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Date:: Thu Aug 2 09:06:34 2018 UTC
Message:: knf
Actions:: History | Blame | Raw File
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 
22 #include <err.h>
23 #include <errno.h>
24 #include <locale.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <unistd.h>
29 #include <libgen.h>
30 #include <time.h>
31 
32 #include "got_error.h"
33 #include "got_object.h"
34 #include "got_reference.h"
35 #include "got_repository.h"
36 #include "got_worktree.h"
37 #include "got_diff.h"
38 #include "got_commit_graph.h"
39 #include "got_blame.h"
40 
41 #ifndef nitems
42 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
43 #endif
44 
45 struct cmd {
46 	const char	 *cmd_name;
47 	const struct got_error *(*cmd_main)(int, char *[]);
48 	void		(*cmd_usage)(void);
49 	const char	 *cmd_descr;
50 };
51 
52 __dead static void	usage(void);
53 __dead static void	usage_checkout(void);
54 __dead static void	usage_log(void);
55 __dead static void	usage_diff(void);
56 __dead static void	usage_blame(void);
57 
58 static const struct got_error*		cmd_checkout(int, char *[]);
59 static const struct got_error*		cmd_log(int, char *[]);
60 static const struct got_error*		cmd_diff(int, char *[]);
61 static const struct got_error*		cmd_blame(int, char *[]);
62 #ifdef notyet
63 static const struct got_error*		cmd_status(int, char *[]);
64 #endif
65 
66 static struct cmd got_commands[] = {
67 	{ "checkout",	cmd_checkout,	usage_checkout,
68 	    "check out a new work tree from a repository" },
69 	{ "log",	cmd_log,	usage_log,
70 	    "show repository history" },
71 	{ "diff",	cmd_diff,	usage_diff,
72 	    "compare files and directories" },
73 	{ "blame",	cmd_blame,	usage_blame,
74 	    " show when lines in a file were changed" },
75 #ifdef notyet
76 	{ "status",	cmd_status,	usage_status,
77 	    "show modification status of files" },
78 #endif
79 };
80 
81 int
82 main(int argc, char *argv[])
83 {
84 	struct cmd *cmd;
85 	unsigned int i;
86 	int ch;
87 	int hflag = 0;
88 
89 	setlocale(LC_ALL, "");
90 
91 	while ((ch = getopt(argc, argv, "h")) != -1) {
92 		switch (ch) {
93 		case 'h':
94 			hflag = 1;
95 			break;
96 		default:
97 			usage();
98 			/* NOTREACHED */
99 		}
100 	}
101 
102 	argc -= optind;
103 	argv += optind;
104 	optind = 0;
105 
106 	if (argc <= 0)
107 		usage();
108 
109 	for (i = 0; i < nitems(got_commands); i++) {
110 		const struct got_error *error;
111 
112 		cmd = &got_commands[i];
113 
114 		if (strncmp(cmd->cmd_name, argv[0], strlen(argv[0])))
115 			continue;
116 
117 		if (hflag)
118 			got_commands[i].cmd_usage();
119 
120 		error = got_commands[i].cmd_main(argc, argv);
121 		if (error) {
122 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
123 			return 1;
124 		}
125 
126 		return 0;
127 	}
128 
129 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
130 	return 1;
131 }
132 
133 __dead static void
134 usage(void)
135 {
136 	int i;
137 
138 	fprintf(stderr, "usage: %s [-h] command [arg ...]\n\n"
139 	    "Available commands:\n", getprogname());
140 	for (i = 0; i < nitems(got_commands); i++) {
141 		struct cmd *cmd = &got_commands[i];
142 		fprintf(stderr, "    %s: %s\n", cmd->cmd_name, cmd->cmd_descr);
143 	}
144 	exit(1);
145 }
146 
147 __dead static void
148 usage_checkout(void)
149 {
150 	fprintf(stderr, "usage: %s checkout [-p prefix] repository-path "
151 	    "[worktree-path]\n", getprogname());
152 	exit(1);
153 }
154 
155 static void
156 checkout_progress(void *arg, const char *path)
157 {
158 	char *worktree_path = arg;
159 
160 	while (path[0] == '/')
161 		path++;
162 
