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refs: allow for_each_replace_ref to handle arbitrary repositories
[git.git] / builtin / submodule--helper.c
bloba404df3ea494d4e4753e5ca95be06b7eed14f617
1 #include "builtin.h"
2 #include "repository.h"
3 #include "cache.h"
4 #include "config.h"
5 #include "parse-options.h"
6 #include "quote.h"
7 #include "pathspec.h"
8 #include "dir.h"
9 #include "submodule.h"
10 #include "submodule-config.h"
11 #include "string-list.h"
12 #include "run-command.h"
13 #include "remote.h"
14 #include "refs.h"
15 #include "connect.h"
16 #include "revision.h"
17 #include "diffcore.h"
18 #include "diff.h"
19 #include "object-store.h"
20
21 #define OPT_QUIET (1 << 0)
22 #define OPT_CACHED (1 << 1)
23 #define OPT_RECURSIVE (1 << 2)
24 #define OPT_FORCE (1 << 3)
25
26 typedef void (*each_submodule_fn)(const struct cache_entry *list_item,
27 void *cb_data);
28
29 static char *get_default_remote(void)
30 {
31 char *dest = NULL, *ret;
32 struct strbuf sb = STRBUF_INIT;
33 const char *refname = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
34
35 if (!refname)
36 die(_("No such ref: %s"), "HEAD");
37
38 /* detached HEAD */
39 if (!strcmp(refname, "HEAD"))
40 return xstrdup("origin");
41
42 if (!skip_prefix(refname, "refs/heads/", &refname))
43 die(_("Expecting a full ref name, got %s"), refname);
44
45 strbuf_addf(&sb, "branch.%s.remote", refname);
46 if (git_config_get_string(sb.buf, &dest))
47 ret = xstrdup("origin");
48 else
49 ret = dest;
50
51 strbuf_release(&sb);
52 return ret;
53 }
54
55 static int print_default_remote(int argc, const char **argv, const char *prefix)
56 {
57 const char *remote;
58
59 if (argc != 1)
60 die(_("submodule--helper print-default-remote takes no arguments"));
61
62 remote = get_default_remote();
63 if (remote)
64 printf("%s\n", remote);
65
66 return 0;
67 }
68
69 static int starts_with_dot_slash(const char *str)
70 {
71 return str[0] == '.' && is_dir_sep(str[1]);
72 }
73
74 static int starts_with_dot_dot_slash(const char *str)
75 {
76 return str[0] == '.' && str[1] == '.' && is_dir_sep(str[2]);
77 }
78
79 /*
80 * Returns 1 if it was the last chop before ':'.
81 */
82 static int chop_last_dir(char **remoteurl, int is_relative)
83 {
84 char *rfind = find_last_dir_sep(*remoteurl);
85 if (rfind) {
86 *rfind = '\0';
87 return 0;
88 }
89
90 rfind = strrchr(*remoteurl, ':');
91 if (rfind) {
92 *rfind = '\0';
93 return 1;
94 }
95
96 if (is_relative || !strcmp(".", *remoteurl))
97 die(_("cannot strip one component off url '%s'"),
98 *remoteurl);
99
100 free(*remoteurl);
101 *remoteurl = xstrdup(".");
102 return 0;
103 }
104
105 /*
106 * The `url` argument is the URL that navigates to the submodule origin
107 * repo. When relative, this URL is relative to the superproject origin
108 * URL repo. The `up_path` argument, if specified, is the relative
109 * path that navigates from the submodule working tree to the superproject
110 * working tree. Returns the origin URL of the submodule.
111 *
112 * Return either an absolute URL or filesystem path (if the superproject
113 * origin URL is an absolute URL or filesystem path, respectively) or a
114 * relative file system path (if the superproject origin URL is a relative
115 * file system path).
116 *
117 * When the output is a relative file system path, the path is either
118 * relative to the submodule working tree, if up_path is specified, or to
119 * the superproject working tree otherwise.
120 *
121 * NEEDSWORK: This works incorrectly on the domain and protocol part.
122 * remote_url url outcome expectation
123 * http://a.com/b ../c http://a.com/c as is
124 * http://a.com/b/ ../c http://a.com/c same as previous line, but
125 * ignore trailing slash in url
126 * http://a.com/b ../../c http://c error out
127 * http://a.com/b ../../../c http:/c error out
128 * http://a.com/b ../../../../c http:c error out
129 * http://a.com/b ../../../../../c .:c error out
130 * NEEDSWORK: Given how chop_last_dir() works, this function is broken
131 * when a local part has a colon in its path component, too.
132 */
133 static char *relative_url(const char *remote_url,
134 const char *url,
135 const char *up_path)
136 {
137 int is_relative = 0;
138 int colonsep = 0;
139 char *out;
140 char *remoteurl = xstrdup(remote_url);
141 struct strbuf sb = STRBUF_INIT;
142 size_t len = strlen(remoteurl);
143
144 if (is_dir_sep(remoteurl[len-1]))
145 remoteurl[len-1] = '\0';
146
147 if (!url_is_local_not_ssh(remoteurl) || is_absolute_path(remoteurl))
148 is_relative = 0;
149 else {
150 is_relative = 1;
151 /*
152 * Prepend a './' to ensure all relative
153 * remoteurls start with './' or '../'
154 */
155 if (!starts_with_dot_slash(remoteurl) &&
156 !starts_with_dot_dot_slash(remoteurl)) {
157 strbuf_reset(&sb);
158 strbuf_addf(&sb, "./%s", remoteurl);
159 free(remoteurl);
160 remoteurl = strbuf_detach(&sb, NULL);
161 }
162 }
163 /*
164 * When the url starts with '../', remove that and the
165 * last directory in remoteurl.
166 */
167 while (url) {
168 if (starts_with_dot_dot_slash(url)) {
169 url += 3;
170 colonsep |= chop_last_dir(&remoteurl, is_relative);
171 } else if (starts_with_dot_slash(url))
172 url += 2;
173 else
174 break;
175 }
176 strbuf_reset(&sb);
177 strbuf_addf(&sb, "%s%s%s", remoteurl, colonsep ? ":" : "/", url);
178 if (ends_with(url, "/"))
179 strbuf_setlen(&sb, sb.len - 1);
180 free(remoteurl);
181
182 if (starts_with_dot_slash(sb.buf))
183 out = xstrdup(sb.buf + 2);
184 else
185 out = xstrdup(sb.buf);
186 strbuf_reset(&sb);
187
188 if (!up_path || !is_relative)
189 return out;
190
191 strbuf_addf(&sb, "%s%s", up_path, out);
192 free(out);
193 return strbuf_detach(&sb, NULL);
194 }
195
196 static int resolve_relative_url(int argc, const char **argv, const char *prefix)
197 {
198 char *remoteurl = NULL;
199 char *remote = get_default_remote();
200 const char *up_path = NULL;
201 char *res;
202 const char *url;
203 struct strbuf sb = STRBUF_INIT;
204
205 if (argc != 2 && argc != 3)
206 die("resolve-relative-url only accepts one or two arguments");
207
208 url = argv[1];
209 strbuf_addf(&sb, "remote.%s.url", remote);
210 free(remote);
211
212 if (git_config_get_string(sb.buf, &remoteurl))
213 /* the repository is its own authoritative upstream */
214 remoteurl = xgetcwd();
215
216 if (argc == 3)
217 up_path = argv[2];
218
219 res = relative_url(remoteurl, url, up_path);
220 puts(res);
221 free(res);
222 free(remoteurl);
223 return 0;
224 }
225
226 static int resolve_relative_url_test(int argc, const char **argv, const char *prefix)
227 {
228 char *remoteurl, *res;
229 const char *up_path, *url;
230
