xref: /freebsd/sys/dev/syscons/scterm-teken.c (revision a3557ef0)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
5  * All rights reserved.
6  *
7  * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
8  * All rights reserved.
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 as
15  *    the first lines of this file unmodified.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 
35 #include "opt_syscons.h"
36 #include "opt_teken.h"
37 
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/kernel.h>
41 #include <sys/module.h>
42 #include <sys/consio.h>
43 #include <sys/kbio.h>
44 
45 #if defined(__arm__) || defined(__mips__) || defined(__powerpc__)
46 #include <machine/sc_machdep.h>
47 #else
48 #include <machine/pc/display.h>
49 #endif
50 
51 #include <dev/syscons/syscons.h>
52 
53 #include <teken/teken.h>
54 
55 static void scteken_sc_to_te_attr(unsigned char, teken_attr_t *);
56 static int scteken_te_to_sc_attr(const teken_attr_t *);
57 
58 static sc_term_init_t		scteken_init;
59 static sc_term_term_t		scteken_term;
60 static sc_term_puts_t		scteken_puts;
61 static sc_term_ioctl_t		scteken_ioctl;
62 static sc_term_default_attr_t	scteken_default_attr;
63 static sc_term_clear_t		scteken_clear;
64 static sc_term_input_t		scteken_input;
65 static sc_term_fkeystr_t	scteken_fkeystr;
66 static sc_term_sync_t		scteken_sync;
67 static void			scteken_nop(void);
68 
69 typedef struct {
70 	teken_t		ts_teken;
71 	int		ts_busy;
72 } teken_stat;
73 
74 static teken_stat	reserved_teken_stat;
75 
76 static void scteken_sync_internal(scr_stat *, teken_stat *);
77 
78 static sc_term_sw_t sc_term_scteken = {
79 	{ NULL, NULL },
80 	"scteken",			/* emulator name */
81 	"teken terminal",		/* description */
82 	"*",				/* matching renderer */
83 	sizeof(teken_stat),		/* softc size */
84 	0,
85 	scteken_init,
86 	scteken_term,
87 	scteken_puts,
88 	scteken_ioctl,
89 	(sc_term_reset_t *)scteken_nop,
90 	scteken_default_attr,
91 	scteken_clear,
92 	(sc_term_notify_t *)scteken_nop,
93 	scteken_input,
94 	scteken_fkeystr,
95 	scteken_sync,
96 };
97 
98 SCTERM_MODULE(scteken, sc_term_scteken);
99 
100 static tf_bell_t	scteken_bell;
101 static tf_cursor_t	scteken_cursor;
102 static tf_putchar_t	scteken_putchar;
103 static tf_fill_t	scteken_fill;
104 static tf_copy_t	scteken_copy;
105 static tf_param_t	scteken_param;
106 static tf_respond_t	scteken_respond;
107 
108 static const teken_funcs_t scteken_funcs = {
109 	.tf_bell	= scteken_bell,
110 	.tf_cursor	= scteken_cursor,
111 	.tf_putchar	= scteken_putchar,
112 	.tf_fill	= scteken_fill,
113 	.tf_copy	= scteken_copy,
114 	.tf_param	= scteken_param,
115 	.tf_respond	= scteken_respond,
116 };
117 
118 static int
119 scteken_init(scr_stat *scp, void **softc, int code)
120 {
121 	teken_stat *ts;
122 	teken_attr_t ta;
123 
124 	if (*softc == NULL) {
125 		if (reserved_teken_stat.ts_busy)
126 			return (EINVAL);
127 		*softc = &reserved_teken_stat;
128 	}
129 	ts = *softc;
130 
131 	switch (code) {
132 	case SC_TE_COLD_INIT:
133 		++sc_term_scteken.te_refcount;
134 		ts->ts_busy = 1;
135 		/* FALLTHROUGH */
136 	case SC_TE_WARM_INIT:
137 		ta = *teken_get_defattr(&ts->ts_teken);
138 		teken_init(&ts->ts_teken, &scteken_funcs, scp);
139 		teken_set_defattr(&ts->ts_teken, &ta);
140 #ifndef TEKEN_UTF8
141 		teken_set_8bit(&ts->ts_teken);
142 #endif /* !TEKEN_UTF8 */
143 #ifdef TEKEN_CONS25
144 		teken_set_cons25(&ts->ts_teken);
145 #endif /* TEKEN_CONS25 */
146 		teken_set_cons25keys(&ts->ts_teken);
147 		scteken_sync_internal(scp, ts);
148 		break;
149 	}
150 
151 	return (0);
152 }
153 
154 static int
155 scteken_term(scr_stat *scp, void **softc)
156 {
157 
158 	if (*softc == &reserved_teken_stat) {
