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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 | ||
3e6e0edd | 40 | static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1; |
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; |
5a518ad4 | 48 | static int option_progress; |
84054f79 | 49 | static struct string_list option_config; |
dbc92b07 | 50 | static struct string_list option_reference; |
3e6e0edd | 51 | static const char *src_ref_prefix = "refs/heads/"; |
dbc92b07 JH |
52 | |
53 | static int opt_parse_reference(const struct option *opt, const char *arg, int unset) | |
54 | { | |
55 | struct string_list *option_reference = opt->value; | |
56 | if (!arg) | |
57 | return -1; | |
58 | string_list_append(option_reference, arg); | |
59 | return 0; | |
60 | } | |
8434c2f1 DB |
61 | |
62 | static struct option builtin_clone_options[] = { | |
5bd631b3 | 63 | OPT__VERBOSITY(&option_verbosity), |
5a518ad4 TRC |
64 | OPT_BOOLEAN(0, "progress", &option_progress, |
65 | "force progress reporting"), | |
8434c2f1 DB |
66 | OPT_BOOLEAN('n', "no-checkout", &option_no_checkout, |
67 | "don't create a checkout"), | |
68 | OPT_BOOLEAN(0, "bare", &option_bare, "create a bare repository"), | |
ebc9d420 JH |
69 | { OPTION_BOOLEAN, 0, "naked", &option_bare, NULL, |
70 | "create a bare repository", | |
71 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN }, | |
bc699afc JS |
72 | OPT_BOOLEAN(0, "mirror", &option_mirror, |
73 | "create a mirror repository (implies bare)"), | |
8434c2f1 DB |
74 | OPT_BOOLEAN('l', "local", &option_local, |
75 | "to clone from a local repository"), | |
76 | OPT_BOOLEAN(0, "no-hardlinks", &option_no_hardlinks, | |
77 | "don't use local hardlinks, always copy"), | |
78 | OPT_BOOLEAN('s', "shared", &option_shared, | |
79 | "setup as shared repository"), | |
e7fed18a | 80 | OPT_BOOLEAN(0, "recursive", &option_recursive, |
ebc9d420 | 81 | "initialize submodules in the clone"), |
3446a54c | 82 | OPT_BOOLEAN(0, "recurse-submodules", &option_recursive, |
ccdd3da6 | 83 | "initialize submodules in the clone"), |
5027fa86 MG |
84 | OPT_STRING(0, "template", &option_template, "template-directory", |
85 | "directory from which templates will be used"), | |
dbc92b07 JH |
86 | OPT_CALLBACK(0 , "reference", &option_reference, "repo", |
87 | "reference repository", &opt_parse_reference), | |
a31275d6 CMN |
88 | OPT_STRING('o', "origin", &option_origin, "name", |
89 | "use <name> instead of 'origin' to track upstream"), | |
7a4ee28f JK |
90 | OPT_STRING('b', "branch", &option_branch, "branch", |
91 | "checkout <branch> instead of the remote's HEAD"), | |
8434c2f1 DB |
92 | OPT_STRING('u', "upload-pack", &option_upload_pack, "path", |
93 | "path to git-upload-pack on the remote"), | |
94 | OPT_STRING(0, "depth", &option_depth, "depth", | |
95 | "create a shallow clone of that depth"), | |
3e6e0edd NTND |
96 | OPT_BOOL(0, "single-branch", &option_single_branch, |
97 | "clone only one branch, HEAD or --branch"), | |
09ffc706 | 98 | OPT_STRING(0, "separate-git-dir", &real_git_dir, "gitdir", |
b57fb80a | 99 | "separate git dir from working tree"), |
84054f79 JK |
100 | OPT_STRING_LIST('c', "config", &option_config, "key=value", |
101 | "set config inside the new repository"), | |
8434c2f1 DB |
102 | OPT_END() |
103 | }; | |
104 | ||
e7fed18a JH |
105 | static const char *argv_submodule[] = { |
106 | "submodule", "update", "--init", "--recursive", NULL | |
107 | }; | |
108 | ||
8434c2f1 DB |
109 | static char *get_repo_path(const char *repo, int *is_bundle) |
110 | { | |
111 | static char *suffix[] = { "/.git", ".git", "" }; | |
112 | static char *bundle_suffix[] = { ".bundle", "" }; | |
113 | struct stat st; | |
114 | int i; | |
115 | ||
116 | for (i = 0; i < ARRAY_SIZE(suffix); i++) { | |
117 | const char *path; | |
118 | path = mkpath("%s%s", repo, suffix[i]); | |
9b0ebc72 NTND |
119 | if (stat(path, &st)) |
120 | continue; | |
121 | if (S_ISDIR(st.st_mode)) { | |
