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Date:: Mon Jan 10 15:04:15 2022 UTC
Message:: add vi-like `~' fringes after the end of the buffers
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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	*download_path = NULL;
30 char	*new_tab_url = NULL;
31 
32 int autosave = 20;
33 int dont_wrap_pre = 0;
34 int emojify_link = 1;
35 int enable_colors = 1;
36 int fill_column = 120;
37 int hide_pre_blocks = 0;
38 int hide_pre_closing_line = 0;
39 int hide_pre_context = 0;
40 int max_killed_tabs = 10;
41 int olivetti_mode = 1;
42 int set_title = 1;
43 int tab_bar_show = 1;
44 
45 static struct line fringe_line = {
46 	.type = LINE_FRINGE,
47 };
48 struct vline fringe = {
49 	/*
50 	 * This is a special vline, it won't ever be free'd, as it's
51 	 * only "virtual" for the UI, it's never added to a buffer.
52 	 */
53 	.line = (char *)"",
54 	.parent = &fringe_line,
55 };
56 
57 struct lineprefix line_prefixes[] = {
58 	[LINE_TEXT] =		{ "",		"" },
59 	[LINE_LINK] =		{ "→ ",	"  " },
60 	[LINE_TITLE_1] =	{ "# ",		"  " },
61 	[LINE_TITLE_2] =	{ "## ",	"   " },
62 	[LINE_TITLE_3] =	{ "### ",	"    " },
63 	[LINE_ITEM] =		{ " • ",	"   " },
64 	[LINE_QUOTE] =		{ " ┃ ",	" ┃ " },
65 	[LINE_PRE_START] =	{ "─── ",	"    " },
66 	[LINE_PRE_CONTENT] =	{ "",		"" },
67 	[LINE_PRE_END] =	{ "─── ",	"" },
68 
69 	[LINE_PATCH] =		{"", ""},
70 	[LINE_PATCH_HDR] =	{"", ""},
71 	[LINE_PATCH_HUNK_HDR] =	{"", ""},
72 	[LINE_PATCH_ADD] =	{"", ""},
73 	[LINE_PATCH_DEL] =	{"", ""},
74 
75 	[LINE_COMPL] =		{"", ""},
76 	[LINE_COMPL_CURRENT] =	{"", ""},
77 
78 	[LINE_HELP] =		{"", ""},
79 
80 	[LINE_DOWNLOAD] =	{" Fetching ", "          "},
81 	[LINE_DOWNLOAD_DONE] =	{" Done     ", "          "},
82 	[LINE_DOWNLOAD_INFO] =	{" ", " "},
83 
84 	[LINE_FRINGE] =		{"", ""},
85 };
86 
87 struct line_face line_faces[] = {
88 	[LINE_TEXT] =		{
89 		.prfx_pair = PT_PRFX,
90 		.pair = PT,
91 		.trail_pair = PT_TRAIL,
92 	},
93 	[LINE_LINK] =		{
94 		.prfx_pair = PL_PRFX,
95 		.pair = PL,
96 		.trail_pair = PL_TRAIL,
97 		.attr = A_UNDERLINE,
98 	},
99 	[LINE_TITLE_1] =	{
100 		.prfx_pair = PT1_PRFX,
101 		.pair = PT1,
102 		.trail_pair = PT1_TRAIL,
103 		.attr = A_BOLD,
104 	},
105 	[LINE_TITLE_2] =	{
106 		.prfx_pair = PT2_PRFX,
107 		.pair = PT2,
108 		.trail_pair = PT2_TRAIL,
109 		.attr = A_BOLD,
110 	},
111 	[LINE_TITLE_3] =	{
112 		.prfx_pair = PT3_PRFX,
113 		.pair = PT3,
114 		.trail_pair = PT3_TRAIL,
115 		.attr = A_BOLD,
116 	},
117 	[LINE_ITEM] =		{
118 		.prfx_pair = PI_PRFX,
119 		.pair = PI,
120 		.trail_pair = PI_TRAIL,
