xref: /openbsd-src/usr.bin/tmux/options.c (revision 7350f337b9e3eb4461d99580e625c7ef148d107c) 
1 /* $OpenBSD: options.c,v 1.52 2019/06/23 10:00:29 nicm Exp $ */
2 
3 /*
4  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/types.h>
20 
21 #include <ctype.h>
22 #include <stdarg.h>
23 #include <stdlib.h>
24 #include <string.h>
25 
26 #include "tmux.h"
27 
28 /*
29  * Option handling; each option has a name, type and value and is stored in
30  * a red-black tree.
31  */
32 
33 struct options_array_item {
34 	u_int				 index;
35 	union options_value		 value;
36 	RB_ENTRY(options_array_item)	 entry;
37 };
38 static int
39 options_array_cmp(struct options_array_item *a1, struct options_array_item *a2)
40 {
41 	if (a1->index < a2->index)
42 		return (-1);
43 	if (a1->index > a2->index)
44 		return (1);
45 	return (0);
46 }
47 RB_GENERATE_STATIC(options_array, options_array_item, entry, options_array_cmp);
48 
49 struct options_entry {
50 	struct options				*owner;
51 
52 	const char				*name;
53 	const struct options_table_entry	*tableentry;
54 	union options_value			 value;
55 
56 	RB_ENTRY(options_entry)			 entry;
57 };
58 
59 struct options {
60 	RB_HEAD(options_tree, options_entry)	 tree;
61 	struct options				*parent;
62 };
63 
64 static struct options_entry	*options_add(struct options *, const char *);
65 
66 #define OPTIONS_IS_STRING(o)						\
67 	((o)->tableentry == NULL ||					\
68 	    (o)->tableentry->type == OPTIONS_TABLE_STRING)
69 #define OPTIONS_IS_NUMBER(o) \
70 	((o)->tableentry != NULL &&					\
71 	    ((o)->tableentry->type == OPTIONS_TABLE_NUMBER ||		\
72 	    (o)->tableentry->type == OPTIONS_TABLE_KEY ||		\
73 	    (o)->tableentry->type == OPTIONS_TABLE_COLOUR ||		\
74 	    (o)->tableentry->type == OPTIONS_TABLE_FLAG ||		\
75 	    (o)->tableentry->type == OPTIONS_TABLE_CHOICE))
76 #define OPTIONS_IS_STYLE(o) \
77 	((o)->tableentry != NULL &&					\
78 	    (o)->tableentry->type == OPTIONS_TABLE_STYLE)
79 #define OPTIONS_IS_COMMAND(o) \
80 	((o)->tableentry != NULL &&					\
81 	    (o)->tableentry->type == OPTIONS_TABLE_COMMAND)
82 
83 #define OPTIONS_IS_ARRAY(o)						\
84 	((o)->tableentry != NULL &&					\
85 	    ((o)->tableentry->flags & OPTIONS_TABLE_IS_ARRAY))
86 
87 static int	options_cmp(struct options_entry *, struct options_entry *);
88 RB_GENERATE_STATIC(options_tree, options_entry, entry, options_cmp);
89 
90 static int
91 options_cmp(struct options_entry *lhs, struct options_entry *rhs)
92 {
93 	return (strcmp(lhs->name, rhs->name));
94 }
95 
96 static const struct options_table_entry *
97 options_parent_table_entry(struct options *oo, const char *s)
98 {
99 	struct options_entry	*o;
100 
101 	if (oo->parent == NULL)
102 		fatalx("no parent options for %s", s);
103 	o = options_get(oo->parent, s);
104 	if (o == NULL)
105 		fatalx("%s not in parent options", s);
106 	return (o->tableentry);
107 }
108 
109 static void
110 options_value_free(struct options_entry *o, union options_value *ov)
111 {
112 	if (OPTIONS_IS_STRING(o))
113 		free(ov->string);
114 	if (OPTIONS_IS_COMMAND(o) && ov->cmdlist != NULL)
115 		cmd_list_free(ov->cmdlist);
116 }
117 
118 static char *