8434c2f1 | 122 | *is_bundle = 0; |
e2a57aac | 123 | return xstrdup(absolute_path(path)); |
9b0ebc72 NTND |
124 | } else if (S_ISREG(st.st_mode) && st.st_size > 8) { |
125 | /* Is it a "gitfile"? */ | |
126 | char signature[8]; | |
127 | int len, fd = open(path, O_RDONLY); | |
128 | if (fd < 0) | |
129 | continue; | |
130 | len = read_in_full(fd, signature, 8); | |
131 | close(fd); | |
132 | if (len != 8 || strncmp(signature, "gitdir: ", 8)) | |
133 | continue; | |
134 | path = read_gitfile(path); | |
135 | if (path) { | |
136 | *is_bundle = 0; | |
137 | return xstrdup(absolute_path(path)); | |
138 | } | |
8434c2f1 DB |
139 | } |
140 | } | |
141 | ||
142 | for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) { | |
143 | const char *path; | |
144 | path = mkpath("%s%s", repo, bundle_suffix[i]); | |
145 | if (!stat(path, &st) && S_ISREG(st.st_mode)) { | |
146 | *is_bundle = 1; | |
e2a57aac | 147 | return xstrdup(absolute_path(path)); |
8434c2f1 DB |
148 | } |
149 | } | |
150 | ||
151 | return NULL; | |
152 | } | |
153 | ||
6612f877 | 154 | static char *guess_dir_name(const char *repo, int is_bundle, int is_bare) |
8434c2f1 | 155 | { |
b8c5db35 | 156 | const char *end = repo + strlen(repo), *start; |
8a94bc7b | 157 | char *dir; |
b8c5db35 JS |
158 | |
159 | /* | |
8a94bc7b | 160 | * Strip trailing spaces, slashes and /.git |
b8c5db35 | 161 | */ |
8a94bc7b | 162 | while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1]))) |
b8c5db35 JS |
163 | end--; |
164 | if (end - repo > 5 && is_dir_sep(end[-5]) && | |
165 | !strncmp(end - 4, ".git", 4)) { | |
166 | end -= 5; | |
167 | while (repo < end && is_dir_sep(end[-1])) | |
168 | end--; | |
169 | } | |
170 | ||
171 | /* | |
172 | * Find last component, but be prepared that repo could have | |
173 | * the form "remote.example.com:foo.git", i.e. no slash | |
174 | * in the directory part. | |
175 | */ | |
176 | start = end; | |
177 | while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':') | |
178 | start--; | |
179 | ||
180 | /* | |
181 | * Strip .{bundle,git}. | |
182 | */ | |
183 | if (is_bundle) { | |
184 | if (end - start > 7 && !strncmp(end - 7, ".bundle", 7)) | |
185 | end -= 7; | |
186 | } else { | |
187 | if (end - start > 4 && !strncmp(end - 4, ".git", 4)) | |
188 | end -= 4; | |
8434c2f1 DB |
189 | } |
190 | ||
6612f877 | 191 | if (is_bare) { |
32716a2c MV |
192 | struct strbuf result = STRBUF_INIT; |
193 | strbuf_addf(&result, "%.*s.git", (int)(end - start), start); | |
2af202be | 194 | dir = strbuf_detach(&result, NULL); |
8a94bc7b AR |
195 | } else |
196 | dir = xstrndup(start, end - start); | |
197 | /* | |
198 | * Replace sequences of 'control' characters and whitespace | |
199 | * with one ascii space, remove leading and trailing spaces. | |
200 | */ | |
201 | if (*dir) { | |
202 | char *out = dir; | |
203 | int prev_space = 1 /* strip leading whitespace */; | |
204 | for (end = dir; *end; ++end) { | |
205 | char ch = *end; | |
206 | if ((unsigned char)ch < '\x20') | |
207 | ch = '\x20'; | |
208 | if (isspace(ch)) { | |
209 | if (prev_space) | |
210 | continue; | |
211 | prev_space = 1; | |
212 | } else | |
213 | prev_space = 0; | |
214 | *out++ = ch; | |
215 | } | |
216 | *out = '\0'; | |
217 | if (out > dir && prev_space) | |
218 | out[-1] = '\0'; | |
6612f877 | 219 | } |
8a94bc7b | 220 | return dir; |
8434c2f1 DB |
221 | } |
222 | ||
44a68fd5 CB |
223 | static void strip_trailing_slashes(char *dir) |
224 | { | |
225 | char *end = dir + strlen(dir); | |
226 | ||
227 | while (dir < end - 1 && is_dir_sep(end[-1])) | |
228 | end--; | |
229 | *end = '\0'; | |
230 | } | |
231 | ||
dbc92b07 | 232 | static int add_one_reference(struct string_list_item *item, void *cb_data) |
8434c2f1 | 233 | { |
e6baf4a1 JH |
234 | char *ref_git; |
235 | struct strbuf alternate = STRBUF_INIT; | |
8434c2f1 DB |
236 | struct remote *remote; |
237 | struct transport *transport; | |
238 | const struct ref *extra; | |
239 | ||
e6baf4a1 JH |
