1 /* 2 * Copyright (C) 1984-2005 Mark Nudelman 3 * 4 * You may distribute under the terms of either the GNU General Public 5 * License or the Less License, as specified in the README file. 6 * 7 * For more information about less, or for information on how to 8 * contact the author, see the README file. 9 */ 10 11 12 /* 13 * Functions to define the character set 14 * and do things specific to the character set. 15 */ 16 17 #include "less.h" 18 #if HAVE_LOCALE 19 #include <locale.h> 20 #include <ctype.h> 21 #include <langinfo.h> 22 #endif 23 24 #include "charset.h" 25 26 public int utf_mode = 0; 27 28 /* 29 * Predefined character sets, 30 * selected by the LESSCHARSET environment variable. 31 */ 32 struct charset { 33 char *name; 34 int *p_flag; 35 char *desc; 36 } charsets[] = { 37 { "ascii", NULL, "8bcccbcc18b95.b" }, 38 { "utf-8", &utf_mode, "8bcccbcc18b95.b126.bb" }, 39 { "iso8859", NULL, "8bcccbcc18b95.33b." }, 40 { "latin3", NULL, "8bcccbcc18b95.33b5.b8.b15.b4.b12.b18.b12.b." }, 41 { "arabic", NULL, "8bcccbcc18b95.33b.3b.7b2.13b.3b.b26.5b19.b" }, 42 { "greek", NULL, "8bcccbcc18b95.33b4.2b4.b3.b35.b44.b" }, 43 { "greek2005", NULL, "8bcccbcc18b95.33b14.b35.b44.b" }, 44 { "hebrew", NULL, "8bcccbcc18b95.33b.b29.32b28.2b2.b" }, 45 { "koi8-r", NULL, "8bcccbcc18b95.b." }, 46 { "KOI8-T", NULL, "8bcccbcc18b95.b8.b6.b8.b.b.5b7.3b4.b4.b3.b.b.3b." }, 47 { "georgianps", NULL, "8bcccbcc18b95.3b11.4b12.2b." }, 48 { "tcvn", NULL, "b..b...bcccbccbbb7.8b95.b48.5b." }, 49 { "TIS-620", NULL, "8bcccbcc18b95.b.4b.11b7.8b." }, 50 { "next", NULL, "8bcccbcc18b95.bb125.bb" }, 51 { "dos", NULL, "8bcccbcc12bc5b95.b." }, 52 { "windows-1251", NULL, "8bcccbcc12bc5b95.b24.b." }, 53 { "windows-1252", NULL, "8bcccbcc12bc5b95.b.b11.b.2b12.b." }, 54 { "windows-1255", NULL, "8bcccbcc12bc5b95.b.b8.b.5b9.b.4b." }, 55 { "ebcdic", NULL, "5bc6bcc7bcc41b.9b7.9b5.b..8b6.10b6.b9.7b9.8b8.17b3.3b9.7b9.8b8.6b10.b.b.b." }, 56 { "IBM-1047", NULL, "4cbcbc3b9cbccbccbb4c6bcc5b3cbbc4bc4bccbc191.b" }, 57 { NULL, NULL, NULL } 58 }; 59 60 /* 61 * Support "locale charmap"/nl_langinfo(CODESET) values, as well as others. 62 */ 63 struct cs_alias { 64 char *name; 65 char *oname; 66 } cs_aliases[] = { 67 { "UTF-8", "utf-8" }, 68 { "ANSI_X3.4-1968", "ascii" }, 69 { "US-ASCII", "ascii" }, 70 { "latin1", "iso8859" }, 71 { "ISO-8859-1", "iso8859" }, 72 { "latin9", "iso8859" }, 73 { "ISO-8859-15", "iso8859" }, 74 { "latin2", "iso8859" }, 75 { "ISO-8859-2", "iso8859" }, 76 { "ISO-8859-3", "latin3" }, 77 { "latin4", "iso8859" }, 78 { "ISO-8859-4", "iso8859" }, 79 { "cyrillic", "iso8859" }, 80 { "ISO-8859-5", "iso8859" }, 81 { "ISO-8859-6", "arabic" }, 82 { "ISO-8859-7", "greek" }, 83 { "IBM9005", "greek2005" }, 84 { "ISO-8859-8", "hebrew" }, 85 { "latin5", "iso8859" }, 86 { "ISO-8859-9", "iso8859" }, 87 { "latin6", "iso8859" }, 88 { "ISO-8859-10", "iso8859" }, 89 { "latin7", "iso8859" }, 90 { "ISO-8859-13", "iso8859" }, 91 { "latin8", "iso8859" }, 92 { "ISO-8859-14", "iso8859" }, 93 { "latin10", "iso8859" }, 94 { "ISO-8859-16", "iso8859" }, 95 { "IBM437", "dos" }, 96 { "EBCDIC-US", "ebcdic" }, 97 { "IBM1047", "IBM-1047" }, 98 { "KOI8-R", "koi8-r" }, 99 { "KOI8-U", "koi8-r" }, 100 { "GEORGIAN-PS", "georgianps" }, 101 { "TCVN5712-1", "tcvn" }, 102 { "NEXTSTEP", "next" }, 103 { "windows", "windows-1252" }, /* backward compatibility */ 104 { "CP1251", "windows-1251" }, 105 { "CP1252", "windows-1252" }, 106 { "CP1255", "windows-1255" }, 107 { NULL, NULL } 108 }; 109 110 #define IS_BINARY_CHAR 01 111 #define IS_CONTROL_CHAR 02 112 113 static char chardef[256]; 114 static char *binfmt = NULL; 115 static char *utfbinfmt = NULL; 116 public int binattr = AT_STANDOUT; 117 118 119 /* 120 * Define a charset, given a description string. 