231 if (argc != 4)
232 die("resolve-relative-url-test only accepts three arguments: <up_path> <remoteurl> <url>");
233
234 up_path = argv[1];
235 remoteurl = xstrdup(argv[2]);
236 url = argv[3];
237
238 if (!strcmp(up_path, "(null)"))
239 up_path = NULL;
240
241 res = relative_url(remoteurl, url, up_path);
242 puts(res);
243 free(res);
244 free(remoteurl);
245 return 0;
246 }
247
248 /* the result should be freed by the caller. */
249 static char *get_submodule_displaypath(const char *path, const char *prefix)
250 {
251 const char *super_prefix = get_super_prefix();
252
253 if (prefix && super_prefix) {
254 BUG("cannot have prefix '%s' and superprefix '%s'",
255 prefix, super_prefix);
256 } else if (prefix) {
257 struct strbuf sb = STRBUF_INIT;
258 char *displaypath = xstrdup(relative_path(path, prefix, &sb));
259 strbuf_release(&sb);
260 return displaypath;
261 } else if (super_prefix) {
262 return xstrfmt("%s%s", super_prefix, path);
263 } else {
264 return xstrdup(path);
265 }
266 }
267
268 static char *compute_rev_name(const char *sub_path, const char* object_id)
269 {
270 struct strbuf sb = STRBUF_INIT;
271 const char ***d;
272
273 static const char *describe_bare[] = { NULL };
274
275 static const char *describe_tags[] = { "--tags", NULL };
276
277 static const char *describe_contains[] = { "--contains", NULL };
278
279 static const char *describe_all_always[] = { "--all", "--always", NULL };
280
281 static const char **describe_argv[] = { describe_bare, describe_tags,
282 describe_contains,
283 describe_all_always, NULL };
284
285 for (d = describe_argv; *d; d++) {
286 struct child_process cp = CHILD_PROCESS_INIT;
287 prepare_submodule_repo_env(&cp.env_array);
288 cp.dir = sub_path;
289 cp.git_cmd = 1;
290 cp.no_stderr = 1;
291
292 argv_array_push(&cp.args, "describe");
293 argv_array_pushv(&cp.args, *d);
294 argv_array_push(&cp.args, object_id);
295
296 if (!capture_command(&cp, &sb, 0)) {
297 strbuf_strip_suffix(&sb, "\n");
298 return strbuf_detach(&sb, NULL);
299 }
300 }
301
302 strbuf_release(&sb);
303 return NULL;
304 }
305
306 struct module_list {
307 const struct cache_entry **entries;
308 int alloc, nr;
309 };
310 #define MODULE_LIST_INIT { NULL, 0, 0 }
311
312 static int module_list_compute(int argc, const char **argv,
313 const char *prefix,
314 struct pathspec *pathspec,
315 struct module_list *list)
316 {
317 int i, result = 0;
318 char *ps_matched = NULL;
319 parse_pathspec(pathspec, 0,
320 PATHSPEC_PREFER_FULL,
321 prefix, argv);
322
323 if (pathspec->nr)
324 ps_matched = xcalloc(pathspec->nr, 1);
325
326 if (read_cache() < 0)
327 die(_("index file corrupt"));
328
329 for (i = 0; i < active_nr; i++) {
330 const struct cache_entry *ce = active_cache[i];
331
332 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce),
333 0, ps_matched, 1) ||
334 !S_ISGITLINK(ce->ce_mode))
335 continue;
336
337 ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
338 list->entries[list->nr++] = ce;
339 while (i + 1 < active_nr &&
340 !strcmp(ce->name, active_cache[i + 1]->name))
341 /*
342 * Skip entries with the same name in different stages
343 * to make sure an entry is returned only once.
344 */
345 i++;
346 }
347
348 if (ps_matched && report_path_error(ps_matched, pathspec, prefix))
349 result = -1;
350
351 free(ps_matched);
352
353 return result;
354 }
355
356 static void module_list_active(struct module_list *list)
357 {
358 int i;
359 struct module_list active_modules = MODULE_LIST_INIT;
360
361 for (i = 0; i < list->nr; i++) {
362 const struct cache_entry *ce = list->entries[i];
363
364 if (!is_submodule_active(the_repository, ce->name))
365 continue;
366
367 ALLOC_GROW(active_modules.entries,
368 active_modules.nr + 1,
369 active_modules.alloc);
370 active_modules.entries[active_modules.nr++] = ce;
371 }
372
373 free(list->entries);
374 *list = active_modules;
375 }
376
377 static char *get_up_path(const char *path)
378 {
379 int i;
380 struct strbuf sb = STRBUF_INIT;
381
382 for (i = count_slashes(path); i; i--)
383 strbuf_addstr(&sb, "../");
384
385 /*
386 * Check if 'path' ends with slash or not
387 * for having the same output for dir/sub_dir
388 * and dir/sub_dir/
389 */
390 if (!is_dir_sep(path[strlen(path) - 1]))
391 strbuf_addstr(&sb, "../");
392
393 return strbuf_detach(&sb, NULL);
394 }
395
396 static int module_list(int argc, const char **argv, const char *prefix)
397 {
398 int i;
399 struct pathspec pathspec;
400 struct module_list list = MODULE_LIST_INIT;
401
402 struct option module_list_options[] = {
403 OPT_STRING(0, "prefix", &prefix,
404 N_("path"),
405 N_("alternative anchor for relative paths")),
406 OPT_END()
407 };
408
409 const char *const git_submodule_helper_usage[] = {
410 N_("git submodule--helper list [--prefix=<path>] [<path>...]"),
411 NULL
412 };
413
414 argc = parse_options(argc, argv, prefix, module_list_options,
415 git_submodule_helper_usage, 0);
416
417 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
418 return 1;
419
420 for (i = 0; i < list.nr; i++) {
421 const struct cache_entry *ce = list.entries[i];
422
423 if (ce_stage(ce))
424 printf("%06o %s U\t", ce->ce_mode, sha1_to_hex(null_sha1));
425 else
426 printf("%06o %s %d\t", ce->ce_mode,
427 oid_to_hex(&ce->oid), ce_stage(ce));
428
429 fprintf(stdout, "%s\n", ce->name);
430 }
431 return 0;
432 }
433
434 static void for_each_listed_submodule(const struct module_list *list,
435 each_submodule_fn fn, void *cb_data)
436 {
437 int i;
438 for (i = 0; i < list->nr; i++)
439 fn(list->entries[i], cb_data);
440 }
441
442 struct init_cb {
443 const char *prefix;
444 unsigned int flags;
445 };
446
447 #define INIT_CB_INIT { NULL, 0 }
448
449 static void init_submodule(const char *path, const char *prefix,
450 unsigned int flags)
451 {
452 const struct submodule *sub;
453 struct strbuf sb = STRBUF_INIT;
454 char *upd = NULL, *url = NULL, *displaypath;
455
456 displaypath = get_submodule_displaypath(path, prefix);
457
458 sub = submodule_from_path(&null_oid, path);
459
460 if (!sub)
461 die(_("No url found for submodule path '%s' in .gitmodules"),
462 displaypath);
463
464 /*
465 * NEEDSWORK: In a multi-working-tree world, this needs to be
466 * set in the per-worktree config.
467 *
468 * Set active flag for the submodule being initialized
469 */
470 if (!is_submodule_active(the_repository, path)) {
471 strbuf_addf(&sb, "submodule.%s.active", sub->name);
472 git_config_set_gently(sb.buf, "true");
473 strbuf_reset(&sb);
474 }
475
476 /*
477 * Copy url setting when it is not set yet.
478 * To look up the url in .git/config, we must not fall back to
479 * .gitmodules, so look it up directly.