240 | /* Beware: real_path() and mkpath() return static buffer */ |
241 | ref_git = xstrdup(real_path(item->string)); | |
242 | if (is_directory(mkpath("%s/.git/objects", ref_git))) { | |
243 | char *ref_git_git = xstrdup(mkpath("%s/.git", ref_git)); | |
244 | free(ref_git); | |
245 | ref_git = ref_git_git; | |
246 | } else if (!is_directory(mkpath("%s/objects", ref_git))) | |
e84d7b74 | 247 | die(_("reference repository '%s' is not a local directory."), |
dbc92b07 | 248 | item->string); |
8434c2f1 | 249 | |
e6baf4a1 JH |
250 | strbuf_addf(&alternate, "%s/objects", ref_git); |
251 | add_to_alternates_file(alternate.buf); | |
252 | strbuf_release(&alternate); | |
8434c2f1 | 253 | |
e6baf4a1 JH |
254 | remote = remote_get(ref_git); |
255 | transport = transport_get(remote, ref_git); | |
8434c2f1 DB |
256 | for (extra = transport_get_remote_refs(transport); extra; |
257 | extra = extra->next) | |
258 | add_extra_ref(extra->name, extra->old_sha1, 0); | |
259 | ||
260 | transport_disconnect(transport); | |
e6baf4a1 | 261 | free(ref_git); |
dbc92b07 JH |
262 | return 0; |
263 | } | |
8434c2f1 | 264 | |
dbc92b07 JH |
265 | static void setup_reference(void) |
266 | { | |
267 | for_each_string_list(&option_reference, add_one_reference, NULL); | |
8434c2f1 DB |
268 | } |
269 | ||
e6baf4a1 JH |
270 | static void copy_alternates(struct strbuf *src, struct strbuf *dst, |
271 | const char *src_repo) | |
272 | { | |
273 | /* | |
274 | * Read from the source objects/info/alternates file | |
275 | * and copy the entries to corresponding file in the | |
276 | * destination repository with add_to_alternates_file(). | |
277 | * Both src and dst have "$path/objects/info/alternates". | |
278 | * | |
279 | * Instead of copying bit-for-bit from the original, | |
280 | * we need to append to existing one so that the already | |
281 | * created entry via "clone -s" is not lost, and also | |
282 | * to turn entries with paths relative to the original | |
283 | * absolute, so that they can be used in the new repository. | |
284 | */ | |
285 | FILE *in = fopen(src->buf, "r"); | |
286 | struct strbuf line = STRBUF_INIT; | |
287 | ||
288 | while (strbuf_getline(&line, in, '\n') != EOF) { | |
289 | char *abs_path, abs_buf[PATH_MAX]; | |
290 | if (!line.len || line.buf[0] == '#') | |
291 | continue; | |
292 | if (is_absolute_path(line.buf)) { | |
293 | add_to_alternates_file(line.buf); | |
294 | continue; | |
295 | } | |
296 | abs_path = mkpath("%s/objects/%s", src_repo, line.buf); | |
297 | normalize_path_copy(abs_buf, abs_path); | |
298 | add_to_alternates_file(abs_buf); | |
299 | } | |
300 | strbuf_release(&line); | |
301 | fclose(in); | |
302 | } | |
303 | ||
304 | static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest, | |
305 | const char *src_repo, int src_baselen) | |
8434c2f1 DB |
306 | { |
307 | struct dirent *de; | |
308 | struct stat buf; | |
309 | int src_len, dest_len; | |
310 | DIR *dir; | |
311 | ||
b9e125e0 | 312 | dir = opendir(src->buf); |
8434c2f1 | 313 | if (!dir) |
e84d7b74 | 314 | die_errno(_("failed to open '%s'"), src->buf); |
8434c2f1 | 315 | |
b9e125e0 | 316 | if (mkdir(dest->buf, 0777)) { |
8434c2f1 | 317 | if (errno != EEXIST) |
e84d7b74 | 318 | die_errno(_("failed to create directory '%s'"), dest->buf); |
b9e125e0 | 319 | else if (stat(dest->buf, &buf)) |
e84d7b74 | 320 | die_errno(_("failed to stat '%s'"), dest->buf); |
8434c2f1 | 321 | else if (!S_ISDIR(buf.st_mode)) |
e84d7b74 | 322 | die(_("%s exists and is not a directory"), dest->buf); |
8434c2f1 DB |
323 | } |
324 | ||
b9e125e0 MV |
325 | strbuf_addch(src, '/'); |
326 | src_len = src->len; | |
327 | strbuf_addch(dest, '/'); | |
328 | dest_len = dest->len; | |
8434c2f1 DB |
329 | |
330 | while ((de = readdir(dir)) != NULL) { | |
b9e125e0 MV |
331 | strbuf_setlen(src, src_len); |
332 | strbuf_addstr(src, de->d_name); | |
333 | strbuf_setlen(dest, dest_len); | |
334 | strbuf_addstr(dest, de->d_name); | |
335 | if (stat(src->buf, &buf)) { | |
