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strvec: declare the `strvec_push_nodup()` function globally
[git.git] / scalar.c
blob1fe8a93e6529a25679e506fdc18864f72a3905b2
1 /*
2 * The Scalar command-line interface.
3 */
4
5 #define USE_THE_REPOSITORY_VARIABLE
6
7 #include "git-compat-util.h"
8 #include "abspath.h"
9 #include "gettext.h"
10 #include "parse-options.h"
11 #include "config.h"
12 #include "run-command.h"
13 #include "simple-ipc.h"
14 #include "fsmonitor-ipc.h"
15 #include "fsmonitor-settings.h"
16 #include "refs.h"
17 #include "dir.h"
18 #include "packfile.h"
19 #include "help.h"
20 #include "setup.h"
21 #include "trace2.h"
22
23 static void setup_enlistment_directory(int argc, const char **argv,
24 const char * const *usagestr,
25 const struct option *options,
26 struct strbuf *enlistment_root)
27 {
28 struct strbuf path = STRBUF_INIT;
29 int enlistment_is_repo_parent = 0;
30 size_t len;
31
32 if (startup_info->have_repository)
33 BUG("gitdir already set up?!?");
34
35 if (argc > 1)
36 usage_with_options(usagestr, options);
37
38 /* find the worktree, determine its corresponding root */
39 if (argc == 1) {
40 strbuf_add_absolute_path(&path, argv[0]);
41 if (!is_directory(path.buf))
42 die(_("'%s' does not exist"), path.buf);
43 if (chdir(path.buf) < 0)
44 die_errno(_("could not switch to '%s'"), path.buf);
45 } else if (strbuf_getcwd(&path) < 0)
46 die(_("need a working directory"));
47
48 strbuf_trim_trailing_dir_sep(&path);
49
50 /* check if currently in enlistment root with src/ workdir */
51 len = path.len;
52 strbuf_addstr(&path, "/src");
53 if (is_nonbare_repository_dir(&path)) {
54 enlistment_is_repo_parent = 1;
55 if (chdir(path.buf) < 0)
56 die_errno(_("could not switch to '%s'"), path.buf);
57 }
58 strbuf_setlen(&path, len);
59
60 setup_git_directory();
61
62 if (!the_repository->worktree)
63 die(_("Scalar enlistments require a worktree"));
64
65 if (enlistment_root) {
66 if (enlistment_is_repo_parent)
67 strbuf_addbuf(enlistment_root, &path);
68 else
69 strbuf_addstr(enlistment_root, the_repository->worktree);
70 }
71
72 strbuf_release(&path);
73 }
74
75 LAST_ARG_MUST_BE_NULL
76 static int run_git(const char *arg, ...)
77 {
78 struct child_process cmd = CHILD_PROCESS_INIT;
79 va_list args;
80 const char *p;
81
82 va_start(args, arg);
83 strvec_push(&cmd.args, arg);
84 while ((p = va_arg(args, const char *)))
85 strvec_push(&cmd.args, p);
86 va_end(args);
87
88 cmd.git_cmd = 1;
89 return run_command(&cmd);
90 }
91
92 struct scalar_config {
93 const char *key;
94 const char *value;
95 int overwrite_on_reconfigure;
96 };
97
98 static int set_scalar_config(const struct scalar_config *config, int reconfigure)
99 {
100 char *value = NULL;
101 int res;
102
103 if ((reconfigure && config->overwrite_on_reconfigure) ||
104 git_config_get_string(config->key, &value)) {
105 trace2_data_string("scalar", the_repository, config->key, "created");
106 res = git_config_set_gently(config->key, config->value);
107 } else {
108 trace2_data_string("scalar", the_repository, config->key, "exists");
109 res = 0;
110 }
111
112 free(value);
113 return res;
114 }
115
116 static int have_fsmonitor_support(void)
117 {
118 return fsmonitor_ipc__is_supported() &&
119 fsm_settings__get_reason(the_repository) == FSMONITOR_REASON_OK;
120 }
121
122 static int set_recommended_config(int reconfigure)
123 {
124 struct scalar_config config[] = {
125 /* Required */
126 { "am.keepCR", "true", 1 },
127 { "core.FSCache", "true", 1 },
128 { "core.multiPackIndex", "true", 1 },
129 { "core.preloadIndex", "true", 1 },
130 #ifndef WIN32
131 { "core.untrackedCache", "true", 1 },
132 #else
133 /*
134 * Unfortunately, Scalar's Functional Tests demonstrated
135 * that the untracked cache feature is unreliable on Windows
136 * (which is a bummer because that platform would benefit the
137 * most from it). For some reason, freshly created files seem
138 * not to update the directory's `lastModified` time
139 * immediately, but the untracked cache would need to rely on
140 * that.
