1 /*
2  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include "compat.h"
18 
19 #include <curses.h>
20 #include <limits.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <unistd.h>
24 
25 #include "defaults.h"
26 #include "telescope.h"
27 #include "ui.h"
28 
29 char *new_tab_url = NULL;
30 
31 int autosave = 20;
32 int dont_wrap_pre = 0;
33 int emojify_link = 1;
34 int enable_colors = 1;
35 int fill_column = 80;
36 int hide_pre_blocks = 0;
37 int hide_pre_closing_line = 0;
38 int hide_pre_context = 0;
39 int olivetti_mode = 1;
40 int set_title = 1;
41 int tab_bar_show = 1;
42 
43 struct lineprefix line_prefixes[] = {
44 	[LINE_TEXT] =		{ "",		"" },
45 	[LINE_LINK] =		{ "→ ",	"  " },
46 	[LINE_TITLE_1] =	{ "# ",		"  " },
47 	[LINE_TITLE_2] =	{ "## ",	"   " },
48 	[LINE_TITLE_3] =	{ "### ",	"    " },
49 	[LINE_ITEM] =		{ " • ",	"   " },
50 	[LINE_QUOTE] =		{ " ┃ ",	" ┃ " },
51 	[LINE_PRE_START] =	{ "─── ",	"    " },
52 	[LINE_PRE_CONTENT] =	{ "",		"" },
53 	[LINE_PRE_END] =	{ "─── ",	"" },
54 
55 	[LINE_PATCH] =		{"", ""},
56 	[LINE_PATCH_HDR] =	{"", ""},
57 	[LINE_PATCH_HUNK_HDR] =	{"", ""},
58 	[LINE_PATCH_ADD] =	{"", ""},
59 	[LINE_PATCH_DEL] =	{"", ""},
60 
61 	[LINE_COMPL] =		{"", ""},
62 	[LINE_COMPL_CURRENT] =	{"", ""},
63 
64 	[LINE_HELP] =		{"", ""},
65 };
66 
67 struct line_face line_faces[] = {
68 	[LINE_TEXT] =		{
69 		.prfx_pair = PT_PRFX,
70 		.pair = PT,
71 		.trail_pair = PT_TRAIL,
72 	},
73 	[LINE_LINK] =		{
74 		.prfx_pair = PL_PRFX,
75 		.pair = PL,
76 		.trail_pair = PL_TRAIL,
77 		.attr = A_UNDERLINE,
78 	},
79 	[LINE_TITLE_1] =	{
80 		.prfx_pair = PT1_PRFX,
81 		.pair = PT1,
82 		.trail_pair = PT1_TRAIL,
83 		.attr = A_BOLD,
84 	},
85 	[LINE_TITLE_2] =	{
86 		.prfx_pair = PT2_PRFX,
87 		.pair = PT2,
88 		.trail_pair = PT2_TRAIL,
89 		.attr = A_BOLD,
90 	},
91 	[LINE_TITLE_3] =	{
92 		.prfx_pair = PT3_PRFX,
93 		.pair = PT3,
94 		.trail_pair = PT3_TRAIL,
95 		.attr = A_BOLD,
96 	},
97 	[LINE_ITEM] =		{
98 		.prfx_pair = PI_PRFX,
99 		.pair = PI,
