1/*-
2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3 * All rights reserved.
4 *
5 * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer as
13 *    the first lines of this file unmodified.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD$");
32
33#include "opt_syscons.h"
34#include "opt_teken.h"
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/kernel.h>
39#include <sys/module.h>
40#include <sys/consio.h>
41#include <sys/kbio.h>
42
43#if defined(__arm__) || defined(__mips__) || \
44	defined(__powerpc__) || defined(__sparc64__)
45#include <machine/sc_machdep.h>
46#else
47#include <machine/pc/display.h>
48#endif
49
50#include <dev/syscons/syscons.h>
51
52#include <teken/teken.h>
53
54static void scteken_revattr(unsigned char, teken_attr_t *);
55static unsigned int scteken_attr(const teken_attr_t *);
56
57static sc_term_init_t		scteken_init;
58static sc_term_term_t		scteken_term;
59static sc_term_puts_t		scteken_puts;
60static sc_term_ioctl_t		scteken_ioctl;
61static sc_term_default_attr_t	scteken_default_attr;
62static sc_term_clear_t		scteken_clear;
63static sc_term_input_t		scteken_input;
64static sc_term_fkeystr_t	scteken_fkeystr;
65static void			scteken_nop(void);
66
67typedef struct {
68	teken_t		ts_teken;
69	int		ts_busy;
70} teken_stat;
71
72static teken_stat	reserved_teken_stat;
73
74static sc_term_sw_t sc_term_scteken = {
75	{ NULL, NULL },
76	"scteken",			/* emulator name */
77	"teken terminal",		/* description */
78	"*",				/* matching renderer */
79	sizeof(teken_stat),		/* softc size */
80	0,
81	scteken_init,
82	scteken_term,
83	scteken_puts,
84	scteken_ioctl,
85	(sc_term_reset_t *)scteken_nop,
86	scteken_default_attr,
87	scteken_clear,
88	(sc_term_notify_t *)scteken_nop,
89	scteken_input,
90	scteken_fkeystr,
91};
92
93SCTERM_MODULE(scteken, sc_term_scteken);
94
95static tf_bell_t	scteken_bell;
96static tf_cursor_t	scteken_cursor;
97static tf_putchar_t	scteken_putchar;
98static tf_fill_t	scteken_fill;
99static tf_copy_t	scteken_copy;
100static tf_param_t	scteken_param;
101static tf_respond_t	scteken_respond;
102
103static const teken_funcs_t scteken_funcs = {
104	.tf_bell	= scteken_bell,
105	.tf_cursor	= scteken_cursor,
106	.tf_putchar	= scteken_putchar,
107	.tf_fill	= scteken_fill,
108	.tf_copy	= scteken_copy,
109	.tf_param	= scteken_param,
110	.tf_respond	= scteken_respond,
111};
112
113static int
114scteken_init(scr_stat *scp, void **softc, int code)
115{
116	teken_stat *ts;
117	teken_pos_t tp;
118
119	if (*softc == NULL) {
120		if (reserved_teken_stat.ts_busy)
121			return (EINVAL);
122		*softc = &reserved_teken_stat;
123	}
124	ts = *softc;
125
126	switch (code) {
127	case SC_TE_COLD_INIT:
128		++sc_term_scteken.te_refcount;
129		ts->ts_busy = 1;
130		/* FALLTHROUGH */
131	case SC_TE_WARM_INIT:
132		teken_init(&ts->ts_teken, &scteken_funcs, scp);
133#ifndef TEKEN_UTF8
134		teken_set_8bit(&ts->ts_teken);
135#endif /* !TEKEN_UTF8 */
136#ifdef TEKEN_CONS25
137		teken_set_cons25(&ts->ts_teken);
138#endif /* TEKEN_CONS25 */
139
140		tp.tp_row = scp->ysize;
141		tp.tp_col = scp->xsize;
142		teken_set_winsize(&ts->ts_teken, &tp);
143
144		if (scp->cursor_pos < scp->ysize * scp->xsize) {
145			/* Valid old cursor position. */
146			tp.tp_row = scp->cursor_pos / scp->xsize;
147			tp.tp_col = scp->cursor_pos % scp->xsize;
148			teken_set_cursor(&ts->ts_teken, &tp);
149		}
150		break;
151	}
152
153	return (0);
154}
155
156static int
157scteken_term(scr_stat *scp, void **softc)
