op public repos

Blob

Date:: Thu Jul 15 09:29:30 2021 UTC
Message:: add toc, bound to t
Actions:: History | Blame | Raw File
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 <limits.h>
18 #include <stdlib.h>
19 #include <string.h>
20 
21 #include "compl.h"
22 #include "defaults.h"
23 #include "minibuffer.h"
24 #include "telescope.h"
25 #include "ui.h"
26 #include "utf8.h"
27 
28 /* return 1 if moved, 0 otherwise */
29 static inline int
30 forward_line(struct buffer *buffer, int n)
31 {
32 	struct vline *vl;
33 	int did;
34 
35 	if (buffer->current_line == NULL)
36 		return 0;
37 	vl = buffer->current_line;
38 
39 	did = 0;
40 	while (n != 0) {
41 		if (n > 0) {
42 			vl = TAILQ_NEXT(vl, vlines);
43 			if (vl == NULL)
44 				return did;
45 			if (vl->parent->flags & L_HIDDEN)
46 				continue;
47 			buffer->current_line = vl;
48 			n--;
49 		} else {
50 			vl = TAILQ_PREV(vl, vhead, vlines);
51 			if (vl == NULL)
52 				return did;
53 			if (vl->parent->flags & L_HIDDEN)
54 				continue;
55 			if (buffer->current_line == buffer->top_line) {
56 				buffer->line_off--;
57 				buffer->top_line = vl;
58 			}
59 			buffer->current_line = vl;
60 			n++;
61 		}
62 
63 		did = 1;
64 	}
65 
66 	return did;
67 }
68 
69 void
70 cmd_previous_line(struct buffer *buffer)
71 {
72 	forward_line(buffer, -1);
73 }
74 
75 void
76 cmd_next_line(struct buffer *buffer)
77 {
78 	forward_line(buffer, +1);
79 }
80 
81 void
82 cmd_backward_char(struct buffer *buffer)
83 {
84 	if (buffer->cpoff != 0)
85 		buffer->cpoff--;
86 }
87 
88 void
89 cmd_forward_char(struct buffer *buffer)
90 {
91 	size_t len = 0;
92 
93 	if (buffer->current_line->line != NULL)
94 		len = utf8_cplen(buffer->current_line->line);
95 	if (++buffer->cpoff > len)
96 		buffer->cpoff = len;
97 }
98 
99 void
100 cmd_backward_paragraph(struct buffer *buffer)
101 {
102 	do {
103 		if (!forward_line(buffer, -1)) {
104 			message("No previous paragraph");
105 			return;
106 		}
107 	} while (buffer->current_line->line != NULL ||
108 	    buffer->current_line->parent->type != LINE_TEXT);
109 }
110 
111 void
112 cmd_forward_paragraph(struct buffer *buffer)
113 {
114 	do {
115 		if (!forward_line(buffer, +1)) {
116 			message("No next paragraph");
117 			return;
118 		}
119 	} while (buffer->current_line->line != NULL ||
120 	    buffer->current_line->parent->type != LINE_TEXT);
121 }
122 
123 void
124 cmd_move_beginning_of_line(struct buffer *buffer)
125 {
126 	buffer->cpoff = 0;
127 }
128 
129 void
130 cmd_move_end_of_line(struct buffer *buffer)
131 {
132 	struct vline	*vl;
133 
134 	vl = buffer->current_line;
135 	if (vl->line == NULL)
136 		return;
137 	buffer->cpoff = utf8_cplen(vl->line);
138 }
139 
140 void
141 cmd_redraw(struct buffer *buffer)
142 {
143         ui_schedule_redraw();
144 }
145 
146 void
147 cmd_scroll_line_up(struct buffer *buffer)
148 {
149 	struct vline	*vl;
150 
151 	if ((vl = TAILQ_PREV(buffer->top_line, vhead, vlines))
152 	    == NULL)
153 		return;
154 
155 	forward_line(buffer, -1);
156 
157 	buffer->top_line = vl;
