1/*	$NetBSD: color.c,v 1.47 2022/10/19 06:09:27 blymn Exp $	*/
2
3/*
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Julian Coleman.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34__RCSID("$NetBSD: color.c,v 1.47 2022/10/19 06:09:27 blymn Exp $");
35#endif				/* not lint */
36
37#include "curses.h"
38#include "curses_private.h"
39
40/* Have we initialised colours? */
41int	__using_color = 0;
42int	__do_color_init = 0; /* force refresh to init color in all cells */
43
44/* Default colour number */
45attr_t	__default_color = 0;
46
47/* Default colour pair values - white on black. */
48struct __pair	__default_pair = {COLOR_WHITE, COLOR_BLACK, 0};
49
50/* Default colour values */
51/* Flags for colours and pairs */
52#define	__USED		0x01
53
54static void
55__change_pair(short);
56
57static int
58init_color_value(short, short, short, short);
59
60/*
61 * has_colors --
62 *	Check if terminal has colours.
63 */
64bool
65has_colors(void)
66{
67	if (max_colors > 0 && max_pairs > 0 &&
68	    ((set_a_foreground != NULL && set_a_background != NULL) ||
69		initialize_pair != NULL || initialize_color != NULL ||
70		(set_background != NULL && set_foreground != NULL)))
71		return true;
72	else
73		return false;
74}
75
76/*
77 * can_change_color --
78 *	Check if terminal can change colours.
79 */
80bool
81can_change_color(void)
82{
83	return can_change ? true : false;
84}
85
86/*
87 * start_color --
88 *	Initialise colour support.
89 */
90int
91start_color(void)
92{
93	int			 i;
94	attr_t			 temp_nc;
95	struct __winlist	*wlp;
96	WINDOW			*win;
97	int			 y, x;
98
99	if (has_colors() == FALSE)
100		return ERR;
101
102	/* Max colours and colour pairs */
103	if (max_colors == -1)
104		COLORS = 0;
105	else {
106		COLORS = max_colors > MAX_COLORS ? MAX_COLORS : max_colors;
107		if (max_pairs == -1) {
108			COLOR_PAIRS = 0;
109			COLORS = 0;
110		} else {
111			COLOR_PAIRS = (max_pairs > MAX_PAIRS - 1 ?
112			    MAX_PAIRS - 1 : max_pairs);
113			 /* Use the last colour pair for curses default. */
114#ifdef __OLD_DEFAULT_COLOR
115			__default_color = COLOR_PAIR(MAX_PAIRS - 1);
116#else
117			__default_color = COLOR_PAIR(0);
118#endif
119		}
120	}
121	if (!COLORS)
122		return ERR;
123
124	_cursesi_screen->COLORS = COLORS;
125	_cursesi_screen->COLOR_PAIRS = COLOR_PAIRS;
126
127	/* Reset terminal colour and colour pairs. */
128	if (orig_colors != NULL)
129		tputs(orig_colors, 0, __cputchar);
130	if (orig_pair != NULL) {
131		tputs(orig_pair, 0, __cputchar);
132		curscr->wattr &= _cursesi_screen->mask_op;
133	}
134
135	/* Type of colour manipulation - ANSI/TEK/HP/other */
136	if (set_a_foreground != NULL && set_a_background != NULL)
137		_cursesi_screen->color_type = COLOR_ANSI;
138	else if (initialize_pair != NULL)
139		_cursesi_screen->color_type = COLOR_HP;
140	else if (initialize_color != NULL)
141		_cursesi_screen->color_type = COLOR_TEK;
142	else if (set_foreground != NULL && set_background != NULL)
143		_cursesi_screen->color_type = COLOR_OTHER;
144	else
145		return(ERR);		/* Unsupported colour method */
146
147#ifdef DEBUG
148	__CTRACE(__CTRACE_COLOR, "start_color: COLORS = %d, COLOR_PAIRS = %d",
149	    COLORS, COLOR_PAIRS);
150	switch (_cursesi_screen->color_type) {
151	case COLOR_ANSI:
152		__CTRACE(__CTRACE_COLOR, " (ANSI style)\n");
153		break;
154	case COLOR_HP:
155		__CTRACE(__CTRACE_COLOR, " (HP style)\n");
156		break;
157	case COLOR_TEK:
158		__CTRACE(__CTRACE_COLOR, " (Tektronics style)\n");
159		break;
160	case COLOR_OTHER:
161		__CTRACE(__CTRACE_COLOR, " (Other style)\n");
162		break;
163	}
164#endif
165
166	/*
167	 * Attributes that cannot be used with color.
