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Date:: Sun Jul 22 13:46:50 2018 UTC
Message:: fix logic error in print_commits()
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 *obj;
273 	struct got_object_qid *qid;
274 
275 	err = got_object_open(&obj, repo, commit->tree_id);
276 	if (err)
277 		return err;
278 
279 	err = got_object_tree_open(&tree2, repo, obj);
280 	got_object_close(obj);
281 	if (err)
282 		return err;
283 
284 	qid = SIMPLEQ_FIRST(&commit->parent_ids);
285 	if (qid != NULL) {
286 		struct got_commit_object *pcommit;
287 
288 		err = got_object_open(&obj, repo, qid->id);
289 		if (err)
290 			return err;
291 
292 		err = got_object_commit_open(&pcommit, repo, obj);
293 		got_object_close(obj);
294 		if (err)
295 			return err;
296 
297 		err = got_object_open(&obj, repo, pcommit->tree_id);
298 		got_object_commit_close(pcommit);
299 		if (err)
300 			return err;
301 		err = got_object_tree_open(&tree1, repo, obj);
302 		got_object_close(obj);
303 		if (err)
304 			return err;
305 	}
306 
307 	err = got_diff_tree(tree1, tree2, repo, stdout);
308 	if (tree1)
309 		got_object_tree_close(tree1);
310 	got_object_tree_close(tree2);
311 	return err;
312 }
313 
314 static char *
315 get_datestr(time_t *time, char *datebuf)
316 {
317 	char *p, *s = ctime_r(time, datebuf);
318 	p = strchr(s, '\n');
319 	if (p)
320 		*p = '\0';
321 	return s;
322 }
323 
324 static const struct got_error *
325 print_commit(struct got_commit_object *commit, struct got_object_id *id,
326     struct got_repository *repo, int show_patch)
327 {
328 	const struct got_error *err = NULL;
329 	char *id_str, *datestr, *logmsg, *line;
330 	char datebuf[26];
331 	time_t author_time, committer_time;
332 
333 	err = got_object_id_str(&id_str, id);
334 	if (err)
335 		return err;
336 
337 	author_time = mktime(&commit->tm_author);
338 	committer_time = mktime(&commit->tm_committer);
339 #if 0
340 	/* This would express the date in committer's timezone. */
341 	author_time += commit->tm_author.tm_gmtoff;
342 	committer_time += commit->tm_committer.tm_gmtoff;
343 #endif
344 
345 	printf("-----------------------------------------------\n");
346 	printf("commit %s\n", id_str);
347 	free(id_str);
348 	datestr = get_datestr(&author_time, datebuf);
349 	printf("author: %s  %s UTC\n", commit->author, datestr);
350 	if (strcmp(commit->author, commit->committer) != 0 ||
351 	    author_time != committer_time) {
352 		datestr = get_datestr(&committer_time, datebuf);
353 		printf("committer: %s  %s UTC\n", commit->committer, datestr);
354 	}
355 	if (commit->nparents > 1) {
356 		struct got_object_qid *qid;
357 		int n = 1;
358 		SIMPLEQ_FOREACH(qid, &commit->parent_ids, entry) {
359 			err = got_object_id_str(&id_str, qid->id);
360 			if (err)
361 				return err;
362 			printf("parent %d: %s\n", n++, id_str);
363 			free(id_str);
364 		}
365 	}
366 
367 	logmsg = strdup(commit->logmsg);
368 	if (logmsg == NULL)
369 		return got_error_from_errno();
370 
371 	do {
372 		line = strsep(&logmsg, "\n");
373 		if (line)
374 			printf(" %s\n", line);
375 	} while (line);
376 	free(logmsg);
377 
378 	if (show_patch) {
379 		err = print_patch(commit, id, repo);
380 		if (err == 0)
381 			printf("\n");
382 	}
383 
384 	return err;
385 }
386 
387 static const struct got_error *
388 print_commits(struct got_object *root_obj, struct got_object_id *root_id,
389     struct got_repository *repo, char *path, int show_patch, int limit,