e84d7b74 | 336 | warning (_("failed to stat %s\n"), src->buf); |
8434c2f1 DB |
337 | continue; |
338 | } | |
339 | if (S_ISDIR(buf.st_mode)) { | |
340 | if (de->d_name[0] != '.') | |
e6baf4a1 JH |
341 | copy_or_link_directory(src, dest, |
342 | src_repo, src_baselen); | |
343 | continue; | |
344 | } | |
345 | ||
346 | /* Files that cannot be copied bit-for-bit... */ | |
347 | if (!strcmp(src->buf + src_baselen, "/info/alternates")) { | |
348 | copy_alternates(src, dest, src_repo); | |
8434c2f1 DB |
349 | continue; |
350 | } | |
351 | ||
b9e125e0 | 352 | if (unlink(dest->buf) && errno != ENOENT) |
e84d7b74 | 353 | die_errno(_("failed to unlink '%s'"), dest->buf); |
fdabc242 | 354 | if (!option_no_hardlinks) { |
b9e125e0 | 355 | if (!link(src->buf, dest->buf)) |
fdabc242 DB |
356 | continue; |
357 | if (option_local) | |
e84d7b74 | 358 | die_errno(_("failed to create link '%s'"), dest->buf); |
fdabc242 | 359 | option_no_hardlinks = 1; |
8434c2f1 | 360 | } |
f7835a25 | 361 | if (copy_file_with_time(dest->buf, src->buf, 0666)) |
e84d7b74 | 362 | die_errno(_("failed to copy file to '%s'"), dest->buf); |
8434c2f1 | 363 | } |
689ef4d4 | 364 | closedir(dir); |
8434c2f1 DB |
365 | } |
366 | ||
6f48d39f | 367 | static void clone_local(const char *src_repo, const char *dest_repo) |
8434c2f1 | 368 | { |
e6baf4a1 JH |
369 | if (option_shared) { |
370 | struct strbuf alt = STRBUF_INIT; | |
371 | strbuf_addf(&alt, "%s/objects", src_repo); | |
372 | add_to_alternates_file(alt.buf); | |
373 | strbuf_release(&alt); | |
374 | } else { | |
375 | struct strbuf src = STRBUF_INIT; | |
376 | struct strbuf dest = STRBUF_INIT; | |
b9e125e0 MV |
377 | strbuf_addf(&src, "%s/objects", src_repo); |
378 | strbuf_addf(&dest, "%s/objects", dest_repo); | |
e6baf4a1 | 379 | copy_or_link_directory(&src, &dest, src_repo, src.len); |
b9e125e0 MV |
380 | strbuf_release(&src); |
381 | strbuf_release(&dest); | |
8434c2f1 DB |
382 | } |
383 | ||
28ba96ab | 384 | if (0 <= option_verbosity) |
e84d7b74 | 385 | printf(_("done.\n")); |
8434c2f1 DB |
386 | } |
387 | ||
388 | static const char *junk_work_tree; | |
389 | static const char *junk_git_dir; | |
e161acd1 | 390 | static pid_t junk_pid; |
8434c2f1 DB |
391 | |
392 | static void remove_junk(void) | |
393 | { | |
f285a2d7 | 394 | struct strbuf sb = STRBUF_INIT; |
8434c2f1 DB |
395 | if (getpid() != junk_pid) |
396 | return; | |
8434c2f1 DB |
397 | if (junk_git_dir) { |
398 | strbuf_addstr(&sb, junk_git_dir); | |
399 | remove_dir_recursively(&sb, 0); | |
400 | strbuf_reset(&sb); | |
401 | } | |
402 | if (junk_work_tree) { | |
403 | strbuf_addstr(&sb, junk_work_tree); | |
404 | remove_dir_recursively(&sb, 0); | |
405 | strbuf_reset(&sb); | |
406 | } | |
407 | } | |
408 | ||
409 | static void remove_junk_on_signal(int signo) | |
410 | { | |
411 | remove_junk(); | |
4a16d072 | 412 | sigchain_pop(signo); |
8434c2f1 DB |
413 | raise(signo); |
414 | } | |
415 | ||
5bdc32d3 NP |
416 | static struct ref *wanted_peer_refs(const struct ref *refs, |
417 | struct refspec *refspec) | |
8434c2f1 | 418 | { |
c1921c18 JK |
419 | struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD")); |
420 | struct ref *local_refs = head; | |
421 | struct ref **tail = head ? &head->next : &local_refs; | |
8434c2f1 | 422 | |
3e6e0edd NTND |
423 | if (option_single_branch) { |
424 | struct ref *remote_head = NULL; | |
425 | ||
426 | if (!option_branch) | |
427 | remote_head = guess_remote_head(head, refs, 0); | |
428 | else { | |
429 | struct strbuf sb = STRBUF_INIT; | |
430 | strbuf_addstr(&sb, src_ref_prefix); | |
431 | strbuf_addstr(&sb, option_branch); | |
432 | remote_head = find_ref_by_name(refs, sb.buf); | |
433 | strbuf_release(&sb); | |
434 | } | |
435 | ||
436 | if (!remote_head && option_branch) | |
437 | warning(_("Could not find remote branch %s to clone."), | |
438 | option_branch); | |
439 | else | |
440 | get_fetch_map(remote_head, refspec, &tail, 0); | |
441 | } else | |
442 | get_fetch_map(refs, refspec, &tail, 0); | |
