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Date:: Sat Dec 22 11:57:39 2018 UTC
Message:: show diffed commit IDs in 'got log -p' output
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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 
308 	err = got_object_open_as_tree(&tree2, repo, commit->tree_id);
309 	if (err)
310 		return err;
311 
312 	qid = SIMPLEQ_FIRST(&commit->parent_ids);
313 	if (qid != NULL) {
314 		struct got_commit_object *pcommit;
315 
316 		err = got_object_open_as_commit(&pcommit, repo, qid->id);
317 		if (err)
318 			return err;
319 
320 		err = got_object_open_as_tree(&tree1, repo, pcommit->tree_id);
321 		got_object_commit_close(pcommit);
322 		if (err)
323 			return err;
324 
325 		err = got_object_id_str(&id_str1, qid->id);
326 		if (err)
327 			return err;
328 	}
329 
330 	err = got_object_id_str(&id_str2, id);
331 	if (err)
332 		goto done;
333 
334 	printf("diff: %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
335 	err = got_diff_tree(tree1, tree2, "", "", diff_context, repo, stdout);
336 done:
337 	if (tree1)
338 		got_object_tree_close(tree1);
339 	got_object_tree_close(tree2);
340 	free(id_str1);
341 	free(id_str2);
342 	return err;
343 }
344 
345 static char *
346 get_datestr(time_t *time, char *datebuf)
347 {
348 	char *p, *s = ctime_r(time, datebuf);
349 	p = strchr(s, '\n');
350 	if (p)
351 		*p = '\0';
352 	return s;
353 }
354 
355 static const struct got_error *
356 print_commit(struct got_commit_object *commit, struct got_object_id *id,
357     struct got_repository *repo, int show_patch, int diff_context)
358 {
359 	const struct got_error *err = NULL;
360 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
361 	char datebuf[26];
362 
363 	err = got_object_id_str(&id_str, id);
364 	if (err)
365 		return err;
366 
367 	printf("-----------------------------------------------\n");
368 	printf("commit %s\n", id_str);
369 	free(id_str);
370 	printf("from: %s\n", commit->author);
371 	datestr = get_datestr(&commit->committer_time, datebuf);
372 	printf("date: %s UTC\n", datestr);
373 	if (strcmp(commit->author, commit->committer) != 0)
374 		printf("via: %s\n", commit->committer);
375 	if (commit->nparents > 1) {
376 		struct got_object_qid *qid;
377 		int n = 1;
378 		SIMPLEQ_FOREACH(qid, &commit->parent_ids, entry) {
379 			err = got_object_id_str(&id_str, qid->id);
380 			if (err)
381 				return err;
382 			printf("parent %d: %s\n", n++, id_str);
383 			free(id_str);
384 		}
385 	}
386 
387 	logmsg0 = strdup(commit->logmsg);
388 	if (logmsg0 == NULL)
389 		return got_error_from_errno();
390 
391 	logmsg = logmsg0;
392 	do {
393 		line = strsep(&logmsg, "\n");
394 		if (line)
395 			printf(" %s\n", line);
396 	} while (line);
397 	free(logmsg0);
398 
399 	if (show_patch) {
400 		err = print_patch(commit, id, diff_context, repo);
401 		if (err == 0)
402 			printf("\n");
403 	}
404 
405 	fflush(stdout);
406 	return err;
407 }
408 
409 static const struct got_error *
410 print_commits(struct got_object *root_obj, struct got_object_id *root_id,
411     struct got_repository *repo, char *path, int show_patch, int diff_context,
412     int limit, int first_parent_traversal)
413 {
414 	const struct got_error *err;
415 	struct got_commit_graph *graph;
416 
417 	err = got_commit_graph_open(&graph, root_id, path,
418 	    first_parent_traversal, repo);
419 	if (err)
420 		return err;
