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Date:: Tue Aug 16 17:01:41 2022 UTC
Message:: wip'n'crude: open downloads with xdg-open
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 "compat.h"
18 
19 #include <limits.h>
20 #include <stdlib.h>
21 #include <string.h>
22 
23 #include "compl.h"
24 #include "defaults.h"
25 #include "mcache.h"
26 #include "minibuffer.h"
27 #include "session.h"
28 #include "telescope.h"
29 #include "ui.h"
30 #include "utf8.h"
31 #include "utils.h"
32 
33 #define GUARD_RECURSIVE_MINIBUFFER()				\
34 	do {							\
35 		if (in_minibuffer) {				\
36 			message("enable-recursive-minibuffers " \
37 			    "is not yet available.");		\
38 			return;					\
39 		}						\
40 	} while(0)
41 
42 #define GUARD_READ_ONLY()				\
43 	do {						\
44 		if (!in_minibuffer) {			\
45 			message("text is read-only");	\
46 			return;				\
47 		}					\
48 	} while(0)
49 
50 /* return 1 if moved, 0 otherwise */
51 static inline int
52 forward_line(struct buffer *buffer, int n)
53 {
54 	struct vline *vl;
55 	int did;
56 
57 	if (buffer->current_line == NULL)
58 		return 0;
59 	vl = buffer->current_line;
60 
61 	did = 0;
62 	while (n != 0) {
63 		if (n > 0) {
64 			vl = TAILQ_NEXT(vl, vlines);
65 			if (vl == NULL)
66 				return did;
67 			if (vl->parent->flags & L_HIDDEN)
68 				continue;
69 			buffer->current_line = vl;
70 			n--;
71 		} else {
72 			vl = TAILQ_PREV(vl, vhead, vlines);
73 			if (vl == NULL)
74 				return did;
75 			if (vl->parent->flags & L_HIDDEN)
76 				continue;
77 			if (buffer->current_line == buffer->top_line) {
78 				buffer->line_off--;
79 				buffer->top_line = vl;
80 			}
81 			buffer->current_line = vl;
82 			n++;
83 		}
84 
85 		did = 1;
86 	}
87 
88 	return did;
89 }
90 
91 void
92 cmd_previous_line(struct buffer *buffer)
93 {
94 	forward_line(buffer, -1);
95 }
96 
97 void
98 cmd_next_line(struct buffer *buffer)
99 {
100 	forward_line(buffer, +1);
101 }
102 
103 void
104 cmd_backward_char(struct buffer *buffer)
105 {
106 	if (buffer->cpoff != 0)
107 		buffer->cpoff--;
108 }
109 
110 void
111 cmd_forward_char(struct buffer *buffer)
112 {
113 	size_t len = 0;
114 
115 	if (buffer->current_line == NULL)
116 		return;
117 
118 	if (buffer->current_line->line != NULL)
119 		len = utf8_cplen(buffer->current_line->line);
120 	if (++buffer->cpoff > len)
121 		buffer->cpoff = len;
122 }
123 
124 void
125 cmd_backward_paragraph(struct buffer *buffer)
126 {
127 	do {
128 		if (!forward_line(buffer, -1)) {
129 			message("No previous paragraph");
130 			return;
131 		}
132 	} while (buffer->current_line->line != NULL ||
133 	    buffer->current_line->parent->type != LINE_TEXT);
134 }
135 
136 void
137 cmd_forward_paragraph(struct buffer *buffer)
138 {
139 	do {
140 		if (!forward_line(buffer, +1)) {
141 			message("No next paragraph");
142 			return;
143 		}
144 	} while (buffer->current_line->line != NULL ||
145 	    buffer->current_line->parent->type != LINE_TEXT);
146 }
147 
148 void
149 cmd_move_beginning_of_line(struct buffer *buffer)
150 {
151 	buffer->cpoff = 0;
152 }
153 
154 void
155 cmd_move_end_of_line(struct buffer *buffer)
