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) {
291 printf("#unmatched\n");
295 for (i = 0; i < list.nr; i++) {
296 const struct cache_entry *ce = list.entries[i];
299 printf("%06o %s U\t", ce->ce_mode, sha1_to_hex(null_sha1));
301 printf("%06o %s %d\t", ce->ce_mode, sha1_to_hex(ce->sha1), ce_stage(ce));
303 utf8_fprintf(stdout, "%s\n", ce->name);
308 static void init_submodule(const char *path, const char *prefix, int quiet)
310 const struct submodule *sub;
311 struct strbuf sb = STRBUF_INIT;
312 char *upd = NULL, *url = NULL, *displaypath;
314 /* Only loads from .gitmodules, no overlay with .git/config */
318 strbuf_addf(&sb, "%s%s", prefix, path);
319 displaypath = strbuf_detach(&sb, NULL);
321 displaypath = xstrdup(path);
323 sub = submodule_from_path(null_sha1, path);
326 die(_("No url found for submodule path '%s' in .gitmodules"),
330 * Copy url setting when it is not set yet.
331 * To look up the url in .git/config, we must not fall back to
332 * .gitmodules, so look it up directly.
335 strbuf_addf(&sb, "submodule.%s.url", sub->name);
336 if (git_config_get_string(sb.buf, &url)) {
337 url = xstrdup(sub->url);
340 die(_("No url found for submodule path '%s' in .gitmodules"),
343 /* Possibly a url relative to parent */
344 if (starts_with_dot_dot_slash(url) ||
345 starts_with_dot_slash(url)) {
346 char *remoteurl, *relurl;
347 char *remote = get_default_remote();
348 struct strbuf remotesb = STRBUF_INIT;
349 strbuf_addf(&remotesb, "remote.%s.url", remote);
352 if (git_config_get_string(remotesb.buf, &remoteurl))
354 * The repository is its own
355 * authoritative upstream
357 remoteurl = xgetcwd();
358 relurl = relative_url(remoteurl, url, NULL);
359 strbuf_release(&remotesb);
365 if (git_config_set_gently(sb.buf, url))
366 die(_("Failed to register url for submodule path '%s'"),
370 _("Submodule '%s' (%s) registered for path '%s'\n"),
371 sub->name, url, displaypath);
374 /* Copy "update" setting when it is not set yet */
376 strbuf_addf(&sb, "submodule.%s.update", sub->name);
377 if (git_config_get_string(sb.buf, &upd) &&
378 sub->update_strategy.type != SM_UPDATE_UNSPECIFIED) {
379 if (sub->update_strategy.type == SM_UPDATE_COMMAND) {
380 fprintf(stderr, _("warning: command update mode suggested for submodule '%s'\n"),
382 upd = xstrdup("none");
384 upd = xstrdup(submodule_strategy_to_string(&sub->update_strategy));
386 if (git_config_set_gently(sb.buf, upd))
387 die(_("Failed to register update mode for submodule path '%s'"), displaypath);
395 static int module_init(int argc, const char **argv, const char *prefix)
397 struct pathspec pathspec;
398 struct module_list list = MODULE_LIST_INIT;
402 struct option module_init_options[] = {
403 OPT_STRING(0, "prefix", &prefix,
405 N_("alternative anchor for relative paths")),
406 OPT__QUIET(&quiet, N_("Suppress output for initializing a submodule")),
410 const char *const git_submodule_helper_usage[] = {
411 N_("git submodule--helper init [<path>]"),
415 argc = parse_options(argc, argv, prefix, module_init_options,
416 git_submodule_helper_usage, 0);
418 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
421 for (i = 0; i < list.nr; i++)
422 init_submodule(list.entries[i]->name, prefix, quiet);
427 static int module_name(int argc, const char **argv, const char *prefix)
429 const struct submodule *sub;
432 usage(_("git submodule--helper name <path>"));
435 sub = submodule_from_path(null_sha1, argv[1]);
438 die(_("no submodule mapping found in .gitmodules for path '%s'"),
441 printf("%s\n", sub->name);
447 * Rules to sanitize configuration variables that are Ok to be passed into
448 * submodule operations from the parent project using "-c". Should only
449 * include keys which are both (a) safe and (b) necessary for proper
452 static int submodule_config_ok(const char *var)
454 if (starts_with(var, "credential."))
