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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" |
0433ad12 | 26 | #include "connected.h" |
8434c2f1 DB |
27 | |
28 | /* | |
29 | * Overall FIXMEs: | |
30 | * - respect DB_ENVIRONMENT for .git/objects. | |
31 | * | |
32 | * Implementation notes: | |
33 | * - dropping use-separate-remote and no-separate-remote compatibility | |
34 | * | |
35 | */ | |
36 | static const char * const builtin_clone_usage[] = { | |
32b77add | 37 | N_("git clone [options] [--] <repo> [<dir>]"), |
8434c2f1 DB |
38 | NULL |
39 | }; | |
40 | ||
3e6e0edd | 41 | static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1; |
189260b1 | 42 | static int option_local = -1, option_no_hardlinks, option_shared, option_recursive; |
dbc92b07 | 43 | static char *option_template, *option_depth; |
8434c2f1 | 44 | static char *option_origin = NULL; |
7a4ee28f | 45 | static char *option_branch = NULL; |
b57fb80a | 46 | static const char *real_git_dir; |
8434c2f1 | 47 | static char *option_upload_pack = "git-upload-pack"; |
5bd631b3 | 48 | static int option_verbosity; |
01fdc21f | 49 | static int option_progress = -1; |
84054f79 | 50 | static struct string_list option_config; |
dbc92b07 JH |
51 | static struct string_list option_reference; |
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), |
01fdc21f | 64 | OPT_BOOL(0, "progress", &option_progress, |
32b77add | 65 | N_("force progress reporting")), |
8434c2f1 | 66 | OPT_BOOLEAN('n', "no-checkout", &option_no_checkout, |
32b77add NTND |
67 | N_("don't create a checkout")), |
68 | OPT_BOOLEAN(0, "bare", &option_bare, N_("create a bare repository")), | |
ebc9d420 | 69 | { OPTION_BOOLEAN, 0, "naked", &option_bare, NULL, |
32b77add | 70 | N_("create a bare repository"), |
ebc9d420 | 71 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN }, |
bc699afc | 72 | OPT_BOOLEAN(0, "mirror", &option_mirror, |
32b77add | 73 | N_("create a mirror repository (implies bare)")), |
189260b1 | 74 | OPT_BOOL('l', "local", &option_local, |
32b77add | 75 | N_("to clone from a local repository")), |
8434c2f1 | 76 | OPT_BOOLEAN(0, "no-hardlinks", &option_no_hardlinks, |
32b77add | 77 | N_("don't use local hardlinks, always copy")), |
8434c2f1 | 78 | OPT_BOOLEAN('s', "shared", &option_shared, |
32b77add | 79 | N_("setup as shared repository")), |
e7fed18a | 80 | OPT_BOOLEAN(0, "recursive", &option_recursive, |
32b77add | 81 | N_("initialize submodules in the clone")), |
3446a54c | 82 | OPT_BOOLEAN(0, "recurse-submodules", &option_recursive, |
32b77add NTND |
83 | N_("initialize submodules in the clone")), |
84 | OPT_STRING(0, "template", &option_template, N_("template-directory"), | |
85 | N_("directory from which templates will be used")), | |
86 | OPT_CALLBACK(0 , "reference", &option_reference, N_("repo"), | |
87 | N_("reference repository"), &opt_parse_reference), | |
88 | OPT_STRING('o', "origin", &option_origin, N_("name"), | |
89 | N_("use <name> instead of 'origin' to track upstream")), | |
90 | OPT_STRING('b', "branch", &option_branch, N_("branch"), | |
91 | N_("checkout <branch> instead of the remote's HEAD")), | |
92 | OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"), | |
93 | N_("path to git-upload-pack on the remote")), | |
94 | OPT_STRING(0, "depth", &option_depth, N_("depth"), | |
95 | N_("create a shallow clone of that depth")), | |
3e6e0edd | 96 | OPT_BOOL(0, "single-branch", &option_single_branch, |
32b77add NTND |
97 | N_("clone only one branch, HEAD or --branch")), |
98 | OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"), | |
99 | N_("separate git dir from working tree")), | |
100 | OPT_STRING_LIST('c', "config", &option_config, N_("key=value"), | |
101 | N_("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 | { | |
b3256eb8 | 111 | static char *suffix[] = { "/.git", "", ".git/.git", ".git" }; |
