xref: /netbsd-src/sys/dev/wscons/wskbdutil.c (revision 8b0f9554ff8762542c4defc4f70e1eb76fb508fa)
1 /*	$NetBSD: wskbdutil.c,v 1.14 2007/01/29 01:52:45 hubertf Exp $	*/
2 
3 /*-
4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Juergen Hannken-Illjes.
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  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *	This product includes software developed by the NetBSD
21  *	Foundation, Inc. and its contributors.
22  * 4. Neither the name of The NetBSD Foundation nor the names of its
23  *    contributors may be used to endorse or promote products derived
24  *    from this software without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36  * POSSIBILITY OF SUCH DAMAGE.
37  */
38 
39 #include <sys/cdefs.h>
40 __KERNEL_RCSID(0, "$NetBSD: wskbdutil.c,v 1.14 2007/01/29 01:52:45 hubertf Exp $");
41 
42 #include <sys/param.h>
43 #include <sys/errno.h>
44 #include <sys/systm.h>
45 #include <sys/malloc.h>
46 #include <dev/wscons/wsksymdef.h>
47 #include <dev/wscons/wsksymvar.h>
48 
49 static struct compose_tab_s {
50 	keysym_t elem[2];
51 	keysym_t result;
52 } compose_tab[] = {
53 	{ { KS_plus,			KS_plus },		KS_numbersign },
54 	{ { KS_a,			KS_a },			KS_at },
55 	{ { KS_parenleft,		KS_parenleft },		KS_bracketleft },
56 	{ { KS_slash,			KS_slash },		KS_backslash },
57 	{ { KS_parenright,		KS_parenright },	KS_bracketright },
58 	{ { KS_parenleft,		KS_minus },		KS_braceleft },
59 	{ { KS_slash,			KS_minus },		KS_bar },
60 	{ { KS_parenright,		KS_minus },		KS_braceright },
61 	{ { KS_exclam,			KS_exclam },		KS_exclamdown },
62 	{ { KS_c,			KS_slash },		KS_cent },
63 	{ { KS_l,			KS_minus },		KS_sterling },
64 	{ { KS_y,			KS_minus },		KS_yen },
65 	{ { KS_s,			KS_o },			KS_section },
66 	{ { KS_x,			KS_o },			KS_currency },
67 	{ { KS_c,			KS_o },			KS_copyright },
68 	{ { KS_less,			KS_less },		KS_guillemotleft },
69 	{ { KS_greater,			KS_greater },		KS_guillemotright },
70 	{ { KS_question,		KS_question },		KS_questiondown },
71 	{ { KS_dead_acute,		KS_space },		KS_acute },
72 	{ { KS_dead_grave,		KS_space },		KS_grave },
73 	{ { KS_dead_tilde,		KS_space },		KS_asciitilde },
74 	{ { KS_dead_circumflex,		KS_space },		KS_asciicircum },
75 	{ { KS_dead_circumflex,		KS_A },			KS_Acircumflex },
76 	{ { KS_dead_diaeresis,		KS_A },			KS_Adiaeresis },
77 	{ { KS_dead_grave,		KS_A },			KS_Agrave },
78 	{ { KS_dead_abovering,		KS_A },			KS_Aring },
79 	{ { KS_dead_tilde,		KS_A },			KS_Atilde },
80 	{ { KS_dead_cedilla,		KS_C },			KS_Ccedilla },
81 	{ { KS_dead_acute,		KS_E },			KS_Eacute },
82 	{ { KS_dead_circumflex,		KS_E },			KS_Ecircumflex },
83 	{ { KS_dead_diaeresis,		KS_E },			KS_Ediaeresis },
84 	{ { KS_dead_grave,		KS_E },			KS_Egrave },
85 	{ { KS_dead_acute,		KS_I },			KS_Iacute },
86 	{ { KS_dead_circumflex,		KS_I },			KS_Icircumflex },
87 	{ { KS_dead_diaeresis,		KS_I },			KS_Idiaeresis },