421 	err = got_commit_graph_iter_start(graph, root_id, repo);
422 	if (err)
423 		goto done;
424 	while (1) {
425 		struct got_commit_object *commit;
426 		struct got_object_id *id;
427 
428 		if (sigint_received || sigpipe_received)
429 			break;
430 
431 		err = got_commit_graph_iter_next(&id, graph);
432 		if (err) {
433 			if (err->code == GOT_ERR_ITER_COMPLETED) {
434 				err = NULL;
435 				break;
436 			}
437 			if (err->code != GOT_ERR_ITER_NEED_MORE)
438 				break;
439 			err = got_commit_graph_fetch_commits(graph, 1, repo);
440 			if (err)
441 				break;
442 			else
443 				continue;
444 		}
445 		if (id == NULL)
446 			break;
447 
448 		err = got_object_open_as_commit(&commit, repo, id);
449 		if (err)
450 			break;
451 		err = print_commit(commit, id, repo, show_patch, diff_context);
452 		got_object_commit_close(commit);
453 		if (err || (limit && --limit == 0))
454 			break;
455 	}
456 done:
457 	got_commit_graph_close(graph);
458 	return err;
459 }
460 
461 __dead static void
462 usage_log(void)
463 {
464 	fprintf(stderr, "usage: %s log [-c commit] [-C number] [-f] [ -l N ] [-p] "
465 	    "[-r repository-path] [path]\n", getprogname());
466 	exit(1);
467 }
468 
469 static const struct got_error *
470 cmd_log(int argc, char *argv[])
471 {
472 	const struct got_error *error;
473 	struct got_repository *repo = NULL;
474 	struct got_object_id *id = NULL;
475 	struct got_object *obj = NULL;
476 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
477 	char *start_commit = NULL;
478 	int diff_context = 3, ch;
479 	int show_patch = 0, limit = 0, first_parent_traversal = 0;
480 	const char *errstr;
481 
482 #ifndef PROFILE
483 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd", NULL)
484 	    == -1)
485 		err(1, "pledge");
486 #endif
487 
488 	while ((ch = getopt(argc, argv, "pc:C:l:fr:")) != -1) {
489 		switch (ch) {
490 		case 'p':
491 			show_patch = 1;
492 			break;
493 		case 'c':
494 			start_commit = optarg;
495 			break;
496 		case 'C':
497 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
498 			    &errstr);
499 			if (errstr != NULL)
500 				err(1, "-C option %s", errstr);
501 			break;
502 		case 'l':
503 			limit = strtonum(optarg, 1, INT_MAX, &errstr);
504 			if (errstr != NULL)
505 				err(1, "-l option %s", errstr);
506 			break;
507 		case 'f':
508 			first_parent_traversal = 1;
509 			break;
510 		case 'r':
511 			repo_path = realpath(optarg, NULL);
512 			if (repo_path == NULL)
513 				err(1, "-r option");
514 			break;
515 		default:
516 			usage();
517 			/* NOTREACHED */
518 		}
519 	}
520 
521 	argc -= optind;
522 	argv += optind;
523 
524 	if (argc == 0)
525 		path = strdup("");
526 	else if (argc == 1)
527 		path = strdup(argv[0]);
528 	else
529 		usage_log();
530 	if (path == NULL)
531 		return got_error_from_errno();
532 
533 	cwd = getcwd(NULL, 0);
534 	if (cwd == NULL) {
535 		error = got_error_from_errno();
536 		goto done;
537 	}
538 	if (repo_path == NULL) {
539 		repo_path = strdup(cwd);
540 		if (repo_path == NULL) {
541 			error = got_error_from_errno();
542 			goto done;
543 		}
544 	}
545 
546 	error = got_repo_open(&repo, repo_path);
547 	if (error != NULL)
548 		goto done;
549 
550 	if (start_commit == NULL) {
551 		struct got_reference *head_ref;
552 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
553 		if (error != NULL)
554 			return error;
555 		error = got_ref_resolve(&id, repo, head_ref);
556 		got_ref_close(head_ref);
