3 #include "parse-options.h"
9 #include "submodule-config.h"
10 #include "string-list.h"
11 #include "run-command.h"
16 static char *get_default_remote(void)
18 char *dest = NULL, *ret;
19 unsigned char sha1[20];
20 struct strbuf sb = STRBUF_INIT;
21 const char *refname = resolve_ref_unsafe("HEAD", 0, sha1, NULL);
24 die(_("No such ref: %s"), "HEAD");
27 if (!strcmp(refname, "HEAD"))
28 return xstrdup("origin");
30 if (!skip_prefix(refname, "refs/heads/", &refname))
31 die(_("Expecting a full ref name, got %s"), refname);
33 strbuf_addf(&sb, "branch.%s.remote", refname);
34 if (git_config_get_string(sb.buf, &dest))
35 ret = xstrdup("origin");
43 static int starts_with_dot_slash(const char *str)
45 return str[0] == '.' && is_dir_sep(str[1]);
48 static int starts_with_dot_dot_slash(const char *str)
50 return str[0] == '.' && str[1] == '.' && is_dir_sep(str[2]);
54 * Returns 1 if it was the last chop before ':'.
56 static int chop_last_dir(char **remoteurl, int is_relative)
58 char *rfind = find_last_dir_sep(*remoteurl);
64 rfind = strrchr(*remoteurl, ':');
70 if (is_relative || !strcmp(".", *remoteurl))
71 die(_("cannot strip one component off url '%s'"),
75 *remoteurl = xstrdup(".");
80 * The `url` argument is the URL that navigates to the submodule origin
81 * repo. When relative, this URL is relative to the superproject origin
82 * URL repo. The `up_path` argument, if specified, is the relative
83 * path that navigates from the submodule working tree to the superproject
84 * working tree. Returns the origin URL of the submodule.
86 * Return either an absolute URL or filesystem path (if the superproject
87 * origin URL is an absolute URL or filesystem path, respectively) or a
88 * relative file system path (if the superproject origin URL is a relative
91 * When the output is a relative file system path, the path is either
92 * relative to the submodule working tree, if up_path is specified, or to
93 * the superproject working tree otherwise.
95 * NEEDSWORK: This works incorrectly on the domain and protocol part.
96 * remote_url url outcome expectation
97 * http://a.com/b ../c http://a.com/c as is
98 * http://a.com/b ../../c http://c error out
99 * http://a.com/b ../../../c http:/c error out
100 * http://a.com/b ../../../../c http:c error out
101 * http://a.com/b ../../../../../c .:c error out
102 * NEEDSWORK: Given how chop_last_dir() works, this function is broken
103 * when a local part has a colon in its path component, too.
105 static char *relative_url(const char *remote_url,
112 char *remoteurl = xstrdup(remote_url);
113 struct strbuf sb = STRBUF_INIT;
114 size_t len = strlen(remoteurl);
116 if (is_dir_sep(remoteurl[len]))
117 remoteurl[len] = '\0';
119 if (!url_is_local_not_ssh(remoteurl) || is_absolute_path(remoteurl))
124 * Prepend a './' to ensure all relative
125 * remoteurls start with './' or '../'
127 if (!starts_with_dot_slash(remoteurl) &&
128 !starts_with_dot_dot_slash(remoteurl)) {
130 strbuf_addf(&sb, "./%s", remoteurl);
132 remoteurl = strbuf_detach(&sb, NULL);
136 * When the url starts with '../', remove that and the
137 * last directory in remoteurl.