158{
159
160	if (*softc == &reserved_teken_stat) {
161		*softc = NULL;
162		reserved_teken_stat.ts_busy = 0;
163	}
164	--sc_term_scteken.te_refcount;
165
166	return (0);
167}
168
169static void
170scteken_puts(scr_stat *scp, u_char *buf, int len, int kernel)
171{
172	teken_stat *ts = scp->ts;
173	teken_attr_t backup, kattr;
174
175	scp->sc->write_in_progress++;
176	if (kernel) {
177		/* Use special colors for kernel messages. */
178		backup = *teken_get_curattr(&ts->ts_teken);
179		scteken_revattr(SC_KERNEL_CONS_ATTR, &kattr);
180		teken_set_curattr(&ts->ts_teken, &kattr);
181		teken_input(&ts->ts_teken, buf, len);
182		teken_set_curattr(&ts->ts_teken, &backup);
183	} else {
184		/* Print user messages with regular colors. */
185		teken_input(&ts->ts_teken, buf, len);
186	}
187	scp->sc->write_in_progress--;
188}
189
190static int
191scteken_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
192	     struct thread *td)
193{
194	teken_stat *ts = scp->ts;
195	vid_info_t *vi;
196	unsigned int attr;
197
198	switch (cmd) {
199	case GIO_ATTR:      	/* get current attributes */
200		*(int*)data =
201		    scteken_attr(teken_get_curattr(&ts->ts_teken));
202		return (0);
203	case CONS_GETINFO:  	/* get current (virtual) console info */
204		vi = (vid_info_t *)data;
205		if (vi->size != sizeof(struct vid_info))
206			return EINVAL;
207
208		attr = scteken_attr(teken_get_defattr(&ts->ts_teken));
209		vi->mv_norm.fore = attr & 0x0f;
210		vi->mv_norm.back = (attr >> 4) & 0x0f;
211		vi->mv_rev.fore = vi->mv_norm.back;
212		vi->mv_rev.back = vi->mv_norm.fore;
213		/*
214		 * The other fields are filled by the upper routine. XXX
215		 */
216		return (ENOIOCTL);
217	}
218
219	return (ENOIOCTL);
220}
221
222static void
223scteken_default_attr(scr_stat *scp, int color, int rev_color)
224{
225	teken_stat *ts = scp->ts;
226	teken_attr_t ta;
227
228	scteken_revattr(color, &ta);
229	teken_set_defattr(&ts->ts_teken, &ta);
230}
231
232static void
233scteken_clear(scr_stat *scp)
234{
235
236	sc_move_cursor(scp, 0, 0);
237	sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20], SC_NORM_ATTR << 8);
238	mark_all(scp);
239}
240
241static int
242scteken_input(scr_stat *scp, int c, struct tty *tp)
243{
244
245	return FALSE;
246}
247
248static const char *
249scteken_fkeystr(scr_stat *scp, int c)
250{
251	teken_stat *ts = scp->ts;
252	unsigned int k;
253
254	switch (c) {
255	case FKEY | F(1):  case FKEY | F(2):  case FKEY | F(3):
256	case FKEY | F(4):  case FKEY | F(5):  case FKEY | F(6):
257	case FKEY | F(7):  case FKEY | F(8):  case FKEY | F(9):
258	case FKEY | F(10): case FKEY | F(11): case FKEY | F(12):
259		k = TKEY_F1 + c - (FKEY | F(1));
260		break;
261	case FKEY | F(49):
262		k = TKEY_HOME;
263		break;
264	case FKEY | F(50):
265		k = TKEY_UP;
266		break;
267	case FKEY | F(51):
268		k = TKEY_PAGE_UP;
269		break;
270	case FKEY | F(53):
271		k = TKEY_LEFT;
272		break;
273	case FKEY | F(55):
274		k = TKEY_RIGHT;
275		break;
276	case FKEY | F(57):
277		k = TKEY_END;
278		break;
279	case FKEY | F(58):
280		k = TKEY_DOWN;
281		break;
282	case FKEY | F(59):
283		k = TKEY_PAGE_DOWN;
284		break;
285	case FKEY | F(60):
286		k = TKEY_INSERT;
287		break;
288	case FKEY | F(61):
289		k = TKEY_DELETE;
290		break;
291	default:
292		return (NULL);
293	}
294
295	return (teken_get_sequence(&ts->ts_teken, k));
296}
297
298static void
299scteken_nop(void)
300{
301
302}
303
304/*
305 * libteken routines.