121 	},
122 	[LINE_QUOTE] =		{
123 		.prfx_pair = PQ_PRFX,
124 		.pair = PQ,
125 		.trail_pair = PQ_TRAIL,
126 		.attr = A_DIM,
127 	},
128 	[LINE_PRE_START] =	{
129 		.prfx_pair = PPSTART_PRFX,
130 		.pair = PPSTART,
131 		.trail_pair = PPSTART_TRAIL,
132 	},
133 	[LINE_PRE_CONTENT] =	{
134 		.prfx_pair = PP_PRFX,
135 		.pair = PP,
136 		.trail_pair = PP_TRAIL,
137 	},
138 	[LINE_PRE_END] =	{
139 		.prfx_pair = PPEND_PRFX,
140 		.pair = PPEND,
141 		.trail_pair = PPEND_TRAIL,
142 	},
143 
144 	/* text/x-patch */
145 	[LINE_PATCH] = {
146 		.prfx_pair = PPATCH_PRFX,
147 		.pair = PPATCH,
148 		.trail_pair = PPATCH_TRAIL,
149 	},
150 	[LINE_PATCH_HDR] = {
151 		.prfx_pair = PPATCH_HDR_PRFX,
152 		.pair = PPATCH_HDR,
153 		.trail_pair = PPATCH_HDR_TRAIL,
154 	},
155 	[LINE_PATCH_HUNK_HDR] = {
156 		.prfx_pair = PPATCH_HUNK_HDR_PRFX,
157 		.pair = PPATCH_HUNK_HDR,
158 		.trail_pair = PPATCH_HUNK_HDR_TRAIL,
159 	},
160 	[LINE_PATCH_ADD] = {
161 		.prfx_pair = PPATCH_ADD_PRFX,
162 		.pair = PPATCH_ADD,
163 		.trail_pair = PPATCH_ADD_TRAIL,
164 	},
165 	[LINE_PATCH_DEL] = {
166 		.prfx_pair = PPATCH_DEL_PRFX,
167 		.pair = PPATCH_DEL,
168 		.trail_pair = PPATCH_DEL_TRAIL,
169 	},
170 
171 	/* minibuffer */
172 	[LINE_COMPL] = {
173 		.prfx_pair = PCOMPL_PRFX,
174 		.pair = PCOMPL,
175 		.trail_pair = PCOMPL_TRAIL,
176 	},
177 	[LINE_COMPL_CURRENT] = {
178 		.prfx_pair = PCOMPL_CURR_PRFX,
179 		.pair = PCOMPL_CURR,
180 		.trail_pair = PCOMPL_CURR_TRAIL,
181 		.attr = A_REVERSE,
182 		.trail_attr = A_REVERSE,
183 	},
184 
185 	/* help */
186 	[LINE_HELP] = {
187 		.prfx_pair = PHELP_PRFX,
188 		.pair = PHELP,
189 		.trail_pair = PHELP_TRAIL,
190 	},
191 
192 	/* download */
193 	[LINE_DOWNLOAD] = {
194 		.prfx_pair = PDOWNLOAD_PRFX,
195 		.pair = PDOWNLOAD,
196 		.trail_pair = PDOWNLOAD_TRAIL
197 	},
198 	[LINE_DOWNLOAD_DONE] = {
199 		.prfx_pair = PDOWNLOAD_DONE_PRFX,
200 		.pair = PDOWNLOAD_DONE,
201 		.trail_pair = PDOWNLOAD_DONE_TRAIL
202 	},
203 	[LINE_DOWNLOAD_INFO] = {
204 		.prfx_pair = PDOWNLOAD_INFO_PRFX,
205 		.pair = PDOWNLOAD_INFO,
206 		.trail_pair = PDOWNLOAD_INFO_TRAIL
207 	},
208 
209 	/* misc ui */
210 	[LINE_FRINGE] = {
211 		.prfx_pair = PFRINGE,
212 		.pair = PFRINGE,
213 		.trail_pair = PFRINGE_TRAIL,
214 	}
215 };
216 
217 struct tab_face tab_face = {
218 	.bg_attr = A_REVERSE, .bg_bg = -1, .bg_fg = -1,
219 	.t_attr  = A_REVERSE, .t_bg  = -1, .t_fg  = -1,
220 	.c_attr  = A_NORMAL,  .c_bg  = -1, .c_fg  = -1,
221 
222 	/*
223 	 * set these so that even when enable-color=0 the bar has some
224 	 * sane defaults.
