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Date:: Mon Dec 24 09:39:46 2018 UTC
Message:: show commit timestamps in diff headers
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1 /*
2  * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
3  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #include <sys/queue.h>
19 #include <sys/limits.h>
20 #include <sys/types.h>
21 #include <sys/stat.h>
22 
23 #include <err.h>
24 #include <errno.h>
25 #include <locale.h>
26 #include <signal.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <unistd.h>
31 #include <libgen.h>
32 #include <time.h>
33 
34 #include "got_error.h"
35 #include "got_object.h"
36 #include "got_reference.h"
37 #include "got_repository.h"
38 #include "got_worktree.h"
39 #include "got_diff.h"
40 #include "got_commit_graph.h"
41 #include "got_blame.h"
42 
43 #ifndef nitems
44 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
45 #endif
46 
47 static volatile sig_atomic_t sigint_received;
48 static volatile sig_atomic_t sigpipe_received;
49 
50 static void
51 catch_sigint(int signo)
52 {
53 	sigint_received = 1;
54 }
55 
56 static void
57 catch_sigpipe(int signo)
58 {
59 	sigpipe_received = 1;
60 }
61 
62 
63 struct cmd {
64 	const char	 *cmd_name;
65 	const struct got_error *(*cmd_main)(int, char *[]);
66 	void		(*cmd_usage)(void);
67 	const char	 *cmd_descr;
68 };
69 
70 __dead static void	usage(void);
71 __dead static void	usage_checkout(void);
72 __dead static void	usage_log(void);
73 __dead static void	usage_diff(void);
74 __dead static void	usage_blame(void);
75 __dead static void	usage_tree(void);
76 
77 static const struct got_error*		cmd_checkout(int, char *[]);
78 static const struct got_error*		cmd_log(int, char *[]);
79 static const struct got_error*		cmd_diff(int, char *[]);
80 static const struct got_error*		cmd_blame(int, char *[]);
81 static const struct got_error*		cmd_tree(int, char *[]);
82 #ifdef notyet
83 static const struct got_error*		cmd_status(int, char *[]);
84 #endif
85 
86 static struct cmd got_commands[] = {
87 	{ "checkout",	cmd_checkout,	usage_checkout,
88 	    "check out a new work tree from a repository" },
89 	{ "log",	cmd_log,	usage_log,
90 	    "show repository history" },
91 	{ "diff",	cmd_diff,	usage_diff,
92 	    "compare files and directories" },
93 	{ "blame",	cmd_blame,	usage_blame,
94 	    " show when lines in a file were changed" },
95 	{ "tree",	cmd_tree,	usage_tree,
96 	    " list files and directories in repository" },
97 #ifdef notyet
98 	{ "status",	cmd_status,	usage_status,
99 	    "show modification status of files" },
100 #endif
101 };
102 
103 int
104 main(int argc, char *argv[])
105 {
106 	struct cmd *cmd;
107 	unsigned int i;
108 	int ch;
109 	int hflag = 0;
110 
111 	setlocale(LC_ALL, "");
112 
113 	while ((ch = getopt(argc, argv, "h")) != -1) {
114 		switch (ch) {
115 		case 'h':
116 			hflag = 1;
117 			break;
118 		default:
119 			usage();
120 			/* NOTREACHED */
121 		}
122 	}
123 
124 	argc -= optind;
125 	argv += optind;
126 	optind = 0;
127 
128 	if (argc <= 0)
129 		usage();
130 
131 	signal(SIGINT, catch_sigint);
132 	signal(SIGPIPE, catch_sigpipe);
133 
134 	for (i = 0; i < nitems(got_commands); i++) {
135 		const struct got_error *error;
136 
137 		cmd = &got_commands[i];
138 
139 		if (strncmp(cmd->cmd_name, argv[0], strlen(argv[0])))
140 			continue;
141 
142 		if (hflag)
143 			got_commands[i].cmd_usage();
144 
145 		error = got_commands[i].cmd_main(argc, argv);
