1 /*
2  * Copyright (c) 2021, 2024 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 "cmd.h"
26 #include "defaults.h"
27 #include "keymap.h"
28 #include "telescope.h"
29 #include "ui.h"
30 #include "utils.h"
31 
32 char	*default_protocol = NULL;
33 char	*download_path = NULL;
34 char	*new_tab_url = NULL;
35 char	*default_search_engine = NULL;
36 
37 int autosave = 20;
38 int dont_wrap_pre = 0;
39 int emojify_link = 1;
40 int enable_colors = 1;
41 int fill_column = 120;
42 int fringe_ignore_offset = 1;
43 int hide_pre_blocks = 0;
44 int hide_pre_closing_line = 0;
45 int hide_pre_context = 0;
46 int load_url_use_heuristic = 1;
47 int max_killed_tabs = 10;
48 int olivetti_mode = 1;
49 int set_title = 1;
50 int tab_bar_show = 1;
51 
52 static struct line fringe_line = {
53 	.type = LINE_FRINGE,
54 };
55 struct vline fringe = {
56 	.parent = &fringe_line,
57 };
58 
59 struct lineprefix line_prefixes[] = {
60 	[LINE_TEXT] =		{ "",		"" },
61 	[LINE_LINK] =		{ "→ ",		"  " },
62 	[LINE_TITLE_1] =	{ "# ",		"  " },
63 	[LINE_TITLE_2] =	{ "## ",	"   " },
64 	[LINE_TITLE_3] =	{ "### ",	"    " },
65 	[LINE_ITEM] =		{ " • ",	"   " },
66 	[LINE_QUOTE] =		{ " ┃ ",	" ┃ " },
67 	[LINE_PRE_START] =	{ "─── ",	"    " },
68 	[LINE_PRE_CONTENT] =	{ "",		"" },
69 	[LINE_PRE_END] =	{ "─── ",	"" },
70 
71 	[LINE_PATCH] =		{"", ""},
72 	[LINE_PATCH_HDR] =	{"", ""},
73 	[LINE_PATCH_HUNK_HDR] =	{"", ""},
74 	[LINE_PATCH_ADD] =	{"", ""},
75 	[LINE_PATCH_DEL] =	{"", ""},
76 
77 	[LINE_COMPL] =		{"", ""},
78 	[LINE_COMPL_CURRENT] =	{"", ""},
79 
80 	[LINE_HELP] =		{"", ""},
81 
82 	[LINE_DOWNLOAD] =	{" Fetching ", "          "},
83 	[LINE_DOWNLOAD_DONE] =	{" Done     ", "          "},
84 	[LINE_DOWNLOAD_INFO] =	{" ", " "},
85 
86 	[LINE_FRINGE] =		{"~", ""},
87 };
88 
89 struct line_face line_faces[] = {
90 	[LINE_TEXT] =		{
91 		.prfx_pair = PT_PRFX,
92 		.pair = PT,
93 		.trail_pair = PT_TRAIL,
94 	},
95 	[LINE_LINK] =		{
96 		.prfx_pair = PL_PRFX,
97 		.pair = PL,
98 		.trail_pair = PL_TRAIL,
99 		.attr = A_UNDERLINE,
100 	},
101 	[LINE_TITLE_1] =	{
102 		.prfx_pair = PT1_PRFX,
103 		.pair = PT1,
104 		.trail_pair = PT1_TRAIL,
105 		.attr = A_BOLD,
106 	},
107 	[LINE_TITLE_2] =	{
108 		.prfx_pair = PT2_PRFX,
109 		.pair = PT2,
110 		.trail_pair = PT2_TRAIL,
111 		.attr = A_BOLD,
112 	},
113 	[LINE_TITLE_3] =	{
114 		.prfx_pair = PT3_PRFX,
115 		.pair = PT3,
116 		.trail_pair = PT3_TRAIL,
117 		.attr = A_BOLD,
118 	},
119 	[LINE_ITEM] =		{
120 		.prfx_pair = PI_PRFX,
121 		.pair = PI,
122 		.trail_pair = PI_TRAIL,
123 	},
124 	[LINE_QUOTE] =		{