168	 * Store these in an attr_t for wattrset()/wattron().
169	 */
170	_cursesi_screen->nca = __NORMAL;
171	if (no_color_video != -1) {
172		temp_nc = (attr_t)t_no_color_video(_cursesi_screen->term);
173		if (temp_nc & 0x0001)
174			_cursesi_screen->nca |= __STANDOUT;
175		if (temp_nc & 0x0002)
176			_cursesi_screen->nca |= __UNDERSCORE;
177		if (temp_nc & 0x0004)
178			_cursesi_screen->nca |= __REVERSE;
179		if (temp_nc & 0x0008)
180			_cursesi_screen->nca |= __BLINK;
181		if (temp_nc & 0x0010)
182			_cursesi_screen->nca |= __DIM;
183		if (temp_nc & 0x0020)
184			_cursesi_screen->nca |= __BOLD;
185		if (temp_nc & 0x0040)
186			_cursesi_screen->nca |= __BLANK;
187		if (temp_nc & 0x0080)
188			_cursesi_screen->nca |= __PROTECT;
189		if (temp_nc & 0x0100)
190			_cursesi_screen->nca |= __ALTCHARSET;
191	}
192	__CTRACE(__CTRACE_COLOR, "start_color: _cursesi_screen->nca = %08x\n",
193	    _cursesi_screen->nca);
194
195	/* Set up initial 8 colours */
196#define	RGB_ON	680	/* Allow for bright colours */
197	if (COLORS >= COLOR_BLACK)
198		(void)init_color_value(COLOR_BLACK, 0, 0, 0);
199	if (COLORS >= COLOR_RED)
200		(void)init_color_value(COLOR_RED, RGB_ON, 0, 0);
201	if (COLORS >= COLOR_GREEN)
202		(void)init_color_value(COLOR_GREEN, 0, RGB_ON, 0);
203	if (COLORS >= COLOR_YELLOW)
204		(void)init_color_value(COLOR_YELLOW, RGB_ON, RGB_ON, 0);
205	if (COLORS >= COLOR_BLUE)
206		(void)init_color_value(COLOR_BLUE, 0, 0, RGB_ON);
207	if (COLORS >= COLOR_MAGENTA)
208		(void)init_color_value(COLOR_MAGENTA, RGB_ON, 0, RGB_ON);
209	if (COLORS >= COLOR_CYAN)
210		(void)init_color_value(COLOR_CYAN, 0, RGB_ON, RGB_ON);
211	if (COLORS >= COLOR_WHITE)
212		(void)init_color_value(COLOR_WHITE, RGB_ON, RGB_ON, RGB_ON);
213
214	/* Initialise other colours */
215	for (i = 8; i < COLORS; i++) {
216		_cursesi_screen->colours[i].red = 0;
217		_cursesi_screen->colours[i].green = 0;
218		_cursesi_screen->colours[i].blue = 0;
219		_cursesi_screen->colours[i].flags = 0;
220	}
221
222	/* Initialise pair 0 to default colours. */
223	_cursesi_screen->colour_pairs[0].fore = -1;
224	_cursesi_screen->colour_pairs[0].back = -1;
225	_cursesi_screen->colour_pairs[0].flags = 0;
226
227	/* Initialise user colour pairs to default (white on black) */
228	for (i = 0; i < COLOR_PAIRS; i++) {
229		_cursesi_screen->colour_pairs[i].fore = COLOR_WHITE;
230		_cursesi_screen->colour_pairs[i].back = COLOR_BLACK;
231		_cursesi_screen->colour_pairs[i].flags = 0;
232	}
233
234	/* Initialise default colour pair. */
235	_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].fore =
236	    __default_pair.fore;
237	_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].back =
238	    __default_pair.back;