146 		if (error && !(sigint_received || sigpipe_received)) {
147 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
148 			return 1;
149 		}
150 
151 		return 0;
152 	}
153 
154 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
155 	return 1;
156 }
157 
158 __dead static void
159 usage(void)
160 {
161 	int i;
162 
163 	fprintf(stderr, "usage: %s [-h] command [arg ...]\n\n"
164 	    "Available commands:\n", getprogname());
165 	for (i = 0; i < nitems(got_commands); i++) {
166 		struct cmd *cmd = &got_commands[i];
167 		fprintf(stderr, "    %s: %s\n", cmd->cmd_name, cmd->cmd_descr);
168 	}
169 	exit(1);
170 }
171 
172 __dead static void
173 usage_checkout(void)
174 {
175 	fprintf(stderr, "usage: %s checkout [-p prefix] repository-path "
176 	    "[worktree-path]\n", getprogname());
177 	exit(1);
178 }
179 
180 static void
181 checkout_progress(void *arg, const char *path)
182 {
183 	char *worktree_path = arg;
184 
185 	while (path[0] == '/')
186 		path++;
187 
188 	printf("A  %s/%s\n", worktree_path, path);
189 }
190 
191 static const struct got_error *
192 checkout_cancel(void *arg)
193 {
194 	if (sigint_received || sigpipe_received)
195 		return got_error(GOT_ERR_CANCELLED);
196 	return NULL;
197 }
198 
199 static const struct got_error *
200 cmd_checkout(int argc, char *argv[])
201 {
202 	const struct got_error *error = NULL;
203 	struct got_repository *repo = NULL;
204 	struct got_reference *head_ref = NULL;
205 	struct got_worktree *worktree = NULL;
206 	char *repo_path = NULL;
207 	char *worktree_path = NULL;
208 	const char *path_prefix = "";
209 	int ch;
210 
211 	while ((ch = getopt(argc, argv, "p:")) != -1) {
212 		switch (ch) {
213 		case 'p':
214 			path_prefix = optarg;
215 			break;
216 		default:
217 			usage();
218 			/* NOTREACHED */
219 		}
220 	}
221 
222 	argc -= optind;
223 	argv += optind;
224 
225 #ifndef PROFILE
226 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd", NULL)
227 	    == -1)
228 		err(1, "pledge");
229 #endif
230 	if (argc == 1) {
231 		char *cwd, *base, *dotgit;
232 		repo_path = realpath(argv[0], NULL);
233 		if (repo_path == NULL)
234 			return got_error_from_errno();
235 		cwd = getcwd(NULL, 0);
236 		if (cwd == NULL) {
237 			error = got_error_from_errno();
238 			goto done;
239 		}
240 		if (path_prefix[0])
241 			base = basename(path_prefix);
242 		else
243 			base = basename(repo_path);
244 		if (base == NULL) {
245 			error = got_error_from_errno();
246 			goto done;
247 		}
248 		dotgit = strstr(base, ".git");
249 		if (dotgit)
250 			*dotgit = '\0';
251 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
252 			error = got_error_from_errno();
253 			free(cwd);
254 			goto done;
255 		}
256 		free(cwd);
257 	} else if (argc == 2) {
258 		repo_path = realpath(argv[0], NULL);
259 		if (repo_path == NULL) {
260 			error = got_error_from_errno();
261 			goto done;
262 		}
263 		worktree_path = realpath(argv[1], NULL);
264 		if (worktree_path == NULL) {
265 			error = got_error_from_errno();
266 			goto done;
267 		}
268 	} else
269 		usage_checkout();
270 
271 	error = got_repo_open(&repo, repo_path);
272 	if (error != NULL)
273 		goto done;
274 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
275 	if (error != NULL)
276 		goto done;
277 
278 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
279 	if (error != NULL)
280 		goto done;
281 
282 	error = got_worktree_open(&worktree, worktree_path);
283 	if (error != NULL)
284 		goto done;
285 
286 	error = got_worktree_checkout_files(worktree, head_ref, repo,
