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://a.com/c same as previous line, but
99 * ignore trailing slash in url
100 * http://a.com/b ../../c http://c error out
101 * http://a.com/b ../../../c http:/c error out
102 * http://a.com/b ../../../../c http:c error out
103 * http://a.com/b ../../../../../c .:c error out
104 * NEEDSWORK: Given how chop_last_dir() works, this function is broken
105 * when a local part has a colon in its path component, too.
107 static char *relative_url(const char *remote_url,
114 char *remoteurl = xstrdup(remote_url);
115 struct strbuf sb = STRBUF_INIT;
116 size_t len = strlen(remoteurl);
118 if (is_dir_sep(remoteurl[len-1]))
119 remoteurl[len-1] = '\0';
121 if (!url_is_local_not_ssh(remoteurl) || is_absolute_path(remoteurl))
126 * Prepend a './' to ensure all relative
127 * remoteurls start with './' or '../'
129 if (!starts_with_dot_slash(remoteurl) &&
130 !starts_with_dot_dot_slash(remoteurl)) {
132 strbuf_addf(&sb, "./%s", remoteurl);
134 remoteurl = strbuf_detach(&sb, NULL);
138 * When the url starts with '../', remove that and the
139 * last directory in remoteurl.
142 if (starts_with_dot_dot_slash(url)) {
144 colonsep |= chop_last_dir(&remoteurl, is_relative);
145 } else if (starts_with_dot_slash(url))
151 strbuf_addf(&sb, "%s%s%s", remoteurl, colonsep ? ":" : "/", url);
154 if (starts_with_dot_slash(sb.buf))
155 out = xstrdup(sb.buf + 2);
157 out = xstrdup(sb.buf);
160 if (!up_path || !is_relative)
163 strbuf_addf(&sb, "%s%s", up_path, out);
165 return strbuf_detach(&sb, NULL);
168 static int resolve_relative_url(int argc, const char **argv, const char *prefix)
170 char *remoteurl = NULL;
171 char *remote = get_default_remote();
172 const char *up_path = NULL;
175 struct strbuf sb = STRBUF_INIT;
177 if (argc != 2 && argc != 3)
178 die("resolve-relative-url only accepts one or two arguments");
181 strbuf_addf(&sb, "remote.%s.url", remote);
184 if (git_config_get_string(sb.buf, &remoteurl))
185 /* the repository is its own authoritative upstream */
186 remoteurl = xgetcwd();
191 res = relative_url(remoteurl, url, up_path);
198 static int resolve_relative_url_test(int argc, const char **argv, const char *prefix)
200 char *remoteurl, *res;
201 const char *up_path, *url;
204 die("resolve-relative-url-test only accepts three arguments: <up_path> <remoteurl> <url>");
207 remoteurl = xstrdup(argv[2]);
210 if (!strcmp(up_path, "(null)"))
213 res = relative_url(remoteurl, url, up_path);
221 const struct cache_entry **entries;
224 #define MODULE_LIST_INIT { NULL, 0, 0 }
226 static int module_list_compute(int argc, const char **argv,
228 struct pathspec *pathspec,
229 struct module_list *list)
232 char *ps_matched = NULL;
233 parse_pathspec(pathspec, 0,
234 PATHSPEC_PREFER_FULL |
235 PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
239 ps_matched = xcalloc(pathspec->nr, 1);
241 if (read_cache() < 0)
242 die(_("index file corrupt"));
244 for (i = 0; i < active_nr; i++) {
245 const struct cache_entry *ce = active_cache[i];
247 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce),
249 !S_ISGITLINK(ce->ce_mode))
252 ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
253 list->entries[list->nr++] = ce;
254 while (i + 1 < active_nr &&
255 !strcmp(ce->name, active_cache[i + 1]->name))
257 * Skip entries with the same name in different stages
258 * to make sure an entry is returned only once.