141 *
142 * Therefore, with a sad heart, we disable this very useful
143 * feature on Windows.
144 */
145 { "core.untrackedCache", "false", 1 },
146 #endif
147 { "core.logAllRefUpdates", "true", 1 },
148 { "credential.https://dev.azure.com.useHttpPath", "true", 1 },
149 { "credential.validate", "false", 1 }, /* GCM4W-only */
150 { "gc.auto", "0", 1 },
151 { "gui.GCWarning", "false", 1 },
152 { "index.skipHash", "false", 1 },
153 { "index.threads", "true", 1 },
154 { "index.version", "4", 1 },
155 { "merge.stat", "false", 1 },
156 { "merge.renames", "true", 1 },
157 { "pack.useBitmaps", "false", 1 },
158 { "pack.useSparse", "true", 1 },
159 { "receive.autoGC", "false", 1 },
160 { "feature.manyFiles", "false", 1 },
161 { "feature.experimental", "false", 1 },
162 { "fetch.unpackLimit", "1", 1 },
163 { "fetch.writeCommitGraph", "false", 1 },
164 #ifdef WIN32
165 { "http.sslBackend", "schannel", 1 },
166 #endif
167 /* Optional */
168 { "status.aheadBehind", "false" },
169 { "commitGraph.generationVersion", "1" },
170 { "core.autoCRLF", "false" },
171 { "core.safeCRLF", "false" },
172 { "fetch.showForcedUpdates", "false" },
173 { NULL, NULL },
174 };
175 int i;
176 char *value;
177
178 for (i = 0; config[i].key; i++) {
179 if (set_scalar_config(config + i, reconfigure))
180 return error(_("could not configure %s=%s"),
181 config[i].key, config[i].value);
182 }
183
184 if (have_fsmonitor_support()) {
185 struct scalar_config fsmonitor = { "core.fsmonitor", "true" };
186 if (set_scalar_config(&fsmonitor, reconfigure))
187 return error(_("could not configure %s=%s"),
188 fsmonitor.key, fsmonitor.value);
189 }
190
191 /*
192 * The `log.excludeDecoration` setting is special because it allows
193 * for multiple values.
194 */
195 if (git_config_get_string("log.excludeDecoration", &value)) {
196 trace2_data_string("scalar", the_repository,
197 "log.excludeDecoration", "created");
198 if (git_config_set_multivar_gently("log.excludeDecoration",
199 "refs/prefetch/*",
200 CONFIG_REGEX_NONE, 0))
201 return error(_("could not configure "
202 "log.excludeDecoration"));
203 } else {
204 trace2_data_string("scalar", the_repository,
205 "log.excludeDecoration", "exists");
206 free(value);
207 }
208
209 return 0;
210 }
211
212 static int toggle_maintenance(int enable)
213 {
214 return run_git("maintenance",
215 enable ? "start" : "unregister",
216 enable ? NULL : "--force",
217 NULL);
218 }
219
220 static int add_or_remove_enlistment(int add)
221 {
222 int res;
223
224 if (!the_repository->worktree)
225 die(_("Scalar enlistments require a worktree"));
226
227 res = run_git("config", "--global", "--get", "--fixed-value",
228 "scalar.repo", the_repository->worktree, NULL);
229
230 /*
231 * If we want to add and the setting is already there, then do nothing.