287 	    checkout_progress, worktree_path, checkout_cancel, NULL);
288 	if (error != NULL)
289 		goto done;
290 
291 	printf("Now shut up and hack\n");
292 
293 done:
294 	free(repo_path);
295 	free(worktree_path);
296 	return error;
297 }
298 
299 static const struct got_error *
300 print_patch(struct got_commit_object *commit, struct got_object_id *id,
301     int diff_context, struct got_repository *repo)
302 {
303 	const struct got_error *err = NULL;
304 	struct got_tree_object *tree1 = NULL, *tree2;
305 	struct got_object_qid *qid;
306 	char *id_str1 = NULL, *id_str2;
307 	time_t time1 = 0, time2;
308 
309 	time2 = got_object_commit_get_committer_time(commit);
310 
311 	err = got_object_open_as_tree(&tree2, repo,
312 	    got_object_commit_get_tree_id(commit));
313 	if (err)
314 		return err;
315 
316 	qid = SIMPLEQ_FIRST(got_object_commit_get_parent_ids(commit));
317 	if (qid != NULL) {
318 		struct got_commit_object *pcommit;
319 
320 		err = got_object_open_as_commit(&pcommit, repo, qid->id);
321 		if (err)
322 			return err;
323 
324 		time1 = got_object_commit_get_committer_time(pcommit);
325 		err = got_object_open_as_tree(&tree1, repo,
326 		    got_object_commit_get_tree_id(pcommit));
327 		got_object_commit_close(pcommit);
328 		if (err)
329 			return err;
330 
331 		err = got_object_id_str(&id_str1, qid->id);
332 		if (err)
333 			return err;
334 	}
335 
336 	err = got_object_id_str(&id_str2, id);
337 	if (err)
338 		goto done;
339 
340 	printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
341 	err = got_diff_tree(tree1, tree2, "", "", time1, time2, diff_context,
342 	    repo, stdout);
343 done:
344 	if (tree1)
345 		got_object_tree_close(tree1);
346 	got_object_tree_close(tree2);
347 	free(id_str1);
348 	free(id_str2);
349 	return err;
350 }
351 
352 static char *
353 get_datestr(time_t *time, char *datebuf)
354 {
355 	char *p, *s = ctime_r(time, datebuf);
356 	p = strchr(s, '\n');
357 	if (p)
358 		*p = '\0';
359 	return s;
360 }
361 
362 static const struct got_error *
363 print_commit(struct got_commit_object *commit, struct got_object_id *id,
364     struct got_repository *repo, int show_patch, int diff_context)
365 {
366 	const struct got_error *err = NULL;
367 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
368 	char datebuf[26];
369 	time_t committer_time;
370 	const char *author, *committer;
371 
372 	err = got_object_id_str(&id_str, id);
373 	if (err)
374 		return err;
375 
376 	printf("-----------------------------------------------\n");
377 	printf("commit %s\n", id_str);
378 	free(id_str);
379 	printf("from: %s\n", got_object_commit_get_author(commit));
380 	committer_time = got_object_commit_get_committer_time(commit);
381 	datestr = get_datestr(&committer_time, datebuf);
382 	printf("date: %s UTC\n", datestr);
383 	author = got_object_commit_get_author(commit);
384 	committer = got_object_commit_get_committer(commit);
385 	if (strcmp(author, committer) != 0)
386 		printf("via: %s\n", committer);
387 	if (got_object_commit_get_nparents(commit) > 1) {
388 		const struct got_object_id_queue *parent_ids;
389 		struct got_object_qid *qid;
390 		int n = 1;
391 		parent_ids = got_object_commit_get_parent_ids(commit);
392 		SIMPLEQ_FOREACH(qid, parent_ids, entry) {
393 			err = got_object_id_str(&id_str, qid->id);
394 			if (err)
395 				return err;
396 			printf("parent %d: %s\n", n++, id_str);
397 			free(id_str);
398 		}
399 	}
400 