159 		*softc = NULL;
160 		reserved_teken_stat.ts_busy = 0;
161 	}
162 	--sc_term_scteken.te_refcount;
163 
164 	return (0);
165 }
166 
167 static void
168 scteken_puts(scr_stat *scp, u_char *buf, int len)
169 {
170 	teken_stat *ts = scp->ts;
171 
172 	scp->sc->write_in_progress++;
173 	teken_input(&ts->ts_teken, buf, len);
174 	scp->sc->write_in_progress--;
175 }
176 
177 static int
178 scteken_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
179 	     struct thread *td)
180 {
181 	teken_stat *ts = scp->ts;
182 	vid_info_t *vi;
183 	int attr;
184 
185 	switch (cmd) {
186 	case GIO_ATTR:      	/* get current attributes */
187 		*(int*)data =
188 		    scteken_te_to_sc_attr(teken_get_curattr(&ts->ts_teken));
189 		return (0);
190 	case CONS_GETINFO:  	/* get current (virtual) console info */
191 		vi = (vid_info_t *)data;
192 		if (vi->size != sizeof(struct vid_info))
193 			return EINVAL;
194 
195 		attr = scteken_te_to_sc_attr(teken_get_defattr(&ts->ts_teken));
196 		vi->mv_norm.fore = attr & 0x0f;
197 		vi->mv_norm.back = (attr >> 4) & 0x0f;
198 		vi->mv_rev.fore = vi->mv_norm.back;
199 		vi->mv_rev.back = vi->mv_norm.fore;
200 		/*
201 		 * The other fields are filled by the upper routine. XXX
202 		 */
203 		return (ENOIOCTL);
204 	}
205 
206 	return (ENOIOCTL);
207 }
208 
209 static void
210 scteken_default_attr(scr_stat *scp, int color, int rev_color)
211 {
212 	teken_stat *ts = scp->ts;
213 	teken_attr_t ta;
214 
215 	scteken_sc_to_te_attr(color, &ta);
216 	teken_set_defattr(&ts->ts_teken, &ta);
217 }
218 
219 static void
220 scteken_clear(scr_stat *scp)
221 {
222 	teken_stat *ts = scp->ts;
223 
224 	sc_move_cursor(scp, 0, 0);
225 	scteken_sync_internal(scp, ts);
226 	sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20],
227 		     scteken_te_to_sc_attr(teken_get_curattr(&ts->ts_teken))
228 		     << 8);
229 	mark_all(scp);
230 }
231 
232 static int
233 scteken_input(scr_stat *scp, int c, struct tty *tp)
234 {
235 
236 	return FALSE;
237 }
238 
239 static const char *
240 scteken_fkeystr(scr_stat *scp, int c)
241 {
242 	teken_stat *ts = scp->ts;
243 	unsigned int k;
244 
245 	switch (c) {
246 	case FKEY | F(1):  case FKEY | F(2):  case FKEY | F(3):
247 	case FKEY | F(4):  case FKEY | F(5):  case FKEY | F(6):
248 	case FKEY | F(7):  case FKEY | F(8):  case FKEY | F(9):
249 	case FKEY | F(10): case FKEY | F(11): case FKEY | F(12):
250 		k = TKEY_F1 + c - (FKEY | F(1));
251 		break;
252 	case FKEY | F(49):
253 		k = TKEY_HOME;
254 		break;
255 	case FKEY | F(50):
256 		k = TKEY_UP;
257 		break;
258 	case FKEY | F(51):
259 		k = TKEY_PAGE_UP;
260 		break;
261 	case FKEY | F(53):
262 		k = TKEY_LEFT;
263 		break;
264 	case FKEY | F(55):
265 		k = TKEY_RIGHT;
266 		break;
267 	case FKEY | F(57):
268 		k = TKEY_END;
269 		break;
270 	case FKEY | F(58):
271 		k = TKEY_DOWN;
272 		break;
273 	case FKEY | F(59):
274 		k = TKEY_PAGE_DOWN;
275 		break;
276 	case FKEY | F(60):
277 		k = TKEY_INSERT;
278 		break;
279 	case FKEY | F(61):
280 		k = TKEY_DELETE;
281 		break;
282 	default:
283 		return (NULL);
284 	}
285 
286 	return (teken_get_sequence(&ts->ts_teken, k));
287 }
288 
289 static void
290 scteken_sync_internal(scr_stat *scp, teken_stat *ts)
291 {
292 	teken_pos_t tp;
293 
294 	tp.tp_col = scp->xsize;
295 	tp.tp_row = scp->ysize;
296 	teken_set_winsize_noreset(&ts->ts_teken, &tp);
297 	tp.tp_col = scp->xpos;
298 	tp.tp_row = scp->ypos;
299 	teken_set_cursor(&ts->ts_teken, &tp);
300 }
301 
302 static void
303 scteken_sync(scr_stat *scp)
304 {
305 	scteken_sync_internal(scp, scp->ts);
306 }
307 
308 static void
309 scteken_nop(void)
310 {
311 
312 }
313 
314 /*
315  * libteken routines.