140 if (starts_with_dot_dot_slash(url)) {
142 colonsep |= chop_last_dir(&remoteurl, is_relative);
143 } else if (starts_with_dot_slash(url))
149 strbuf_addf(&sb, "%s%s%s", remoteurl, colonsep ? ":" : "/", url);
152 if (starts_with_dot_slash(sb.buf))
153 out = xstrdup(sb.buf + 2);
155 out = xstrdup(sb.buf);
158 if (!up_path || !is_relative)
161 strbuf_addf(&sb, "%s%s", up_path, out);
163 return strbuf_detach(&sb, NULL);
166 static int resolve_relative_url(int argc, const char **argv, const char *prefix)
168 char *remoteurl = NULL;
169 char *remote = get_default_remote();
170 const char *up_path = NULL;
173 struct strbuf sb = STRBUF_INIT;
175 if (argc != 2 && argc != 3)
176 die("resolve-relative-url only accepts one or two arguments");
179 strbuf_addf(&sb, "remote.%s.url", remote);
182 if (git_config_get_string(sb.buf, &remoteurl))
183 /* the repository is its own authoritative upstream */
184 remoteurl = xgetcwd();
189 res = relative_url(remoteurl, url, up_path);
196 static int resolve_relative_url_test(int argc, const char **argv, const char *prefix)
198 char *remoteurl, *res;
199 const char *up_path, *url;
202 die("resolve-relative-url-test only accepts three arguments: <up_path> <remoteurl> <url>");
205 remoteurl = xstrdup(argv[2]);
208 if (!strcmp(up_path, "(null)"))
211 res = relative_url(remoteurl, url, up_path);
219 const struct cache_entry **entries;
222 #define MODULE_LIST_INIT { NULL, 0, 0 }
224 static int module_list_compute(int argc, const char **argv,
226 struct pathspec *pathspec,
227 struct module_list *list)
230 char *ps_matched = NULL;
231 parse_pathspec(pathspec, 0,
232 PATHSPEC_PREFER_FULL |
233 PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
237 ps_matched = xcalloc(pathspec->nr, 1);
239 if (read_cache() < 0)
240 die(_("index file corrupt"));
242 for (i = 0; i < active_nr; i++) {
243 const struct cache_entry *ce = active_cache[i];
245 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce),
247 !S_ISGITLINK(ce->ce_mode))
250 ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
251 list->entries[list->nr++] = ce;
252 while (i + 1 < active_nr &&
253 !strcmp(ce->name, active_cache[i + 1]->name))
255 * Skip entries with the same name in different stages
256 * to make sure an entry is returned only once.
261 if (ps_matched && report_path_error(ps_matched, pathspec, prefix))
269 static int module_list(int argc, const char **argv, const char *prefix)
272 struct pathspec pathspec;
273 struct module_list list = MODULE_LIST_INIT;
275 struct option module_list_options[] = {
276 OPT_STRING(0, "prefix", &prefix,
278 N_("alternative anchor for relative paths")),
282 const char *const git_submodule_helper_usage[] = {
283 N_("git submodule--helper list [--prefix=<path>] [<path>...]"),
287 argc = parse_options(argc, argv, prefix, module_list_options,
288 git_submodule_helper_usage, 0);
290 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
293 for (i = 0; i < list.nr; i++) {
294 const struct cache_entry *ce = list.entries[i];
297 printf("%06o %s U\t", ce->ce_mode, sha1_to_hex(null_sha1));
299 printf("%06o %s %d\t", ce->ce_mode, sha1_to_hex(ce->sha1), ce_stage(ce));
301 utf8_fprintf(stdout, "%s\n", ce->name);
306 static void init_submodule(const char *path, const char *prefix, int quiet)
308 const struct submodule *sub;
309 struct strbuf sb = STRBUF_INIT;
310 char *upd = NULL, *url = NULL, *displaypath;
312 /* Only loads from .gitmodules, no overlay with .git/config */
316 strbuf_addf(&sb, "%s%s", prefix, path);
317 displaypath = strbuf_detach(&sb, NULL);
319 displaypath = xstrdup(path);
321 sub = submodule_from_path(null_sha1, path);
324 die(_("No url found for submodule path '%s' in .gitmodules"),
328 * Copy url setting when it is not set yet.
329 * To look up the url in .git/config, we must not fall back to
330 * .gitmodules, so look it up directly.