163 	printf("A  %s/%s\n", worktree_path, path);
164 }
165 
166 static const struct got_error *
167 cmd_checkout(int argc, char *argv[])
168 {
169 	const struct got_error *error = NULL;
170 	struct got_repository *repo = NULL;
171 	struct got_reference *head_ref = NULL;
172 	struct got_worktree *worktree = NULL;
173 	char *repo_path = NULL;
174 	char *worktree_path = NULL;
175 	const char *path_prefix = "";
176 	int ch;
177 
178 	while ((ch = getopt(argc, argv, "p:")) != -1) {
179 		switch (ch) {
180 		case 'p':
181 			path_prefix = optarg;
182 			break;
183 		default:
184 			usage();
185 			/* NOTREACHED */
186 		}
187 	}
188 
189 	argc -= optind;
190 	argv += optind;
191 
192 #ifndef PROFILE
193 	if (pledge("stdio rpath wpath cpath flock proc", NULL) == -1)
194 		err(1, "pledge");
195 #endif
196 	if (argc == 1) {
197 		char *cwd, *base, *dotgit;
198 		repo_path = realpath(argv[0], NULL);
199 		if (repo_path == NULL)
200 			return got_error_from_errno();
201 		cwd = getcwd(NULL, 0);
202 		if (cwd == NULL) {
203 			error = got_error_from_errno();
204 			goto done;
205 		}
206 		if (path_prefix[0])
207 			base = basename(path_prefix);
208 		else
209 			base = basename(repo_path);
210 		if (base == NULL) {
211 			error = got_error_from_errno();
212 			goto done;
213 		}
214 		dotgit = strstr(base, ".git");
215 		if (dotgit)
216 			*dotgit = '\0';
217 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
218 			error = got_error_from_errno();
219 			free(cwd);
220 			goto done;
221 		}
222 		free(cwd);
223 	} else if (argc == 2) {
224 		repo_path = realpath(argv[0], NULL);
225 		if (repo_path == NULL) {
226 			error = got_error_from_errno();
227 			goto done;
228 		}
229 		worktree_path = realpath(argv[1], NULL);
230 		if (worktree_path == NULL) {
231 			error = got_error_from_errno();
232 			goto done;
233 		}
234 	} else
235 		usage_checkout();
236 
237 	error = got_repo_open(&repo, repo_path);
238 	if (error != NULL)
239 		goto done;
240 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
241 	if (error != NULL)
242 		goto done;
243 
244 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
245 	if (error != NULL)
246 		goto done;
247 
248 	error = got_worktree_open(&worktree, worktree_path);
249 	if (error != NULL)
250 		goto done;
251 
252 	error = got_worktree_checkout_files(worktree, head_ref, repo,
253 	    checkout_progress, worktree_path);
254 	if (error != NULL)
255 		goto done;
256 
257 	printf("Checked out %s\n", worktree_path);
258 	printf("Now shut up and hack\n");
259 
260 done:
261 	free(repo_path);
262 	free(worktree_path);
263 	return error;
264 }
265 
266 static const struct got_error *
267 print_patch(struct got_commit_object *commit, struct got_object_id *id,
268     struct got_repository *repo)
269 {
270 	const struct got_error *err = NULL;
271 	struct got_tree_object *tree1 = NULL, *tree2;
272 	struct got_object_qid *qid;
273 
274 	err = got_object_open_as_tree(&tree2, repo, commit->tree_id);
275 	if (err)
276 		return err;
277 
278 	qid = SIMPLEQ_FIRST(&commit->parent_ids);
279 	if (qid != NULL) {
280 		struct got_commit_object *pcommit;
281 
282 		err = got_object_open_as_commit(&pcommit, repo, qid->id);
283 		if (err)
284 			return err;
285 
286 		err = got_object_open_as_tree(&tree1, repo, pcommit->tree_id);
287 		got_object_commit_close(pcommit);
288 		if (err)
289 			return err;
290 	}
291 
292 	err = got_diff_tree(tree1, tree2, repo, stdout);
293 	if (tree1)
294 		got_object_tree_close(tree1);
295 	got_object_tree_close(tree2);
296 	return err;
297 }
298 
299 static char *
300 get_datestr(time_t *time, char *datebuf)
301 {