480 */
481 strbuf_addf(&sb, "submodule.%s.url", sub->name);
482 if (git_config_get_string(sb.buf, &url)) {
483 if (!sub->url)
484 die(_("No url found for submodule path '%s' in .gitmodules"),
485 displaypath);
486
487 url = xstrdup(sub->url);
488
489 /* Possibly a url relative to parent */
490 if (starts_with_dot_dot_slash(url) ||
491 starts_with_dot_slash(url)) {
492 char *remoteurl, *relurl;
493 char *remote = get_default_remote();
494 struct strbuf remotesb = STRBUF_INIT;
495 strbuf_addf(&remotesb, "remote.%s.url", remote);
496 free(remote);
497
498 if (git_config_get_string(remotesb.buf, &remoteurl)) {
499 warning(_("could not lookup configuration '%s'. Assuming this repository is its own authoritative upstream."), remotesb.buf);
500 remoteurl = xgetcwd();
501 }
502 relurl = relative_url(remoteurl, url, NULL);
503 strbuf_release(&remotesb);
504 free(remoteurl);
505 free(url);
506 url = relurl;
507 }
508
509 if (git_config_set_gently(sb.buf, url))
510 die(_("Failed to register url for submodule path '%s'"),
511 displaypath);
512 if (!(flags & OPT_QUIET))
513 fprintf(stderr,
514 _("Submodule '%s' (%s) registered for path '%s'\n"),
515 sub->name, url, displaypath);
516 }
517 strbuf_reset(&sb);
518
519 /* Copy "update" setting when it is not set yet */
520 strbuf_addf(&sb, "submodule.%s.update", sub->name);
521 if (git_config_get_string(sb.buf, &upd) &&
522 sub->update_strategy.type != SM_UPDATE_UNSPECIFIED) {
523 if (sub->update_strategy.type == SM_UPDATE_COMMAND) {
524 fprintf(stderr, _("warning: command update mode suggested for submodule '%s'\n"),
525 sub->name);
526 upd = xstrdup("none");
527 } else
528 upd = xstrdup(submodule_strategy_to_string(&sub->update_strategy));
529
530 if (git_config_set_gently(sb.buf, upd))
531 die(_("Failed to register update mode for submodule path '%s'"), displaypath);
532 }
533 strbuf_release(&sb);
534 free(displaypath);
535 free(url);
536 free(upd);
537 }
538
539 static void init_submodule_cb(const struct cache_entry *list_item, void *cb_data)
540 {
541 struct init_cb *info = cb_data;
542 init_submodule(list_item->name, info->prefix, info->flags);
543 }
544
545 static int module_init(int argc, const char **argv, const char *prefix)
546 {
547 struct init_cb info = INIT_CB_INIT;
548 struct pathspec pathspec;
549 struct module_list list = MODULE_LIST_INIT;
550 int quiet = 0;
551
552 struct option module_init_options[] = {
553 OPT__QUIET(&quiet, N_("Suppress output for initializing a submodule")),
554 OPT_END()
555 };
556
557 const char *const git_submodule_helper_usage[] = {
558 N_("git submodule--helper init [<path>]"),
559 NULL
560 };
561
562 argc = parse_options(argc, argv, prefix, module_init_options,
563 git_submodule_helper_usage, 0);
564
565 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
566 return 1;
567
568 /*
569 * If there are no path args and submodule.active is set then,
570 * by default, only initialize 'active' modules.
571 */
572 if (!argc && git_config_get_value_multi("submodule.active"))
573 module_list_active(&list);
574
575 info.prefix = prefix;
576 if (quiet)
577 info.flags |= OPT_QUIET;
578
579 for_each_listed_submodule(&list, init_submodule_cb, &info);
580
581 return 0;
582 }
583
584 struct status_cb {
585 const char *prefix;
586 unsigned int flags;
587 };
588
589 #define STATUS_CB_INIT { NULL, 0 }
590
591 static void print_status(unsigned int flags, char state, const char *path,
592 const struct object_id *oid, const char *displaypath)
593 {
594 if (flags & OPT_QUIET)
595 return;
596
597 printf("%c%s %s", state, oid_to_hex(oid), displaypath);
598
599 if (state == ' ' || state == '+')
600 printf(" (%s)", compute_rev_name(path, oid_to_hex(oid)));
601
602 printf("\n");
603 }
604
605 static int handle_submodule_head_ref(const char *refname,
606 const struct object_id *oid, int flags,
607 void *cb_data)
608 {
609 struct object_id *output = cb_data;
610 if (oid)
611 oidcpy(output, oid);
612
613 return 0;
614 }
615
616 static void status_submodule(const char *path, const struct object_id *ce_oid,
617 unsigned int ce_flags, const char *prefix,
618 unsigned int flags)
619 {
620 char *displaypath;
621 struct argv_array diff_files_args = ARGV_ARRAY_INIT;
622 struct rev_info rev;
623 int diff_files_result;
624
625 if (!submodule_from_path(&null_oid, path))
626 die(_("no submodule mapping found in .gitmodules for path '%s'"),
627 path);
628
629 displaypath = get_submodule_displaypath(path, prefix);
630
631 if ((CE_STAGEMASK & ce_flags) >> CE_STAGESHIFT) {
632 print_status(flags, 'U', path, &null_oid, displaypath);
633 goto cleanup;
634 }
635
636 if (!is_submodule_active(the_repository, path)) {
637 print_status(flags, '-', path, ce_oid, displaypath);
638 goto cleanup;
639 }
640
641 argv_array_pushl(&diff_files_args, "diff-files",
642 "--ignore-submodules=dirty", "--quiet", "--",
643 path, NULL);
644
645 git_config(git_diff_basic_config, NULL);
646 init_revisions(&rev, prefix);
647 rev.abbrev = 0;
648 diff_files_args.argc = setup_revisions(diff_files_args.argc,
649 diff_files_args.argv,
650 &rev, NULL);
651 diff_files_result = run_diff_files(&rev, 0);
652
653 if (!diff_result_code(&rev.diffopt, diff_files_result)) {
654 print_status(flags, ' ', path, ce_oid,
655 displaypath);
656 } else if (!(flags & OPT_CACHED)) {
657 struct object_id oid;
658 struct ref_store *refs = get_submodule_ref_store(path);
659
660 if (!refs) {
661 print_status(flags, '-', path, ce_oid, displaypath);
662 goto cleanup;
663 }
664 if (refs_head_ref(refs, handle_submodule_head_ref, &oid))
665 die(_("could not resolve HEAD ref inside the "
666 "submodule '%s'"), path);
667
668 print_status(flags, '+', path, &oid, displaypath);
669 } else {
670 print_status(flags, '+', path, ce_oid, displaypath);
671 }
672
673 if (flags & OPT_RECURSIVE) {
674 struct child_process cpr = CHILD_PROCESS_INIT;
675
676 cpr.git_cmd = 1;
677 cpr.dir = path;
678 prepare_submodule_repo_env(&cpr.env_array);
679
680 argv_array_push(&cpr.args, "--super-prefix");
681 argv_array_pushf(&cpr.args, "%s/", displaypath);
682 argv_array_pushl(&cpr.args, "submodule--helper", "status",
683 "--recursive", NULL);
684
685 if (flags & OPT_CACHED)
686 argv_array_push(&cpr.args, "--cached");
687
688 if (flags & OPT_QUIET)
689 argv_array_push(&cpr.args, "--quiet");
690
691 if (run_command(&cpr))
692 die(_("failed to recurse into submodule '%s'"), path);
693 }
694
695 cleanup:
696 argv_array_clear(&diff_files_args);
697 free(displaypath);
698 }
699
700 static void status_submodule_cb(const struct cache_entry *list_item,
701 void *cb_data)
702 {
703 struct status_cb *info = cb_data;
704 status_submodule(list_item->name, &list_item->oid, list_item->ce_flags,
705 info->prefix, info->flags);
706 }
707
708 static int module_status(int argc, const char **argv, const char *prefix)