557 		if (error != NULL)
558 			return error;
559 		error = got_object_open(&obj, repo, id);
560 	} else {
561 		struct got_reference *ref;
562 		error = got_ref_open(&ref, repo, start_commit);
563 		if (error == NULL) {
564 			error = got_ref_resolve(&id, repo, ref);
565 			got_ref_close(ref);
566 			if (error != NULL)
567 				return error;
568 			error = got_object_open(&obj, repo, id);
569 			if (error != NULL)
570 				return error;
571 		}
572 		if (obj == NULL) {
573 			error = got_object_open_by_id_str(&obj, repo,
574 			    start_commit);
575 			if (error != NULL)
576 				return error;
577 			id = got_object_id_dup(got_object_get_id(obj));
578 			if (id == NULL)
579 				error = got_error_from_errno();
580 		}
581 	}
582 	if (error != NULL)
583 		goto done;
584 	if (got_object_get_type(obj) != GOT_OBJ_TYPE_COMMIT) {
585 		error = got_error(GOT_ERR_OBJ_TYPE);
586 		goto done;
587 	}
588 
589 	error = got_repo_map_path(&in_repo_path, repo, path, 1);
590 	if (error != NULL)
591 		goto done;
592 	if (in_repo_path) {
593 		free(path);
594 		path = in_repo_path;
595 	}
596 
597 	error = print_commits(obj, id, repo, path, show_patch,
598 	    diff_context, limit, first_parent_traversal);
599 done:
600 	free(path);
601 	free(repo_path);
602 	free(cwd);
603 	if (obj)
604 		got_object_close(obj);
605 	free(id);
606 	if (repo) {
607 		const struct got_error *repo_error;
608 		repo_error = got_repo_close(repo);
609 		if (error == NULL)
610 			error = repo_error;
611 	}
612 	return error;
613 }
614 
615 __dead static void
616 usage_diff(void)
617 {
618 	fprintf(stderr, "usage: %s diff [-C number] [repository-path] "
619 	    "object1 object2\n", getprogname());
620 	exit(1);
621 }
622 
623 static const struct got_error *
624 cmd_diff(int argc, char *argv[])
625 {
626 	const struct got_error *error;
627 	struct got_repository *repo = NULL;
628 	struct got_object *obj1 = NULL, *obj2 = NULL;
629 	char *repo_path = NULL;
630 	char *obj_id_str1 = NULL, *obj_id_str2 = NULL;
631 	int diff_context = 3, ch;
632 	const char *errstr;
633 
634 #ifndef PROFILE
635 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd", NULL)
636 	    == -1)
637 		err(1, "pledge");
638 #endif
639 
640 	while ((ch = getopt(argc, argv, "C:")) != -1) {
641 		switch (ch) {
642 		case 'C':
643 			diff_context = strtonum(optarg, 1, INT_MAX, &errstr);
644 			if (errstr != NULL)
645 				err(1, "-C option %s", errstr);
646 			break;
647 		default:
648 			usage();
649 			/* NOTREACHED */
650 		}
651 	}
652 
653 	argc -= optind;
654 	argv += optind;
655 
656 	if (argc == 0) {
657 		usage_diff(); /* TODO show local worktree changes */
658 	} else if (argc == 2) {
659 		repo_path = getcwd(NULL, 0);
660 		if (repo_path == NULL)
661 			return got_error_from_errno();
662 		obj_id_str1 = argv[0];
663 		obj_id_str2 = argv[1];
664 	} else if (argc == 3) {
665 		repo_path = realpath(argv[0], NULL);
666 		if (repo_path == NULL)
667 			return got_error_from_errno();
668 		obj_id_str1 = argv[1];
669 		obj_id_str2 = argv[2];
670 	} else
671 		usage_diff();
672 
673 	error = got_repo_open(&repo, repo_path);
674 	free(repo_path);
675 	if (error != NULL)
676 		goto done;
677 
678 	error = got_object_open_by_id_str(&obj1, repo, obj_id_str1);
679 	if (error)
680 		goto done;
681 
682 	error = got_object_open_by_id_str(&obj2, repo, obj_id_str2);
683 	if (error)
684 		goto done;
685 