302 	char *p, *s = ctime_r(time, datebuf);
303 	p = strchr(s, '\n');
304 	if (p)
305 		*p = '\0';
306 	return s;
307 }
308 
309 static const struct got_error *
310 print_commit(struct got_commit_object *commit, struct got_object_id *id,
311     struct got_repository *repo, int show_patch)
312 {
313 	const struct got_error *err = NULL;
314 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
315 	char datebuf[26];
316 	time_t author_time, committer_time;
317 
318 	err = got_object_id_str(&id_str, id);
319 	if (err)
320 		return err;
321 
322 	author_time = mktime(&commit->tm_author);
323 	committer_time = mktime(&commit->tm_committer);
324 #if 0
325 	/* This would express the date in committer's timezone. */
326 	author_time += commit->tm_author.tm_gmtoff;
327 	committer_time += commit->tm_committer.tm_gmtoff;
328 #endif
329 
330 	printf("-----------------------------------------------\n");
331 	printf("commit %s\n", id_str);
332 	free(id_str);
333 	datestr = get_datestr(&author_time, datebuf);
334 	printf("author: %s  %s UTC\n", commit->author, datestr);
335 	if (strcmp(commit->author, commit->committer) != 0 ||
336 	    author_time != committer_time) {
337 		datestr = get_datestr(&committer_time, datebuf);
338 		printf("committer: %s  %s UTC\n", commit->committer, datestr);
339 	}
340 	if (commit->nparents > 1) {
341 		struct got_object_qid *qid;
342 		int n = 1;
343 		SIMPLEQ_FOREACH(qid, &commit->parent_ids, entry) {
344 			err = got_object_id_str(&id_str, qid->id);
345 			if (err)
346 				return err;
347 			printf("parent %d: %s\n", n++, id_str);
348 			free(id_str);
349 		}
350 	}
351 
352 	logmsg0 = strdup(commit->logmsg);
353 	if (logmsg0 == NULL)
354 		return got_error_from_errno();
355 
356 	logmsg = logmsg0;
357 	do {
358 		line = strsep(&logmsg, "\n");
359 		if (line)
360 			printf(" %s\n", line);
361 	} while (line);
362 	free(logmsg0);
363 
364 	if (show_patch) {
365 		err = print_patch(commit, id, repo);
366 		if (err == 0)
367 			printf("\n");
368 	}
369 
370 	return err;
371 }
372 
373 static const struct got_error *
374 print_commits(struct got_object *root_obj, struct got_object_id *root_id,
375     struct got_repository *repo, char *path, int show_patch, int limit,
376     int first_parent_traversal)
377 {
378 	const struct got_error *err;
379 	struct got_commit_graph *graph;
380 	int ncommits, found_obj = 0;
381 	int is_root_path = (strcmp(path, "/") == 0);
382 
383 	err = got_commit_graph_open(&graph, root_id, first_parent_traversal,
384 	    repo);
385 	if (err)
386 		return err;
387 	err = got_commit_graph_iter_start(graph, root_id);
388 	if (err)
389 		goto done;
390 	do {
391 		struct got_commit_object *commit;
392 		struct got_object_id *id;
393 
394 		err = got_commit_graph_iter_next(&id, graph);
395 		if (err) {
396 			if (err->code == GOT_ERR_ITER_COMPLETED) {
397 				err = NULL;
398 				break;
399 			}
400 			if (err->code != GOT_ERR_ITER_NEED_MORE)
401 				break;
402 			err = got_commit_graph_fetch_commits(&ncommits,
403 			    graph, 1, repo);
404 			if (err)
405 				break;
406 			else
407 				continue;
408 		}
409 		if (id == NULL)
410 			break;
411 
412 		err = got_object_open_as_commit(&commit, repo, id);
413 		if (err)
414 			break;
415 		if (!is_root_path) {
416 			struct got_object *obj;
417 			struct got_object_qid *pid;
418 			int changed = 0;
419 
420 			err = got_object_open_by_path(&obj, repo, id, path);
421 			if (err) {
422 				got_object_commit_close(commit);
423 				if (err->code == GOT_ERR_NO_OBJ && found_obj) {
424 					/*
425 					 * History of the path stops here
426 					 * on the current commit's branch.
