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Date:: Tue Jul 13 15:47:58 2021 UTC
Message:: move defaults.c decls. to their own header
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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 <curses.h>
18 #include <limits.h>
19 #include <stdlib.h>
20 #include <string.h>
21 #include <unistd.h>
22 
23 #include "defaults.h"
24 #include "telescope.h"
25 #include "ui.h"
26 
27 char *new_tab_url = NULL;
28 int fill_column = 80;
29 int olivetti_mode = 1;
30 int enable_colors = 1;
31 int hide_pre_context = 0;
32 int hide_pre_blocks = 0;
33 
34 struct lineprefix line_prefixes[] = {
35 	[LINE_TEXT] =		{ "",		"" },
36 	[LINE_LINK] =		{ "=> ",	"   " },
37 	[LINE_TITLE_1] =	{ "# ",		"  " },
38 	[LINE_TITLE_2] =	{ "## ",	"   " },
39 	[LINE_TITLE_3] =	{ "### ",	"    " },
40 	[LINE_ITEM] =		{ "* ",		"  " },
41 	[LINE_QUOTE] =		{ "> ",		"  " },
42 	[LINE_PRE_START] =	{ "```",	"   " },
43 	[LINE_PRE_CONTENT] =	{ "",		"" },
44 	[LINE_PRE_END] =	{ "```",	"```" },
45 };
46 
47 struct line_face line_faces[] = {
48 	[LINE_TEXT] =		{
49 		.prfx_pair = PT_PRFX,
50 		.pair = PT,
51 		.trail_pair = PT_TRAIL,
52 	},
53 	[LINE_LINK] =		{
54 		.prfx_pair = PL_PRFX,
55 		.pair = PL,
56 		.trail_pair = PL_TRAIL,
57 		.attr = A_UNDERLINE,
58 	},
59 	[LINE_TITLE_1] =	{
60 		.prfx_pair = PT1_PRFX,
61 		.pair = PT1,
62 		.trail_pair = PT1_TRAIL,
63 		.attr = A_BOLD,
64 	},
65 	[LINE_TITLE_2] =	{
66 		.prfx_pair = PT2_PRFX,
67 		.pair = PT2,
68 		.trail_pair = PT2_TRAIL,
69 		.attr = A_BOLD,
70 	},
71 	[LINE_TITLE_3] =	{
72 		.prfx_pair = PT3_PRFX,
73 		.pair = PT3,
74 		.trail_pair = PT3_TRAIL,
75 		.attr = A_BOLD,
76 	},
77 	[LINE_ITEM] =		{
78 		.prfx_pair = PI_PRFX,
79 		.pair = PI,
80 		.trail_pair = PI_TRAIL,
81 	},
82 	[LINE_QUOTE] =		{
83 		.prfx_pair = PQ_PRFX,
84 		.pair = PQ,
85 		.trail_pair = PQ_TRAIL,
86 		.attr = A_DIM,
87 	},
88 	[LINE_PRE_START] =	{
89 		.prfx_pair = PPSTART_PRFX,
90 		.pair = PPSTART,
91 		.trail_pair = PPSTART_TRAIL,
92 	},
93 	[LINE_PRE_CONTENT] =	{
94 		.prfx_pair = PP_PRFX,
95 		.pair = PP,
96 		.trail_pair = PP_TRAIL,
97 	},
98 	[LINE_PRE_END] =	{
99 		.prfx_pair = PPEND_PRFX,
100 		.pair = PPEND,
101 		.trail_pair = PPEND_TRAIL,
102 	},
103 };
104 
105 struct tab_face tab_face = {
106 	.bg_attr = A_REVERSE, .bg_bg = -1, .bg_fg = -1,
107 	.t_attr  = A_REVERSE, .t_bg  = -1, .t_fg  = -1,
108 	.c_attr  = A_NORMAL,  .c_bg  = -1, .c_fg  = -1,
109 
110 	/*
111 	 * set these so that even when enable-color=0 the bar has some
112 	 * sane defaults.