316  */
317 
318 static const teken_color_t sc_to_te_color[] = {
319 	TC_BLACK,     TC_BLUE,         TC_GREEN,     TC_CYAN,
320 	TC_RED,       TC_MAGENTA,      TC_BROWN,     TC_WHITE,
321 };
322 
323 static const unsigned char te_to_sc_color[] = {
324 	FG_BLACK,     FG_RED,          FG_GREEN,     FG_BROWN,
325 	FG_BLUE,      FG_MAGENTA,      FG_CYAN,      FG_LIGHTGREY,
326 };
327 
328 static void
329 scteken_sc_to_te_attr(unsigned char color, teken_attr_t *a)
330 {
331 
332 	/*
333 	 * Conversions of attrs are not reversible.  Since sc attrs are
334 	 * pure colors in the simplest mode (16-color graphics) and the
335 	 * API is too deficient to tell us the mode, always convert to
336 	 * pure colors.  The conversion is essentially the identity except
337 	 * for reordering the non-brightness bits in the 2 color numbers.
338 	 */
339 	a->ta_format = 0;
340 	a->ta_fgcolor = sc_to_te_color[color & 7] | (color & 8);
341 	a->ta_bgcolor = sc_to_te_color[(color >> 4) & 7] | ((color >> 4) & 8);
342 }
343 
344 static int
345 scteken_te_to_sc_attr(const teken_attr_t *a)
346 {
347 	int attr;
348 	teken_color_t fg, bg;
349 
350 	if (a->ta_format & TF_REVERSE) {
351 		fg = a->ta_bgcolor;
352 		bg = a->ta_fgcolor;
353 	} else {
354 		fg = a->ta_fgcolor;
355 		bg = a->ta_bgcolor;
356 	}
357 	if (fg >= 16)
358 		fg = teken_256to16(fg);
359 	if (bg >= 16)
360 		bg = teken_256to16(bg);
361 	attr = te_to_sc_color[fg & 7] | (fg & 8) |
362 	    ((te_to_sc_color[bg & 7] | (bg & 8)) << 4);
363 
364 	/* XXX: underline mapping for Hercules adapter can be better. */
365 	if (a->ta_format & (TF_BOLD | TF_UNDERLINE))
366 		attr ^= 8;
367 	if (a->ta_format & TF_BLINK)
368 		attr ^= 0x80;
369 
370 	return (attr);
371 }
372 
373 static void
374 scteken_bell(void *arg)
375 {
376 	scr_stat *scp = arg;
377 
378 	sc_bell(scp, scp->bell_pitch, scp->bell_duration);
379 }
380 
381 static void
382 scteken_cursor(void *arg, const teken_pos_t *p)
383 {
384 	scr_stat *scp = arg;
385 
386 	sc_move_cursor(scp, p->tp_col, p->tp_row);
387 }
388 
389 #ifdef TEKEN_UTF8
390 struct unicp437 {
391 	uint16_t	unicode_base;
392 	uint8_t		cp437_base;
393 	uint8_t		length;
394 };
395 
396 static const struct unicp437 cp437table[] = {
397 	{ 0x0020, 0x20, 0x5e }, { 0x00a0, 0x20, 0x00 },