8434c2f1 DB |
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; | |
b3256eb8 | 121 | if (S_ISDIR(st.st_mode) && is_git_directory(path)) { |
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 | 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))) { | |
4e2d094d | 240 | char *ref_git_git = mkpathdup("%s/.git", ref_git); |
e6baf4a1 JH |
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); | |
e6baf4a1 | 250 | free(ref_git); |
dbc92b07 JH |
251 | return 0; |
252 | } | |
8434c2f1 | 253 | |
dbc92b07 JH |
254 | static void setup_reference(void) |
255 | { | |
256 | for_each_string_list(&option_reference, add_one_reference, NULL); | |
8434c2f1 DB |
257 | } |
258 | ||
e6baf4a1 JH |
259 | static void copy_alternates(struct strbuf *src, struct strbuf *dst, |
260 | const char *src_repo) | |
261 | { | |
262 | /* | |
263 | * Read from the source objects/info/alternates file | |
264 | * and copy the entries to corresponding file in the | |
265 | * destination repository with add_to_alternates_file(). | |
266 | * Both src and dst have "$path/objects/info/alternates". | |
267 | * | |
268 | * Instead of copying bit-for-bit from the original, | |
269 | * we need to append to existing one so that the already | |
270 | * created entry via "clone -s" is not lost, and also | |
271 | * to turn entries with paths relative to the original | |
272 | * absolute, so that they can be used in the new repository. | |
273 | */ | |
274 | FILE *in = fopen(src->buf, "r"); | |
275 | struct strbuf line = STRBUF_INIT; | |
276 | ||
277 | while (strbuf_getline(&line, in, '\n') != EOF) { | |
278 | char *abs_path, abs_buf[PATH_MAX]; | |
279 | if (!line.len || line.buf[0] == '#') | |
280 | continue; | |
281 | if (is_absolute_path(line.buf)) { | |
282 | add_to_alternates_file(line.buf); | |
283 | continue; | |
284 | } | |
285 | abs_path = mkpath("%s/objects/%s", src_repo, line.buf); | |
286 | normalize_path_copy(abs_buf, abs_path); | |
287 | add_to_alternates_file(abs_buf); | |
288 | } | |
289 | strbuf_release(&line); | |
290 | fclose(in); | |
291 | } | |
292 | ||
293 | static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest, | |
294 | const char *src_repo, int src_baselen) | |
8434c2f1 DB |
295 | { |
296 | struct dirent *de; | |
297 | struct stat buf; | |
298 | int src_len, dest_len; | |
299 | DIR *dir; | |
300 | ||
b9e125e0 | 301 | dir = opendir(src->buf); |
8434c2f1 | 302 | if (!dir) |
e84d7b74 | 303 | die_errno(_("failed to open '%s'"), src->buf); |
8434c2f1 | 304 | |
b9e125e0 | 305 | if (mkdir(dest->buf, 0777)) { |
8434c2f1 | 306 | if (errno != EEXIST) |
e84d7b74 | 307 | die_errno(_("failed to create directory '%s'"), dest->buf); |
b9e125e0 | 308 | else if (stat(dest->buf, &buf)) |
e84d7b74 | 309 | die_errno(_("failed to stat '%s'"), dest->buf); |
8434c2f1 | 310 | else if (!S_ISDIR(buf.st_mode)) |
e84d7b74 | 311 | die(_("%s exists and is not a directory"), dest->buf); |
8434c2f1 DB |
312 | } |
313 | ||
b9e125e0 MV |
314 | strbuf_addch(src, '/'); |
315 | src_len = src->len; | |
316 | strbuf_addch(dest, '/'); | |
317 | dest_len = dest->len; | |
8434c2f1 DB |
318 | |
319 | while ((de = readdir(dir)) != NULL) { | |
b9e125e0 MV |
320 | strbuf_setlen(src, src_len); |
321 | strbuf_addstr(src, de->d_name); | |
322 | strbuf_setlen(dest, dest_len); | |
323 | strbuf_addstr(dest, de->d_name); | |
324 | if (stat(src->buf, &buf)) { | |
e84d7b74 | 325 | warning (_("failed to stat %s\n"), src->buf); |
8434c2f1 DB |
326 | continue; |
327 | } | |
328 | if (S_ISDIR(buf.st_mode)) { | |
329 | if (de->d_name[0] != '.') | |
e6baf4a1 JH |
330 | copy_or_link_directory(src, dest, |
331 | src_repo, src_baselen); | |
332 | continue; | |
333 | } | |
334 | ||
335 | /* Files that cannot be copied bit-for-bit... */ | |
336 | if (!strcmp(src->buf + src_baselen, "/info/alternates")) { | |