125 		.prfx_pair = PQ_PRFX,
126 		.pair = PQ,
127 		.trail_pair = PQ_TRAIL,
128 		.attr = A_DIM,
129 	},
130 	[LINE_PRE_START] =	{
131 		.prfx_pair = PPSTART_PRFX,
132 		.pair = PPSTART,
133 		.trail_pair = PPSTART_TRAIL,
134 	},
135 	[LINE_PRE_CONTENT] =	{
136 		.prfx_pair = PP_PRFX,
137 		.pair = PP,
138 		.trail_pair = PP_TRAIL,
139 	},
140 	[LINE_PRE_END] =	{
141 		.prfx_pair = PPEND_PRFX,
142 		.pair = PPEND,
143 		.trail_pair = PPEND_TRAIL,
144 	},
145 
146 	/* text/x-patch */
147 	[LINE_PATCH] = {
148 		.prfx_pair = PPATCH_PRFX,
149 		.pair = PPATCH,
150 		.trail_pair = PPATCH_TRAIL,
151 	},
152 	[LINE_PATCH_HDR] = {
153 		.prfx_pair = PPATCH_HDR_PRFX,
154 		.pair = PPATCH_HDR,
155 		.trail_pair = PPATCH_HDR_TRAIL,
156 	},
157 	[LINE_PATCH_HUNK_HDR] = {
158 		.prfx_pair = PPATCH_HUNK_HDR_PRFX,
159 		.pair = PPATCH_HUNK_HDR,
160 		.trail_pair = PPATCH_HUNK_HDR_TRAIL,
161 	},
162 	[LINE_PATCH_ADD] = {
163 		.prfx_pair = PPATCH_ADD_PRFX,
164 		.pair = PPATCH_ADD,
165 		.trail_pair = PPATCH_ADD_TRAIL,
166 	},
167 	[LINE_PATCH_DEL] = {
168 		.prfx_pair = PPATCH_DEL_PRFX,
169 		.pair = PPATCH_DEL,
170 		.trail_pair = PPATCH_DEL_TRAIL,
171 	},
172 
173 	/* minibuffer */
174 	[LINE_COMPL] = {
175 		.prfx_pair = PCOMPL_PRFX,
176 		.pair = PCOMPL,
177 		.trail_pair = PCOMPL_TRAIL,
178 	},
179 	[LINE_COMPL_CURRENT] = {
180 		.prfx_pair = PCOMPL_CURR_PRFX,
181 		.pair = PCOMPL_CURR,
182 		.trail_pair = PCOMPL_CURR_TRAIL,
183 		.attr = A_REVERSE,
184 		.trail_attr = A_REVERSE,
185 	},
186 
187 	/* help */
188 	[LINE_HELP] = {
189 		.prfx_pair = PHELP_PRFX,
190 		.pair = PHELP,
191 		.trail_pair = PHELP_TRAIL,
192 	},
193 
194 	/* download */
195 	[LINE_DOWNLOAD] = {
196 		.prfx_pair = PDOWNLOAD_PRFX,
197 		.pair = PDOWNLOAD,
198 		.trail_pair = PDOWNLOAD_TRAIL
199 	},
200 	[LINE_DOWNLOAD_DONE] = {
201 		.prfx_pair = PDOWNLOAD_DONE_PRFX,
202 		.pair = PDOWNLOAD_DONE,
203 		.trail_pair = PDOWNLOAD_DONE_TRAIL
204 	},
205 	[LINE_DOWNLOAD_INFO] = {
206 		.prfx_pair = PDOWNLOAD_INFO_PRFX,
207 		.pair = PDOWNLOAD_INFO,
208 		.trail_pair = PDOWNLOAD_INFO_TRAIL
209 	},
210 
211 	/* misc ui */
212 	[LINE_FRINGE] = {
213 		.prfx_pair = PFRINGE_PRFX,
214 		.pair = PFRINGE,
215 		.trail_pair = PFRINGE_TRAIL,
216 	}
217 };
218 
219 struct tab_face tab_face = {
220 	.bg_attr = A_REVERSE, .bg_bg = -1, .bg_fg = -1,
221 	.t_attr  = A_REVERSE, .t_bg  = -1, .t_fg  = -1,
222 	.c_attr  = A_NORMAL,  .c_bg  = -1, .c_fg  = -1,
223 
224 	/*
225 	 * set these so that even when enable-color=0 the bar has some
226 	 * sane defaults.