398 	{ 0x00a1, 0xad, 0x00 }, { 0x00a2, 0x9b, 0x00 },
399 	{ 0x00a3, 0x9c, 0x00 }, { 0x00a5, 0x9d, 0x00 },
400 	{ 0x00a7, 0x15, 0x00 }, { 0x00aa, 0xa6, 0x00 },
401 	{ 0x00ab, 0xae, 0x00 }, { 0x00ac, 0xaa, 0x00 },
402 	{ 0x00b0, 0xf8, 0x00 }, { 0x00b1, 0xf1, 0x00 },
403 	{ 0x00b2, 0xfd, 0x00 }, { 0x00b5, 0xe6, 0x00 },
404 	{ 0x00b6, 0x14, 0x00 }, { 0x00b7, 0xfa, 0x00 },
405 	{ 0x00ba, 0xa7, 0x00 }, { 0x00bb, 0xaf, 0x00 },
406 	{ 0x00bc, 0xac, 0x00 }, { 0x00bd, 0xab, 0x00 },
407 	{ 0x00bf, 0xa8, 0x00 }, { 0x00c0, 0x41, 0x00 },
408 	{ 0x00c1, 0x41, 0x00 }, { 0x00c2, 0x41, 0x00 },
409 	{ 0x00c4, 0x8e, 0x01 }, { 0x00c6, 0x92, 0x00 },
410 	{ 0x00c7, 0x80, 0x00 }, { 0x00c8, 0x45, 0x00 },
411 	{ 0x00c9, 0x90, 0x00 }, { 0x00ca, 0x45, 0x00 },
412 	{ 0x00cb, 0x45, 0x00 }, { 0x00cc, 0x49, 0x00 },
413 	{ 0x00cd, 0x49, 0x00 }, { 0x00ce, 0x49, 0x00 },
414 	{ 0x00cf, 0x49, 0x00 }, { 0x00d1, 0xa5, 0x00 },
415 	{ 0x00d2, 0x4f, 0x00 }, { 0x00d3, 0x4f, 0x00 },
416 	{ 0x00d4, 0x4f, 0x00 }, { 0x00d6, 0x99, 0x00 },
417 	{ 0x00d9, 0x55, 0x00 }, { 0x00da, 0x55, 0x00 },
418 	{ 0x00db, 0x55, 0x00 }, { 0x00dc, 0x9a, 0x00 },
419 	{ 0x00df, 0xe1, 0x00 }, { 0x00e0, 0x85, 0x00 },
420 	{ 0x00e1, 0xa0, 0x00 }, { 0x00e2, 0x83, 0x00 },
421 	{ 0x00e4, 0x84, 0x00 }, { 0x00e5, 0x86, 0x00 },
422 	{ 0x00e6, 0x91, 0x00 }, { 0x00e7, 0x87, 0x00 },
423 	{ 0x00e8, 0x8a, 0x00 }, { 0x00e9, 0x82, 0x00 },
424 	{ 0x00ea, 0x88, 0x01 }, { 0x00ec, 0x8d, 0x00 },
425 	{ 0x00ed, 0xa1, 0x00 }, { 0x00ee, 0x8c, 0x00 },
426 	{ 0x00ef, 0x8b, 0x00 }, { 0x00f0, 0xeb, 0x00 },
427 	{ 0x00f1, 0xa4, 0x00 }, { 0x00f2, 0x95, 0x00 },
428 	{ 0x00f3, 0xa2, 0x00 }, { 0x00f4, 0x93, 0x00 },
429 	{ 0x00f6, 0x94, 0x00 }, { 0x00f7, 0xf6, 0x00 },
430 	{ 0x00f8, 0xed, 0x00 }, { 0x00f9, 0x97, 0x00 },
431 	{ 0x00fa, 0xa3, 0x00 }, { 0x00fb, 0x96, 0x00 },
432 	{ 0x00fc, 0x81, 0x00 }, { 0x00ff, 0x98, 0x00 },
433 	{ 0x013f, 0x4c, 0x00 }, { 0x0140, 0x6c, 0x00 },
434 	{ 0x0192, 0x9f, 0x00 }, { 0x0393, 0xe2, 0x00 },
435 	{ 0x0398, 0xe9, 0x00 }, { 0x03a3, 0xe4, 0x00 },
436 	{ 0x03a6, 0xe8, 0x00 }, { 0x03a9, 0xea, 0x00 },
437 	{ 0x03b1, 0xe0, 0x01 }, { 0x03b4, 0xeb, 0x00 },
438 	{ 0x03b5, 0xee, 0x00 }, { 0x03bc, 0xe6, 0x00 },
439 	{ 0x03c0, 0xe3, 0x00 }, { 0x03c3, 0xe5, 0x00 },