401 	logmsg0 = strdup(got_object_commit_get_logmsg(commit));
402 	if (logmsg0 == NULL)
403 		return got_error_from_errno();
404 
405 	logmsg = logmsg0;
406 	do {
407 		line = strsep(&logmsg, "\n");
408 		if (line)
409 			printf(" %s\n", line);
410 	} while (line);
411 	free(logmsg0);
412 
413 	if (show_patch) {
414 		err = print_patch(commit, id, diff_context, repo);
415 		if (err == 0)
416 			printf("\n");
417 	}
418 
419 	fflush(stdout);
420 	return err;
421 }
422 
423 static const struct got_error *
424 print_commits(struct got_object_id *root_id, struct got_repository *repo,
425     char *path, int show_patch, int diff_context, int limit,
426     int first_parent_traversal)
427 {
428 	const struct got_error *err;
429 	struct got_commit_graph *graph;
430 
431 	err = got_commit_graph_open(&graph, root_id, path,
432 	    first_parent_traversal, repo);
433 	if (err)
434 		return err;
435 	err = got_commit_graph_iter_start(graph, root_id, repo);
436 	if (err)
437 		goto done;
438 	while (1) {
439 		struct got_commit_object *commit;
440 		struct got_object_id *id;
441 
442 		if (sigint_received || sigpipe_received)
443 			break;
444 
445 		err = got_commit_graph_iter_next(&id, graph);
446 		if (err) {
447 			if (err->code == GOT_ERR_ITER_COMPLETED) {
448 				err = NULL;
449 				break;
450 			}
451 			if (err->code != GOT_ERR_ITER_NEED_MORE)
452 				break;
453 			err = got_commit_graph_fetch_commits(graph, 1, repo);
454 			if (err)
455 				break;
456 			else
457 				continue;
458 		}
459 		if (id == NULL)
460 			break;
461 
462 		err = got_object_open_as_commit(&commit, repo, id);
463 		if (err)
464 			break;
465 		err = print_commit(commit, id, repo, show_patch, diff_context);
466 		got_object_commit_close(commit);
467 		if (err || (limit && --limit == 0))
468 			break;
469 	}
470 done:
471 	got_commit_graph_close(graph);
472 	return err;
473 }
474 
475 __dead static void
476 usage_log(void)
477 {
478 	fprintf(stderr, "usage: %s log [-c commit] [-C number] [-f] [ -l N ] [-p] "
479 	    "[-r repository-path] [path]\n", getprogname());
480 	exit(1);
481 }
482 
483 static const struct got_error *
484 cmd_log(int argc, char *argv[])
485 {
486 	const struct got_error *error;
487 	struct got_repository *repo = NULL;
488 	struct got_commit_object *commit = NULL;
489 	struct got_object_id *id = NULL;
490 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
491 	char *start_commit = NULL;
492 	int diff_context = 3, ch;
493 	int show_patch = 0, limit = 0, first_parent_traversal = 0;
494 	const char *errstr;
495 
496 #ifndef PROFILE
497 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd", NULL)
498 	    == -1)
499 		err(1, "pledge");
500 #endif
501 
502 	while ((ch = getopt(argc, argv, "pc:C:l:fr:")) != -1) {
503 		switch (ch) {
504 		case 'p':
505 			show_patch = 1;
506 			break;
507 		case 'c':
508 			start_commit = optarg;
509 			break;
510 		case 'C':
511 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
512 			    &errstr);
513 			if (errstr != NULL)
514 				err(1, "-C option %s", errstr);
515 			break;
516 		case 'l':
517 			limit = strtonum(optarg, 1, INT_MAX, &errstr);
518 			if (errstr != NULL)
519 				err(1, "-l option %s", errstr);
520 			break;
521 		case 'f':
522 			first_parent_traversal = 1;
523 			break;
524 		case 'r':
525 			repo_path = realpath(optarg, NULL);
526 			if (repo_path == NULL)
527 				err(1, "-r option");
528 			break;
529 		default:
530 			usage();
531 			/* NOTREACHED */
532 		}
533 	}
534 
535 	argc -= optind;