459 static int sanitize_submodule_config(const char *var, const char *value, void *data)
461 struct strbuf *out = data;
463 if (submodule_config_ok(var)) {
465 strbuf_addch(out, ' ');
468 sq_quotef(out, "%s=%s", var, value);
470 sq_quote_buf(out, var);
476 static void prepare_submodule_repo_env(struct argv_array *out)
478 const char * const *var;
480 for (var = local_repo_env; *var; var++) {
481 if (!strcmp(*var, CONFIG_DATA_ENVIRONMENT)) {
482 struct strbuf sanitized_config = STRBUF_INIT;
483 git_config_from_parameters(sanitize_submodule_config,
485 argv_array_pushf(out, "%s=%s", *var, sanitized_config.buf);
486 strbuf_release(&sanitized_config);
488 argv_array_push(out, *var);
494 static int clone_submodule(const char *path, const char *gitdir, const char *url,
495 const char *depth, const char *reference, int quiet)
497 struct child_process cp;
498 child_process_init(&cp);
500 argv_array_push(&cp.args, "clone");
501 argv_array_push(&cp.args, "--no-checkout");
503 argv_array_push(&cp.args, "--quiet");
505 argv_array_pushl(&cp.args, "--depth", depth, NULL);
506 if (reference && *reference)
507 argv_array_pushl(&cp.args, "--reference", reference, NULL);
508 if (gitdir && *gitdir)
509 argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
511 argv_array_push(&cp.args, url);
512 argv_array_push(&cp.args, path);
515 prepare_submodule_repo_env(&cp.env_array);
518 return run_command(&cp);
521 static int module_clone(int argc, const char **argv, const char *prefix)
523 const char *name = NULL, *url = NULL;
524 const char *reference = NULL, *depth = NULL;
526 FILE *submodule_dot_git;
527 char *p, *path = NULL, *sm_gitdir;
528 struct strbuf rel_path = STRBUF_INIT;
529 struct strbuf sb = STRBUF_INIT;
531 struct option module_clone_options[] = {
532 OPT_STRING(0, "prefix", &prefix,
534 N_("alternative anchor for relative paths")),
535 OPT_STRING(0, "path", &path,
537 N_("where the new submodule will be cloned to")),
538 OPT_STRING(0, "name", &name,
540 N_("name of the new submodule")),
541 OPT_STRING(0, "url", &url,
543 N_("url where to clone the submodule from")),
544 OPT_STRING(0, "reference", &reference,
546 N_("reference repository")),
547 OPT_STRING(0, "depth", &depth,
549 N_("depth for shallow clones")),
550 OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
554 const char *const git_submodule_helper_usage[] = {
555 N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
556 "[--reference <repository>] [--name <name>] [--depth <depth>] "
557 "--url <url> --path <path>"),
561 argc = parse_options(argc, argv, prefix, module_clone_options,
562 git_submodule_helper_usage, 0);
564 if (argc || !url || !path || !*path)
565 usage_with_options(git_submodule_helper_usage,
566 module_clone_options);
568 strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
569 sm_gitdir = xstrdup(absolute_path(sb.buf));
572 if (!is_absolute_path(path)) {
573 strbuf_addf(&sb, "%s/%s", get_git_work_tree(), path);
574 path = strbuf_detach(&sb, NULL);
576 path = xstrdup(path);
578 if (!file_exists(sm_gitdir)) {
579 if (safe_create_leading_directories_const(sm_gitdir) < 0)
580 die(_("could not create directory '%s'"), sm_gitdir);
581 if (clone_submodule(path, sm_gitdir, url, depth, reference, quiet))
582 die(_("clone of '%s' into submodule path '%s' failed"),
585 if (safe_create_leading_directories_const(path) < 0)
586 die(_("could not create directory '%s'"), path);
587 strbuf_addf(&sb, "%s/index", sm_gitdir);
588 unlink_or_warn(sb.buf);
592 /* Write a .git file in the submodule to redirect to the superproject. */
593 strbuf_addf(&sb, "%s/.git", path);
594 if (safe_create_leading_directories_const(sb.buf) < 0)