119 options_value_tostring(struct options_entry *o, union options_value *ov,
120     int numeric)
121 {
122 	char	*s;
123 
124 	if (OPTIONS_IS_COMMAND(o))
125 		return (cmd_list_print(ov->cmdlist, 0));
126 	if (OPTIONS_IS_STYLE(o))
127 		return (xstrdup(style_tostring(&ov->style)));
128 	if (OPTIONS_IS_NUMBER(o)) {
129 		switch (o->tableentry->type) {
130 		case OPTIONS_TABLE_NUMBER:
131 			xasprintf(&s, "%lld", ov->number);
132 			break;
133 		case OPTIONS_TABLE_KEY:
134 			s = xstrdup(key_string_lookup_key(ov->number));
135 			break;
136 		case OPTIONS_TABLE_COLOUR:
137 			s = xstrdup(colour_tostring(ov->number));
138 			break;
139 		case OPTIONS_TABLE_FLAG:
140 			if (numeric)
141 				xasprintf(&s, "%lld", ov->number);
142 			else
143 				s = xstrdup(ov->number ? "on" : "off");
144 			break;
145 		case OPTIONS_TABLE_CHOICE:
146 			s = xstrdup(o->tableentry->choices[ov->number]);
147 			break;
148 		case OPTIONS_TABLE_STRING:
149 		case OPTIONS_TABLE_STYLE:
150 		case OPTIONS_TABLE_COMMAND:
151 			fatalx("not a number option type");
152 		}
153 		return (s);
154 	}
155 	if (OPTIONS_IS_STRING(o))
156 		return (xstrdup(ov->string));
157 	return (xstrdup(""));
158 }
159 
160 struct options *
161 options_create(struct options *parent)
162 {
163 	struct options	*oo;
164 
165 	oo = xcalloc(1, sizeof *oo);
166 	RB_INIT(&oo->tree);
167 	oo->parent = parent;
168 	return (oo);
169 }
170 
171 void
172 options_free(struct options *oo)
173 {
174 	struct options_entry	*o, *tmp;
175 
176 	RB_FOREACH_SAFE(o, options_tree, &oo->tree, tmp)
177 		options_remove(o);
178 	free(oo);
179 }
180 
181 void
182 options_set_parent(struct options *oo, struct options *parent)
183 {
184 	oo->parent = parent;
185 }
186 
187 struct options_entry *
188 options_first(struct options *oo)
189 {
190 	return (RB_MIN(options_tree, &oo->tree));
191 }
192 
193 struct options_entry *
194 options_next(struct options_entry *o)
195 {
196 	return (RB_NEXT(options_tree, &oo->tree, o));
197 }
198 
199 struct options_entry *
200 options_get_only(struct options *oo, const char *name)
201 {
202 	struct options_entry	o;
203 
204 	o.name = name;
205 	return (RB_FIND(options_tree, &oo->tree, &o));
206 }
207 
208 struct options_entry *
209 options_get(struct options *oo, const char *name)
210 {
211 	struct options_entry	*o;
212 
213 	o = options_get_only(oo, name);
214 	while (o == NULL) {
215 		oo = oo->parent;
216 		if (oo == NULL)
217 			break;
218 		o = options_get_only(oo, name);
219 	}
220 	return (o);
221 }
222 
223 struct options_entry *
224 options_empty(struct options *oo, const struct options_table_entry *oe)
225 {
226 	struct options_entry	*o;
227 
228 	o = options_add(oo, oe->name);
229 	o->tableentry = oe;
230 
231 	if (oe->flags & OPTIONS_TABLE_IS_ARRAY)
232 		RB_INIT(&o->value.array);
233 
234 	return (o);
235 }
236 
237 struct options_entry *
238 options_default(struct options *oo, const struct options_table_entry *oe)
239 {
240 	struct options_entry	*o;
241 	union options_value	*ov;
242 	u_int			 i;
243 
244 	o = options_empty(oo, oe);
245 	ov = &o->value;
246 
247 	if (oe->flags & OPTIONS_TABLE_IS_ARRAY) {
248 		if (oe->default_arr == NULL) {
249 			options_array_assign(o, oe->default_str, NULL);