232 * If we want to remove and the setting is not there, then do nothing.
233 */
234 if ((add && !res) || (!add && res))
235 return 0;
236
237 return run_git("config", "--global", add ? "--add" : "--unset",
238 add ? "--no-fixed-value" : "--fixed-value",
239 "scalar.repo", the_repository->worktree, NULL);
240 }
241
242 static int start_fsmonitor_daemon(void)
243 {
244 assert(have_fsmonitor_support());
245
246 if (fsmonitor_ipc__get_state() != IPC_STATE__LISTENING)
247 return run_git("fsmonitor--daemon", "start", NULL);
248
249 return 0;
250 }
251
252 static int stop_fsmonitor_daemon(void)
253 {
254 assert(have_fsmonitor_support());
255
256 if (fsmonitor_ipc__get_state() == IPC_STATE__LISTENING)
257 return run_git("fsmonitor--daemon", "stop", NULL);
258
259 return 0;
260 }
261
262 static int register_dir(void)
263 {
264 if (add_or_remove_enlistment(1))
265 return error(_("could not add enlistment"));
266
267 if (set_recommended_config(0))
268 return error(_("could not set recommended config"));
269
270 if (toggle_maintenance(1))
271 warning(_("could not turn on maintenance"));
272
273 if (have_fsmonitor_support() && start_fsmonitor_daemon()) {
274 return error(_("could not start the FSMonitor daemon"));
275 }
276
277 return 0;
278 }
279
280 static int unregister_dir(void)
281 {
282 int res = 0;
283
284 if (toggle_maintenance(0))
285 res = error(_("could not turn off maintenance"));
286
287 if (add_or_remove_enlistment(0))
288 res = error(_("could not remove enlistment"));
289
290 return res;
291 }
292
293 /* printf-style interface, expects `<key>=<value>` argument */
294 __attribute__((format (printf, 1, 2)))
295 static int set_config(const char *fmt, ...)
296 {
297 struct strbuf buf = STRBUF_INIT;
298 char *value;
299 int res;
300 va_list args;
301
302 va_start(args, fmt);
303 strbuf_vaddf(&buf, fmt, args);
304 va_end(args);
305
306 value = strchr(buf.buf, '=');
307 if (value)
308 *(value++) = '\0';
309 res = git_config_set_gently(buf.buf, value);
310 strbuf_release(&buf);
311
312 return res;
313 }
314
315 static char *remote_default_branch(const char *url)
316 {
317 struct child_process cp = CHILD_PROCESS_INIT;
318 struct strbuf out = STRBUF_INIT;
319
320 cp.git_cmd = 1;
321 strvec_pushl(&cp.args, "ls-remote", "--symref", url, "HEAD", NULL);
322 if (!pipe_command(&cp, NULL, 0, &out, 0, NULL, 0)) {
323 const char *line = out.buf;
324
325 while (*line) {
326 const char *eol = strchrnul(line, '\n'), *p;
327 size_t len = eol - line;
328 char *branch;
329
330 if (!skip_prefix(line, "ref: ", &p) ||
331 !strip_suffix_mem(line, &len, "\tHEAD")) {
332 line = eol + (*eol == '\n');
333 continue;
334 }
335
336 eol = line + len;
337 if (skip_prefix(p, "refs/heads/", &p)) {
338 branch = xstrndup(p, eol - p);
339 strbuf_release(&out);
340 return branch;
341 }
342
343 error(_("remote HEAD is not a branch: '%.*s'"),
344 (int)(eol - p), p);
345 strbuf_release(&out);
346 return NULL;
347 }
348 }
349 warning(_("failed to get default branch name from remote; "
350 "using local default"));
351 strbuf_reset(&out);
352
353 child_process_init(&cp);
354 cp.git_cmd = 1;
355 strvec_pushl(&cp.args, "symbolic-ref", "--short", "HEAD", NULL);
356 if (!pipe_command(&cp, NULL, 0, &out, 0, NULL, 0)) {
357 strbuf_trim(&out);
358 return strbuf_detach(&out, NULL);
359 }
360
361 strbuf_release(&out);
362 error(_("failed to get default branch name"));
363 return NULL;
364 }
365
366 static int delete_enlistment(struct strbuf *enlistment)
367 {
368 struct strbuf parent = STRBUF_INIT;
369 size_t offset;
370 char *path_sep;
371
372 if (unregister_dir())
373 return error(_("failed to unregister repository"));
374
375 /*
376 * Change the current directory to one outside of the enlistment so
377 * that we may delete everything underneath it.