113 	 */
114 	.background =	A_REVERSE,
115 	.tab =		A_REVERSE,
116 	.current =	A_NORMAL,
117 };
118 
119 struct body_face body_face = {
120 	.lbg = -1, .lfg = -1,
121 	.bg  = -1, .fg  = -1,
122 	.rbg = -1, .rfg = -1,
123 };
124 
125 struct modeline_face modeline_face = {
126 	.bg  = -1,
127 	.fg  = -1,
128 	.attr = A_REVERSE,
129 };
130 
131 struct minibuffer_face minibuffer_face = {
132 	.bg = -1,
133 	.fg = -1,
134 	.attr = A_NORMAL,
135 };
136 
137 struct mapping {
138 	const char	*label;
139 	int		 linetype;
140 } mappings[] = {
141 	{"text",	LINE_TEXT},
142 	{"link",	LINE_LINK},
143 	{"title1",	LINE_TITLE_1},
144 	{"title2",	LINE_TITLE_2},
145 	{"title3",	LINE_TITLE_3},
146 	{"item",	LINE_ITEM},
147 	{"quote",	LINE_QUOTE},
148 	{"pre.start",	LINE_PRE_START},
149 	{"pre",		LINE_PRE_CONTENT},
150 	{"pre.end",	LINE_PRE_END},
151 };
152 
153 static struct mapping *
154 mapping_by_name(const char *name)
155 {
156 	size_t i;
157 
158 	for (i = 0; i < sizeof(mappings)/sizeof(mappings[0]); ++i) {
159 		if (!strcmp(name, mappings[i].label))
160 			return &mappings[i];
161 	}
162 
163 	return NULL;
164 }
165 
166 
167 static inline void
168 global_set_key(const char *key, void (*fn)(struct buffer*))
169 {
170 	if (!kmap_define_key(&global_map, key, fn))
171 		_exit(1);
172 }
173 
174 static inline void
175 minibuffer_set_key(const char *key, void (*fn)(struct buffer*))
176 {
177 	if (!kmap_define_key(&minibuffer_map, key, fn))
178 		_exit(1);
179 }
180 
181 static void
182 load_default_keys(void)
183 {
184 	/* === global map === */
185 
186 	/* emacs */
187 	global_set_key("C-p",		cmd_previous_line);
188 	global_set_key("C-n",		cmd_next_line);
189 	global_set_key("C-f",		cmd_forward_char);
190 	global_set_key("C-b",		cmd_backward_char);
191 	global_set_key("M-{",		cmd_backward_paragraph);
192 	global_set_key("M-}",		cmd_forward_paragraph);
193 	global_set_key("C-a",		cmd_move_beginning_of_line);
194 	global_set_key("C-e",		cmd_move_end_of_line);
195 
196 	global_set_key("M-v",		cmd_scroll_up);
197 	global_set_key("C-v",		cmd_scroll_down);
198 	global_set_key("M-space",	cmd_scroll_up);
199 	global_set_key("space",		cmd_scroll_down);
200 
201 	global_set_key("M-<",		cmd_beginning_of_buffer);
202 	global_set_key("M->",		cmd_end_of_buffer);
203 
204 	global_set_key("C-x C-c",	cmd_kill_telescope);
205 
206 	global_set_key("C-g",		cmd_clear_minibuf);
207 
208 	global_set_key("M-x",		cmd_execute_extended_command);
209 
210 	global_set_key("C-c {",		cmd_dec_fill_column);
211 	global_set_key("C-c }",		cmd_inc_fill_column);
212 
213 	global_set_key("C-c p",		cmd_previous_heading);
214 	global_set_key("C-c n",		cmd_next_heading);
215 
216 	global_set_key(">",		cmd_load_url);
217 	global_set_key("C-x C-f",	cmd_load_url);
218 	global_set_key("C-x M-f",	cmd_load_current_url);
219 
220 	global_set_key("C-x t 0",	cmd_tab_close);
221 	global_set_key("C-x t 1",	cmd_tab_close_other);
222 	global_set_key("C-x t 2",	cmd_tab_new);
223 	global_set_key("C-x t o",	cmd_tab_next);
224 	global_set_key("C-x t O",	cmd_tab_previous);
225 	global_set_key("C-x t m",	cmd_tab_move);
226 	global_set_key("C-x t M",	cmd_tab_move_to);
227 
228 	global_set_key("B",		cmd_previous_page);
229 	global_set_key("C-M-b",		cmd_previous_page);
230 	global_set_key("F",		cmd_next_page);
231 	global_set_key("C-M-f",		cmd_next_page);
232 
233 	global_set_key("<f7> a",	cmd_bookmark_page);
234 	global_set_key("<f7> <f7>",	cmd_list_bookmarks);
235 
236 	/* vi/vi-like */
237 	global_set_key("k",		cmd_previous_line);
238 	global_set_key("j",		cmd_next_line);
239 	global_set_key("l",		cmd_forward_char);
240 	global_set_key("h",		cmd_backward_char);
241 	global_set_key("{",		cmd_backward_paragraph);
