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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 | ||
c2e86add | 11 | #include "builtin.h" |
8434c2f1 DB |
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; |
dbc92b07 | 42 | static char *option_template, *option_depth; |
8434c2f1 | 43 | static char *option_origin = NULL; |
7a4ee28f | 44 | static char *option_branch = NULL; |
b57fb80a | 45 | static const char *real_git_dir; |
8434c2f1 | 46 | static char *option_upload_pack = "git-upload-pack"; |
5bd631b3 | 47 | static int option_verbosity; |
01fdc21f | 48 | static int option_progress = -1; |
84054f79 | 49 | static struct string_list option_config; |
dbc92b07 JH |
50 | static struct string_list option_reference; |
51 | ||
52 | static int opt_parse_reference(const struct option *opt, const char *arg, int unset) | |
53 | { | |
54 | struct string_list *option_reference = opt->value; | |
55 | if (!arg) | |
56 | return -1; | |
57 | string_list_append(option_reference, arg); | |
58 | return 0; | |
59 | } | |
8434c2f1 DB |
60 | |
61 | static struct option builtin_clone_options[] = { | |
5bd631b3 | 62 | OPT__VERBOSITY(&option_verbosity), |
01fdc21f CB |
63 | OPT_BOOL(0, "progress", &option_progress, |
64 | "force progress reporting"), | |
8434c2f1 DB |
65 | OPT_BOOLEAN('n', "no-checkout", &option_no_checkout, |
66 | "don't create a checkout"), | |
67 | OPT_BOOLEAN(0, "bare", &option_bare, "create a bare repository"), | |
ebc9d420 JH |
68 | { OPTION_BOOLEAN, 0, "naked", &option_bare, NULL, |
69 | "create a bare repository", | |
70 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN }, | |
bc699afc JS |
71 | OPT_BOOLEAN(0, "mirror", &option_mirror, |
72 | "create a mirror repository (implies bare)"), | |
8434c2f1 DB |
73 | OPT_BOOLEAN('l', "local", &option_local, |
74 | "to clone from a local repository"), | |
75 | OPT_BOOLEAN(0, "no-hardlinks", &option_no_hardlinks, | |
76 | "don't use local hardlinks, always copy"), | |
77 | OPT_BOOLEAN('s', "shared", &option_shared, | |
78 | "setup as shared repository"), | |
e7fed18a | 79 | OPT_BOOLEAN(0, "recursive", &option_recursive, |
ebc9d420 | 80 | "initialize submodules in the clone"), |
3446a54c | 81 | OPT_BOOLEAN(0, "recurse-submodules", &option_recursive, |
ccdd3da6 | 82 | "initialize submodules in the clone"), |
5027fa86 MG |
83 | OPT_STRING(0, "template", &option_template, "template-directory", |
84 | "directory from which templates will be used"), | |
dbc92b07 JH |
85 | OPT_CALLBACK(0 , "reference", &option_reference, "repo", |
86 | "reference repository", &opt_parse_reference), | |
a31275d6 CMN |
87 | OPT_STRING('o', "origin", &option_origin, "name", |
88 | "use <name> instead of 'origin' to track upstream"), | |
7a4ee28f JK |
89 | OPT_STRING('b', "branch", &option_branch, "branch", |
90 | "checkout <branch> instead of the remote's HEAD"), | |
8434c2f1 DB |
91 | OPT_STRING('u', "upload-pack", &option_upload_pack, "path", |
92 | "path to git-upload-pack on the remote"), | |
93 | OPT_STRING(0, "depth", &option_depth, "depth", | |
94 | "create a shallow clone of that depth"), | |
09ffc706 | 95 | OPT_STRING(0, "separate-git-dir", &real_git_dir, "gitdir", |
b57fb80a | 96 | "separate git dir from working tree"), |
84054f79 JK |
97 | OPT_STRING_LIST('c', "config", &option_config, "key=value", |
98 | "set config inside the new repository"), | |
8434c2f1 DB |
99 | OPT_END() |
100 | }; | |
101 | ||
e7fed18a JH |
102 | static const char *argv_submodule[] = { |
103 | "submodule", "update", "--init", "--recursive", NULL | |
104 | }; | |
105 | ||
8434c2f1 DB |
106 | static char *get_repo_path(const char *repo, int *is_bundle) |
107 | { | |
b3256eb8 | 108 | static char *suffix[] = { "/.git", "", ".git/.git", ".git" }; |
