src/libkeymap/ksyms.c

   1 #include <linux/keyboard.h>
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <stdlib.h>
   5 #include "ksyms.h"
   6 #include "nls.h"
   7
   8 #include "keymap.h"
   9
  10 #include "syms.cp1250.h"
  11 #include "syms.ethiopic.h"
  12 #include "syms.iso8859_15.h"
  13 #include "syms.iso8859_5.h"
  14 #include "syms.iso8859_7.h"
  15 #include "syms.iso8859_8.h"
  16 #include "syms.iso8859_9.h"
  17 #include "syms.koi8.h"
  18 #include "syms.latin1.h"
  19 #include "syms.latin2.h"
  20 #include "syms.latin3.h"
  21 #include "syms.latin4.h"
  22 #include "syms.mazovia.h"
  23 #include "syms.sami.h"
  24 #include "syms.thai.h"
  25
  26 #include "syms.synonyms.h"
  27
  28 #include "syms.ktyp.h"
  29
  30 #define E(x) { x, sizeof(x) / sizeof(x[0]) }
  31
  32 syms_entry
  33 const syms[] = {
  34         E(iso646_syms),         /* KT_LATIN */
  35         E(fn_syms),             /* KT_FN */
  36         E(spec_syms),           /* KT_SPEC */
  37         E(pad_syms),            /* KT_PAD */
  38         E(dead_syms),           /* KT_DEAD */
  39         E(cons_syms),           /* KT_CONS */
  40         E(cur_syms),            /* KT_CUR */
  41         E(shift_syms),          /* KT_SHIFT */
  42         { 0, 0 },               /* KT_META */
  43         E(ascii_syms),          /* KT_ASCII */
  44         E(lock_syms),           /* KT_LOCK */
  45         { 0, 0 },               /* KT_LETTER */
  46         E(sticky_syms),         /* KT_SLOCK */
  47         { 0, 0 },               /*  */
  48         E(brl_syms)             /* KT_BRL */
  49 };
  50
  51 #undef E
  52
  53 const unsigned int syms_size = sizeof(syms) / sizeof(syms_entry);
  54 const unsigned int syn_size = sizeof(synonyms) / sizeof(synonyms[0]);
  55
  56 struct cs {
  57         const char *charset;
  58         sym *charnames;
  59         int start;
  60 } charsets[] = {
  61         { "",             NULL,                0 },
  62         { "iso-8859-1",   latin1_syms,       160 },
  63         { "iso-8859-2",   latin2_syms,       160 },
  64         { "iso-8859-3",   latin3_syms,       160 },
  65         { "iso-8859-4",   latin4_syms,       160 },
  66         { "iso-8859-5",   iso_8859_5_syms,   160 },
  67         { "iso-8859-7",   iso_8859_7_syms,   160 },
  68         { "iso-8859-8",   iso_8859_8_syms,   160 },
  69         { "iso-8859-9",   iso_8859_9_syms,   208 },
  70         { "iso-8859-10",  latin6_syms,       160 },
  71         { "iso-8859-15",  iso_8859_15_syms,  160 },
  72         { "mazovia",      mazovia_syms,      128 },
  73         { "cp-1250",      cp1250_syms,       128 },
  74         { "koi8-r",       koi8_syms,         128 },
  75         { "koi8-u",       koi8_syms,         128 },
  76         { "tis-620",      tis_620_syms,      160 }, /* thai */
  77         { "iso-10646-18", iso_10646_18_syms, 159 }, /* ethiopic */
  78         { "iso-ir-197",   iso_ir_197_syms,   160 }, /* sami */
  79         { "iso-ir-209",   iso_ir_209_syms,   160 }, /* sami */
  80 };
  81
  82 static unsigned int charsets_size = sizeof(charsets) / sizeof(charsets[0]);
  83 static unsigned int kmap_charset = 0;
  84
  85 /* Functions for both dumpkeys and loadkeys. */
  86
  87 void
  88 list_charsets(FILE *f) {
  89         int lth,ct;
  90         unsigned int i, j;
  91         char *mm[] = { "iso-8859-", "koi8-" };
  92
  93         for (j=0; j<sizeof(mm)/sizeof(mm[0]); j++) {
  94                 if(j)
  95                         fprintf(f, ",");
  96                 fprintf(f, "%s{", mm[j]);
  97                 ct = 0;
  98                 lth = strlen(mm[j]);
  99                 for(i=1; i < charsets_size; i++) {
 100                         if(!strncmp(charsets[i].charset, mm[j], lth)) {
 101                                 if(ct++)
 102                                         fprintf(f, ",");
 103                                 fprintf(f, "%s", charsets[i].charset+lth);
 104                         }
 105                 }
 106                 fprintf(f, "}");
 107         }
 108         for(i=1; i < charsets_size; i++) {
 109                 for (j=0; j<sizeof(mm)/sizeof(mm[0]); j++) {
 110                         lth = strlen(mm[j]);
 111                         if(!strncmp(charsets[i].charset, mm[j], lth))
 112                                 goto nxti;
 113                 }
 114                 fprintf(f, ",%s", charsets[i].charset);
 115         nxti:;
 116         }
 117         fprintf(f, "\n");
 118 }
 119
 120 int
 121 set_charset(const char *charset) {
 122         unsigned int i;
 123
 124         for (i = 1; i < charsets_size; i++) {
 125                 if (!strcasecmp(charsets[i].charset, charset)) {
 126                         kmap_charset = i;
 127                         return 0;
 128                 }
 129         }
 130         return 1;
 131 }
 132
 133 const char *
 134 codetoksym(int code) {