250 			return (o);
251 		}
252 		for (i = 0; oe->default_arr[i] != NULL; i++)
253 			options_array_set(o, i, oe->default_arr[i], 0, NULL);
254 		return (o);
255 	}
256 
257 	switch (oe->type) {
258 	case OPTIONS_TABLE_STRING:
259 		ov->string = xstrdup(oe->default_str);
260 		break;
261 	case OPTIONS_TABLE_STYLE:
262 		style_set(&ov->style, &grid_default_cell);
263 		style_parse(&ov->style, &grid_default_cell, oe->default_str);
264 		break;
265 	default:
266 		ov->number = oe->default_num;
267 		break;
268 	}
269 	return (o);
270 }
271 
272 static struct options_entry *
273 options_add(struct options *oo, const char *name)
274 {
275 	struct options_entry	*o;
276 
277 	o = options_get_only(oo, name);
278 	if (o != NULL)
279 		options_remove(o);
280 
281 	o = xcalloc(1, sizeof *o);
282 	o->owner = oo;
283 	o->name = xstrdup(name);
284 
285 	RB_INSERT(options_tree, &oo->tree, o);
286 	return (o);
287 }
288 
289 void
290 options_remove(struct options_entry *o)
291 {
292 	struct options	*oo = o->owner;
293 
294 	if (OPTIONS_IS_ARRAY(o))
295 		options_array_clear(o);
296 	else
297 		options_value_free(o, &o->value);
298 	RB_REMOVE(options_tree, &oo->tree, o);
299 	free(o);
300 }
301 
302 const char *
303 options_name(struct options_entry *o)
304 {
305 	return (o->name);
306 }
307 
308 const struct options_table_entry *
309 options_table_entry(struct options_entry *o)
310 {
311 	return (o->tableentry);
312 }
313 
314 static struct options_array_item *
315 options_array_item(struct options_entry *o, u_int idx)
316 {
317 	struct options_array_item	a;
318 
319 	a.index = idx;
320 	return (RB_FIND(options_array, &o->value.array, &a));
321 }
322 
323 static void
324 options_array_free(struct options_entry *o, struct options_array_item *a)
325 {
326 	options_value_free(o, &a->value);
327 	RB_REMOVE(options_array, &o->value.array, a);
328 	free(a);
329 }
330 
331 void
332 options_array_clear(struct options_entry *o)
333 {
334 	struct options_array_item	*a, *a1;
335 
336 	if (!OPTIONS_IS_ARRAY(o))
337 		return;
338 
339 	RB_FOREACH_SAFE(a, options_array, &o->value.array, a1)
340 	    options_array_free(o, a);
341 }
342 
343 union options_value *
344 options_array_get(struct options_entry *o, u_int idx)
345 {
346 	struct options_array_item	*a;
347 
348 	if (!OPTIONS_IS_ARRAY(o))
349 		return (NULL);
350 	a = options_array_item(o, idx);
351 	if (a == NULL)
352 		return (NULL);
353 	return (&a->value);
354 }
355 
356 int
357 options_array_set(struct options_entry *o, u_int idx, const char *value,
358     int append, char **cause)
359 {
360 	struct options_array_item	*a;
361 	char				*new;
362 	struct cmd_parse_result		*pr;
363 
364 	if (!OPTIONS_IS_ARRAY(o)) {
365 		if (cause != NULL)
366 			*cause = xstrdup("not an array");
367 		return (-1);
368 	}
369 
370 	if (OPTIONS_IS_COMMAND(o) && value != NULL) {
371 		pr = cmd_parse_from_string(value, NULL);
372 		switch (pr->status) {
373 		case CMD_PARSE_EMPTY:
374 			if (cause != NULL)
375 				*cause = xstrdup("empty command");
376 			return (-1);
377 		case CMD_PARSE_ERROR:
378 			if (cause != NULL)
379 				*cause = pr->error;
380 			else
381 				free(pr->error);