227 	 */
228 	.background =	A_REVERSE,
229 	.tab =		A_REVERSE,
230 	.current =	A_NORMAL,
231 };
232 
233 struct body_face body_face = {
234 	.lbg = -1, .lfg = -1,
235 	.bg  = -1, .fg  = -1,
236 	.rbg = -1, .rfg = -1,
237 };
238 
239 struct download_face download_face = {
240 	.bg = -1,
241 	.fg = -1,
242 	.attr = A_NORMAL,
243 };
244 
245 struct modeline_face modeline_face = {
246 	.bg  = -1,
247 	.fg  = -1,
248 	.attr = A_REVERSE,
249 };
250 
251 struct minibuffer_face minibuffer_face = {
252 	.bg = -1,
253 	.fg = -1,
254 	.attr = A_NORMAL,
255 };
256 
257 struct mapping {
258 	const char	*label;
259 	int		 linetype;
260 } mappings[] = {
261 	{"text",	LINE_TEXT},
262 	{"link",	LINE_LINK},
263 	{"title1",	LINE_TITLE_1},
264 	{"title2",	LINE_TITLE_2},
265 	{"title3",	LINE_TITLE_3},
266 	{"item",	LINE_ITEM},
267 	{"quote",	LINE_QUOTE},
268 	{"pre.start",	LINE_PRE_START},
269 	{"pre",		LINE_PRE_CONTENT},
270 	{"pre.end",	LINE_PRE_END},
271 
272 	/* text/x-patch */
273 	{"patch",	LINE_PATCH},
274 	{"patch.hdr",	LINE_PATCH_HDR},
275 	{"patch.hunk",	LINE_PATCH_HUNK_HDR},
276 	{"patch.add",	LINE_PATCH_ADD},
277 	{"patch.del",	LINE_PATCH_DEL},
278 
279 	/* minibuffer */
280 	{"compl",	LINE_COMPL},
281 	{"compl.current", LINE_COMPL_CURRENT},
282 
283 	/* help */
284 	{"help",	LINE_HELP},
285 
286 	/* download */
287 	{"download.ongoing",	LINE_DOWNLOAD},
288 	{"download.done",	LINE_DOWNLOAD_DONE},
289 	{"download.info",	LINE_DOWNLOAD_INFO},
290 
291 	/* misc ui */
292 	{"fringe",		LINE_FRINGE},
293 };
294 
295 static struct mapping *
296 mapping_by_name(const char *name)
297 {
298 	size_t i;
299 
300 	for (i = 0; i < sizeof(mappings)/sizeof(mappings[0]); ++i) {
301 		if (!strcmp(name, mappings[i].label))
302 			return &mappings[i];
303 	}
304 
305 	return NULL;
306 }
307 
308 static inline void
309 global_set_key(const char *key, void (*fn)(struct buffer*))
310 {
311 	if (!kmap_define_key(&global_map, key, fn))
312 		_exit(1);
313 }
314 
315 static inline void
316 minibuffer_set_key(const char *key, void (*fn)(struct buffer*))
317 {
318 	if (!kmap_define_key(&minibuffer_map, key, fn))
319 		_exit(1);
320 }
321 
322 static void
323 load_default_keys(void)
324 {
325 	/* === global map === */
326 
327 	/* emacs */
328 	global_set_key("C-p",		cmd_previous_line);
329 	global_set_key("C-n",		cmd_next_line);
330 	global_set_key("C-f",		cmd_forward_char);
331 	global_set_key("C-b",		cmd_backward_char);
332 	global_set_key("M-{",		cmd_backward_paragraph);
333 	global_set_key("M-}",		cmd_forward_paragraph);
334 	global_set_key("C-a",		cmd_move_beginning_of_line);
335 	global_set_key("C-e",		cmd_move_end_of_line);
336 
337 	global_set_key("M-v",		cmd_scroll_up);
338 	global_set_key("C-v",		cmd_scroll_down);
339 	global_set_key("M-space",	cmd_scroll_up);
340 	global_set_key("space",		cmd_scroll_down);
341 
342 	global_set_key("M-<",		cmd_beginning_of_buffer);
343 	global_set_key("M->",		cmd_end_of_buffer);
344 
345 	global_set_key("C-x C-c",	cmd_kill_telescope);