595 die(_("could not create leading directories of '%s'"), sb.buf);
596 submodule_dot_git = fopen(sb.buf, "w");
597 if (!submodule_dot_git)
598 die_errno(_("cannot open file '%s'"), sb.buf);
600 fprintf_or_die(submodule_dot_git, "gitdir: %s\n",
601 relative_path(sm_gitdir, path, &rel_path));
602 if (fclose(submodule_dot_git))
603 die(_("could not close file %s"), sb.buf);
605 strbuf_reset(&rel_path);
607 /* Redirect the worktree of the submodule in the superproject's config */
608 p = git_pathdup_submodule(path, "config");
610 die(_("could not get submodule directory for '%s'"), path);
611 git_config_set_in_file(p, "core.worktree",
612 relative_path(path, sm_gitdir, &rel_path));
614 strbuf_release(&rel_path);
621 static int module_sanitize_config(int argc, const char **argv, const char *prefix)
623 struct strbuf sanitized_config = STRBUF_INIT;
626 usage(_("git submodule--helper sanitize-config"));
628 git_config_from_parameters(sanitize_submodule_config, &sanitized_config);
629 if (sanitized_config.len)
630 printf("%s\n", sanitized_config.buf);
632 strbuf_release(&sanitized_config);
637 struct submodule_update_clone {
638 /* index into 'list', the list of submodules to look into for cloning */
640 struct module_list list;
641 unsigned warn_if_uninitialized : 1;
643 /* update parameter passed via commandline */
644 struct submodule_update_strategy update;
646 /* configuration parameters which are passed on to the children */
648 const char *reference;
650 const char *recursive_prefix;
653 /* Machine-readable status lines to be consumed by git-submodule.sh */
654 struct string_list projectlines;
656 /* If we want to stop as fast as possible and return an error */
657 unsigned quickstop : 1;
659 #define SUBMODULE_UPDATE_CLONE_INIT {0, MODULE_LIST_INIT, 0, \
660 SUBMODULE_UPDATE_STRATEGY_INIT, 0, NULL, NULL, NULL, NULL, \
661 STRING_LIST_INIT_DUP, 0}
664 static void next_submodule_warn_missing(struct submodule_update_clone *suc,
665 struct strbuf *out, const char *displaypath)
668 * Only mention uninitialized submodules when their
669 * paths have been specified.
671 if (suc->warn_if_uninitialized) {
673 _("Submodule path '%s' not initialized"),
675 strbuf_addch(out, '\n');
677 _("Maybe you want to use 'update --init'?"));
678 strbuf_addch(out, '\n');
683 * Determine whether 'ce' needs to be cloned. If so, prepare the 'child' to
684 * run the clone. Returns 1 if 'ce' needs to be cloned, 0 otherwise.
686 static int prepare_to_clone_next_submodule(const struct cache_entry *ce,
687 struct child_process *child,
688 struct submodule_update_clone *suc,
691 const struct submodule *sub = NULL;
692 struct strbuf displaypath_sb = STRBUF_INIT;
693 struct strbuf sb = STRBUF_INIT;
694 const char *displaypath = NULL;
696 int needs_cloning = 0;
699 if (suc->recursive_prefix)
700 strbuf_addf(&sb, "%s/%s", suc->recursive_prefix, ce->name);
702 strbuf_addf(&sb, "%s", ce->name);
703 strbuf_addf(out, _("Skipping unmerged submodule %s"), sb.buf);
704 strbuf_addch(out, '\n');
708 sub = submodule_from_path(null_sha1, ce->name);
710 if (suc->recursive_prefix)
711 displaypath = relative_path(suc->recursive_prefix,
712 ce->name, &displaypath_sb);
714 displaypath = ce->name;
717 next_submodule_warn_missing(suc, out, displaypath);
721 if (suc->update.type == SM_UPDATE_NONE
722 || (suc->update.type == SM_UPDATE_UNSPECIFIED
723 && sub->update_strategy.type == SM_UPDATE_NONE)) {
724 strbuf_addf(out, _("Skipping submodule '%s'"), displaypath);
725 strbuf_addch(out, '\n');
730 * Looking up the url in .git/config.
731 * We must not fall back to .gitmodules as we only want
732 * to process configured submodules.