306 */
307
308static const unsigned char fgcolors_normal[TC_NCOLORS] = {
309	FG_BLACK,     FG_RED,          FG_GREEN,      FG_BROWN,
310	FG_BLUE,      FG_MAGENTA,      FG_CYAN,       FG_LIGHTGREY,
311};
312
313static const unsigned char fgcolors_bold[TC_NCOLORS] = {
314	FG_DARKGREY,  FG_LIGHTRED,     FG_LIGHTGREEN, FG_YELLOW,
315	FG_LIGHTBLUE, FG_LIGHTMAGENTA, FG_LIGHTCYAN,  FG_WHITE,
316};
317
318static const unsigned char bgcolors[TC_NCOLORS] = {
319	BG_BLACK,     BG_RED,          BG_GREEN,      BG_BROWN,
320	BG_BLUE,      BG_MAGENTA,      BG_CYAN,       BG_LIGHTGREY,
321};
322
323static void
324scteken_revattr(unsigned char color, teken_attr_t *a)
325{
326	teken_color_t fg, bg;
327
328	/*
329	 * XXX: Reverse conversion of syscons to teken attributes. Not
330	 * realiable. Maybe we should turn it into a 1:1 mapping one of
331	 * these days?
332	 */
333
334	a->ta_format = 0;
335	a->ta_fgcolor = TC_WHITE;
336	a->ta_bgcolor = TC_BLACK;
337
338#ifdef FG_BLINK
339	if (color & FG_BLINK) {
340		a->ta_format |= TF_BLINK;
341		color &= ~FG_BLINK;
342	}
343#endif /* FG_BLINK */
344
345	for (fg = 0; fg < TC_NCOLORS; fg++) {
346		for (bg = 0; bg < TC_NCOLORS; bg++) {
347			if ((fgcolors_normal[fg] | bgcolors[bg]) == color) {
348				a->ta_fgcolor = fg;
349				a->ta_bgcolor = bg;
350				return;
351			}
352
353			if ((fgcolors_bold[fg] | bgcolors[bg]) == color) {
354				a->ta_fgcolor = fg;
355				a->ta_bgcolor = bg;
356				a->ta_format |= TF_BOLD;
357				return;
358			}
359		}
360	}
361}
362
363static unsigned int
364scteken_attr(const teken_attr_t *a)
365{
366	unsigned int attr = 0;
367	teken_color_t fg, bg;
368
369	if (a->ta_format & TF_REVERSE) {
370		fg = teken_256to8(a->ta_bgcolor);
371		bg = teken_256to8(a->ta_fgcolor);
372	} else {
373		fg = teken_256to8(a->ta_fgcolor);
374		bg = teken_256to8(a->ta_bgcolor);
375	}
376	if (a->ta_format & TF_BOLD)
377		attr |= fgcolors_bold[fg];
378	else
379		attr |= fgcolors_normal[fg];
380	attr |= bgcolors[bg];
381
382#ifdef FG_UNDERLINE
383	if (a->ta_format & TF_UNDERLINE)
384		attr |= FG_UNDERLINE;
385#endif /* FG_UNDERLINE */
386#ifdef FG_BLINK
387	if (a->ta_format & TF_BLINK)
388		attr |= FG_BLINK;
389#endif /* FG_BLINK */
390
391	return (attr);
392}
393
394static void
395scteken_bell(void *arg)
396{
397	scr_stat *scp = arg;
398