536 	argv += optind;
537 
538 	if (argc == 0)
539 		path = strdup("");
540 	else if (argc == 1)
541 		path = strdup(argv[0]);
542 	else
543 		usage_log();
544 	if (path == NULL)
545 		return got_error_from_errno();
546 
547 	cwd = getcwd(NULL, 0);
548 	if (cwd == NULL) {
549 		error = got_error_from_errno();
550 		goto done;
551 	}
552 	if (repo_path == NULL) {
553 		repo_path = strdup(cwd);
554 		if (repo_path == NULL) {
555 			error = got_error_from_errno();
556 			goto done;
557 		}
558 	}
559 
560 	error = got_repo_open(&repo, repo_path);
561 	if (error != NULL)
562 		goto done;
563 
564 	if (start_commit == NULL) {
565 		struct got_reference *head_ref;
566 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
567 		if (error != NULL)
568 			return error;
569 		error = got_ref_resolve(&id, repo, head_ref);
570 		got_ref_close(head_ref);
571 		if (error != NULL)
572 			return error;
573 		error = got_object_open_as_commit(&commit, repo, id);
574 	} else {
575 		struct got_reference *ref;
576 		error = got_ref_open(&ref, repo, start_commit);
577 		if (error == NULL) {
578 			error = got_ref_resolve(&id, repo, ref);
579 			got_ref_close(ref);
580 			if (error != NULL)
581 				return error;
582 			error = got_object_open_as_commit(&commit, repo, id);
583 			if (error != NULL)
584 				return error;
585 		}
586 		if (commit == NULL) {
587 			error = got_object_resolve_id_str(&id, repo,
588 			    start_commit);
589 			if (error != NULL)
590 				return error;
591 		}
592 	}
593 	if (error != NULL)
594 		goto done;
595 
596 	error = got_repo_map_path(&in_repo_path, repo, path, 1);
597 	if (error != NULL)
598 		goto done;
599 	if (in_repo_path) {
600 		free(path);
601 		path = in_repo_path;
602 	}
603 
604 	error = print_commits(id, repo, path, show_patch,
605 	    diff_context, limit, first_parent_traversal);
606 done:
607 	free(path);
608 	free(repo_path);
609 	free(cwd);
610 	free(id);
611 	if (repo) {
612 		const struct got_error *repo_error;
613 		repo_error = got_repo_close(repo);
614 		if (error == NULL)
615 			error = repo_error;
616 	}
617 	return error;
618 }
619 
620 __dead static void
621 usage_diff(void)
622 {
623 	fprintf(stderr, "usage: %s diff [-C number] [repository-path] "
624 	    "object1 object2\n", getprogname());
625 	exit(1);
626 }
627 
628 static const struct got_error *
629 cmd_diff(int argc, char *argv[])
630 {
631 	const struct got_error *error;
632 	struct got_repository *repo = NULL;
633 	char *repo_path = NULL;
634 	struct got_object_id *id1 = NULL, *id2 = NULL;
635 	char *id_str1 = NULL, *id_str2 = NULL;
636 	int type1, type2;
637 	int diff_context = 3, ch;
638 	const char *errstr;
639 
640 #ifndef PROFILE
641 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd", NULL)
642 	    == -1)
643 		err(1, "pledge");
644 #endif
645 
646 	while ((ch = getopt(argc, argv, "C:")) != -1) {
647 		switch (ch) {
648 		case 'C':
649 			diff_context = strtonum(optarg, 1, INT_MAX, &errstr);
650 			if (errstr != NULL)
651 				err(1, "-C option %s", errstr);
652 			break;
653 		default:
654 			usage();
655 			/* NOTREACHED */
656 		}
657 	}
658 
659 	argc -= optind;
660 	argv += optind;
661 
662 	if (argc == 0) {
663 		usage_diff(); /* TODO show local worktree changes */
664 	} else if (argc == 2) {
665 		repo_path = getcwd(NULL, 0);
666 		if (repo_path == NULL)
667 			return got_error_from_errno();
668 		id_str1 = argv[0];
669 		id_str2 = argv[1];
670 	} else if (argc == 3) {
671 		repo_path = realpath(argv[0], NULL);