156 {
157 	struct vline	*vl;
158 
159 	vl = buffer->current_line;
160 	if (vl == NULL || vl->line == NULL)
161 		return;
162 	buffer->cpoff = utf8_cplen(vl->line);
163 }
164 
165 void
166 cmd_redraw(struct buffer *buffer)
167 {
168 	ui_schedule_redraw();
169 }
170 
171 void
172 cmd_scroll_line_up(struct buffer *buffer)
173 {
174 	struct vline	*vl;
175 
176 	for (;;) {
177 		if (buffer->top_line == NULL)
178 			return;
179 
180 		if ((vl = TAILQ_PREV(buffer->top_line, vhead, vlines))
181 		    == NULL)
182 			return;
183 
184 		buffer->top_line = vl;
185 
186 		if (vl->parent->flags & L_HIDDEN)
187 			continue;
188 
189 		break;
190 	}
191 
192 	buffer->line_off--;
193 
194 	forward_line(buffer, -1);
195 }
196 
197 void
198 cmd_scroll_line_down(struct buffer *buffer)
199 {
200 	if (!forward_line(buffer, +1))
201 		return;
202 
203 	for (;;) {
204 		if (buffer->top_line == NULL)
205 			return;
206 
207 		buffer->top_line = TAILQ_NEXT(buffer->top_line, vlines);
208 		if (buffer->top_line->parent->flags & L_HIDDEN)
209 			continue;
210 		break;
211 	}
212 
213 	buffer->line_off++;
214 }
215 
216 void
217 cmd_scroll_up(struct buffer *buffer)
218 {
219 	struct vline	*vl;
220 	int		 i;
221 
222 	if (buffer->top_line == NULL)
223 		return;
224 
225 	for (i = 0; i < body_lines; ++i) {
226 		vl = TAILQ_PREV(buffer->top_line, vhead, vlines);
227 		if (vl == NULL)
228 			break;
229 		buffer->line_off--;
230 		buffer->top_line = vl;
231 		forward_line(buffer, -1);
232 	}
233 }
234 
235 void
236 cmd_scroll_down(struct buffer *buffer)
237 {
238 	int i;
239 
240 	if (buffer->top_line == NULL)
241 		return;
242 
243 	for (i = 0; i < body_lines; ++i) {
244 		if (!forward_line(buffer, +1))
245 			break;
246 
247 		buffer->top_line = TAILQ_NEXT(buffer->top_line,
248 		    vlines);
249 		buffer->line_off++;
250 	}
251 }
252 
253 void
254 cmd_beginning_of_buffer(struct buffer *buffer)
255 {
256 	buffer->current_line = TAILQ_FIRST(&buffer->head);
257 	buffer->cpoff = 0;
258 	buffer->top_line = buffer->current_line;
259 	buffer->line_off = 0;
260 }
261 
262 void
263 cmd_end_of_buffer(struct buffer *buffer)
264 {
265 	buffer->current_line = TAILQ_LAST(&buffer->head, vhead);
266 
267 	if (buffer->current_line == NULL)
268 		return;
269 
270 	/* deal with invisible lines */
271 	if (buffer->current_line->parent->flags & L_HIDDEN)
272 		forward_line(buffer, -1);
273 
274 	cmd_move_end_of_line(buffer);
275 }
276 
277 static void
278 kill_telescope_cb(int r, struct tab *tab)
279 {
280 	if (r) {
281 		save_session();
282 		event_loopbreak();
283 	}
284 }
285 
286 void
287 cmd_kill_telescope(struct buffer *buffer)
288 {
289 	yornp("really quit?", kill_telescope_cb, NULL);
290 }
291 
292 #include <curses.h>
293 #include <unistd.h>
294 #include <sys/wait.h>
295 #include <errno.h>
296 static void
297 do_exec_command(const char *cmd, struct tab *t)
298 {
299 	int s;
300 	pid_t p;
301 
302 	if (cmd == NULL)
303 		return;
304 
305 	endwin();
306 
307 	switch (p = fork()) {
308 	case -1:
309 		message("failed to fork: %s", strerror(errno));
310 		return;
311 	case 0:
312 		execl("/bin/sh", "sh", "-c", cmd, NULL);
313 		warn("exec \"%s\" failed", cmd);
314 		_exit(1);
315 	}
316 
317 again:
318 	if (waitpid(p, &s, 0) == -1) {
319 		if (errno == EINTR)
320 			goto again;
321 	}
322 
323 	refresh();
324 	clear();
325 	ui_schedule_redraw();
326 	/* rearrange_windows(); */
327 }
328 
329 void
330 cmd_push_button(struct buffer *buffer)
331 {
332 	struct vline	*vl;
333 	struct line	*l;
334 
335 	vl = buffer->current_line;
336 
337 	if (vl == NULL)
338 		return;
339 
340 	switch (vl->parent->type) {
341 	case LINE_LINK:
342 		load_url_in_tab(current_tab, vl->parent->alt, NULL,
343 		    LU_MODE_NOCACHE);
344 		break;
345 	case LINE_PRE_START:
346 		l = TAILQ_NEXT(vl->parent, lines);
347 		for (; l != NULL; l = TAILQ_NEXT(l, lines)) {
348 			if (l->type == LINE_PRE_END)
349 				break;
350 			l->flags ^= L_HIDDEN;
351 			if (l->flags & L_HIDDEN)
352 				buffer->line_max--;
353 			else
354 				buffer->line_max++;
355 		}
356 		break;
357 	case LINE_DOWNLOAD:
358 	case LINE_DOWNLOAD_DONE:
359 		minibuffer_read("Execute: ", do_exec_command,
360 		    NULL);
361 		snprintf(ministate.buf, sizeof(ministate.buf),
362 		    "xdg-open %s", vl->parent->alt);
363 		break;
364 	default:
365 		break;
366 	}
367 }
368 
369 void
370 cmd_push_button_new_tab(struct buffer *buffer)
371 {
372 	struct vline	*vl;
373 
374 	vl = buffer->current_line;
375 	if (vl == NULL || vl->parent->type != LINE_LINK)
376 		return;
377 
378 	new_tab(vl->parent->alt, current_tab->hist_cur->h, current_tab);
379 }
380 
381 void
382 cmd_previous_button(struct buffer *buffer)
383 {
384 	struct excursion place;
385 
386 	save_excursion(&place, buffer);
387 
388 	do {
389 		if (!forward_line(buffer, -1)) {
390 			restore_excursion(&place, buffer);
391 			message("No previous link");
392 			return;
393 		}
394 	} while (buffer->current_line->parent->type != LINE_LINK);
395 }
396 
397 void
398 cmd_next_button(struct buffer *buffer)
399 {
400 	struct excursion place;
401 
402 	save_excursion(&place, buffer);
403 
404 	do {
405 		if (!forward_line(buffer, +1)){
406 			restore_excursion(&place, buffer);
407 			message("No next link");
408 			return;
409 		}
410 	} while (buffer->current_line->parent->type != LINE_LINK);
411 }
412 
413 static inline int
414 is_heading(const struct line *l)
415 {
416 	return l->type == LINE_TITLE_1 ||
417 		l->type == LINE_TITLE_2 ||
418 		l->type == LINE_TITLE_3;
419 }
420 
421 void
422 cmd_previous_heading(struct buffer *buffer)
423 {
424 	struct excursion place;
425 
426 	save_excursion(&place, buffer);
427 
428 	do {
429 		if (!forward_line(buffer, -1)) {
430 			restore_excursion(&place, buffer);
431 			message("No previous heading");
432 			return;
433 		}
434 	} while (!is_heading(buffer->current_line->parent));
435 }
436 
437 void
438 cmd_next_heading(struct buffer *buffer)
439 {
440 	struct excursion place;
441 
442 	save_excursion(&place, buffer);
443 
444 	do {
445 		if (!forward_line(buffer, +1)) {
446 			restore_excursion(&place, buffer);
447 			message("No next heading");
448 			return;
449 		}
450 	} while (!is_heading(buffer->current_line->parent));