158 }
159 
160 void
161 cmd_scroll_line_down(struct buffer *buffer)
162 {
163 	if (!forward_line(buffer, +1))
164 		return;
165 
166 	buffer->top_line = TAILQ_NEXT(buffer->top_line, vlines);
167 	buffer->line_off++;
168 }
169 
170 void
171 cmd_scroll_up(struct buffer *buffer)
172 {
173 	forward_line(buffer, -1*body_lines);
174 }
175 
176 void
177 cmd_scroll_down(struct buffer *buffer)
178 {
179 	forward_line(buffer, body_lines);
180 }
181 
182 void
183 cmd_beginning_of_buffer(struct buffer *buffer)
184 {
185 	buffer->current_line = TAILQ_FIRST(&buffer->head);
186 	buffer->cpoff = 0;
187 	buffer->top_line = buffer->current_line;
188 	buffer->line_off = 0;
189 }
190 
191 void
192 cmd_end_of_buffer(struct buffer *buffer)
193 {
194 	buffer->current_line = TAILQ_LAST(&buffer->head, vhead);
195 	buffer->cpoff = body_cols;
196 }
197 
198 void
199 cmd_kill_telescope(struct buffer *buffer)
200 {
201 	save_session();
202 	event_loopbreak();
203 }
204 
205 void
206 cmd_push_button(struct buffer *buffer)
207 {
208 	struct vline	*vl;
209 	struct line	*l;
210 
211 	vl = buffer->current_line;
212 	switch (vl->parent->type) {
213 	case LINE_LINK:
214 		load_url_in_tab(current_tab(), vl->parent->meta.alt);
215 		break;
216 	case LINE_PRE_START:
217 		l = TAILQ_NEXT(vl->parent, lines);
218 		for (; l != NULL; l = TAILQ_NEXT(l, lines)) {
219 			if (l->type == LINE_PRE_END)
220 				break;
221 			l->flags ^= L_HIDDEN;
222 			if (l->flags & L_HIDDEN)
223 				buffer->line_max--;
224 			else
225 				buffer->line_max++;
226 		}
227 		break;
228 	default:
229 		break;
230 	}
231 }
232 
233 void
234 cmd_push_button_new_tab(struct buffer *buffer)
235 {
236 	struct vline	*vl;
237 
238 	vl = buffer->current_line;
239 	if (vl->parent->type != LINE_LINK)
240 		return;
241 
242 	new_tab(vl->parent->meta.alt);
243 }
244 
245 void
246 cmd_previous_button(struct buffer *buffer)
247 {
248 	struct excursion place;
249 
250 	save_excursion(&place, buffer);
251 
252 	do {
253 		if (!forward_line(buffer, -1)) {
254 			restore_excursion(&place, buffer);
255 			message("No previous link");
256 			return;
257 		}
258 	} while (buffer->current_line->parent->type != LINE_LINK);
259 }
260 
261 void
262 cmd_next_button(struct buffer *buffer)
263 {
264 	struct excursion place;
265 
266 	save_excursion(&place, buffer);
267 
268 	do {
269 		if (!forward_line(buffer, +1)){
270 			restore_excursion(&place, buffer);
271 			message("No next link");
272 			return;
273 		}
274 	} while (buffer->current_line->parent->type != LINE_LINK);
275 }
276 
277 static inline int
278 is_heading(const struct line *l)
279 {
280 	return l->type == LINE_TITLE_1 ||
281 		l->type == LINE_TITLE_2 ||
282 		l->type == LINE_TITLE_3;
283 }
284 
285 void
286 cmd_previous_heading(struct buffer *buffer)
287 {
288 	struct excursion place;
289 
290 	save_excursion(&place, buffer);
291 
292 	do {
293 		if (!forward_line(buffer, -1)) {
294 			restore_excursion(&place, buffer);
295 			message("No previous heading");
296 			return;
297 		}