443 | ||
444 | if (!option_mirror && !option_single_branch) | |
468386a9 | 445 | get_fetch_map(refs, tag_refspec, &tail, 0); |
8434c2f1 | 446 | |
5bdc32d3 NP |
447 | return local_refs; |
448 | } | |
449 | ||
450 | static void write_remote_refs(const struct ref *local_refs) | |
451 | { | |
452 | const struct ref *r; | |
453 | ||
c1921c18 JK |
454 | for (r = local_refs; r; r = r->next) { |
455 | if (!r->peer_ref) | |
456 | continue; | |
3e8aded2 | 457 | add_extra_ref(r->peer_ref->name, r->old_sha1, 0); |
c1921c18 | 458 | } |
3e8aded2 JH |
459 | |
460 | pack_refs(PACK_REFS_ALL); | |
461 | clear_extra_refs(); | |
8434c2f1 DB |
462 | } |
463 | ||
3e6e0edd NTND |
464 | static void write_followtags(const struct ref *refs, const char *msg) |
465 | { | |
466 | const struct ref *ref; | |
467 | for (ref = refs; ref; ref = ref->next) { | |
468 | if (prefixcmp(ref->name, "refs/tags/")) | |
469 | continue; | |
470 | if (!suffixcmp(ref->name, "^{}")) | |
471 | continue; | |
472 | if (!has_sha1_file(ref->old_sha1)) | |
473 | continue; | |
474 | update_ref(msg, ref->name, ref->old_sha1, | |
475 | NULL, 0, DIE_ON_ERR); | |
476 | } | |
477 | } | |
478 | ||
960b7d1c NTND |
479 | static void update_remote_refs(const struct ref *refs, |
480 | const struct ref *mapped_refs, | |
481 | const struct ref *remote_head_points_at, | |
482 | const char *branch_top, | |
483 | const char *msg) | |
484 | { | |
485 | if (refs) { | |
486 | clear_extra_refs(); | |
487 | write_remote_refs(mapped_refs); | |
488 | if (option_single_branch) | |
489 | write_followtags(refs, msg); | |
490 | } | |
491 | ||
492 | if (remote_head_points_at && !option_bare) { | |
493 | struct strbuf head_ref = STRBUF_INIT; | |
494 | strbuf_addstr(&head_ref, branch_top); | |
495 | strbuf_addstr(&head_ref, "HEAD"); | |
496 | create_symref(head_ref.buf, | |
497 | remote_head_points_at->peer_ref->name, | |
498 | msg); | |
499 | } | |
500 | } | |
501 | ||
f034d354 NTND |
502 | static void update_head(const struct ref *our, const struct ref *remote, |
503 | const char *msg) | |
504 | { | |
505 | if (our) { | |
506 | /* Local default branch link */ | |
507 | create_symref("HEAD", our->name, NULL); | |
508 | if (!option_bare) { | |
509 | const char *head = skip_prefix(our->name, "refs/heads/"); | |
510 | update_ref(msg, "HEAD", our->old_sha1, NULL, 0, DIE_ON_ERR); | |
511 | install_branch_config(0, head, option_origin, our->name); | |
512 | } | |
513 | } else if (remote) { | |
514 | /* | |
515 | * We know remote HEAD points to a non-branch, or | |
516 | * HEAD points to a branch but we don't know which one, or | |
517 | * we asked for a specific branch but it did not exist. | |
518 | * Detach HEAD in all these cases. | |
519 | */ | |
520 | update_ref(msg, "HEAD", remote->old_sha1, | |
521 | NULL, REF_NODEREF, DIE_ON_ERR); | |
522 | } | |
523 | } | |
524 | ||
c39852c1 NTND |
525 | static int checkout(void) |
526 | { | |
527 | unsigned char sha1[20]; | |
528 | char *head; | |
529 | struct lock_file *lock_file; | |
530 | struct unpack_trees_options opts; | |
531 | struct tree *tree; | |
532 | struct tree_desc t; | |
533 | int err = 0, fd; | |
534 | ||
535 | if (option_no_checkout) | |
536 | return 0; | |
537 | ||
538 | head = resolve_refdup("HEAD", sha1, 1, NULL); | |
539 | if (!head) { | |
540 | warning(_("remote HEAD refers to nonexistent ref, " | |
541 | "unable to checkout.\n")); | |
542 | return 0; | |
543 | } | |
544 | if (strcmp(head, "HEAD")) { | |
545 | if (prefixcmp(head, "refs/heads/")) | |
546 | die(_("HEAD not found below refs/heads!")); | |
547 | } | |
548 | free(head); | |
549 | ||
550 | /* We need to be in the new work tree for the checkout */ | |
551 | setup_work_tree(); | |
552 | ||
553 | lock_file = xcalloc(1, sizeof(struct lock_file)); | |
554 | fd = hold_locked_index(lock_file, 1); | |
555 | ||
556 | memset(&opts, 0, sizeof opts); | |
557 | opts.update = 1; | |
558 | opts.merge = 1; | |
559 | opts.fn = oneway_merge; | |