709 {
710 struct status_cb info = STATUS_CB_INIT;
711 struct pathspec pathspec;
712 struct module_list list = MODULE_LIST_INIT;
713 int quiet = 0;
714
715 struct option module_status_options[] = {
716 OPT__QUIET(&quiet, N_("Suppress submodule status output")),
717 OPT_BIT(0, "cached", &info.flags, N_("Use commit stored in the index instead of the one stored in the submodule HEAD"), OPT_CACHED),
718 OPT_BIT(0, "recursive", &info.flags, N_("recurse into nested submodules"), OPT_RECURSIVE),
719 OPT_END()
720 };
721
722 const char *const git_submodule_helper_usage[] = {
723 N_("git submodule status [--quiet] [--cached] [--recursive] [<path>...]"),
724 NULL
725 };
726
727 argc = parse_options(argc, argv, prefix, module_status_options,
728 git_submodule_helper_usage, 0);
729
730 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
731 return 1;
732
733 info.prefix = prefix;
734 if (quiet)
735 info.flags |= OPT_QUIET;
736
737 for_each_listed_submodule(&list, status_submodule_cb, &info);
738
739 return 0;
740 }
741
742 static int module_name(int argc, const char **argv, const char *prefix)
743 {
744 const struct submodule *sub;
745
746 if (argc != 2)
747 usage(_("git submodule--helper name <path>"));
748
749 sub = submodule_from_path(&null_oid, argv[1]);
750
751 if (!sub)
752 die(_("no submodule mapping found in .gitmodules for path '%s'"),
753 argv[1]);
754
755 printf("%s\n", sub->name);
756
757 return 0;
758 }
759
760 struct sync_cb {
761 const char *prefix;
762 unsigned int flags;
763 };
764
765 #define SYNC_CB_INIT { NULL, 0 }
766
767 static void sync_submodule(const char *path, const char *prefix,
768 unsigned int flags)
769 {
770 const struct submodule *sub;
771 char *remote_key = NULL;
772 char *sub_origin_url, *super_config_url, *displaypath;
773 struct strbuf sb = STRBUF_INIT;
774 struct child_process cp = CHILD_PROCESS_INIT;
775 char *sub_config_path = NULL;
776
777 if (!is_submodule_active(the_repository, path))
778 return;
779
780 sub = submodule_from_path(&null_oid, path);
781
782 if (sub && sub->url) {
783 if (starts_with_dot_dot_slash(sub->url) ||
784 starts_with_dot_slash(sub->url)) {
785 char *remote_url, *up_path;
786 char *remote = get_default_remote();
787 strbuf_addf(&sb, "remote.%s.url", remote);
788
789 if (git_config_get_string(sb.buf, &remote_url))
790 remote_url = xgetcwd();
791
792 up_path = get_up_path(path);
793 sub_origin_url = relative_url(remote_url, sub->url, up_path);
794 super_config_url = relative_url(remote_url, sub->url, NULL);
795
796 free(remote);
797 free(up_path);
798 free(remote_url);
799 } else {
800 sub_origin_url = xstrdup(sub->url);
801 super_config_url = xstrdup(sub->url);
802 }
803 } else {
804 sub_origin_url = xstrdup("");
805 super_config_url = xstrdup("");
806 }
807
808 displaypath = get_submodule_displaypath(path, prefix);
809
810 if (!(flags & OPT_QUIET))
811 printf(_("Synchronizing submodule url for '%s'\n"),
812 displaypath);
813
814 strbuf_reset(&sb);
815 strbuf_addf(&sb, "submodule.%s.url", sub->name);
816 if (git_config_set_gently(sb.buf, super_config_url))
817 die(_("failed to register url for submodule path '%s'"),
818 displaypath);
819
820 if (!is_submodule_populated_gently(path, NULL))
821 goto cleanup;
822
823 prepare_submodule_repo_env(&cp.env_array);
824 cp.git_cmd = 1;
825 cp.dir = path;
826 argv_array_pushl(&cp.args, "submodule--helper",
827 "print-default-remote", NULL);
828
829 strbuf_reset(&sb);
830 if (capture_command(&cp, &sb, 0))
831 die(_("failed to get the default remote for submodule '%s'"),
832 path);
833
834 strbuf_strip_suffix(&sb, "\n");
835 remote_key = xstrfmt("remote.%s.url", sb.buf);
836
837 strbuf_reset(&sb);
838 submodule_to_gitdir(&sb, path);
839 strbuf_addstr(&sb, "/config");
840
841 if (git_config_set_in_file_gently(sb.buf, remote_key, sub_origin_url))
842 die(_("failed to update remote for submodule '%s'"),
843 path);
844
845 if (flags & OPT_RECURSIVE) {
846 struct child_process cpr = CHILD_PROCESS_INIT;
847
848 cpr.git_cmd = 1;
849 cpr.dir = path;
850 prepare_submodule_repo_env(&cpr.env_array);
851
852 argv_array_push(&cpr.args, "--super-prefix");
853 argv_array_pushf(&cpr.args, "%s/", displaypath);
854 argv_array_pushl(&cpr.args, "submodule--helper", "sync",
855 "--recursive", NULL);
856
857 if (flags & OPT_QUIET)
858 argv_array_push(&cpr.args, "--quiet");
859
860 if (run_command(&cpr))
861 die(_("failed to recurse into submodule '%s'"),
862 path);
863 }
864
865 cleanup:
866 free(super_config_url);
867 free(sub_origin_url);
868 strbuf_release(&sb);
869 free(remote_key);
870 free(displaypath);
871 free(sub_config_path);
872 }
873
874 static void sync_submodule_cb(const struct cache_entry *list_item, void *cb_data)
875 {
876 struct sync_cb *info = cb_data;
877 sync_submodule(list_item->name, info->prefix, info->flags);
878
879 }
880
881 static int module_sync(int argc, const char **argv, const char *prefix)
882 {
883 struct sync_cb info = SYNC_CB_INIT;
884 struct pathspec pathspec;
885 struct module_list list = MODULE_LIST_INIT;
886 int quiet = 0;
887 int recursive = 0;
888
889 struct option module_sync_options[] = {
890 OPT__QUIET(&quiet, N_("Suppress output of synchronizing submodule url")),
891 OPT_BOOL(0, "recursive", &recursive,
892 N_("Recurse into nested submodules")),
893 OPT_END()
894 };
895
896 const char *const git_submodule_helper_usage[] = {
897 N_("git submodule--helper sync [--quiet] [--recursive] [<path>]"),
898 NULL
899 };
900
901 argc = parse_options(argc, argv, prefix, module_sync_options,
902 git_submodule_helper_usage, 0);
903
904 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
905 return 1;
906
907 info.prefix = prefix;
908 if (quiet)
909 info.flags |= OPT_QUIET;
910 if (recursive)
911 info.flags |= OPT_RECURSIVE;
912
913 for_each_listed_submodule(&list, sync_submodule_cb, &info);
914
915 return 0;
916 }
917
918 struct deinit_cb {
919 const char *prefix;
920 unsigned int flags;
921 };
922 #define DEINIT_CB_INIT { NULL, 0 }
923
924 static void deinit_submodule(const char *path, const char *prefix,
925 unsigned int flags)
926 {
927 const struct submodule *sub;
928 char *displaypath = NULL;
929 struct child_process cp_config = CHILD_PROCESS_INIT;
930 struct strbuf sb_config = STRBUF_INIT;
931 char *sub_git_dir = xstrfmt("%s/.git", path);
932
933 sub = submodule_from_path(&null_oid, path);
934
935 if (!sub || !sub->name)
936 goto cleanup;
937
938 displaypath = get_submodule_displaypath(path, prefix);
939
940 /* remove the submodule work tree (unless the user already did it) */
941 if (is_directory(path)) {
942 struct strbuf sb_rm = STRBUF_INIT;
943 const char *format;
944
945 /*
946 * protect submodules containing a .git directory
947 * NEEDSWORK: instead of dying, automatically call
948 * absorbgitdirs and (possibly) warn.