88 	{ { KS_dead_grave,		KS_I },			KS_Igrave },
89 	{ { KS_dead_tilde,		KS_N },			KS_Ntilde },
90 	{ { KS_dead_acute,		KS_O },			KS_Oacute },
91 	{ { KS_dead_circumflex,		KS_O },			KS_Ocircumflex },
92 	{ { KS_dead_diaeresis,		KS_O },			KS_Odiaeresis },
93 	{ { KS_dead_grave,		KS_O },			KS_Ograve },
94 	{ { KS_dead_tilde,		KS_O },			KS_Otilde },
95 	{ { KS_dead_acute,		KS_U },			KS_Uacute },
96 	{ { KS_dead_circumflex,		KS_U },			KS_Ucircumflex },
97 	{ { KS_dead_diaeresis,		KS_U },			KS_Udiaeresis },
98 	{ { KS_dead_grave,		KS_U },			KS_Ugrave },
99 	{ { KS_dead_acute,		KS_Y },			KS_Yacute },
100 	{ { KS_dead_acute,		KS_a },			KS_aacute },
101 	{ { KS_dead_circumflex,		KS_a },			KS_acircumflex },
102 	{ { KS_dead_diaeresis,		KS_a },			KS_adiaeresis },
103 	{ { KS_dead_grave,		KS_a },			KS_agrave },
104 	{ { KS_dead_abovering,		KS_a },			KS_aring },
105 	{ { KS_dead_tilde,		KS_a },			KS_atilde },
106 	{ { KS_dead_cedilla,		KS_c },			KS_ccedilla },
107 	{ { KS_dead_acute,		KS_e },			KS_eacute },
108 	{ { KS_dead_circumflex,		KS_e },			KS_ecircumflex },
109 	{ { KS_dead_diaeresis,		KS_e },			KS_ediaeresis },
110 	{ { KS_dead_grave,		KS_e },			KS_egrave },
111 	{ { KS_dead_acute,		KS_i },			KS_iacute },
112 	{ { KS_dead_circumflex,		KS_i },			KS_icircumflex },
113 	{ { KS_dead_diaeresis,		KS_i },			KS_idiaeresis },
114 	{ { KS_dead_grave,		KS_i },			KS_igrave },
115 	{ { KS_dead_tilde,		KS_n },			KS_ntilde },
116 	{ { KS_dead_acute,		KS_o },			KS_oacute },
117 	{ { KS_dead_circumflex,		KS_o },			KS_ocircumflex },
118 	{ { KS_dead_diaeresis,		KS_o },			KS_odiaeresis },
119 	{ { KS_dead_grave,		KS_o },			KS_ograve },
120 	{ { KS_dead_tilde,		KS_o },			KS_otilde },
121 	{ { KS_dead_acute,		KS_u },			KS_uacute },
122 	{ { KS_dead_circumflex,		KS_u },			KS_ucircumflex },
123 	{ { KS_dead_diaeresis,		KS_u },			KS_udiaeresis },
124 	{ { KS_dead_grave,		KS_u },			KS_ugrave },
125 	{ { KS_dead_acute,		KS_y },			KS_yacute },
126 	{ { KS_dead_diaeresis,		KS_y },			KS_ydiaeresis },
127 	{ { KS_quotedbl,		KS_A },			KS_Adiaeresis },
128 	{ { KS_quotedbl,		KS_E },			KS_Ediaeresis },
129 	{ { KS_quotedbl,		KS_I },			KS_Idiaeresis },
130 	{ { KS_quotedbl,		KS_O },			KS_Odiaeresis },
131 	{ { KS_quotedbl,		KS_U },			KS_Udiaeresis },
132 	{ { KS_quotedbl,		KS_a },			KS_adiaeresis },
133 	{ { KS_quotedbl,		KS_e },			KS_ediaeresis },
134 	{ { KS_quotedbl,		KS_i },			KS_idiaeresis },
135 	{ { KS_quotedbl,		KS_o },			KS_odiaeresis },
136 	{ { KS_quotedbl,		KS_u },			KS_udiaeresis },
137 	{ { KS_quotedbl,		KS_y },			KS_ydiaeresis },
138 	{ { KS_acute,			KS_A },			KS_Aacute },
139 	{ { KS_asciicircum,		KS_A },			KS_Acircumflex },
140 	{ { KS_grave,			KS_A },			KS_Agrave },
141 	{ { KS_asterisk,		KS_A },			KS_Aring },
142 	{ { KS_asciitilde,		KS_A },			KS_Atilde },
143 	{ { KS_cedilla,			KS_C },			KS_Ccedilla },
144 	{ { KS_acute,			KS_E },			KS_Eacute },