440 	{ 0x03c4, 0xe7, 0x00 }, { 0x03c6, 0xed, 0x00 },
441 	{ 0x03d5, 0xed, 0x00 }, { 0x2010, 0x2d, 0x00 },
442 	{ 0x2014, 0x2d, 0x00 }, { 0x2018, 0x60, 0x00 },
443 	{ 0x2019, 0x27, 0x00 }, { 0x201c, 0x22, 0x00 },
444 	{ 0x201d, 0x22, 0x00 }, { 0x2022, 0x07, 0x00 },
445 	{ 0x203c, 0x13, 0x00 }, { 0x207f, 0xfc, 0x00 },
446 	{ 0x20a7, 0x9e, 0x00 }, { 0x20ac, 0xee, 0x00 },
447 	{ 0x2126, 0xea, 0x00 }, { 0x2190, 0x1b, 0x00 },
448 	{ 0x2191, 0x18, 0x00 }, { 0x2192, 0x1a, 0x00 },
449 	{ 0x2193, 0x19, 0x00 }, { 0x2194, 0x1d, 0x00 },
450 	{ 0x2195, 0x12, 0x00 }, { 0x21a8, 0x17, 0x00 },
451 	{ 0x2202, 0xeb, 0x00 }, { 0x2208, 0xee, 0x00 },
452 	{ 0x2211, 0xe4, 0x00 }, { 0x2212, 0x2d, 0x00 },
453 	{ 0x2219, 0xf9, 0x00 }, { 0x221a, 0xfb, 0x00 },
454 	{ 0x221e, 0xec, 0x00 }, { 0x221f, 0x1c, 0x00 },
455 	{ 0x2229, 0xef, 0x00 }, { 0x2248, 0xf7, 0x00 },
456 	{ 0x2261, 0xf0, 0x00 }, { 0x2264, 0xf3, 0x00 },
457 	{ 0x2265, 0xf2, 0x00 }, { 0x2302, 0x7f, 0x00 },
458 	{ 0x2310, 0xa9, 0x00 }, { 0x2320, 0xf4, 0x00 },
459 	{ 0x2321, 0xf5, 0x00 }, { 0x2500, 0xc4, 0x00 },
460 	{ 0x2502, 0xb3, 0x00 }, { 0x250c, 0xda, 0x00 },
461 	{ 0x2510, 0xbf, 0x00 }, { 0x2514, 0xc0, 0x00 },
462 	{ 0x2518, 0xd9, 0x00 }, { 0x251c, 0xc3, 0x00 },
463 	{ 0x2524, 0xb4, 0x00 }, { 0x252c, 0xc2, 0x00 },
464 	{ 0x2534, 0xc1, 0x00 }, { 0x253c, 0xc5, 0x00 },
465 	{ 0x2550, 0xcd, 0x00 }, { 0x2551, 0xba, 0x00 },
466 	{ 0x2552, 0xd5, 0x00 }, { 0x2553, 0xd6, 0x00 },
467 	{ 0x2554, 0xc9, 0x00 }, { 0x2555, 0xb8, 0x00 },
468 	{ 0x2556, 0xb7, 0x00 }, { 0x2557, 0xbb, 0x00 },
469 	{ 0x2558, 0xd4, 0x00 }, { 0x2559, 0xd3, 0x00 },
470 	{ 0x255a, 0xc8, 0x00 }, { 0x255b, 0xbe, 0x00 },
471 	{ 0x255c, 0xbd, 0x00 }, { 0x255d, 0xbc, 0x00 },
472 	{ 0x255e, 0xc6, 0x01 }, { 0x2560, 0xcc, 0x00 },
473 	{ 0x2561, 0xb5, 0x00 }, { 0x2562, 0xb6, 0x00 },
474 	{ 0x2563, 0xb9, 0x00 }, { 0x2564, 0xd1, 0x01 },
475 	{ 0x2566, 0xcb, 0x00 }, { 0x2567, 0xcf, 0x00 },
476 	{ 0x2568, 0xd0, 0x00 }, { 0x2569, 0xca, 0x00 },
477 	{ 0x256a, 0xd8, 0x00 }, { 0x256b, 0xd7, 0x00 },
478 	{ 0x256c, 0xce, 0x00 }, { 0x2580, 0xdf, 0x00 },
479 	{ 0x2584, 0xdc, 0x00 }, { 0x2588, 0xdb, 0x00 },
480 	{ 0x258c, 0xdd, 0x00 }, { 0x2590, 0xde, 0x00 },
481 	{ 0x2591, 0xb0, 0x02 }, { 0x25a0, 0xfe, 0x00 },
482 	{ 0x25ac, 0x16, 0x00 },