427 					 * Keep logging on other branches.
428 					 */
429 					err = NULL;
430 					continue;
431 				}
432 				break;
433 			}
434 			found_obj = 1;
435 
436 			pid = SIMPLEQ_FIRST(&commit->parent_ids);
437 			if (pid != NULL) {
438 				struct got_object *pobj;
439 				err = got_object_open_by_path(&pobj, repo,
440 				    pid->id, path);
441 				if (err) {
442 					if (err->code != GOT_ERR_NO_OBJ) {
443 						got_object_close(obj);
444 						got_object_commit_close(commit);
445 						break;
446 					}
447 					err = NULL;
448 					changed = 1;
449 				} else {
450 					struct got_object_id *id, *pid;
451 					id = got_object_get_id(obj);
452 					if (id == NULL) {
453 						err = got_error_from_errno();
454 						got_object_close(obj);
455 						break;
456 					}
457 					pid = got_object_get_id(pobj);
458 					if (pid == NULL) {
459 						err = got_error_from_errno();
460 						free(id);
461 						got_object_close(obj);
462 						got_object_close(pobj);
463 						break;
464 					}
465 					changed =
466 					    (got_object_id_cmp(id, pid) != 0);
467 					got_object_close(pobj);
468 					free(id);
469 					free(pid);
470 				}
471 			}
472 			got_object_close(obj);
473 			if (!changed) {
474 				got_object_commit_close(commit);
475 				continue;
476 			}
477 		}
478 		err = print_commit(commit, id, repo, show_patch);
479 		got_object_commit_close(commit);
480 		if (err || (limit && --limit == 0))
481 			break;
482 	} while (ncommits > 0);
483 done:
484 	got_commit_graph_close(graph);
485 	return err;
486 }
487 
488 __dead static void
489 usage_log(void)
490 {
491 	fprintf(stderr, "usage: %s log [-c commit] [-f] [ -l N ] [-p] "
492 	    "[-r repository-path] [path]\n", getprogname());
493 	exit(1);
494 }
495 
496 static const struct got_error *
497 cmd_log(int argc, char *argv[])
498 {
499 	const struct got_error *error;
500 	struct got_repository *repo = NULL;
501 	struct got_object_id *id = NULL;
502 	struct got_object *obj = NULL;
503 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
504 	char *start_commit = NULL;
505 	int ch;
506 	int show_patch = 0, limit = 0, first_parent_traversal = 0;
507 	const char *errstr;
508 
509 #ifndef PROFILE
510 	if (pledge("stdio rpath wpath cpath flock proc", NULL) == -1)
511 		err(1, "pledge");
512 #endif
513 
514 	while ((ch = getopt(argc, argv, "pc:l:fr:")) != -1) {
515 		switch (ch) {
516 		case 'p':
517 			show_patch = 1;
518 			break;
519 		case 'c':
520 			start_commit = optarg;
521 			break;
522 		case 'l':
523 			limit = strtonum(optarg, 1, INT_MAX, &errstr);
524 			if (errstr != NULL)
525 				err(1, "-l option %s", errstr);
526 			break;
527 		case 'f':
528 			first_parent_traversal = 1;
529 			break;
530 		case 'r':
531 			repo_path = realpath(optarg, NULL);
532 			if (repo_path == NULL)
533 				err(1, "-r option");
534 			break;
535 		default:
536 			usage();
537 			/* NOTREACHED */
538 		}
539 	}
540 
541 	argc -= optind;
542 	argv += optind;
543 
544 	if (argc == 0)
545 		path = strdup("");
546 	else if (argc == 1)
547 		path = strdup(argv[0]);
548 	else
549 		usage_log();
550 	if (path == NULL)
551 		return got_error_from_errno();
552 
553 	cwd = getcwd(NULL, 0);
554 	if (cwd == NULL) {
555 		error = got_error_from_errno();