560 | opts.verbose_update = (option_verbosity > 0); | |
561 | opts.src_index = &the_index; | |
562 | opts.dst_index = &the_index; | |
563 | ||
564 | tree = parse_tree_indirect(sha1); | |
565 | parse_tree(tree); | |
566 | init_tree_desc(&t, tree->buffer, tree->size); | |
567 | unpack_trees(1, &t, &opts); | |
568 | ||
569 | if (write_cache(fd, active_cache, active_nr) || | |
570 | commit_locked_index(lock_file)) | |
571 | die(_("unable to write new index file")); | |
572 | ||
573 | err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1), | |
574 | sha1_to_hex(sha1), "1", NULL); | |
575 | ||
576 | if (!err && option_recursive) | |
577 | err = run_command_v_opt(argv_submodule, RUN_GIT_CMD); | |
578 | ||
579 | return err; | |
580 | } | |
581 | ||
84054f79 JK |
582 | static int write_one_config(const char *key, const char *value, void *data) |
583 | { | |
584 | return git_config_set_multivar(key, value ? value : "true", "^$", 0); | |
585 | } | |
586 | ||
587 | static void write_config(struct string_list *config) | |
588 | { | |
589 | int i; | |
590 | ||
591 | for (i = 0; i < config->nr; i++) { | |
592 | if (git_config_parse_parameter(config->items[i].string, | |
593 | write_one_config, NULL) < 0) | |
594 | die("unable to write parameters to config file"); | |
595 | } | |
596 | } | |
597 | ||
8434c2f1 DB |
598 | int cmd_clone(int argc, const char **argv, const char *prefix) |
599 | { | |
24c61c44 | 600 | int is_bundle = 0, is_local; |
8434c2f1 DB |
601 | struct stat buf; |
602 | const char *repo_name, *repo, *work_tree, *git_dir; | |
603 | char *path, *dir; | |
55892d23 | 604 | int dest_exists; |
37148311 | 605 | const struct ref *refs, *remote_head; |
7a4ee28f JK |
606 | const struct ref *remote_head_points_at; |
607 | const struct ref *our_head_points_at; | |
37148311 | 608 | struct ref *mapped_refs; |
b5ff37ac MV |
609 | struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; |
610 | struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; | |
1db4a75c | 611 | struct transport *transport = NULL; |
6f48d39f | 612 | struct remote *remote; |
dfa7a6c5 | 613 | int err = 0; |
8434c2f1 | 614 | |
689f0396 DB |
615 | struct refspec *refspec; |
616 | const char *fetch_pattern; | |
8434c2f1 DB |
617 | |
618 | junk_pid = getpid(); | |
619 | ||
bbc30f99 | 620 | packet_trace_identity("clone"); |
37782920 | 621 | argc = parse_options(argc, argv, prefix, builtin_clone_options, |
8434c2f1 DB |
622 | builtin_clone_usage, 0); |
623 | ||
d52dc4b1 | 624 | if (argc > 2) |
e84d7b74 | 625 | usage_msg_opt(_("Too many arguments."), |
d52dc4b1 JN |
626 | builtin_clone_usage, builtin_clone_options); |
627 | ||
8434c2f1 | 628 | if (argc == 0) |
e84d7b74 | 629 | usage_msg_opt(_("You must specify a repository to clone."), |
d52dc4b1 | 630 | builtin_clone_usage, builtin_clone_options); |
8434c2f1 | 631 | |
3e6e0edd NTND |
632 | if (option_single_branch == -1) |
633 | option_single_branch = option_depth ? 1 : 0; | |
634 | ||
bc699afc JS |
635 | if (option_mirror) |
636 | option_bare = 1; | |
637 | ||
8434c2f1 DB |
638 | if (option_bare) { |
639 | if (option_origin) | |
e84d7b74 | 640 | die(_("--bare and --origin %s options are incompatible."), |
8434c2f1 DB |
641 | option_origin); |
642 | option_no_checkout = 1; | |
8434c2f1 DB |
643 | } |
644 | ||
645 | if (!option_origin) | |
646 | option_origin = "origin"; | |
647 | ||
648 | repo_name = argv[0]; | |
649 | ||
650 | path = get_repo_path(repo_name, &is_bundle); | |
651 | if (path) | |
e2a57aac | 652 | repo = xstrdup(absolute_path(repo_name)); |
8434c2f1 | 653 | else if (!strchr(repo_name, ':')) |
d3e1ddfd | 654 | die(_("repository '%s' does not exist"), repo_name); |
8434c2f1 DB |
655 | else |
656 | repo = repo_name; | |
24c61c44 NTND |
657 | is_local = path && !is_bundle; |
658 | if (is_local && option_depth) | |
e84d7b74 | 659 | warning(_("--depth is ignored in local clones; use file:// instead.")); |
8434c2f1 DB |
660 | |
661 | if (argc == 2) | |
662 | dir = xstrdup(argv[1]); | |
