | repo = repo_name; | |
24c61c44 NTND |
417 | is_local = path && !is_bundle; |
418 | if (is_local && option_depth) | |
419 | warning("--depth is ignored in local clones; use file:// instead."); | |
8434c2f1 DB |
420 | |
421 | if (argc == 2) | |
422 | dir = xstrdup(argv[1]); | |
423 | else | |
6612f877 | 424 | dir = guess_dir_name(repo_name, is_bundle, option_bare); |
44a68fd5 | 425 | strip_trailing_slashes(dir); |
8434c2f1 | 426 | |
55892d23 AP |
427 | dest_exists = !stat(dir, &buf); |
428 | if (dest_exists && !is_empty_dir(dir)) | |
429 | die("destination path '%s' already exists and is not " | |
430 | "an empty directory.", dir); | |
8434c2f1 | 431 | |
8434c2f1 DB |
432 | strbuf_addf(&reflog_msg, "clone: from %s", repo); |
433 | ||
434 | if (option_bare) | |
435 | work_tree = NULL; | |
436 | else { | |
437 | work_tree = getenv("GIT_WORK_TREE"); | |
438 | if (work_tree && !stat(work_tree, &buf)) | |
439 | die("working tree '%s' already exists.", work_tree); | |
440 | } | |
441 | ||
442 | if (option_bare || work_tree) | |
443 | git_dir = xstrdup(dir); | |
444 | else { | |
445 | work_tree = dir; | |
446 | git_dir = xstrdup(mkpath("%s/.git", dir)); | |
447 | } | |
448 | ||
449 | if (!option_bare) { | |
450 | junk_work_tree = work_tree; | |
8e21d63b | 451 | if (safe_create_leading_directories_const(work_tree) < 0) |
d824cbba TR |
452 | die_errno("could not create leading directories of '%s'", |
453 | work_tree); | |
55892d23 | 454 | if (!dest_exists && mkdir(work_tree, 0755)) |
d824cbba TR |
455 | die_errno("could not create work tree dir '%s'.", |
456 | work_tree); | |
8434c2f1 DB |
457 | set_git_work_tree(work_tree); |
458 | } | |
459 | junk_git_dir = git_dir; | |
460 | atexit(remove_junk); | |
57b235a4 | 461 | sigchain_push_common(remove_junk_on_signal); |
8434c2f1 | 462 | |
50b5f420 | 463 | setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1); |
8434c2f1 | 464 | |
8e21d63b JK |
465 | if (safe_create_leading_directories_const(git_dir) < 0) |
466 | die("could not create leading directories of '%s'", git_dir); | |
8434c2f1 DB |
467 | set_git_dir(make_absolute_path(git_dir)); |
468 | ||
28ba96ab | 469 | if (0 <= option_verbosity) |
921eabde PH |
470 | printf("Cloning into %s%s...\n", |
471 | option_bare ? "bare repository " : "", dir); | |
28ba96ab | 472 | init_db(option_template, INIT_DB_QUIET); |
8434c2f1 | 473 | |
5b8063b5 JS |
474 | /* |
475 | * At this point, the config exists, so we do not need the | |
476 | * environment variable. We actually need to unset it, too, to | |
477 | * re-enable parsing of the global configs. | |
478 | */ | |
479 | unsetenv(CONFIG_ENVIRONMENT); | |
480 | ||
9bd81e42 | 481 | git_config(git_default_config, NULL); |
8434c2f1 DB |
482 | |
483 | if (option_bare) { | |
bc699afc JS |
484 | if (option_mirror) |
485 | src_ref_prefix = "refs/"; | |
b5ff37ac | 486 | strbuf_addstr(&branch_top, src_ref_prefix); |
8434c2f1 DB |
487 | |
488 | git_config_set("core.bare", "true"); | |
489 | } else { | |
b5ff37ac | 490 | strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin); |
bc699afc | 491 | } |
8434c2f1 | 492 | |
689f0396 DB |
493 | strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf); |
494 | ||
bc699afc | 495 | if (option_mirror || !option_bare) { |
8434c2f1 | 496 | /* Configure the remote */ |
689f0396 DB |
497 | strbuf_addf(&key, "remote.%s.fetch", option_origin); |