378 */
379 offset = offset_1st_component(enlistment->buf);
380 path_sep = find_last_dir_sep(enlistment->buf + offset);
381 strbuf_add(&parent, enlistment->buf,
382 path_sep ? path_sep - enlistment->buf : offset);
383 if (chdir(parent.buf) < 0) {
384 int res = error_errno(_("could not switch to '%s'"), parent.buf);
385 strbuf_release(&parent);
386 return res;
387 }
388 strbuf_release(&parent);
389
390 if (have_fsmonitor_support() && stop_fsmonitor_daemon())
391 return error(_("failed to stop the FSMonitor daemon"));
392
393 if (remove_dir_recursively(enlistment, 0))
394 return error(_("failed to delete enlistment directory"));
395
396 return 0;
397 }
398
399 /*
400 * Dummy implementation; Using `get_version_info()` would cause a link error
401 * without this.
402 */
403 void load_builtin_commands(const char *prefix, struct cmdnames *cmds)
404 {
405 die("not implemented");
406 }
407
408 static int cmd_clone(int argc, const char **argv)
409 {
410 const char *branch = NULL;
411 int full_clone = 0, single_branch = 0, show_progress = isatty(2);
412 int src = 1;
413 struct option clone_options[] = {
414 OPT_STRING('b', "branch", &branch, N_("<branch>"),
415 N_("branch to checkout after clone")),
416 OPT_BOOL(0, "full-clone", &full_clone,
417 N_("when cloning, create full working directory")),
418 OPT_BOOL(0, "single-branch", &single_branch,
419 N_("only download metadata for the branch that will "
420 "be checked out")),
421 OPT_BOOL(0, "src", &src,
422 N_("create repository within 'src' directory")),
423 OPT_END(),
424 };
425 const char * const clone_usage[] = {
426 N_("scalar clone [--single-branch] [--branch <main-branch>] [--full-clone]\n"
427 "\t[--[no-]src] <url> [<enlistment>]"),
428 NULL
429 };
430 const char *url;
431 char *enlistment = NULL, *dir = NULL;
432 struct strbuf buf = STRBUF_INIT;
433 int res;
434
435 argc = parse_options(argc, argv, NULL, clone_options, clone_usage, 0);
436
437 if (argc == 2) {
438 url = argv[0];
439 enlistment = xstrdup(argv[1]);
440 } else if (argc == 1) {
441 url = argv[0];
442
443 strbuf_addstr(&buf, url);
444 /* Strip trailing slashes, if any */
445 while (buf.len > 0 && is_dir_sep(buf.buf[buf.len - 1]))
446 strbuf_setlen(&buf, buf.len - 1);
447 /* Strip suffix `.git`, if any */
448 strbuf_strip_suffix(&buf, ".git");
449
450 enlistment = find_last_dir_sep(buf.buf);
451 if (!enlistment) {
452 die(_("cannot deduce worktree name from '%s'"), url);
453 }
454 enlistment = xstrdup(enlistment + 1);
455 } else {
456 usage_msg_opt(_("You must specify a repository to clone."),
457 clone_usage, clone_options);
458 }
459
460 if (is_directory(enlistment))
461 die(_("directory '%s' exists already"), enlistment);
462
463 if (src)
464 dir = xstrfmt("%s/src", enlistment);
465 else
466 dir = xstrdup(enlistment);
467
468 strbuf_reset(&buf);
469 if (branch)
470 strbuf_addf(&buf, "init.defaultBranch=%s", branch);
471 else {
472 char *b = repo_default_branch_name(the_repository, 1);