298 	} while (!is_heading(buffer->current_line->parent));
299 }
300 
301 void
302 cmd_next_heading(struct buffer *buffer)
303 {
304 	struct excursion place;
305 
306 	save_excursion(&place, buffer);
307 
308 	do {
309 		if (!forward_line(buffer, +1)) {
310 			restore_excursion(&place, buffer);
311 			message("No next heading");
312 			return;
313 		}
314 	} while (!is_heading(buffer->current_line->parent));
315 }
316 
317 void
318 cmd_previous_page(struct buffer *buffer)
319 {
320 	struct tab *tab = current_tab();
321 
322 	if (!load_previous_page(tab))
323 		message("No previous page");
324 	else
325 		start_loading_anim(tab);
326 }
327 
328 void
329 cmd_next_page(struct buffer *buffer)
330 {
331 	struct tab *tab = current_tab();
332 
333 	if (!load_next_page(tab))
334 		message("No next page");
335 	else
336 		start_loading_anim(tab);
337 }
338 
339 void
340 cmd_clear_minibuf(struct buffer *buffer)
341 {
342         message(NULL);
343 }
344 
345 void
346 cmd_execute_extended_command(struct buffer *buffer)
347 {
348 	size_t	 len;
349 
350 	if (in_minibuffer) {
351 		message("We don't have enable-recursive-minibuffers");
352 		return;
353 	}
354 
355 	enter_minibuffer(eecmd_self_insert, eecmd_select, exit_minibuffer,
356 	    &eecmd_history, compl_eecmd, NULL);
357 
358 	len = sizeof(ministate.prompt);
359 	strlcpy(ministate.prompt, "", len);
360 
361 	if (thiskey.meta)
362 		strlcat(ministate.prompt, "M-", len);
363 
364 	strlcat(ministate.prompt, ui_keyname(thiskey.key), len);
365 
366 	if (thiskey.meta)
367 		strlcat(ministate.prompt, " ", len);
368 }
369 
370 void
371 cmd_tab_close(struct buffer *buffer)
372 {
373 	struct tab *tab, *t;
374 
375 	tab = current_tab();
376 	if (TAILQ_PREV(tab, tabshead, tabs) == NULL &&
377 	    TAILQ_NEXT(tab, tabs) == NULL) {
378 		message("Can't close the only tab.");
379 		return;
380 	}
381 
382 	if (evtimer_pending(&tab->loadingev, NULL))
383 		evtimer_del(&tab->loadingev);
384 
385 	stop_tab(tab);
386 
387 	if ((t = TAILQ_PREV(tab, tabshead, tabs)) == NULL)
388 		t = TAILQ_NEXT(tab, tabs);
389 	TAILQ_REMOVE(&tabshead, tab, tabs);
390 	free(tab);
391 
392 	switch_to_tab(t);
393 }
394 
395 void
396 cmd_tab_close_other(struct buffer *buffer)
397 {
398 	struct tab *t, *i;
399 
400 	TAILQ_FOREACH_SAFE(t, &tabshead, tabs, i) {
401 		if (t->flags & TAB_CURRENT)
402 			continue;
403 
404 		stop_tab(t);
405 		TAILQ_REMOVE(&tabshead, t, tabs);
406 		free(t);
407 	}
408 }
409 
410 void
411 cmd_tab_new(struct buffer *buffer)
412 {
413 	const char *url;
414 
415 	if ((url = new_tab_url) == NULL)
416 		url = NEW_TAB_URL;
417 
418 	new_tab(url);
419 }
420 
421 void
422 cmd_tab_next(struct buffer *buffer)
423 {
424 	struct tab *tab, *t;
425 
426 	tab = current_tab();
427 	tab->flags &= ~TAB_CURRENT;
428 
429 	if ((t = TAILQ_NEXT(tab, tabs)) == NULL)
430 		t = TAILQ_FIRST(&tabshead);
431 	t->flags |= TAB_CURRENT;
432 	t->flags &= ~TAB_URGENT;
433 }
434 
435 void
436 cmd_tab_previous(struct buffer *buffer)
437 {
438 	struct tab *tab, *t;
439 
440 	tab = current_tab();