346 	global_set_key("C-x C-w",	cmd_write_buffer);
347 
348 	global_set_key("C-g",		cmd_clear_minibuf);
349 
350 	global_set_key("M-x",		cmd_execute_extended_command);
351 
352 	global_set_key("C-c {",		cmd_dec_fill_column);
353 	global_set_key("C-c }",		cmd_inc_fill_column);
354 
355 	global_set_key("C-c p",		cmd_previous_heading);
356 	global_set_key("C-c n",		cmd_next_heading);
357 
358 	global_set_key(">",		cmd_load_url);
359 	global_set_key("<",		cmd_load_current_url);
360 	global_set_key("C-x C-f",	cmd_load_url);
361 	global_set_key("C-x M-f",	cmd_load_current_url);
362 
363 	global_set_key("C-x o",		cmd_other_window);
364 
365 	global_set_key("C-x t 0",	cmd_tab_close);
366 	global_set_key("C-x t 1",	cmd_tab_close_other);
367 	global_set_key("C-x t 2",	cmd_tab_new);
368 	global_set_key("C-x t o",	cmd_tab_next);
369 	global_set_key("C-x t O",	cmd_tab_previous);
370 	global_set_key("C-x t m",	cmd_tab_move);
371 	global_set_key("C-x t M",	cmd_tab_move_to);
372 
373 	global_set_key("B",		cmd_previous_page);
374 	global_set_key("C-M-b",		cmd_previous_page);
375 	global_set_key("F",		cmd_next_page);
376 	global_set_key("C-M-f",		cmd_next_page);
377 
378 	global_set_key("<f7> a",	cmd_bookmark_page);
379 	global_set_key("<f7> <f7>",	cmd_list_bookmarks);
380 
381 	global_set_key("C-z",		cmd_suspend_telescope);
382 
383 	/* vi/vi-like */
384 	global_set_key("k",		cmd_previous_line);
385 	global_set_key("j",		cmd_next_line);
386 	global_set_key("l",		cmd_forward_char);
387 	global_set_key("h",		cmd_backward_char);
388 	global_set_key("{",		cmd_backward_paragraph);
389 	global_set_key("}",		cmd_forward_paragraph);
390 	global_set_key("^",		cmd_move_beginning_of_line);
391 	global_set_key("$",		cmd_move_end_of_line);
392 
393 	global_set_key("K",		cmd_scroll_line_up);
394 	global_set_key("J",		cmd_scroll_line_down);
395 
396 	global_set_key("g g",		cmd_beginning_of_buffer);
397 	global_set_key("G",		cmd_end_of_buffer);
398 
399 	global_set_key("g u",		cmd_up);
400 	global_set_key("g r",		cmd_root);
401 	global_set_key("g h",		cmd_home);
402 	global_set_key("g D",		cmd_tab_close);
403 	global_set_key("g N",		cmd_tab_new);
404 	global_set_key("g t",		cmd_tab_next);
405 	global_set_key("g T",		cmd_tab_previous);
406 	global_set_key("g M-t",		cmd_tab_move);
407 	global_set_key("g M-T",		cmd_tab_move_to);
408 
409 	global_set_key("H",		cmd_previous_page);
410 	global_set_key("L",		cmd_next_page);
411 
412 	global_set_key("u",		cmd_tab_undo_close);
413 
414 	/* tmp */
415 	global_set_key("q",		cmd_kill_telescope);
416 
417 	global_set_key("esc",		cmd_clear_minibuf);
418 
419 	global_set_key(":",		cmd_execute_extended_command);
420 
421 	/* cua */
422 	global_set_key("<up>",		cmd_previous_line);
423 	global_set_key("<down>",	cmd_next_line);
424 	global_set_key("<right>",	cmd_forward_char);
425 	global_set_key("<left>",	cmd_backward_char);
426 	global_set_key("<home>",	cmd_move_beginning_of_line);
427 	global_set_key("<end>",		cmd_move_end_of_line);
428 	global_set_key("<prior>",	cmd_scroll_up);