672 		if (repo_path == NULL)
673 			return got_error_from_errno();
674 		id_str1 = argv[1];
675 		id_str2 = argv[2];
676 	} else
677 		usage_diff();
678 
679 	error = got_repo_open(&repo, repo_path);
680 	free(repo_path);
681 	if (error != NULL)
682 		goto done;
683 
684 	error = got_object_resolve_id_str(&id1, repo, id_str1);
685 	if (error)
686 		goto done;
687 
688 	error = got_object_resolve_id_str(&id2, repo, id_str2);
689 	if (error)
690 		goto done;
691 
692 	error = got_object_get_type(&type1, repo, id1);
693 	if (error)
694 		goto done;
695 
696 	error = got_object_get_type(&type2, repo, id2);
697 	if (error)
698 		goto done;
699 
700 	if (type1 != type2) {
701 		error = got_error(GOT_ERR_OBJ_TYPE);
702 		goto done;
703 	}
704 
705 	switch (type1) {
706 	case GOT_OBJ_TYPE_BLOB:
707 		error = got_diff_objects_as_blobs(id1, id2, NULL, NULL,
708 		    0, 0, diff_context, repo, stdout);
709 		break;
710 	case GOT_OBJ_TYPE_TREE:
711 		error = got_diff_objects_as_trees(id1, id2, "", "",
712 		    0, 0, diff_context, repo, stdout);
713 		break;
714 	case GOT_OBJ_TYPE_COMMIT:
715 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null",
716 		    id_str2);
717 		error = got_diff_objects_as_commits(id1, id2, diff_context,
718 		    repo, stdout);
719 		break;
720 	default:
721 		error = got_error(GOT_ERR_OBJ_TYPE);
722 	}
723 
724 done:
725 	free(id1);
726 	free(id2);
727 	if (repo) {
728 		const struct got_error *repo_error;
729 		repo_error = got_repo_close(repo);
730 		if (error == NULL)
731 			error = repo_error;
732 	}
733 	return error;
734 }
735 
736 __dead static void
737 usage_blame(void)
738 {
739 	fprintf(stderr, "usage: %s blame [-c commit] [-r repository-path] path\n",
740 	    getprogname());
741 	exit(1);
742 }
743 
744 static const struct got_error *
745 cmd_blame(int argc, char *argv[])
746 {
747 	const struct got_error *error;
748 	struct got_repository *repo = NULL;
749 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
750 	struct got_object_id *commit_id = NULL;
751 	char *commit_id_str = NULL;
752 	int ch;
753 
754 #ifndef PROFILE
755 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd", NULL)
756 	    == -1)
757 		err(1, "pledge");
758 #endif
759 
760 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
761 		switch (ch) {
762 		case 'c':
763 			commit_id_str = optarg;
764 			break;
765 		case 'r':
766 			repo_path = realpath(optarg, NULL);
767 			if (repo_path == NULL)
768 				err(1, "-r option");
769 			break;
770 		default:
771 			usage();
772 			/* NOTREACHED */
773 		}
774 	}
775 
776 	argc -= optind;
777 	argv += optind;
778 
779 	if (argc == 1)
780 		path = argv[0];
781 	else
782 		usage_blame();
783 
784 	cwd = getcwd(NULL, 0);
785 	if (cwd == NULL) {
786 		error = got_error_from_errno();
787 		goto done;
788 	}
789 	if (repo_path == NULL) {
790 		repo_path = strdup(cwd);
791 		if (repo_path == NULL) {
792 			error = got_error_from_errno();
793 			goto done;
794 		}
795 	}
796 
797 	error = got_repo_open(&repo, repo_path);
798 	if (error != NULL)
799 		goto done;
800 
801 	error = got_repo_map_path(&in_repo_path, repo, path, 1);
802 	if (error != NULL)
803 		goto done;
804 
805 	if (commit_id_str == NULL) {
806 		struct got_reference *head_ref;
807 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
808 		if (error != NULL)
809 			goto done;
810 		error = got_ref_resolve(&commit_id, repo, head_ref);
811 		got_ref_close(head_ref);
812 		if (error != NULL)
813 			goto done;
814 	} else {