225 	 */
226 	.background =	A_REVERSE,
227 	.tab =		A_REVERSE,
228 	.current =	A_NORMAL,
229 };
230 
231 struct body_face body_face = {
232 	.lbg = -1, .lfg = -1,
233 	.bg  = -1, .fg  = -1,
234 	.rbg = -1, .rfg = -1,
235 };
236 
237 struct download_face download_face = {
238 	.bg = -1,
239 	.fg = -1,
240 	.attr = A_NORMAL,
241 };
242 
243 struct modeline_face modeline_face = {
244 	.bg  = -1,
245 	.fg  = -1,
246 	.attr = A_REVERSE,
247 };
248 
249 struct minibuffer_face minibuffer_face = {
250 	.bg = -1,
251 	.fg = -1,
252 	.attr = A_NORMAL,
253 };
254 
255 struct mapping {
256 	const char	*label;
257 	int		 linetype;
258 } mappings[] = {
259 	{"text",	LINE_TEXT},
260 	{"link",	LINE_LINK},
261 	{"title1",	LINE_TITLE_1},
262 	{"title2",	LINE_TITLE_2},
263 	{"title3",	LINE_TITLE_3},
264 	{"item",	LINE_ITEM},
265 	{"quote",	LINE_QUOTE},
266 	{"pre.start",	LINE_PRE_START},
267 	{"pre",		LINE_PRE_CONTENT},
268 	{"pre.end",	LINE_PRE_END},
269 
270 	/* text/x-patch */
271 	{"patch",	LINE_PATCH},
272 	{"patch.hdr",	LINE_PATCH_HDR},
273 	{"patch.hunk",	LINE_PATCH_HUNK_HDR},
274 	{"patch.add",	LINE_PATCH_ADD},
275 	{"patch.del",	LINE_PATCH_DEL},
276 
277 	/* minibuffer */
278 	{"compl",	LINE_COMPL},
279 	{"compl.current", LINE_COMPL_CURRENT},
280 
281 	/* help */
282 	{"help",	LINE_HELP},
283 
284 	/* download */
285 	{"download.ongoing",	LINE_DOWNLOAD},
286 	{"download.done",	LINE_DOWNLOAD_DONE},
287 	{"download.info",	LINE_DOWNLOAD_INFO},
288 
289 	/* misc ui */
290 	{"fringe",		LINE_FRINGE},
291 };
292 
293 static struct mapping *
294 mapping_by_name(const char *name)
295 {
296 	size_t i;
297 
298 	for (i = 0; i < sizeof(mappings)/sizeof(mappings[0]); ++i) {
299 		if (!strcmp(name, mappings[i].label))
300 			return &mappings[i];
301 	}
302 
303 	return NULL;
304 }
305 
306 static inline void
307 global_set_key(const char *key, void (*fn)(struct buffer*))
308 {
309 	if (!kmap_define_key(&global_map, key, fn))
310 		_exit(1);
311 }
312 
313 static inline void
314 minibuffer_set_key(const char *key, void (*fn)(struct buffer*))
315 {
316 	if (!kmap_define_key(&minibuffer_map, key, fn))
317 		_exit(1);
318 }
319 
320 static void
321 load_default_keys(void)
322 {
323 	/* === global map === */
324 
325 	/* emacs */
326 	global_set_key("C-p",		cmd_previous_line);
327 	global_set_key("C-n",		cmd_next_line);
328 	global_set_key("C-f",		cmd_forward_char);
329 	global_set_key("C-b",		cmd_backward_char);
330 	global_set_key("M-{",		cmd_backward_paragraph);
331 	global_set_key("M-}",		cmd_forward_paragraph);
332 	global_set_key("C-a",		cmd_move_beginning_of_line);
333 	global_set_key("C-e",		cmd_move_end_of_line);
334 
335 	global_set_key("M-v",		cmd_scroll_up);
336 	global_set_key("C-v",		cmd_scroll_down);
337 	global_set_key("M-space",	cmd_scroll_up);
338 	global_set_key("space",		cmd_scroll_down);
339 
340 	global_set_key("M-<",		cmd_beginning_of_buffer);
341 	global_set_key("M->",		cmd_end_of_buffer);
342 
343 	global_set_key("C-x C-c",	cmd_kill_telescope);
344 
345 	global_set_key("C-g",		cmd_clear_minibuf);
346 
347 	global_set_key("M-x",		cmd_execute_extended_command);
348 
349 	global_set_key("C-c {",		cmd_dec_fill_column);