100 		.trail_pair = PI_TRAIL,
101 	},
102 	[LINE_QUOTE] =		{
103 		.prfx_pair = PQ_PRFX,
104 		.pair = PQ,
105 		.trail_pair = PQ_TRAIL,
106 		.attr = A_DIM,
107 	},
108 	[LINE_PRE_START] =	{
109 		.prfx_pair = PPSTART_PRFX,
110 		.pair = PPSTART,
111 		.trail_pair = PPSTART_TRAIL,
112 	},
113 	[LINE_PRE_CONTENT] =	{
114 		.prfx_pair = PP_PRFX,
115 		.pair = PP,
116 		.trail_pair = PP_TRAIL,
117 	},
118 	[LINE_PRE_END] =	{
119 		.prfx_pair = PPEND_PRFX,
120 		.pair = PPEND,
121 		.trail_pair = PPEND_TRAIL,
122 	},
123 
124 	/* text/x-patch */
125 	[LINE_PATCH] = {
126 		.prfx_pair = PPATCH_PRFX,
127 		.pair = PPATCH,
128 		.trail_pair = PPATCH_TRAIL,
129 	},
130 	[LINE_PATCH_HDR] = {
131 		.prfx_pair = PPATCH_HDR_PRFX,
132 		.pair = PPATCH_HDR,
133 		.trail_pair = PPATCH_HDR_TRAIL,
134 	},
135 	[LINE_PATCH_HUNK_HDR] = {
136 		.prfx_pair = PPATCH_HUNK_HDR_PRFX,
137 		.pair = PPATCH_HUNK_HDR,
138 		.trail_pair = PPATCH_HUNK_HDR_TRAIL,
139 	},
140 	[LINE_PATCH_ADD] = {
141 		.prfx_pair = PPATCH_ADD_PRFX,
142 		.pair = PPATCH_ADD,
143 		.trail_pair = PPATCH_ADD_TRAIL,
144 	},
145 	[LINE_PATCH_DEL] = {
146 		.prfx_pair = PPATCH_DEL_PRFX,
147 		.pair = PPATCH_DEL,
148 		.trail_pair = PPATCH_DEL_TRAIL,
149 	},
150 
151 	/* minibuffer */
152 	[LINE_COMPL] = {
153 		.prfx_pair = PCOMPL_PRFX,
154 		.pair = PCOMPL,
155 		.trail_pair = PCOMPL_TRAIL,
156 	},
157 	[LINE_COMPL_CURRENT] = {
158 		.prfx_pair = PCOMPL_CURR_PRFX,
159 		.pair = PCOMPL_CURR,
160 		.trail_pair = PCOMPL_CURR_TRAIL,
161 		.attr = A_REVERSE,
162 		.trail_attr = A_REVERSE,
163 	},
164 
165 	/* help */
166 	[LINE_HELP] = {
167 		.prfx_pair = PHELP_PRFX,
168 		.pair = PHELP,
169 		.trail_pair = PHELP_TRAIL,
170 	},
171 };
172 
173 struct tab_face tab_face = {
174 	.bg_attr = A_REVERSE, .bg_bg = -1, .bg_fg = -1,
175 	.t_attr  = A_REVERSE, .t_bg  = -1, .t_fg  = -1,
176 	.c_attr  = A_NORMAL,  .c_bg  = -1, .c_fg  = -1,
177 
178 	/*
179 	 * set these so that even when enable-color=0 the bar has some
180 	 * sane defaults.