 135         unsigned int i;
 136         int j;
 137         sym *p;
 138
 139         if (code < 0)
 140                 return NULL;
 141
 142         if (code < 0x1000) {    /* "traditional" keysym */
 143                 if (code < 0x80)
 144                         return iso646_syms[code];
 145
 146                 if (KTYP(code) == KT_META)
 147                         return NULL;
 148
 149                 if (KTYP(code) == KT_LETTER)
 150                         code = K(KT_LATIN, KVAL(code));
 151
 152                 if (KTYP(code) > KT_LATIN)
 153                         return syms[KTYP(code)].table[KVAL(code)];
 154
 155                 i = kmap_charset;
 156                 while (1) {
 157                         p = charsets[i].charnames;
 158                         if (p) {
 159                                 p += KVAL(code) - charsets[i].start;
 160
 161                                 if (p->name[0])
 162                                         return p->name;
 163                         }
 164
 165                         i++;
 166
 167                         if (i == charsets_size)
 168                                 i = 0;
 169                         if (i == kmap_charset)
 170                                 break;
 171                 }
 172         }
 173
 174         else {                  /* Unicode keysym */
 175                 code ^= 0xf000;
 176
 177                 if (code < 0x80)
 178                         return iso646_syms[code];
 179
 180                 i = kmap_charset;
 181                 while (1) {
 182                         p = charsets[i].charnames;
 183                         if (p) {
 184                                 for (j = charsets[i].start; j < 256; j++, p++) {
 185                                         if (p->uni == code && p->name[0])
 186                                                 return p->name;
 187                                 }
 188                         }
 189
 190                         i++;
 191
 192                         if (i == charsets_size)
 193                                 i = 0;
 194                         if (i == kmap_charset)
 195                                 break;
 196                 }
 197
 198         }
 199
 200         return NULL;
 201 }
 202
 203 /* Functions for loadkeys. */
 204
 205 static int
 206 kt_latin(struct keymap *kmap, const char *s, int direction) {
 207         int i, max;
 208
 209         if (kmap_charset) {
 210                 sym *p = charsets[kmap_charset].charnames;
 211
 212                 for (i = charsets[kmap_charset].start; i < 256; i++, p++) {
 213                         if(p->name[0] && !strcmp(s, p->name))
 214                                 return K(KT_LATIN, i);
 215                 }
 216         }
 217
 218         max = (direction == TO_UNICODE ? 128 : syms[KT_LATIN].size);
 219
 220         for (i = 0; i < max; i++) {
 221                 if (!strcmp(s, syms[KT_LATIN].table[i]))
 222                         return K(KT_LATIN, i);
 223         }
 224
 225         return -1;
 226 }
 227
 228 int
 229 ksymtocode(struct keymap *kmap, const char *s, int direction) {
 230         unsigned int i;
 231         int n, j;
 232         int keycode;
 233         sym *p;
 234
 235         if (direction == TO_AUTO)
 236                 direction = kmap->prefer_unicode ? TO_UNICODE : TO_8BIT;
 237
 238         if (!strncmp(s, "Meta_", 5)) {
 239                 keycode = ksymtocode(kmap, s+5, TO_8BIT);
 240                 if (KTYP(keycode) == KT_LATIN)
 241                         return K(KT_META, KVAL(keycode));
 242
 243                 /* Avoid error messages for Meta_acute with UTF-8 */
 244                 else if(direction == TO_UNICODE)
 245                         return (0);
 246
 247                 /* fall through to error printf */
 248         }
 249
 250         if ((n = kt_latin(kmap, s, direction)) >= 0) {
 251                 return n;
 252         }
 253
 254         for (i = 1; i < syms_size; i++) {
 255                 for (j = 0; j < syms[i].size; j++) {
 256                         if (!strcmp(s,syms[i].table[j]))
 257                                 return K(i, j);
 258                 }
 259         }
 260
 261         for (i = 0; i < syn_size; i++)
 262                 if (!strcmp(s, synonyms[i].synonym))
 263                         return ksymtocode(kmap, synonyms[i].official_name, direction);
 264
 265         if (direction == TO_UNICODE) {
 266                 i = kmap_charset;
 267
 268                 while (1) {
 269                         p = charsets[i].charnames;
 270                         if (p) {
 271                                 for (j = charsets[i].start; j < 256; j++, p++) {
 272                                         if (!strcmp(s,p->name))
 273                                                 return (p->uni ^ 0xf000);
 274                                 }