483 	{ 0x25ae, 0xdb, 0x00 }, { 0x25b2, 0x1e, 0x00 },
484 	{ 0x25ba, 0x10, 0x00 }, { 0x25bc, 0x1f, 0x00 },
485 	{ 0x25c4, 0x11, 0x00 }, { 0x25cb, 0x09, 0x00 },
486 	{ 0x25d8, 0x08, 0x00 }, { 0x25d9, 0x0a, 0x00 },
487 	{ 0x263a, 0x01, 0x01 }, { 0x263c, 0x0f, 0x00 },
488 	{ 0x2640, 0x0c, 0x00 }, { 0x2642, 0x0b, 0x00 },
489 	{ 0x2660, 0x06, 0x00 }, { 0x2663, 0x05, 0x00 },
490 	{ 0x2665, 0x03, 0x01 }, { 0x266a, 0x0d, 0x01 },
491 };
492 
493 static void
494 scteken_get_cp437(teken_char_t *c, int *attr)
495 {
496 	int min, mid, max;
497 
498 	min = 0;
499 	max = (sizeof(cp437table) / sizeof(struct unicp437)) - 1;
500 
501 	if (*c < cp437table[0].unicode_base ||
502 	    *c > cp437table[max].unicode_base + cp437table[max].length)
503 		goto bad;
504 
505 	while (max >= min) {
506 		mid = (min + max) / 2;
507 		if (*c < cp437table[mid].unicode_base) {
508 			max = mid - 1;
509 		} else if (*c > cp437table[mid].unicode_base +
510 		    cp437table[mid].length) {
511 			min = mid + 1;
512 		} else {
513 			*c -= cp437table[mid].unicode_base;
514 			*c += cp437table[mid].cp437_base;
515 			return;
516 		}
517 	}
518 bad:
519 	/* Character not present in CP437. */
520 	*attr = (FG_RED|BG_BLACK) << 8;
521 	*c = '?';
522 }
523 #endif /* TEKEN_UTF8 */
524 
525 static void
526 scteken_putchar(void *arg, const teken_pos_t *tp, teken_char_t c,
527     const teken_attr_t *a)
528 {
529 	scr_stat *scp = arg;
530 	u_char *map;
531 	u_char ch;
532 	vm_offset_t p;
533 	int cursor, attr;
534 
535 	/*
536 	 * No support for printing right hand sides for CJK fullwidth
537 	 * characters. Simply print a space and assume that the left
538 	 * hand side describes the entire character.
539 	 */
540 	attr = scteken_te_to_sc_attr(a) << 8;
541 	if (a->ta_format & TF_CJK_RIGHT)
542 		c = ' ';
543 #ifdef TEKEN_UTF8
544 	scteken_get_cp437(&c, &attr);
545 #endif /* TEKEN_UTF8 */
546 	ch = c;
547 
548 	map = scp->sc->scr_map;
549 
550 	cursor = tp->tp_row * scp->xsize + tp->tp_col;
551 	p = sc_vtb_pointer(&scp->vtb, cursor);
552 	sc_vtb_putchar(&scp->vtb, p, map[ch], attr);
553 
554 	mark_for_update(scp, cursor);
555 	/*
556 	 * XXX: Why do we need this? Only marking `cursor' should be
557 	 * enough. Without this line, we get artifacts.