239	_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].flags =
240	    __default_pair.flags;
241
242	__using_color = 1;
243	__do_color_init = 1;
244
245	/* Set all positions on all windows to curses default colours. */
246	for (wlp = _cursesi_screen->winlistp; wlp != NULL; wlp = wlp->nextp) {
247		win = wlp->winp;
248		if (wlp->winp != __virtscr && wlp->winp != curscr) {
249			/* Set color attribute on other windows */
250			win->battr |= __default_color;
251			for (y = 0; y < win->maxy; y++) {
252				win->alines[y]->flags |= __ISFORCED;
253				for (x = 0; x < win->maxx; x++) {
254					win->alines[y]->line[x].attr &= ~__COLOR;
255					win->alines[y]->line[x].attr |= __default_color;
256				}
257			}
258			__touchwin(win, 0);
259		}
260	}
261
262	return(OK);
263}
264
265/*
266 * init_pair --
267 *	Set pair foreground and background colors.
268 *	Our default colour ordering is ANSI - 1 = red, 4 = blue, 3 = yellow,
269 *	6 = cyan.  The older style (Sb/Sf) uses 1 = blue, 4 = red, 3 = cyan,
270 *	6 = yellow, so we swap them here and in pair_content().
271 */
272int
273init_pair(short pair, short fore, short back)
274{
275	int	changed;
276
277	__CTRACE(__CTRACE_COLOR, "init_pair: %d, %d, %d\n", pair, fore, back);
278
279	if (pair < 0 || pair >= COLOR_PAIRS)
280		return ERR;
281
282	if (pair == 0) /* Ignore request for pair 0, it is default. */
283		return OK;
284
285	if (fore >= COLORS)
286		return ERR;
287	if (back >= COLORS)
288		return ERR;
289
290	/* Swap red/blue and yellow/cyan */
291	if (_cursesi_screen->color_type == COLOR_OTHER) {
292		switch (fore) {
293		case COLOR_RED:
294			fore = COLOR_BLUE;
295			break;
296		case COLOR_BLUE:
297			fore = COLOR_RED;
298			break;
299		case COLOR_YELLOW:
300			fore = COLOR_CYAN;
301			break;
302		case COLOR_CYAN:
303			fore = COLOR_YELLOW;
304			break;
305		}
306		switch (back) {
307		case COLOR_RED:
308			back = COLOR_BLUE;
309			break;
310		case COLOR_BLUE:
311			back = COLOR_RED;
312			break;
313		case COLOR_YELLOW:
314			back = COLOR_CYAN;
315			break;
316		case COLOR_CYAN:
317			back = COLOR_YELLOW;
318			break;
319		}
320	}
321
322	if ((_cursesi_screen->colour_pairs[pair].flags & __USED) &&
323	    (fore != _cursesi_screen->colour_pairs[pair].fore ||
324	     back != _cursesi_screen->colour_pairs[pair].back))
325		changed = 1;
326	else
327		changed = 0;
328
329	_cursesi_screen->colour_pairs[pair].flags |= __USED;
330	_cursesi_screen->colour_pairs[pair].fore = fore;
331	_cursesi_screen->colour_pairs[pair].back = back;
332
333	/* XXX: need to initialise HP style (Ip) */
334
335	if (changed)
336		__change_pair(pair);
337	return OK;
338}
339
340/*
341 * pair_content --
342 *	Get pair foreground and background colours.