333 strbuf_addf(&sb, "submodule.%s.url", sub->name);
334 if (git_config_get_string(sb.buf, &url)) {
335 url = xstrdup(sub->url);
338 die(_("No url found for submodule path '%s' in .gitmodules"),
341 /* Possibly a url relative to parent */
342 if (starts_with_dot_dot_slash(url) ||
343 starts_with_dot_slash(url)) {
344 char *remoteurl, *relurl;
345 char *remote = get_default_remote();
346 struct strbuf remotesb = STRBUF_INIT;
347 strbuf_addf(&remotesb, "remote.%s.url", remote);
350 if (git_config_get_string(remotesb.buf, &remoteurl))
352 * The repository is its own
353 * authoritative upstream
355 remoteurl = xgetcwd();
356 relurl = relative_url(remoteurl, url, NULL);
357 strbuf_release(&remotesb);
363 if (git_config_set_gently(sb.buf, url))
364 die(_("Failed to register url for submodule path '%s'"),
368 _("Submodule '%s' (%s) registered for path '%s'\n"),
369 sub->name, url, displaypath);
372 /* Copy "update" setting when it is not set yet */
374 strbuf_addf(&sb, "submodule.%s.update", sub->name);
375 if (git_config_get_string(sb.buf, &upd) &&
376 sub->update_strategy.type != SM_UPDATE_UNSPECIFIED) {
377 if (sub->update_strategy.type == SM_UPDATE_COMMAND) {
378 fprintf(stderr, _("warning: command update mode suggested for submodule '%s'\n"),
380 upd = xstrdup("none");
382 upd = xstrdup(submodule_strategy_to_string(&sub->update_strategy));
384 if (git_config_set_gently(sb.buf, upd))
385 die(_("Failed to register update mode for submodule path '%s'"), displaypath);
393 static int module_init(int argc, const char **argv, const char *prefix)
395 struct pathspec pathspec;
396 struct module_list list = MODULE_LIST_INIT;
400 struct option module_init_options[] = {
401 OPT_STRING(0, "prefix", &prefix,
403 N_("alternative anchor for relative paths")),
404 OPT__QUIET(&quiet, N_("Suppress output for initializing a submodule")),
408 const char *const git_submodule_helper_usage[] = {
409 N_("git submodule--helper init [<path>]"),
413 argc = parse_options(argc, argv, prefix, module_init_options,
414 git_submodule_helper_usage, 0);
416 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
419 for (i = 0; i < list.nr; i++)
420 init_submodule(list.entries[i]->name, prefix, quiet);
425 static int module_name(int argc, const char **argv, const char *prefix)
427 const struct submodule *sub;
430 usage(_("git submodule--helper name <path>"));
433 sub = submodule_from_path(null_sha1, argv[1]);
436 die(_("no submodule mapping found in .gitmodules for path '%s'"),
439 printf("%s\n", sub->name);
444 static int clone_submodule(const char *path, const char *gitdir, const char *url,
445 const char *depth, struct string_list *reference, int quiet)
447 struct child_process cp;
448 child_process_init(&cp);
450 argv_array_push(&cp.args, "clone");
451 argv_array_push(&cp.args, "--no-checkout");
453 argv_array_push(&cp.args, "--quiet");
455 argv_array_pushl(&cp.args, "--depth", depth, NULL);
457 struct string_list_item *item;
458 for_each_string_list_item(item, reference)
459 argv_array_pushl(&cp.args, "--reference",
462 if (gitdir && *gitdir)
463 argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
465 argv_array_push(&cp.args, url);
466 argv_array_push(&cp.args, path);
469 prepare_submodule_repo_env(&cp.env_array);
472 return run_command(&cp);
475 static int module_clone(int argc, const char **argv, const char *prefix)
477 const char *name = NULL, *url = NULL, *depth = NULL;
479 FILE *submodule_dot_git;
480 char *p, *path = NULL, *sm_gitdir;
481 struct strbuf rel_path = STRBUF_INIT;
482 struct strbuf sb = STRBUF_INIT;
483 struct string_list reference = STRING_LIST_INIT_NODUP;
485 struct option module_clone_options[] = {
486 OPT_STRING(0, "prefix", &prefix,
488 N_("alternative anchor for relative paths")),
489 OPT_STRING(0, "path", &path,
491 N_("where the new submodule will be cloned to")),
492 OPT_STRING(0, "name", &name,
494 N_("name of the new submodule")),