382 			return (-1);
383 		case CMD_PARSE_SUCCESS:
384 			break;
385 		}
386 	}
387 
388 	a = options_array_item(o, idx);
389 	if (value == NULL) {
390 		if (a != NULL)
391 			options_array_free(o, a);
392 		return (0);
393 	}
394 
395 	if (OPTIONS_IS_STRING(o)) {
396 		if (a != NULL && append)
397 			xasprintf(&new, "%s%s", a->value.string, value);
398 		else
399 			new = xstrdup(value);
400 	}
401 
402 	if (a == NULL) {
403 		a = xcalloc(1, sizeof *a);
404 		a->index = idx;
405 		RB_INSERT(options_array, &o->value.array, a);
406 	} else
407 		options_value_free(o, &a->value);
408 
409 	if (OPTIONS_IS_STRING(o))
410 		a->value.string = new;
411 	else if (OPTIONS_IS_COMMAND(o))
412 		a->value.cmdlist = pr->cmdlist;
413 	return (0);
414 }
415 
416 int
417 options_array_assign(struct options_entry *o, const char *s, char **cause)
418 {
419 	const char	*separator;
420 	char		*copy, *next, *string;
421 	u_int		 i;
422 
423 	separator = o->tableentry->separator;
424 	if (separator == NULL)
425 		separator = " ,";
426 	if (*separator == '\0') {
427 		if (*s == '\0')
428 			return (0);
429 		for (i = 0; i < UINT_MAX; i++) {
430 			if (options_array_item(o, i) == NULL)
431 				break;
432 		}
433 		return (options_array_set(o, i, s, 0, cause));
434 	}
435 
436 	if (*s == '\0')
437 		return (0);
438 	copy = string = xstrdup(s);
439 	while ((next = strsep(&string, separator)) != NULL) {
440 		if (*next == '\0')
441 			continue;
442 		for (i = 0; i < UINT_MAX; i++) {
443 			if (options_array_item(o, i) == NULL)
444 				break;
445 		}
446 		if (i == UINT_MAX)
447 			break;
448 		if (options_array_set(o, i, next, 0, cause) != 0) {
449 			free(copy);
450 			return (-1);
451 		}
452 	}
453 	free(copy);
454 	return (0);
455 }
456 
457 struct options_array_item *
458 options_array_first(struct options_entry *o)
459 {
460 	if (!OPTIONS_IS_ARRAY(o))
461 		return (NULL);
462 	return (RB_MIN(options_array, &o->value.array));
463 }
464 
465 struct options_array_item *
466 options_array_next(struct options_array_item *a)
467 {
468 	return (RB_NEXT(options_array, &o->value.array, a));
469 }
470 
471 u_int
472 options_array_item_index(struct options_array_item *a)
473 {
474 	return (a->index);
475 }
476 
477 union options_value *
478 options_array_item_value(struct options_array_item *a)
479 {
480 	return (&a->value);
481 }
482 
483 int
484 options_isarray(struct options_entry *o)
485 {
486 	return (OPTIONS_IS_ARRAY(o));
487 }
488 
489 int
490 options_isstring(struct options_entry *o)
491 {
492 	return (OPTIONS_IS_STRING(o));
493 }
494 
495 char *
496 options_tostring(struct options_entry *o, int idx, int numeric)
497 {
498 	struct options_array_item	*a;
499 
500 	if (OPTIONS_IS_ARRAY(o)) {
501 		if (idx == -1)
502 			return (xstrdup(""));
503 		a = options_array_item(o, idx);
504 		if (a == NULL)
505 			return (xstrdup(""));
506 		return (options_value_tostring(o, &a->value, numeric));
507 	}
508 	return (options_value_tostring(o, &o->value, numeric));
509 }
510 
511 char *
512 options_parse(const char *name, int *idx)
513 {
514 	char	*copy, *cp, *end;
515 
516 	if (*name == '\0')
517 		return (NULL);
518 	copy = xstrdup(name);
519 	if ((cp = strchr(copy, '[')) == NULL) {