350 	global_set_key("C-c }",		cmd_inc_fill_column);
351 
352 	global_set_key("C-c p",		cmd_previous_heading);
353 	global_set_key("C-c n",		cmd_next_heading);
354 
355 	global_set_key(">",		cmd_load_url);
356 	global_set_key("<",		cmd_load_current_url);
357 	global_set_key("C-x C-f",	cmd_load_url);
358 	global_set_key("C-x M-f",	cmd_load_current_url);
359 
360 	global_set_key("C-x o",		cmd_other_window);
361 
362 	global_set_key("C-x t 0",	cmd_tab_close);
363 	global_set_key("C-x t 1",	cmd_tab_close_other);
364 	global_set_key("C-x t 2",	cmd_tab_new);
365 	global_set_key("C-x t o",	cmd_tab_next);
366 	global_set_key("C-x t O",	cmd_tab_previous);
367 	global_set_key("C-x t m",	cmd_tab_move);
368 	global_set_key("C-x t M",	cmd_tab_move_to);
369 
370 	global_set_key("B",		cmd_previous_page);
371 	global_set_key("C-M-b",		cmd_previous_page);
372 	global_set_key("F",		cmd_next_page);
373 	global_set_key("C-M-f",		cmd_next_page);
374 
375 	global_set_key("<f7> a",	cmd_bookmark_page);
376 	global_set_key("<f7> <f7>",	cmd_list_bookmarks);
377 
378 	global_set_key("C-z",		cmd_suspend_telescope);
379 
380 	/* vi/vi-like */
381 	global_set_key("k",		cmd_previous_line);
382 	global_set_key("j",		cmd_next_line);
383 	global_set_key("l",		cmd_forward_char);
384 	global_set_key("h",		cmd_backward_char);
385 	global_set_key("{",		cmd_backward_paragraph);
386 	global_set_key("}",		cmd_forward_paragraph);
387 	global_set_key("^",		cmd_move_beginning_of_line);
388 	global_set_key("$",		cmd_move_end_of_line);
389 
390 	global_set_key("K",		cmd_scroll_line_up);
391 	global_set_key("J",		cmd_scroll_line_down);
392 
393 	global_set_key("g g",		cmd_beginning_of_buffer);
394 	global_set_key("G",		cmd_end_of_buffer);
395 
396 	global_set_key("g D",		cmd_tab_close);
397 	global_set_key("g N",		cmd_tab_new);
398 	global_set_key("g t",		cmd_tab_next);
399 	global_set_key("g T",		cmd_tab_previous);
400 	global_set_key("g M-t",		cmd_tab_move);
401 	global_set_key("g M-T",		cmd_tab_move_to);
402 
403 	global_set_key("H",		cmd_previous_page);
404 	global_set_key("L",		cmd_next_page);
405 
406 	global_set_key("u",		cmd_tab_undo_close);
407 
408 	/* tmp */
409 	global_set_key("q",		cmd_kill_telescope);
410 
411 	global_set_key("esc",		cmd_clear_minibuf);
412 
413 	global_set_key(":",		cmd_execute_extended_command);
414 
415 	/* cua */
416 	global_set_key("<up>",		cmd_previous_line);
417 	global_set_key("<down>",	cmd_next_line);
418 	global_set_key("<right>",	cmd_forward_char);
419 	global_set_key("<left>",	cmd_backward_char);
420 	global_set_key("<home>",	cmd_move_beginning_of_line);
421 	global_set_key("<end>",		cmd_move_end_of_line);
422 	global_set_key("<prior>",	cmd_scroll_up);
423 	global_set_key("<next>",	cmd_scroll_down);
424 
425 	global_set_key("C-w",		cmd_tab_close);
426 	global_set_key("C-t",		cmd_tab_new);
427 	global_set_key("M-<prior>",	cmd_tab_previous);
428 	global_set_key("M-<next>",	cmd_tab_next);
429 
430 	global_set_key("del",		cmd_previous_page);
431 	global_set_key("M-<left>",	cmd_previous_page);
432 	global_set_key("M-<right>",	cmd_next_page);
433 
434 	global_set_key("<f5>",		cmd_reload_page);
435 	global_set_key("r",		cmd_reload_page);
436 
437 	/* "ncurses standard" */