495 OPT_STRING(0, "url", &url,
497 N_("url where to clone the submodule from")),
498 OPT_STRING_LIST(0, "reference", &reference,
500 N_("reference repository")),
501 OPT_STRING(0, "depth", &depth,
503 N_("depth for shallow clones")),
504 OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
508 const char *const git_submodule_helper_usage[] = {
509 N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
510 "[--reference <repository>] [--name <name>] [--depth <depth>] "
511 "--url <url> --path <path>"),
515 argc = parse_options(argc, argv, prefix, module_clone_options,
516 git_submodule_helper_usage, 0);
518 if (argc || !url || !path || !*path)
519 usage_with_options(git_submodule_helper_usage,
520 module_clone_options);
522 strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
523 sm_gitdir = xstrdup(absolute_path(sb.buf));
526 if (!is_absolute_path(path)) {
527 strbuf_addf(&sb, "%s/%s", get_git_work_tree(), path);
528 path = strbuf_detach(&sb, NULL);
530 path = xstrdup(path);
532 if (!file_exists(sm_gitdir)) {
533 if (safe_create_leading_directories_const(sm_gitdir) < 0)
534 die(_("could not create directory '%s'"), sm_gitdir);
535 if (clone_submodule(path, sm_gitdir, url, depth, &reference, quiet))
536 die(_("clone of '%s' into submodule path '%s' failed"),
539 if (safe_create_leading_directories_const(path) < 0)
540 die(_("could not create directory '%s'"), path);
541 strbuf_addf(&sb, "%s/index", sm_gitdir);
542 unlink_or_warn(sb.buf);
546 /* Write a .git file in the submodule to redirect to the superproject. */
547 strbuf_addf(&sb, "%s/.git", path);
548 if (safe_create_leading_directories_const(sb.buf) < 0)
549 die(_("could not create leading directories of '%s'"), sb.buf);
550 submodule_dot_git = fopen(sb.buf, "w");
551 if (!submodule_dot_git)
552 die_errno(_("cannot open file '%s'"), sb.buf);
554 fprintf_or_die(submodule_dot_git, "gitdir: %s\n",
555 relative_path(sm_gitdir, path, &rel_path));
556 if (fclose(submodule_dot_git))
557 die(_("could not close file %s"), sb.buf);
559 strbuf_reset(&rel_path);
561 /* Redirect the worktree of the submodule in the superproject's config */
562 p = git_pathdup_submodule(path, "config");
564 die(_("could not get submodule directory for '%s'"), path);
565 git_config_set_in_file(p, "core.worktree",
566 relative_path(path, sm_gitdir, &rel_path));
568 strbuf_release(&rel_path);
575 struct submodule_update_clone {
576 /* index into 'list', the list of submodules to look into for cloning */
578 struct module_list list;
579 unsigned warn_if_uninitialized : 1;
581 /* update parameter passed via commandline */
582 struct submodule_update_strategy update;
584 /* configuration parameters which are passed on to the children */
586 int recommend_shallow;
587 struct string_list references;
589 const char *recursive_prefix;
592 /* Machine-readable status lines to be consumed by git-submodule.sh */
593 struct string_list projectlines;
595 /* If we want to stop as fast as possible and return an error */
596 unsigned quickstop : 1;
598 /* failed clones to be retried again */
599 const struct cache_entry **failed_clones;
600 int failed_clones_nr, failed_clones_alloc;
602 #define SUBMODULE_UPDATE_CLONE_INIT {0, MODULE_LIST_INIT, 0, \
603 SUBMODULE_UPDATE_STRATEGY_INIT, 0, -1, STRING_LIST_INIT_DUP, \
605 STRING_LIST_INIT_DUP, 0, NULL, 0, 0}
608 static void next_submodule_warn_missing(struct submodule_update_clone *suc,
609 struct strbuf *out, const char *displaypath)
612 * Only mention uninitialized submodules when their
613 * paths have been specified.
615 if (suc->warn_if_uninitialized) {
617 _("Submodule path '%s' not initialized"),
619 strbuf_addch(out, '\n');
621 _("Maybe you want to use 'update --init'?"));
622 strbuf_addch(out, '\n');
627 * Determine whether 'ce' needs to be cloned. If so, prepare the 'child' to
628 * run the clone. Returns 1 if 'ce' needs to be cloned, 0 otherwise.