 275                         }
 276
 277                         i++;
 278
 279                         if (i == charsets_size)
 280                                 i = 0;
 281                         if (i == kmap_charset)
 282                                 break;
 283                 }
 284         } else /* if (!chosen_charset[0]) */ {
 285                 /* note: some keymaps use latin1 but with euro,
 286                    so set_charset() would fail */
 287                 /* note: some keymaps with charset line still use
 288                    symbols from more than one character set,
 289                    so we cannot have the  `if (!chosen_charset[0])'  here */
 290
 291                 for (i = 0; i < 256 - 160; i++)
 292                         if (!strcmp(s, latin1_syms[i].name)) {
 293                                 log_verbose(kmap, LOG_VERBOSE1,
 294                                         _("assuming iso-8859-1 %s\n"), s);
 295                                 return K(KT_LATIN, 160 + i);
 296                         }
 297
 298                 for (i = 0; i < 256 - 160; i++)
 299                         if (!strcmp(s, iso_8859_15_syms[i].name)) {
 300                                 log_verbose(kmap, LOG_VERBOSE1,
 301                                         _("assuming iso-8859-15 %s\n"), s);
 302                                 return K(KT_LATIN, 160 + i);
 303                         }
 304
 305                 for (i = 0; i < 256 - 160; i++)
 306                         if (!strcmp(s, latin2_syms[i].name)) {
 307                                 log_verbose(kmap, LOG_VERBOSE1,
 308                                         _("assuming iso-8859-2 %s\n"), s);
 309                                 return K(KT_LATIN, 160 + i);
 310                         }
 311
 312                 for (i = 0; i < 256 - 160; i++)
 313                         if (!strcmp(s, latin3_syms[i].name)) {
 314                                 log_verbose(kmap, LOG_VERBOSE1,
 315                                         _("assuming iso-8859-3 %s\n"), s);
 316                                 return K(KT_LATIN, 160 + i);
 317                         }
 318
 319                 for (i = 0; i < 256 - 160; i++)
 320                         if (!strcmp(s, latin4_syms[i].name)) {
 321                                 log_verbose(kmap, LOG_VERBOSE1,
 322                                         _("assuming iso-8859-4 %s\n"), s);
 323                                 return K(KT_LATIN, 160 + i);
 324                         }
 325         }
 326
 327         log_error(kmap, _("unknown keysym '%s'\n"), s);
 328
 329         return CODE_FOR_UNKNOWN_KSYM;
 330 }
 331
 332 int
 333 convert_code(struct keymap *kmap, int code, int direction)
 334 {
 335         const char *ksym;
 336         int unicode_forced = (direction == TO_UNICODE);
 337         int input_is_unicode = (code >= 0x1000);
 338         int result;
 339
 340         if (direction == TO_AUTO)
 341                 direction = kmap->prefer_unicode ? TO_UNICODE : TO_8BIT;
 342
 343         if (KTYP(code) == KT_META)
 344                 return code;
 345         else if (!input_is_unicode && code < 0x80)
 346                 /* basic ASCII is fine in every situation */
 347                 return code;
 348         else if (input_is_unicode && (code ^ 0xf000) < 0x80)
 349                 /* so is Unicode "Basic Latin" */
 350                 return code ^ 0xf000;
 351         else if ((input_is_unicode && direction == TO_UNICODE) ||
 352                  (!input_is_unicode && direction == TO_8BIT))
 353                 /* no conversion necessary */
 354                 result = code;
 355         else {
 356                 /* depending on direction, this will give us either an 8-bit
 357                  * K(KTYP, KVAL) or a Unicode keysym xor 0xf000 */
 358                 ksym = codetoksym(code);
 359                 if (ksym)
 360                         result = ksymtocode(kmap, ksym, direction);
 361                 else
 362                         result = code;
 363         }
 364
 365         /* if direction was TO_UNICODE from the beginning, we return the true
 366          * Unicode value (without the 0xf000 mask) */
 367         if (unicode_forced && result >= 0x1000)
 368                 return result ^ 0xf000;
 369         else
 370                 return result;
 371 }
 372
 373 int
 374 add_capslock(struct keymap *kmap, int code)
 375 {
 376         if (KTYP(code) == KT_LATIN && (!(kmap->prefer_unicode) || code < 0x80))
 377                 return K(KT_LETTER, KVAL(code));
 378         else if ((code ^ 0xf000) < 0x100)
 379                 /* Unicode Latin-1 Supplement */
 380                 /* a bit dirty to use KT_LETTER here, but it should work */
 381                 return K(KT_LETTER, code ^ 0xf000);
 382         else
 383                 return convert_code(kmap, code, TO_AUTO);
 384 }