438 	global_set_key("C-l",		cmd_redraw);
439 
440 	/* global */
441 	global_set_key("<f1>",		cmd_toggle_help);
442 	global_set_key("<f2>",		cmd_toggle_downloads);
443 	global_set_key("C-m",		cmd_push_button);
444 	global_set_key("M-enter",	cmd_push_button_new_tab);
445 	global_set_key("M-tab",		cmd_previous_button);
446 	global_set_key("backtab",	cmd_previous_button);
447 	global_set_key("tab",		cmd_next_button);
448 	global_set_key("M-t",		cmd_tab_select);
449 	global_set_key("[",		cmd_tab_previous);
450 	global_set_key("]",		cmd_tab_next);
451 	global_set_key("M-[",		cmd_tab_move_to);
452 	global_set_key("M-]",		cmd_tab_move);
453 	global_set_key("M-l",		cmd_link_select);
454 	global_set_key("M-/",		cmd_swiper);
455 	global_set_key("t",		cmd_toc);
456 
457 	/* === minibuffer map === */
458 	minibuffer_set_key("ret",		cmd_mini_complete_and_exit);
459 	minibuffer_set_key("C-g",		cmd_mini_abort);
460 	minibuffer_set_key("esc",		cmd_mini_abort);
461 	minibuffer_set_key("C-d",		cmd_mini_delete_char);
462 	minibuffer_set_key("del",		cmd_mini_delete_backward_char);
463 	minibuffer_set_key("backspace",		cmd_mini_delete_backward_char);
464 	minibuffer_set_key("C-h",		cmd_mini_delete_backward_char);
465 
466 	minibuffer_set_key("C-b",		cmd_backward_char);
467 	minibuffer_set_key("C-f",		cmd_forward_char);
468 	minibuffer_set_key("<left>",		cmd_backward_char);
469 	minibuffer_set_key("<right>",		cmd_forward_char);
470 	minibuffer_set_key("C-e",		cmd_move_end_of_line);
471 	minibuffer_set_key("C-a",		cmd_move_beginning_of_line);
472 	minibuffer_set_key("<end>",		cmd_move_end_of_line);
473 	minibuffer_set_key("<home>",		cmd_move_beginning_of_line);
474 	minibuffer_set_key("C-k",		cmd_mini_kill_line);
475 
476 	minibuffer_set_key("M-p",		cmd_mini_previous_history_element);
477 	minibuffer_set_key("M-n",		cmd_mini_next_history_element);
478 
479 	minibuffer_set_key("C-p",		cmd_previous_completion);
480 	minibuffer_set_key("C-n",		cmd_next_completion);
481 	minibuffer_set_key("<up>",		cmd_previous_completion);
482 	minibuffer_set_key("<down>",		cmd_next_completion);
483 
484 	minibuffer_set_key("C-v",		cmd_mini_scroll_down);
485 	minibuffer_set_key("M-v",		cmd_mini_scroll_up);
486 	minibuffer_set_key("<next>",		cmd_mini_scroll_down);
487 	minibuffer_set_key("<prior>",		cmd_mini_scroll_up);
488 
489 	minibuffer_set_key("M-<",		cmd_mini_goto_beginning);
490 	minibuffer_set_key("M->",		cmd_mini_goto_end);
491 
492 	minibuffer_set_key("tab",		cmd_insert_current_candidate);
493 }
494 
495 void
496 config_init(void)
497 {
498 	struct line_face *f;
499 	size_t i, len;
500 
501 	len = sizeof(line_faces)/sizeof(line_faces[0]);
502 	for (i = 0; i < len; ++i) {
503 		f = &line_faces[i];
504 
505 		f->prfx_bg = f->bg = f->trail_bg = -1;
506 		f->prfx_fg = f->fg = f->trail_fg = -1;
507 	}
508 
509 	line_faces[LINE_LINK].fg = COLOR_BLUE;
510 	line_faces[LINE_PATCH_ADD].fg = COLOR_GREEN;
511 	line_faces[LINE_PATCH_DEL].fg = COLOR_RED;
512 
513 	load_default_keys();
514 }
515 
516 int
517 config_setprfx(const char *name, const char *prfx, const char *cont)
518 {
519 	struct lineprefix *p;
520 	struct mapping *m;
521 
522 	if (!has_prefix(name, "line."))