520 		*idx = -1;
521 		return (copy);
522 	}
523 	end = strchr(cp + 1, ']');
524 	if (end == NULL || end[1] != '\0' || !isdigit((u_char)end[-1])) {
525 		free(copy);
526 		return (NULL);
527 	}
528 	if (sscanf(cp, "[%d]", idx) != 1 || *idx < 0) {
529 		free(copy);
530 		return (NULL);
531 	}
532 	*cp = '\0';
533 	return (copy);
534 }
535 
536 struct options_entry *
537 options_parse_get(struct options *oo, const char *s, int *idx, int only)
538 {
539 	struct options_entry	*o;
540 	char			*name;
541 
542 	name = options_parse(s, idx);
543 	if (name == NULL)
544 		return (NULL);
545 	if (only)
546 		o = options_get_only(oo, name);
547 	else
548 		o = options_get(oo, name);
549 	free(name);
550 	return (o);
551 }
552 
553 char *
554 options_match(const char *s, int *idx, int *ambiguous)
555 {
556 	const struct options_table_entry	*oe, *found;
557 	char					*name;
558 	size_t					 namelen;
559 
560 	name = options_parse(s, idx);
561 	if (name == NULL)
562 		return (NULL);
563 	namelen = strlen(name);
564 
565 	if (*name == '@') {
566 		*ambiguous = 0;
567 		return (name);
568 	}
569 
570 	found = NULL;
571 	for (oe = options_table; oe->name != NULL; oe++) {
572 		if (strcmp(oe->name, name) == 0) {
573 			found = oe;
574 			break;
575 		}
576 		if (strncmp(oe->name, name, namelen) == 0) {
577 			if (found != NULL) {
578 				*ambiguous = 1;
579 				free(name);
580 				return (NULL);
581 			}
582 			found = oe;
583 		}
584 	}
585 	free(name);
586 	if (found == NULL) {
587 		*ambiguous = 0;
588 		return (NULL);
589 	}
590 	return (xstrdup(found->name));
591 }
592 
593 struct options_entry *
594 options_match_get(struct options *oo, const char *s, int *idx, int only,
595     int* ambiguous)
596 {
597 	char			*name;
598 	struct options_entry	*o;
599 
600 	name = options_match(s, idx, ambiguous);
601 	if (name == NULL)
602 		return (NULL);
603 	*ambiguous = 0;
604 	if (only)
605 		o = options_get_only(oo, name);
606 	else
607 		o = options_get(oo, name);
608 	free(name);
609 	return (o);
610 }
611 
612 const char *
613 options_get_string(struct options *oo, const char *name)
614 {
615 	struct options_entry	*o;
616 
617 	o = options_get(oo, name);
618 	if (o == NULL)
619 		fatalx("missing option %s", name);
620 	if (!OPTIONS_IS_STRING(o))
621 		fatalx("option %s is not a string", name);
622 	return (o->value.string);
623 }
624 
625 long long
626 options_get_number(struct options *oo, const char *name)
627 {
628 	struct options_entry	*o;
629 
630 	o = options_get(oo, name);
631 	if (o == NULL)
632 		fatalx("missing option %s", name);
633 	if (!OPTIONS_IS_NUMBER(o))
634 	    fatalx("option %s is not a number", name);
635 	return (o->value.number);
636 }
637 
638 struct style *
639 options_get_style(struct options *oo, const char *name)
640 {
641 	struct options_entry	*o;
642 
643 	o = options_get(oo, name);
644 	if (o == NULL)
645 		fatalx("missing option %s", name);
646 	if (!OPTIONS_IS_STYLE(o))
647 		fatalx("option %s is not a style", name);
648 	return (&o->value.style);
649 }
650 
651 struct options_entry *
652 options_set_string(struct options *oo, const char *name, int append,
653     const char *fmt, ...)