399	sc_bell(scp, scp->bell_pitch, scp->bell_duration);
400}
401
402static void
403scteken_cursor(void *arg, const teken_pos_t *p)
404{
405	scr_stat *scp = arg;
406
407	sc_move_cursor(scp, p->tp_col, p->tp_row);
408}
409
410#ifdef TEKEN_UTF8
411struct unicp437 {
412	uint16_t	unicode_base;
413	uint8_t		cp437_base;
414	uint8_t		length;
415};
416
417static const struct unicp437 cp437table[] = {
418	{ 0x0020, 0x20, 0x5e }, { 0x00a0, 0x20, 0x00 },
419	{ 0x00a1, 0xad, 0x00 }, { 0x00a2, 0x9b, 0x00 },
420	{ 0x00a3, 0x9c, 0x00 }, { 0x00a5, 0x9d, 0x00 },
421	{ 0x00a7, 0x15, 0x00 }, { 0x00aa, 0xa6, 0x00 },
422	{ 0x00ab, 0xae, 0x00 }, { 0x00ac, 0xaa, 0x00 },
423	{ 0x00b0, 0xf8, 0x00 }, { 0x00b1, 0xf1, 0x00 },
424	{ 0x00b2, 0xfd, 0x00 }, { 0x00b5, 0xe6, 0x00 },
425	{ 0x00b6, 0x14, 0x00 }, { 0x00b7, 0xfa, 0x00 },
426	{ 0x00ba, 0xa7, 0x00 }, { 0x00bb, 0xaf, 0x00 },
427	{ 0x00bc, 0xac, 0x00 }, { 0x00bd, 0xab, 0x00 },
428	{ 0x00bf, 0xa8, 0x00 }, { 0x00c0, 0x41, 0x00 },
429	{ 0x00c1, 0x41, 0x00 }, { 0x00c2, 0x41, 0x00 },
430	{ 0x00c4, 0x8e, 0x01 }, { 0x00c6, 0x92, 0x00 },
431	{ 0x00c7, 0x80, 0x00 }, { 0x00c8, 0x45, 0x00 },
432	{ 0x00c9, 0x90, 0x00 }, { 0x00ca, 0x45, 0x00 },
433	{ 0x00cb, 0x45, 0x00 }, { 0x00cc, 0x49, 0x00 },
434	{ 0x00cd, 0x49, 0x00 }, { 0x00ce, 0x49, 0x00 },
435	{ 0x00cf, 0x49, 0x00 }, { 0x00d1, 0xa5, 0x00 },
436	{ 0x00d2, 0x4f, 0x00 }, { 0x00d3, 0x4f, 0x00 },
437	{ 0x00d4, 0x4f, 0x00 }, { 0x00d6, 0x99, 0x00 },
438	{ 0x00d9, 0x55, 0x00 }, { 0x00da, 0x55, 0x00 },
439	{ 0x00db, 0x55, 0x00 }, { 0x00dc, 0x9a, 0x00 },
440	{ 0x00df, 0xe1, 0x00 }, { 0x00e0, 0x85, 0x00 },
441	{ 0x00e1, 0xa0, 0x00 }, { 0x00e2, 0x83, 0x00 },
442	{ 0x00e4, 0x84, 0x00 }, { 0x00e5, 0x86, 0x00 },
443	{ 0x00e6, 0x91, 0x00 }, { 0x00e7, 0x87, 0x00 },
444	{ 0x00e8, 0x8a, 0x00 }, { 0x00e9, 0x82, 0x00 },
445	{ 0x00ea, 0x88, 0x01 }, { 0x00ec, 0x8d, 0x00 },
446	{ 0x00ed, 0xa1, 0x00 }, { 0x00ee, 0x8c, 0x00 },
447	{ 0x00ef, 0x8b, 0x00 }, { 0x00f0, 0xeb, 0x00 },
448	{ 0x00f1, 0xa4, 0x00 }, { 0x00f2, 0x95, 0x00 },
449	{ 0x00f3, 0xa2, 0x00 }, { 0x00f4, 0x93, 0x00 },
450	{ 0x00f6, 0x94, 0x00 }, { 0x00f7, 0xf6, 0x00 },
451	{ 0x00f8, 0xed, 0x00 }, { 0x00f9, 0x97, 0x00 },
452	{ 0x00fa, 0xa3, 0x00 }, { 0x00fb, 0x96, 0x00 },
453	{ 0x00fc, 0x81, 0x00 }, { 0x00ff, 0x98, 0x00 },
454	{ 0x013f, 0x4c, 0x00 }, { 0x0140, 0x6c, 0x00 },
455	{ 0x0192, 0x9f, 0x00 }, { 0x0393, 0xe2, 0x00 },