451 }
452 
453 void
454 cmd_previous_page(struct buffer *buffer)
455 {
456 	if (!load_previous_page(current_tab))
457 		message("No previous page");
458 }
459 
460 void
461 cmd_next_page(struct buffer *buffer)
462 {
463 	if (!load_next_page(current_tab))
464 		message("No next page");
465 }
466 
467 void
468 cmd_clear_minibuf(struct buffer *buffer)
469 {
470 	message(NULL);
471 }
472 
473 void
474 cmd_execute_extended_command(struct buffer *buffer)
475 {
476 	size_t	 len;
477 
478 	GUARD_RECURSIVE_MINIBUFFER();
479 
480 	enter_minibuffer(sensible_self_insert, eecmd_select, exit_minibuffer,
481 	    &eecmd_history, compl_eecmd, NULL, 1);
482 
483 	len = sizeof(ministate.prompt);
484 	strlcpy(ministate.prompt, "", len);
485 
486 	if (thiskey.meta)
487 		strlcat(ministate.prompt, "M-", len);
488 
489 	strlcat(ministate.prompt, ui_keyname(thiskey.key), len);
490 
491 	if (thiskey.meta)
492 		strlcat(ministate.prompt, " ", len);
493 }
494 
495 void
496 cmd_tab_close(struct buffer *buffer)
497 {
498 	struct tab *tab, *t;
499 
500 	tab = current_tab;
501 
502 	if ((t = TAILQ_NEXT(tab, tabs)) != NULL ||
503 	    (t = TAILQ_PREV(tab, tabshead, tabs)) != NULL) {
504 		switch_to_tab(t);
505 		kill_tab(tab, 0);
506 	} else
507 		message("Can't close the only tab.");
508 
509 }
510 
511 void
512 cmd_tab_close_other(struct buffer *buffer)
513 {
514 	struct tab *t, *i;
515 
516 	TAILQ_FOREACH_SAFE(t, &tabshead, tabs, i) {
517 		if (t == current_tab)
518 			continue;
519 
520 		kill_tab(t, 0);
521 	}
522 }
523 
524 void
525 cmd_tab_undo_close(struct buffer *buffer)
526 {
527 	struct tab *t;
528 
529 	if ((t = unkill_tab()) == NULL) {
530 		message("No recently-closed tabs");
531 		return;
532 	}
533 
534 	switch_to_tab(t);
535 }
536 
537 void
538 cmd_tab_new(struct buffer *buffer)
539 {
540 	const char *url;
541 
542 	if ((url = new_tab_url) == NULL)
543 		url = NEW_TAB_URL;
544 
545 	new_tab(url, NULL, NULL);
546 }
547 
548 void
549 cmd_tab_next(struct buffer *buffer)
550 {
551 	struct tab *t;
552 
553 	if ((t = TAILQ_NEXT(current_tab, tabs)) == NULL)
554 		t = TAILQ_FIRST(&tabshead);
555 	switch_to_tab(t);
556 }
557 
558 void
559 cmd_tab_previous(struct buffer *buffer)
560 {
561 	struct tab *t;
562 
563 	if ((t = TAILQ_PREV(current_tab, tabshead, tabs)) == NULL)
564 		t = TAILQ_LAST(&tabshead, tabshead);
565 	switch_to_tab(t);
566 }
567 
568 void
569 cmd_tab_move(struct buffer *buffer)
570 {
571 	struct tab *t;
572 
573 	t = TAILQ_NEXT(current_tab, tabs);
574 	TAILQ_REMOVE(&tabshead, current_tab, tabs);
575 
576 	if (t == NULL)
577 		TAILQ_INSERT_HEAD(&tabshead, current_tab, tabs);
578 	else
579 		TAILQ_INSERT_AFTER(&tabshead, t, current_tab, tabs);
580 }
581 
582 void
583 cmd_tab_move_to(struct buffer *buffer)
584 {
585 	struct tab *t;
586 
587 	t = TAILQ_PREV(current_tab, tabshead, tabs);
588 	TAILQ_REMOVE(&tabshead, current_tab, tabs);
589 
590 	if (t == NULL)
591 		TAILQ_INSERT_TAIL(&tabshead, current_tab, tabs);
592 	else
593 		TAILQ_INSERT_BEFORE(t, current_tab, tabs);
594 }
595 
596 void
597 cmd_tab_select(struct buffer *buffer)
598 {
599 	GUARD_RECURSIVE_MINIBUFFER();