343 */
344int
345pair_content(short pair, short *forep, short *backp)
346{
347	if (pair < 0 || pair > _cursesi_screen->COLOR_PAIRS)
348		return ERR;
349
350	*forep = _cursesi_screen->colour_pairs[pair].fore;
351	*backp = _cursesi_screen->colour_pairs[pair].back;
352
353	/* Swap red/blue and yellow/cyan */
354	if (_cursesi_screen->color_type == COLOR_OTHER) {
355		switch (*forep) {
356		case COLOR_RED:
357			*forep = COLOR_BLUE;
358			break;
359		case COLOR_BLUE:
360			*forep = COLOR_RED;
361			break;
362		case COLOR_YELLOW:
363			*forep = COLOR_CYAN;
364			break;
365		case COLOR_CYAN:
366			*forep = COLOR_YELLOW;
367			break;
368		}
369		switch (*backp) {
370		case COLOR_RED:
371			*backp = COLOR_BLUE;
372			break;
373		case COLOR_BLUE:
374			*backp = COLOR_RED;
375			break;
376		case COLOR_YELLOW:
377			*backp = COLOR_CYAN;
378			break;
379		case COLOR_CYAN:
380			*backp = COLOR_YELLOW;
381			break;
382		}
383	}
384	return OK;
385}
386
387/*
388 * init_color_Value --
389 *	Set colour red, green and blue values.
390 */
391static int
392init_color_value(short color, short red, short green, short blue)
393{
394	if (color < 0 || color >= _cursesi_screen->COLORS)
395		return ERR;
396
397	_cursesi_screen->colours[color].red = red;
398	_cursesi_screen->colours[color].green = green;
399	_cursesi_screen->colours[color].blue = blue;
400	return OK;
401}
402
403/*
404 * init_color --
405 *	Set colour red, green and blue values.
406 *	Change color on screen.
407 */
408int
409init_color(short color, short red, short green, short blue)
410{
411	__CTRACE(__CTRACE_COLOR, "init_color: %d, %d, %d, %d\n",
412	    color, red, green, blue);
413	if (init_color_value(color, red, green, blue) == ERR)
414		return ERR;
415	if (!can_change || t_initialize_color(_cursesi_screen->term) == NULL)
416		return ERR;
417	tputs(tiparm(t_initialize_color(_cursesi_screen->term),
418	             color, red, green, blue), 0, __cputchar);
419	return OK;
420}
421
422/*
423 * color_content --
424 *	Get colour red, green and blue values.
425 */
426int
427color_content(short color, short *redp, short *greenp, short *bluep)
428{
429	if (color < 0 || color >= _cursesi_screen->COLORS)
430		return ERR;
431
432	*redp = _cursesi_screen->colours[color].red;
433	*greenp = _cursesi_screen->colours[color].green;
434	*bluep = _cursesi_screen->colours[color].blue;
435	return OK;
436}
437
438/*
439 * use_default_colors --
440 *	Use terminal default colours instead of curses default colour.
441  */
442int
443use_default_colors(void)
444{
445	__CTRACE(__CTRACE_COLOR, "use_default_colors\n");
446
447	return (assume_default_colors(-1, -1));
448}
449
450/*
451 * assume_default_colors --
452 *	Set the default foreground and background colours.