263 if (ps_matched && report_path_error(ps_matched, pathspec, prefix))
271 static int module_list(int argc, const char **argv, const char *prefix)
274 struct pathspec pathspec;
275 struct module_list list = MODULE_LIST_INIT;
277 struct option module_list_options[] = {
278 OPT_STRING(0, "prefix", &prefix,
280 N_("alternative anchor for relative paths")),
284 const char *const git_submodule_helper_usage[] = {
285 N_("git submodule--helper list [--prefix=<path>] [<path>...]"),
289 argc = parse_options(argc, argv, prefix, module_list_options,
290 git_submodule_helper_usage, 0);
292 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0) {
293 printf("#unmatched\n");
297 for (i = 0; i < list.nr; i++) {
298 const struct cache_entry *ce = list.entries[i];
301 printf("%06o %s U\t", ce->ce_mode, sha1_to_hex(null_sha1));
303 printf("%06o %s %d\t", ce->ce_mode, sha1_to_hex(ce->sha1), ce_stage(ce));
305 utf8_fprintf(stdout, "%s\n", ce->name);
310 static void init_submodule(const char *path, const char *prefix, int quiet)
312 const struct submodule *sub;
313 struct strbuf sb = STRBUF_INIT;
314 char *upd = NULL, *url = NULL, *displaypath;
316 /* Only loads from .gitmodules, no overlay with .git/config */
320 strbuf_addf(&sb, "%s%s", prefix, path);
321 displaypath = strbuf_detach(&sb, NULL);
323 displaypath = xstrdup(path);
325 sub = submodule_from_path(null_sha1, path);
328 die(_("No url found for submodule path '%s' in .gitmodules"),
332 * Copy url setting when it is not set yet.
333 * To look up the url in .git/config, we must not fall back to
334 * .gitmodules, so look it up directly.
337 strbuf_addf(&sb, "submodule.%s.url", sub->name);
338 if (git_config_get_string(sb.buf, &url)) {
339 url = xstrdup(sub->url);
342 die(_("No url found for submodule path '%s' in .gitmodules"),
345 /* Possibly a url relative to parent */
346 if (starts_with_dot_dot_slash(url) ||
347 starts_with_dot_slash(url)) {
348 char *remoteurl, *relurl;
349 char *remote = get_default_remote();
350 struct strbuf remotesb = STRBUF_INIT;
351 strbuf_addf(&remotesb, "remote.%s.url", remote);
354 if (git_config_get_string(remotesb.buf, &remoteurl))
356 * The repository is its own
357 * authoritative upstream
359 remoteurl = xgetcwd();
360 relurl = relative_url(remoteurl, url, NULL);
361 strbuf_release(&remotesb);
367 if (git_config_set_gently(sb.buf, url))
368 die(_("Failed to register url for submodule path '%s'"),
372 _("Submodule '%s' (%s) registered for path '%s'\n"),
373 sub->name, url, displaypath);
376 /* Copy "update" setting when it is not set yet */
378 strbuf_addf(&sb, "submodule.%s.update", sub->name);
379 if (git_config_get_string(sb.buf, &upd) &&
380 sub->update_strategy.type != SM_UPDATE_UNSPECIFIED) {
381 if (sub->update_strategy.type == SM_UPDATE_COMMAND) {
382 fprintf(stderr, _("warning: command update mode suggested for submodule '%s'\n"),
384 upd = xstrdup("none");
386 upd = xstrdup(submodule_strategy_to_string(&sub->update_strategy));
388 if (git_config_set_gently(sb.buf, upd))
389 die(_("Failed to register update mode for submodule path '%s'"), displaypath);
397 static int module_init(int argc, const char **argv, const char *prefix)
399 struct pathspec pathspec;
400 struct module_list list = MODULE_LIST_INIT;
404 struct option module_init_options[] = {
405 OPT_STRING(0, "prefix", &prefix,
407 N_("alternative anchor for relative paths")),