600 
601 	enter_minibuffer(sensible_self_insert, ts_select, exit_minibuffer,
602 	    NULL, compl_ts, NULL, 1);
603 	strlcpy(ministate.prompt, "Select tab: ", sizeof(ministate.prompt));
604 }
605 
606 void
607 cmd_load_url(struct buffer *buffer)
608 {
609 	GUARD_RECURSIVE_MINIBUFFER();
610 
611 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
612 	    &lu_history, compl_lu, NULL, 0);
613 	strlcpy(ministate.prompt, "Load URL: ", sizeof(ministate.prompt));
614 }
615 
616 void
617 cmd_load_current_url(struct buffer *buffer)
618 {
619 	GUARD_RECURSIVE_MINIBUFFER();
620 
621 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
622 	    &lu_history, compl_lu, NULL, 0);
623 	strlcpy(ministate.prompt, "Load URL: ", sizeof(ministate.prompt));
624 	strlcpy(ministate.buf, current_tab->hist_cur->h, sizeof(ministate.buf));
625 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
626 }
627 
628 void
629 cmd_reload_page(struct buffer *buffer)
630 {
631 	load_url_in_tab(current_tab, current_tab->hist_cur->h, NULL,
632 	    LU_MODE_NOHIST|LU_MODE_NOCACHE);
633 }
634 
635 void
636 cmd_bookmark_page(struct buffer *buffer)
637 {
638 	GUARD_RECURSIVE_MINIBUFFER();
639 
640 	enter_minibuffer(sensible_self_insert, bp_select, exit_minibuffer, NULL,
641 	    NULL, NULL, 0);
642 	strlcpy(ministate.prompt, "Bookmark URL: ", sizeof(ministate.prompt));
643 	strlcpy(ministate.buf, current_tab->hist_cur->h, sizeof(ministate.buf));
644 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
645 }
646 
647 void
648 cmd_list_bookmarks(struct buffer *buffer)
649 {
650 	load_url_in_tab(current_tab, "about:bookmarks", NULL, LU_MODE_NONE);
651 }
652 
653 void
654 cmd_toggle_help(struct buffer *buffer)
655 {
656 	ui_toggle_side_window(SIDE_WINDOW_LEFT);
657 }
658 
659 void
660 cmd_link_select(struct buffer *buffer)
661 {
662 	struct line *l;
663 
664 	GUARD_RECURSIVE_MINIBUFFER();
665 
666 	l = TAILQ_FIRST(&buffer->page.head);
667 	while (l != NULL && l->type != LINE_LINK)
668 		l = TAILQ_NEXT(l, lines);
669 
670 	if (l == NULL) {
671 		message("No links found");
672 		return;
673 	}
674 
675 	enter_minibuffer(sensible_self_insert, ls_select, exit_minibuffer,
676 	    NULL, compl_ls, l, 1);
677 	strlcpy(ministate.prompt, "Select link: ", sizeof(ministate.prompt));
678 }
679 
680 void
681 cmd_swiper(struct buffer *buffer)
682 {
683 	GUARD_RECURSIVE_MINIBUFFER();
684 
685 	enter_minibuffer(sensible_self_insert, swiper_select, exit_minibuffer,
686 	    NULL, compl_swiper, TAILQ_FIRST(&buffer->page.head), 1);
687 	strlcpy(ministate.prompt, "Select line: ", sizeof(ministate.prompt));
688 }
689 
690 void
691 cmd_toc(struct buffer *buffer)
692 {
693 	struct line *l;
694 
695 	GUARD_RECURSIVE_MINIBUFFER();
696 
697 	l = TAILQ_FIRST(&buffer->page.head);
698 	while (l != NULL &&
699 	    l->type != LINE_TITLE_1 &&
700 	    l->type != LINE_TITLE_2 &&
701 	    l->type != LINE_TITLE_3)
702 		l = TAILQ_NEXT(l, lines);
703 
704 	if (l == NULL) {
705 		message("No headings found");
706 		return;
707 	}
708 
709 	enter_minibuffer(sensible_self_insert, toc_select, exit_minibuffer,
710 	    NULL, compl_toc, l, 1);