390     int first_parent_traversal)
391 {
392 	const struct got_error *err;
393 	struct got_commit_graph *graph;
394 	int ncommits, found_obj = 0;
395 	int is_root_path = (strcmp(path, "/") == 0);
396 
397 	err = got_commit_graph_open(&graph, root_id, first_parent_traversal,
398 	    repo);
399 	if (err)
400 		return err;
401 	err = got_commit_graph_iter_start(graph, root_id);
402 	if (err)
403 		goto done;
404 	do {
405 		struct got_commit_object *commit;
406 		struct got_object_id *id;
407 
408 		err = got_commit_graph_iter_next(&id, graph);
409 		if (err) {
410 			if (err->code == GOT_ERR_ITER_COMPLETED) {
411 				err = NULL;
412 				break;
413 			}
414 			if (err->code != GOT_ERR_ITER_NEED_MORE)
415 				break;
416 			err = got_commit_graph_fetch_commits(&ncommits,
417 			    graph, 1, repo);
418 			if (err)
419 				break;
420 			else
421 				continue;
422 		}
423 		if (id == NULL)
424 			break;
425 
426 		err = got_object_open_as_commit(&commit, repo, id);
427 		if (err)
428 			break;
429 		if (!is_root_path) {
430 			struct got_object *obj;
431 			struct got_object_qid *pid;
432 			int changed = 0;
433 
434 			err = got_object_open_by_path(&obj, repo, id, path);
435 			if (err) {
436 				got_object_commit_close(commit);
437 				if (err->code == GOT_ERR_NO_OBJ && found_obj) {
438 					/*
439 					 * History of the path stops here
440 					 * on the current commit's branch.
441 					 * Keep logging on other branches.
442 					 */
443 					err = NULL;
444 					continue;
445 				}
446 				break;
447 			}
448 			found_obj = 1;
449 
450 			pid = SIMPLEQ_FIRST(&commit->parent_ids);
451 			if (pid != NULL) {
452 				struct got_object *pobj;
453 				err = got_object_open_by_path(&pobj, repo,
454 				    pid->id, path);
455 				if (err) {
456 					if (err->code != GOT_ERR_NO_OBJ) {
457 						got_object_close(obj);
458 						got_object_commit_close(commit);
459 						break;
460 					}
461 					err = NULL;
462 					changed = 1;
463 				} else {
464 					changed = (got_object_id_cmp(
465 					    got_object_get_id(obj),
466 					    got_object_get_id(pobj)) != 0);
467 					got_object_close(pobj);
468 				}
469 			}
470 			got_object_close(obj);
471 			if (!changed) {
472 				got_object_commit_close(commit);
473 				continue;
474 			}
475 		}
476 		err = print_commit(commit, id, repo, show_patch);
477 		got_object_commit_close(commit);
478 		if (err || (limit && --limit == 0))
479 			break;
480 	} while (ncommits > 0);
481 done:
482 	got_commit_graph_close(graph);
483 	return err;
484 }
485 
486 __dead static void
487 usage_log(void)
488 {
489 	fprintf(stderr, "usage: %s log [-c commit] [-f] [ -l N ] [-p] "
490 	    "[-r repository-path] [path]\n", getprogname());
491 	exit(1);
492 }
493 
494 static const struct got_error *
495 cmd_log(int argc, char *argv[])
496 {
497 	const struct got_error *error;
498 	struct got_repository *repo = NULL;
499 	struct got_object_id *id = NULL;
500 	struct got_object *obj = NULL;
501 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
502 	char *start_commit = NULL;
503 	int ch;
504 	int show_patch = 0, limit = 0, first_parent_traversal = 0;
505 	const char *errstr;
506 
507 #ifndef PROFILE
508 	if (pledge("stdio rpath wpath cpath flock proc", NULL) == -1)
509 		err(1, "pledge");
510 #endif
511 
512 	while ((ch = getopt(argc, argv, "pc:l:fr:")) != -1) {
513 		switch (ch) {
514 		case 'p':