473 strbuf_addf(&buf, "init.defaultBranch=%s", b);
474 free(b);
475 }
476
477 if ((res = run_git("-c", buf.buf, "init", "--", dir, NULL)))
478 goto cleanup;
479
480 if (chdir(dir) < 0) {
481 res = error_errno(_("could not switch to '%s'"), dir);
482 goto cleanup;
483 }
484
485 setup_git_directory();
486
487 /* common-main already logs `argv` */
488 trace2_def_repo(the_repository);
489
490 if (!branch && !(branch = remote_default_branch(url))) {
491 res = error(_("failed to get default branch for '%s'"), url);
492 goto cleanup;
493 }
494
495 if (set_config("remote.origin.url=%s", url) ||
496 set_config("remote.origin.fetch="
497 "+refs/heads/%s:refs/remotes/origin/%s",
498 single_branch ? branch : "*",
499 single_branch ? branch : "*") ||
500 set_config("remote.origin.promisor=true") ||
501 set_config("remote.origin.partialCloneFilter=blob:none")) {
502 res = error(_("could not configure remote in '%s'"), dir);
503 goto cleanup;
504 }
505
506 if (!full_clone &&
507 (res = run_git("sparse-checkout", "init", "--cone", NULL)))
508 goto cleanup;
509
510 if (set_recommended_config(0))
511 return error(_("could not configure '%s'"), dir);
512
513 if ((res = run_git("fetch", "--quiet",
514 show_progress ? "--progress" : "--no-progress",
515 "origin", NULL))) {
516 warning(_("partial clone failed; attempting full clone"));
517
518 if (set_config("remote.origin.promisor") ||
519 set_config("remote.origin.partialCloneFilter")) {
520 res = error(_("could not configure for full clone"));
521 goto cleanup;
522 }
523
524 if ((res = run_git("fetch", "--quiet",
525 show_progress ? "--progress" : "--no-progress",
526 "origin", NULL)))
527 goto cleanup;
528 }
529
530 if ((res = set_config("branch.%s.remote=origin", branch)))
531 goto cleanup;
532 if ((res = set_config("branch.%s.merge=refs/heads/%s",
533 branch, branch)))
534 goto cleanup;
535
536 strbuf_reset(&buf);
537 strbuf_addf(&buf, "origin/%s", branch);
538 res = run_git("checkout", "-f", "-t", buf.buf, NULL);
539 if (res)
540 goto cleanup;
541
542 res = register_dir();
543
544 cleanup:
545 free(enlistment);
546 free(dir);
547 strbuf_release(&buf);
548 return res;
549 }
550
551 static int cmd_diagnose(int argc, const char **argv)
552 {
553 struct option options[] = {
554 OPT_END(),
555 };
556 const char * const usage[] = {
557 N_("scalar diagnose [<enlistment>]"),
558 NULL
559 };
560 struct strbuf diagnostics_root = STRBUF_INIT;
561 int res = 0;
562
563 argc = parse_options(argc, argv, NULL, options,
564 usage, 0);
565
566 setup_enlistment_directory(argc, argv, usage, options, &diagnostics_root);
567 strbuf_addstr(&diagnostics_root, "/.scalarDiagnostics");
568
569 res = run_git("diagnose", "--mode=all", "-s", "%Y%m%d_%H%M%S",
570 "-o", diagnostics_root.buf, NULL);
571
572 strbuf_release(&diagnostics_root);
573 return res;
574 }
575
576 static int cmd_list(int argc, const char **argv UNUSED)
577 {
578 if (argc != 1)
579 die(_("`scalar list` does not take arguments"));