337 | copy_alternates(src, dest, src_repo); | |
8434c2f1 DB |
338 | continue; |
339 | } | |
340 | ||
b9e125e0 | 341 | if (unlink(dest->buf) && errno != ENOENT) |
e84d7b74 | 342 | die_errno(_("failed to unlink '%s'"), dest->buf); |
fdabc242 | 343 | if (!option_no_hardlinks) { |
b9e125e0 | 344 | if (!link(src->buf, dest->buf)) |
fdabc242 | 345 | continue; |
189260b1 | 346 | if (option_local > 0) |
e84d7b74 | 347 | die_errno(_("failed to create link '%s'"), dest->buf); |
fdabc242 | 348 | option_no_hardlinks = 1; |
8434c2f1 | 349 | } |
f7835a25 | 350 | if (copy_file_with_time(dest->buf, src->buf, 0666)) |
e84d7b74 | 351 | die_errno(_("failed to copy file to '%s'"), dest->buf); |
8434c2f1 | 352 | } |
689ef4d4 | 353 | closedir(dir); |
8434c2f1 DB |
354 | } |
355 | ||
6f48d39f | 356 | static void clone_local(const char *src_repo, const char *dest_repo) |
8434c2f1 | 357 | { |
e6baf4a1 JH |
358 | if (option_shared) { |
359 | struct strbuf alt = STRBUF_INIT; | |
360 | strbuf_addf(&alt, "%s/objects", src_repo); | |
361 | add_to_alternates_file(alt.buf); | |
362 | strbuf_release(&alt); | |
363 | } else { | |
364 | struct strbuf src = STRBUF_INIT; | |
365 | struct strbuf dest = STRBUF_INIT; | |
b9e125e0 MV |
366 | strbuf_addf(&src, "%s/objects", src_repo); |
367 | strbuf_addf(&dest, "%s/objects", dest_repo); | |
e6baf4a1 | 368 | copy_or_link_directory(&src, &dest, src_repo, src.len); |
b9e125e0 MV |
369 | strbuf_release(&src); |
370 | strbuf_release(&dest); | |
8434c2f1 DB |
371 | } |
372 | ||
28ba96ab | 373 | if (0 <= option_verbosity) |
e84d7b74 | 374 | printf(_("done.\n")); |
8434c2f1 DB |
375 | } |
376 | ||
377 | static const char *junk_work_tree; | |
378 | static const char *junk_git_dir; | |
e161acd1 | 379 | static pid_t junk_pid; |
8434c2f1 DB |
380 | |
381 | static void remove_junk(void) | |
382 | { | |
f285a2d7 | 383 | struct strbuf sb = STRBUF_INIT; |
8434c2f1 DB |
384 | if (getpid() != junk_pid) |
385 | return; | |
8434c2f1 DB |
386 | if (junk_git_dir) { |
387 | strbuf_addstr(&sb, junk_git_dir); | |
388 | remove_dir_recursively(&sb, 0); | |
389 | strbuf_reset(&sb); | |
390 | } | |
391 | if (junk_work_tree) { | |
392 | strbuf_addstr(&sb, junk_work_tree); | |
393 | remove_dir_recursively(&sb, 0); | |
394 | strbuf_reset(&sb); | |
395 | } | |
396 | } | |
397 | ||
398 | static void remove_junk_on_signal(int signo) | |
399 | { | |
400 | remove_junk(); | |
4a16d072 | 401 | sigchain_pop(signo); |
8434c2f1 DB |
402 | raise(signo); |
403 | } | |
404 | ||
9e585046 NTND |
405 | static struct ref *find_remote_branch(const struct ref *refs, const char *branch) |
406 | { | |
407 | struct ref *ref; | |
408 | struct strbuf head = STRBUF_INIT; | |
409 | strbuf_addstr(&head, "refs/heads/"); | |
410 | strbuf_addstr(&head, branch); | |
411 | ref = find_ref_by_name(refs, head.buf); | |
412 | strbuf_release(&head); | |
5a7d5b68 NTND |
413 | |
414 | if (ref) | |
415 | return ref; | |
416 | ||
417 | strbuf_addstr(&head, "refs/tags/"); | |
418 | strbuf_addstr(&head, branch); | |
419 | ref = find_ref_by_name(refs, head.buf); | |
420 | strbuf_release(&head); | |
421 | ||
9e585046 NTND |
422 | return ref; |
423 | } | |
424 | ||
5bdc32d3 NP |
425 | static struct ref *wanted_peer_refs(const struct ref *refs, |
426 | struct refspec *refspec) | |
8434c2f1 | 427 | { |
c1921c18 JK |
428 | struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD")); |
429 | struct ref *local_refs = head; | |
430 | struct ref **tail = head ? &head->next : &local_refs; | |
8434c2f1 | 431 | |
3e6e0edd NTND |
432 | if (option_single_branch) { |
433 | struct ref *remote_head = NULL; | |
434 | ||
435 | if (!option_branch) | |
436 | remote_head = guess_remote_head(head, refs, 0); | |
0ec4b165 NTND |
437 | else { |
438 | local_refs = NULL; | |
439 | tail = &local_refs; | |
440 | remote_head = copy_ref(find_remote_branch(refs, option_branch)); | |