523 		return 0;
524 	name += 5;
525 
526 	if ((m = mapping_by_name(name)) == NULL)
527 		return 0;
528 
529 	p = &line_prefixes[m->linetype];
530 	p->prfx1 = prfx;
531 	p->prfx2 = cont;
532 
533 	return 1;
534 }
535 
536 int
537 config_setvari(const char *var, int val)
538 {
539 	if (!strcmp(var, "fill-column")) {
540 		if ((fill_column = val) <= 0)
541 			fill_column = INT_MAX;
542 	} else if (!strcmp(var, "olivetti-mode")) {
543 		olivetti_mode = !!val;
544 	} else if (!strcmp(var, "enable-colors")) {
545 		enable_colors = !!val;
546 	} else if (!strcmp(var, "hide-pre-context")) {
547 		hide_pre_context = !!val;
548 	} else if (!strcmp(var, "hide-pre-blocks")) {
549 		hide_pre_blocks = !!val;
550 	} else if (!strcmp(var, "hide-pre-closing-line")) {
551 		hide_pre_closing_line = !!val;
552 	} else if (!strcmp(var, "dont-wrap-pre")) {
553 		dont_wrap_pre = !!val;
554 	} else if (!strcmp(var, "emojify-link")) {
555 		emojify_link = !!val;
556 	} else if (!strcmp(var, "update-title") || !strcmp(var, "set-title")) {
557 		set_title = !!val;
558 	} else if (!strcmp(var, "autosave")) {
559 		autosave = val;
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 if (!strcmp(var, "max-killed-tabs")) {
568 		if (val >= 0)
569 			max_killed_tabs = MIN(val, 128);
570 	} else {
571 		return 0;
572 	}
573 
574 	return 1;
575 }
576 
577 int
578 config_setvars(const char *var, char *val)
579 {
580 	if (!strcmp(var, "download-path")) {
581 		const char *prfx = "", *v = val, *sufx = "";
582 
583 		if (has_prefix(val, "~/") &&
584 		    v++ &&
585 		    (prfx = getenv("HOME")) == NULL)
586 			return 0;
587 
588 		if (!has_suffix(val, "/"))
589 			sufx = "/";
590 
591 		free(download_path);
592 		if (asprintf(&download_path, "%s%s%s", prfx, v, sufx) == -1) {
593 			download_path = NULL;
594 			return 0;
595 		}
596 
597 		free(val);
598 		return 1;
599 	} else if (!strcmp(var, "new-tab-url")) {
600 		free(new_tab_url);
601 		new_tab_url = val;
602 	} else
603 		return 0;
604 	return 1;
605 }
606 
607 int
608 config_setcolor(int bg, const char *name, int prfx, int line, int trail)
609 {
610 	struct mapping *m;
611 	struct line_face *f;
612 
613 	if (!strcmp(name, "tabline")) {
614 		if (bg)
615 			tab_face.bg_bg = prfx;
616 		else
617 			tab_face.bg_fg = prfx;
618 	} else if (has_prefix(name, "tabline.")) {
619 		name += 8;
620 
621 		if (!strcmp(name, "tab")) {
622 			if (bg)
623 				tab_face.t_bg = prfx;
624 			else
625 				tab_face.t_fg = prfx;
626 		} else if (!strcmp(name, "current")) {
627 			if (bg)
628 				tab_face.c_bg = prfx;
629 			else
630 				tab_face.c_fg = prfx;
631 		} else
632 			return 0;
633 	} else if (has_prefix(name, "line.")) {
634 		name += 5;
635 
636 		if ((m = mapping_by_name(name)) == NULL)
637 			return 0;
638 
639 		f = &line_faces[m->linetype];
640 
641 		if (bg) {
642 			f->prfx_bg = prfx;
643 			f->bg = line;
644 			f->trail_bg = trail;
645 		} else {
646 			f->prfx_fg = prfx;
647 			f->fg = line;
648 			f->trail_fg = trail;
649 		}
650 	} else if (!strcmp(name, "line")) {
651 		if (bg) {
652 			body_face.lbg = prfx;
653 			body_face.bg  = line;
654 			body_face.rbg = trail;
655 		} else {
656 			body_face.lfg = prfx;
657 			body_face.fg = line;
658 			body_face.rfg = trail;
659 		}
660 	} else if (!strcmp(name, "download")) {
661 		if (bg)
662 			download_face.bg = prfx;
663 		else
664 			download_face.fg = prfx;
665 	} else if (!strcmp(name, "minibuffer")) {
666 		if (bg)