242 	global_set_key("}",		cmd_forward_paragraph);
243 	global_set_key("^",		cmd_move_beginning_of_line);
244 	global_set_key("$",		cmd_move_end_of_line);
245 
246 	global_set_key("K",		cmd_scroll_line_up);
247 	global_set_key("J",		cmd_scroll_line_down);
248 
249 	global_set_key("g g",		cmd_beginning_of_buffer);
250 	global_set_key("G",		cmd_end_of_buffer);
251 
252 	global_set_key("g D",		cmd_tab_close);
253 	global_set_key("g N",		cmd_tab_new);
254 	global_set_key("g t",		cmd_tab_next);
255 	global_set_key("g T",		cmd_tab_previous);
256 	global_set_key("g M-t",		cmd_tab_move);
257 	global_set_key("g M-T",		cmd_tab_move_to);
258 
259 	global_set_key("H",		cmd_previous_page);
260 	global_set_key("L",		cmd_next_page);
261 
262 	/* tmp */
263 	global_set_key("q",		cmd_kill_telescope);
264 
265 	global_set_key("esc",		cmd_clear_minibuf);
266 
267 	global_set_key(":",		cmd_execute_extended_command);
268 
269 	/* cua */
270 	global_set_key("<up>",		cmd_previous_line);
271 	global_set_key("<down>",	cmd_next_line);
272 	global_set_key("<right>",	cmd_forward_char);
273 	global_set_key("<left>",	cmd_backward_char);
274 	global_set_key("<prior>",	cmd_scroll_up);
275 	global_set_key("<next>",	cmd_scroll_down);
276 
277 	global_set_key("C-w",		cmd_tab_close);
278 	global_set_key("C-t",		cmd_tab_new);
279 	global_set_key("M-<prior>",	cmd_tab_previous);
280 	global_set_key("M-<next>",	cmd_tab_next);
281 
282 	global_set_key("M-<left>",	cmd_previous_page);
283 	global_set_key("M-<right>",	cmd_next_page);
284 
285 	/* "ncurses standard" */
286 	global_set_key("C-l",		cmd_redraw);
287 
288 	/* global */
289 	global_set_key("<f1>",		cmd_toggle_help);
290 	global_set_key("C-m",		cmd_push_button);
291 	global_set_key("M-enter",	cmd_push_button_new_tab);
292 	global_set_key("M-tab",		cmd_previous_button);
293 	global_set_key("backtab",	cmd_previous_button);
294 	global_set_key("tab",		cmd_next_button);
295 
296 	/* === minibuffer map === */
297 	minibuffer_set_key("ret",		cmd_mini_complete_and_exit);
298 	minibuffer_set_key("C-g",		cmd_mini_abort);
299 	minibuffer_set_key("esc",		cmd_mini_abort);
300 	minibuffer_set_key("C-d",		cmd_mini_delete_char);
301 	minibuffer_set_key("del",		cmd_mini_delete_backward_char);
302 	minibuffer_set_key("backspace",		cmd_mini_delete_backward_char);
303 	minibuffer_set_key("C-h",		cmd_mini_delete_backward_char);
304 
305 	minibuffer_set_key("C-b",		cmd_backward_char);
306 	minibuffer_set_key("C-f",		cmd_forward_char);
307 	minibuffer_set_key("<left>",		cmd_backward_char);
308 	minibuffer_set_key("<right>",		cmd_forward_char);
309 	minibuffer_set_key("C-e",		cmd_move_end_of_line);
310 	minibuffer_set_key("C-a",		cmd_move_beginning_of_line);
311 	minibuffer_set_key("<end>",		cmd_move_end_of_line);
312 	minibuffer_set_key("<home>",		cmd_move_beginning_of_line);
313 	minibuffer_set_key("C-k",		cmd_mini_kill_line);
314 
315 	minibuffer_set_key("M-p",		cmd_mini_previous_history_element);
316 	minibuffer_set_key("M-n",		cmd_mini_next_history_element);
317 	minibuffer_set_key("<up>",		cmd_mini_previous_history_element);
318 	minibuffer_set_key("<down>",		cmd_mini_next_history_element);
319 }
320 
321 void
322 config_init(void)
323 {
324 	struct line_face *f;
325 	size_t i, len;
326 
327 	len = sizeof(line_faces)/sizeof(line_faces[0]);
328 	for (i = 0; i < len; ++i) {
329 		f = &line_faces[i];
330 
331 		f->prfx_bg = f->bg = f->trail_bg = -1;
332 		f->prfx_fg = f->fg = f->trail_fg = -1;
333 	}
334 
335 	line_faces[LINE_LINK].fg = COLOR_BLUE;
336 
337 	load_default_keys();
338 }
339 
340 int
341 config_setprfx(const char *name, const char *prfx, const char *cont)
342 {
343 	struct lineprefix *p;
344 	struct mapping *m;
345 
346 	if (!has_prefix(name, "line."))