949 */
950 if (is_directory(sub_git_dir))
951 die(_("Submodule work tree '%s' contains a .git "
952 "directory (use 'rm -rf' if you really want "
953 "to remove it including all of its history)"),
954 displaypath);
955
956 if (!(flags & OPT_FORCE)) {
957 struct child_process cp_rm = CHILD_PROCESS_INIT;
958 cp_rm.git_cmd = 1;
959 argv_array_pushl(&cp_rm.args, "rm", "-qn",
960 path, NULL);
961
962 if (run_command(&cp_rm))
963 die(_("Submodule work tree '%s' contains local "
964 "modifications; use '-f' to discard them"),
965 displaypath);
966 }
967
968 strbuf_addstr(&sb_rm, path);
969
970 if (!remove_dir_recursively(&sb_rm, 0))
971 format = _("Cleared directory '%s'\n");
972 else
973 format = _("Could not remove submodule work tree '%s'\n");
974
975 if (!(flags & OPT_QUIET))
976 printf(format, displaypath);
977
978 strbuf_release(&sb_rm);
979 }
980
981 if (mkdir(path, 0777))
982 printf(_("could not create empty submodule directory %s"),
983 displaypath);
984
985 cp_config.git_cmd = 1;
986 argv_array_pushl(&cp_config.args, "config", "--get-regexp", NULL);
987 argv_array_pushf(&cp_config.args, "submodule.%s\\.", sub->name);
988
989 /* remove the .git/config entries (unless the user already did it) */
990 if (!capture_command(&cp_config, &sb_config, 0) && sb_config.len) {
991 char *sub_key = xstrfmt("submodule.%s", sub->name);
992 /*
993 * remove the whole section so we have a clean state when
994 * the user later decides to init this submodule again
995 */
996 git_config_rename_section_in_file(NULL, sub_key, NULL);
997 if (!(flags & OPT_QUIET))
998 printf(_("Submodule '%s' (%s) unregistered for path '%s'\n"),
999 sub->name, sub->url, displaypath);
1000 free(sub_key);
1001 }
1002
1003 cleanup:
1004 free(displaypath);
1005 free(sub_git_dir);
1006 strbuf_release(&sb_config);
1007 }
1008
1009 static void deinit_submodule_cb(const struct cache_entry *list_item,
1010 void *cb_data)
1011 {
1012 struct deinit_cb *info = cb_data;
1013 deinit_submodule(list_item->name, info->prefix, info->flags);
1014 }
1015
1016 static int module_deinit(int argc, const char **argv, const char *prefix)
1017 {
1018 struct deinit_cb info = DEINIT_CB_INIT;
1019 struct pathspec pathspec;
1020 struct module_list list = MODULE_LIST_INIT;
1021 int quiet = 0;
1022 int force = 0;
1023 int all = 0;
1024
1025 struct option module_deinit_options[] = {
1026 OPT__QUIET(&quiet, N_("Suppress submodule status output")),
1027 OPT__FORCE(&force, N_("Remove submodule working trees even if they contain local changes"), 0),
1028 OPT_BOOL(0, "all", &all, N_("Unregister all submodules")),
1029 OPT_END()
1030 };
1031
1032 const char *const git_submodule_helper_usage[] = {
1033 N_("git submodule deinit [--quiet] [-f | --force] [--all | [--] [<path>...]]"),
1034 NULL
1035 };
1036
1037 argc = parse_options(argc, argv, prefix, module_deinit_options,
1038 git_submodule_helper_usage, 0);
1039
1040 if (all && argc) {
1041 error("pathspec and --all are incompatible");
1042 usage_with_options(git_submodule_helper_usage,
1043 module_deinit_options);
1044 }
1045
1046 if (!argc && !all)
1047 die(_("Use '--all' if you really want to deinitialize all submodules"));
1048
1049 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
1050 return 1;
1051
1052 info.prefix = prefix;
1053 if (quiet)
1054 info.flags |= OPT_QUIET;
1055 if (force)
1056 info.flags |= OPT_FORCE;
1057
1058 for_each_listed_submodule(&list, deinit_submodule_cb, &info);
1059
1060 return 0;
1061 }
1062
1063 static int clone_submodule(const char *path, const char *gitdir, const char *url,
1064 const char *depth, struct string_list *reference,
1065 int quiet, int progress)
1066 {
1067 struct child_process cp = CHILD_PROCESS_INIT;
1068
1069 argv_array_push(&cp.args, "clone");
1070 argv_array_push(&cp.args, "--no-checkout");
1071 if (quiet)
1072 argv_array_push(&cp.args, "--quiet");
1073 if (progress)
1074 argv_array_push(&cp.args, "--progress");
1075 if (depth && *depth)
1076 argv_array_pushl(&cp.args, "--depth", depth, NULL);
1077 if (reference->nr) {
1078 struct string_list_item *item;
1079 for_each_string_list_item(item, reference)
1080 argv_array_pushl(&cp.args, "--reference",
1081 item->string, NULL);
1082 }
1083 if (gitdir && *gitdir)
1084 argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
1085
1086 argv_array_push(&cp.args, url);
1087 argv_array_push(&cp.args, path);
1088
1089 cp.git_cmd = 1;
1090 prepare_submodule_repo_env(&cp.env_array);
1091 cp.no_stdin = 1;
1092
1093 return run_command(&cp);
1094 }
1095
1096 struct submodule_alternate_setup {
1097 const char *submodule_name;
1098 enum SUBMODULE_ALTERNATE_ERROR_MODE {
1099 SUBMODULE_ALTERNATE_ERROR_DIE,
1100 SUBMODULE_ALTERNATE_ERROR_INFO,
1101 SUBMODULE_ALTERNATE_ERROR_IGNORE
1102 } error_mode;
1103 struct string_list *reference;
1104 };
1105 #define SUBMODULE_ALTERNATE_SETUP_INIT { NULL, \
1106 SUBMODULE_ALTERNATE_ERROR_IGNORE, NULL }
1107
1108 static int add_possible_reference_from_superproject(
1109 struct alternate_object_database *alt, void *sas_cb)
1110 {
1111 struct submodule_alternate_setup *sas = sas_cb;
1112
1113 /*
1114 * If the alternate object store is another repository, try the
1115 * standard layout with .git/(modules/<name>)+/objects
1116 */
1117 if (ends_with(alt->path, "/objects")) {
1118 char *sm_alternate;
1119 struct strbuf sb = STRBUF_INIT;
1120 struct strbuf err = STRBUF_INIT;
1121 strbuf_add(&sb, alt->path, strlen(alt->path) - strlen("objects"));
1122
1123 /*
1124 * We need to end the new path with '/' to mark it as a dir,
1125 * otherwise a submodule name containing '/' will be broken
1126 * as the last part of a missing submodule reference would
1127 * be taken as a file name.
1128 */
1129 strbuf_addf(&sb, "modules/%s/", sas->submodule_name);
1130
1131 sm_alternate = compute_alternate_path(sb.buf, &err);
1132 if (sm_alternate) {
1133 string_list_append(sas->reference, xstrdup(sb.buf));
1134 free(sm_alternate);
1135 } else {
1136 switch (sas->error_mode) {
1137 case SUBMODULE_ALTERNATE_ERROR_DIE:
1138 die(_("submodule '%s' cannot add alternate: %s"),
1139 sas->submodule_name, err.buf);
1140 case SUBMODULE_ALTERNATE_ERROR_INFO:
1141 fprintf(stderr, _("submodule '%s' cannot add alternate: %s"),
1142 sas->submodule_name, err.buf);
1143 case SUBMODULE_ALTERNATE_ERROR_IGNORE:
1144 ; /* nothing */
1145 }
1146 }
1147 strbuf_release(&sb);
1148 }
1149
1150 return 0;
1151 }
1152
1153 static void prepare_possible_alternates(const char *sm_name,
1154 struct string_list *reference)
1155 {
1156 char *sm_alternate = NULL, *error_strategy = NULL;
1157 struct submodule_alternate_setup sas = SUBMODULE_ALTERNATE_SETUP_INIT;
1158
1159 git_config_get_string("submodule.alternateLocation", &sm_alternate);
1160 if (!sm_alternate)
1161 return;
1162
1163 git_config_get_string("submodule.alternateErrorStrategy", &error_strategy);
1164
1165 if (!error_strategy)
1166 error_strategy = xstrdup("die");
1167
1168 sas.submodule_name = sm_name;
1169 sas.reference = reference;
1170 if (!strcmp(error_strategy, "die"))
1171 sas.error_mode = SUBMODULE_ALTERNATE_ERROR_DIE;
1172 else if (!strcmp(error_strategy, "info"))
1173 sas.error_mode = SUBMODULE_ALTERNATE_ERROR_INFO;
1174 else if (!strcmp(error_strategy, "ignore"))
1175 sas.error_mode = SUBMODULE_ALTERNATE_ERROR_IGNORE;
1176 else