8434c2f1 DB |
109 | static char *bundle_suffix[] = { ".bundle", "" }; |
110 | struct stat st; | |
111 | int i; | |
112 | ||
113 | for (i = 0; i < ARRAY_SIZE(suffix); i++) { | |
114 | const char *path; | |
115 | path = mkpath("%s%s", repo, suffix[i]); | |
9b0ebc72 NTND |
116 | if (stat(path, &st)) |
117 | continue; | |
b3256eb8 | 118 | if (S_ISDIR(st.st_mode) && is_git_directory(path)) { |
8434c2f1 | 119 | *is_bundle = 0; |
e2a57aac | 120 | return xstrdup(absolute_path(path)); |
9b0ebc72 NTND |
121 | } else if (S_ISREG(st.st_mode) && st.st_size > 8) { |
122 | /* Is it a "gitfile"? */ | |
123 | char signature[8]; | |
124 | int len, fd = open(path, O_RDONLY); | |
125 | if (fd < 0) | |
126 | continue; | |
127 | len = read_in_full(fd, signature, 8); | |
128 | close(fd); | |
129 | if (len != 8 || strncmp(signature, "gitdir: ", 8)) | |
130 | continue; | |
131 | path = read_gitfile(path); | |
132 | if (path) { | |
133 | *is_bundle = 0; | |
134 | return xstrdup(absolute_path(path)); | |
135 | } | |
8434c2f1 DB |
136 | } |
137 | } | |
138 | ||
139 | for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) { | |
140 | const char *path; | |
141 | path = mkpath("%s%s", repo, bundle_suffix[i]); | |
142 | if (!stat(path, &st) && S_ISREG(st.st_mode)) { | |
143 | *is_bundle = 1; | |
e2a57aac | 144 | return xstrdup(absolute_path(path)); |
8434c2f1 DB |
145 | } |
146 | } | |
147 | ||
148 | return NULL; | |
149 | } | |
150 | ||
6612f877 | 151 | static char *guess_dir_name(const char *repo, int is_bundle, int is_bare) |
8434c2f1 | 152 | { |
b8c5db35 | 153 | const char *end = repo + strlen(repo), *start; |
8a94bc7b | 154 | char *dir; |
b8c5db35 JS |
155 | |
156 | /* | |
8a94bc7b | 157 | * Strip trailing spaces, slashes and /.git |
b8c5db35 | 158 | */ |
8a94bc7b | 159 | while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1]))) |
b8c5db35 JS |
160 | end--; |
161 | if (end - repo > 5 && is_dir_sep(end[-5]) && | |
162 | !strncmp(end - 4, ".git", 4)) { | |
163 | end -= 5; | |
164 | while (repo < end && is_dir_sep(end[-1])) | |
165 | end--; | |
166 | } | |
167 | ||
168 | /* | |
169 | * Find last component, but be prepared that repo could have | |
170 | * the form "remote.example.com:foo.git", i.e. no slash | |
171 | * in the directory part. | |
172 | */ | |
173 | start = end; | |
174 | while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':') | |
175 | start--; | |
176 | ||
177 | /* | |
178 | * Strip .{bundle,git}. | |
179 | */ | |
180 | if (is_bundle) { | |
181 | if (end - start > 7 && !strncmp(end - 7, ".bundle", 7)) | |
182 | end -= 7; | |
183 | } else { | |
184 | if (end - start > 4 && !strncmp(end - 4, ".git", 4)) | |
185 | end -= 4; | |
8434c2f1 DB |
186 | } |
187 | ||
6612f877 | 188 | if (is_bare) { |
32716a2c MV |
189 | struct strbuf result = STRBUF_INIT; |
190 | strbuf_addf(&result, "%.*s.git", (int)(end - start), start); | |
2af202be | 191 | dir = strbuf_detach(&result, NULL); |
8a94bc7b AR |
192 | } else |
193 | dir = xstrndup(start, end - start); | |
194 | /* | |
195 | * Replace sequences of 'control' characters and whitespace | |
196 | * with one ascii space, remove leading and trailing spaces. | |
197 | */ | |
198 | if (*dir) { | |
199 | char *out = dir; | |
200 | int prev_space = 1 /* strip leading whitespace */; | |
201 | for (end = dir; *end; ++end) { | |
202 | char ch = *end; | |
203 | if ((unsigned char)ch < '\x20') | |
204 | ch = '\x20'; | |
205 | if (isspace(ch)) { | |
206 | if (prev_space) | |
207 | continue; | |
208 | prev_space = 1; | |
209 | } else | |
210 | prev_space = 0; | |
211 | *out++ = ch; | |
212 | } | |
213 | *out = '\0'; | |
214 | if (out > dir && prev_space) | |
215 | out[-1] = '\0'; | |
6612f877 | 216 | } |