181 	 */
182 	.background =	A_REVERSE,
183 	.tab =		A_REVERSE,
184 	.current =	A_NORMAL,
185 };
186 
187 struct body_face body_face = {
188 	.lbg = -1, .lfg = -1,
189 	.bg  = -1, .fg  = -1,
190 	.rbg = -1, .rfg = -1,
191 };
192 
193 struct modeline_face modeline_face = {
194 	.bg  = -1,
195 	.fg  = -1,
196 	.attr = A_REVERSE,
197 };
198 
199 struct minibuffer_face minibuffer_face = {
200 	.bg = -1,
201 	.fg = -1,
202 	.attr = A_NORMAL,
203 };
204 
205 struct mapping {
206 	const char	*label;
207 	int		 linetype;
208 } mappings[] = {
209 	{"text",	LINE_TEXT},
210 	{"link",	LINE_LINK},
211 	{"title1",	LINE_TITLE_1},
212 	{"title2",	LINE_TITLE_2},
213 	{"title3",	LINE_TITLE_3},
214 	{"item",	LINE_ITEM},
215 	{"quote",	LINE_QUOTE},
216 	{"pre.start",	LINE_PRE_START},
217 	{"pre",		LINE_PRE_CONTENT},
218 	{"pre.end",	LINE_PRE_END},
219 
220 	/* text/x-patch */
221 	{"patch",	LINE_PATCH},
222 	{"patch.hdr",	LINE_PATCH_HDR},
223 	{"patch.hunk",	LINE_PATCH_HUNK_HDR},
224 	{"patch.add",	LINE_PATCH_ADD},
225 	{"patch.del",	LINE_PATCH_DEL},
226 
227 	/* minibuffer */
228 	{"compl",	LINE_COMPL},
229 	{"compl.current", LINE_COMPL_CURRENT},
230 
231 	/* help */
232 	{"help",	LINE_HELP},
233 };
234 
235 static struct mapping *
236 mapping_by_name(const char *name)
237 {
238 	size_t i;
239 
240 	for (i = 0; i < sizeof(mappings)/sizeof(mappings[0]); ++i) {
241 		if (!strcmp(name, mappings[i].label))
242 			return &mappings[i];
243 	}
244 
245 	return NULL;
246 }
247 
248 
249 static inline void
250 global_set_key(const char *key, void (*fn)(struct buffer*))
251 {
252 	if (!kmap_define_key(&global_map, key, fn))
253 		_exit(1);
254 }
255 
256 static inline void
257 minibuffer_set_key(const char *key, void (*fn)(struct buffer*))
258 {
259 	if (!kmap_define_key(&minibuffer_map, key, fn))
260 		_exit(1);
261 }
262 
263 static void
264 load_default_keys(void)
265 {
266 	/* === global map === */
267 
268 	/* emacs */
269 	global_set_key("C-p",		cmd_previous_line);
270 	global_set_key("C-n",		cmd_next_line);
271 	global_set_key("C-f",		cmd_forward_char);
272 	global_set_key("C-b",		cmd_backward_char);
273 	global_set_key("M-{",		cmd_backward_paragraph);
274 	global_set_key("M-}",		cmd_forward_paragraph);
275 	global_set_key("C-a",		cmd_move_beginning_of_line);
276 	global_set_key("C-e",		cmd_move_end_of_line);
277 
278 	global_set_key("M-v",		cmd_scroll_up);
279 	global_set_key("C-v",		cmd_scroll_down);
280 	global_set_key("M-space",	cmd_scroll_up);
281 	global_set_key("space",		cmd_scroll_down);
282 
283 	global_set_key("M-<",		cmd_beginning_of_buffer);
284 	global_set_key("M->",		cmd_end_of_buffer);
285 
286 	global_set_key("C-x C-c",	cmd_kill_telescope);
287 
288 	global_set_key("C-g",		cmd_clear_minibuf);
289 
290 	global_set_key("M-x",		cmd_execute_extended_command);
291 
292 	global_set_key("C-c {",		cmd_dec_fill_column);
293 	global_set_key("C-c }",		cmd_inc_fill_column);
294 
295 	global_set_key("C-c p",		cmd_previous_heading);
296 	global_set_key("C-c n",		cmd_next_heading);
297 