408 OPT__QUIET(&quiet, N_("Suppress output for initializing a submodule")),
412 const char *const git_submodule_helper_usage[] = {
413 N_("git submodule--helper init [<path>]"),
417 argc = parse_options(argc, argv, prefix, module_init_options,
418 git_submodule_helper_usage, 0);
420 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
423 for (i = 0; i < list.nr; i++)
424 init_submodule(list.entries[i]->name, prefix, quiet);
429 static int module_name(int argc, const char **argv, const char *prefix)
431 const struct submodule *sub;
434 usage(_("git submodule--helper name <path>"));
437 sub = submodule_from_path(null_sha1, argv[1]);
440 die(_("no submodule mapping found in .gitmodules for path '%s'"),
443 printf("%s\n", sub->name);
447 static int clone_submodule(const char *path, const char *gitdir, const char *url,
448 const char *depth, const char *reference, int quiet)
450 struct child_process cp;
451 child_process_init(&cp);
453 argv_array_push(&cp.args, "clone");
454 argv_array_push(&cp.args, "--no-checkout");
456 argv_array_push(&cp.args, "--quiet");
458 argv_array_pushl(&cp.args, "--depth", depth, NULL);
459 if (reference && *reference)
460 argv_array_pushl(&cp.args, "--reference", reference, NULL);
461 if (gitdir && *gitdir)
462 argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
464 argv_array_push(&cp.args, url);
465 argv_array_push(&cp.args, path);
468 cp.env = local_repo_env;
471 return run_command(&cp);
474 static int module_clone(int argc, const char **argv, const char *prefix)
476 const char *name = NULL, *url = NULL;
477 const char *reference = 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;
484 struct option module_clone_options[] = {
485 OPT_STRING(0, "prefix", &prefix,
487 N_("alternative anchor for relative paths")),
488 OPT_STRING(0, "path", &path,
490 N_("where the new submodule will be cloned to")),
491 OPT_STRING(0, "name", &name,
493 N_("name of the new submodule")),
494 OPT_STRING(0, "url", &url,
496 N_("url where to clone the submodule from")),
497 OPT_STRING(0, "reference", &reference,
499 N_("reference repository")),
500 OPT_STRING(0, "depth", &depth,
502 N_("depth for shallow clones")),
503 OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
507 const char *const git_submodule_helper_usage[] = {
508 N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
509 "[--reference <repository>] [--name <name>] [--url <url>]"
510 "[--depth <depth>] [--] [<path>...]"),
514 argc = parse_options(argc, argv, prefix, module_clone_options,
515 git_submodule_helper_usage, 0);
518 die(_("submodule--helper: unspecified or empty --path"));
520 strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
521 sm_gitdir = xstrdup(absolute_path(sb.buf));
524 if (!is_absolute_path(path)) {
525 strbuf_addf(&sb, "%s/%s", get_git_work_tree(), path);
526 path = strbuf_detach(&sb, NULL);
528 path = xstrdup(path);
530 if (!file_exists(sm_gitdir)) {
531 if (safe_create_leading_directories_const(sm_gitdir) < 0)
532 die(_("could not create directory '%s'"), sm_gitdir);
533 if (clone_submodule(path, sm_gitdir, url, depth, reference, quiet))
534 die(_("clone of '%s' into submodule path '%s' failed"),
537 if (safe_create_leading_directories_const(path) < 0)
538 die(_("could not create directory '%s'"), path);
539 strbuf_addf(&sb, "%s/index", sm_gitdir);
540 unlink_or_warn(sb.buf);
544 /* Write a .git file in the submodule to redirect to the superproject. */