8a94bc7b | 217 | return dir; |
8434c2f1 DB |
218 | } |
219 | ||
44a68fd5 CB |
220 | static void strip_trailing_slashes(char *dir) |
221 | { | |
222 | char *end = dir + strlen(dir); | |
223 | ||
224 | while (dir < end - 1 && is_dir_sep(end[-1])) | |
225 | end--; | |
226 | *end = '\0'; | |
227 | } | |
228 | ||
dbc92b07 | 229 | static int add_one_reference(struct string_list_item *item, void *cb_data) |
8434c2f1 | 230 | { |
e6baf4a1 JH |
231 | char *ref_git; |
232 | struct strbuf alternate = STRBUF_INIT; | |
8434c2f1 DB |
233 | struct remote *remote; |
234 | struct transport *transport; | |
235 | const struct ref *extra; | |
236 | ||
e6baf4a1 JH |
237 | /* Beware: real_path() and mkpath() return static buffer */ |
238 | ref_git = xstrdup(real_path(item->string)); | |
239 | if (is_directory(mkpath("%s/.git/objects", ref_git))) { | |
240 | char *ref_git_git = xstrdup(mkpath("%s/.git", ref_git)); | |
241 | free(ref_git); | |
242 | ref_git = ref_git_git; | |
243 | } else if (!is_directory(mkpath("%s/objects", ref_git))) | |
e84d7b74 | 244 | die(_("reference repository '%s' is not a local directory."), |
dbc92b07 | 245 | item->string); |
8434c2f1 | 246 | |
e6baf4a1 JH |
247 | strbuf_addf(&alternate, "%s/objects", ref_git); |
248 | add_to_alternates_file(alternate.buf); | |
249 | strbuf_release(&alternate); | |
8434c2f1 | 250 | |
e6baf4a1 JH |
251 | remote = remote_get(ref_git); |
252 | transport = transport_get(remote, ref_git); | |
8434c2f1 DB |
253 | for (extra = transport_get_remote_refs(transport); extra; |
254 | extra = extra->next) | |
255 | add_extra_ref(extra->name, extra->old_sha1, 0); | |
256 | ||
257 | transport_disconnect(transport); | |
e6baf4a1 | 258 | free(ref_git); |
dbc92b07 JH |
259 | return 0; |
260 | } | |
8434c2f1 | 261 | |
dbc92b07 JH |
262 | static void setup_reference(void) |
263 | { | |
264 | for_each_string_list(&option_reference, add_one_reference, NULL); | |
8434c2f1 DB |
265 | } |
266 | ||
e6baf4a1 JH |
267 | static void copy_alternates(struct strbuf *src, struct strbuf *dst, |
268 | const char *src_repo) | |
269 | { | |
270 | /* | |
271 | * Read from the source objects/info/alternates file | |
272 | * and copy the entries to corresponding file in the | |
273 | * destination repository with add_to_alternates_file(). | |
274 | * Both src and dst have "$path/objects/info/alternates". | |
275 | * | |
276 | * Instead of copying bit-for-bit from the original, | |
277 | * we need to append to existing one so that the already | |
278 | * created entry via "clone -s" is not lost, and also | |
279 | * to turn entries with paths relative to the original | |
280 | * absolute, so that they can be used in the new repository. | |
281 | */ | |
282 | FILE *in = fopen(src->buf, "r"); | |
283 | struct strbuf line = STRBUF_INIT; | |
284 | ||
285 | while (strbuf_getline(&line, in, '\n') != EOF) { | |
286 | char *abs_path, abs_buf[PATH_MAX]; | |
287 | if (!line.len || line.buf[0] == '#') | |
288 | continue; | |
289 | if (is_absolute_path(line.buf)) { | |
290 | add_to_alternates_file(line.buf); | |
291 | continue; | |
292 | } | |
293 | abs_path = mkpath("%s/objects/%s", src_repo, line.buf); | |
294 | normalize_path_copy(abs_buf, abs_path); | |
295 | add_to_alternates_file(abs_buf); | |
296 | } | |
297 | strbuf_release(&line); | |
298 | fclose(in); | |
299 | } | |
300 | ||
301 | static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest, | |
302 | const char *src_repo, int src_baselen) | |
8434c2f1 DB |
303 | { |
304 | struct dirent *de; | |
305 | struct stat buf; | |
306 | int src_len, dest_len; | |
307 | DIR *dir; | |
308 | ||
b9e125e0 | 309 | dir = opendir(src->buf); |
8434c2f1 | 310 | if (!dir) |
e84d7b74 | 311 | die_errno(_("failed to open '%s'"), src->buf); |