298 	global_set_key(">",		cmd_load_url);
299 	global_set_key("<",		cmd_load_current_url);
300 	global_set_key("C-x C-f",	cmd_load_url);
301 	global_set_key("C-x M-f",	cmd_load_current_url);
302 
303 	global_set_key("C-x o",		cmd_other_window);
304 
305 	global_set_key("C-x t 0",	cmd_tab_close);
306 	global_set_key("C-x t 1",	cmd_tab_close_other);
307 	global_set_key("C-x t 2",	cmd_tab_new);
308 	global_set_key("C-x t o",	cmd_tab_next);
309 	global_set_key("C-x t O",	cmd_tab_previous);
310 	global_set_key("C-x t m",	cmd_tab_move);
311 	global_set_key("C-x t M",	cmd_tab_move_to);
312 
313 	global_set_key("B",		cmd_previous_page);
314 	global_set_key("C-M-b",		cmd_previous_page);
315 	global_set_key("F",		cmd_next_page);
316 	global_set_key("C-M-f",		cmd_next_page);
317 
318 	global_set_key("<f7> a",	cmd_bookmark_page);
319 	global_set_key("<f7> <f7>",	cmd_list_bookmarks);
320 
321 	global_set_key("C-z",		cmd_suspend_telescope);
322 
323 	/* vi/vi-like */
324 	global_set_key("k",		cmd_previous_line);
325 	global_set_key("j",		cmd_next_line);
326 	global_set_key("l",		cmd_forward_char);
327 	global_set_key("h",		cmd_backward_char);
328 	global_set_key("{",		cmd_backward_paragraph);
329 	global_set_key("}",		cmd_forward_paragraph);
330 	global_set_key("^",		cmd_move_beginning_of_line);
331 	global_set_key("$",		cmd_move_end_of_line);
332 
333 	global_set_key("K",		cmd_scroll_line_up);
334 	global_set_key("J",		cmd_scroll_line_down);
335 
336 	global_set_key("g g",		cmd_beginning_of_buffer);
337 	global_set_key("G",		cmd_end_of_buffer);
338 
339 	global_set_key("g D",		cmd_tab_close);
340 	global_set_key("g N",		cmd_tab_new);
341 	global_set_key("g t",		cmd_tab_next);
342 	global_set_key("g T",		cmd_tab_previous);
343 	global_set_key("g M-t",		cmd_tab_move);
344 	global_set_key("g M-T",		cmd_tab_move_to);
345 
346 	global_set_key("H",		cmd_previous_page);
347 	global_set_key("L",		cmd_next_page);
348 
349 	/* tmp */
350 	global_set_key("q",		cmd_kill_telescope);
351 
352 	global_set_key("esc",		cmd_clear_minibuf);
353 
354 	global_set_key(":",		cmd_execute_extended_command);
355 
356 	/* cua */
357 	global_set_key("<up>",		cmd_previous_line);
358 	global_set_key("<down>",	cmd_next_line);
359 	global_set_key("<right>",	cmd_forward_char);
360 	global_set_key("<left>",	cmd_backward_char);
361 	global_set_key("<home>",	cmd_move_beginning_of_line);
362 	global_set_key("<end>",		cmd_move_end_of_line);
363 	global_set_key("<prior>",	cmd_scroll_up);
364 	global_set_key("<next>",	cmd_scroll_down);
365 
366 	global_set_key("C-w",		cmd_tab_close);
367 	global_set_key("C-t",		cmd_tab_new);
368 	global_set_key("M-<prior>",	cmd_tab_previous);
369 	global_set_key("M-<next>",	cmd_tab_next);
370 
371 	global_set_key("M-<left>",	cmd_previous_page);
372 	global_set_key("M-<right>",	cmd_next_page);
373 
374 	global_set_key("<f5>",		cmd_reload_page);
375 	global_set_key("r",		cmd_reload_page);
376 
377 	/* "ncurses standard" */
378 	global_set_key("C-l",		cmd_redraw);
379 
380 	/* global */
381 	global_set_key("<f1>",		cmd_toggle_help);