121 * The string consists of 256 letters, 122 * one for each character in the charset. 123 * If the string is shorter than 256 letters, missing letters 124 * are taken to be identical to the last one. 125 * A decimal number followed by a letter is taken to be a 126 * repetition of the letter. 127 * 128 * Each letter is one of: 129 * . normal character 130 * b binary character 131 * c control character 132 */ 133 static void 134 ichardef(s) 135 char *s; 136 { 137 register char *cp; 138 register int n; 139 register char v; 140 141 n = 0; 142 v = 0; 143 cp = chardef; 144 while (*s != '\0') 145 { 146 switch (*s++) 147 { 148 case '.': 149 v = 0; 150 break; 151 case 'c': 152 v = IS_CONTROL_CHAR; 153 break; 154 case 'b': 155 v = IS_BINARY_CHAR|IS_CONTROL_CHAR; 156 break; 157 158 case '0': case '1': case '2': case '3': case '4': 159 case '5': case '6': case '7': case '8': case '9': 160 n = (10 * n) + (s[-1] - '0'); 161 continue; 162 163 default: 164 error("invalid chardef", NULL_PARG); 165 quit(QUIT_ERROR); 166 /*NOTREACHED*/ 167 } 168 169 do 170 { 171 if (cp >= chardef + sizeof(chardef)) 172 { 173 error("chardef longer than 256", NULL_PARG); 174 quit(QUIT_ERROR); 175 /*NOTREACHED*/ 176 } 177 *cp++ = v; 178 } while (--n > 0); 179 n = 0; 180 } 181 182 while (cp < chardef + sizeof(chardef)) 183 *cp++ = v; 184 } 185 186 /* 187 * Define a charset, given a charset name. 188 * The valid charset names are listed in the "charsets" array. 189 */ 190 static int 191 icharset(name, no_error) 192 register char *name; 193 int no_error; 194 { 195 register struct charset *p; 196 register struct cs_alias *a; 197 198 if (name == NULL || *name == '\0') 199 return (0); 200 201 /* First see if the name is an alias. */ 202 for (a = cs_aliases; a->name != NULL; a++) 203 { 204 if (strcmp(name, a->name) == 0) 205 { 206 name = a->oname; 207 break; 208 } 209 } 210 211 for (p = charsets; p->name != NULL; p++) 212 { 213 if (strcmp(name, p->name) == 0) 214 { 215 ichardef(p->desc); 216 if (p->p_flag != NULL) 217 *(p->p_flag) = 1; 218 return (1); 219 } 220 } 221 222 if (!no_error) { 223 error("invalid charset name", NULL_PARG); 224 quit(QUIT_ERROR); 225 } 226 return (0); 227 } 228 229 #if HAVE_LOCALE 230 /* 231 * Define a charset, given a locale name. 232 */ 233 static void 234 ilocale() 235 { 236 register int c; 237 238 for (c = 0; c < (int) sizeof(chardef); c++) 239 { 240 if (isprint(c)) 241 chardef[c] = 0; 242 else if (iscntrl(c)) 243 chardef[c] = IS_CONTROL_CHAR; 244 else 245 chardef[c] = IS_BINARY_CHAR|IS_CONTROL_CHAR; 246 } 247 } 248 #endif 249 250 /* 251 * Define the printing format for control (or binary utf) chars. 