441 | } | |
3e6e0edd NTND |
442 | |
443 | if (!remote_head && option_branch) | |
444 | warning(_("Could not find remote branch %s to clone."), | |
445 | option_branch); | |
5a7d5b68 | 446 | else { |
3e6e0edd | 447 | get_fetch_map(remote_head, refspec, &tail, 0); |
5a7d5b68 NTND |
448 | |
449 | /* if --branch=tag, pull the requested tag explicitly */ | |
450 | get_fetch_map(remote_head, tag_refspec, &tail, 0); | |
451 | } | |
3e6e0edd NTND |
452 | } else |
453 | get_fetch_map(refs, refspec, &tail, 0); | |
454 | ||
455 | if (!option_mirror && !option_single_branch) | |
468386a9 | 456 | get_fetch_map(refs, tag_refspec, &tail, 0); |
8434c2f1 | 457 | |
5bdc32d3 NP |
458 | return local_refs; |
459 | } | |
460 | ||
461 | static void write_remote_refs(const struct ref *local_refs) | |
462 | { | |
463 | const struct ref *r; | |
464 | ||
c1921c18 JK |
465 | for (r = local_refs; r; r = r->next) { |
466 | if (!r->peer_ref) | |
467 | continue; | |
39ef7fae | 468 | add_packed_ref(r->peer_ref->name, r->old_sha1); |
c1921c18 | 469 | } |
3e8aded2 JH |
470 | |
471 | pack_refs(PACK_REFS_ALL); | |
8434c2f1 DB |
472 | } |
473 | ||
3e6e0edd NTND |
474 | static void write_followtags(const struct ref *refs, const char *msg) |
475 | { | |
476 | const struct ref *ref; | |
477 | for (ref = refs; ref; ref = ref->next) { | |
478 | if (prefixcmp(ref->name, "refs/tags/")) | |
479 | continue; | |
480 | if (!suffixcmp(ref->name, "^{}")) | |
481 | continue; | |
482 | if (!has_sha1_file(ref->old_sha1)) | |
483 | continue; | |
484 | update_ref(msg, ref->name, ref->old_sha1, | |
485 | NULL, 0, DIE_ON_ERR); | |
486 | } | |
487 | } | |
488 | ||
0433ad12 JK |
489 | static int iterate_ref_map(void *cb_data, unsigned char sha1[20]) |
490 | { | |
491 | struct ref **rm = cb_data; | |
492 | struct ref *ref = *rm; | |
493 | ||
494 | /* | |
495 | * Skip anything missing a peer_ref, which we are not | |
496 | * actually going to write a ref for. | |
497 | */ | |
498 | while (ref && !ref->peer_ref) | |
499 | ref = ref->next; | |
500 | /* Returning -1 notes "end of list" to the caller. */ | |
501 | if (!ref) | |
502 | return -1; | |
503 | ||
504 | hashcpy(sha1, ref->old_sha1); | |
505 | *rm = ref->next; | |
506 | return 0; | |
507 | } | |
508 | ||
960b7d1c NTND |
509 | static void update_remote_refs(const struct ref *refs, |
510 | const struct ref *mapped_refs, | |
511 | const struct ref *remote_head_points_at, | |
512 | const char *branch_top, | |
513 | const char *msg) | |
514 | { | |
0433ad12 JK |
515 | const struct ref *rm = mapped_refs; |
516 | ||
517 | if (check_everything_connected(iterate_ref_map, 0, &rm)) | |
518 | die(_("remote did not send all necessary objects")); | |
519 | ||
960b7d1c | 520 | if (refs) { |
960b7d1c NTND |
521 | write_remote_refs(mapped_refs); |
522 | if (option_single_branch) | |
523 | write_followtags(refs, msg); | |
524 | } | |
525 | ||
526 | if (remote_head_points_at && !option_bare) { | |
527 | struct strbuf head_ref = STRBUF_INIT; | |
528 | strbuf_addstr(&head_ref, branch_top); | |
529 | strbuf_addstr(&head_ref, "HEAD"); | |
530 | create_symref(head_ref.buf, | |
531 | remote_head_points_at->peer_ref->name, | |
532 | msg); | |
533 | } | |
534 | } | |
535 | ||
f034d354 NTND |
536 | static void update_head(const struct ref *our, const struct ref *remote, |
537 | const char *msg) | |
538 | { | |
9e585046 | 539 | if (our && !prefixcmp(our->name, "refs/heads/")) { |
f034d354 NTND |
540 | /* Local default branch link */ |
541 | create_symref("HEAD", our->name, NULL); | |
542 | if (!option_bare) { | |
543 | const char *head = skip_prefix(our->name, "refs/heads/"); | |
544 | update_ref(msg, "HEAD", our->old_sha1, NULL, 0, DIE_ON_ERR); | |
545 | install_branch_config(0, head, option_origin, our->name); | |
546 | } | |
5a7d5b68 NTND |
547 | } else if (our) { |
548 | struct commit *c = lookup_commit_reference(our->old_sha1); | |