441 	tab->flags &= ~TAB_CURRENT;
442 
443 	if ((t = TAILQ_PREV(tab, tabshead, tabs)) == NULL)
444 		t = TAILQ_LAST(&tabshead, tabshead);
445 	t->flags |= TAB_CURRENT;
446 	t->flags &= ~TAB_URGENT;
447 }
448 
449 void
450 cmd_tab_move(struct buffer *buffer)
451 {
452 	struct tab *tab, *t;
453 
454 	tab = current_tab();
455 	t = TAILQ_NEXT(tab, tabs);
456 	TAILQ_REMOVE(&tabshead, tab, tabs);
457 
458 	if (t == NULL)
459 		TAILQ_INSERT_HEAD(&tabshead, tab, tabs);
460 	else
461 		TAILQ_INSERT_AFTER(&tabshead, t, tab, tabs);
462 }
463 
464 void
465 cmd_tab_move_to(struct buffer *buffer)
466 {
467 	struct tab *tab, *t;
468 
469 	tab = current_tab();
470 	t = TAILQ_PREV(tab, tabshead, tabs);
471 	TAILQ_REMOVE(&tabshead, tab, tabs);
472 
473 	if (t == NULL) {
474 		if (TAILQ_EMPTY(&tabshead))
475 			TAILQ_INSERT_HEAD(&tabshead, tab, tabs);
476 		else
477 			TAILQ_INSERT_TAIL(&tabshead, tab, tabs);
478 	} else
479 		TAILQ_INSERT_BEFORE(t, tab, tabs);
480 }
481 
482 void
483 cmd_tab_select(struct buffer *buffer)
484 {
485 	if (in_minibuffer) {
486 		message("We don't have enable-recursive-minibuffers");
487 		return;
488 	}
489 
490 	enter_minibuffer(sensible_self_insert, ts_select, exit_minibuffer,
491 	    NULL, compl_ts, NULL);
492 	strlcpy(ministate.prompt, "Select tab: ", sizeof(ministate.prompt));
493 }
494 
495 void
496 cmd_load_url(struct buffer *buffer)
497 {
498 	if (in_minibuffer) {
499 		message("We don't have enable-recursive-minibuffers");
500 		return;
501 	}
502 
503 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
504 	    &lu_history, NULL, NULL);
505 	strlcpy(ministate.prompt, "Load URL: ", sizeof(ministate.prompt));
506 	strlcpy(ministate.buf, "gemini://", sizeof(ministate.buf));
507 	cmd_move_end_of_line(&ministate.buffer);
508 }
509 
510 void
511 cmd_load_current_url(struct buffer *buffer)
512 {
513 	struct tab *tab = current_tab();
514 
515 	if (in_minibuffer) {
516 		message("We don't have enable-recursive-minibuffers");
517 		return;
518 	}
519 
520 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
521 	    &lu_history, NULL, NULL);
522 	strlcpy(ministate.prompt, "Load URL: ", sizeof(ministate.prompt));
523 	strlcpy(ministate.buf, tab->hist_cur->h, sizeof(ministate.buf));
524 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
525 }
526 
527 void
528 cmd_reload_page(struct buffer *buffer)
529 {
530 	struct tab *tab;
531 
532 	tab = current_tab();
533 	load_url_in_tab(tab, tab->hist_cur->h);
534 }
535 
536 void
537 cmd_bookmark_page(struct buffer *buffer)
538 {
539 	struct tab *tab = current_tab();
540 
541 	enter_minibuffer(sensible_self_insert, bp_select, exit_minibuffer, NULL,
542 	    NULL, NULL);
543 	strlcpy(ministate.prompt, "Bookmark URL: ", sizeof(ministate.prompt));
544 	strlcpy(ministate.buf, tab->hist_cur->h, sizeof(ministate.buf));
545 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
546 }
547 
548 void
549 cmd_list_bookmarks(struct buffer *buffer)
550 {
551 	load_url_in_tab(current_tab(), "about:bookmarks");
552 }
553 
554 void