815 		error = got_object_resolve_id_str(&commit_id, repo,
816 		    commit_id_str);
817 		if (error != NULL)
818 			goto done;
819 	}
820 
821 	error = got_blame(in_repo_path, commit_id, repo, stdout);
822 done:
823 	free(in_repo_path);
824 	free(repo_path);
825 	free(cwd);
826 	free(commit_id);
827 	if (repo) {
828 		const struct got_error *repo_error;
829 		repo_error = got_repo_close(repo);
830 		if (error == NULL)
831 			error = repo_error;
832 	}
833 	return error;
834 }
835 
836 __dead static void
837 usage_tree(void)
838 {
839 	fprintf(stderr, "usage: %s tree [-c commit] [-r repository-path] [-i] path\n",
840 	    getprogname());
841 	exit(1);
842 }
843 
844 
845 static const struct got_error *
846 print_tree(const char *path, struct got_object_id *commit_id,
847     int show_ids, struct got_repository *repo)
848 {
849 	const struct got_error *err = NULL;
850 	struct got_object_id *tree_id = NULL;
851 	struct got_tree_object *tree = NULL;
852 	const struct got_tree_entries *entries;
853 	struct got_tree_entry *te;
854 
855 	err = got_object_id_by_path(&tree_id, repo, commit_id, path);
856 	if (err)
857 		goto done;
858 
859 	err = got_object_open_as_tree(&tree, repo, tree_id);
860 	if (err)
861 		goto done;
862 	entries = got_object_tree_get_entries(tree);
863 	te = SIMPLEQ_FIRST(&entries->head);
864 	while (te) {
865 		char *id = NULL;
866 
867 		if (sigint_received || sigpipe_received)
868 			break;
869 
870 		if (show_ids) {
871 			char *id_str;
872 			err = got_object_id_str(&id_str, te->id);
873 			if (err)
874 				goto done;
875 			if (asprintf(&id, "%s ", id_str) == -1) {
876 				err = got_error_from_errno();
877 				free(id_str);
878 				goto done;
879 			}
880 			free(id_str);
881 		}
882 		printf("%s%s%s\n", id ? id : "",
883 		    te->name, S_ISDIR(te->mode) ? "/" : "");
884 		te = SIMPLEQ_NEXT(te, entry);
885 		free(id);
886 	}
887 done:
888 	if (tree)
889 		got_object_tree_close(tree);
890 	free(tree_id);
891 	return err;
892 }
893 
894 static const struct got_error *
895 cmd_tree(int argc, char *argv[])
896 {
897 	const struct got_error *error;
898 	struct got_repository *repo = NULL;
899 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
900 	struct got_object_id *commit_id = NULL;
901 	char *commit_id_str = NULL;
902 	int show_ids = 0;
903 	int ch;
904 
905 #ifndef PROFILE
906 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd", NULL)
907 	    == -1)
908 		err(1, "pledge");
909 #endif
910 
911 	while ((ch = getopt(argc, argv, "c:r:i")) != -1) {
912 		switch (ch) {
913 		case 'c':
914 			commit_id_str = optarg;
915 			break;
916 		case 'r':
917 			repo_path = realpath(optarg, NULL);
918 			if (repo_path == NULL)
919 				err(1, "-r option");
920 			break;
921 		case 'i':
922 			show_ids = 1;
923 			break;
924 		default:
925 			usage();
926 			/* NOTREACHED */
927 		}
928 	}
929 
930 	argc -= optind;
931 	argv += optind;
932 
933 	if (argc == 1)
934 		path = argv[0];
935 	else if (argc > 1)
936 		usage_tree();
937 	else
938 		path = "/";
939 
940 	cwd = getcwd(NULL, 0);
941 	if (cwd == NULL) {
942 		error = got_error_from_errno();
943 		goto done;
944 	}
945 	if (repo_path == NULL) {
946 		repo_path = strdup(cwd);
947 		if (repo_path == NULL) {
948 			error = got_error_from_errno();
949 			goto done;
950 		}
951 	}
952 
953 	error = got_repo_open(&repo, repo_path);
954 	if (error != NULL)
955 		goto done;
956 
957 	error = got_repo_map_path(&in_repo_path, repo, path, 1);
958 	if (error != NULL)