654 {
655 	struct options_entry	*o;
656 	va_list			 ap;
657 	char			*s, *value;
658 
659 	va_start(ap, fmt);
660 	xvasprintf(&s, fmt, ap);
661 	va_end(ap);
662 
663 	o = options_get_only(oo, name);
664 	if (o != NULL && append && OPTIONS_IS_STRING(o)) {
665 		xasprintf(&value, "%s%s", o->value.string, s);
666 		free(s);
667 	} else
668 		value = s;
669 	if (o == NULL && *name == '@')
670 		o = options_add(oo, name);
671 	else if (o == NULL) {
672 		o = options_default(oo, options_parent_table_entry(oo, name));
673 		if (o == NULL)
674 			return (NULL);
675 	}
676 
677 	if (!OPTIONS_IS_STRING(o))
678 		fatalx("option %s is not a string", name);
679 	free(o->value.string);
680 	o->value.string = value;
681 	return (o);
682 }
683 
684 struct options_entry *
685 options_set_number(struct options *oo, const char *name, long long value)
686 {
687 	struct options_entry	*o;
688 
689 	if (*name == '@')
690 		fatalx("user option %s must be a string", name);
691 
692 	o = options_get_only(oo, name);
693 	if (o == NULL) {
694 		o = options_default(oo, options_parent_table_entry(oo, name));
695 		if (o == NULL)
696 			return (NULL);
697 	}
698 
699 	if (!OPTIONS_IS_NUMBER(o))
700 		fatalx("option %s is not a number", name);
701 	o->value.number = value;
702 	return (o);
703 }
704 
705 struct options_entry *
706 options_set_style(struct options *oo, const char *name, int append,
707     const char *value)
708 {
709 	struct options_entry	*o;
710 	struct style		 sy;
711 
712 	if (*name == '@')
713 		fatalx("user option %s must be a string", name);
714 
715 	o = options_get_only(oo, name);
716 	if (o != NULL && append && OPTIONS_IS_STYLE(o))
717 		style_copy(&sy, &o->value.style);
718 	else
719 		style_set(&sy, &grid_default_cell);
720 	if (style_parse(&sy, &grid_default_cell, value) == -1)
721 		return (NULL);
722 	if (o == NULL) {
723 		o = options_default(oo, options_parent_table_entry(oo, name));
724 		if (o == NULL)
725 			return (NULL);
726 	}
727 
728 	if (!OPTIONS_IS_STYLE(o))
729 		fatalx("option %s is not a style", name);
730 	style_copy(&o->value.style, &sy);
731 	return (o);
732 }
733 
734 int
735 options_scope_from_name(struct args *args, int window,
736     const char *name, struct cmd_find_state *fs, struct options **oo,
737     char **cause)
738 {
739 	struct session				*s = fs->s;
740 	struct winlink				*wl = fs->wl;
741 	struct window_pane			*wp = fs->wp;
742 	const char				*target = args_get(args, 't');
743 	const struct options_table_entry	*oe;
744 	int					 scope = OPTIONS_TABLE_NONE;
745 
746 	if (*name == '@')
747 		return (options_scope_from_flags(args, window, fs, oo, cause));
748 
749 	for (oe = options_table; oe->name != NULL; oe++) {
750 		if (strcmp(oe->name, name) == 0)
751 			break;
752 	}
753 	if (oe->name == NULL) {
754 		xasprintf(cause, "unknown option: %s", name);
755 		return (OPTIONS_TABLE_NONE);
756 	}
757 	switch (oe->scope) {