453 */
454int
455assume_default_colors(short fore, short back)
456{
457	__CTRACE(__CTRACE_COLOR, "assume_default_colors: %d, %d\n",
458	    fore, back);
459	__CTRACE(__CTRACE_COLOR,
460	    "assume_default_colors: default_colour = %d, pair_number = %d\n",
461	    __default_color, PAIR_NUMBER(__default_color));
462
463	/* Swap red/blue and yellow/cyan */
464	if (_cursesi_screen->color_type == COLOR_OTHER) {
465		switch (fore) {
466		case COLOR_RED:
467			fore = COLOR_BLUE;
468			break;
469		case COLOR_BLUE:
470			fore = COLOR_RED;
471			break;
472		case COLOR_YELLOW:
473			fore = COLOR_CYAN;
474			break;
475		case COLOR_CYAN:
476			fore = COLOR_YELLOW;
477			break;
478		}
479		switch (back) {
480		case COLOR_RED:
481			back = COLOR_BLUE;
482			break;
483		case COLOR_BLUE:
484			back = COLOR_RED;
485			break;
486		case COLOR_YELLOW:
487			back = COLOR_CYAN;
488			break;
489		case COLOR_CYAN:
490			back = COLOR_YELLOW;
491			break;
492		}
493	}
494	__default_pair.fore = fore;
495	__default_pair.back = back;
496	__default_pair.flags = __USED;
497
498	if (COLOR_PAIRS) {
499		_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].fore = fore;
500		_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].back = back;
501		_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].flags = __USED;
502	}
503
504	/*
505	 * If we've already called start_color(), make sure all instances
506	 * of the curses default colour pair are dirty.
507	 */
508	if (__using_color)
509		__change_pair(PAIR_NUMBER(__default_color));
510
511	return(OK);
512}
513
514/* no_color_video is a terminfo macro, but we need to retain binary compat */
515#ifdef __strong_alias
516#undef no_color_video
517__strong_alias(no_color_video, no_color_attributes)
518#endif
519/*
520 * no_color_attributes --
521 *	Return attributes that cannot be combined with color.
522 */
523attr_t
524no_color_attributes(void)
525{
526	return(_cursesi_screen->nca);
527}
528
529/*
530 * __set_color --
531 *	Set terminal foreground and background colours.
532 */
533void
534__set_color( /*ARGSUSED*/ WINDOW *win, attr_t attr)
535{
536	short	pair;
537
538	if ((__do_color_init != 1) &&
539	    ((curscr->wattr & __COLOR) == (attr & __COLOR)))
540		return;
541
542	pair = PAIR_NUMBER((uint32_t)attr);
543	__CTRACE(__CTRACE_COLOR, "__set_color: %d, %d, %d\n", pair,
544	    _cursesi_screen->colour_pairs[pair].fore,
545	    _cursesi_screen->colour_pairs[pair].back);
546	switch (_cursesi_screen->color_type) {
547	/* Set ANSI foreground and background colours */
548	case COLOR_ANSI:
549		if (_cursesi_screen->colour_pairs[pair].fore < 0 ||
550		    _cursesi_screen->colour_pairs[pair].back < 0)
551			__unset_color(curscr);
552		if (_cursesi_screen->colour_pairs[pair].fore >= 0)
553			tputs(tiparm(t_set_a_foreground(_cursesi_screen->term),
554			    (int)_cursesi_screen->colour_pairs[pair].fore),
555			    0, __cputchar);
556		if (_cursesi_screen->colour_pairs[pair].back >= 0)
557			tputs(tiparm(t_set_a_background(_cursesi_screen->term),
558			    (int)_cursesi_screen->colour_pairs[pair].back),
559			    0, __cputchar);
560		break;
561	case COLOR_HP:
562		/* XXX: need to support HP style */
563		break;
564	case COLOR_TEK:
565		/* XXX: need to support Tek style */
566		break;
567	case COLOR_OTHER:
568		if (_cursesi_screen->colour_pairs[pair].fore < 0 ||
569		    _cursesi_screen->colour_pairs[pair].back < 0)
570			__unset_color(curscr);
571		if (_cursesi_screen->colour_pairs[pair].fore >= 0)
572			tputs(tiparm(t_set_foreground(_cursesi_screen->term),
573			    (int)_cursesi_screen->colour_pairs[pair].fore),
574			    0, __cputchar);
575		if (_cursesi_screen->colour_pairs[pair].back >= 0)
576			tputs(tiparm(t_set_background(_cursesi_screen->term),
577			    (int)_cursesi_screen->colour_pairs[pair].back),
578			    0, __cputchar);
579		break;
580	}
581	curscr->wattr &= ~__COLOR;
582	curscr->wattr |= attr & __COLOR;
583}
584
585/*
586 * __unset_color --
587 *	Clear terminal foreground and background colours.