630 static int prepare_to_clone_next_submodule(const struct cache_entry *ce,
631 struct child_process *child,
632 struct submodule_update_clone *suc,
635 const struct submodule *sub = NULL;
636 struct strbuf displaypath_sb = STRBUF_INIT;
637 struct strbuf sb = STRBUF_INIT;
638 const char *displaypath = NULL;
640 int needs_cloning = 0;
643 if (suc->recursive_prefix)
644 strbuf_addf(&sb, "%s/%s", suc->recursive_prefix, ce->name);
646 strbuf_addf(&sb, "%s", ce->name);
647 strbuf_addf(out, _("Skipping unmerged submodule %s"), sb.buf);
648 strbuf_addch(out, '\n');
652 sub = submodule_from_path(null_sha1, ce->name);
654 if (suc->recursive_prefix)
655 displaypath = relative_path(suc->recursive_prefix,
656 ce->name, &displaypath_sb);
658 displaypath = ce->name;
661 next_submodule_warn_missing(suc, out, displaypath);
665 if (suc->update.type == SM_UPDATE_NONE
666 || (suc->update.type == SM_UPDATE_UNSPECIFIED
667 && sub->update_strategy.type == SM_UPDATE_NONE)) {
668 strbuf_addf(out, _("Skipping submodule '%s'"), displaypath);
669 strbuf_addch(out, '\n');
674 * Looking up the url in .git/config.
675 * We must not fall back to .gitmodules as we only want
676 * to process configured submodules.
679 strbuf_addf(&sb, "submodule.%s.url", sub->name);
680 git_config_get_string(sb.buf, &url);
682 next_submodule_warn_missing(suc, out, displaypath);
687 strbuf_addf(&sb, "%s/.git", ce->name);
688 needs_cloning = !file_exists(sb.buf);
691 strbuf_addf(&sb, "%06o %s %d %d\t%s\n", ce->ce_mode,
692 sha1_to_hex(ce->sha1), ce_stage(ce),
693 needs_cloning, ce->name);
694 string_list_append(&suc->projectlines, sb.buf);
701 child->stdout_to_stderr = 1;
703 argv_array_push(&child->args, "submodule--helper");
704 argv_array_push(&child->args, "clone");
706 argv_array_push(&child->args, "--quiet");
708 argv_array_pushl(&child->args, "--prefix", suc->prefix, NULL);
709 if (suc->recommend_shallow && sub->recommend_shallow == 1)
710 argv_array_push(&child->args, "--depth=1");
711 argv_array_pushl(&child->args, "--path", sub->path, NULL);
712 argv_array_pushl(&child->args, "--name", sub->name, NULL);
713 argv_array_pushl(&child->args, "--url", url, NULL);
714 if (suc->references.nr) {
715 struct string_list_item *item;
716 for_each_string_list_item(item, &suc->references)
717 argv_array_pushl(&child->args, "--reference", item->string, NULL);
720 argv_array_push(&child->args, suc->depth);
724 strbuf_reset(&displaypath_sb);
727 return needs_cloning;
730 static int update_clone_get_next_task(struct child_process *child,
735 struct submodule_update_clone *suc = suc_cb;
736 const struct cache_entry *ce;
739 for (; suc->current < suc->list.nr; suc->current++) {
740 ce = suc->list.entries[suc->current];
741 if (prepare_to_clone_next_submodule(ce, child, suc, err)) {
742 int *p = xmalloc(sizeof(*p));
751 * The loop above tried cloning each submodule once, now try the
752 * stragglers again, which we can imagine as an extension of the
755 index = suc->current - suc->list.nr;
756 if (index < suc->failed_clones_nr) {
758 ce = suc->failed_clones[index];
759 if (!prepare_to_clone_next_submodule(ce, child, suc, err))
760 die("BUG: ce was a submodule before?");
761 p = xmalloc(sizeof(*p));
771 static int update_clone_start_failure(struct strbuf *err,
775 struct submodule_update_clone *suc = suc_cb;
780 static int update_clone_task_finished(int result,
785 const struct cache_entry *ce;
786 struct submodule_update_clone *suc = suc_cb;
788 int *idxP = *(int**)idx_task_cb;
795 if (idx < suc->list.nr) {
796 ce = suc->list.entries[idx];
797 strbuf_addf(err, _("Failed to clone '%s'. Retry scheduled"),