711 	strlcpy(ministate.prompt, "Select heading: ",
712 	    sizeof(ministate.prompt));
713 }
714 
715 void
716 cmd_inc_fill_column(struct buffer *buffer)
717 {
718 	if (fill_column == INT_MAX)
719 		return;
720 
721 	fill_column += 2;
722 	message("fill-column: %d", fill_column);
723 
724 	ui_schedule_redraw();
725 }
726 
727 void
728 cmd_dec_fill_column(struct buffer *buffer)
729 {
730 	if (fill_column == INT_MAX || fill_column < 8)
731 		return;
732 
733 	fill_column -= 2;
734 	message("fill-column: %d", fill_column);
735 
736 	ui_schedule_redraw();
737 }
738 
739 void
740 cmd_olivetti_mode(struct buffer *buffer)
741 {
742 	olivetti_mode = !olivetti_mode;
743 	if (olivetti_mode)
744 		message("olivetti-mode enabled");
745 	else
746 		message("olivetti-mode disabled");
747 
748 	ui_schedule_redraw();
749 }
750 
751 void
752 cmd_mini_delete_char(struct buffer *buffer)
753 {
754 	char *c, *n;
755 
756 	GUARD_READ_ONLY();
757 
758 	minibuffer_taint_hist();
759 
760 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
761 	if (*c == '\0')
762 		return;
763 	n = utf8_next_cp(c);
764 
765 	memmove(c, n, strlen(n)+1);
766 
767 	recompute_completions(0);
768 }
769 
770 void
771 cmd_mini_delete_backward_char(struct buffer *buffer)
772 {
773 	char *c, *p, *start;
774 
775 	GUARD_READ_ONLY();
776 
777 	minibuffer_taint_hist();
778 
779 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
780 	start = buffer->current_line->line;
781 	if (c == start)
782 		return;
783 	p = utf8_prev_cp(c-1, start);
784 
785 	memmove(p, c, strlen(c)+1);
786 	buffer->cpoff--;
787 
788 	recompute_completions(0);
789 }
790 
791 void
792 cmd_mini_kill_line(struct buffer *buffer)
793 {
794 	char *c;
795 
796 	GUARD_READ_ONLY();
797 
798 	minibuffer_taint_hist();
799 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
800 	*c = '\0';
801 
802 	recompute_completions(0);
803 }
804 
805 void
806 cmd_mini_kill_whole_line(struct buffer *buffer)
807 {
808 	GUARD_READ_ONLY();
809 
810 	minibuffer_taint_hist();
811 	*buffer->current_line->line = '\0';
812 	buffer->cpoff = 0;
813 }
814 
815 void
816 cmd_mini_abort(struct buffer *buffer)
817 {
818 	if (!in_minibuffer)
819 		return;
820 
821 	ministate.abortfn();
822 }
823 
824 void
825 cmd_mini_complete_and_exit(struct buffer *buffer)
826 {
827 	struct vline *vl;
828 
829 	if (!in_minibuffer)
830 		return;
831 
832 	if (ministate.compl.must_select && ministate.hist_cur == NULL) {
833 		vl = ministate.compl.buffer.current_line;
834 		if (vl == NULL || vl->parent->flags & L_HIDDEN ||
835 		    vl->parent->type == LINE_COMPL) {
836 			message("no match");
837 			return;
838 		}
839 	}
840 
841 	minibuffer_taint_hist();
842 	ministate.donefn();
843 }
844 
845 void
846 cmd_mini_previous_history_element(struct buffer *buffer)
847 {
848 	if (ministate.history == NULL) {
849 		message("No history");
850 		return;
851 	}
852 
853 	if (ministate.hist_cur == NULL ||
854 	    (ministate.hist_cur = TAILQ_PREV(ministate.hist_cur, mhisthead, entries)) == NULL) {
855 		ministate.hist_cur = TAILQ_LAST(&ministate.history->head, mhisthead);