580
581 if (run_git("config", "--global", "--get-all", "scalar.repo", NULL) < 0)
582 return -1;
583 return 0;
584 }
585
586 static int cmd_register(int argc, const char **argv)
587 {
588 struct option options[] = {
589 OPT_END(),
590 };
591 const char * const usage[] = {
592 N_("scalar register [<enlistment>]"),
593 NULL
594 };
595
596 argc = parse_options(argc, argv, NULL, options,
597 usage, 0);
598
599 setup_enlistment_directory(argc, argv, usage, options, NULL);
600
601 return register_dir();
602 }
603
604 static int get_scalar_repos(const char *key, const char *value,
605 const struct config_context *ctx UNUSED,
606 void *data)
607 {
608 struct string_list *list = data;
609
610 if (!strcmp(key, "scalar.repo"))
611 string_list_append(list, value);
612
613 return 0;
614 }
615
616 static int remove_deleted_enlistment(struct strbuf *path)
617 {
618 int res = 0;
619 strbuf_realpath_forgiving(path, path->buf, 1);
620
621 if (run_git("config", "--global",
622 "--unset", "--fixed-value",
623 "scalar.repo", path->buf, NULL) < 0)
624 res = -1;
625
626 if (run_git("config", "--global",
627 "--unset", "--fixed-value",
628 "maintenance.repo", path->buf, NULL) < 0)
629 res = -1;
630
631 return res;
632 }
633
634 static int cmd_reconfigure(int argc, const char **argv)
635 {
636 int all = 0;
637 struct option options[] = {
638 OPT_BOOL('a', "all", &all,
639 N_("reconfigure all registered enlistments")),
640 OPT_END(),
641 };
642 const char * const usage[] = {
643 N_("scalar reconfigure [--all | <enlistment>]"),
644 NULL
645 };
646 struct string_list scalar_repos = STRING_LIST_INIT_DUP;
647 int i, res = 0;
648 struct strbuf commondir = STRBUF_INIT, gitdir = STRBUF_INIT;
649
650 argc = parse_options(argc, argv, NULL, options,
651 usage, 0);
652
653 if (!all) {
654 setup_enlistment_directory(argc, argv, usage, options, NULL);
655
656 return set_recommended_config(1);
657 }
658
659 if (argc > 0)
660 usage_msg_opt(_("--all or <enlistment>, but not both"),
661 usage, options);
662
663 git_config(get_scalar_repos, &scalar_repos);
664
665 for (i = 0; i < scalar_repos.nr; i++) {
666 int succeeded = 0;
667 struct repository *old_repo, r = { NULL };
668 const char *dir = scalar_repos.items[i].string;
669
670 strbuf_reset(&commondir);
671 strbuf_reset(&gitdir);
672
673 if (chdir(dir) < 0) {
674 struct strbuf buf = STRBUF_INIT;
675
676 if (errno != ENOENT) {
677 warning_errno(_("could not switch to '%s'"), dir);
678 goto loop_end;
679 }
680
681 strbuf_addstr(&buf, dir);
682 if (remove_deleted_enlistment(&buf))
683 error(_("could not remove stale "
684 "scalar.repo '%s'"), dir);
685 else {
686 warning(_("removed stale scalar.repo '%s'"),
687 dir);
688 succeeded = 1;
689 }
690 strbuf_release(&buf);
691 goto loop_end;
692 }
693
694 switch (discover_git_directory_reason(&commondir, &gitdir)) {
695 case GIT_DIR_INVALID_OWNERSHIP:
696 warning(_("repository at '%s' has different owner"), dir);
697 goto loop_end;
698