1177 die(_("Value '%s' for submodule.alternateErrorStrategy is not recognized"), error_strategy);
1178
1179 if (!strcmp(sm_alternate, "superproject"))
1180 foreach_alt_odb(add_possible_reference_from_superproject, &sas);
1181 else if (!strcmp(sm_alternate, "no"))
1182 ; /* do nothing */
1183 else
1184 die(_("Value '%s' for submodule.alternateLocation is not recognized"), sm_alternate);
1185
1186 free(sm_alternate);
1187 free(error_strategy);
1188 }
1189
1190 static int module_clone(int argc, const char **argv, const char *prefix)
1191 {
1192 const char *name = NULL, *url = NULL, *depth = NULL;
1193 int quiet = 0;
1194 int progress = 0;
1195 char *p, *path = NULL, *sm_gitdir;
1196 struct strbuf sb = STRBUF_INIT;
1197 struct string_list reference = STRING_LIST_INIT_NODUP;
1198 char *sm_alternate = NULL, *error_strategy = NULL;
1199
1200 struct option module_clone_options[] = {
1201 OPT_STRING(0, "prefix", &prefix,
1202 N_("path"),
1203 N_("alternative anchor for relative paths")),
1204 OPT_STRING(0, "path", &path,
1205 N_("path"),
1206 N_("where the new submodule will be cloned to")),
1207 OPT_STRING(0, "name", &name,
1208 N_("string"),
1209 N_("name of the new submodule")),
1210 OPT_STRING(0, "url", &url,
1211 N_("string"),
1212 N_("url where to clone the submodule from")),
1213 OPT_STRING_LIST(0, "reference", &reference,
1214 N_("repo"),
1215 N_("reference repository")),
1216 OPT_STRING(0, "depth", &depth,
1217 N_("string"),
1218 N_("depth for shallow clones")),
1219 OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
1220 OPT_BOOL(0, "progress", &progress,
1221 N_("force cloning progress")),
1222 OPT_END()
1223 };
1224
1225 const char *const git_submodule_helper_usage[] = {
1226 N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
1227 "[--reference <repository>] [--name <name>] [--depth <depth>] "
1228 "--url <url> --path <path>"),
1229 NULL
1230 };
1231
1232 argc = parse_options(argc, argv, prefix, module_clone_options,
1233 git_submodule_helper_usage, 0);
1234
1235 if (argc || !url || !path || !*path)
1236 usage_with_options(git_submodule_helper_usage,
1237 module_clone_options);
1238
1239 strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
1240 sm_gitdir = absolute_pathdup(sb.buf);
1241 strbuf_reset(&sb);
1242
1243 if (!is_absolute_path(path)) {
1244 strbuf_addf(&sb, "%s/%s", get_git_work_tree(), path);
1245 path = strbuf_detach(&sb, NULL);
1246 } else
1247 path = xstrdup(path);
1248
1249 if (!file_exists(sm_gitdir)) {
1250 if (safe_create_leading_directories_const(sm_gitdir) < 0)
1251 die(_("could not create directory '%s'"), sm_gitdir);
1252
1253 prepare_possible_alternates(name, &reference);
1254
1255 if (clone_submodule(path, sm_gitdir, url, depth, &reference,
1256 quiet, progress))
1257 die(_("clone of '%s' into submodule path '%s' failed"),
1258 url, path);
1259 } else {
1260 if (safe_create_leading_directories_const(path) < 0)
1261 die(_("could not create directory '%s'"), path);
1262 strbuf_addf(&sb, "%s/index", sm_gitdir);
1263 unlink_or_warn(sb.buf);
1264 strbuf_reset(&sb);
1265 }
1266
1267 /* Connect module worktree and git dir */
1268 connect_work_tree_and_git_dir(path, sm_gitdir);
1269
1270 p = git_pathdup_submodule(path, "config");
1271 if (!p)
1272 die(_("could not get submodule directory for '%s'"), path);
1273
1274 /* setup alternateLocation and alternateErrorStrategy in the cloned submodule if needed */
1275 git_config_get_string("submodule.alternateLocation", &sm_alternate);
1276 if (sm_alternate)
1277 git_config_set_in_file(p, "submodule.alternateLocation",
1278 sm_alternate);
1279 git_config_get_string("submodule.alternateErrorStrategy", &error_strategy);
1280 if (error_strategy)
1281 git_config_set_in_file(p, "submodule.alternateErrorStrategy",
1282 error_strategy);
1283
1284 free(sm_alternate);
1285 free(error_strategy);
1286
1287 strbuf_release(&sb);
1288 free(sm_gitdir);
1289 free(path);
1290 free(p);
1291 return 0;
1292 }
1293
1294 struct submodule_update_clone {
1295 /* index into 'list', the list of submodules to look into for cloning */
1296 int current;
1297 struct module_list list;
1298 unsigned warn_if_uninitialized : 1;
1299
1300 /* update parameter passed via commandline */
1301 struct submodule_update_strategy update;
1302
1303 /* configuration parameters which are passed on to the children */
1304 int progress;
1305 int quiet;
1306 int recommend_shallow;
1307 struct string_list references;
1308 const char *depth;
1309 const char *recursive_prefix;
1310 const char *prefix;
1311
1312 /* Machine-readable status lines to be consumed by git-submodule.sh */
1313 struct string_list projectlines;
1314
1315 /* If we want to stop as fast as possible and return an error */
1316 unsigned quickstop : 1;
1317
1318 /* failed clones to be retried again */
1319 const struct cache_entry **failed_clones;
1320 int failed_clones_nr, failed_clones_alloc;
1321 };
1322 #define SUBMODULE_UPDATE_CLONE_INIT {0, MODULE_LIST_INIT, 0, \
1323 SUBMODULE_UPDATE_STRATEGY_INIT, 0, 0, -1, STRING_LIST_INIT_DUP, \
1324 NULL, NULL, NULL, \
1325 STRING_LIST_INIT_DUP, 0, NULL, 0, 0}
1326
1327
1328 static void next_submodule_warn_missing(struct submodule_update_clone *suc,
1329 struct strbuf *out, const char *displaypath)
1330 {
1331 /*
1332 * Only mention uninitialized submodules when their
1333 * paths have been specified.
1334 */
1335 if (suc->warn_if_uninitialized) {
1336 strbuf_addf(out,
1337 _("Submodule path '%s' not initialized"),
1338 displaypath);
1339 strbuf_addch(out, '\n');
1340 strbuf_addstr(out,
1341 _("Maybe you want to use 'update --init'?"));
1342 strbuf_addch(out, '\n');
1343 }
1344 }
1345
1346 /**
1347 * Determine whether 'ce' needs to be cloned. If so, prepare the 'child' to
1348 * run the clone. Returns 1 if 'ce' needs to be cloned, 0 otherwise.
1349 */
1350 static int prepare_to_clone_next_submodule(const struct cache_entry *ce,
1351 struct child_process *child,
1352 struct submodule_update_clone *suc,
1353 struct strbuf *out)
1354 {
1355 const struct submodule *sub = NULL;
1356 const char *url = NULL;
1357 const char *update_string;
1358 enum submodule_update_type update_type;
1359 char *key;
1360 struct strbuf displaypath_sb = STRBUF_INIT;
1361 struct strbuf sb = STRBUF_INIT;
1362 const char *displaypath = NULL;
1363 int needs_cloning = 0;
1364
1365 if (ce_stage(ce)) {
1366 if (suc->recursive_prefix)
1367 strbuf_addf(&sb, "%s/%s", suc->recursive_prefix, ce->name);
1368 else
1369 strbuf_addstr(&sb, ce->name);
1370 strbuf_addf(out, _("Skipping unmerged submodule %s"), sb.buf);
1371 strbuf_addch(out, '\n');
1372 goto cleanup;
1373 }
1374
1375 sub = submodule_from_path(&null_oid, ce->name);
1376
1377 if (suc->recursive_prefix)
1378 displaypath = relative_path(suc->recursive_prefix,
1379 ce->name, &displaypath_sb);
1380 else
1381 displaypath = ce->name;
1382
1383 if (!sub) {
1384 next_submodule_warn_missing(suc, out, displaypath);
1385 goto cleanup;
1386 }
1387
1388 key = xstrfmt("submodule.%s.update", sub->name);
1389 if (!repo_config_get_string_const(the_repository, key, &update_string)) {
1390 update_type = parse_submodule_update_type(update_string);
1391 } else {
1392 update_type = sub->update_strategy.type;
1393 }
1394 free(key);
1395
1396 if (suc->update.type == SM_UPDATE_NONE
1397 || (suc->update.type == SM_UPDATE_UNSPECIFIED