556 		goto done;
557 	}
558 	if (repo_path == NULL) {
559 		repo_path = strdup(cwd);
560 		if (repo_path == NULL) {
561 			error = got_error_from_errno();
562 			goto done;
563 		}
564 	}
565 
566 	error = got_repo_open(&repo, repo_path);
567 	if (error != NULL)
568 		goto done;
569 
570 	if (start_commit == NULL) {
571 		struct got_reference *head_ref;
572 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
573 		if (error != NULL)
574 			return error;
575 		error = got_ref_resolve(&id, repo, head_ref);
576 		got_ref_close(head_ref);
577 		if (error != NULL)
578 			return error;
579 		error = got_object_open(&obj, repo, id);
580 	} else {
581 		struct got_reference *ref;
582 		error = got_ref_open(&ref, repo, start_commit);
583 		if (error == NULL) {
584 			error = got_ref_resolve(&id, repo, ref);
585 			got_ref_close(ref);
586 			if (error != NULL)
587 				return error;
588 			error = got_object_open(&obj, repo, id);
589 			if (error != NULL)
590 				return error;
591 		}
592 		if (obj == NULL) {
593 			error = got_object_open_by_id_str(&obj, repo,
594 			    start_commit);
595 			if (error != NULL)
596 				return error;
597 			id = got_object_get_id(obj);
598 			if (id == NULL)
599 				error = got_error_from_errno();
600 		}
601 	}
602 	if (error != NULL)
603 		goto done;
604 	if (got_object_get_type(obj) != GOT_OBJ_TYPE_COMMIT) {
605 		error = got_error(GOT_ERR_OBJ_TYPE);
606 		goto done;
607 	}
608 
609 	error = got_repo_map_path(&in_repo_path, repo, path);
610 	if (error != NULL)
611 		goto done;
612 	if (in_repo_path) {
613 		free(path);
614 		path = in_repo_path;
615 	}
616 
617 	error = print_commits(obj, id, repo, path, show_patch,
618 	    limit, first_parent_traversal);
619 done:
620 	free(path);
621 	free(repo_path);
622 	free(cwd);
623 	if (obj)
624 		got_object_close(obj);
625 	free(id);
626 	if (repo)
627 		got_repo_close(repo);
628 	return error;
629 }
630 
631 __dead static void
632 usage_diff(void)
633 {
634 	fprintf(stderr, "usage: %s diff [repository-path] object1 object2\n",
635 	    getprogname());
636 	exit(1);
637 }
638 
639 static const struct got_error *
640 cmd_diff(int argc, char *argv[])
641 {
642 	const struct got_error *error;
643 	struct got_repository *repo = NULL;
644 	struct got_object_id *id1 = NULL, *id2 = NULL;
645 	struct got_object *obj1 = NULL, *obj2 = NULL;
646 	char *repo_path = NULL;
647 	char *obj_id_str1 = NULL, *obj_id_str2 = NULL;
648 	int ch;
649 
650 #ifndef PROFILE
651 	if (pledge("stdio rpath wpath cpath flock proc", NULL) == -1)
652 		err(1, "pledge");
653 #endif
654 
655 	while ((ch = getopt(argc, argv, "")) != -1) {
656 		switch (ch) {
657 		default:
658 			usage();
659 			/* NOTREACHED */
660 		}
661 	}
662 
663 	argc -= optind;
664 	argv += optind;
665 
666 	if (argc == 0) {
667 		usage_diff(); /* TODO show local worktree changes */
668 	} else if (argc == 2) {
669 		repo_path = getcwd(NULL, 0);
670 		if (repo_path == NULL)
671 			return got_error_from_errno();
672 		obj_id_str1 = argv[0];
673 		obj_id_str2 = argv[1];
674 	} else if (argc == 3) {
675 		repo_path = realpath(argv[0], NULL);
676 		if (repo_path == NULL)
677 			return got_error_from_errno();
678 		obj_id_str1 = argv[1];
679 		obj_id_str2 = argv[2];