699 case GIT_DIR_INVALID_GITFILE:
700 case GIT_DIR_INVALID_FORMAT:
701 warning(_("repository at '%s' has a format issue"), dir);
702 goto loop_end;
703
704 case GIT_DIR_DISCOVERED:
705 succeeded = 1;
706 break;
707
708 default:
709 warning(_("repository not found in '%s'"), dir);
710 break;
711 }
712
713 git_config_clear();
714
715 if (repo_init(&r, gitdir.buf, commondir.buf))
716 goto loop_end;
717
718 old_repo = the_repository;
719 the_repository = &r;
720
721 if (set_recommended_config(1) >= 0)
722 succeeded = 1;
723
724 the_repository = old_repo;
725
726 loop_end:
727 if (!succeeded) {
728 res = -1;
729 warning(_("to unregister this repository from Scalar, run\n"
730 "\tgit config --global --unset --fixed-value scalar.repo \"%s\""),
731 dir);
732 }
733 }
734
735 string_list_clear(&scalar_repos, 1);
736 strbuf_release(&commondir);
737 strbuf_release(&gitdir);
738
739 return res;
740 }
741
742 static int cmd_run(int argc, const char **argv)
743 {
744 struct option options[] = {
745 OPT_END(),
746 };
747 struct {
748 const char *arg, *task;
749 } tasks[] = {
750 { "config", NULL },
751 { "commit-graph", "commit-graph" },
752 { "fetch", "prefetch" },
753 { "loose-objects", "loose-objects" },
754 { "pack-files", "incremental-repack" },
755 { NULL, NULL }
756 };
757 struct strbuf buf = STRBUF_INIT;
758 const char *usagestr[] = { NULL, NULL };
759 int i;
760
761 strbuf_addstr(&buf, N_("scalar run <task> [<enlistment>]\nTasks:\n"));
762 for (i = 0; tasks[i].arg; i++)
763 strbuf_addf(&buf, "\t%s\n", tasks[i].arg);
764 usagestr[0] = buf.buf;
765
766 argc = parse_options(argc, argv, NULL, options,
767 usagestr, 0);
768
769 if (!argc)
770 usage_with_options(usagestr, options);
771
772 if (!strcmp("all", argv[0])) {
773 i = -1;
774 } else {
775 for (i = 0; tasks[i].arg && strcmp(tasks[i].arg, argv[0]); i++)
776 ; /* keep looking for the task */
777
778 if (i > 0 && !tasks[i].arg) {
779 error(_("no such task: '%s'"), argv[0]);
780 usage_with_options(usagestr, options);
781 }
782 }
783
784 argc--;
785 argv++;
786 setup_enlistment_directory(argc, argv, usagestr, options, NULL);
787 strbuf_release(&buf);
788
789 if (i == 0)
790 return register_dir();
791
792 if (i > 0)
793 return run_git("maintenance", "run",
794 "--task", tasks[i].task, NULL);
795
796 if (register_dir())
797 return -1;
798 for (i = 1; tasks[i].arg; i++)
799 if (run_git("maintenance", "run",
800 "--task", tasks[i].task, NULL))
801 return -1;
802 return 0;
803 }
804
805 static int cmd_unregister(int argc, const char **argv)
806 {
807 struct option options[] = {
808 OPT_END(),
809 };
810 const char * const usage[] = {
811 N_("scalar unregister [<enlistment>]"),
812 NULL
813 };
814
815 argc = parse_options(argc, argv, NULL, options,
816 usage, 0);
817
818 /*
819 * Be forgiving when the enlistment or worktree does not even exist any
820 * longer; This can be the case if a user deleted the worktree by
821 * mistake and _still_ wants to unregister the thing.