515 			show_patch = 1;
516 			break;
517 		case 'c':
518 			start_commit = optarg;
519 			break;
520 		case 'l':
521 			limit = strtonum(optarg, 1, INT_MAX, &errstr);
522 			if (errstr != NULL)
523 				err(1, "-l option %s", errstr);
524 			break;
525 		case 'f':
526 			first_parent_traversal = 1;
527 			break;
528 		case 'r':
529 			repo_path = realpath(optarg, NULL);
530 			if (repo_path == NULL)
531 				err(1, "-r option");
532 			break;
533 		default:
534 			usage();
535 			/* NOTREACHED */
536 		}
537 	}
538 
539 	argc -= optind;
540 	argv += optind;
541 
542 	if (argc == 0)
543 		path = strdup("");
544 	else if (argc == 1)
545 		path = strdup(argv[0]);
546 	else
547 		usage_log();
548 	if (path == NULL)
549 		return got_error_from_errno();
550 
551 	cwd = getcwd(NULL, 0);
552 	if (cwd == NULL) {
553 		error = got_error_from_errno();
554 		goto done;
555 	}
556 	if (repo_path == NULL) {
557 		repo_path = strdup(cwd);
558 		if (repo_path == NULL) {
559 			error = got_error_from_errno();
560 			goto done;
561 		}
562 	}
563 
564 	error = got_repo_open(&repo, repo_path);
565 	if (error != NULL)
566 		goto done;
567 
568 	if (start_commit == NULL) {
569 		struct got_reference *head_ref;
570 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
571 		if (error != NULL)
572 			return error;
573 		error = got_ref_resolve(&id, repo, head_ref);
574 		got_ref_close(head_ref);
575 		if (error != NULL)
576 			return error;
577 		error = got_object_open(&obj, repo, id);
578 	} else {
579 		struct got_reference *ref;
580 		error = got_ref_open(&ref, repo, start_commit);
581 		if (error == NULL) {
582 			error = got_ref_resolve(&id, repo, ref);
583 			got_ref_close(ref);
584 			if (error != NULL)
585 				return error;
586 			error = got_object_open(&obj, repo, id);
587 			if (error != NULL)
588 				return error;
589 		}
590 		if (obj == NULL) {
591 			error = got_object_open_by_id_str(&obj, repo,
592 			    start_commit);
593 			if (error != NULL)
594 				return error;
595 			id = got_object_get_id(obj);
596 			if (id == NULL)
597 				error = got_error_from_errno();
598 		}
599 	}
600 	if (error != NULL)
601 		goto done;
602 	if (got_object_get_type(obj) != GOT_OBJ_TYPE_COMMIT) {
603 		error = got_error(GOT_ERR_OBJ_TYPE);
604 		goto done;
605 	}
606 
607 	error = got_repo_map_path(&in_repo_path, repo, path);
608 	if (error != NULL)
609 		goto done;
610 	if (in_repo_path) {
611 		free(path);
612 		path = in_repo_path;
613 	}
614 
615 	error = print_commits(obj, id, repo, path, show_patch,
616 	    limit, first_parent_traversal);
617 done:
618 	free(path);
619 	free(repo_path);
620 	free(cwd);
621 	if (obj)
622 		got_object_close(obj);
623 	free(id);
624 	if (repo)
625 		got_repo_close(repo);
626 	return error;
627 }
628 
629 __dead static void
630 usage_diff(void)
631 {
632 	fprintf(stderr, "usage: %s diff [repository-path] object1 object2\n",
633 	    getprogname());
634 	exit(1);
635 }
636 
637 static const struct got_error *
638 cmd_diff(int argc, char *argv[])
639 {
640 	const struct got_error *error;
641 	struct got_repository *repo = NULL;
642 	struct got_object_id *id1 = NULL, *id2 = NULL;
643 	struct got_object *obj1 = NULL, *obj2 = NULL;
644 	char *repo_path = NULL;
645 	char *obj_id_str1 = NULL, *obj_id_str2 = NULL;
646 	int ch;
647 
648 #ifndef PROFILE
649 	if (pledge("stdio rpath wpath cpath flock proc", NULL) == -1)
650 		err(1, "pledge");
651 #endif
652 