545 strbuf_addf(&sb, "%s/.git", path);
546 if (safe_create_leading_directories_const(sb.buf) < 0)
547 die(_("could not create leading directories of '%s'"), sb.buf);
548 submodule_dot_git = fopen(sb.buf, "w");
549 if (!submodule_dot_git)
550 die_errno(_("cannot open file '%s'"), sb.buf);
552 fprintf_or_die(submodule_dot_git, "gitdir: %s\n",
553 relative_path(sm_gitdir, path, &rel_path));
554 if (fclose(submodule_dot_git))
555 die(_("could not close file %s"), sb.buf);
557 strbuf_reset(&rel_path);
559 /* Redirect the worktree of the submodule in the superproject's config */
560 p = git_pathdup_submodule(path, "config");
562 die(_("could not get submodule directory for '%s'"), path);
563 git_config_set_in_file(p, "core.worktree",
564 relative_path(path, sm_gitdir, &rel_path));
566 strbuf_release(&rel_path);
573 struct submodule_update_clone {
574 /* index into 'list', the list of submodules to look into for cloning */
576 struct module_list list;
577 unsigned warn_if_uninitialized : 1;
579 /* update parameter passed via commandline */
580 struct submodule_update_strategy update;
582 /* configuration parameters which are passed on to the children */
584 const char *reference;
586 const char *recursive_prefix;
589 /* Machine-readable status lines to be consumed by git-submodule.sh */
590 struct string_list projectlines;
592 /* If we want to stop as fast as possible and return an error */
593 unsigned quickstop : 1;
595 #define SUBMODULE_UPDATE_CLONE_INIT {0, MODULE_LIST_INIT, 0, \
596 SUBMODULE_UPDATE_STRATEGY_INIT, 0, NULL, NULL, NULL, NULL, \
597 STRING_LIST_INIT_DUP, 0}
600 static void next_submodule_warn_missing(struct submodule_update_clone *suc,
601 struct strbuf *out, const char *displaypath)
604 * Only mention uninitialized submodules when their
605 * paths have been specified.
607 if (suc->warn_if_uninitialized) {
609 _("Submodule path '%s' not initialized"),
611 strbuf_addch(out, '\n');
613 _("Maybe you want to use 'update --init'?"));
614 strbuf_addch(out, '\n');
619 * Determine whether 'ce' needs to be cloned. If so, prepare the 'child' to
620 * run the clone. Returns 1 if 'ce' needs to be cloned, 0 otherwise.
622 static int prepare_to_clone_next_submodule(const struct cache_entry *ce,
623 struct child_process *child,
624 struct submodule_update_clone *suc,
627 const struct submodule *sub = NULL;
628 struct strbuf displaypath_sb = STRBUF_INIT;
629 struct strbuf sb = STRBUF_INIT;
630 const char *displaypath = NULL;
632 int needs_cloning = 0;
635 if (suc->recursive_prefix)
636 strbuf_addf(&sb, "%s/%s", suc->recursive_prefix, ce->name);
638 strbuf_addf(&sb, "%s", ce->name);
639 strbuf_addf(out, _("Skipping unmerged submodule %s"), sb.buf);
640 strbuf_addch(out, '\n');
644 sub = submodule_from_path(null_sha1, ce->name);
646 if (suc->recursive_prefix)
647 displaypath = relative_path(suc->recursive_prefix,
648 ce->name, &displaypath_sb);
650 displaypath = ce->name;
653 next_submodule_warn_missing(suc, out, displaypath);
657 if (suc->update.type == SM_UPDATE_NONE
658 || (suc->update.type == SM_UPDATE_UNSPECIFIED
659 && sub->update_strategy.type == SM_UPDATE_NONE)) {
660 strbuf_addf(out, _("Skipping submodule '%s'"), displaypath);
661 strbuf_addch(out, '\n');
666 * Looking up the url in .git/config.
667 * We must not fall back to .gitmodules as we only want
668 * to process configured submodules.