429 	global_set_key("<next>",	cmd_scroll_down);
430 
431 	global_set_key("C-w",		cmd_tab_close);
432 	global_set_key("C-t",		cmd_tab_new);
433 	global_set_key("M-<prior>",	cmd_tab_previous);
434 	global_set_key("M-<next>",	cmd_tab_next);
435 
436 	global_set_key("del",		cmd_previous_page);
437 	global_set_key("M-<left>",	cmd_previous_page);
438 	global_set_key("M-<right>",	cmd_next_page);
439 
440 	global_set_key("<f5>",		cmd_reload_page);
441 	global_set_key("r",		cmd_reload_page);
442 
443 	/* "ncurses standard" */
444 	global_set_key("C-l",		cmd_redraw);
445 
446 	/* global */
447 	global_set_key("<f1>",		cmd_toggle_help);
448 	global_set_key("<f2>",		cmd_toggle_downloads);
449 	global_set_key("C-m",		cmd_push_button);
450 	global_set_key("M-enter",	cmd_push_button_new_tab);
451 	global_set_key("M-tab",		cmd_previous_button);
452 	global_set_key("backtab",	cmd_previous_button);
453 	global_set_key("tab",		cmd_next_button);
454 	global_set_key("M-t",		cmd_tab_select);
455 	global_set_key("[",		cmd_tab_previous);
456 	global_set_key("]",		cmd_tab_next);
457 	global_set_key("M-[",		cmd_tab_move_to);
458 	global_set_key("M-]",		cmd_tab_move);
459 	global_set_key("M-l",		cmd_link_select);
460 	global_set_key("M-/",		cmd_swiper);
461 	global_set_key("t",		cmd_toc);
462 	global_set_key("M-r",		cmd_reply_last_input);
463 	global_set_key("s",		cmd_search);
464 
465 	/* === minibuffer map === */
466 	minibuffer_set_key("ret",	cmd_mini_complete_and_exit);
467 	minibuffer_set_key("C-g",	cmd_mini_abort);
468 	minibuffer_set_key("esc",	cmd_mini_abort);
469 	minibuffer_set_key("C-d",	cmd_mini_delete_char);
470 	minibuffer_set_key("del",	cmd_mini_delete_backward_char);
471 	minibuffer_set_key("backspace",	cmd_mini_delete_backward_char);
472 	minibuffer_set_key("C-h",	cmd_mini_delete_backward_char);
473 
474 	minibuffer_set_key("C-b",	cmd_backward_char);
475 	minibuffer_set_key("C-f",	cmd_forward_char);
476 	minibuffer_set_key("<left>",	cmd_backward_char);
477 	minibuffer_set_key("<right>",	cmd_forward_char);
478 	minibuffer_set_key("C-e",	cmd_move_end_of_line);
479 	minibuffer_set_key("C-a",	cmd_move_beginning_of_line);
480 	minibuffer_set_key("<end>",	cmd_move_end_of_line);
481 	minibuffer_set_key("<home>",	cmd_move_beginning_of_line);
482 	minibuffer_set_key("C-k",	cmd_mini_kill_line);
483 	minibuffer_set_key("C-u",	cmd_mini_kill_whole_line);
484 
485 	minibuffer_set_key("M-p",	cmd_mini_previous_history_element);
486 	minibuffer_set_key("M-n",	cmd_mini_next_history_element);
487 
488 	minibuffer_set_key("C-p",	cmd_previous_completion);
489 	minibuffer_set_key("C-n",	cmd_next_completion);
490 	minibuffer_set_key("<up>",	cmd_previous_completion);
491 	minibuffer_set_key("<down>",	cmd_next_completion);
492 
493 	minibuffer_set_key("C-v",	cmd_mini_scroll_down);
494 	minibuffer_set_key("M-v",	cmd_mini_scroll_up);
495 	minibuffer_set_key("<next>",	cmd_mini_scroll_down);
496 	minibuffer_set_key("<prior>",	cmd_mini_scroll_up);
497 
498 	minibuffer_set_key("M-<",	cmd_mini_goto_beginning);