8434c2f1 | 312 | |
b9e125e0 | 313 | if (mkdir(dest->buf, 0777)) { |
8434c2f1 | 314 | if (errno != EEXIST) |
e84d7b74 | 315 | die_errno(_("failed to create directory '%s'"), dest->buf); |
b9e125e0 | 316 | else if (stat(dest->buf, &buf)) |
e84d7b74 | 317 | die_errno(_("failed to stat '%s'"), dest->buf); |
8434c2f1 | 318 | else if (!S_ISDIR(buf.st_mode)) |
e84d7b74 | 319 | die(_("%s exists and is not a directory"), dest->buf); |
8434c2f1 DB |
320 | } |
321 | ||
b9e125e0 MV |
322 | strbuf_addch(src, '/'); |
323 | src_len = src->len; | |
324 | strbuf_addch(dest, '/'); | |
325 | dest_len = dest->len; | |
8434c2f1 DB |
326 | |
327 | while ((de = readdir(dir)) != NULL) { | |
b9e125e0 MV |
328 | strbuf_setlen(src, src_len); |
329 | strbuf_addstr(src, de->d_name); | |
330 | strbuf_setlen(dest, dest_len); | |
331 | strbuf_addstr(dest, de->d_name); | |
332 | if (stat(src->buf, &buf)) { | |
e84d7b74 | 333 | warning (_("failed to stat %s\n"), src->buf); |
8434c2f1 DB |
334 | continue; |
335 | } | |
336 | if (S_ISDIR(buf.st_mode)) { | |
337 | if (de->d_name[0] != '.') | |
e6baf4a1 JH |
338 | copy_or_link_directory(src, dest, |
339 | src_repo, src_baselen); | |
340 | continue; | |
341 | } | |
342 | ||
343 | /* Files that cannot be copied bit-for-bit... */ | |
344 | if (!strcmp(src->buf + src_baselen, "/info/alternates")) { | |
345 | copy_alternates(src, dest, src_repo); | |
8434c2f1 DB |
346 | continue; |
347 | } | |
348 | ||
b9e125e0 | 349 | if (unlink(dest->buf) && errno != ENOENT) |
e84d7b74 | 350 | die_errno(_("failed to unlink '%s'"), dest->buf); |
fdabc242 | 351 | if (!option_no_hardlinks) { |
b9e125e0 | 352 | if (!link(src->buf, dest->buf)) |
fdabc242 DB |
353 | continue; |
354 | if (option_local) | |
e84d7b74 | 355 | die_errno(_("failed to create link '%s'"), dest->buf); |
fdabc242 | 356 | option_no_hardlinks = 1; |
8434c2f1 | 357 | } |
f7835a25 | 358 | if (copy_file_with_time(dest->buf, src->buf, 0666)) |
e84d7b74 | 359 | die_errno(_("failed to copy file to '%s'"), dest->buf); |
8434c2f1 | 360 | } |
689ef4d4 | 361 | closedir(dir); |
8434c2f1 DB |
362 | } |
363 | ||
364 | static const struct ref *clone_local(const char *src_repo, | |
365 | const char *dest_repo) | |
366 | { | |
367 | const struct ref *ret; | |
8434c2f1 DB |
368 | struct remote *remote; |
369 | struct transport *transport; | |
370 | ||
e6baf4a1 JH |
371 | if (option_shared) { |
372 | struct strbuf alt = STRBUF_INIT; | |
373 | strbuf_addf(&alt, "%s/objects", src_repo); | |
374 | add_to_alternates_file(alt.buf); | |
375 | strbuf_release(&alt); | |
376 | } else { | |
377 | struct strbuf src = STRBUF_INIT; | |
378 | struct strbuf dest = STRBUF_INIT; | |
b9e125e0 MV |
379 | strbuf_addf(&src, "%s/objects", src_repo); |
380 | strbuf_addf(&dest, "%s/objects", dest_repo); | |
e6baf4a1 | 381 | copy_or_link_directory(&src, &dest, src_repo, src.len); |
b9e125e0 MV |
382 | strbuf_release(&src); |
383 | strbuf_release(&dest); | |
8434c2f1 DB |
384 | } |
385 | ||
386 | remote = remote_get(src_repo); | |
387 | transport = transport_get(remote, src_repo); | |
388 | ret = transport_get_remote_refs(transport); | |
389 | transport_disconnect(transport); | |
28ba96ab | 390 | if (0 <= option_verbosity) |
e84d7b74 | 391 | printf(_("done.\n")); |
8434c2f1 DB |
392 | return ret; |
393 | } | |
394 | ||
395 | static const char *junk_work_tree; | |
396 | static const char *junk_git_dir; | |
e161acd1 | 397 | static pid_t junk_pid; |
8434c2f1 DB |
398 | |
399 | static void remove_junk(void) | |
400 | { | |
f285a2d7 | 401 | struct strbuf sb = STRBUF_INIT; |
8434c2f1 DB |
402 | if (getpid() != junk_pid) |
403 | return; | |
8434c2f1 DB |
404 | if (junk_git_dir) { |
405 | strbuf_addstr(&sb, junk_git_dir); | |