959 		goto done;
960 
961 	if (commit_id_str == NULL) {
962 		struct got_reference *head_ref;
963 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
964 		if (error != NULL)
965 			goto done;
966 		error = got_ref_resolve(&commit_id, repo, head_ref);
967 		got_ref_close(head_ref);
968 		if (error != NULL)
969 			goto done;
970 	} else {
971 		error = got_object_resolve_id_str(&commit_id, repo,
972 		    commit_id_str);
973 		if (error != NULL)
974 			goto done;
975 	}
976 
977 	error = print_tree(in_repo_path, commit_id, show_ids, repo);
978 done:
979 	free(in_repo_path);
980 	free(repo_path);
981 	free(cwd);
982 	free(commit_id);
983 	if (repo) {
984 		const struct got_error *repo_error;
985 		repo_error = got_repo_close(repo);
986 		if (error == NULL)
987 			error = repo_error;
988 	}
989 	return error;
990 }
991 
992 #ifdef notyet
993 static const struct got_error *
994 cmd_status(int argc __unused, char *argv[] __unused)
995 {
996 	git_repository *repo = NULL;
997 	git_status_list *status;
998 	git_status_options statusopts;
999 	size_t i;
1000 
1001 	git_libgit2_init();
1002 
1003 	if (git_repository_open_ext(&repo, ".", 0, NULL))
1004 		errx(1, "git_repository_open: %s", giterr_last()->message);
1005 
1006 	if (git_repository_is_bare(repo))
1007 		errx(1, "bar repository");
1008 
1009 	if (git_status_init_options(&statusopts, GIT_STATUS_OPTIONS_VERSION))
1010 		errx(1, "git_status_init_options: %s", giterr_last()->message);
1011 
1012 	statusopts.show  = GIT_STATUS_SHOW_INDEX_AND_WORKDIR;
1013 	statusopts.flags = GIT_STATUS_OPT_INCLUDE_UNTRACKED |
1014 	    GIT_STATUS_OPT_RENAMES_HEAD_TO_INDEX |
1015 	    GIT_STATUS_OPT_SORT_CASE_SENSITIVELY;
1016 
1017 	if (git_status_list_new(&status, repo, &statusopts))
1018 		errx(1, "git_status_list_new: %s", giterr_last()->message);
1019 
1020 	for (i = 0; i < git_status_list_entrycount(status); i++) {
1021 		const git_status_entry *se;
1022 
1023 		se = git_status_byindex(status, i);
1024 		switch (se->status) {
1025 		case GIT_STATUS_WT_NEW:
1026 			printf("? %s\n", se->index_to_workdir->new_file.path);
1027 			break;
1028 		case GIT_STATUS_WT_MODIFIED:
1029 			printf("M %s\n", se->index_to_workdir->new_file.path);
1030 			break;
1031 		case GIT_STATUS_WT_DELETED:
1032 			printf("R %s\n", se->index_to_workdir->new_file.path);
1033 			break;
1034 		case GIT_STATUS_WT_RENAMED:
1035 			printf("m %s -> %s\n",
1036 			    se->index_to_workdir->old_file.path,
1037 			    se->index_to_workdir->new_file.path);
1038 			break;
1039 		case GIT_STATUS_WT_TYPECHANGE:
1040 			printf("t %s\n", se->index_to_workdir->new_file.path);
1041 			break;
1042 		case GIT_STATUS_INDEX_NEW:
1043 			printf("A %s\n", se->head_to_index->new_file.path);
1044 			break;
1045 		case GIT_STATUS_INDEX_MODIFIED:
1046 			printf("M %s\n", se->head_to_index->old_file.path);
1047 			break;
1048 		case GIT_STATUS_INDEX_DELETED:
1049 			printf("R %s\n", se->head_to_index->old_file.path);
1050 			break;
1051 		case GIT_STATUS_INDEX_RENAMED:
1052 			printf("m %s -> %s\n",
1053 			    se->head_to_index->old_file.path,
1054 			    se->head_to_index->new_file.path);
1055 			break;
1056 		case GIT_STATUS_INDEX_TYPECHANGE:
1057 			printf("t %s\n", se->head_to_index->old_file.path);
1058 			break;
1059 		case GIT_STATUS_CURRENT:
1060 		default:
1061 			break;
1062 		}
1063 	}
1064 
1065 	git_status_list_free(status);
1066 	git_repository_free(repo);
1067 	git_libgit2_shutdown();
1068 
1069 	return 0;
1070 }
1071 #endif