145 	{ { KS_asciicircum,		KS_E },			KS_Ecircumflex },
146 	{ { KS_grave,			KS_E },			KS_Egrave },
147 	{ { KS_acute,			KS_I },			KS_Iacute },
148 	{ { KS_asciicircum,		KS_I },			KS_Icircumflex },
149 	{ { KS_grave,			KS_I },			KS_Igrave },
150 	{ { KS_asciitilde,		KS_N },			KS_Ntilde },
151 	{ { KS_acute,			KS_O },			KS_Oacute },
152 	{ { KS_asciicircum,		KS_O },			KS_Ocircumflex },
153 	{ { KS_grave,			KS_O },			KS_Ograve },
154 	{ { KS_asciitilde,		KS_O },			KS_Otilde },
155 	{ { KS_acute,			KS_U },			KS_Uacute },
156 	{ { KS_asciicircum,		KS_U },			KS_Ucircumflex },
157 	{ { KS_grave,			KS_U },			KS_Ugrave },
158 	{ { KS_acute,			KS_Y },			KS_Yacute },
159 	{ { KS_acute,			KS_a },			KS_aacute },
160 	{ { KS_asciicircum,		KS_a },			KS_acircumflex },
161 	{ { KS_grave,			KS_a },			KS_agrave },
162 	{ { KS_asterisk,		KS_a },			KS_aring },
163 	{ { KS_asciitilde,		KS_a },			KS_atilde },
164 	{ { KS_cedilla,			KS_c },			KS_ccedilla },
165 	{ { KS_acute,			KS_e },			KS_eacute },
166 	{ { KS_asciicircum,		KS_e },			KS_ecircumflex },
167 	{ { KS_grave,			KS_e },			KS_egrave },
168 	{ { KS_acute,			KS_i },			KS_iacute },
169 	{ { KS_asciicircum,		KS_i },			KS_icircumflex },
170 	{ { KS_grave,			KS_i },			KS_igrave },
171 	{ { KS_asciitilde,		KS_n },			KS_ntilde },
172 	{ { KS_acute,			KS_o },			KS_oacute },
173 	{ { KS_asciicircum,		KS_o },			KS_ocircumflex },
174 	{ { KS_grave,			KS_o },			KS_ograve },
175 	{ { KS_asciitilde,		KS_o },			KS_otilde },
176 	{ { KS_acute,			KS_u },			KS_uacute },
177 	{ { KS_asciicircum,		KS_u },			KS_ucircumflex },
178 	{ { KS_grave,			KS_u },			KS_ugrave },
179 	{ { KS_acute,			KS_y },			KS_yacute },
180 	{ { KS_dead_semi,		KS_gr_A },		KS_gr_At  },
181 	{ { KS_dead_semi,		KS_gr_E },		KS_gr_Et  },
182 	{ { KS_dead_semi,		KS_gr_H },		KS_gr_Ht  },
183 	{ { KS_dead_semi,		KS_gr_I },		KS_gr_It  },
184 	{ { KS_dead_semi,		KS_gr_O },		KS_gr_Ot  },
185 	{ { KS_dead_semi,		KS_gr_Y },		KS_gr_Yt  },
186 	{ { KS_dead_semi,		KS_gr_V },		KS_gr_Vt  },
187 	{ { KS_dead_colon,		KS_gr_I },		KS_gr_Id  },
188 	{ { KS_dead_colon,		KS_gr_Y },		KS_gr_Yd  },
189 	{ { KS_dead_semi,		KS_gr_a },		KS_gr_at  },
190 	{ { KS_dead_semi,		KS_gr_e },		KS_gr_et  },
191 	{ { KS_dead_semi,		KS_gr_h },		KS_gr_ht  },
192 	{ { KS_dead_semi,		KS_gr_i },		KS_gr_it  },
193 	{ { KS_dead_semi,		KS_gr_o },		KS_gr_ot  },
194 	{ { KS_dead_semi,		KS_gr_y },		KS_gr_yt  },
195 	{ { KS_dead_semi,		KS_gr_v },		KS_gr_vt  },
196 	{ { KS_dead_colon,		KS_gr_i },		KS_gr_id  },
197 	{ { KS_dead_colon,		KS_gr_y },		KS_gr_yd  }
198 };
199 
200 #define COMPOSE_SIZE	sizeof(compose_tab)/sizeof(compose_tab[0])
201 
202 static int compose_tab_inorder = 0;
203 
204 static inline int compose_tab_cmp(struct compose_tab_s *, struct compose_tab_s *);
205 static keysym_t ksym_upcase(keysym_t);
206 static void fillmapentry(const keysym_t *, int, struct wscons_keymap *);
207 