856 		ministate.hist_off = ministate.history->len - 1;
857 		if (ministate.hist_cur == NULL)
858 			message("No prev history item");
859 	} else {
860 		ministate.hist_off--;
861 	}
862 
863 	if (ministate.hist_cur != NULL) {
864 		buffer->current_line->line = ministate.hist_cur->h;
865 		recompute_completions(0);
866 	}
867 }
868 
869 void
870 cmd_mini_next_history_element(struct buffer *buffer)
871 {
872 	if (ministate.history == NULL) {
873 		message("No history");
874 		return;
875 	}
876 
877 	if (ministate.hist_cur == NULL ||
878 	    (ministate.hist_cur = TAILQ_NEXT(ministate.hist_cur, entries)) == NULL) {
879 		ministate.hist_cur = TAILQ_FIRST(&ministate.history->head);
880 		ministate.hist_off = 0;
881 		if (ministate.hist_cur == NULL)
882 			message("No next history item");
883 	} else {
884 		ministate.hist_off++;
885 	}
886 
887 	if (ministate.hist_cur != NULL) {
888 		buffer->current_line->line = ministate.hist_cur->h;
889 		recompute_completions(0);
890 	}
891 }
892 
893 void
894 cmd_previous_completion(struct buffer *buffer)
895 {
896 	if (in_minibuffer != MB_COMPREAD)
897 		return;
898 
899 	buffer = &ministate.compl.buffer;
900 	if (buffer->current_line == NULL)
901 		return;
902 
903 	buffer->current_line->parent->type = LINE_COMPL;
904 	if (!forward_line(buffer, -1))
905 		buffer->current_line->parent->type = LINE_COMPL;
906 	else
907 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
908 }
909 
910 void
911 cmd_next_completion(struct buffer *buffer)
912 {
913 	if (in_minibuffer != MB_COMPREAD)
914 		return;
915 
916 	buffer = &ministate.compl.buffer;
917 	if (buffer->current_line == NULL)
918 		return;
919 
920 	if (buffer->current_line->parent->type == LINE_COMPL_CURRENT) {
921 		buffer->current_line->parent->type = LINE_COMPL;
922 		forward_line(buffer, +1);
923 	}
924 
925 	if (buffer->current_line != NULL)
926 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
927 }
928 
929 void
930 cmd_insert_current_candidate(struct buffer *buffer)
931 {
932 	if (in_minibuffer != MB_COMPREAD)
933 		return;
934 
935 	minibuffer_insert_current_candidate();
936 }
937 
938 void
939 cmd_suspend_telescope(struct buffer *buffer)
940 {
941 	message("Zzz...");
942 	ui_suspend();
943 }
944 
945 void
946 cmd_toggle_pre_wrap(struct buffer *buffer)
947 {
948 	dont_wrap_pre = !dont_wrap_pre;
949 
950 	if (dont_wrap_pre)
951 		message("Don't wrap preformatted blocks");
952 	else
953 		message("Wrap preformatted blocks");
954 
955 	ui_schedule_redraw();
956 }
957 
958 void
959 cmd_mini_goto_beginning(struct buffer *buffer)
960 {
961 	struct vline *vl;
962 
963 	if (!in_minibuffer)
964 		return;
965 
966 	buffer = &ministate.compl.buffer;
967 
968 	if ((vl = buffer->current_line) != NULL)
969 		vl->parent->type = LINE_COMPL;
970 
971 	vl = TAILQ_FIRST(&buffer->head);
972 	while (vl != NULL && vl->parent->flags & L_HIDDEN)
973 		vl = TAILQ_NEXT(vl, vlines);
974 
975 	if (vl == NULL)
976 		return;
977 
978 	vl->parent->type = LINE_COMPL_CURRENT;
979 	buffer->top_line = vl;
980 	buffer->current_line = vl;
981 }
982 
983 void
984 cmd_mini_goto_end(struct buffer *buffer)
985 {