406 | remove_dir_recursively(&sb, 0); | |
407 | strbuf_reset(&sb); | |
408 | } | |
409 | if (junk_work_tree) { | |
410 | strbuf_addstr(&sb, junk_work_tree); | |
411 | remove_dir_recursively(&sb, 0); | |
412 | strbuf_reset(&sb); | |
413 | } | |
414 | } | |
415 | ||
416 | static void remove_junk_on_signal(int signo) | |
417 | { | |
418 | remove_junk(); | |
4a16d072 | 419 | sigchain_pop(signo); |
8434c2f1 DB |
420 | raise(signo); |
421 | } | |
422 | ||
5bdc32d3 NP |
423 | static struct ref *wanted_peer_refs(const struct ref *refs, |
424 | struct refspec *refspec) | |
8434c2f1 | 425 | { |
c1921c18 JK |
426 | struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD")); |
427 | struct ref *local_refs = head; | |
428 | struct ref **tail = head ? &head->next : &local_refs; | |
8434c2f1 DB |
429 | |
430 | get_fetch_map(refs, refspec, &tail, 0); | |
468386a9 JS |
431 | if (!option_mirror) |
432 | get_fetch_map(refs, tag_refspec, &tail, 0); | |
8434c2f1 | 433 | |
5bdc32d3 NP |
434 | return local_refs; |
435 | } | |
436 | ||
437 | static void write_remote_refs(const struct ref *local_refs) | |
438 | { | |
439 | const struct ref *r; | |
440 | ||
c1921c18 JK |
441 | for (r = local_refs; r; r = r->next) { |
442 | if (!r->peer_ref) | |
443 | continue; | |
3e8aded2 | 444 | add_extra_ref(r->peer_ref->name, r->old_sha1, 0); |
c1921c18 | 445 | } |
3e8aded2 JH |
446 | |
447 | pack_refs(PACK_REFS_ALL); | |
448 | clear_extra_refs(); | |
8434c2f1 DB |
449 | } |
450 | ||
84054f79 JK |
451 | static int write_one_config(const char *key, const char *value, void *data) |
452 | { | |
453 | return git_config_set_multivar(key, value ? value : "true", "^$", 0); | |
454 | } | |
455 | ||
456 | static void write_config(struct string_list *config) | |
457 | { | |
458 | int i; | |
459 | ||
460 | for (i = 0; i < config->nr; i++) { | |
461 | if (git_config_parse_parameter(config->items[i].string, | |
462 | write_one_config, NULL) < 0) | |
463 | die("unable to write parameters to config file"); | |
464 | } | |
465 | } | |
466 | ||
8434c2f1 DB |
467 | int cmd_clone(int argc, const char **argv, const char *prefix) |
468 | { | |
24c61c44 | 469 | int is_bundle = 0, is_local; |
8434c2f1 DB |
470 | struct stat buf; |
471 | const char *repo_name, *repo, *work_tree, *git_dir; | |
472 | char *path, *dir; | |
55892d23 | 473 | int dest_exists; |
37148311 | 474 | const struct ref *refs, *remote_head; |
7a4ee28f JK |
475 | const struct ref *remote_head_points_at; |
476 | const struct ref *our_head_points_at; | |
37148311 | 477 | struct ref *mapped_refs; |
b5ff37ac MV |
478 | struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; |
479 | struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; | |
1db4a75c | 480 | struct transport *transport = NULL; |
bc699afc | 481 | char *src_ref_prefix = "refs/heads/"; |
dfa7a6c5 | 482 | int err = 0; |
8434c2f1 | 483 | |
689f0396 DB |
484 | struct refspec *refspec; |
485 | const char *fetch_pattern; | |
8434c2f1 DB |
486 | |
487 | junk_pid = getpid(); | |
488 | ||
bbc30f99 | 489 | packet_trace_identity("clone"); |
37782920 | 490 | argc = parse_options(argc, argv, prefix, builtin_clone_options, |
8434c2f1 DB |
491 | builtin_clone_usage, 0); |
492 | ||
d52dc4b1 | 493 | if (argc > 2) |
e84d7b74 | 494 | usage_msg_opt(_("Too many arguments."), |
d52dc4b1 JN |
495 | builtin_clone_usage, builtin_clone_options); |
496 | ||
8434c2f1 | 497 | if (argc == 0) |
e84d7b74 | 498 | usage_msg_opt(_("You must specify a repository to clone."), |
d52dc4b1 | 499 | builtin_clone_usage, builtin_clone_options); |
8434c2f1 | 500 | |
bc699afc JS |
501 | if (option_mirror) |
502 | option_bare = 1; | |
503 | ||
8434c2f1 DB |
504 | if (option_bare) { |
505 | if (option_origin) | |
