1 /* $NetBSD: wskbdutil.c,v 1.10 2001/11/15 09:48:19 lukem 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 1.10 2001/11/15 09:48:19 lukem Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/cdefs.h> 44 #include <sys/errno.h> 45 #include <sys/systm.h> 46 #include <sys/malloc.h> 47 #include <dev/wscons/wsksymdef.h> 48 #include <dev/wscons/wsksymvar.h> 49 50 static struct compose_tab_s { 51 keysym_t elem[2]; 52 keysym_t result; 53 } compose_tab[] = { 54 { { KS_plus, KS_plus }, KS_numbersign }, 55 { { KS_a, KS_a }, KS_at }, 56 { { KS_parenleft, KS_parenleft }, KS_bracketleft }, 57 { { KS_slash, KS_slash }, KS_backslash }, 58 { { KS_parenright, KS_parenright }, KS_bracketright }, 59 { { KS_parenleft, KS_minus }, KS_braceleft }, 60 { { KS_slash, KS_minus }, KS_bar }, 61 { { KS_parenright, KS_minus }, KS_braceright }, 62 { { KS_exclam, KS_exclam }, KS_exclamdown }, 63 { { KS_c, KS_slash }, KS_cent }, 64 { { KS_l, KS_minus }, KS_sterling }, 65 { { KS_y, KS_minus }, KS_yen }, 66 { { KS_s, KS_o }, KS_section }, 67 { { KS_x, KS_o }, KS_currency }, 68 { { KS_c, KS_o }, KS_copyright }, 69 { { KS_less, KS_less }, KS_guillemotleft }, 70 { { KS_greater, KS_greater }, KS_guillemotright }, 71 { { KS_question, KS_question }, KS_questiondown }, 72 { { KS_dead_acute, KS_space }, KS_acute }, 73 { { KS_dead_grave, KS_space }, KS_grave }, 74 { { KS_dead_tilde, KS_space }, KS_asciitilde }, 75 { { KS_dead_circumflex, KS_space }, KS_asciicircum }, 76 { { KS_dead_circumflex, KS_A }, KS_Acircumflex }, 77 { { KS_dead_diaeresis, KS_A }, KS_Adiaeresis }, 78 { { KS_dead_grave, KS_A }, KS_Agrave }, 79 { { KS_dead_abovering, KS_A }, KS_Aring }, 80 { { KS_dead_tilde, KS_A }, KS_Atilde }, 81 { { KS_dead_cedilla, KS_C }, KS_Ccedilla }, 82 { { KS_dead_acute, KS_E }, KS_Eacute }, 83 { { KS_dead_circumflex, KS_E }, KS_Ecircumflex }, 84 { { KS_dead_diaeresis, KS_E }, KS_Ediaeresis }, 85 { { KS_dead_grave, KS_E }, KS_Egrave }, 86 { { KS_dead_acute, KS_I }, KS_Iacute }, 87 { { KS_dead_circumflex, KS_I }, KS_Icircumflex }, 88 { { KS_dead_diaeresis, KS_I }, KS_Idiaeresis }, 89 { { KS_dead_grave, KS_I }, KS_Igrave }, 90 { { KS_dead_tilde, KS_N }, KS_Ntilde }, 91 { { KS_dead_acute, KS_O }, KS_Oacute }, 92 { { KS_dead_circumflex, KS_O }, KS_Ocircumflex }, 93 { { KS_dead_diaeresis, KS_O }, KS_Odiaeresis }, 94 { { KS_dead_grave, KS_O }, KS_Ograve }, 95 { { KS_dead_tilde, KS_O }, KS_Otilde }, 96 { { KS_dead_acute, KS_U }, KS_Uacute }, 97 { { KS_dead_circumflex, KS_U }, KS_Ucircumflex }, 98 { { KS_dead_diaeresis, KS_U }, KS_Udiaeresis }, 99 { { KS_dead_grave, KS_U }, KS_Ugrave }, 100 { { KS_dead_acute, KS_Y }, KS_Yacute }, 101 { { KS_dead_acute, KS_a }, KS_aacute }, 102 { { KS_dead_circumflex, KS_a }, KS_acircumflex }, 103 { { KS_dead_diaeresis, KS_a }, KS_adiaeresis }, 104 { { KS_dead_grave, KS_a }, KS_agrave }, 105 { { KS_dead_abovering, KS_a }, KS_aring }, 106 { { KS_dead_tilde, KS_a }, KS_atilde }, 107 { { KS_dead_cedilla, KS_c }, KS_ccedilla }, 108 { { KS_dead_acute, KS_e }, KS_eacute }, 109 { { KS_dead_circumflex, KS_e }, KS_ecircumflex }, 110 { { KS_dead_diaeresis, KS_e }, KS_ediaeresis }, 111 { { KS_dead_grave, KS_e }, KS_egrave }, 112 { { KS_dead_acute, KS_i }, KS_iacute }, 113 { { KS_dead_circumflex, KS_i }, KS_icircumflex }, 114 { { KS_dead_diaeresis, KS_i }, KS_idiaeresis }, 115 { { KS_dead_grave, KS_i }, KS_igrave }, 116 { { KS_dead_tilde, KS_n }, KS_ntilde }, 117 { { KS_dead_acute, KS_o }, KS_oacute }, 118 { { KS_dead_circumflex, KS_o }, KS_ocircumflex }, 119 { { KS_dead_diaeresis, KS_o }, KS_odiaeresis }, 120 { { KS_dead_grave, KS_o }, KS_ograve }, 121 { { KS_dead_tilde, KS_o }, KS_otilde }, 122 { { KS_dead_acute, KS_u }, KS_uacute }, 123 { { KS_dead_circumflex, KS_u }, KS_ucircumflex }, 124 { { KS_dead_diaeresis, KS_u }, KS_udiaeresis }, 125 { { KS_dead_grave, KS_u }, KS_ugrave }, 126 { { KS_dead_acute, KS_y }, KS_yacute }, 127 { { KS_dead_diaeresis, KS_y }, KS_ydiaeresis }, 128 { { KS_quotedbl, KS_A }, KS_Adiaeresis }, 129 { { KS_quotedbl, KS_E }, KS_Ediaeresis }, 130 { { KS_quotedbl, KS_I }, KS_Idiaeresis }, 131 { { KS_quotedbl, KS_O }, KS_Odiaeresis }, 132 { { KS_quotedbl, KS_U }, KS_Udiaeresis }, 133 { { KS_quotedbl, KS_a }, KS_adiaeresis }, 134 { { KS_quotedbl, KS_e }, KS_ediaeresis }, 135 { { KS_quotedbl, KS_i }, KS_idiaeresis }, 136 { { KS_quotedbl, KS_o }, KS_odiaeresis }, 137 { { KS_quotedbl, KS_u }, KS_udiaeresis }, 138 { { KS_quotedbl, KS_y }, KS_ydiaeresis }, 139 { { KS_acute, KS_A }, KS_Aacute }, 140 { { KS_asciicircum, KS_A }, KS_Acircumflex }, 141 { { KS_grave, KS_A }, KS_Agrave }, 142 { { KS_asterisk, KS_A }, KS_Aring }, 143 { { KS_asciitilde, KS_A }, KS_Atilde }, 144 { { KS_cedilla, KS_C }, KS_Ccedilla }, 145 { { KS_acute, KS_E }, KS_Eacute }, 146 { { KS_asciicircum, KS_E }, KS_Ecircumflex }, 147 { { KS_grave, KS_E }, KS_Egrave }, 148 { { KS_acute, KS_I }, KS_Iacute }, 149 { { KS_asciicircum, KS_I }, KS_Icircumflex }, 150 { { KS_grave, KS_I }, KS_Igrave }, 151 { { KS_asciitilde, KS_N }, KS_Ntilde }, 152 { { KS_acute, KS_O }, KS_Oacute }, 153 { { KS_asciicircum, KS_O }, KS_Ocircumflex }, 154 { { KS_grave, KS_O }, KS_Ograve }, 155 { { KS_asciitilde, KS_O }, KS_Otilde }, 156 { { KS_acute, KS_U }, KS_Uacute }, 157 { { KS_asciicircum, KS_U }, KS_Ucircumflex }, 158 { { KS_grave, KS_U }, KS_Ugrave }, 159 { { KS_acute, KS_Y }, KS_Yacute }, 160 { { KS_acute, KS_a }, KS_aacute }, 161 { { KS_asciicircum, KS_a }, KS_acircumflex }, 162 { { KS_grave, KS_a }, KS_agrave }, 163 { { KS_asterisk, KS_a }, KS_aring }, 164 { { KS_asciitilde, KS_a }, KS_atilde }, 165 { { KS_cedilla, KS_c }, KS_ccedilla }, 166 { { KS_acute, KS_e }, KS_eacute }, 167 { { KS_asciicircum, KS_e }, KS_ecircumflex }, 168 { { KS_grave, KS_e }, KS_egrave }, 169 { { KS_acute, KS_i }, KS_iacute }, 170 { { KS_asciicircum, KS_i }, KS_icircumflex }, 171 { { KS_grave, KS_i }, KS_igrave }, 172 { { KS_asciitilde, KS_n }, KS_ntilde }, 173 { { KS_acute, KS_o }, KS_oacute }, 174 { { KS_asciicircum, KS_o }, KS_ocircumflex }, 175 { { KS_grave, KS_o }, KS_ograve }, 176 { { KS_asciitilde, KS_o }, KS_otilde }, 177 { { KS_acute, KS_u }, KS_uacute }, 178 { { KS_asciicircum, KS_u }, KS_ucircumflex }, 179 { { KS_grave, KS_u }, KS_ugrave }, 180 { { KS_acute, KS_y }, KS_yacute } 181 }; 182 183 #define COMPOSE_SIZE sizeof(compose_tab)/sizeof(compose_tab[0]) 184 185 static int compose_tab_inorder = 0; 186 187 static inline int compose_tab_cmp(struct compose_tab_s *, struct compose_tab_s *); 188 static keysym_t ksym_upcase(keysym_t); 189 static void fillmapentry(const keysym_t *, int, struct wscons_keymap *); 190 191 static inline int 192 compose_tab_cmp(struct compose_tab_s *i, struct compose_tab_s *j) 193 { 194 if (i->elem[0] == j->elem[0]) 195 return(i->elem[1] - j->elem[1]); 196 else 197 return(i->elem[0] - j->elem[0]); 198 } 199 200 keysym_t 201 wskbd_compose_value(keysym_t *compose_buf) 202 { 203 int i, j, r; 204 struct compose_tab_s v; 205 206 if (! compose_tab_inorder) { 207 /* Insertion sort. */ 208 for (i = 1; i < COMPOSE_SIZE; i++) { 209 v = compose_tab[i]; 210 /* find correct slot, moving others up */ 211 for (j = i; --j >= 0 && compose_tab_cmp(& v, & compose_tab[j]) < 0; ) 212 compose_tab[j + 1] = compose_tab[j]; 213 compose_tab[j + 1] = v; 214 } 215 compose_tab_inorder = 1; 216 } 217 218 for (j = 0, i = COMPOSE_SIZE; i != 0; i /= 2) { 219 if (compose_tab[j + i/2].elem[0] == compose_buf[0]) { 220 if (compose_tab[j + i/2].elem[1] == compose_buf[1]) 221 return(compose_tab[j + i/2].result); 222 r = compose_tab[j + i/2].elem[1] < compose_buf[1]; 223 } else 224 r = compose_tab[j + i/2].elem[0] < compose_buf[0]; 225 if (r) { 226 j += i/2 + 1; 227 i--; 228 } 229 } 230 231 return(KS_voidSymbol); 232 } 233 234 static const u_char latin1_to_upper[256] = { 235 /* 0 8 1 9 2 a 3 b 4 c 5 d 6 e 7 f */ 236 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0 */ 237 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0 */ 238 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1 */ 239 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1 */ 240 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 2 */ 241 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 2 */ 242 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 3 */ 243 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 3 */ 244 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 4 */ 245 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 4 */ 246 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 5 */ 247 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 5 */ 248 0x00, 'A', 'B', 'C', 'D', 'E', 'F', 'G', /* 6 */ 249 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', /* 6 */ 250 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', /* 7 */ 251 'X', 'Y', 'Z', 0x00, 0x00, 0x00, 0x00, 0x00, /* 7 */ 252 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8 */ 253 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8 */ 254 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 9 */ 255 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 9 */ 256 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* a */ 257 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* a */ 258 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b */ 259 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b */ 260 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c */ 261 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c */ 262 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* d */ 263 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* d */ 264 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* e */ 265 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* e */ 266 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0x00, /* f */ 267 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0x00, /* f */ 268 }; 269 270 static keysym_t 271 ksym_upcase(keysym_t ksym) 272 { 273 if (ksym >= KS_f1 && ksym <= KS_f20) 274 return(KS_F1 - KS_f1 + ksym); 275 276 if (KS_GROUP(ksym) == KS_GROUP_Ascii && ksym <= 0xff && 277 latin1_to_upper[ksym] != 0x00) 278 return(latin1_to_upper[ksym]); 279 280 return(ksym); 281 } 282 283 static void 284 fillmapentry(const keysym_t *kp, int len, struct wscons_keymap *mapentry) 285 { 286 switch (len) { 287 case 0: 288 mapentry->group1[0] = KS_voidSymbol; 289 mapentry->group1[1] = KS_voidSymbol; 290 mapentry->group2[0] = KS_voidSymbol; 291 mapentry->group2[1] = KS_voidSymbol; 292 break; 293 294 case 1: 295 mapentry->group1[0] = kp[0]; 296 mapentry->group1[1] = ksym_upcase(kp[0]); 297 mapentry->group2[0] = mapentry->group1[0]; 298 mapentry->group2[1] = mapentry->group1[1]; 299 break; 300 301 case 2: 302 mapentry->group1[0] = kp[0]; 303 mapentry->group1[1] = kp[1]; 304 mapentry->group2[0] = mapentry->group1[0]; 305 mapentry->group2[1] = mapentry->group1[1]; 306 break; 307 308 case 3: 309 mapentry->group1[0] = kp[0]; 310 mapentry->group1[1] = kp[1]; 311 mapentry->group2[0] = kp[2]; 312 mapentry->group2[1] = ksym_upcase(kp[2]); 313 break; 314 315 case 4: 316 mapentry->group1[0] = kp[0]; 317 mapentry->group1[1] = kp[1]; 318 mapentry->group2[0] = kp[2]; 319 mapentry->group2[1] = kp[3]; 320 break; 321 322 } 323 } 324 325 void 326 wskbd_get_mapentry(const struct wskbd_mapdata *mapdata, int kc, 327 struct wscons_keymap *mapentry) 328 { 329 kbd_t cur; 330 const keysym_t *kp; 331 const struct wscons_keydesc *mp; 332 int l; 333 334 mapentry->command = KS_voidSymbol; 335 mapentry->group1[0] = KS_voidSymbol; 336 mapentry->group1[1] = KS_voidSymbol; 337 mapentry->group2[0] = KS_voidSymbol; 338 mapentry->group2[1] = KS_voidSymbol; 339 340 for (cur = mapdata->layout & ~KB_HANDLEDBYWSKBD; cur != 0; ) { 341 mp = mapdata->keydesc; 342 while (mp->map_size > 0) { 343 if (mp->name == cur) 344 break; 345 mp++; 346 } 347 