653 	while ((ch = getopt(argc, argv, "")) != -1) {
654 		switch (ch) {
655 		default:
656 			usage();
657 			/* NOTREACHED */
658 		}
659 	}
660 
661 	argc -= optind;
662 	argv += optind;
663 
664 	if (argc == 0) {
665 		usage_diff(); /* TODO show local worktree changes */
666 	} else if (argc == 2) {
667 		repo_path = getcwd(NULL, 0);
668 		if (repo_path == NULL)
669 			return got_error_from_errno();
670 		obj_id_str1 = argv[0];
671 		obj_id_str2 = argv[1];
672 	} else if (argc == 3) {
673 		repo_path = realpath(argv[0], NULL);
674 		if (repo_path == NULL)
675 			return got_error_from_errno();
676 		obj_id_str1 = argv[1];
677 		obj_id_str2 = argv[2];
678 	} else
679 		usage_diff();
680 
681 	error = got_repo_open(&repo, repo_path);
682 	free(repo_path);
683 	if (error != NULL)
684 		goto done;
685 
686 	error = got_object_open_by_id_str(&obj1, repo, obj_id_str1);
687 	if (error == NULL) {
688 		id1 = got_object_get_id(obj1);
689 		if (id1 == NULL)
690 			error = got_error_from_errno();
691 	}
692 	if (error != NULL)
693 		goto done;
694 
695 	error = got_object_open_by_id_str(&obj2, repo, obj_id_str2);
696 	if (error == NULL) {
697 		id2 = got_object_get_id(obj2);
698 		if (id2 == NULL)
699 			error = got_error_from_errno();
700 	}
701 	if (error != NULL)
702 		goto done;
703 
704 	if (got_object_get_type(obj1) != got_object_get_type(obj2)) {
705 		error = got_error(GOT_ERR_OBJ_TYPE);
706 		goto done;
707 	}
708 
709 	switch (got_object_get_type(obj1)) {
710 	case GOT_OBJ_TYPE_BLOB:
711 		error = got_diff_objects_as_blobs(obj1, obj2, repo, stdout);
712 		break;
713 	case GOT_OBJ_TYPE_TREE:
714 		error = got_diff_objects_as_trees(obj1, obj2, repo, stdout);
715 		break;
716 	case GOT_OBJ_TYPE_COMMIT:
717 		error = got_diff_objects_as_commits(obj1, obj2, repo, stdout);
718 		break;
719 	default:
720 		error = got_error(GOT_ERR_OBJ_TYPE);
721 	}
722 
723 done:
724 	if (obj1)
725 		got_object_close(obj1);
726 	if (obj2)
727 		got_object_close(obj2);
728 	if (id1)
729 		free(id1);
730 	if (id2)
731 		free(id2);
732 	if (repo)
733 		got_repo_close(repo);
734 	return error;
735 }
736 
737 __dead static void
738 usage_blame(void)
739 {
740 	fprintf(stderr, "usage: %s blame [-c commit] [repository-path] path\n",
741 	    getprogname());
742 	exit(1);
743 }
744 
745 static const struct got_error *
746 cmd_blame(int argc, char *argv[])
747 {
748 	const struct got_error *error;
749 	struct got_repository *repo = NULL;
750 	char *repo_path = NULL;
751 	char *path = NULL;
752 	struct got_object_id *commit_id = NULL;
753 	char *commit_id_str = NULL;
754 	int ch;
755 
756 #ifndef PROFILE
757 	if (pledge("stdio rpath wpath cpath flock proc", NULL) == -1)
758 		err(1, "pledge");
759 #endif
760 
761 	while ((ch = getopt(argc, argv, "c:")) != -1) {
762 		switch (ch) {
763 		case 'c':
764 			commit_id_str = optarg;
765 			break;
766 		default:
767 			usage();
768 			/* NOTREACHED */
769 		}
770 	}
771 
772 	argc -= optind;
773 	argv += optind;
774 
775 	if (argc == 0) {
776 		usage_blame();
777 	} else if (argc == 1) {
778 		repo_path = getcwd(NULL, 0);
779 		if (repo_path == NULL)
780 			return got_error_from_errno();
781 		path = argv[0];
782 	} else if (argc == 2) {
783 		repo_path = realpath(argv[0], NULL);
784 		if (repo_path == NULL)
785 			return got_error_from_errno();
786 		path = argv[1];
787 	} else
788 		usage_blame();
789 
790 	error = got_repo_open(&repo, repo_path);