498 | git_config_set_multivar(key.buf, value.buf, "^$", 0); | |
499 | strbuf_reset(&key); | |
500 | ||
bc699afc | 501 | if (option_mirror) { |
b5ff37ac MV |
502 | strbuf_addf(&key, "remote.%s.mirror", option_origin); |
503 | git_config_set(key.buf, "true"); | |
504 | strbuf_reset(&key); | |
bc699afc | 505 | } |
8434c2f1 DB |
506 | } |
507 | ||
df61c889 SR |
508 | strbuf_addf(&key, "remote.%s.url", option_origin); |
509 | git_config_set(key.buf, repo); | |
510 | strbuf_reset(&key); | |
511 | ||
766ac6a6 SR |
512 | if (option_reference) |
513 | setup_reference(git_dir); | |
514 | ||
689f0396 DB |
515 | fetch_pattern = value.buf; |
516 | refspec = parse_fetch_refspec(1, &fetch_pattern); | |
517 | ||
518 | strbuf_reset(&value); | |
8434c2f1 | 519 | |
24c61c44 | 520 | if (is_local) { |
8434c2f1 | 521 | refs = clone_local(path, git_dir); |
5bdc32d3 NP |
522 | mapped_refs = wanted_peer_refs(refs, refspec); |
523 | } else { | |
766ac6a6 | 524 | struct remote *remote = remote_get(option_origin); |
1db4a75c | 525 | transport = transport_get(remote, remote->url[0]); |
8434c2f1 | 526 | |
37b78c25 JK |
527 | if (!transport->get_refs_list || !transport->fetch) |
528 | die("Don't know how to clone %s", transport->url); | |
529 | ||
8434c2f1 DB |
530 | transport_set_option(transport, TRANS_OPT_KEEP, "yes"); |
531 | ||
532 | if (option_depth) | |
533 | transport_set_option(transport, TRANS_OPT_DEPTH, | |
534 | option_depth); | |
535 | ||
d01b3c02 | 536 | transport_set_verbosity(transport, option_verbosity, option_progress); |
8434c2f1 | 537 | |
837c8767 SH |
538 | if (option_upload_pack) |
539 | transport_set_option(transport, TRANS_OPT_UPLOADPACK, | |
540 | option_upload_pack); | |
541 | ||
8434c2f1 | 542 | refs = transport_get_remote_refs(transport); |
5bdc32d3 NP |
543 | if (refs) { |
544 | mapped_refs = wanted_peer_refs(refs, refspec); | |
545 | transport_fetch_refs(transport, mapped_refs); | |
546 | } | |
8434c2f1 DB |
547 | } |
548 | ||
86ac7518 SR |
549 | if (refs) { |
550 | clear_extra_refs(); | |
8434c2f1 | 551 | |
5bdc32d3 | 552 | write_remote_refs(mapped_refs); |
8434c2f1 | 553 | |
6cb4e6cc | 554 | remote_head = find_ref_by_name(refs, "HEAD"); |
7a4ee28f JK |
555 | remote_head_points_at = |
556 | guess_remote_head(remote_head, mapped_refs, 0); | |
557 | ||
558 | if (option_branch) { | |
559 | struct strbuf head = STRBUF_INIT; | |
560 | strbuf_addstr(&head, src_ref_prefix); | |
561 | strbuf_addstr(&head, option_branch); | |
562 | our_head_points_at = | |
563 | find_ref_by_name(mapped_refs, head.buf); | |
564 | strbuf_release(&head); | |
565 | ||
566 | if (!our_head_points_at) { | |
567 | warning("Remote branch %s not found in " | |
568 | "upstream %s, using HEAD instead", | |
569 | option_branch, option_origin); | |
570 | our_head_points_at = remote_head_points_at; | |
571 | } | |
572 | } | |
573 | else | |
574 | our_head_points_at = remote_head_points_at; | |
86ac7518 SR |
575 | } |
576 | else { | |
577 | warning("You appear to have cloned an empty repository."); | |
7a4ee28f JK |
578 | our_head_points_at = NULL; |
579 | remote_head_points_at = NULL; | |
86ac7518 SR |
580 | remote_head = NULL; |
581 | option_no_checkout = 1; | |
5cd12b85 | 582 | if (!option_bare) |
a9f2c136 | 583 | install_branch_config(0, "master", option_origin, |
5cd12b85 | 584 | "refs/heads/master"); |
86ac7518 | 585 | } |
8434c2f1 | 586 | |