663 | else | |
6612f877 | 664 | dir = guess_dir_name(repo_name, is_bundle, option_bare); |
44a68fd5 | 665 | strip_trailing_slashes(dir); |
8434c2f1 | 666 | |
55892d23 AP |
667 | dest_exists = !stat(dir, &buf); |
668 | if (dest_exists && !is_empty_dir(dir)) | |
e84d7b74 ÆAB |
669 | die(_("destination path '%s' already exists and is not " |
670 | "an empty directory."), dir); | |
8434c2f1 | 671 | |
8434c2f1 DB |
672 | strbuf_addf(&reflog_msg, "clone: from %s", repo); |
673 | ||
674 | if (option_bare) | |
675 | work_tree = NULL; | |
676 | else { | |
677 | work_tree = getenv("GIT_WORK_TREE"); | |
678 | if (work_tree && !stat(work_tree, &buf)) | |
e84d7b74 | 679 | die(_("working tree '%s' already exists."), work_tree); |
8434c2f1 DB |
680 | } |
681 | ||
682 | if (option_bare || work_tree) | |
683 | git_dir = xstrdup(dir); | |
684 | else { | |
685 | work_tree = dir; | |
686 | git_dir = xstrdup(mkpath("%s/.git", dir)); | |
687 | } | |
688 | ||
689 | if (!option_bare) { | |
690 | junk_work_tree = work_tree; | |
8e21d63b | 691 | if (safe_create_leading_directories_const(work_tree) < 0) |
e84d7b74 | 692 | die_errno(_("could not create leading directories of '%s'"), |
d824cbba | 693 | work_tree); |
55892d23 | 694 | if (!dest_exists && mkdir(work_tree, 0755)) |
e84d7b74 | 695 | die_errno(_("could not create work tree dir '%s'."), |
d824cbba | 696 | work_tree); |
8434c2f1 DB |
697 | set_git_work_tree(work_tree); |
698 | } | |
699 | junk_git_dir = git_dir; | |
700 | atexit(remove_junk); | |
57b235a4 | 701 | sigchain_push_common(remove_junk_on_signal); |
8434c2f1 | 702 | |
50b5f420 | 703 | setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1); |
8434c2f1 | 704 | |
8e21d63b | 705 | if (safe_create_leading_directories_const(git_dir) < 0) |
e84d7b74 | 706 | die(_("could not create leading directories of '%s'"), git_dir); |
b57fb80a NTND |
707 | |
708 | set_git_dir_init(git_dir, real_git_dir, 0); | |
709 | if (real_git_dir) | |
710 | git_dir = real_git_dir; | |
8434c2f1 | 711 | |
3781fcce ÆAB |
712 | if (0 <= option_verbosity) { |
713 | if (option_bare) | |
8debf696 | 714 | printf(_("Cloning into bare repository '%s'...\n"), dir); |
3781fcce | 715 | else |
8debf696 | 716 | printf(_("Cloning into '%s'...\n"), dir); |
3781fcce | 717 | } |
28ba96ab | 718 | init_db(option_template, INIT_DB_QUIET); |
84054f79 | 719 | write_config(&option_config); |
8434c2f1 | 720 | |
5b8063b5 JS |
721 | /* |
722 | * At this point, the config exists, so we do not need the | |
723 | * environment variable. We actually need to unset it, too, to | |
724 | * re-enable parsing of the global configs. | |
725 | */ | |
726 | unsetenv(CONFIG_ENVIRONMENT); | |
727 | ||
9bd81e42 | 728 | git_config(git_default_config, NULL); |
8434c2f1 DB |
729 | |
730 | if (option_bare) { | |
bc699afc JS |
731 | if (option_mirror) |
732 | src_ref_prefix = "refs/"; | |
b5ff37ac | 733 | strbuf_addstr(&branch_top, src_ref_prefix); |
8434c2f1 DB |
734 | |
735 | git_config_set("core.bare", "true"); | |
736 | } else { | |
b5ff37ac | 737 | strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin); |
bc699afc | 738 | } |
8434c2f1 | 739 | |
689f0396 DB |
740 | strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf); |
741 | ||
bc699afc | 742 | if (option_mirror || !option_bare) { |
8434c2f1 | 743 | /* Configure the remote */ |
689f0396 DB |
744 | strbuf_addf(&key, "remote.%s.fetch", option_origin); |
745 | git_config_set_multivar(key.buf, value.buf, "^$", 0); | |
746 | strbuf_reset(&key); | |
747 | ||
bc699afc | 748 | if (option_mirror) { |
b5ff37ac MV |
749 | strbuf_addf(&key, "remote.%s.mirror", option_origin); |
750 | git_config_set(key.buf, "true"); | |
751 | strbuf_reset(&key); | |
bc699afc | 752 | } |
8434c2f1 DB |
753 | } |
754 | ||
df61c889 SR |
755 | strbuf_addf(&key, "remote.%s.url", option_origin); |
756 | git_config_set(key.buf, repo); | |
757 | strbuf_reset(&key); | |
758 | ||
dbc92b07 JH |
759 | if (option_reference.nr) |
760 | setup_reference(); | |