558 	 */
559 	mark_for_update(scp, imin(cursor + 1, scp->xsize * scp->ysize - 1));
560 }
561 
562 static void
563 scteken_fill(void *arg, const teken_rect_t *r, teken_char_t c,
564     const teken_attr_t *a)
565 {
566 	scr_stat *scp = arg;
567 	u_char *map;
568 	u_char ch;
569 	unsigned int width;
570 	int attr, row;
571 
572 	attr = scteken_te_to_sc_attr(a) << 8;
573 #ifdef TEKEN_UTF8
574 	scteken_get_cp437(&c, &attr);
575 #endif /* TEKEN_UTF8 */
576 	ch = c;
577 
578 	map = scp->sc->scr_map;
579 
580 	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
581 		/* Single contiguous region to fill. */
582 		sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
583 		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize,
584 		    map[ch], attr);
585 	} else {
586 		/* Fill display line by line. */
587 		width = r->tr_end.tp_col - r->tr_begin.tp_col;
588 
589 		for (row = r->tr_begin.tp_row; row < r->tr_end.tp_row; row++) {
590 			sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row *
591 			    scp->xsize + r->tr_begin.tp_col,
592 			    width, map[ch], attr);
593 		}
594 	}
595 
596 	/* Mark begin and end positions to be refreshed. */
597 	mark_for_update(scp,
598 	    r->tr_begin.tp_row * scp->xsize + r->tr_begin.tp_col);
599 	mark_for_update(scp,
600 	    (r->tr_end.tp_row - 1) * scp->xsize + (r->tr_end.tp_col - 1));
601 	sc_remove_cutmarking(scp);
602 }
603 
604 static void
605 scteken_copy(void *arg, const teken_rect_t *r, const teken_pos_t *p)
606 {
607 	scr_stat *scp = arg;
608 	unsigned int width;
609 	int src, dst, end;
610 
611 #ifndef SC_NO_HISTORY
612 	/*
613 	 * We count a line of input as history if we perform a copy of
614 	 * one whole line upward. In other words: if a line of text gets
615 	 * overwritten by a rectangle that's right below it.
616 	 */
617 	if (scp->history != NULL &&
618 	    r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize &&
619 	    r->tr_begin.tp_row == p->tp_row + 1) {
620 		sc_hist_save_one_line(scp, p->tp_row);
621 	}
622 #endif
623 
624 	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
625 		/* Single contiguous region to copy. */
626 		sc_vtb_move(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
627 		    p->tp_row * scp->xsize,
628 		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize);
629 	} else {
630 		/* Copy line by line. */
631 		width = r->tr_end.tp_col - r->tr_begin.tp_col;
632 
633 		if (p->tp_row < r->tr_begin.tp_row) {
634 			/* Copy from top to bottom. */
635 			src = r->tr_begin.tp_row * scp->xsize +
636 			    r->tr_begin.tp_col;
637 			end = r->tr_end.tp_row * scp->xsize +
638 			    r->tr_end.tp_col;
639 			dst = p->tp_row * scp->xsize + p->tp_col;
640 
641 			while (src < end) {
642 				sc_vtb_move(&scp->vtb, src, dst, width);
643 
644 				src += scp->xsize;
645 				dst += scp->xsize;
646 			}
647 		} else {
648 			/* Copy from bottom to top. */
649 			src = (r->tr_end.tp_row - 1) * scp->xsize +
650 			    r->tr_begin.tp_col;
651 			end = r->tr_begin.tp_row * scp->xsize +
652 			    r->tr_begin.tp_col;
653 			dst = (p->tp_row + r->tr_end.tp_row -
654 			    r->tr_begin.tp_row - 1) * scp->xsize + p->tp_col;
655 
656 			while (src >= end) {
657 				sc_vtb_move(&scp->vtb, src, dst, width);
658 