208 static inline int
209 compose_tab_cmp(struct compose_tab_s *i, struct compose_tab_s *j)
210 {
211 	if (i->elem[0] == j->elem[0])
212 		return(i->elem[1] - j->elem[1]);
213 	else
214 		return(i->elem[0] - j->elem[0]);
215 }
216 
217 keysym_t
218 wskbd_compose_value(keysym_t *compose_buf)
219 {
220 	int i, j, r;
221 	struct compose_tab_s v;
222 
223 	if (! compose_tab_inorder) {
224 		/* Insertion sort. */
225 		for (i = 1; i < COMPOSE_SIZE; i++) {
226 			v = compose_tab[i];
227 			/* find correct slot, moving others up */
228 			for (j = i; --j >= 0 && compose_tab_cmp(& v, & compose_tab[j]) < 0; )
229 				compose_tab[j + 1] = compose_tab[j];
230 			compose_tab[j + 1] = v;
231 		}
232 		compose_tab_inorder = 1;
233 	}
234 
235 	for (j = 0, i = COMPOSE_SIZE; i != 0; i /= 2) {
236 		if (compose_tab[j + i/2].elem[0] == compose_buf[0]) {
237 			if (compose_tab[j + i/2].elem[1] == compose_buf[1])
238 				return(compose_tab[j + i/2].result);
239 			r = compose_tab[j + i/2].elem[1] < compose_buf[1];
240 		} else
241 			r = compose_tab[j + i/2].elem[0] < compose_buf[0];
242 		if (r) {
243 			j += i/2 + 1;
244 			i--;
245 		}
246 	}
247 
248 	return(KS_voidSymbol);
249 }
250 
251 static const u_char latin1_to_upper[256] = {
252 /*      0  8  1  9  2  a  3  b  4  c  5  d  6  e  7  f               */
253 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 0 */
254 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 0 */
255 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 1 */
256 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 1 */
257 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 2 */
258 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 2 */
259 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 3 */
260 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 3 */
261 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 4 */
262 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 4 */
263 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 5 */
264 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 5 */
265 	0x00,  'A',  'B',  'C',  'D',  'E',  'F',  'G',		/* 6 */
266 	 'H',  'I',  'J',  'K',  'L',  'M',  'N',  'O',		/* 6 */
267 	 'P',  'Q',  'R',  'S',  'T',  'U',  'V',  'W',		/* 7 */
268 	 'X',  'Y',  'Z', 0x00, 0x00, 0x00, 0x00, 0x00,		/* 7 */
269 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 8 */
270 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 8 */
271 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 9 */
272 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* 9 */
273 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* a */
274 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* a */
275 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* b */
276 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* b */
277 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* c */