588 */
589void
590__unset_color(WINDOW *win)
591{
592	__CTRACE(__CTRACE_COLOR, "__unset_color\n");
593	switch (_cursesi_screen->color_type) {
594	/* Clear ANSI foreground and background colours */
595	case COLOR_ANSI:
596		if (orig_pair != NULL) {
597			tputs(orig_pair, 0, __cputchar);
598			win->wattr &= __mask_op;
599		}
600		break;
601	case COLOR_HP:
602		/* XXX: need to support HP style */
603		break;
604	case COLOR_TEK:
605		/* XXX: need to support Tek style */
606		break;
607	case COLOR_OTHER:
608		if (orig_pair != NULL) {
609			tputs(orig_pair, 0, __cputchar);
610			win->wattr &= __mask_op;
611		}
612		break;
613	}
614}
615
616/*
617 * __restore_colors --
618 *	Redo color definitions after restarting 'curses' mode.
619 */
620void
621__restore_colors(void)
622{
623	if (can_change != 0)
624		switch (_cursesi_screen->color_type) {
625		case COLOR_HP:
626			/* XXX: need to re-initialise HP style (Ip) */
627			break;
628		case COLOR_TEK:
629			/* XXX: need to re-initialise Tek style (Ic) */
630			break;
631		}
632}
633
634/*
635 * __change_pair --
636 *	Mark dirty all positions using pair.
637 */
638void
639__change_pair(short pair)
640{
641	struct __winlist	*wlp;
642	WINDOW			*win;
643	int			 y, x;
644	__LINE			*lp;
645	uint32_t		cl = COLOR_PAIR(pair);
646
647
648	for (wlp = _cursesi_screen->winlistp; wlp != NULL; wlp = wlp->nextp) {
649		__CTRACE(__CTRACE_COLOR, "__change_pair: win = %p\n",
650		    wlp->winp);
651		win = wlp->winp;
652		if (win == __virtscr)
653			continue;
654		else if (win == curscr) {
655			/* Reset colour attribute on curscr */
656			__CTRACE(__CTRACE_COLOR,
657			    "__change_pair: win == curscr\n");
658			for (y = 0; y < curscr->maxy; y++) {
659				lp = curscr->alines[y];
660				for (x = 0; x < curscr->maxx; x++) {
661					if ((lp->line[x].attr & __COLOR) == cl)
662						lp->line[x].attr &= ~__COLOR;
663				}
664			}
665		} else {
666			/* Mark dirty those positions with colour pair "pair" */
667			for (y = 0; y < win->maxy; y++) {
668				lp = win->alines[y];
669				for (x = 0; x < win->maxx; x++)
670					if ((lp->line[x].attr &
671					    __COLOR) == cl) {
672						if (!(lp->flags & __ISDIRTY))
673							lp->flags |= __ISDIRTY;
674						/*
675						 * firstchp/lastchp are shared
676						 * between parent window and
677						 * sub-window.
678						 */
679						if (*lp->firstchp > x)
680							*lp->firstchp = x;
681
682						if (*lp->lastchp < x)
683							*lp->lastchp = x;
684					}
685#ifdef DEBUG
686				if ((win->alines[y]->flags & __ISDIRTY))
687					__CTRACE(__CTRACE_COLOR,
688					    "__change_pair: first = %d, "
689					    "last = %d\n",
690					    *win->alines[y]->firstchp,
691					    *win->alines[y]->lastchp);
692#endif
693			}
694		}
695	}
696}
697