555 cmd_toggle_help(struct buffer *buffer)
556 {
557 	ui_toggle_side_window();
558 }
559 
560 void
561 cmd_link_select(struct buffer *buffer)
562 {
563 	if (in_minibuffer) {
564 		message("We don't have enable-recursive-minibuffers");
565 		return;
566 	}
567 
568 	enter_minibuffer(sensible_self_insert, ls_select, exit_minibuffer,
569 	    NULL, compl_ls, TAILQ_FIRST(&buffer->page.head));
570 	strlcpy(ministate.prompt, "Select link: ", sizeof(ministate.prompt));
571 }
572 
573 void
574 cmd_swiper(struct buffer *buffer)
575 {
576 	if (in_minibuffer) {
577 		message("We don't have enable-recursive-minibuffers");
578 		return;
579 	}
580 
581 	enter_minibuffer(sensible_self_insert, swiper_select, exit_minibuffer,
582 	    NULL, compl_swiper, TAILQ_FIRST(&buffer->page.head));
583 	strlcpy(ministate.prompt, "Select line: ", sizeof(ministate.prompt));
584 }
585 
586 void
587 cmd_toc(struct buffer *buffer)
588 {
589 	if (in_minibuffer) {
590 		message("We don't have enable-recursive-minibuffers");
591 		return;
592 	}
593 
594 	enter_minibuffer(sensible_self_insert, toc_select, exit_minibuffer,
595 	    NULL, compl_toc, TAILQ_FIRST(&buffer->page.head));
596 	strlcpy(ministate.prompt, "Select heading: ",
597 	    sizeof(ministate.prompt));
598 }
599 
600 void
601 cmd_inc_fill_column(struct buffer *buffer)
602 {
603 	if (fill_column == INT_MAX)
604 		return;
605 
606 	fill_column += 2;
607 	message("fill-column: %d", fill_column);
608 
609 	ui_schedule_redraw();
610 }
611 
612 void
613 cmd_dec_fill_column(struct buffer *buffer)
614 {
615 	if (fill_column == INT_MAX || fill_column < 8)
616 		return;
617 
618 	fill_column -= 2;
619 	message("fill-column: %d", fill_column);
620 
621 	ui_schedule_redraw();
622 }
623 
624 void
625 cmd_olivetti_mode(struct buffer *buffer)
626 {
627 	olivetti_mode = !olivetti_mode;
628 	if (olivetti_mode)
629 		message("olivetti-mode enabled");
630 	else
631 		message("olivetti-mode disabled");
632 
633 	ui_schedule_redraw();
634 }
635 
636 void
637 cmd_mini_delete_char(struct buffer *buffer)
638 {
639 	char *c, *n;
640 
641 	if (!in_minibuffer) {
642 		message("text is read-only");
643 		return;
644 	}
645 
646 	minibuffer_taint_hist();
647 
648 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
649 	if (*c == '\0')
650 		return;
651 	n = utf8_next_cp(c);
652 
653 	memmove(c, n, strlen(n)+1);
654 
655 	recompute_completions(0);
656 }
657 
658 void
659 cmd_mini_delete_backward_char(struct buffer *buffer)
660 {
661 	char *c, *p, *start;
662 
663 	if (!in_minibuffer) {
664 		message("text is read-only");
665 		return;
666 	}
667 
668 	minibuffer_taint_hist();
669 
670 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
671 	start = buffer->current_line->line;
672 	if (c == start)
673 		return;
674 	p = utf8_prev_cp(c-1, start);
675 
676 	memmove(p, c, strlen(c)+1);
677 	buffer->cpoff--;
678 
679 	recompute_completions(0);
680 }
681 
682 void
683 cmd_mini_kill_line(struct buffer *buffer)
684 {
685 	char *c;
686 
687 	if (!in_minibuffer) {
688 		message("text is read-only");