549 | /* --branch specifies a non-branch (i.e. tags), detach HEAD */ | |
550 | update_ref(msg, "HEAD", c->object.sha1, | |
551 | NULL, REF_NODEREF, DIE_ON_ERR); | |
f034d354 NTND |
552 | } else if (remote) { |
553 | /* | |
554 | * We know remote HEAD points to a non-branch, or | |
920b691f | 555 | * HEAD points to a branch but we don't know which one. |
f034d354 NTND |
556 | * Detach HEAD in all these cases. |
557 | */ | |
558 | update_ref(msg, "HEAD", remote->old_sha1, | |
559 | NULL, REF_NODEREF, DIE_ON_ERR); | |
560 | } | |
561 | } | |
562 | ||
c39852c1 NTND |
563 | static int checkout(void) |
564 | { | |
565 | unsigned char sha1[20]; | |
566 | char *head; | |
567 | struct lock_file *lock_file; | |
568 | struct unpack_trees_options opts; | |
569 | struct tree *tree; | |
570 | struct tree_desc t; | |
571 | int err = 0, fd; | |
572 | ||
573 | if (option_no_checkout) | |
574 | return 0; | |
575 | ||
576 | head = resolve_refdup("HEAD", sha1, 1, NULL); | |
577 | if (!head) { | |
578 | warning(_("remote HEAD refers to nonexistent ref, " | |
579 | "unable to checkout.\n")); | |
580 | return 0; | |
581 | } | |
2857093b NTND |
582 | if (!strcmp(head, "HEAD")) { |
583 | if (advice_detached_head) | |
584 | detach_advice(sha1_to_hex(sha1)); | |
585 | } else { | |
c39852c1 NTND |
586 | if (prefixcmp(head, "refs/heads/")) |
587 | die(_("HEAD not found below refs/heads!")); | |
588 | } | |
589 | free(head); | |
590 | ||
591 | /* We need to be in the new work tree for the checkout */ | |
592 | setup_work_tree(); | |
593 | ||
594 | lock_file = xcalloc(1, sizeof(struct lock_file)); | |
595 | fd = hold_locked_index(lock_file, 1); | |
596 | ||
597 | memset(&opts, 0, sizeof opts); | |
598 | opts.update = 1; | |
599 | opts.merge = 1; | |
600 | opts.fn = oneway_merge; | |
8f63da13 | 601 | opts.verbose_update = (option_verbosity >= 0); |
c39852c1 NTND |
602 | opts.src_index = &the_index; |
603 | opts.dst_index = &the_index; | |
604 | ||
605 | tree = parse_tree_indirect(sha1); | |
606 | parse_tree(tree); | |
607 | init_tree_desc(&t, tree->buffer, tree->size); | |
0aac7bb2 JK |
608 | if (unpack_trees(1, &t, &opts) < 0) |
609 | die(_("unable to checkout working tree")); | |
c39852c1 NTND |
610 | |
611 | if (write_cache(fd, active_cache, active_nr) || | |
612 | commit_locked_index(lock_file)) | |
613 | die(_("unable to write new index file")); | |
614 | ||
615 | err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1), | |
616 | sha1_to_hex(sha1), "1", NULL); | |
617 | ||
618 | if (!err && option_recursive) | |
619 | err = run_command_v_opt(argv_submodule, RUN_GIT_CMD); | |
620 | ||
621 | return err; | |
622 | } | |
623 | ||
84054f79 JK |
624 | static int write_one_config(const char *key, const char *value, void *data) |
625 | { | |
626 | return git_config_set_multivar(key, value ? value : "true", "^$", 0); | |
627 | } | |
628 | ||
629 | static void write_config(struct string_list *config) | |
630 | { | |
631 | int i; | |
632 | ||
633 | for (i = 0; i < config->nr; i++) { | |
634 | if (git_config_parse_parameter(config->items[i].string, | |
635 | write_one_config, NULL) < 0) | |
636 | die("unable to write parameters to config file"); | |
637 | } | |
638 | } | |
639 | ||
31b808a0 RT |
640 | static void write_refspec_config(const char* src_ref_prefix, |
641 | const struct ref* our_head_points_at, | |
642 | const struct ref* remote_head_points_at, struct strbuf* branch_top) | |
643 | { | |
644 | struct strbuf key = STRBUF_INIT; | |
645 | struct strbuf value = STRBUF_INIT; | |
646 | ||
647 | if (option_mirror || !option_bare) { | |
648 | if (option_single_branch && !option_mirror) { | |
649 | if (option_branch) { | |
650 | if (strstr(our_head_points_at->name, "refs/tags/")) | |
651 | strbuf_addf(&value, "+%s:%s", our_head_points_at->name, | |
652 | our_head_points_at->name); | |