499 	minibuffer_set_key("M->",	cmd_mini_goto_end);
500 
501 	minibuffer_set_key("tab",	cmd_insert_current_candidate);
502 }
503 
504 void
505 config_init(void)
506 {
507 	struct line_face *f;
508 	size_t i, len;
509 
510 	default_search_engine = strdup("gemini://geminispace.info/search");
511 	if (default_search_engine == NULL)
512 		err(1, "strdup");
513 
514 	len = sizeof(line_faces)/sizeof(line_faces[0]);
515 	for (i = 0; i < len; ++i) {
516 		f = &line_faces[i];
517 
518 		f->prfx_bg = f->bg = f->trail_bg = -1;
519 		f->prfx_fg = f->fg = f->trail_fg = -1;
520 	}
521 
522 	line_faces[LINE_LINK].fg = COLOR_BLUE;
523 	line_faces[LINE_PATCH_ADD].fg = COLOR_CYAN;
524 	line_faces[LINE_PATCH_DEL].fg = COLOR_MAGENTA;
525 
526 	load_default_keys();
527 }
528 
529 int
530 config_setprfx(const char *name, const char *prfx, const char *cont)
531 {
532 	struct lineprefix *p;
533 	struct mapping *m;
534 
535 	if (strncmp(name, "line.", 5) != 0)
536 		return 0;
537 	name += 5;
538 
539 	if ((m = mapping_by_name(name)) == NULL)
540 		return 0;
541 
542 	p = &line_prefixes[m->linetype];
543 	p->prfx1 = prfx;
544 	p->prfx2 = cont;
545 
546 	return 1;
547 }
548 
549 int
550 config_setvari(const char *var, int val)
551 {
552 	if (!strcmp(var, "autosave")) {
553 		autosave = val;
554 	} else if (!strcmp(var, "fill-column")) {
555 		if ((fill_column = val) <= 0)
556 			fill_column = INT_MAX;
557 	} else if (!strcmp(var, "max-killed-tabs")) {
558 		if (val >= 0)
559 			max_killed_tabs = MIN(val, 128);
560 	} else if (!strcmp(var, "tab-bar-show")) {
561 		if (val < 0)
562 			tab_bar_show = -1;
563 		else if (val == 0)
564 			tab_bar_show = 0;
565 		else
566 			tab_bar_show = 1;
567 	} else {
568 		return 0;
569 	}
570 
571 	return 1;
572 }
573 
574 int
575 config_setvars(const char *var, char *val)
576 {
577 	if (!strcmp(var, "default-protocol")) {
578 		if (strcmp(val, "finger") &&
579 		    strcmp(val, "gopher") &&
580 		    strcmp(val, "gemini"))
581 			return 0;
582 
583 		free(default_protocol);
584 		default_protocol = val;
585 		return 1;
586 	}
587 
588 	if (!strcmp(var, "default-search-engine")) {
589 		if (strncmp(val, "gemini://", 9) != 0 &&
590 		    strncmp(val, "gopher://", 9) != 0)
591 			return 0;
592 
593 		free(default_search_engine);
594 		default_search_engine = val;
595 		return 1;
596 	}
597 
598 	if (!strcmp(var, "download-path")) {
599 		const char *prfx = "", *v = val, *sufx = "";
600 
601 		if (!strncmp(val, "~/", 2) &&
602 		    v++ &&
603 		    (prfx = getenv("HOME")) == NULL)
604 			return 0;
605 
606 		if (!has_suffix(val, "/"))
607 			sufx = "/";
608 
609 		free(download_path);
610 		if (asprintf(&download_path, "%s%s%s", prfx, v, sufx) == -1) {
611 			download_path = NULL;
612 			return 0;
613 		}
614 
615 		free(val);
616 		return 1;
617 	}
618 
619 	if (!strcmp(var, "new-tab-url")) {
620 		free(new_tab_url);
621 		new_tab_url = val;
622 		return 1;
623 	}
624 
625 	return 0;
626 }
627 
628 int
629 config_setvarb(const char *var, int val) {