382 	global_set_key("C-m",		cmd_push_button);
383 	global_set_key("M-enter",	cmd_push_button_new_tab);
384 	global_set_key("M-tab",		cmd_previous_button);
385 	global_set_key("backtab",	cmd_previous_button);
386 	global_set_key("tab",		cmd_next_button);
387 	global_set_key("M-t",		cmd_tab_select);
388 	global_set_key("[",		cmd_tab_previous);
389 	global_set_key("]",		cmd_tab_next);
390 	global_set_key("M-[",		cmd_tab_move_to);
391 	global_set_key("M-]",		cmd_tab_move);
392 	global_set_key("M-l",		cmd_link_select);
393 	global_set_key("M-/",		cmd_swiper);
394 	global_set_key("t",		cmd_toc);
395 
396 	/* === minibuffer map === */
397 	minibuffer_set_key("ret",		cmd_mini_complete_and_exit);
398 	minibuffer_set_key("C-g",		cmd_mini_abort);
399 	minibuffer_set_key("esc",		cmd_mini_abort);
400 	minibuffer_set_key("C-d",		cmd_mini_delete_char);
401 	minibuffer_set_key("del",		cmd_mini_delete_backward_char);
402 	minibuffer_set_key("backspace",		cmd_mini_delete_backward_char);
403 	minibuffer_set_key("C-h",		cmd_mini_delete_backward_char);
404 
405 	minibuffer_set_key("C-b",		cmd_backward_char);
406 	minibuffer_set_key("C-f",		cmd_forward_char);
407 	minibuffer_set_key("<left>",		cmd_backward_char);
408 	minibuffer_set_key("<right>",		cmd_forward_char);
409 	minibuffer_set_key("C-e",		cmd_move_end_of_line);
410 	minibuffer_set_key("C-a",		cmd_move_beginning_of_line);
411 	minibuffer_set_key("<end>",		cmd_move_end_of_line);
412 	minibuffer_set_key("<home>",		cmd_move_beginning_of_line);
413 	minibuffer_set_key("C-k",		cmd_mini_kill_line);
414 
415 	minibuffer_set_key("M-p",		cmd_mini_previous_history_element);
416 	minibuffer_set_key("M-n",		cmd_mini_next_history_element);
417 
418 	minibuffer_set_key("C-p",		cmd_previous_completion);
419 	minibuffer_set_key("C-n",		cmd_next_completion);
420 	minibuffer_set_key("<up>",		cmd_previous_completion);
421 	minibuffer_set_key("<down>",		cmd_next_completion);
422 
423 	minibuffer_set_key("C-v",		cmd_mini_scroll_down);
424 	minibuffer_set_key("M-v",		cmd_mini_scroll_up);
425 	minibuffer_set_key("<next>",		cmd_mini_scroll_down);
426 	minibuffer_set_key("<prior>",		cmd_mini_scroll_up);
427 
428 	minibuffer_set_key("M-<",		cmd_mini_goto_beginning);
429 	minibuffer_set_key("M->",		cmd_mini_goto_end);
430 
431 	minibuffer_set_key("tab",		cmd_insert_current_candidate);
432 }
433 
434 void
435 config_init(void)
436 {
437 	struct line_face *f;
438 	size_t i, len;
439 
440 	len = sizeof(line_faces)/sizeof(line_faces[0]);
441 	for (i = 0; i < len; ++i) {
442 		f = &line_faces[i];
443 
444 		f->prfx_bg = f->bg = f->trail_bg = -1;
445 		f->prfx_fg = f->fg = f->trail_fg = -1;
446 	}
447 
448 	line_faces[LINE_LINK].fg = COLOR_BLUE;
449 	line_faces[LINE_PATCH_ADD].fg = COLOR_GREEN;
450 	line_faces[LINE_PATCH_DEL].fg = COLOR_RED;
451 
452 	load_default_keys();
453 }
454 
455 int
456 config_setprfx(const char *name, const char *prfx, const char *cont)
457 {
458 	struct lineprefix *p;
459 	struct mapping *m;
460 
461 	if (!has_prefix(name, "line."))