278 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* c */
279 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* d */
280 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* d */
281 	0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,		/* e */
282 	0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,		/* e */
283 	0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0x00,		/* f */
284 	0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0x00,		/* f */
285 };
286 
287 static keysym_t
288 ksym_upcase(keysym_t ksym)
289 {
290 	if (ksym >= KS_f1 && ksym <= KS_f20)
291 		return(KS_F1 - KS_f1 + ksym);
292 
293 	if (KS_GROUP(ksym) == KS_GROUP_Ascii && ksym <= 0xff &&
294 	    latin1_to_upper[ksym] != 0x00)
295 		return(latin1_to_upper[ksym]);
296 
297 	return(ksym);
298 }
299 
300 static void
301 fillmapentry(const keysym_t *kp, int len, struct wscons_keymap *mapentry)
302 {
303 	switch (len) {
304 	case 0:
305 		mapentry->group1[0] = KS_voidSymbol;
306 		mapentry->group1[1] = KS_voidSymbol;
307 		mapentry->group2[0] = KS_voidSymbol;
308 		mapentry->group2[1] = KS_voidSymbol;
309 		break;
310 
311 	case 1:
312 		mapentry->group1[0] = kp[0];
313 		mapentry->group1[1] = ksym_upcase(kp[0]);
314 		mapentry->group2[0] = mapentry->group1[0];
315 		mapentry->group2[1] = mapentry->group1[1];
316 		break;
317 
318 	case 2:
319 		mapentry->group1[0] = kp[0];
320 		mapentry->group1[1] = kp[1];
321 		mapentry->group2[0] = mapentry->group1[0];
322 		mapentry->group2[1] = mapentry->group1[1];
323 		break;
324 
325 	case 3:
326 		mapentry->group1[0] = kp[0];
327 		mapentry->group1[1] = kp[1];
328 		mapentry->group2[0] = kp[2];
329 		mapentry->group2[1] = ksym_upcase(kp[2]);
330 		break;
331 
332 	case 4:
333 		mapentry->group1[0] = kp[0];
334 		mapentry->group1[1] = kp[1];
335 		mapentry->group2[0] = kp[2];
336 		mapentry->group2[1] = kp[3];
337 		break;
338 
339 	}
340 }
341 
342 void
343 wskbd_get_mapentry(const struct wskbd_mapdata *mapdata, int kc,
344 	struct wscons_keymap *mapentry)
345 {
346 	kbd_t cur;
347 	const keysym_t *kp;
348 	const struct wscons_keydesc *mp;
349 	int l;
350 
351 	mapentry->command = KS_voidSymbol;
352 	mapentry->group1[0] = KS_voidSymbol;
353 	mapentry->group1[1] = KS_voidSymbol;
354 	mapentry->group2[0] = KS_voidSymbol;
355 	mapentry->group2[1] = KS_voidSymbol;
356 
357 	for (cur = mapdata->layout & ~KB_HANDLEDBYWSKBD; cur != 0; ) {
358 		mp = mapdata->keydesc;
359 		while (mp->map_size > 0) {
360 			if (mp->name == cur)
361 				break;
362 			mp++;
363 		}
364 
365 		/* If map not found, return */
366 		if (mp->map_size <= 0)
367 			return;
368 
369 		for (kp = mp->map; kp < mp->map + mp->map_size; kp++)
370 			if (KS_GROUP(*kp) == KS_GROUP_Keycode &&
371 			    KS_VALUE(*kp) == kc) {
372 				/* First skip keycode and possible command */
373 				kp++;
374 				if (KS_GROUP(*kp) == KS_GROUP_Command ||