1398 && update_type == SM_UPDATE_NONE)) {
1399 strbuf_addf(out, _("Skipping submodule '%s'"), displaypath);
1400 strbuf_addch(out, '\n');
1401 goto cleanup;
1402 }
1403
1404 /* Check if the submodule has been initialized. */
1405 if (!is_submodule_active(the_repository, ce->name)) {
1406 next_submodule_warn_missing(suc, out, displaypath);
1407 goto cleanup;
1408 }
1409
1410 strbuf_reset(&sb);
1411 strbuf_addf(&sb, "submodule.%s.url", sub->name);
1412 if (repo_config_get_string_const(the_repository, sb.buf, &url))
1413 url = sub->url;
1414
1415 strbuf_reset(&sb);
1416 strbuf_addf(&sb, "%s/.git", ce->name);
1417 needs_cloning = !file_exists(sb.buf);
1418
1419 strbuf_reset(&sb);
1420 strbuf_addf(&sb, "%06o %s %d %d\t%s\n", ce->ce_mode,
1421 oid_to_hex(&ce->oid), ce_stage(ce),
1422 needs_cloning, ce->name);
1423 string_list_append(&suc->projectlines, sb.buf);
1424
1425 if (!needs_cloning)
1426 goto cleanup;
1427
1428 child->git_cmd = 1;
1429 child->no_stdin = 1;
1430 child->stdout_to_stderr = 1;
1431 child->err = -1;
1432 argv_array_push(&child->args, "submodule--helper");
1433 argv_array_push(&child->args, "clone");
1434 if (suc->progress)
1435 argv_array_push(&child->args, "--progress");
1436 if (suc->quiet)
1437 argv_array_push(&child->args, "--quiet");
1438 if (suc->prefix)
1439 argv_array_pushl(&child->args, "--prefix", suc->prefix, NULL);
1440 if (suc->recommend_shallow && sub->recommend_shallow == 1)
1441 argv_array_push(&child->args, "--depth=1");
1442 argv_array_pushl(&child->args, "--path", sub->path, NULL);
1443 argv_array_pushl(&child->args, "--name", sub->name, NULL);
1444 argv_array_pushl(&child->args, "--url", url, NULL);
1445 if (suc->references.nr) {
1446 struct string_list_item *item;
1447 for_each_string_list_item(item, &suc->references)
1448 argv_array_pushl(&child->args, "--reference", item->string, NULL);
1449 }
1450 if (suc->depth)
1451 argv_array_push(&child->args, suc->depth);
1452
1453 cleanup:
1454 strbuf_reset(&displaypath_sb);
1455 strbuf_reset(&sb);
1456
1457 return needs_cloning;
1458 }
1459
1460 static int update_clone_get_next_task(struct child_process *child,
1461 struct strbuf *err,
1462 void *suc_cb,
1463 void **idx_task_cb)
1464 {
1465 struct submodule_update_clone *suc = suc_cb;
1466 const struct cache_entry *ce;
1467 int index;
1468
1469 for (; suc->current < suc->list.nr; suc->current++) {
1470 ce = suc->list.entries[suc->current];
1471 if (prepare_to_clone_next_submodule(ce, child, suc, err)) {
1472 int *p = xmalloc(sizeof(*p));
1473 *p = suc->current;
1474 *idx_task_cb = p;
1475 suc->current++;
1476 return 1;
1477 }
1478 }
1479
1480 /*
1481 * The loop above tried cloning each submodule once, now try the
1482 * stragglers again, which we can imagine as an extension of the
1483 * entry list.
1484 */
1485 index = suc->current - suc->list.nr;
1486 if (index < suc->failed_clones_nr) {
1487 int *p;
1488 ce = suc->failed_clones[index];
1489 if (!prepare_to_clone_next_submodule(ce, child, suc, err)) {
1490 suc->current ++;
1491 strbuf_addstr(err, "BUG: submodule considered for "
1492 "cloning, doesn't need cloning "
1493 "any more?\n");
1494 return 0;
1495 }
1496 p = xmalloc(sizeof(*p));
1497 *p = suc->current;
1498 *idx_task_cb = p;
1499 suc->current ++;
1500 return 1;
1501 }
1502
1503 return 0;
1504 }
1505
1506 static int update_clone_start_failure(struct strbuf *err,
1507 void *suc_cb,
1508 void *idx_task_cb)
1509 {
1510 struct submodule_update_clone *suc = suc_cb;
1511 suc->quickstop = 1;
1512 return 1;
1513 }
1514
1515 static int update_clone_task_finished(int result,
1516 struct strbuf *err,
1517 void *suc_cb,
1518 void *idx_task_cb)
1519 {
1520 const struct cache_entry *ce;
1521 struct submodule_update_clone *suc = suc_cb;
1522
1523 int *idxP = idx_task_cb;
1524 int idx = *idxP;
1525 free(idxP);
1526
1527 if (!result)
1528 return 0;
1529
1530 if (idx < suc->list.nr) {
1531 ce = suc->list.entries[idx];
1532 strbuf_addf(err, _("Failed to clone '%s'. Retry scheduled"),
1533 ce->name);
1534 strbuf_addch(err, '\n');
1535 ALLOC_GROW(suc->failed_clones,
1536 suc->failed_clones_nr + 1,
1537 suc->failed_clones_alloc);
1538 suc->failed_clones[suc->failed_clones_nr++] = ce;
1539 return 0;
1540 } else {
1541 idx -= suc->list.nr;
1542 ce = suc->failed_clones[idx];
1543 strbuf_addf(err, _("Failed to clone '%s' a second time, aborting"),
1544 ce->name);
1545 strbuf_addch(err, '\n');
1546 suc->quickstop = 1;
1547 return 1;
1548 }
1549
1550 return 0;
1551 }
1552
1553 static int gitmodules_update_clone_config(const char *var, const char *value,
1554 void *cb)
1555 {
1556 int *max_jobs = cb;
1557 if (!strcmp(var, "submodule.fetchjobs"))
1558 *max_jobs = parse_submodule_fetchjobs(var, value);
1559 return 0;
1560 }
1561
1562 static int update_clone(int argc, const char **argv, const char *prefix)
1563 {
1564 const char *update = NULL;
1565 int max_jobs = 1;
1566 struct string_list_item *item;
1567 struct pathspec pathspec;
1568 struct submodule_update_clone suc = SUBMODULE_UPDATE_CLONE_INIT;
1569
1570 struct option module_update_clone_options[] = {
1571 OPT_STRING(0, "prefix", &prefix,
1572 N_("path"),
1573 N_("path into the working tree")),
1574 OPT_STRING(0, "recursive-prefix", &suc.recursive_prefix,
1575 N_("path"),
1576 N_("path into the working tree, across nested "
1577 "submodule boundaries")),
1578 OPT_STRING(0, "update", &update,
1579 N_("string"),
1580 N_("rebase, merge, checkout or none")),
1581 OPT_STRING_LIST(0, "reference", &suc.references, N_("repo"),
1582 N_("reference repository")),
1583 OPT_STRING(0, "depth", &suc.depth, "<depth>",
1584 N_("Create a shallow clone truncated to the "
1585 "specified number of revisions")),
1586 OPT_INTEGER('j', "jobs", &max_jobs,
1587 N_("parallel jobs")),
1588 OPT_BOOL(0, "recommend-shallow", &suc.recommend_shallow,
1589 N_("whether the initial clone should follow the shallow recommendation")),
1590 OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
1591 OPT_BOOL(0, "progress", &suc.progress,
1592 N_("force cloning progress")),
1593 OPT_END()
1594 };
1595
1596 const char *const git_submodule_helper_usage[] = {
1597 N_("git submodule--helper update_clone [--prefix=<path>] [<path>...]"),
1598 NULL
1599 };
1600 suc.prefix = prefix;
1601
1602 config_from_gitmodules(gitmodules_update_clone_config, &max_jobs);
1603 git_config(gitmodules_update_clone_config, &max_jobs);
1604
1605 argc = parse_options(argc, argv, prefix, module_update_clone_options,
1606 git_submodule_helper_usage, 0);
1607
1608 if (update)
1609 if (parse_submodule_update_strategy(update, &suc.update) < 0)
1610 die(_("bad value for update parameter"));
1611
1612 if (module_list_compute(argc, argv, prefix, &pathspec, &suc.list) < 0)
1613 return 1;
1614
1615 if (pathspec.nr)
1616 suc.warn_if_uninitialized = 1;
1617
1618 run_processes_parallel(max_jobs,
1619 update_clone_get_next_task,
1620 update_clone_start_failure,
1621 update_clone_task_finished,
1622 &suc);
1623
1624 /*
1625 * We saved the output and put it out all at once now.
1626 * That means:
1627 * - the listener does not have to interleave their (checkout)
1628 * work with our fetching. The writes involved in a
1629 * checkout involve more straightforward sequential I/O.
1630 * - the listener can avoid doing any work if fetching failed.