686 	if (got_object_get_type(obj1) != got_object_get_type(obj2)) {
687 		error = got_error(GOT_ERR_OBJ_TYPE);
688 		goto done;
689 	}
690 
691 	switch (got_object_get_type(obj1)) {
692 	case GOT_OBJ_TYPE_BLOB:
693 		error = got_diff_objects_as_blobs(obj1, obj2, NULL, NULL,
694 		    diff_context, repo, stdout);
695 		break;
696 	case GOT_OBJ_TYPE_TREE:
697 		error = got_diff_objects_as_trees(obj1, obj2, "", "",
698 		    diff_context, repo, stdout);
699 		break;
700 	case GOT_OBJ_TYPE_COMMIT:
701 		printf("diff: %s %s\n", obj_id_str1 ? obj_id_str1 : "/dev/null",
702 		    obj_id_str2);
703 		error = got_diff_objects_as_commits(obj1, obj2, diff_context,
704 		    repo, stdout);
705 		break;
706 	default:
707 		error = got_error(GOT_ERR_OBJ_TYPE);
708 	}
709 
710 done:
711 	if (obj1)
712 		got_object_close(obj1);
713 	if (obj2)
714 		got_object_close(obj2);
715 	if (repo) {
716 		const struct got_error *repo_error;
717 		repo_error = got_repo_close(repo);
718 		if (error == NULL)
719 			error = repo_error;
720 	}
721 	return error;
722 }
723 
724 __dead static void
725 usage_blame(void)
726 {
727 	fprintf(stderr, "usage: %s blame [-c commit] [-r repository-path] path\n",
728 	    getprogname());
729 	exit(1);
730 }
731 
732 static const struct got_error *
733 cmd_blame(int argc, char *argv[])
734 {
735 	const struct got_error *error;
736 	struct got_repository *repo = NULL;
737 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
738 	struct got_object_id *commit_id = NULL;
739 	char *commit_id_str = NULL;
740 	int ch;
741 
742 #ifndef PROFILE
743 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd", NULL)
744 	    == -1)
745 		err(1, "pledge");
746 #endif
747 
748 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
749 		switch (ch) {
750 		case 'c':
751 			commit_id_str = optarg;
752 			break;
753 		case 'r':
754 			repo_path = realpath(optarg, NULL);
755 			if (repo_path == NULL)
756 				err(1, "-r option");
757 			break;
758 		default:
759 			usage();
760 			/* NOTREACHED */
761 		}
762 	}
763 
764 	argc -= optind;
765 	argv += optind;
766 
767 	if (argc == 1)
768 		path = argv[0];
769 	else
770 		usage_blame();
771 
772 	cwd = getcwd(NULL, 0);
773 	if (cwd == NULL) {
774 		error = got_error_from_errno();
775 		goto done;
776 	}
777 	if (repo_path == NULL) {
778 		repo_path = strdup(cwd);
779 		if (repo_path == NULL) {
780 			error = got_error_from_errno();
781 			goto done;
782 		}
783 	}
784 
785 	error = got_repo_open(&repo, repo_path);
786 	if (error != NULL)
787 		goto done;
788 
789 	error = got_repo_map_path(&in_repo_path, repo, path, 1);
790 	if (error != NULL)
791 		goto done;
792 
793 	if (commit_id_str == NULL) {
794 		struct got_reference *head_ref;
795 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
796 		if (error != NULL)
797 			goto done;
798 		error = got_ref_resolve(&commit_id, repo, head_ref);
799 		got_ref_close(head_ref);
800 		if (error != NULL)
801 			goto done;
802 	} else {
803 		struct got_object *obj;
804 		error = got_object_open_by_id_str(&obj, repo, commit_id_str);
805 		if (error != NULL)
806 			goto done;
807 		commit_id = got_object_id_dup(got_object_get_id(obj));
808 		if (commit_id == NULL)
809 			error = got_error_from_errno();
810 		got_object_close(obj);
811 	}
812 
813 	error = got_blame(in_repo_path, commit_id, repo, stdout);
814 done:
815 	free(in_repo_path);
816 	free(repo_path);
817 	free(cwd);
818 	free(commit_id);