630 	val = !!val;
631 
632 	if (!strcmp(var, "dont-wrap-pre")) {
633 		dont_wrap_pre = val;
634 		return 1;
635 	}
636 
637 	if (!strcmp(var, "emojify-link")) {
638 		emojify_link = val;
639 		return 1;
640 	}
641 
642 	if (!strcmp(var, "enable-colors")) {
643 		enable_colors = val;
644 		return 1;
645 	}
646 
647 	if (!strcmp(var, "fringe-ignore-offset")) {
648 		fringe_ignore_offset = val;
649 		return 1;
650 	}
651 
652 	if (!strcmp(var, "hide-pre-blocks")) {
653 		hide_pre_blocks = val;
654 		return 1;
655 	}
656 
657 	if (!strcmp(var, "hide-pre-closing-line")) {
658 		hide_pre_closing_line = val;
659 		return 1;
660 	}
661 
662 	if (!strcmp(var, "hide-pre-context")) {
663 		hide_pre_context = val;
664 		return 1;
665 	}
666 
667 	if (!strcmp(var, "load-url-use-heuristic")) {
668 		load_url_use_heuristic = val;
669 		return 1;
670 	}
671 
672 	if (!strcmp(var, "olivetti-mode")) {
673 		olivetti_mode = val;
674 		return 1;
675 	}
676 
677 	if (!strcmp(var, "update-title") ||
678 	    !strcmp(var, "set-title")) {
679 		set_title = val;
680 		return 1;
681 	}
682 
683 	return 0;
684 }
685 
686 int
687 config_setcolor(int bg, const char *name, int prfx, int line, int trail)
688 {
689 	struct mapping *m;
690 	struct line_face *f;
691 
692 	if (!strcmp(name, "tabline")) {
693 		if (bg)
694 			tab_face.bg_bg = prfx;
695 		else
696 			tab_face.bg_fg = prfx;
697 	} else if (!strncmp(name, "tabline.", 8)) {
698 		name += 8;
699 
700 		if (!strcmp(name, "tab")) {
701 			if (bg)
702 				tab_face.t_bg = prfx;
703 			else
704 				tab_face.t_fg = prfx;
705 		} else if (!strcmp(name, "current")) {
706 			if (bg)
707 				tab_face.c_bg = prfx;
708 			else
709 				tab_face.c_fg = prfx;
710 		} else
711 			return 0;
712 	} else if (!strncmp(name, "line.", 5)) {
713 		name += 5;
714 
715 		if ((m = mapping_by_name(name)) == NULL)
716 			return 0;
717 
718 		f = &line_faces[m->linetype];
719 
720 		if (bg) {
721 			f->prfx_bg = prfx;
722 			f->bg = line;
723 			f->trail_bg = trail;
724 		} else {
725 			f->prfx_fg = prfx;
726 			f->fg = line;
727 			f->trail_fg = trail;
728 		}
729 	} else if (!strcmp(name, "line")) {
730 		if (bg) {
731 			body_face.lbg = prfx;
732 			body_face.bg  = line;
733 			body_face.rbg = trail;
734 		} else {
735 			body_face.lfg = prfx;
736 			body_face.fg = line;
737 			body_face.rfg = trail;
738 		}
739 	} else if (!strcmp(name, "download")) {
740 		if (bg)
741 			download_face.bg = prfx;
742 		else
743 			download_face.fg = prfx;
744 	} else if (!strcmp(name, "minibuffer")) {
745 		if (bg)
746 			minibuffer_face.bg = prfx;
747 		else
748 			minibuffer_face.fg = prfx;
749 	} else if (!strcmp(name, "modeline")) {
750 		if (bg)
751 			modeline_face.bg = prfx;
752 		else
753 			modeline_face.fg = prfx;
754 	} else {
755 		return 0;
756 	}
757 
758 	return 1;
759 }
760 
761 int
762 config_setattr(const char *name, int prfx, int line, int trail)
763 {
764 	struct mapping *m;
765 	struct line_face *f;
766 
767 	if (!strcmp(name, "tabline")) {