456	{ 0x0398, 0xe9, 0x00 }, { 0x03a3, 0xe4, 0x00 },
457	{ 0x03a6, 0xe8, 0x00 }, { 0x03a9, 0xea, 0x00 },
458	{ 0x03b1, 0xe0, 0x01 }, { 0x03b4, 0xeb, 0x00 },
459	{ 0x03b5, 0xee, 0x00 }, { 0x03bc, 0xe6, 0x00 },
460	{ 0x03c0, 0xe3, 0x00 }, { 0x03c3, 0xe5, 0x00 },
461	{ 0x03c4, 0xe7, 0x00 }, { 0x03c6, 0xed, 0x00 },
462	{ 0x03d5, 0xed, 0x00 }, { 0x2010, 0x2d, 0x00 },
463	{ 0x2014, 0x2d, 0x00 }, { 0x2018, 0x60, 0x00 },
464	{ 0x2019, 0x27, 0x00 }, { 0x201c, 0x22, 0x00 },
465	{ 0x201d, 0x22, 0x00 }, { 0x2022, 0x07, 0x00 },
466	{ 0x203c, 0x13, 0x00 }, { 0x207f, 0xfc, 0x00 },
467	{ 0x20a7, 0x9e, 0x00 }, { 0x20ac, 0xee, 0x00 },
468	{ 0x2126, 0xea, 0x00 }, { 0x2190, 0x1b, 0x00 },
469	{ 0x2191, 0x18, 0x00 }, { 0x2192, 0x1a, 0x00 },
470	{ 0x2193, 0x19, 0x00 }, { 0x2194, 0x1d, 0x00 },
471	{ 0x2195, 0x12, 0x00 }, { 0x21a8, 0x17, 0x00 },
472	{ 0x2202, 0xeb, 0x00 }, { 0x2208, 0xee, 0x00 },
473	{ 0x2211, 0xe4, 0x00 }, { 0x2212, 0x2d, 0x00 },
474	{ 0x2219, 0xf9, 0x00 }, { 0x221a, 0xfb, 0x00 },
475	{ 0x221e, 0xec, 0x00 }, { 0x221f, 0x1c, 0x00 },
476	{ 0x2229, 0xef, 0x00 }, { 0x2248, 0xf7, 0x00 },
477	{ 0x2261, 0xf0, 0x00 }, { 0x2264, 0xf3, 0x00 },
478	{ 0x2265, 0xf2, 0x00 }, { 0x2302, 0x7f, 0x00 },
479	{ 0x2310, 0xa9, 0x00 }, { 0x2320, 0xf4, 0x00 },
480	{ 0x2321, 0xf5, 0x00 }, { 0x2500, 0xc4, 0x00 },
481	{ 0x2502, 0xb3, 0x00 }, { 0x250c, 0xda, 0x00 },
482	{ 0x2510, 0xbf, 0x00 }, { 0x2514, 0xc0, 0x00 },
483	{ 0x2518, 0xd9, 0x00 }, { 0x251c, 0xc3, 0x00 },
484	{ 0x2524, 0xb4, 0x00 }, { 0x252c, 0xc2, 0x00 },
485	{ 0x2534, 0xc1, 0x00 }, { 0x253c, 0xc5, 0x00 },
486	{ 0x2550, 0xcd, 0x00 }, { 0x2551, 0xba, 0x00 },
487	{ 0x2552, 0xd5, 0x00 }, { 0x2553, 0xd6, 0x00 },
488	{ 0x2554, 0xc9, 0x00 }, { 0x2555, 0xb8, 0x00 },
489	{ 0x2556, 0xb7, 0x00 }, { 0x2557, 0xbb, 0x00 },
490	{ 0x2558, 0xd4, 0x00 }, { 0x2559, 0xd3, 0x00 },
491	{ 0x255a, 0xc8, 0x00 }, { 0x255b, 0xbe, 0x00 },
492	{ 0x255c, 0xbd, 0x00 }, { 0x255d, 0xbc, 0x00 },
493	{ 0x255e, 0xc6, 0x01 }, { 0x2560, 0xcc, 0x00 },
494	{ 0x2561, 0xb5, 0x00 }, { 0x2562, 0xb6, 0x00 },
495	{ 0x2563, 0xb9, 0x00 }, { 0x2564, 0xd1, 0x01 },
496	{ 0x2566, 0xcb, 0x00 }, { 0x2567, 0xcf, 0x00 },
497	{ 0x2568, 0xd0, 0x00 }, { 0x2569, 0xca, 0x00 },
498	{ 0x256a, 0xd8, 0x00 }, { 0x256b, 0xd7, 0x00 },
499	{ 0x256c, 0xce, 0x00 }, { 0x2580, 0xdf, 0x00 },
