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