680 	} else
681 		usage_diff();
682 
683 	error = got_repo_open(&repo, repo_path);
684 	free(repo_path);
685 	if (error != NULL)
686 		goto done;
687 
688 	error = got_object_open_by_id_str(&obj1, repo, obj_id_str1);
689 	if (error == NULL) {
690 		id1 = got_object_get_id(obj1);
691 		if (id1 == NULL)
692 			error = got_error_from_errno();
693 	}
694 	if (error != NULL)
695 		goto done;
696 
697 	error = got_object_open_by_id_str(&obj2, repo, obj_id_str2);
698 	if (error == NULL) {
699 		id2 = got_object_get_id(obj2);
700 		if (id2 == NULL)
701 			error = got_error_from_errno();
702 	}
703 	if (error != NULL)
704 		goto done;
705 
706 	if (got_object_get_type(obj1) != got_object_get_type(obj2)) {
707 		error = got_error(GOT_ERR_OBJ_TYPE);
708 		goto done;
709 	}
710 
711 	switch (got_object_get_type(obj1)) {
712 	case GOT_OBJ_TYPE_BLOB:
713 		error = got_diff_objects_as_blobs(obj1, obj2, repo, stdout);
714 		break;
715 	case GOT_OBJ_TYPE_TREE:
716 		error = got_diff_objects_as_trees(obj1, obj2, repo, stdout);
717 		break;
718 	case GOT_OBJ_TYPE_COMMIT:
719 		error = got_diff_objects_as_commits(obj1, obj2, repo, stdout);
720 		break;
721 	default:
722 		error = got_error(GOT_ERR_OBJ_TYPE);
723 	}
724 
725 done:
726 	if (obj1)
727 		got_object_close(obj1);
728 	if (obj2)
729 		got_object_close(obj2);
730 	if (id1)
731 		free(id1);
732 	if (id2)
733 		free(id2);
734 	if (repo)
735 		got_repo_close(repo);
736 	return error;
737 }
738 
739 __dead static void
740 usage_blame(void)
741 {
742 	fprintf(stderr, "usage: %s blame [-c commit] [-r repository-path] path\n",
743 	    getprogname());
744 	exit(1);
745 }
746 
747 static const struct got_error *
748 cmd_blame(int argc, char *argv[])
749 {
750 	const struct got_error *error;
751 	struct got_repository *repo = NULL;
752 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
753 	struct got_object_id *commit_id = NULL;
754 	char *commit_id_str = NULL;
755 	int ch;
756 
757 #ifndef PROFILE
758 	if (pledge("stdio rpath wpath cpath flock proc", NULL) == -1)
759 		err(1, "pledge");
760 #endif
761 
762 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
763 		switch (ch) {
764 		case 'c':
765 			commit_id_str = optarg;
766 			break;
767 		case 'r':
768 			repo_path = realpath(optarg, NULL);
769 			if (repo_path == NULL)
770 				err(1, "-r option");
771 			break;
772 		default:
773 			usage();
774 			/* NOTREACHED */
775 		}
776 	}
777 
778 	argc -= optind;
779 	argv += optind;
780 
781 	if (argc == 1)
782 		path = argv[0];
783 	else
784 		usage_blame();
785 
786 	cwd = getcwd(NULL, 0);
787 	if (cwd == NULL) {
788 		error = got_error_from_errno();
789 		goto done;
790 	}
791 	if (repo_path == NULL) {
792 		repo_path = strdup(cwd);
793 		if (repo_path == NULL) {
794 			error = got_error_from_errno();
795 			goto done;
796 		}
797 	}
798 
799 	error = got_repo_open(&repo, repo_path);
800 	if (error != NULL)
801 		goto done;
802 
803 	error = got_repo_map_path(&in_repo_path, repo, path);
804 	if (error != NULL)
805 		goto done;
806 
807 	if (commit_id_str == NULL) {
808 		struct got_reference *head_ref;
809 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
810 		if (error != NULL)
811 			goto done;