500	{ 0x2584, 0xdc, 0x00 }, { 0x2588, 0xdb, 0x00 },
501	{ 0x258c, 0xdd, 0x00 }, { 0x2590, 0xde, 0x00 },
502	{ 0x2591, 0xb0, 0x02 }, { 0x25a0, 0xfe, 0x00 },
503	{ 0x25ac, 0x16, 0x00 },
504	{ 0x25ae, 0xdb, 0x00 }, { 0x25b2, 0x1e, 0x00 },
505	{ 0x25ba, 0x10, 0x00 }, { 0x25bc, 0x1f, 0x00 },
506	{ 0x25c4, 0x11, 0x00 }, { 0x25cb, 0x09, 0x00 },
507	{ 0x25d8, 0x08, 0x00 }, { 0x25d9, 0x0a, 0x00 },
508	{ 0x263a, 0x01, 0x01 }, { 0x263c, 0x0f, 0x00 },
509	{ 0x2640, 0x0c, 0x00 }, { 0x2642, 0x0b, 0x00 },
510	{ 0x2660, 0x06, 0x00 }, { 0x2663, 0x05, 0x00 },
511	{ 0x2665, 0x03, 0x01 }, { 0x266a, 0x0d, 0x01 },
512};
513
514static void
515scteken_get_cp437(teken_char_t *c, int *attr)
516{
517	int min, mid, max;
518
519	min = 0;
520	max = (sizeof(cp437table) / sizeof(struct unicp437)) - 1;
521
522	if (*c < cp437table[0].unicode_base ||
523	    *c > cp437table[max].unicode_base + cp437table[max].length)
524		goto bad;
525
526	while (max >= min) {
527		mid = (min + max) / 2;
528		if (*c < cp437table[mid].unicode_base) {
529			max = mid - 1;
530		} else if (*c > cp437table[mid].unicode_base +
531		    cp437table[mid].length) {
532			min = mid + 1;
533		} else {
534			*c -= cp437table[mid].unicode_base;
535			*c += cp437table[mid].cp437_base;
536			return;
537		}
538	}
539bad:
540	/* Character not present in CP437. */
541	*attr = (FG_RED|BG_BLACK) << 8;
542	*c = '?';
543}
544#endif /* TEKEN_UTF8 */
545
546static void
547scteken_putchar(void *arg, const teken_pos_t *tp, teken_char_t c,
548    const teken_attr_t *a)
549{
550	scr_stat *scp = arg;
551	u_char *map;
552	u_char ch;
553	vm_offset_t p;
554	int cursor, attr;
555
556	/*
557	 * No support for printing right hand sides for CJK fullwidth
558	 * characters. Simply print a space and assume that the left
559	 * hand side describes the entire character.
560	 */
561	attr = scteken_attr(a) << 8;
562	if (a->ta_format & TF_CJK_RIGHT)
563		c = ' ';
564#ifdef TEKEN_UTF8
565	scteken_get_cp437(&c, &attr);
566#endif /* TEKEN_UTF8 */
567	ch = c;
568
569	map = scp->sc->scr_map;
570
571	cursor = tp->tp_row * scp->xsize + tp->tp_col;
572	p = sc_vtb_pointer(&scp->vtb, cursor);
573	sc_vtb_putchar(&scp->vtb, p, map[ch], attr);
574
575	mark_for_update(scp, cursor);
576	/*
577	 * XXX: Why do we need this? Only marking `cursor' should be
578	 * enough. Without this line, we get artifacts.