986 	struct vline *vl;
987 
988 	if (!in_minibuffer)
989 		return;
990 
991 	buffer = &ministate.compl.buffer;
992 
993 	if ((vl = buffer->current_line) != NULL)
994 		vl->parent->type = LINE_COMPL;
995 
996 	vl = TAILQ_LAST(&buffer->head, vhead);
997 	while (vl != NULL && vl->parent->flags & L_HIDDEN)
998 		vl = TAILQ_PREV(vl, vhead, vlines);
999 
1000 	if (vl == NULL)
1001 		return;
1002 
1003 	vl->parent->type = LINE_COMPL_CURRENT;
1004 	buffer->current_line = vl;
1005 }
1006 
1007 void
1008 cmd_other_window(struct buffer *buffer)
1009 {
1010 	ui_other_window();
1011 }
1012 
1013 void
1014 cmd_mini_scroll_up(struct buffer *buffer)
1015 {
1016 	if (!in_minibuffer)
1017 		return;
1018 
1019 	buffer = &ministate.compl.buffer;
1020 	if (buffer->current_line == NULL)
1021 		return;
1022 
1023 	buffer->current_line->parent->type = LINE_COMPL;
1024 	cmd_scroll_up(buffer);
1025 	buffer->current_line->parent->type = LINE_COMPL_CURRENT;
1026 }
1027 
1028 void
1029 cmd_mini_scroll_down(struct buffer *buffer)
1030 {
1031 	if (!in_minibuffer)
1032 		return;
1033 
1034 	buffer = &ministate.compl.buffer;
1035 	if (buffer->current_line == NULL)
1036 		return;
1037 
1038 	buffer->current_line->parent->type = LINE_COMPL;
1039 	cmd_scroll_down(buffer);
1040 	buffer->current_line->parent->type = LINE_COMPL_CURRENT;
1041 }
1042 
1043 void
1044 cmd_toggle_downloads(struct buffer *buffer)
1045 {
1046 	ui_toggle_side_window(SIDE_WINDOW_BOTTOM);
1047 }
1048 
1049 void
1050 cmd_cache_info(struct buffer *buffer)
1051 {
1052 	size_t	npages, tot;
1053 	char	fmt[FMT_SCALED_STRSIZE];
1054 
1055 	mcache_info(&npages, &tot);
1056 
1057 	if (fmt_scaled(tot, fmt) == 0)
1058 		message("pages: %zu, total: %s", npages, fmt);
1059 	else
1060 		message("pages: %zu, total: %zu", npages, tot);
1061 }
1062 
1063 void
1064 cmd_reply_last_input(struct buffer *buffer)
1065 {
1066 	GUARD_RECURSIVE_MINIBUFFER();
1067 
1068 	if (current_tab->last_input_url == NULL) {
1069 		message("there was no previous input request in this tab");
1070 		return;
1071 	}
1072 
1073 	if (!strncmp(current_tab->last_input_url, "gopher", 6)) {
1074 		load_url_in_tab(current_tab, current_tab->last_input_url,
1075 		    NULL, LU_MODE_NOCACHE);
1076 		return;
1077 	}
1078 
1079 	message("%s", current_tab->last_input_url);
1080 	ui_require_input(current_tab, 0, ir_select_reply);
1081 }
1082 
1083 void
1084 cmd_write_buffer(struct buffer *buffer)
1085 {
1086 	const char *f, *url;
1087 	char path[PATH_MAX];
1088 
1089 	GUARD_RECURSIVE_MINIBUFFER();
1090 
1091 	if (safe_mode) {
1092 		message("Can't write buffer in safe-mode.");
1093 		return;
1094 	}
1095 
1096 	url = current_tab->hist_cur->h;
1097 
1098 	if ((f = strrchr(url, '/')) != NULL)
1099 		f++;
1100 	if (f == NULL || *f == '\0') {
1101 		/* guess a decent file name based on the protocol used */
1102 		if (!strncmp(url, "gemini://", 9))
1103 			f = "index.gmi";
1104 		else
1105 			f = "index.txt";
1106 	}
1107 
1108 	strlcpy(path, download_path, sizeof(path));
1109 	strlcat(path, f, sizeof(path));
1110 
1111 	ui_read("Write file", write_buffer, current_tab, path);
1112 }