1631 */
1632 if (suc.quickstop)
1633 return 1;
1634
1635 for_each_string_list_item(item, &suc.projectlines)
1636 fprintf(stdout, "%s", item->string);
1637
1638 return 0;
1639 }
1640
1641 static int resolve_relative_path(int argc, const char **argv, const char *prefix)
1642 {
1643 struct strbuf sb = STRBUF_INIT;
1644 if (argc != 3)
1645 die("submodule--helper relative-path takes exactly 2 arguments, got %d", argc);
1646
1647 printf("%s", relative_path(argv[1], argv[2], &sb));
1648 strbuf_release(&sb);
1649 return 0;
1650 }
1651
1652 static const char *remote_submodule_branch(const char *path)
1653 {
1654 const struct submodule *sub;
1655 const char *branch = NULL;
1656 char *key;
1657
1658 sub = submodule_from_path(&null_oid, path);
1659 if (!sub)
1660 return NULL;
1661
1662 key = xstrfmt("submodule.%s.branch", sub->name);
1663 if (repo_config_get_string_const(the_repository, key, &branch))
1664 branch = sub->branch;
1665 free(key);
1666
1667 if (!branch)
1668 return "master";
1669
1670 if (!strcmp(branch, ".")) {
1671 const char *refname = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
1672
1673 if (!refname)
1674 die(_("No such ref: %s"), "HEAD");
1675
1676 /* detached HEAD */
1677 if (!strcmp(refname, "HEAD"))
1678 die(_("Submodule (%s) branch configured to inherit "
1679 "branch from superproject, but the superproject "
1680 "is not on any branch"), sub->name);
1681
1682 if (!skip_prefix(refname, "refs/heads/", &refname))
1683 die(_("Expecting a full ref name, got %s"), refname);
1684 return refname;
1685 }
1686
1687 return branch;
1688 }
1689
1690 static int resolve_remote_submodule_branch(int argc, const char **argv,
1691 const char *prefix)
1692 {
1693 const char *ret;
1694 struct strbuf sb = STRBUF_INIT;
1695 if (argc != 2)
1696 die("submodule--helper remote-branch takes exactly one arguments, got %d", argc);
1697
1698 ret = remote_submodule_branch(argv[1]);
1699 if (!ret)
1700 die("submodule %s doesn't exist", argv[1]);
1701
1702 printf("%s", ret);
1703 strbuf_release(&sb);
1704 return 0;
1705 }
1706
1707 static int push_check(int argc, const char **argv, const char *prefix)
1708 {
1709 struct remote *remote;
1710 const char *superproject_head;
1711 char *head;
1712 int detached_head = 0;
1713 struct object_id head_oid;
1714
1715 if (argc < 3)
1716 die("submodule--helper push-check requires at least 2 arguments");
1717
1718 /*
1719 * superproject's resolved head ref.
1720 * if HEAD then the superproject is in a detached head state, otherwise
1721 * it will be the resolved head ref.
1722 */
1723 superproject_head = argv[1];
1724 argv++;
1725 argc--;
1726 /* Get the submodule's head ref and determine if it is detached */
1727 head = resolve_refdup("HEAD", 0, &head_oid, NULL);
1728 if (!head)
1729 die(_("Failed to resolve HEAD as a valid ref."));
1730 if (!strcmp(head, "HEAD"))
1731 detached_head = 1;
1732
1733 /*
1734 * The remote must be configured.
1735 * This is to avoid pushing to the exact same URL as the parent.
1736 */
1737 remote = pushremote_get(argv[1]);
1738 if (!remote || remote->origin == REMOTE_UNCONFIGURED)
1739 die("remote '%s' not configured", argv[1]);
1740
1741 /* Check the refspec */
1742 if (argc > 2) {
1743 int i, refspec_nr = argc - 2;
1744 struct ref *local_refs = get_local_heads();
1745 struct refspec *refspec = parse_push_refspec(refspec_nr,
1746 argv + 2);
1747
1748 for (i = 0; i < refspec_nr; i++) {
1749 struct refspec *rs = refspec + i;
1750
1751 if (rs->pattern || rs->matching)
1752 continue;
1753
1754 /* LHS must match a single ref */
1755 switch (count_refspec_match(rs->src, local_refs, NULL)) {
1756 case 1:
1757 break;
1758 case 0:
1759 /*
1760 * If LHS matches 'HEAD' then we need to ensure
1761 * that it matches the same named branch
1762 * checked out in the superproject.
1763 */
1764 if (!strcmp(rs->src, "HEAD")) {
1765 if (!detached_head &&
1766 !strcmp(head, superproject_head))
1767 break;
1768 die("HEAD does not match the named branch in the superproject");
1769 }
1770 /* fallthrough */
1771 default:
1772 die("src refspec '%s' must name a ref",
1773 rs->src);
1774 }
1775 }
1776 free_refspec(refspec_nr, refspec);
1777 }
1778 free(head);
1779
1780 return 0;
1781 }
1782
1783 static int absorb_git_dirs(int argc, const char **argv, const char *prefix)
1784 {
1785 int i;
1786 struct pathspec pathspec;
1787 struct module_list list = MODULE_LIST_INIT;
1788 unsigned flags = ABSORB_GITDIR_RECURSE_SUBMODULES;
1789
1790 struct option embed_gitdir_options[] = {
1791 OPT_STRING(0, "prefix", &prefix,
1792 N_("path"),
1793 N_("path into the working tree")),
1794 OPT_BIT(0, "--recursive", &flags, N_("recurse into submodules"),
1795 ABSORB_GITDIR_RECURSE_SUBMODULES),
1796 OPT_END()
1797 };
1798
1799 const char *const git_submodule_helper_usage[] = {
1800 N_("git submodule--helper embed-git-dir [<path>...]"),
1801 NULL
1802 };
1803
1804 argc = parse_options(argc, argv, prefix, embed_gitdir_options,
1805 git_submodule_helper_usage, 0);
1806
1807 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
1808 return 1;
1809
1810 for (i = 0; i < list.nr; i++)
1811 absorb_git_dir_into_superproject(prefix,
1812 list.entries[i]->name, flags);
1813
1814 return 0;
1815 }
1816
1817 static int is_active(int argc, const char **argv, const char *prefix)
1818 {
1819 if (argc != 2)
1820 die("submodule--helper is-active takes exactly 1 argument");
1821
1822 return !is_submodule_active(the_repository, argv[1]);
1823 }
1824
1825 #define SUPPORT_SUPER_PREFIX (1<<0)
1826
1827 struct cmd_struct {
1828 const char *cmd;
1829 int (*fn)(int, const char **, const char *);
1830 unsigned option;
1831 };
1832
1833 static struct cmd_struct commands[] = {
1834 {"list", module_list, 0},
1835 {"name", module_name, 0},
1836 {"clone", module_clone, 0},
1837 {"update-clone", update_clone, 0},
1838 {"relative-path", resolve_relative_path, 0},
1839 {"resolve-relative-url", resolve_relative_url, 0},
1840 {"resolve-relative-url-test", resolve_relative_url_test, 0},
1841 {"init", module_init, SUPPORT_SUPER_PREFIX},
1842 {"status", module_status, SUPPORT_SUPER_PREFIX},
1843 {"print-default-remote", print_default_remote, 0},
1844 {"sync", module_sync, SUPPORT_SUPER_PREFIX},
1845 {"deinit", module_deinit, 0},
1846 {"remote-branch", resolve_remote_submodule_branch, 0},
1847 {"push-check", push_check, 0},
1848 {"absorb-git-dirs", absorb_git_dirs, SUPPORT_SUPER_PREFIX},
1849 {"is-active", is_active, 0},
1850 };
1851
1852 int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
1853 {
1854 int i;
1855 if (argc < 2 || !strcmp(argv[1], "-h"))
1856 usage("git submodule--helper <command>");
1857
1858 for (i = 0; i < ARRAY_SIZE(commands); i++) {
1859 if (!strcmp(argv[1], commands[i].cmd)) {
1860 if (get_super_prefix() &&
1861 !(commands[i].option & SUPPORT_SUPER_PREFIX))
1862 die(_("%s doesn't support --super-prefix"),
1863 commands[i].cmd);
1864 return commands[i].fn(argc - 1, argv + 1, prefix);
1865 }
1866 }
1867
1868 die(_("'%s' is not a valid submodule--helper "
1869 "subcommand"), argv[1]);
1870 }
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