252 */ 253 static void 254 setbinfmt(s, fmtvarptr, default_fmt) 255 char *s; 256 char **fmtvarptr; 257 char *default_fmt; 258 { 259 if (s && utf_mode) 260 { 261 /* It would be too hard to account for width otherwise. */ 262 char *t = s; 263 while (*t) 264 { 265 if (*t < ' ' || *t > '~') 266 { 267 s = default_fmt; 268 goto attr; 269 } 270 t++; 271 } 272 } 273 274 /* %n is evil */ 275 if (s == NULL || *s == '\0' || 276 (*s == '*' && (s[1] == '\0' || s[2] == '\0' || strchr(s + 2, 'n'))) || 277 (*s != '*' && strchr(s, 'n'))) 278 s = default_fmt; 279 280 /* 281 * Select the attributes if it starts with "*". 282 */ 283 attr: 284 if (*s == '*') 285 { 286 switch (s[1]) 287 { 288 case 'd': binattr = AT_BOLD; break; 289 case 'k': binattr = AT_BLINK; break; 290 case 's': binattr = AT_STANDOUT; break; 291 case 'u': binattr = AT_UNDERLINE; break; 292 default: binattr = AT_NORMAL; break; 293 } 294 s += 2; 295 } 296 *fmtvarptr = s; 297 } 298 299 /* 300 * 301 */ 302 static void 303 set_charset() 304 { 305 char *s; 306 307 /* 308 * See if environment variable LESSCHARSET is defined. 309 */ 310 s = lgetenv("LESSCHARSET"); 311 if (icharset(s, 0)) 312 return; 313 314 /* 315 * LESSCHARSET is not defined: try LESSCHARDEF. 316 */ 317 s = lgetenv("LESSCHARDEF"); 318 if (s != NULL && *s != '\0') 319 { 320 ichardef(s); 321 return; 322 } 323 324 #if HAVE_LOCALE 325 /* 326 * Try using the codeset name as the charset name. 327 */ 328 s = nl_langinfo(CODESET); 329 if (icharset(s, 1)) 330 return; 331 #endif 332 333 #if HAVE_STRSTR 334 /* 335 * Check whether LC_ALL, LC_CTYPE or LANG look like UTF-8 is used. 336 */ 337 if ((s = lgetenv("LC_ALL")) != NULL || 338 (s = lgetenv("LC_CTYPE")) != NULL || 339 (s = lgetenv("LANG")) != NULL) 340 { 341 if ( strstr(s, "UTF-8") != NULL || strstr(s, "utf-8") != NULL 342 || strstr(s, "UTF8") != NULL || strstr(s, "utf8") != NULL) 343 if (icharset("utf-8", 1)) 344 return; 345 } 346 #endif 347 348 #if HAVE_LOCALE 349 /* 350 * Get character definitions from locale functions, 351 * rather than from predefined charset entry. 352 */ 353 ilocale(); 354 #if MSDOS_COMPILER 355 /* 356 * Default to "dos". 357 */ 358 (void) icharset("dos", 1); 359 #else 360 /* 361 * Default to "latin1". 362 */ 363 (void) icharset("latin1", 1); 364 #endif 365 #endif 366 } 367 368 /* 369 * Initialize charset data structures. 370 */ 371 public void 372 init_charset() 373 { 374 char *s; 375 376 #if HAVE_LOCALE 377 setlocale(LC_ALL, ""); 378 #endif 379 380 set_charset(); 381 382 s = lgetenv("LESSBINFMT"); 383 setbinfmt(s, &binfmt, "*s<%02X>"); 384 385 s = lgetenv("LESSUTFBINFMT"); 386 setbinfmt(s, &utfbinfmt, "<U+%04lX>"); 387 } 388 389 /* 390 * Is a given character a "binary" character? 391 */ 392 public int 393 binary_char(c) 394 unsigned char c; 395 { 396 c &= 0377; 397 return (chardef[c] & IS_BINARY_CHAR); 398 } 399 400 /* 401 * Is a given character a "control" character? 402 */ 403 public int 404 control_char(c) 405 int c; 406 { 407 c &= 0377; 408 return (chardef[c] & IS_CONTROL_CHAR); 409 } 410 411 /* 412 * Return the printable form of a character. 413 * For example, in the "ascii" charset '\3' is printed as "^C". 