e84d7b74 | 506 | die(_("--bare and --origin %s options are incompatible."), |
8434c2f1 DB |
507 | option_origin); |
508 | option_no_checkout = 1; | |
8434c2f1 DB |
509 | } |
510 | ||
511 | if (!option_origin) | |
512 | option_origin = "origin"; | |
513 | ||
514 | repo_name = argv[0]; | |
515 | ||
516 | path = get_repo_path(repo_name, &is_bundle); | |
517 | if (path) | |
e2a57aac | 518 | repo = xstrdup(absolute_path(repo_name)); |
8434c2f1 | 519 | else if (!strchr(repo_name, ':')) |
d3e1ddfd | 520 | die(_("repository '%s' does not exist"), repo_name); |
8434c2f1 DB |
521 | else |
522 | repo = repo_name; | |
24c61c44 NTND |
523 | is_local = path && !is_bundle; |
524 | if (is_local && option_depth) | |
e84d7b74 | 525 | warning(_("--depth is ignored in local clones; use file:// instead.")); |
8434c2f1 DB |
526 | |
527 | if (argc == 2) | |
528 | dir = xstrdup(argv[1]); | |
529 | else | |
6612f877 | 530 | dir = guess_dir_name(repo_name, is_bundle, option_bare); |
44a68fd5 | 531 | strip_trailing_slashes(dir); |
8434c2f1 | 532 | |
55892d23 AP |
533 | dest_exists = !stat(dir, &buf); |
534 | if (dest_exists && !is_empty_dir(dir)) | |
e84d7b74 ÆAB |
535 | die(_("destination path '%s' already exists and is not " |
536 | "an empty directory."), dir); | |
8434c2f1 | 537 | |
8434c2f1 DB |
538 | strbuf_addf(&reflog_msg, "clone: from %s", repo); |
539 | ||
540 | if (option_bare) | |
541 | work_tree = NULL; | |
542 | else { | |
543 | work_tree = getenv("GIT_WORK_TREE"); | |
544 | if (work_tree && !stat(work_tree, &buf)) | |
e84d7b74 | 545 | die(_("working tree '%s' already exists."), work_tree); |
8434c2f1 DB |
546 | } |
547 | ||
548 | if (option_bare || work_tree) | |
549 | git_dir = xstrdup(dir); | |
550 | else { | |
551 | work_tree = dir; | |
552 | git_dir = xstrdup(mkpath("%s/.git", dir)); | |
553 | } | |
554 | ||
555 | if (!option_bare) { | |
556 | junk_work_tree = work_tree; | |
8e21d63b | 557 | if (safe_create_leading_directories_const(work_tree) < 0) |
e84d7b74 | 558 | die_errno(_("could not create leading directories of '%s'"), |
d824cbba | 559 | work_tree); |
55892d23 | 560 | if (!dest_exists && mkdir(work_tree, 0755)) |
e84d7b74 | 561 | die_errno(_("could not create work tree dir '%s'."), |
d824cbba | 562 | work_tree); |
8434c2f1 DB |
563 | set_git_work_tree(work_tree); |
564 | } | |
565 | junk_git_dir = git_dir; | |
566 | atexit(remove_junk); | |
57b235a4 | 567 | sigchain_push_common(remove_junk_on_signal); |
8434c2f1 | 568 | |
50b5f420 | 569 | setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1); |
8434c2f1 | 570 | |
8e21d63b | 571 | if (safe_create_leading_directories_const(git_dir) < 0) |
e84d7b74 | 572 | die(_("could not create leading directories of '%s'"), git_dir); |
b57fb80a NTND |
573 | |
574 | set_git_dir_init(git_dir, real_git_dir, 0); | |
575 | if (real_git_dir) | |
576 | git_dir = real_git_dir; | |
8434c2f1 | 577 | |
3781fcce ÆAB |
578 | if (0 <= option_verbosity) { |
579 | if (option_bare) | |
8debf696 | 580 | printf(_("Cloning into bare repository '%s'...\n"), dir); |
3781fcce | 581 | else |
8debf696 | 582 | printf(_("Cloning into '%s'...\n"), dir); |
3781fcce | 583 | } |
28ba96ab | 584 | init_db(option_template, INIT_DB_QUIET); |
84054f79 | 585 | write_config(&option_config); |
8434c2f1 | 586 | |
5b8063b5 JS |
587 | /* |
588 | * At this point, the config exists, so we do not need the | |
589 | * environment variable. We actually need to unset it, too, to | |
590 | * re-enable parsing of the global configs. | |
591 | */ | |
592 | unsetenv(CONFIG_ENVIRONMENT); | |
593 | ||
9bd81e42 | 594 | git_config(git_default_config, NULL); |
8434c2f1 DB |
595 | |
596 | if (option_bare) { | |
bc699afc JS |
597 | if (option_mirror) |