822 */
823 if (argc == 1) {
824 struct strbuf src_path = STRBUF_INIT, workdir_path = STRBUF_INIT;
825
826 strbuf_addf(&src_path, "%s/src/.git", argv[0]);
827 strbuf_addf(&workdir_path, "%s/.git", argv[0]);
828 if (!is_directory(src_path.buf) && !is_directory(workdir_path.buf)) {
829 /* remove possible matching registrations */
830 int res = -1;
831
832 strbuf_strip_suffix(&src_path, "/.git");
833 res = remove_deleted_enlistment(&src_path) && res;
834
835 strbuf_strip_suffix(&workdir_path, "/.git");
836 res = remove_deleted_enlistment(&workdir_path) && res;
837
838 strbuf_release(&src_path);
839 strbuf_release(&workdir_path);
840 return res;
841 }
842 strbuf_release(&src_path);
843 strbuf_release(&workdir_path);
844 }
845
846 setup_enlistment_directory(argc, argv, usage, options, NULL);
847
848 return unregister_dir();
849 }
850
851 static int cmd_delete(int argc, const char **argv)
852 {
853 char *cwd = xgetcwd();
854 struct option options[] = {
855 OPT_END(),
856 };
857 const char * const usage[] = {
858 N_("scalar delete <enlistment>"),
859 NULL
860 };
861 struct strbuf enlistment = STRBUF_INIT;
862 int res = 0;
863
864 argc = parse_options(argc, argv, NULL, options,
865 usage, 0);
866
867 if (argc != 1)
868 usage_with_options(usage, options);
869
870 setup_enlistment_directory(argc, argv, usage, options, &enlistment);
871
872 if (dir_inside_of(cwd, enlistment.buf) >= 0)
873 res = error(_("refusing to delete current working directory"));
874 else {
875 close_object_store(the_repository->objects);
876 res = delete_enlistment(&enlistment);
877 }
878 strbuf_release(&enlistment);
879 free(cwd);
880
881 return res;
882 }
883
884 static int cmd_help(int argc, const char **argv)
885 {
886 struct option options[] = {
887 OPT_END(),
888 };
889 const char * const usage[] = {
890 "scalar help",
891 NULL
892 };
893
894 argc = parse_options(argc, argv, NULL, options,
895 usage, 0);
896
897 if (argc != 0)
898 usage_with_options(usage, options);
899
900 return run_git("help", "scalar", NULL);
901 }
902
903 static int cmd_version(int argc, const char **argv)
904 {
905 int verbose = 0, build_options = 0;
906 struct option options[] = {
907 OPT__VERBOSE(&verbose, N_("include Git version")),
908 OPT_BOOL(0, "build-options", &build_options,
909 N_("include Git's build options")),
910 OPT_END(),
911 };
912 const char * const usage[] = {
913 N_("scalar verbose [-v | --verbose] [--build-options]"),
914 NULL
915 };
916 struct strbuf buf = STRBUF_INIT;
917
918 argc = parse_options(argc, argv, NULL, options,
919 usage, 0);
920
921 if (argc != 0)
922 usage_with_options(usage, options);
923
924 get_version_info(&buf, build_options);
925 fprintf(stderr, "%s\n", buf.buf);
926 strbuf_release(&buf);
927
928 return 0;
929 }
930
931 static struct {
932 const char *name;
933 int (*fn)(int, const char **);
934 } builtins[] = {
935 { "clone", cmd_clone },
936 { "list", cmd_list },
937 { "register", cmd_register },
938 { "unregister", cmd_unregister },
939 { "run", cmd_run },
940 { "reconfigure", cmd_reconfigure },
941 { "delete", cmd_delete },
942 { "help", cmd_help },
943 { "version", cmd_version },
944 { "diagnose", cmd_diagnose },
945 { NULL, NULL},
946 };
947
948 int cmd_main(int argc, const char **argv)
949 {
950 struct strbuf scalar_usage = STRBUF_INIT;
951 int i;
952
953 while (argc > 1 && *argv[1] == '-') {
954 if (!strcmp(argv[1], "-C")) {
955 if (argc < 3)
956 die(_("-C requires a <directory>"));
957 if (chdir(argv[2]) < 0)
958 die_errno(_("could not change to '%s'"),
959 argv[2]);
960 argc -= 2;
961 argv += 2;
962 } else if (!strcmp(argv[1], "-c")) {
963 if (argc < 3)
964 die(_("-c requires a <key>=<value> argument"));
965 git_config_push_parameter(argv[2]);
966 argc -= 2;
967 argv += 2;
968 } else
969 break;
970 }
971
972 if (argc > 1) {
973 argv++;
974 argc--;
975
976 for (i = 0; builtins[i].name; i++)
977 if (!strcmp(builtins[i].name, argv[0]))
978 return !!builtins[i].fn(argc, argv);
979 }
980
981 strbuf_addstr(&scalar_usage,
982 N_("scalar [-C <directory>] [-c <key>=<value>] "
983 "<command> [<options>]\n\nCommands:\n"));
984 for (i = 0; builtins[i].name; i++)
985 strbuf_addf(&scalar_usage, "\t%s\n", builtins[i].name);
986
987 usage(scalar_usage.buf);
988 }
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