462 		return 0;
463 	name += 5;
464 
465 	if ((m = mapping_by_name(name)) == NULL)
466 		return 0;
467 
468 	p = &line_prefixes[m->linetype];
469 	p->prfx1 = prfx;
470 	p->prfx2 = cont;
471 
472 	return 1;
473 }
474 
475 int
476 config_setvari(const char *var, int val)
477 {
478 	if (!strcmp(var, "fill-column")) {
479 		if ((fill_column = val) <= 0)
480 			fill_column = INT_MAX;
481 	} else if (!strcmp(var, "olivetti-mode")) {
482 		olivetti_mode = !!val;
483 	} else if (!strcmp(var, "enable-colors")) {
484 		enable_colors = !!val;
485 	} else if (!strcmp(var, "hide-pre-context")) {
486 		hide_pre_context = !!val;
487 	} else if (!strcmp(var, "hide-pre-blocks")) {
488 		hide_pre_blocks = !!val;
489 	} else if (!strcmp(var, "hide-pre-closing-line")) {
490 		hide_pre_closing_line = !!val;
491 	} else if (!strcmp(var, "dont-wrap-pre")) {
492 		dont_wrap_pre = !!val;
493 	} else if (!strcmp(var, "emojify-link")) {
494 		emojify_link = !!val;
495 	} else if (!strcmp(var, "set-title")) {
496 		set_title = !!val;
497 	} else if (!strcmp(var, "autosave")) {
498 		autosave = val;
499 	} else if (!strcmp(var, "tab-bar-show")) {
500 		if (val < 0)
501 			tab_bar_show = -1;
502 		else if (val == 0)
503 			tab_bar_show = 0;
504 		else
505 			tab_bar_show = 1;
506 	} else {
507 		return 0;
508 	}
509 
510 	return 1;
511 }
512 
513 int
514 config_setvars(const char *var, char *val)
515 {
516 	if (!strcmp(var, "new-tab-url")) {
517 		if (new_tab_url != NULL)
518 			free(new_tab_url);
519 		new_tab_url = val;
520 	} else
521 		return 0;
522 	return 1;
523 }
524 
525 int
526 config_setcolor(int bg, const char *name, int prfx, int line, int trail)
527 {
528         struct mapping *m;
529 	struct line_face *f;
530 
531 	if (!strcmp(name, "tabline")) {
532 		if (bg)
533 			tab_face.bg_bg = prfx;
534 		else
535 			tab_face.bg_fg = prfx;
536 	} else if (has_prefix(name, "tabline.")) {
537 		name += 8;
538 
539 		if (!strcmp(name, "tab")) {
540 			if (bg)
541 				tab_face.t_bg = prfx;
542 			else
543 				tab_face.t_fg = prfx;
544 		} else if (!strcmp(name, "current")) {
545 			if (bg)
546 				tab_face.c_bg = prfx;
547 			else
548 				tab_face.c_fg = prfx;
549 		} else
550 			return 0;
551 	} else if (has_prefix(name, "line.")) {
552 		name += 5;
553 
554 		if ((m = mapping_by_name(name)) == NULL)
555 			return 0;
556 
557 		f = &line_faces[m->linetype];
558 
559 		if (bg) {
560 			f->prfx_bg = prfx;
561 			f->bg = line;
562 			f->trail_bg = trail;
563 		} else {
564 			f->prfx_fg = prfx;
565 			f->fg = line;
566 			f->trail_fg = trail;
567 		}
568 	} else if (!strcmp(name, "line")) {
569 		if (bg) {
570 			body_face.lbg = prfx;
571 			body_face.bg  = line;
572 			body_face.rbg = trail;
573 		} else {
574 			body_face.lfg = prfx;
575 			body_face.fg = line;
576 			body_face.rfg = trail;
577 		}
578 	} else if (!strcmp(name, "minibuffer")) {
579 		if (bg)
580 			minibuffer_face.bg = prfx;
581 		else
582 			minibuffer_face.fg = prfx;
583 	} else if (!strcmp(name, "modeline")) {
584 		if (bg)