347 		return 0;
348 	name += 5;
349 
350 	if ((m = mapping_by_name(name)) == NULL)
351 		return 0;
352 
353 	p = &line_prefixes[m->linetype];
354 	p->prfx1 = prfx;
355 	p->prfx2 = cont;
356 
357 	return 1;
358 }
359 
360 int
361 config_setvari(const char *var, int val)
362 {
363 	if (!strcmp(var, "fill-column")) {
364 		if ((fill_column = val) <= 0)
365 			fill_column = INT_MAX;
366 	} else if (!strcmp(var, "olivetti-mode")) {
367 		olivetti_mode = !!val;
368 	} else if (!strcmp(var, "enable-colors")) {
369 		enable_colors = !!val;
370 	} else if (!strcmp(var, "hide-pre-context")) {
371 		hide_pre_context = !!val;
372 	} else if (!strcmp(var, "hide-pre-blocks")) {
373 		hide_pre_blocks = !!val;
374 	} else {
375 		return 0;
376 	}
377 
378 	return 1;
379 }
380 
381 int
382 config_setvars(const char *var, char *val)
383 {
384 	if (!strcmp(var, "new-tab-url")) {
385 		if (new_tab_url != NULL)
386 			free(new_tab_url);
387 		new_tab_url = val;
388 	} else
389 		return 0;
390 	return 1;
391 }
392 
393 int
394 config_setcolor(int bg, const char *name, int prfx, int line, int trail)
395 {
396         struct mapping *m;
397 	struct line_face *f;
398 
399 	if (!strcmp(name, "tabline")) {
400 		if (bg)
401 			tab_face.bg_bg = prfx;
402 		else
403 			tab_face.bg_fg = prfx;
404 	} else if (has_prefix(name, "tabline.")) {
405 		name += 8;
406 
407 		if (!strcmp(name, "tab")) {
408 			if (bg)
409 				tab_face.t_bg = prfx;
410 			else
411 				tab_face.t_fg = prfx;
412 		} else if (!strcmp(name, "current")) {
413 			if (bg)
414 				tab_face.c_bg = prfx;
415 			else
416 				tab_face.c_fg = prfx;
417 		} else
418 			return 0;
419 	} else if (has_prefix(name, "line.")) {
420 		name += 5;
421 
422 		if ((m = mapping_by_name(name)) == NULL)
423 			return 0;
424 
425 		f = &line_faces[m->linetype];
426 
427 		if (bg) {
428 			f->prfx_bg = prfx;
429 			f->bg = line;
430 			f->trail_bg = trail;
431 		} else {
432 			f->prfx_fg = prfx;
433 			f->fg = line;
434 			f->trail_fg = trail;
435 		}
436 	} else if (!strcmp(name, "line")) {
437 		if (bg) {
438 			body_face.lbg = prfx;
439 			body_face.bg  = line;
440 			body_face.rbg = trail;
441 		} else {
442 			body_face.lfg = prfx;
443 			body_face.fg = line;
444 			body_face.rfg = trail;
445 		}
446 	} else if (!strcmp(name, "minibuffer")) {
447 		if (bg)
448 			minibuffer_face.bg = prfx;
449 		else
450 			minibuffer_face.fg = prfx;
451 	} else if (!strcmp(name, "modeline")) {
452 		if (bg)
453 			modeline_face.bg = prfx;
454 		else
455 			modeline_face.fg = prfx;
456 	} else {
457 		return 0;
458 	}
459 
460 	return 1;
461 }
462 
463 int
464 config_setattr(const char *name, int prfx, int line, int trail)
465 {
466 	struct mapping *m;
467 	struct line_face *f;
468 