7a4ee28f JK |
587 | if (remote_head_points_at && !option_bare) { |
588 | struct strbuf head_ref = STRBUF_INIT; | |
589 | strbuf_addstr(&head_ref, branch_top.buf); | |
590 | strbuf_addstr(&head_ref, "HEAD"); | |
591 | create_symref(head_ref.buf, | |
592 | remote_head_points_at->peer_ref->name, | |
593 | reflog_msg.buf); | |
594 | } | |
8434c2f1 | 595 | |
7a4ee28f JK |
596 | if (our_head_points_at) { |
597 | /* Local default branch link */ | |
598 | create_symref("HEAD", our_head_points_at->name, NULL); | |
8434c2f1 | 599 | if (!option_bare) { |
7a4ee28f JK |
600 | const char *head = skip_prefix(our_head_points_at->name, |
601 | "refs/heads/"); | |
8434c2f1 | 602 | update_ref(reflog_msg.buf, "HEAD", |
7a4ee28f | 603 | our_head_points_at->old_sha1, |
8434c2f1 | 604 | NULL, 0, DIE_ON_ERR); |
a9f2c136 | 605 | install_branch_config(0, head, option_origin, |
7a4ee28f | 606 | our_head_points_at->name); |
8434c2f1 DB |
607 | } |
608 | } else if (remote_head) { | |
609 | /* Source had detached HEAD pointing somewhere. */ | |
7a4ee28f | 610 | if (!option_bare) { |
8434c2f1 DB |
611 | update_ref(reflog_msg.buf, "HEAD", |
612 | remote_head->old_sha1, | |
613 | NULL, REF_NODEREF, DIE_ON_ERR); | |
7a4ee28f JK |
614 | our_head_points_at = remote_head; |
615 | } | |
8434c2f1 DB |
616 | } else { |
617 | /* Nothing to checkout out */ | |
618 | if (!option_no_checkout) | |
619 | warning("remote HEAD refers to nonexistent ref, " | |
620 | "unable to checkout.\n"); | |
621 | option_no_checkout = 1; | |
622 | } | |
623 | ||
12d49966 | 624 | if (transport) { |
1db4a75c | 625 | transport_unlock_pack(transport); |
12d49966 JK |
626 | transport_disconnect(transport); |
627 | } | |
1db4a75c | 628 | |
8434c2f1 DB |
629 | if (!option_no_checkout) { |
630 | struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); | |
631 | struct unpack_trees_options opts; | |
632 | struct tree *tree; | |
633 | struct tree_desc t; | |
634 | int fd; | |
635 | ||
636 | /* We need to be in the new work tree for the checkout */ | |
637 | setup_work_tree(); | |
638 | ||
639 | fd = hold_locked_index(lock_file, 1); | |
640 | ||
641 | memset(&opts, 0, sizeof opts); | |
642 | opts.update = 1; | |
a73bc127 JS |
643 | opts.merge = 1; |
644 | opts.fn = oneway_merge; | |
5bd631b3 | 645 | opts.verbose_update = (option_verbosity > 0); |
a73bc127 | 646 | opts.src_index = &the_index; |
8434c2f1 DB |
647 | opts.dst_index = &the_index; |
648 | ||
7a4ee28f | 649 | tree = parse_tree_indirect(our_head_points_at->old_sha1); |
8434c2f1 DB |
650 | parse_tree(tree); |
651 | init_tree_desc(&t, tree->buffer, tree->size); | |
652 | unpack_trees(1, &t, &opts); | |
653 | ||
654 | if (write_cache(fd, active_cache, active_nr) || | |
655 | commit_locked_index(lock_file)) | |
656 | die("unable to write new index file"); | |
dfa7a6c5 JK |
657 | |
658 | err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1), | |
d01a8e32 BS |
659 | sha1_to_hex(our_head_points_at->old_sha1), "1", |
660 | NULL); | |
e7fed18a JH |
661 | |
662 | if (!err && option_recursive) | |
663 | err = run_command_v_opt(argv_submodule, RUN_GIT_CMD); | |
8434c2f1 DB |
664 | } |
665 | ||
666 | strbuf_release(&reflog_msg); | |
b5ff37ac MV |
667 | strbuf_release(&branch_top); |
668 | strbuf_release(&key); | |
669 | strbuf_release(&value); | |
8434c2f1 | 670 | junk_pid = 0; |
dfa7a6c5 | 671 | return err; |
8434c2f1 | 672 | } |