758 	case OPTIONS_TABLE_SERVER:
759 		*oo = global_options;
760 		scope = OPTIONS_TABLE_SERVER;
761 		break;
762 	case OPTIONS_TABLE_SESSION:
763 		if (args_has(args, 'g')) {
764 			*oo = global_s_options;
765 			scope = OPTIONS_TABLE_SESSION;
766 		} else if (s == NULL && target != NULL)
767 			xasprintf(cause, "no such session: %s", target);
768 		else if (s == NULL)
769 			xasprintf(cause, "no current session");
770 		else {
771 			*oo = s->options;
772 			scope = OPTIONS_TABLE_SESSION;
773 		}
774 		break;
775 	case OPTIONS_TABLE_WINDOW|OPTIONS_TABLE_PANE:
776 		if (args_has(args, 'p')) {
777 			if (wp == NULL && target != NULL)
778 				xasprintf(cause, "no such pane: %s", target);
779 			else if (wp == NULL)
780 				xasprintf(cause, "no current pane");
781 			else {
782 				*oo = wp->options;
783 				scope = OPTIONS_TABLE_PANE;
784 			}
785 			break;
786 		}
787 		/* FALLTHROUGH */
788 	case OPTIONS_TABLE_WINDOW:
789 		if (args_has(args, 'g')) {
790 			*oo = global_w_options;
791 			scope = OPTIONS_TABLE_WINDOW;
792 		} else if (wl == NULL && target != NULL)
793 			xasprintf(cause, "no such window: %s", target);
794 		else if (wl == NULL)
795 			xasprintf(cause, "no current window");
796 		else {
797 			*oo = wl->window->options;
798 			scope = OPTIONS_TABLE_WINDOW;
799 		}
800 		break;
801 	}
802 	return (scope);
803 }
804 
805 int
806 options_scope_from_flags(struct args *args, int window,
807     struct cmd_find_state *fs, struct options **oo, char **cause)
808 {
809 	struct session		*s = fs->s;
810 	struct winlink		*wl = fs->wl;
811 	struct window_pane	*wp = fs->wp;
812 	const char		*target = args_get(args, 't');
813 
814 	if (args_has(args, 's')) {
815 		*oo = global_options;
816 		return (OPTIONS_TABLE_SERVER);
817 	}
818 
819 	if (args_has(args, 'p')) {
820 		if (wp == NULL) {
821 			if (target != NULL)
822 				xasprintf(cause, "no such pane: %s", target);
823 			else
824 				xasprintf(cause, "no current pane");
825 			return (OPTIONS_TABLE_NONE);
826 		}
827 		*oo = wp->options;
828 		return (OPTIONS_TABLE_PANE);
829 	} else if (window || args_has(args, 'w')) {
830 		if (args_has(args, 'g')) {
831 			*oo = global_w_options;
832 			return (OPTIONS_TABLE_WINDOW);
833 		}
834 		if (wl == NULL) {
835 			if (target != NULL)
836 				xasprintf(cause, "no such window: %s", target);
837 			else
838 				xasprintf(cause, "no current window");
839 			return (OPTIONS_TABLE_NONE);
840 		}
841 		*oo = wl->window->options;
842 		return (OPTIONS_TABLE_WINDOW);
843 	} else {
844 		if (args_has(args, 'g')) {
845 			*oo = global_s_options;
846 			return (OPTIONS_TABLE_SESSION);
847 		}
848 		if (s == NULL) {
849 			if (target != NULL)
850 				xasprintf(cause, "no such session: %s", target);
851 			else
852 				xasprintf(cause, "no current session");
853 			return (OPTIONS_TABLE_NONE);
854 		}
855 		*oo = s->options;
856 		return (OPTIONS_TABLE_SESSION);
857 	}
858 }
859