659 				src -= scp->xsize;
660 				dst -= scp->xsize;
661 			}
662 		}
663 	}
664 
665 	/* Mark begin and end positions to be refreshed. */
666 	mark_for_update(scp,
667 	    p->tp_row * scp->xsize + p->tp_col);
668 	mark_for_update(scp,
669 	    (p->tp_row + r->tr_end.tp_row - r->tr_begin.tp_row - 1) *
670 	    scp->xsize +
671 	    (p->tp_col + r->tr_end.tp_col - r->tr_begin.tp_col - 1));
672 	sc_remove_cutmarking(scp);
673 }
674 
675 static void
676 scteken_param(void *arg, int cmd, unsigned int value)
677 {
678 	static int cattrs[] = {
679 		0,					/* block */
680 		CONS_BLINK_CURSOR,			/* blinking block */
681 		CONS_CHAR_CURSOR,			/* underline */
682 		CONS_CHAR_CURSOR | CONS_BLINK_CURSOR,	/* blinking underline */
683 		CONS_RESET_CURSOR,			/* reset to default */
684 		CONS_HIDDEN_CURSOR,			/* hide cursor */
685 	};
686 	static int tcattrs[] = {
687 		CONS_RESET_CURSOR | CONS_LOCAL_CURSOR,	/* normal */
688 		CONS_HIDDEN_CURSOR | CONS_LOCAL_CURSOR,	/* invisible */
689 	};
690 	scr_stat *scp = arg;
691 	int flags, n, v0, v1, v2;
692 
693 	switch (cmd) {
694 	case TP_SETBORDER:
695 		scp->border = value & 0xff;
696 		if (scp == scp->sc->cur_scp)
697 			sc_set_border(scp, scp->border);
698 		break;
699 	case TP_SETGLOBALCURSOR:
700 		n = value & 0xff;
701 		v0 = (value >> 8) & 0xff;
702 		v1 = (value >> 16) & 0xff;
703 		v2 = (value >> 24) & 0xff;
704 		switch (n) {
705 		case 1:	/* flags only */
706 			if (v0 < sizeof(cattrs) / sizeof(cattrs[0]))
707 				v0 = cattrs[v0];
708 			else /* backward compatibility */
709 				v0 = cattrs[v0 & 0x3];
710 			sc_change_cursor_shape(scp, v0, -1, -1);
711 			break;
712 		case 2:
713 			v2 = 0;
714 			v0 &= 0x1f;	/* backward compatibility */
715 			v1 &= 0x1f;
716 			/* FALL THROUGH */
717 		case 3:	/* base and height */
718 			if (v2 == 0)	/* count from top */
719 				sc_change_cursor_shape(scp, -1,
720 				    scp->font_size - v1 - 1,
721 				    v1 - v0 + 1);
722 			else if (v2 == 1) /* count from bottom */
723 				sc_change_cursor_shape(scp, -1,
724 				    v0, v1 - v0 + 1);
725 			break;
726 		}
727 		break;
728 	case TP_SETLOCALCURSOR:
729 		if (value < sizeof(tcattrs) / sizeof(tcattrs[0]))
730 			sc_change_cursor_shape(scp, tcattrs[value], -1, -1);
731 		else if (value == 2) {
732 			sc_change_cursor_shape(scp,
733 			    CONS_RESET_CURSOR | CONS_LOCAL_CURSOR, -1, -1);
734 			flags = scp->base_curs_attr.flags ^ CONS_BLINK_CURSOR;
735 			sc_change_cursor_shape(scp,
736 			    flags | CONS_LOCAL_CURSOR, -1, -1);
737 		}
738 		break;
739 	case TP_SHOWCURSOR:
740 		if (value != 0)
741 			flags = scp->base_curs_attr.flags & ~CONS_HIDDEN_CURSOR;
742 		else
743 			flags = scp->base_curs_attr.flags | CONS_HIDDEN_CURSOR;
744 		sc_change_cursor_shape(scp, flags | CONS_LOCAL_CURSOR, -1, -1);
745 		break;
746 	case TP_SWITCHVT:
747 		sc_switch_scr(scp->sc, value);
748 		break;
749 	case TP_SETBELLPD:
750 		scp->bell_pitch = TP_SETBELLPD_PITCH(value);
751 		scp->bell_duration = TP_SETBELLPD_DURATION(value);
752 		break;
753 	case TP_MOUSE:
754 		scp->mouse_level = value;
755 		break;
756 	}
757 }
758 
759 static void
760 scteken_respond(void *arg, const void *buf, size_t len)
761 {
762 	scr_stat *scp = arg;
763 
764 	sc_respond(scp, buf, len, 0);
765 }
766