768 		tab_face.bg_attr = prfx;
769 	} else if (!strncmp(name, "tabline.", 8)) {
770 		name += 8;
771 
772 		if (!strcmp(name, "tab"))
773 			tab_face.t_attr = prfx;
774 		else if (!strcmp(name, "current"))
775 			tab_face.c_attr = prfx;
776 		else
777 			return 0;
778 	} else if (!strncmp(name, "line.", 5)) {
779 		name += 5;
780 
781 		if ((m = mapping_by_name(name)) == NULL)
782 			return 0;
783 
784 		f = &line_faces[m->linetype];
785 
786 		f->prfx_attr = prfx;
787 		f->attr = line;
788 		f->trail_attr = trail;
789 	} else if (!strcmp(name, "download")) {
790 		download_face.attr = prfx;
791 	} else if (!strcmp(name, "minibuffer")) {
792 		minibuffer_face.attr = prfx;
793 	} else if (!strcmp(name, "modeline")) {
794 		modeline_face.attr = prfx;
795 	} else {
796 		return 0;
797 	}
798 
799 	return 1;
800 }
801 
802 static inline void
803 tl_init_pair(int colors, int pair, int f, int b)
804 {
805 	if (f >= colors || !enable_colors)
806 		f = -1;
807 	if (b >= colors || !enable_colors)
808 		b = -1;
809 	init_pair(pair, f, b);
810 }
811 
812 void
813 config_apply_style(void)
814 {
815 	size_t i, colors, len;
816 	struct line_face *f;
817 
818 	colors = COLORS;
819 
820 	len = sizeof(line_faces)/sizeof(line_faces[0]);
821 	for (i = 0; i < len; ++i) {
822 		f = &line_faces[i];
823 
824 		tl_init_pair(colors, f->prfx_pair, f->prfx_fg, f->prfx_bg);
825 		f->prefix = COLOR_PAIR(f->prfx_pair) | f->prfx_attr;
826 
827 		tl_init_pair(colors, f->pair, f->fg, f->bg);
828 		f->text = COLOR_PAIR(f->pair) | f->attr;
829 
830 		tl_init_pair(colors, f->trail_pair, f->trail_fg, f->trail_bg);
831 		f->trail = COLOR_PAIR(f->trail_pair) | f->trail_attr;
832 	}
833 
834 	/* tab line */
835 	tl_init_pair(colors, PTL_BG, tab_face.bg_fg, tab_face.bg_bg);
836 	tab_face.background = COLOR_PAIR(PTL_BG) | tab_face.bg_attr;
837 
838 	tl_init_pair(colors, PTL_TAB, tab_face.t_fg, tab_face.t_bg);
839 	tab_face.tab = COLOR_PAIR(PTL_TAB) | tab_face.t_attr;
840 
841 	tl_init_pair(colors, PTL_CURR, tab_face.c_fg, tab_face.c_bg);
842 	tab_face.current = COLOR_PAIR(PTL_CURR) | tab_face.c_attr;
843 
844 	/* body */
845 	tl_init_pair(colors, PBODY, body_face.fg, body_face.bg);
846 	body_face.body = COLOR_PAIR(PBODY);
847 
848 	tl_init_pair(colors, PBLEFT, body_face.lfg, body_face.lbg);
849 	body_face.left = COLOR_PAIR(PBLEFT);
850 
851 	tl_init_pair(colors, PBRIGHT, body_face.rfg, body_face.rbg);
852 	body_face.right = COLOR_PAIR(PBRIGHT);
853 
854 	/* download */
855 	tl_init_pair(colors, PDOWNLOAD_WIN, download_face.fg, download_face.bg);
856 	download_face.background = COLOR_PAIR(PDOWNLOAD_WIN) | download_face.attr;
857 
858 	/* modeline */
859 	tl_init_pair(colors, PMODELINE, modeline_face.fg, modeline_face.bg);
860 	modeline_face.background = COLOR_PAIR(PMODELINE) | modeline_face.attr;
861 
862 	/* minibuffer */
863 	tl_init_pair(colors, PMINIBUF, minibuffer_face.fg, minibuffer_face.bg);
864 	minibuffer_face.background = COLOR_PAIR(PMINIBUF) | minibuffer_face.attr;
865 
866 }