375 				    *kp == KS_Cmd || *kp == KS_Cmd1 || *kp == KS_Cmd2)
376 					mapentry->command = *kp++;
377 
378 				for (l = 0; kp + l < mp->map + mp->map_size; l++)
379 					if (KS_GROUP(kp[l]) == KS_GROUP_Keycode)
380 						break;
381 				if (l > 4)
382 					panic("wskbd_get_mapentry: %d(%d): bad entry",
383 					      mp->name, *kp);
384 				fillmapentry(kp, l, mapentry);
385 				return;
386 			}
387 
388 		cur = mp->base;
389 	}
390 }
391 
392 void
393 wskbd_init_keymap(int newlen, struct wscons_keymap **map, int *maplen)
394 {
395 	int i;
396 
397 	if (newlen != *maplen) {
398 		if (*maplen > 0)
399 			free(*map, M_TEMP);
400 		*maplen = newlen;
401 		*map = malloc(newlen*sizeof(struct wscons_keymap),
402 			      M_TEMP, M_WAITOK);
403 	}
404 
405 	for (i = 0; i < *maplen; i++) {
406 		(*map)[i].command = KS_voidSymbol;
407 		(*map)[i].group1[0] = KS_voidSymbol;
408 		(*map)[i].group1[1] = KS_voidSymbol;
409 		(*map)[i].group2[0] = KS_voidSymbol;
410 		(*map)[i].group2[1] = KS_voidSymbol;
411 	}
412 }
413 
414 int
415 wskbd_load_keymap(const struct wskbd_mapdata *mapdata,
416 	struct wscons_keymap **map, int *maplen)
417 {
418 	int i, s, kc, stack_ptr;
419 	const keysym_t *kp;
420 	const struct wscons_keydesc *mp, *stack[10];
421 	kbd_t cur;
422 
423 	for (cur = mapdata->layout & ~KB_HANDLEDBYWSKBD, stack_ptr = 0;
424 	     cur != 0; stack_ptr++) {
425 		mp = mapdata->keydesc;
426 		while (mp->map_size > 0) {
427 			if (cur == 0 || mp->name == cur) {
428 				break;
429 			}
430 			mp++;
431 		}
432 
433 		if (stack_ptr == sizeof(stack)/sizeof(stack[0]))
434 			panic("wskbd_load_keymap: %d: recursion too deep",
435 			      mapdata->layout);
436 		if (mp->map_size <= 0)
437 			return(EINVAL);
438 
439 		stack[stack_ptr] = mp;
440 		cur = mp->base;
441 	}
442 
443 	for (i = 0, s = stack_ptr - 1; s >= 0; s--) {
444 		mp = stack[s];
445 		for (kp = mp->map; kp < mp->map + mp->map_size; kp++)
446 			if (KS_GROUP(*kp) == KS_GROUP_Keycode && KS_VALUE(*kp) > i)
447 				i = KS_VALUE(*kp);
448 	}
449 
450 	wskbd_init_keymap(i + 1, map, maplen);
451 
452 	for (s = stack_ptr - 1; s >= 0; s--) {
453 		mp = stack[s];
454 		for (kp = mp->map; kp < mp->map + mp->map_size; ) {
455 			if (KS_GROUP(*kp) != KS_GROUP_Keycode)
456 				panic("wskbd_load_keymap: %d(%d): bad entry",
457 				      mp->name, *kp);
458 
459 			kc = KS_VALUE(*kp);
460 			kp++;
461 
462 			if (KS_GROUP(*kp) == KS_GROUP_Command ||
463 			    *kp == KS_Cmd || *kp == KS_Cmd1 || *kp == KS_Cmd2) {
464 				(*map)[kc].command = *kp;
465 				kp++;
466 			}
467 
468 			for (i = 0; kp + i < mp->map + mp->map_size; i++)
469 				if (KS_GROUP(kp[i]) == KS_GROUP_Keycode)
470 					break;
471 
472 			if (i > 4)
473 				panic("wskbd_load_keymap: %d(%d): bad entry",
474 				      mp->name, *kp);
475 
476 			fillmapentry(kp, i, &(*map)[kc]);
477 			kp += i;
478 		}
479 	}
480 
481 	return(0);
482 }
483