598 | src_ref_prefix = "refs/"; | |
b5ff37ac | 599 | strbuf_addstr(&branch_top, src_ref_prefix); |
8434c2f1 DB |
600 | |
601 | git_config_set("core.bare", "true"); | |
602 | } else { | |
b5ff37ac | 603 | strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin); |
bc699afc | 604 | } |
8434c2f1 | 605 | |
689f0396 DB |
606 | strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf); |
607 | ||
bc699afc | 608 | if (option_mirror || !option_bare) { |
8434c2f1 | 609 | /* Configure the remote */ |
689f0396 DB |
610 | strbuf_addf(&key, "remote.%s.fetch", option_origin); |
611 | git_config_set_multivar(key.buf, value.buf, "^$", 0); | |
612 | strbuf_reset(&key); | |
613 | ||
bc699afc | 614 | if (option_mirror) { |
b5ff37ac MV |
615 | strbuf_addf(&key, "remote.%s.mirror", option_origin); |
616 | git_config_set(key.buf, "true"); | |
617 | strbuf_reset(&key); | |
bc699afc | 618 | } |
8434c2f1 DB |
619 | } |
620 | ||
df61c889 SR |
621 | strbuf_addf(&key, "remote.%s.url", option_origin); |
622 | git_config_set(key.buf, repo); | |
623 | strbuf_reset(&key); | |
624 | ||
dbc92b07 JH |
625 | if (option_reference.nr) |
626 | setup_reference(); | |
766ac6a6 | 627 | |
689f0396 DB |
628 | fetch_pattern = value.buf; |
629 | refspec = parse_fetch_refspec(1, &fetch_pattern); | |
630 | ||
631 | strbuf_reset(&value); | |
8434c2f1 | 632 | |
24c61c44 | 633 | if (is_local) { |
8434c2f1 | 634 | refs = clone_local(path, git_dir); |
5bdc32d3 NP |
635 | mapped_refs = wanted_peer_refs(refs, refspec); |
636 | } else { | |
766ac6a6 | 637 | struct remote *remote = remote_get(option_origin); |
1db4a75c | 638 | transport = transport_get(remote, remote->url[0]); |
8434c2f1 | 639 | |
37b78c25 | 640 | if (!transport->get_refs_list || !transport->fetch) |
e84d7b74 | 641 | die(_("Don't know how to clone %s"), transport->url); |
37b78c25 | 642 | |
8434c2f1 DB |
643 | transport_set_option(transport, TRANS_OPT_KEEP, "yes"); |
644 | ||
645 | if (option_depth) | |
646 | transport_set_option(transport, TRANS_OPT_DEPTH, | |
647 | option_depth); | |
648 | ||
d01b3c02 | 649 | transport_set_verbosity(transport, option_verbosity, option_progress); |
8434c2f1 | 650 | |
837c8767 SH |
651 | if (option_upload_pack) |
652 | transport_set_option(transport, TRANS_OPT_UPLOADPACK, | |
653 | option_upload_pack); | |
654 | ||
8434c2f1 | 655 | refs = transport_get_remote_refs(transport); |
5bdc32d3 NP |
656 | if (refs) { |
657 | mapped_refs = wanted_peer_refs(refs, refspec); | |
658 | transport_fetch_refs(transport, mapped_refs); | |
659 | } | |
8434c2f1 DB |
660 | } |
661 | ||
86ac7518 SR |
662 | if (refs) { |
663 | clear_extra_refs(); | |
8434c2f1 | 664 | |
5bdc32d3 | 665 | write_remote_refs(mapped_refs); |
8434c2f1 | 666 | |
6cb4e6cc | 667 | remote_head = find_ref_by_name(refs, "HEAD"); |
7a4ee28f JK |
668 | remote_head_points_at = |
669 | guess_remote_head(remote_head, mapped_refs, 0); | |
670 | ||
671 | if (option_branch) { | |
672 | struct strbuf head = STRBUF_INIT; | |
673 | strbuf_addstr(&head, src_ref_prefix); | |
674 | strbuf_addstr(&head, option_branch); | |
675 | our_head_points_at = | |
676 | find_ref_by_name(mapped_refs, head.buf); | |
677 | strbuf_release(&head); | |
678 | ||
679 | if (!our_head_points_at) { | |
e84d7b74 ÆAB |
680 | warning(_("Remote branch %s not found in " |
681 | "upstream %s, using HEAD instead"), | |
7a4ee28f JK |
682 | option_branch, option_origin); |
683 | our_head_points_at = remote_head_points_at; | |
684 | } | |
685 | } | |
686 | else | |
687 | our_head_points_at = remote_head_points_at; | |
86ac7518 SR |
688 | } |
689 | else { | |
e84d7b74 | 690 | warning(_("You appear to have cloned an empty repository.")); |
7a4ee28f JK |
691 | our_head_points_at = NULL; |