689 		return;
690 	}
691 
692 	minibuffer_taint_hist();
693 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
694 	*c = '\0';
695 
696 	recompute_completions(0);
697 }
698 
699 void
700 cmd_mini_abort(struct buffer *buffer)
701 {
702 	if (!in_minibuffer)
703 		return;
704 
705 	ministate.abortfn();
706 }
707 
708 void
709 cmd_mini_complete_and_exit(struct buffer *buffer)
710 {
711 	if (!in_minibuffer)
712 		return;
713 
714 	minibuffer_taint_hist();
715 	ministate.donefn();
716 }
717 
718 void
719 cmd_mini_previous_history_element(struct buffer *buffer)
720 {
721 	if (ministate.history == NULL) {
722 		message("No history");
723 		return;
724 	}
725 
726 	if (ministate.hist_cur == NULL ||
727 	    (ministate.hist_cur = TAILQ_PREV(ministate.hist_cur, mhisthead, entries)) == NULL) {
728 		ministate.hist_cur = TAILQ_LAST(&ministate.history->head, mhisthead);
729 		ministate.hist_off = ministate.history->len - 1;
730 		if (ministate.hist_cur == NULL)
731 			message("No prev history item");
732 	} else {
733 		ministate.hist_off--;
734 	}
735 
736 	if (ministate.hist_cur != NULL)
737 		buffer->current_line->line = ministate.hist_cur->h;
738 }
739 
740 void
741 cmd_mini_next_history_element(struct buffer *buffer)
742 {
743 	if (ministate.history == NULL) {
744 		message("No history");
745 		return;
746 	}
747 
748 	if (ministate.hist_cur == NULL ||
749 	    (ministate.hist_cur = TAILQ_NEXT(ministate.hist_cur, entries)) == NULL) {
750 		ministate.hist_cur = TAILQ_FIRST(&ministate.history->head);
751 		ministate.hist_off = 0;
752 		if (ministate.hist_cur == NULL)
753 			message("No next history item");
754 	} else {
755 		ministate.hist_off++;
756 	}
757 
758 	if (ministate.hist_cur != NULL)
759 		buffer->current_line->line = ministate.hist_cur->h;
760 }
761 
762 void
763 cmd_previous_completion(struct buffer *buffer)
764 {
765 	if (in_minibuffer != MB_COMPREAD)
766 		return;
767 
768 	buffer = &ministate.compl.buffer;
769 
770 	if (buffer->current_line != NULL)
771 		buffer->current_line->parent->type = LINE_COMPL;
772 
773 	forward_line(buffer, -1);
774 
775 	if (buffer->current_line != NULL)
776 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
777 }
778 
779 void
780 cmd_next_completion(struct buffer *buffer)
781 {
782 	if (in_minibuffer != MB_COMPREAD)
783 		return;
784 
785 	buffer = &ministate.compl.buffer;
786 
787 	if (buffer->current_line != NULL)
788 		buffer->current_line->parent->type = LINE_COMPL;
789 
790 	forward_line(buffer, +1);
791 
792 	if (buffer->current_line != NULL)
793 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
794 }
795 
796 void
797 cmd_insert_current_candidate(struct buffer *buffer)
798 {
799 	struct vline *vl;
800 
801 	if (in_minibuffer != MB_COMPREAD)
802 		return;
803 
804 	buffer = &ministate.compl.buffer;
805 	if ((vl = buffer->current_line) == NULL)
806 		return;
807 
808 	minibuffer_taint_hist();
809 	strlcpy(ministate.buf, vl->parent->line, sizeof(ministate.buf));
810 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
811 }