667 			minibuffer_face.bg = prfx;
668 		else
669 			minibuffer_face.fg = prfx;
670 	} else if (!strcmp(name, "modeline")) {
671 		if (bg)
672 			modeline_face.bg = prfx;
673 		else
674 			modeline_face.fg = prfx;
675 	} else {
676 		return 0;
677 	}
678 
679 	return 1;
680 }
681 
682 int
683 config_setattr(const char *name, int prfx, int line, int trail)
684 {
685 	struct mapping *m;
686 	struct line_face *f;
687 
688 	if (!strcmp(name, "tabline")) {
689 		tab_face.bg_attr = prfx;
690 	} else if (has_prefix(name, "tabline.")) {
691 		name += 8;
692 
693 		if (!strcmp(name, "tab"))
694 			tab_face.t_attr = prfx;
695 		else if (!strcmp(name, "current"))
696 			tab_face.c_attr = prfx;
697 		else
698 			return 0;
699 	} else if (has_prefix(name, "line.")) {
700 		name += 5;
701 
702 		if ((m = mapping_by_name(name)) == NULL)
703 			return 0;
704 
705 		f = &line_faces[m->linetype];
706 
707 		f->prfx_attr = prfx;
708 		f->attr = line;
709 		f->trail_attr = trail;
710 	} else if (!strcmp(name, "download")) {
711 		download_face.attr = prfx;
712 	} else if (!strcmp(name, "minibuffer")) {
713 		minibuffer_face.attr = prfx;
714 	} else if (!strcmp(name, "modeline")) {
715 		modeline_face.attr = prfx;
716 	} else {
717 		return 0;
718 	}
719 
720 	return 1;
721 }
722 
723 static inline void
724 tl_init_pair(int colors, int pair, int f, int b)
725 {
726 	if (f >= colors || !enable_colors)
727 		f = -1;
728 	if (b >= colors || !enable_colors)
729 		b = -1;
730 	init_pair(pair, f, b);
731 }
732 
733 void
734 config_apply_style(void)
735 {
736 	size_t i, colors, len;
737 	struct line_face *f;
738 
739 	colors = COLORS;
740 
741 	len = sizeof(line_faces)/sizeof(line_faces[0]);
742 	for (i = 0; i < len; ++i) {
743 		f = &line_faces[i];
744 
745 		tl_init_pair(colors, f->prfx_pair, f->prfx_fg, f->prfx_bg);
746 		f->prefix = COLOR_PAIR(f->prfx_pair) | f->prfx_attr;
747 
748 		tl_init_pair(colors, f->pair, f->fg, f->bg);
749 		f->text = COLOR_PAIR(f->pair) | f->attr;
750 
751 		tl_init_pair(colors, f->trail_pair, f->trail_fg, f->trail_bg);
752 		f->trail = COLOR_PAIR(f->trail_pair) | f->trail_attr;
753 	}
754 
755 	/* tab line */
756 	tl_init_pair(colors, PTL_BG, tab_face.bg_fg, tab_face.bg_bg);
757 	tab_face.background = COLOR_PAIR(PTL_BG) | tab_face.bg_attr;
758 
759 	tl_init_pair(colors, PTL_TAB, tab_face.t_fg, tab_face.t_bg);
760 	tab_face.tab = COLOR_PAIR(PTL_TAB) | tab_face.t_attr;
761 
762 	tl_init_pair(colors, PTL_CURR, tab_face.c_fg, tab_face.c_bg);
763 	tab_face.current = COLOR_PAIR(PTL_CURR) | tab_face.c_attr;
764 
765 	/* body */
766 	tl_init_pair(colors, PBODY, body_face.fg, body_face.bg);
767 	body_face.body = COLOR_PAIR(PBODY);
768 
769 	tl_init_pair(colors, PBLEFT, body_face.lfg, body_face.lbg);
770 	body_face.left = COLOR_PAIR(PBLEFT);
771 
772 	tl_init_pair(colors, PBRIGHT, body_face.rfg, body_face.rbg);
773 	body_face.right = COLOR_PAIR(PBRIGHT);
774 
775 	/* download */
776 	tl_init_pair(colors, PDOWNLOAD_WIN, download_face.fg, download_face.bg);
777 	download_face.background = COLOR_PAIR(PDOWNLOAD_WIN) | download_face.attr;
778 
779 	/* modeline */
780 	tl_init_pair(colors, PMODELINE, modeline_face.fg, modeline_face.bg);
781 	modeline_face.background = COLOR_PAIR(PMODELINE) | modeline_face.attr;
782 
783 	/* minibuffer */
784 	tl_init_pair(colors, PMINIBUF, minibuffer_face.fg, minibuffer_face.bg);
785 	minibuffer_face.background = COLOR_PAIR(PMINIBUF) | minibuffer_face.attr;
786 
787 }