469 	if (!strcmp(name, "tabline")) {
470 		tab_face.bg_attr = prfx;
471 	} else if (has_prefix(name, "tabline.")) {
472 		name += 8;
473 
474 		if (!strcmp(name, "tab"))
475 			tab_face.t_attr = prfx;
476 		else if (!strcmp(name, "current"))
477 			tab_face.c_attr = prfx;
478 		else
479 			return 0;
480 	} else if (has_prefix(name, "line.")) {
481 		name += 5;
482 
483 		if ((m = mapping_by_name(name)) == NULL)
484 			return 0;
485 
486 		f = &line_faces[m->linetype];
487 
488 		f->prfx_attr = prfx;
489 		f->attr = line;
490 		f->trail_attr = trail;
491 	} else if (!strcmp(name, "minibuffer")) {
492 		minibuffer_face.attr = prfx;
493 	} else if (!strcmp(name, "modeline")) {
494 		modeline_face.attr = prfx;
495 	} else {
496 		return 0;
497 	}
498 
499 	return 1;
500 }
501 
502 static inline void
503 tl_init_pair(int colors, int pair, int f, int b)
504 {
505 	if (f >= colors || !enable_colors)
506 		f = -1;
507 	if (b >= colors || !enable_colors)
508 		b = -1;
509 	init_pair(pair, f, b);
510 }
511 
512 void
513 config_apply_style(void)
514 {
515 	size_t i, colors, len;
516 	struct line_face *f;
517 
518 	colors = COLORS;
519 
520 	len = sizeof(line_faces)/sizeof(line_faces[0]);
521 	for (i = 0; i < len; ++i) {
522 		f = &line_faces[i];
523 
524 		tl_init_pair(colors, f->prfx_pair, f->prfx_fg, f->prfx_bg);
525 		f->prefix = COLOR_PAIR(f->prfx_pair) | f->prfx_attr;
526 
527 		tl_init_pair(colors, f->pair, f->fg, f->bg);
528 		f->text = COLOR_PAIR(f->pair) | f->attr;
529 
530 		tl_init_pair(colors, f->trail_pair, f->trail_fg, f->trail_bg);
531 		f->trail = COLOR_PAIR(f->trail_pair) | f->trail_attr;
532 	}
533 
534 	/* tab line */
535 	tl_init_pair(colors, PTL_BG, tab_face.bg_fg, tab_face.bg_bg);
536 	tab_face.background = COLOR_PAIR(PTL_BG) | tab_face.bg_attr;
537 
538 	tl_init_pair(colors, PTL_TAB, tab_face.t_fg, tab_face.t_bg);
539 	tab_face.tab = COLOR_PAIR(PTL_TAB) | tab_face.t_attr;
540 
541 	tl_init_pair(colors, PTL_CURR, tab_face.c_fg, tab_face.c_bg);
542 	tab_face.current = COLOR_PAIR(PTL_CURR) | tab_face.c_attr;
543 
544 	/* body */
545 	tl_init_pair(colors, PBODY, body_face.fg, body_face.bg);
546 	body_face.body = COLOR_PAIR(PBODY);
547 
548 	tl_init_pair(colors, PBLEFT, body_face.lfg, body_face.lbg);
549 	body_face.left = COLOR_PAIR(PBLEFT);
550 
551 	tl_init_pair(colors, PBRIGHT, body_face.rfg, body_face.rbg);
552 	body_face.right = COLOR_PAIR(PBRIGHT);
553 
554 	/* modeline */
555 	tl_init_pair(colors, PMODELINE, modeline_face.fg, modeline_face.bg);
556 	modeline_face.background = COLOR_PAIR(PMODELINE) | modeline_face.attr;
557 
558 	/* minibuffer */
559 	tl_init_pair(colors, PMINIBUF, minibuffer_face.fg, minibuffer_face.bg);
560 	minibuffer_face.background = COLOR_PAIR(PMINIBUF) | minibuffer_face.attr;
561 
562 }