653 | else | |
654 | strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name, | |
655 | branch_top->buf, option_branch); | |
656 | } else if (remote_head_points_at) { | |
657 | strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name, | |
658 | branch_top->buf, | |
659 | skip_prefix(remote_head_points_at->name, "refs/heads/")); | |
660 | } | |
661 | /* | |
662 | * otherwise, the next "git fetch" will | |
663 | * simply fetch from HEAD without updating | |
664 | * any remote tracking branch, which is what | |
665 | * we want. | |
666 | */ | |
667 | } else { | |
668 | strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf); | |
669 | } | |
670 | /* Configure the remote */ | |
671 | if (value.len) { | |
672 | strbuf_addf(&key, "remote.%s.fetch", option_origin); | |
673 | git_config_set_multivar(key.buf, value.buf, "^$", 0); | |
674 | strbuf_reset(&key); | |
675 | ||
676 | if (option_mirror) { | |
677 | strbuf_addf(&key, "remote.%s.mirror", option_origin); | |
678 | git_config_set(key.buf, "true"); | |
679 | strbuf_reset(&key); | |
680 | } | |
681 | } | |
682 | } | |
683 | ||
684 | strbuf_release(&key); | |
685 | strbuf_release(&value); | |
686 | } | |
687 | ||
8434c2f1 DB |
688 | int cmd_clone(int argc, const char **argv, const char *prefix) |
689 | { | |
24c61c44 | 690 | int is_bundle = 0, is_local; |
8434c2f1 DB |
691 | struct stat buf; |
692 | const char *repo_name, *repo, *work_tree, *git_dir; | |
693 | char *path, *dir; | |
55892d23 | 694 | int dest_exists; |
37148311 | 695 | const struct ref *refs, *remote_head; |
7a4ee28f JK |
696 | const struct ref *remote_head_points_at; |
697 | const struct ref *our_head_points_at; | |
37148311 | 698 | struct ref *mapped_refs; |
90498161 | 699 | const struct ref *ref; |
b5ff37ac MV |
700 | struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; |
701 | struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; | |
1db4a75c | 702 | struct transport *transport = NULL; |
9e585046 | 703 | const char *src_ref_prefix = "refs/heads/"; |
6f48d39f | 704 | struct remote *remote; |
90498161 | 705 | int err = 0, complete_refs_before_fetch = 1; |
8434c2f1 | 706 | |
689f0396 DB |
707 | struct refspec *refspec; |
708 | const char *fetch_pattern; | |
8434c2f1 DB |
709 | |
710 | junk_pid = getpid(); | |
711 | ||
bbc30f99 | 712 | packet_trace_identity("clone"); |
37782920 | 713 | argc = parse_options(argc, argv, prefix, builtin_clone_options, |
8434c2f1 DB |
714 | builtin_clone_usage, 0); |
715 | ||
d52dc4b1 | 716 | if (argc > 2) |
e84d7b74 | 717 | usage_msg_opt(_("Too many arguments."), |
d52dc4b1 JN |
718 | builtin_clone_usage, builtin_clone_options); |
719 | ||
8434c2f1 | 720 | if (argc == 0) |
e84d7b74 | 721 | usage_msg_opt(_("You must specify a repository to clone."), |
d52dc4b1 | 722 | builtin_clone_usage, builtin_clone_options); |
8434c2f1 | 723 | |
3e6e0edd NTND |
724 | if (option_single_branch == -1) |
725 | option_single_branch = option_depth ? 1 : 0; | |
726 | ||
bc699afc JS |
727 | if (option_mirror) |
728 | option_bare = 1; | |
729 | ||
8434c2f1 DB |
730 | if (option_bare) { |
731 | if (option_origin) | |
e84d7b74 | 732 | die(_("--bare and --origin %s options are incompatible."), |
8434c2f1 | 733 | option_origin); |
95b63f1e NTND |
734 | if (real_git_dir) |
735 | die(_("--bare and --separate-git-dir are incompatible.")); | |
8434c2f1 | 736 | option_no_checkout = 1; |
8434c2f1 DB |
737 | } |
738 | ||
739 | if (!option_origin) | |
740 | option_origin = "origin"; | |
741 | ||
742 | repo_name = argv[0]; | |
743 | ||
744 | path = get_repo_path(repo_name, &is_bundle); | |
745 | if (path) | |
e2a57aac | 746 | repo = xstrdup(absolute_path(repo_name)); |
8434c2f1 | 747 | else if (!strchr(repo_name, ':')) |
d3e1ddfd | 748 | die(_("repository '%s' does not exist"), repo_name); |
8434c2f1 DB |
749 | else |
750 | repo = repo_name; | |