799 strbuf_addch(err, '\n');
800 ALLOC_GROW(suc->failed_clones,
801 suc->failed_clones_nr + 1,
802 suc->failed_clones_alloc);
803 suc->failed_clones[suc->failed_clones_nr++] = ce;
807 ce = suc->failed_clones[idx];
808 strbuf_addf(err, _("Failed to clone '%s' a second time, aborting"),
810 strbuf_addch(err, '\n');
818 static int update_clone(int argc, const char **argv, const char *prefix)
820 const char *update = NULL;
822 struct string_list_item *item;
823 struct pathspec pathspec;
824 struct submodule_update_clone suc = SUBMODULE_UPDATE_CLONE_INIT;
826 struct option module_update_clone_options[] = {
827 OPT_STRING(0, "prefix", &prefix,
829 N_("path into the working tree")),
830 OPT_STRING(0, "recursive-prefix", &suc.recursive_prefix,
832 N_("path into the working tree, across nested "
833 "submodule boundaries")),
834 OPT_STRING(0, "update", &update,
836 N_("rebase, merge, checkout or none")),
837 OPT_STRING_LIST(0, "reference", &suc.references, N_("repo"),
838 N_("reference repository")),
839 OPT_STRING(0, "depth", &suc.depth, "<depth>",
840 N_("Create a shallow clone truncated to the "
841 "specified number of revisions")),
842 OPT_INTEGER('j', "jobs", &max_jobs,
843 N_("parallel jobs")),
844 OPT_BOOL(0, "recommend-shallow", &suc.recommend_shallow,
845 N_("whether the initial clone should follow the shallow recommendation")),
846 OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
850 const char *const git_submodule_helper_usage[] = {
851 N_("git submodule--helper update_clone [--prefix=<path>] [<path>...]"),
856 argc = parse_options(argc, argv, prefix, module_update_clone_options,
857 git_submodule_helper_usage, 0);
860 if (parse_submodule_update_strategy(update, &suc.update) < 0)
861 die(_("bad value for update parameter"));
863 if (module_list_compute(argc, argv, prefix, &pathspec, &suc.list) < 0)
867 suc.warn_if_uninitialized = 1;
869 /* Overlay the parsed .gitmodules file with .git/config */
871 git_config(submodule_config, NULL);
874 max_jobs = parallel_submodules();
876 run_processes_parallel(max_jobs,
877 update_clone_get_next_task,
878 update_clone_start_failure,
879 update_clone_task_finished,
883 * We saved the output and put it out all at once now.
885 * - the listener does not have to interleave their (checkout)
886 * work with our fetching. The writes involved in a
887 * checkout involve more straightforward sequential I/O.
888 * - the listener can avoid doing any work if fetching failed.
893 for_each_string_list_item(item, &suc.projectlines)
894 utf8_fprintf(stdout, "%s", item->string);
899 static int resolve_relative_path(int argc, const char **argv, const char *prefix)
901 struct strbuf sb = STRBUF_INIT;
903 die("submodule--helper relative_path takes exactly 2 arguments, got %d", argc);
905 printf("%s", relative_path(argv[1], argv[2], &sb));
912 int (*fn)(int, const char **, const char *);
915 static struct cmd_struct commands[] = {
916 {"list", module_list},
917 {"name", module_name},
918 {"clone", module_clone},
919 {"update-clone", update_clone},
920 {"relative-path", resolve_relative_path},
921 {"resolve-relative-url", resolve_relative_url},
922 {"resolve-relative-url-test", resolve_relative_url_test},
923 {"init", module_init}
926 int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
930 die(_("submodule--helper subcommand must be "
931 "called with a subcommand"));
933 for (i = 0; i < ARRAY_SIZE(commands); i++)
934 if (!strcmp(argv[1], commands[i].cmd))
935 return commands[i].fn(argc - 1, argv + 1, prefix);
937 die(_("'%s' is not a valid submodule--helper "
938 "subcommand"), argv[1]);