585 			modeline_face.bg = prfx;
586 		else
587 			modeline_face.fg = prfx;
588 	} else {
589 		return 0;
590 	}
591 
592 	return 1;
593 }
594 
595 int
596 config_setattr(const char *name, int prfx, int line, int trail)
597 {
598 	struct mapping *m;
599 	struct line_face *f;
600 
601 	if (!strcmp(name, "tabline")) {
602 		tab_face.bg_attr = prfx;
603 	} else if (has_prefix(name, "tabline.")) {
604 		name += 8;
605 
606 		if (!strcmp(name, "tab"))
607 			tab_face.t_attr = prfx;
608 		else if (!strcmp(name, "current"))
609 			tab_face.c_attr = prfx;
610 		else
611 			return 0;
612 	} else if (has_prefix(name, "line.")) {
613 		name += 5;
614 
615 		if ((m = mapping_by_name(name)) == NULL)
616 			return 0;
617 
618 		f = &line_faces[m->linetype];
619 
620 		f->prfx_attr = prfx;
621 		f->attr = line;
622 		f->trail_attr = trail;
623 	} else if (!strcmp(name, "minibuffer")) {
624 		minibuffer_face.attr = prfx;
625 	} else if (!strcmp(name, "modeline")) {
626 		modeline_face.attr = prfx;
627 	} else {
628 		return 0;
629 	}
630 
631 	return 1;
632 }
633 
634 static inline void
635 tl_init_pair(int colors, int pair, int f, int b)
636 {
637 	if (f >= colors || !enable_colors)
638 		f = -1;
639 	if (b >= colors || !enable_colors)
640 		b = -1;
641 	init_pair(pair, f, b);
642 }
643 
644 void
645 config_apply_style(void)
646 {
647 	size_t i, colors, len;
648 	struct line_face *f;
649 
650 	colors = COLORS;
651 
652 	len = sizeof(line_faces)/sizeof(line_faces[0]);
653 	for (i = 0; i < len; ++i) {
654 		f = &line_faces[i];
655 
656 		tl_init_pair(colors, f->prfx_pair, f->prfx_fg, f->prfx_bg);
657 		f->prefix = COLOR_PAIR(f->prfx_pair) | f->prfx_attr;
658 
659 		tl_init_pair(colors, f->pair, f->fg, f->bg);
660 		f->text = COLOR_PAIR(f->pair) | f->attr;
661 
662 		tl_init_pair(colors, f->trail_pair, f->trail_fg, f->trail_bg);
663 		f->trail = COLOR_PAIR(f->trail_pair) | f->trail_attr;
664 	}
665 
666 	/* tab line */
667 	tl_init_pair(colors, PTL_BG, tab_face.bg_fg, tab_face.bg_bg);
668 	tab_face.background = COLOR_PAIR(PTL_BG) | tab_face.bg_attr;
669 
670 	tl_init_pair(colors, PTL_TAB, tab_face.t_fg, tab_face.t_bg);
671 	tab_face.tab = COLOR_PAIR(PTL_TAB) | tab_face.t_attr;
672 
673 	tl_init_pair(colors, PTL_CURR, tab_face.c_fg, tab_face.c_bg);
674 	tab_face.current = COLOR_PAIR(PTL_CURR) | tab_face.c_attr;
675 
676 	/* body */
677 	tl_init_pair(colors, PBODY, body_face.fg, body_face.bg);
678 	body_face.body = COLOR_PAIR(PBODY);
679 
680 	tl_init_pair(colors, PBLEFT, body_face.lfg, body_face.lbg);
681 	body_face.left = COLOR_PAIR(PBLEFT);
682 
683 	tl_init_pair(colors, PBRIGHT, body_face.rfg, body_face.rbg);
684 	body_face.right = COLOR_PAIR(PBRIGHT);
685 
686 	/* modeline */
687 	tl_init_pair(colors, PMODELINE, modeline_face.fg, modeline_face.bg);
688 	modeline_face.background = COLOR_PAIR(PMODELINE) | modeline_face.attr;
689 
690 	/* minibuffer */
691 	tl_init_pair(colors, PMINIBUF, minibuffer_face.fg, minibuffer_face.bg);
692 	minibuffer_face.background = COLOR_PAIR(PMINIBUF) | minibuffer_face.attr;
693 
694 }