189260b1 | 751 | is_local = option_local != 0 && path && !is_bundle; |
24c61c44 | 752 | if (is_local && option_depth) |
e84d7b74 | 753 | warning(_("--depth is ignored in local clones; use file:// instead.")); |
8434c2f1 DB |
754 | |
755 | if (argc == 2) | |
756 | dir = xstrdup(argv[1]); | |
757 | else | |
6612f877 | 758 | dir = guess_dir_name(repo_name, is_bundle, option_bare); |
44a68fd5 | 759 | strip_trailing_slashes(dir); |
8434c2f1 | 760 | |
55892d23 AP |
761 | dest_exists = !stat(dir, &buf); |
762 | if (dest_exists && !is_empty_dir(dir)) | |
e84d7b74 ÆAB |
763 | die(_("destination path '%s' already exists and is not " |
764 | "an empty directory."), dir); | |
8434c2f1 | 765 | |
8434c2f1 DB |
766 | strbuf_addf(&reflog_msg, "clone: from %s", repo); |
767 | ||
768 | if (option_bare) | |
769 | work_tree = NULL; | |
770 | else { | |
771 | work_tree = getenv("GIT_WORK_TREE"); | |
772 | if (work_tree && !stat(work_tree, &buf)) | |
e84d7b74 | 773 | die(_("working tree '%s' already exists."), work_tree); |
8434c2f1 DB |
774 | } |
775 | ||
776 | if (option_bare || work_tree) | |
777 | git_dir = xstrdup(dir); | |
778 | else { | |
779 | work_tree = dir; | |
4e2d094d | 780 | git_dir = mkpathdup("%s/.git", dir); |
8434c2f1 DB |
781 | } |
782 | ||
783 | if (!option_bare) { | |
784 | junk_work_tree = work_tree; | |
8e21d63b | 785 | if (safe_create_leading_directories_const(work_tree) < 0) |
e84d7b74 | 786 | die_errno(_("could not create leading directories of '%s'"), |
d824cbba | 787 | work_tree); |
45d4fdc2 | 788 | if (!dest_exists && mkdir(work_tree, 0777)) |
e84d7b74 | 789 | die_errno(_("could not create work tree dir '%s'."), |
d824cbba | 790 | work_tree); |
8434c2f1 DB |
791 | set_git_work_tree(work_tree); |
792 | } | |
793 | junk_git_dir = git_dir; | |
794 | atexit(remove_junk); | |
57b235a4 | 795 | sigchain_push_common(remove_junk_on_signal); |
8434c2f1 | 796 | |
8e21d63b | 797 | if (safe_create_leading_directories_const(git_dir) < 0) |
e84d7b74 | 798 | die(_("could not create leading directories of '%s'"), git_dir); |
b57fb80a NTND |
799 | |
800 | set_git_dir_init(git_dir, real_git_dir, 0); | |
9be1980b | 801 | if (real_git_dir) { |
b57fb80a | 802 | git_dir = real_git_dir; |
9be1980b JL |
803 | junk_git_dir = real_git_dir; |
804 | } | |
8434c2f1 | 805 | |
3781fcce ÆAB |
806 | if (0 <= option_verbosity) { |
807 | if (option_bare) | |
8debf696 | 808 | printf(_("Cloning into bare repository '%s'...\n"), dir); |
3781fcce | 809 | else |
8debf696 | 810 | printf(_("Cloning into '%s'...\n"), dir); |
3781fcce | 811 | } |
28ba96ab | 812 | init_db(option_template, INIT_DB_QUIET); |
84054f79 | 813 | write_config(&option_config); |
8434c2f1 | 814 | |
9bd81e42 | 815 | git_config(git_default_config, NULL); |
8434c2f1 DB |
816 | |
817 | if (option_bare) { | |
bc699afc JS |
818 | if (option_mirror) |
819 | src_ref_prefix = "refs/"; | |
b5ff37ac | 820 | strbuf_addstr(&branch_top, src_ref_prefix); |
8434c2f1 DB |
821 | |
822 | git_config_set("core.bare", "true"); | |
823 | } else { | |
b5ff37ac | 824 | strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin); |
bc699afc | 825 | } |
8434c2f1 | 826 | |
689f0396 | 827 | strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf); |
df61c889 SR |
828 | strbuf_addf(&key, "remote.%s.url", option_origin); |
829 | git_config_set(key.buf, repo); | |
830 | strbuf_reset(&key); | |
831 | ||
dbc92b07 JH |
832 | if (option_reference.nr) |
833 | setup_reference(); | |
766ac6a6 | 834 | |
689f0396 DB |
835 | fetch_pattern = value.buf; |
836 | refspec = parse_fetch_refspec(1, &fetch_pattern); | |
837 | ||
838 | strbuf_reset(&value); | |
8434c2f1 | 839 | |
6f48d39f NTND |
840 | remote = remote_get(option_origin); |
841 | transport = transport_get(remote, remote->url[0]); | |
8434c2f1 | 842 | |
6f48d39f | 843 | if (!is_local) { |