735 strbuf_addf(&sb, "submodule.%s.url", sub->name);
736 git_config_get_string(sb.buf, &url);
738 next_submodule_warn_missing(suc, out, displaypath);
743 strbuf_addf(&sb, "%s/.git", ce->name);
744 needs_cloning = !file_exists(sb.buf);
747 strbuf_addf(&sb, "%06o %s %d %d\t%s\n", ce->ce_mode,
748 sha1_to_hex(ce->sha1), ce_stage(ce),
749 needs_cloning, ce->name);
750 string_list_append(&suc->projectlines, sb.buf);
757 child->stdout_to_stderr = 1;
759 argv_array_push(&child->args, "submodule--helper");
760 argv_array_push(&child->args, "clone");
762 argv_array_push(&child->args, "--quiet");
764 argv_array_pushl(&child->args, "--prefix", suc->prefix, NULL);
765 argv_array_pushl(&child->args, "--path", sub->path, NULL);
766 argv_array_pushl(&child->args, "--name", sub->name, NULL);
767 argv_array_pushl(&child->args, "--url", url, NULL);
769 argv_array_push(&child->args, suc->reference);
771 argv_array_push(&child->args, suc->depth);
775 strbuf_reset(&displaypath_sb);
778 return needs_cloning;
781 static int update_clone_get_next_task(struct child_process *child,
786 struct submodule_update_clone *suc = suc_cb;
788 for (; suc->current < suc->list.nr; suc->current++) {
789 const struct cache_entry *ce = suc->list.entries[suc->current];
790 if (prepare_to_clone_next_submodule(ce, child, suc, err)) {
798 static int update_clone_start_failure(struct strbuf *err,
802 struct submodule_update_clone *suc = suc_cb;
807 static int update_clone_task_finished(int result,
812 struct submodule_update_clone *suc = suc_cb;
821 static int update_clone(int argc, const char **argv, const char *prefix)
823 const char *update = NULL;
825 struct string_list_item *item;
826 struct pathspec pathspec;
827 struct submodule_update_clone suc = SUBMODULE_UPDATE_CLONE_INIT;
829 struct option module_update_clone_options[] = {
830 OPT_STRING(0, "prefix", &prefix,
832 N_("path into the working tree")),
833 OPT_STRING(0, "recursive-prefix", &suc.recursive_prefix,
835 N_("path into the working tree, across nested "
836 "submodule boundaries")),
837 OPT_STRING(0, "update", &update,
839 N_("rebase, merge, checkout or none")),
840 OPT_STRING(0, "reference", &suc.reference, N_("repo"),
841 N_("reference repository")),
842 OPT_STRING(0, "depth", &suc.depth, "<depth>",
843 N_("Create a shallow clone truncated to the "
844 "specified number of revisions")),
845 OPT_INTEGER('j', "jobs", &max_jobs,
846 N_("parallel jobs")),
847 OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
851 const char *const git_submodule_helper_usage[] = {
852 N_("git submodule--helper update_clone [--prefix=<path>] [<path>...]"),
857 argc = parse_options(argc, argv, prefix, module_update_clone_options,
858 git_submodule_helper_usage, 0);
861 if (parse_submodule_update_strategy(update, &suc.update) < 0)
862 die(_("bad value for update parameter"));
864 if (module_list_compute(argc, argv, prefix, &pathspec, &suc.list) < 0)
868 suc.warn_if_uninitialized = 1;
870 /* Overlay the parsed .gitmodules file with .git/config */
872 git_config(submodule_config, NULL);
875 max_jobs = parallel_submodules();
877 run_processes_parallel(max_jobs,
878 update_clone_get_next_task,
879 update_clone_start_failure,
880 update_clone_task_finished,
884 * We saved the output and put it out all at once now.
886 * - the listener does not have to interleave their (checkout)
887 * work with our fetching. The writes involved in a
888 * checkout involve more straightforward sequential I/O.
889 * - the listener can avoid doing any work if fetching failed.
894 for_each_string_list_item(item, &suc.projectlines)
895 utf8_fprintf(stdout, "%s", item->string);
902 int (*fn)(int, const char **, const char *);
905 static struct cmd_struct commands[] = {
906 {"list", module_list},
907 {"name", module_name},
908 {"clone", module_clone},
909 {"sanitize-config", module_sanitize_config},
910 {"update-clone", update_clone},
911 {"resolve-relative-url", resolve_relative_url},
912 {"resolve-relative-url-test", resolve_relative_url_test},
913 {"init", module_init}
916 int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
920 die(_("submodule--helper subcommand must be "
921 "called with a subcommand"));
923 for (i = 0; i < ARRAY_SIZE(commands); i++)
924 if (!strcmp(argv[1], commands[i].cmd))
925 return commands[i].fn(argc - 1, argv + 1, prefix);
927 die(_("'%s' is not a valid submodule--helper "
928 "subcommand"), argv[1]);