819 	if (repo) {
820 		const struct got_error *repo_error;
821 		repo_error = got_repo_close(repo);
822 		if (error == NULL)
823 			error = repo_error;
824 	}
825 	return error;
826 }
827 
828 __dead static void
829 usage_tree(void)
830 {
831 	fprintf(stderr, "usage: %s tree [-c commit] [-r repository-path] [-i] path\n",
832 	    getprogname());
833 	exit(1);
834 }
835 
836 
837 static const struct got_error *
838 print_tree(const char *path, struct got_object_id *commit_id,
839     int show_ids, struct got_repository *repo)
840 {
841 	const struct got_error *err = NULL;
842 	struct got_object_id *tree_id = NULL;
843 	struct got_tree_object *tree = NULL;
844 	const struct got_tree_entries *entries;
845 	struct got_tree_entry *te;
846 
847 	err = got_object_id_by_path(&tree_id, repo, commit_id, path);
848 	if (err)
849 		goto done;
850 
851 	err = got_object_open_as_tree(&tree, repo, tree_id);
852 	if (err)
853 		goto done;
854 	entries = got_object_tree_get_entries(tree);
855 	te = SIMPLEQ_FIRST(&entries->head);
856 	while (te) {
857 		char *id = NULL;
858 
859 		if (sigint_received || sigpipe_received)
860 			break;
861 
862 		if (show_ids) {
863 			char *id_str;
864 			err = got_object_id_str(&id_str, te->id);
865 			if (err)
866 				goto done;
867 			if (asprintf(&id, "%s ", id_str) == -1) {
868 				err = got_error_from_errno();
869 				free(id_str);
870 				goto done;
871 			}
872 			free(id_str);
873 		}
874 		printf("%s%s%s\n", id ? id : "",
875 		    te->name, S_ISDIR(te->mode) ? "/" : "");
876 		te = SIMPLEQ_NEXT(te, entry);
877 		free(id);
878 	}
879 done:
880 	if (tree)
881 		got_object_tree_close(tree);
882 	free(tree_id);
883 	return err;
884 }
885 
886 static const struct got_error *
887 cmd_tree(int argc, char *argv[])
888 {
889 	const struct got_error *error;
890 	struct got_repository *repo = NULL;
891 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
892 	struct got_object_id *commit_id = NULL;
893 	char *commit_id_str = NULL;
894 	int show_ids = 0;
895 	int ch;
896 
897 #ifndef PROFILE
898 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd", NULL)
899 	    == -1)
900 		err(1, "pledge");
901 #endif
902 
903 	while ((ch = getopt(argc, argv, "c:r:i")) != -1) {
904 		switch (ch) {
905 		case 'c':
906 			commit_id_str = optarg;
907 			break;
908 		case 'r':
909 			repo_path = realpath(optarg, NULL);
910 			if (repo_path == NULL)
911 				err(1, "-r option");
912 			break;
913 		case 'i':
914 			show_ids = 1;
915 			break;
916 		default:
917 			usage();
918 			/* NOTREACHED */
919 		}
920 	}
921 
922 	argc -= optind;
923 	argv += optind;
924 
925 	if (argc == 1)
926 		path = argv[0];
927 	else if (argc > 1)
928 		usage_tree();
929 	else
930 		path = "/";
931 
932 	cwd = getcwd(NULL, 0);
933 	if (cwd == NULL) {
934 		error = got_error_from_errno();
935 		goto done;
936 	}
937 	if (repo_path == NULL) {
938 		repo_path = strdup(cwd);
939 		if (repo_path == NULL) {
940 			error = got_error_from_errno();
941 			goto done;
942 		}
943 	}
944 
945 	error = got_repo_open(&repo, repo_path);
946 	if (error != NULL)
947 		goto done;
948 
949 	error = got_repo_map_path(&in_repo_path, repo, path, 1);
950 	if (error != NULL)
951 		goto done;
952 
953 	if (commit_id_str == NULL) {
954 		struct got_reference *head_ref;
955 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
956 		if (error != NULL)
957 			goto done;
958 		error = got_ref_resolve(&commit_id, repo, head_ref);