671 strbuf_addf(&sb, "submodule.%s.url", sub->name);
672 git_config_get_string(sb.buf, &url);
674 next_submodule_warn_missing(suc, out, displaypath);
679 strbuf_addf(&sb, "%s/.git", ce->name);
680 needs_cloning = !file_exists(sb.buf);
683 strbuf_addf(&sb, "%06o %s %d %d\t%s\n", ce->ce_mode,
684 sha1_to_hex(ce->sha1), ce_stage(ce),
685 needs_cloning, ce->name);
686 string_list_append(&suc->projectlines, sb.buf);
693 child->stdout_to_stderr = 1;
695 argv_array_push(&child->args, "submodule--helper");
696 argv_array_push(&child->args, "clone");
698 argv_array_push(&child->args, "--quiet");
700 argv_array_pushl(&child->args, "--prefix", suc->prefix, NULL);
701 argv_array_pushl(&child->args, "--path", sub->path, NULL);
702 argv_array_pushl(&child->args, "--name", sub->name, NULL);
703 argv_array_pushl(&child->args, "--url", url, NULL);
705 argv_array_push(&child->args, suc->reference);
707 argv_array_push(&child->args, suc->depth);
711 strbuf_reset(&displaypath_sb);
714 return needs_cloning;
717 static int update_clone_get_next_task(struct child_process *child,
722 struct submodule_update_clone *suc = suc_cb;
724 for (; suc->current < suc->list.nr; suc->current++) {
725 const struct cache_entry *ce = suc->list.entries[suc->current];
726 if (prepare_to_clone_next_submodule(ce, child, suc, err)) {
734 static int update_clone_start_failure(struct strbuf *err,
738 struct submodule_update_clone *suc = suc_cb;
743 static int update_clone_task_finished(int result,
748 struct submodule_update_clone *suc = suc_cb;
757 static int update_clone(int argc, const char **argv, const char *prefix)
759 const char *update = NULL;
761 struct string_list_item *item;
762 struct pathspec pathspec;
763 struct submodule_update_clone suc = SUBMODULE_UPDATE_CLONE_INIT;
765 struct option module_update_clone_options[] = {
766 OPT_STRING(0, "prefix", &prefix,
768 N_("path into the working tree")),
769 OPT_STRING(0, "recursive-prefix", &suc.recursive_prefix,
771 N_("path into the working tree, across nested "
772 "submodule boundaries")),
773 OPT_STRING(0, "update", &update,
775 N_("rebase, merge, checkout or none")),
776 OPT_STRING(0, "reference", &suc.reference, N_("repo"),
777 N_("reference repository")),
778 OPT_STRING(0, "depth", &suc.depth, "<depth>",
779 N_("Create a shallow clone truncated to the "
780 "specified number of revisions")),
781 OPT_INTEGER('j', "jobs", &max_jobs,
782 N_("parallel jobs")),
783 OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
787 const char *const git_submodule_helper_usage[] = {
788 N_("git submodule--helper update_clone [--prefix=<path>] [<path>...]"),
793 argc = parse_options(argc, argv, prefix, module_update_clone_options,
794 git_submodule_helper_usage, 0);
797 if (parse_submodule_update_strategy(update, &suc.update) < 0)
798 die(_("bad value for update parameter"));
800 if (module_list_compute(argc, argv, prefix, &pathspec, &suc.list) < 0)
804 suc.warn_if_uninitialized = 1;
806 /* Overlay the parsed .gitmodules file with .git/config */
808 git_config(submodule_config, NULL);
811 max_jobs = parallel_submodules();
813 run_processes_parallel(max_jobs,
814 update_clone_get_next_task,
815 update_clone_start_failure,
816 update_clone_task_finished,
820 * We saved the output and put it out all at once now.
822 * - the listener does not have to interleave their (checkout)
823 * work with our fetching. The writes involved in a
824 * checkout involve more straightforward sequential I/O.
825 * - the listener can avoid doing any work if fetching failed.
830 for_each_string_list_item(item, &suc.projectlines)
831 utf8_fprintf(stdout, "%s", item->string);
838 int (*fn)(int, const char **, const char *);
841 static struct cmd_struct commands[] = {
842 {"list", module_list},
843 {"name", module_name},
844 {"clone", module_clone},
845 {"update-clone", update_clone},
846 {"resolve-relative-url", resolve_relative_url},
847 {"resolve-relative-url-test", resolve_relative_url_test},
848 {"init", module_init}
851 int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
855 die(_("submodule--helper subcommand must be "
856 "called with a subcommand"));
858 for (i = 0; i < ARRAY_SIZE(commands); i++)
859 if (!strcmp(argv[1], commands[i].cmd))
860 return commands[i].fn(argc - 1, argv + 1, prefix);
862 die(_("'%s' is not a valid submodule--helper "
863 "subcommand"), argv[1]);