579	 */
580	mark_for_update(scp, imin(cursor + 1, scp->xsize * scp->ysize - 1));
581}
582
583static void
584scteken_fill(void *arg, const teken_rect_t *r, teken_char_t c,
585    const teken_attr_t *a)
586{
587	scr_stat *scp = arg;
588	u_char *map;
589	u_char ch;
590	unsigned int width;
591	int attr, row;
592
593	attr = scteken_attr(a) << 8;
594#ifdef TEKEN_UTF8
595	scteken_get_cp437(&c, &attr);
596#endif /* TEKEN_UTF8 */
597	ch = c;
598
599	map = scp->sc->scr_map;
600
601	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
602		/* Single contiguous region to fill. */
603		sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
604		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize,
605		    map[ch], attr);
606	} else {
607		/* Fill display line by line. */
608		width = r->tr_end.tp_col - r->tr_begin.tp_col;
609
610		for (row = r->tr_begin.tp_row; row < r->tr_end.tp_row; row++) {
611			sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row *
612			    scp->xsize + r->tr_begin.tp_col,
613			    width, map[ch], attr);
614		}
615	}
616
617	/* Mark begin and end positions to be refreshed. */
618	mark_for_update(scp,
619	    r->tr_begin.tp_row * scp->xsize + r->tr_begin.tp_col);
620	mark_for_update(scp,
621	    (r->tr_end.tp_row - 1) * scp->xsize + (r->tr_end.tp_col - 1));
622	sc_remove_cutmarking(scp);
623}
624
625static void
626scteken_copy(void *arg, const teken_rect_t *r, const teken_pos_t *p)
627{
628	scr_stat *scp = arg;
629	unsigned int width;
630	int src, dst, end;
631
632#ifndef SC_NO_HISTORY
633	/*
634	 * We count a line of input as history if we perform a copy of
635	 * one whole line upward. In other words: if a line of text gets
636	 * overwritten by a rectangle that's right below it.
637	 */
638	if (scp->history != NULL &&
639	    r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize &&
640	    r->tr_begin.tp_row == p->tp_row + 1) {
641		sc_hist_save_one_line(scp, p->tp_row);
642	}
643#endif
644
645	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
646		/* Single contiguous region to copy. */
647		sc_vtb_move(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
648		    p->tp_row * scp->xsize,
649		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize);
650	} else {
651		/* Copy line by line. */
652		width = r->tr_end.tp_col - r->tr_begin.tp_col;
653
654		if (p->tp_row < r->tr_begin.tp_row) {
655			/* Copy from top to bottom. */
656			src = r->tr_begin.tp_row * scp->xsize +
657			    r->tr_begin.tp_col;
658			end = r->tr_end.tp_row * scp->xsize +
659			    r->tr_end.tp_col;
660			dst = p->tp_row * scp->xsize + p->tp_col;
661
662			while (src < end) {
663				sc_vtb_move(&scp->vtb, src, dst, width);
664
665				src += scp->xsize;
666				dst += scp->xsize;
667			}
668		} else {
669			/* Copy from bottom to top. */
670			src = (r->tr_end.tp_row - 1) * scp->xsize +
671			    r->tr_begin.tp_col;
672			end = r->tr_begin.tp_row * scp->xsize +
673			    r->tr_begin.tp_col;
674			dst = (p->tp_row + r->tr_end.tp_row -
675			    r->tr_begin.tp_row - 1) * scp->xsize + p->tp_col;
676
677			while (src >= end) {
678				sc_vtb_move(&scp->vtb, src, dst, width);
679
680				src -= scp->xsize;
681				dst -= scp->xsize;
682			}
683		}
684	}
685
686	/* Mark begin and end positions to be refreshed. */
687	mark_for_update(scp,
688	    p->tp_row * scp->xsize + p->tp_col);
689	mark_for_update(scp,
690	    (p->tp_row + r->tr_end.tp_row - r->tr_begin.tp_row - 1) *
691	    scp->xsize +
692	    (p->tp_col + r->tr_end.tp_col - r->tr_begin.tp_col - 1));
693	sc_remove_cutmarking(scp);
694}
695
696static void
697scteken_param(void *arg, int cmd, unsigned int value)
698{
699	scr_stat *scp = arg;
700
701	switch (cmd) {
702	case TP_SHOWCURSOR:
703		if (value) {
704			sc_change_cursor_shape(scp,
705			    CONS_RESET_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
706		} else {
707			sc_change_cursor_shape(scp,
708			    CONS_HIDDEN_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
709		}
710		break;
711	case TP_SWITCHVT:
712		sc_switch_scr(scp->sc, value);
713		break;
714	case TP_SETBELLPD:
715		scp->bell_pitch = TP_SETBELLPD_PITCH(value);
716		scp->bell_duration = TP_SETBELLPD_DURATION(value);
717		break;
718	case TP_MOUSE:
719		scp->mouse_level = value;
720		break;
721	}
722}
723
724static void
725scteken_respond(void *arg, const void *buf, size_t len)
726{
727	scr_stat *scp = arg;
728
729	sc_respond(scp, buf, len, 0);
730}
731