959 		got_ref_close(head_ref);
960 		if (error != NULL)
961 			goto done;
962 	} else {
963 		struct got_object *obj;
964 		error = got_object_open_by_id_str(&obj, repo, commit_id_str);
965 		if (error != NULL)
966 			goto done;
967 		commit_id = got_object_id_dup(got_object_get_id(obj));
968 		if (commit_id == NULL)
969 			error = got_error_from_errno();
970 		got_object_close(obj);
971 	}
972 
973 	error = print_tree(in_repo_path, commit_id, show_ids, repo);
974 done:
975 	free(in_repo_path);
976 	free(repo_path);
977 	free(cwd);
978 	free(commit_id);
979 	if (repo) {
980 		const struct got_error *repo_error;
981 		repo_error = got_repo_close(repo);
982 		if (error == NULL)
983 			error = repo_error;
984 	}
985 	return error;
986 }
987 
988 #ifdef notyet
989 static const struct got_error *
990 cmd_status(int argc __unused, char *argv[] __unused)
991 {
992 	git_repository *repo = NULL;
993 	git_status_list *status;
994 	git_status_options statusopts;
995 	size_t i;
996 
997 	git_libgit2_init();
998 
999 	if (git_repository_open_ext(&repo, ".", 0, NULL))
1000 		errx(1, "git_repository_open: %s", giterr_last()->message);
1001 
1002 	if (git_repository_is_bare(repo))
1003 		errx(1, "bar repository");
1004 
1005 	if (git_status_init_options(&statusopts, GIT_STATUS_OPTIONS_VERSION))
1006 		errx(1, "git_status_init_options: %s", giterr_last()->message);
1007 
1008 	statusopts.show  = GIT_STATUS_SHOW_INDEX_AND_WORKDIR;
1009 	statusopts.flags = GIT_STATUS_OPT_INCLUDE_UNTRACKED |
1010 	    GIT_STATUS_OPT_RENAMES_HEAD_TO_INDEX |
1011 	    GIT_STATUS_OPT_SORT_CASE_SENSITIVELY;
1012 
1013 	if (git_status_list_new(&status, repo, &statusopts))
1014 		errx(1, "git_status_list_new: %s", giterr_last()->message);
1015 
1016 	for (i = 0; i < git_status_list_entrycount(status); i++) {
1017 		const git_status_entry *se;
1018 
1019 		se = git_status_byindex(status, i);
1020 		switch (se->status) {
1021 		case GIT_STATUS_WT_NEW:
1022 			printf("? %s\n", se->index_to_workdir->new_file.path);
1023 			break;
1024 		case GIT_STATUS_WT_MODIFIED:
1025 			printf("M %s\n", se->index_to_workdir->new_file.path);
1026 			break;
1027 		case GIT_STATUS_WT_DELETED:
1028 			printf("R %s\n", se->index_to_workdir->new_file.path);
1029 			break;
1030 		case GIT_STATUS_WT_RENAMED:
1031 			printf("m %s -> %s\n",
1032 			    se->index_to_workdir->old_file.path,
1033 			    se->index_to_workdir->new_file.path);
1034 			break;
1035 		case GIT_STATUS_WT_TYPECHANGE:
1036 			printf("t %s\n", se->index_to_workdir->new_file.path);
1037 			break;
1038 		case GIT_STATUS_INDEX_NEW:
1039 			printf("A %s\n", se->head_to_index->new_file.path);
1040 			break;
1041 		case GIT_STATUS_INDEX_MODIFIED:
1042 			printf("M %s\n", se->head_to_index->old_file.path);
1043 			break;
1044 		case GIT_STATUS_INDEX_DELETED:
1045 			printf("R %s\n", se->head_to_index->old_file.path);
1046 			break;
1047 		case GIT_STATUS_INDEX_RENAMED:
1048 			printf("m %s -> %s\n",
1049 			    se->head_to_index->old_file.path,
1050 			    se->head_to_index->new_file.path);
1051 			break;
1052 		case GIT_STATUS_INDEX_TYPECHANGE:
1053 			printf("t %s\n", se->head_to_index->old_file.path);
1054 			break;
1055 		case GIT_STATUS_CURRENT:
1056 		default:
1057 			break;
1058 		}
1059 	}
1060 
1061 	git_status_list_free(status);
1062 	git_repository_free(repo);
1063 	git_libgit2_shutdown();
1064 
1065 	return 0;
1066 }
1067 #endif