791 	free(repo_path);
792 	if (error != NULL)
793 		goto done;
794 
795 	if (commit_id_str == NULL) {
796 		struct got_reference *head_ref;
797 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
798 		if (error != NULL)
799 			return error;
800 		error = got_ref_resolve(&commit_id, repo, head_ref);
801 		got_ref_close(head_ref);
802 		if (error != NULL)
803 			return error;
804 	} else {
805 		struct got_object *obj;
806 		error = got_object_open_by_id_str(&obj, repo, commit_id_str);
807 		if (error != NULL)
808 			return error;
809 		commit_id = got_object_get_id(obj);
810 		if (commit_id == NULL)
811 			error = got_error_from_errno();
812 		got_object_close(obj);
813 	}
814 
815 	error = got_blame(path, commit_id, repo, stdout);
816 done:
817 	free(commit_id);
818 	if (repo)
819 		got_repo_close(repo);
820 	return error;
821 }
822 
823 #ifdef notyet
824 static const struct got_error *
825 cmd_status(int argc __unused, char *argv[] __unused)
826 {
827 	git_repository *repo = NULL;
828 	git_status_list *status;
829 	git_status_options statusopts;
830 	size_t i;
831 
832 	git_libgit2_init();
833 
834 	if (git_repository_open_ext(&repo, ".", 0, NULL))
835 		errx(1, "git_repository_open: %s", giterr_last()->message);
836 
837 	if (git_repository_is_bare(repo))
838 		errx(1, "bar repository");
839 
840 	if (git_status_init_options(&statusopts, GIT_STATUS_OPTIONS_VERSION))
841 		errx(1, "git_status_init_options: %s", giterr_last()->message);
842 
843 	statusopts.show  = GIT_STATUS_SHOW_INDEX_AND_WORKDIR;
844 	statusopts.flags = GIT_STATUS_OPT_INCLUDE_UNTRACKED |
845 	    GIT_STATUS_OPT_RENAMES_HEAD_TO_INDEX |
846 	    GIT_STATUS_OPT_SORT_CASE_SENSITIVELY;
847 
848 	if (git_status_list_new(&status, repo, &statusopts))
849 		errx(1, "git_status_list_new: %s", giterr_last()->message);
850 
851 	for (i = 0; i < git_status_list_entrycount(status); i++) {
852 		const git_status_entry *se;
853 
854 		se = git_status_byindex(status, i);
855 		switch (se->status) {
856 		case GIT_STATUS_WT_NEW:
857 			printf("? %s\n", se->index_to_workdir->new_file.path);
858 			break;
859 		case GIT_STATUS_WT_MODIFIED:
860 			printf("M %s\n", se->index_to_workdir->new_file.path);
861 			break;
862 		case GIT_STATUS_WT_DELETED:
863 			printf("R %s\n", se->index_to_workdir->new_file.path);
864 			break;
865 		case GIT_STATUS_WT_RENAMED:
866 			printf("m %s -> %s\n",
867 			    se->index_to_workdir->old_file.path,
868 			    se->index_to_workdir->new_file.path);
869 			break;
870 		case GIT_STATUS_WT_TYPECHANGE:
871 			printf("t %s\n", se->index_to_workdir->new_file.path);
872 			break;
873 		case GIT_STATUS_INDEX_NEW:
874 			printf("A %s\n", se->head_to_index->new_file.path);
875 			break;
876 		case GIT_STATUS_INDEX_MODIFIED:
877 			printf("M %s\n", se->head_to_index->old_file.path);
878 			break;
879 		case GIT_STATUS_INDEX_DELETED:
880 			printf("R %s\n", se->head_to_index->old_file.path);
881 			break;
882 		case GIT_STATUS_INDEX_RENAMED:
883 			printf("m %s -> %s\n",
884 			    se->head_to_index->old_file.path,
885 			    se->head_to_index->new_file.path);
886 			break;
887 		case GIT_STATUS_INDEX_TYPECHANGE:
888 			printf("t %s\n", se->head_to_index->old_file.path);
889 			break;
890 		case GIT_STATUS_CURRENT:
891 		default:
892 			break;
893 		}
894 	}
895 
896 	git_status_list_free(status);
897 	git_repository_free(repo);
898 	git_libgit2_shutdown();
899 
900 	return 0;
901 }
902 #endif