812 		error = got_ref_resolve(&commit_id, repo, head_ref);
813 		got_ref_close(head_ref);
814 		if (error != NULL)
815 			goto done;
816 	} else {
817 		struct got_object *obj;
818 		error = got_object_open_by_id_str(&obj, repo, commit_id_str);
819 		if (error != NULL)
820 			goto done;
821 		commit_id = got_object_get_id(obj);
822 		if (commit_id == NULL)
823 			error = got_error_from_errno();
824 		got_object_close(obj);
825 	}
826 
827 	error = got_blame(in_repo_path, commit_id, repo, stdout);
828 done:
829 	free(in_repo_path);
830 	free(repo_path);
831 	free(cwd);
832 	free(commit_id);
833 	if (repo)
834 		got_repo_close(repo);
835 	return error;
836 }
837 
838 #ifdef notyet
839 static const struct got_error *
840 cmd_status(int argc __unused, char *argv[] __unused)
841 {
842 	git_repository *repo = NULL;
843 	git_status_list *status;
844 	git_status_options statusopts;
845 	size_t i;
846 
847 	git_libgit2_init();
848 
849 	if (git_repository_open_ext(&repo, ".", 0, NULL))
850 		errx(1, "git_repository_open: %s", giterr_last()->message);
851 
852 	if (git_repository_is_bare(repo))
853 		errx(1, "bar repository");
854 
855 	if (git_status_init_options(&statusopts, GIT_STATUS_OPTIONS_VERSION))
856 		errx(1, "git_status_init_options: %s", giterr_last()->message);
857 
858 	statusopts.show  = GIT_STATUS_SHOW_INDEX_AND_WORKDIR;
859 	statusopts.flags = GIT_STATUS_OPT_INCLUDE_UNTRACKED |
860 	    GIT_STATUS_OPT_RENAMES_HEAD_TO_INDEX |
861 	    GIT_STATUS_OPT_SORT_CASE_SENSITIVELY;
862 
863 	if (git_status_list_new(&status, repo, &statusopts))
864 		errx(1, "git_status_list_new: %s", giterr_last()->message);
865 
866 	for (i = 0; i < git_status_list_entrycount(status); i++) {
867 		const git_status_entry *se;
868 
869 		se = git_status_byindex(status, i);
870 		switch (se->status) {
871 		case GIT_STATUS_WT_NEW:
872 			printf("? %s\n", se->index_to_workdir->new_file.path);
873 			break;
874 		case GIT_STATUS_WT_MODIFIED:
875 			printf("M %s\n", se->index_to_workdir->new_file.path);
876 			break;
877 		case GIT_STATUS_WT_DELETED:
878 			printf("R %s\n", se->index_to_workdir->new_file.path);
879 			break;
880 		case GIT_STATUS_WT_RENAMED:
881 			printf("m %s -> %s\n",
882 			    se->index_to_workdir->old_file.path,
883 			    se->index_to_workdir->new_file.path);
884 			break;
885 		case GIT_STATUS_WT_TYPECHANGE:
886 			printf("t %s\n", se->index_to_workdir->new_file.path);
887 			break;
888 		case GIT_STATUS_INDEX_NEW:
889 			printf("A %s\n", se->head_to_index->new_file.path);
890 			break;
891 		case GIT_STATUS_INDEX_MODIFIED:
892 			printf("M %s\n", se->head_to_index->old_file.path);
893 			break;
894 		case GIT_STATUS_INDEX_DELETED:
895 			printf("R %s\n", se->head_to_index->old_file.path);
896 			break;
897 		case GIT_STATUS_INDEX_RENAMED:
898 			printf("m %s -> %s\n",
899 			    se->head_to_index->old_file.path,
900 			    se->head_to_index->new_file.path);
901 			break;
902 		case GIT_STATUS_INDEX_TYPECHANGE:
903 			printf("t %s\n", se->head_to_index->old_file.path);
904 			break;
905 		case GIT_STATUS_CURRENT:
906 		default:
907 			break;
908 		}
909 	}
910 
911 	git_status_list_free(status);
912 	git_repository_free(repo);
913 	git_libgit2_shutdown();
914 
915 	return 0;
916 }
917 #endif