37b78c25 | 844 | if (!transport->get_refs_list || !transport->fetch) |
e84d7b74 | 845 | die(_("Don't know how to clone %s"), transport->url); |
37b78c25 | 846 | |
8434c2f1 DB |
847 | transport_set_option(transport, TRANS_OPT_KEEP, "yes"); |
848 | ||
849 | if (option_depth) | |
850 | transport_set_option(transport, TRANS_OPT_DEPTH, | |
851 | option_depth); | |
3e6e0edd NTND |
852 | if (option_single_branch) |
853 | transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1"); | |
8434c2f1 | 854 | |
d01b3c02 | 855 | transport_set_verbosity(transport, option_verbosity, option_progress); |
8434c2f1 | 856 | |
837c8767 SH |
857 | if (option_upload_pack) |
858 | transport_set_option(transport, TRANS_OPT_UPLOADPACK, | |
859 | option_upload_pack); | |
8434c2f1 DB |
860 | } |
861 | ||
6f48d39f | 862 | refs = transport_get_remote_refs(transport); |
8434c2f1 | 863 | |
5b05795c MH |
864 | if (refs) { |
865 | mapped_refs = wanted_peer_refs(refs, refspec); | |
866 | /* | |
867 | * transport_get_remote_refs() may return refs with null sha-1 | |
868 | * in mapped_refs (see struct transport->get_refs_list | |
869 | * comment). In that case we need fetch it early because | |
870 | * remote_head code below relies on it. | |
871 | * | |
872 | * for normal clones, transport_get_remote_refs() should | |
873 | * return reliable ref set, we can delay cloning until after | |
874 | * remote HEAD check. | |
875 | */ | |
876 | for (ref = refs; ref; ref = ref->next) | |
877 | if (is_null_sha1(ref->old_sha1)) { | |
878 | complete_refs_before_fetch = 0; | |
879 | break; | |
880 | } | |
90498161 | 881 | |
5b05795c MH |
882 | if (!is_local && !complete_refs_before_fetch) |
883 | transport_fetch_refs(transport, mapped_refs); | |
8434c2f1 | 884 | |
6cb4e6cc | 885 | remote_head = find_ref_by_name(refs, "HEAD"); |
7a4ee28f JK |
886 | remote_head_points_at = |
887 | guess_remote_head(remote_head, mapped_refs, 0); | |
888 | ||
889 | if (option_branch) { | |
7a4ee28f | 890 | our_head_points_at = |
9e585046 | 891 | find_remote_branch(mapped_refs, option_branch); |
7a4ee28f | 892 | |
920b691f NTND |
893 | if (!our_head_points_at) |
894 | die(_("Remote branch %s not found in upstream %s"), | |
895 | option_branch, option_origin); | |
7a4ee28f JK |
896 | } |
897 | else | |
898 | our_head_points_at = remote_head_points_at; | |
86ac7518 SR |
899 | } |
900 | else { | |
e84d7b74 | 901 | warning(_("You appear to have cloned an empty repository.")); |
5b05795c | 902 | mapped_refs = NULL; |
7a4ee28f JK |
903 | our_head_points_at = NULL; |
904 | remote_head_points_at = NULL; | |
86ac7518 SR |
905 | remote_head = NULL; |
906 | option_no_checkout = 1; | |
5cd12b85 | 907 | if (!option_bare) |
a9f2c136 | 908 | install_branch_config(0, "master", option_origin, |
5cd12b85 | 909 | "refs/heads/master"); |
86ac7518 | 910 | } |
8434c2f1 | 911 | |
31b808a0 RT |
912 | write_refspec_config(src_ref_prefix, our_head_points_at, |
913 | remote_head_points_at, &branch_top); | |
914 | ||
6f48d39f NTND |
915 | if (is_local) |
916 | clone_local(path, git_dir); | |
90498161 | 917 | else if (refs && complete_refs_before_fetch) |
6f48d39f | 918 | transport_fetch_refs(transport, mapped_refs); |
8434c2f1 | 919 | |
960b7d1c NTND |
920 | update_remote_refs(refs, mapped_refs, remote_head_points_at, |
921 | branch_top.buf, reflog_msg.buf); | |
8434c2f1 | 922 | |
f034d354 | 923 | update_head(our_head_points_at, remote_head, reflog_msg.buf); |
1db4a75c | 924 | |
6f48d39f NTND |
925 | transport_unlock_pack(transport); |
926 | transport_disconnect(transport); | |
1db4a75c | 927 | |
c39852c1 | 928 | err = checkout(); |
8434c2f1 DB |
929 | |
930 | strbuf_release(&reflog_msg); | |
b5ff37ac MV |
931 | strbuf_release(&branch_top); |
932 | strbuf_release(&key); | |
933 | strbuf_release(&value); | |
8434c2f1 | 934 | junk_pid = 0; |
dfa7a6c5 | 935 | return err; |
8434c2f1 | 936 | } |