692 | remote_head_points_at = NULL; | |
86ac7518 SR |
693 | remote_head = NULL; |
694 | option_no_checkout = 1; | |
5cd12b85 | 695 | if (!option_bare) |
a9f2c136 | 696 | install_branch_config(0, "master", option_origin, |
5cd12b85 | 697 | "refs/heads/master"); |
86ac7518 | 698 | } |
8434c2f1 | 699 | |
7a4ee28f JK |
700 | if (remote_head_points_at && !option_bare) { |
701 | struct strbuf head_ref = STRBUF_INIT; | |
702 | strbuf_addstr(&head_ref, branch_top.buf); | |
703 | strbuf_addstr(&head_ref, "HEAD"); | |
704 | create_symref(head_ref.buf, | |
705 | remote_head_points_at->peer_ref->name, | |
706 | reflog_msg.buf); | |
707 | } | |
8434c2f1 | 708 | |
7a4ee28f JK |
709 | if (our_head_points_at) { |
710 | /* Local default branch link */ | |
711 | create_symref("HEAD", our_head_points_at->name, NULL); | |
8434c2f1 | 712 | if (!option_bare) { |
7a4ee28f JK |
713 | const char *head = skip_prefix(our_head_points_at->name, |
714 | "refs/heads/"); | |
8434c2f1 | 715 | update_ref(reflog_msg.buf, "HEAD", |
7a4ee28f | 716 | our_head_points_at->old_sha1, |
8434c2f1 | 717 | NULL, 0, DIE_ON_ERR); |
a9f2c136 | 718 | install_branch_config(0, head, option_origin, |
7a4ee28f | 719 | our_head_points_at->name); |
8434c2f1 DB |
720 | } |
721 | } else if (remote_head) { | |
722 | /* Source had detached HEAD pointing somewhere. */ | |
7a4ee28f | 723 | if (!option_bare) { |
8434c2f1 DB |
724 | update_ref(reflog_msg.buf, "HEAD", |
725 | remote_head->old_sha1, | |
726 | NULL, REF_NODEREF, DIE_ON_ERR); | |
7a4ee28f JK |
727 | our_head_points_at = remote_head; |
728 | } | |
8434c2f1 DB |
729 | } else { |
730 | /* Nothing to checkout out */ | |
731 | if (!option_no_checkout) | |
e84d7b74 ÆAB |
732 | warning(_("remote HEAD refers to nonexistent ref, " |
733 | "unable to checkout.\n")); | |
8434c2f1 DB |
734 | option_no_checkout = 1; |
735 | } | |
736 | ||
12d49966 | 737 | if (transport) { |
1db4a75c | 738 | transport_unlock_pack(transport); |
12d49966 JK |
739 | transport_disconnect(transport); |
740 | } | |
1db4a75c | 741 | |
8434c2f1 DB |
742 | if (!option_no_checkout) { |
743 | struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); | |
744 | struct unpack_trees_options opts; | |
745 | struct tree *tree; | |
746 | struct tree_desc t; | |
747 | int fd; | |
748 | ||
749 | /* We need to be in the new work tree for the checkout */ | |
750 | setup_work_tree(); | |
751 | ||
752 | fd = hold_locked_index(lock_file, 1); | |
753 | ||
754 | memset(&opts, 0, sizeof opts); | |
755 | opts.update = 1; | |
a73bc127 JS |
756 | opts.merge = 1; |
757 | opts.fn = oneway_merge; | |
5bd631b3 | 758 | opts.verbose_update = (option_verbosity > 0); |
a73bc127 | 759 | opts.src_index = &the_index; |
8434c2f1 DB |
760 | opts.dst_index = &the_index; |
761 | ||
7a4ee28f | 762 | tree = parse_tree_indirect(our_head_points_at->old_sha1); |
8434c2f1 DB |
763 | parse_tree(tree); |
764 | init_tree_desc(&t, tree->buffer, tree->size); | |
765 | unpack_trees(1, &t, &opts); | |
766 | ||
767 | if (write_cache(fd, active_cache, active_nr) || | |
768 | commit_locked_index(lock_file)) | |
e84d7b74 | 769 | die(_("unable to write new index file")); |
dfa7a6c5 JK |
770 | |
771 | err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1), | |
d01a8e32 BS |
772 | sha1_to_hex(our_head_points_at->old_sha1), "1", |
773 | NULL); | |
e7fed18a JH |
774 | |
775 | if (!err && option_recursive) | |
776 | err = run_command_v_opt(argv_submodule, RUN_GIT_CMD); | |
8434c2f1 DB |
777 | } |
778 | ||
779 | strbuf_release(&reflog_msg); | |
b5ff37ac MV |
780 | strbuf_release(&branch_top); |
781 | strbuf_release(&key); | |
782 | strbuf_release(&value); | |
8434c2f1 | 783 | junk_pid = 0; |
dfa7a6c5 | 784 | return err; |
8434c2f1 | 785 | } |