766ac6a6 | 761 | |
689f0396 DB |
762 | fetch_pattern = value.buf; |
763 | refspec = parse_fetch_refspec(1, &fetch_pattern); | |
764 | ||
765 | strbuf_reset(&value); | |
8434c2f1 | 766 | |
6f48d39f NTND |
767 | remote = remote_get(option_origin); |
768 | transport = transport_get(remote, remote->url[0]); | |
8434c2f1 | 769 | |
6f48d39f | 770 | if (!is_local) { |
37b78c25 | 771 | if (!transport->get_refs_list || !transport->fetch) |
e84d7b74 | 772 | die(_("Don't know how to clone %s"), transport->url); |
37b78c25 | 773 | |
8434c2f1 DB |
774 | transport_set_option(transport, TRANS_OPT_KEEP, "yes"); |
775 | ||
776 | if (option_depth) | |
777 | transport_set_option(transport, TRANS_OPT_DEPTH, | |
778 | option_depth); | |
3e6e0edd NTND |
779 | if (option_single_branch) |
780 | transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1"); | |
8434c2f1 | 781 | |
d01b3c02 | 782 | transport_set_verbosity(transport, option_verbosity, option_progress); |
8434c2f1 | 783 | |
837c8767 SH |
784 | if (option_upload_pack) |
785 | transport_set_option(transport, TRANS_OPT_UPLOADPACK, | |
786 | option_upload_pack); | |
8434c2f1 DB |
787 | } |
788 | ||
6f48d39f NTND |
789 | refs = transport_get_remote_refs(transport); |
790 | mapped_refs = refs ? wanted_peer_refs(refs, refspec) : NULL; | |
791 | ||
792 | /* | |
793 | * mapped_refs may be updated if transport-helper is used so | |
794 | * we need fetch it early because remote_head code below | |
795 | * relies on it. | |
796 | * | |
797 | * for normal clones, transport_get_remote_refs() should | |
798 | * return reliable ref set, we can delay cloning until after | |
799 | * remote HEAD check. | |
800 | */ | |
801 | if (!is_local && remote->foreign_vcs && refs) | |
802 | transport_fetch_refs(transport, mapped_refs); | |
803 | ||
86ac7518 | 804 | if (refs) { |
6cb4e6cc | 805 | remote_head = find_ref_by_name(refs, "HEAD"); |
7a4ee28f JK |
806 | remote_head_points_at = |
807 | guess_remote_head(remote_head, mapped_refs, 0); | |
808 | ||
809 | if (option_branch) { | |
810 | struct strbuf head = STRBUF_INIT; | |
811 | strbuf_addstr(&head, src_ref_prefix); | |
812 | strbuf_addstr(&head, option_branch); | |
813 | our_head_points_at = | |
814 | find_ref_by_name(mapped_refs, head.buf); | |
815 | strbuf_release(&head); | |
816 | ||
817 | if (!our_head_points_at) { | |
e84d7b74 ÆAB |
818 | warning(_("Remote branch %s not found in " |
819 | "upstream %s, using HEAD instead"), | |
7a4ee28f JK |
820 | option_branch, option_origin); |
821 | our_head_points_at = remote_head_points_at; | |
822 | } | |
823 | } | |
824 | else | |
825 | our_head_points_at = remote_head_points_at; | |
86ac7518 SR |
826 | } |
827 | else { | |
e84d7b74 | 828 | warning(_("You appear to have cloned an empty repository.")); |
7a4ee28f JK |
829 | our_head_points_at = NULL; |
830 | remote_head_points_at = NULL; | |
86ac7518 SR |
831 | remote_head = NULL; |
832 | option_no_checkout = 1; | |
5cd12b85 | 833 | if (!option_bare) |
a9f2c136 | 834 | install_branch_config(0, "master", option_origin, |
5cd12b85 | 835 | "refs/heads/master"); |
86ac7518 | 836 | } |
8434c2f1 | 837 | |
6f48d39f NTND |
838 | if (is_local) |
839 | clone_local(path, git_dir); | |
840 | else if (refs && !remote->foreign_vcs) | |
841 | transport_fetch_refs(transport, mapped_refs); | |
842 | ||
960b7d1c NTND |
843 | update_remote_refs(refs, mapped_refs, remote_head_points_at, |
844 | branch_top.buf, reflog_msg.buf); | |
8434c2f1 | 845 | |
f034d354 | 846 | update_head(our_head_points_at, remote_head, reflog_msg.buf); |
8434c2f1 | 847 | |
6f48d39f NTND |
848 | transport_unlock_pack(transport); |
849 | transport_disconnect(transport); | |
1db4a75c | 850 | |
c39852c1 | 851 | err = checkout(); |
8434c2f1 DB |
852 | |
853 | strbuf_release(&reflog_msg); | |
b5ff37ac MV |
854 | strbuf_release(&branch_top); |
855 | strbuf_release(&key); | |
856 | strbuf_release(&value); | |
8434c2f1 | 857 | junk_pid = 0; |
dfa7a6c5 | 858 | return err; |
8434c2f1 | 859 | } |