348 /* If map not found, return */ 349 if (mp->map_size <= 0) 350 return; 351 352 for (kp = mp->map; kp < mp->map + mp->map_size; kp++) 353 if (KS_GROUP(*kp) == KS_GROUP_Keycode && 354 KS_VALUE(*kp) == kc) { 355 /* First skip keycode and possible command */ 356 kp++; 357 if (KS_GROUP(*kp) == KS_GROUP_Command || 358 *kp == KS_Cmd || *kp == KS_Cmd1 || *kp == KS_Cmd2) 359 mapentry->command = *kp++; 360 361 for (l = 0; kp + l < mp->map + mp->map_size; l++) 362 if (KS_GROUP(kp[l]) == KS_GROUP_Keycode) 363 break; 364 if (l > 4) 365 panic("wskbd_get_mapentry: %d(%d): bad entry", 366 mp->name, *kp); 367 fillmapentry(kp, l, mapentry); 368 return; 369 } 370 371 cur = mp->base; 372 } 373 } 374 375 void 376 wskbd_init_keymap(int newlen, struct wscons_keymap **map, int *maplen) 377 { 378 int i; 379 380 if (newlen != *maplen) { 381 if (*maplen > 0) 382 free(*map, M_TEMP); 383 *maplen = newlen; 384 *map = malloc(newlen*sizeof(struct wscons_keymap), 385 M_TEMP, M_WAITOK); 386 } 387 388 for (i = 0; i < *maplen; i++) { 389 (*map)[i].command = KS_voidSymbol; 390 (*map)[i].group1[0] = KS_voidSymbol; 391 (*map)[i].group1[1] = KS_voidSymbol; 392 (*map)[i].group2[0] = KS_voidSymbol; 393 (*map)[i].group2[1] = KS_voidSymbol; 394 } 395 } 396 397 int 398 wskbd_load_keymap(const struct wskbd_mapdata *mapdata, 399 struct wscons_keymap **map, int *maplen) 400 { 401 int i, s, kc, stack_ptr; 402 const keysym_t *kp; 403 const struct wscons_keydesc *mp, *stack[10]; 404 kbd_t cur; 405 406 for (cur = mapdata->layout & ~KB_HANDLEDBYWSKBD, stack_ptr = 0; 407 cur != 0; stack_ptr++) { 408 mp = mapdata->keydesc; 409 while (mp->map_size > 0) { 410 if (cur == 0 || mp->name == cur) { 411 break; 412 } 413 mp++; 414 } 415 416 if (stack_ptr == sizeof(stack)/sizeof(stack[0])) 417 panic("wskbd_load_keymap: %d: recursion too deep", 418 mapdata->layout); 419 if (mp->map_size <= 0) 420 return(EINVAL); 421 422 stack[stack_ptr] = mp; 423 cur = mp->base; 424 } 425 426 for (i = 0, s = stack_ptr - 1; s >= 0; s--) { 427 mp = stack[s]; 428 for (kp = mp->map; kp < mp->map + mp->map_size; kp++) 429 if (KS_GROUP(*kp) == KS_GROUP_Keycode && KS_VALUE(*kp) > i) 430 i = KS_VALUE(*kp); 431 } 432 433 wskbd_init_keymap(i + 1, map, maplen); 434 435 for (s = stack_ptr - 1; s >= 0; s--) { 436 mp = stack[s]; 437 for (kp = mp->map; kp < mp->map + mp->map_size; ) { 438 if (KS_GROUP(*kp) != KS_GROUP_Keycode) 439 panic("wskbd_load_keymap: %d(%d): bad entry", 440 mp->name, *kp); 441 442 kc = KS_VALUE(*kp); 443 kp++; 444 445 if (KS_GROUP(*kp) == KS_GROUP_Command || 446 *kp == KS_Cmd || *kp == KS_Cmd1 || *kp == KS_Cmd2) { 447 (*map)[kc].command = *kp; 448 kp++; 449 } 450 451 for (i = 0; kp + i < mp->map + mp->map_size; i++) 452 if (KS_GROUP(kp[i]) == KS_GROUP_Keycode) 453 break; 454 455 if (i > 4) 456 panic("wskbd_load_keymap: %d(%d): bad entry", 457 mp->name, *kp); 458 459 fillmapentry(kp, i, &(*map)[kc]); 460 kp += i; 461 } 462 } 463 464 return(0); 465 } 466