414 */ 415 public char * 416 prchar(c) 417 int c; 418 { 419 /* {{ This buffer can be overrun if LESSBINFMT is a long string. }} */ 420 static char buf[32]; 421 422 c &= 0377; 423 if ((c < 128 || !utf_mode) && !control_char(c)) 424 SNPRINTF1(buf, sizeof(buf), "%c", c); 425 else if (c == ESC) 426 strcpy(buf, "ESC"); 427 #if IS_EBCDIC_HOST 428 else if (!binary_char(c) && c < 64) 429 SNPRINTF1(buf, sizeof(buf), "^%c", 430 /* 431 * This array roughly inverts CONTROL() #defined in less.h, 432 * and should be kept in sync with CONTROL() and IBM-1047. 433 */ 434 "@ABC.I.?...KLMNO" 435 "PQRS.JH.XY.." 436 "\\]^_" 437 "......W[.....EFG" 438 "..V....D....TU.Z"[c]); 439 #else 440 else if (c < 128 && !control_char(c ^ 0100)) 441 SNPRINTF1(buf, sizeof(buf), "^%c", c ^ 0100); 442 #endif 443 else 444 SNPRINTF1(buf, sizeof(buf), binfmt, c); 445 return (buf); 446 } 447 448 /* 449 * Return the printable form of a UTF-8 character. 450 */ 451 public char * 452 prutfchar(ch) 453 LWCHAR ch; 454 { 455 static char buf[32]; 456 457 if (ch == ESC) 458 strcpy(buf, "ESC"); 459 else if (ch < 128 && control_char(ch)) 460 { 461 if (!control_char(ch ^ 0100)) 462 SNPRINTF1(buf, sizeof(buf), "^%c", ((char) ch) ^ 0100); 463 else 464 SNPRINTF1(buf, sizeof(buf), binfmt, (char) ch); 465 } else if (is_ubin_char(ch)) 466 SNPRINTF1(buf, sizeof(buf), utfbinfmt, ch); 467 else 468 { 469 int len; 470 if (ch >= 0x80000000) 471 { 472 len = 3; 473 ch = 0xFFFD; 474 } else 475 { 476 len = (ch < 0x80) ? 1 477 : (ch < 0x800) ? 2 478 : (ch < 0x10000) ? 3 479 : (ch < 0x200000) ? 4 480 : (ch < 0x4000000) ? 5 481 : 6; 482 } 483 buf[len] = '\0'; 484 if (len == 1) 485 *buf = (char) ch; 486 else 487 { 488 *buf = ((1 << len) - 1) << (8 - len); 489 while (--len > 0) 490 { 491 buf[len] = (char) (0x80 | (ch & 0x3F)); 492 ch >>= 6; 493 } 494 *buf |= ch; 495 } 496 } 497 return (buf); 498 } 499 500 /* 501 * Get the length of a UTF-8 character in bytes. 502 */ 503 public int 504 utf_len(ch) 505 char ch; 506 { 507 if ((ch & 0x80) == 0) 508 return 1; 509 if ((ch & 0xE0) == 0xC0) 510 return 2; 511 if ((ch & 0xF0) == 0xE0) 512 return 3; 513 if ((ch & 0xF8) == 0xF0) 514 return 4; 515 if ((ch & 0xFC) == 0xF8) 516 return 5; 517 if ((ch & 0xFE) == 0xFC) 518 return 6; 519 /* Invalid UTF-8 encoding. */ 520 return 1; 521 } 522 523 /* 524 * Is a UTF-8 character well-formed? 525 */ 526 public int 527 is_utf8_well_formed(s) 528 unsigned char *s; 529 { 530 int i; 531 int len; 532 533 if (IS_UTF8_INVALID(s[0])) 534 return (0); 535 536 len = utf_len((char) s[0]); 537 if (len == 1) 538 return (1); 539 if (len == 2) 540 { 541 if (s[0] < 0xC2) 542 return (0); 543 } else 544 { 545 unsigned char mask; 546 mask = (~((1 << (8-len)) - 1)) & 0xFF; 547 if (s[0] == mask && (s[1] & mask) == 0x80) 548 return (0); 549 } 550 551 for (i = 1; i < len; i++) 552 if (!IS_UTF8_TRAIL(s[i])) 553 return (0); 554 return (1); 555 } 556 557 /* 558 * Get the value of a UTF-8 character. 559 */ 560 public LWCHAR 561 get_wchar(p) 562 char *p; 563 { 564 switch (utf_len(p[0])) 565 { 566 case 1: 567 default: 568 return (LWCHAR) 569 (p[0] & 0xFF); 570 case 2: 571 return (LWCHAR) ( 572 ((p[0] & 0x1F) << 6) | 573 (p[1] & 0x3F)); 574 case 3: 575 return (LWCHAR) ( 576 ((p[0] & 0x0F) << 12) | 577 ((p[1] & 0x3F) << 6) | 578 (p[2] & 0x3F)); 579 case 4: 580 return (LWCHAR) ( 581 ((p[0] & 0x07) << 18) | 582 ((p[1] & 0x3F) << 12) | 583 ((p[2] & 0x3F) << 6) | 584 (p[3] & 0x3F)); 585 case 5: 586 return (LWCHAR) ( 587 ((p[0] & 0x03) << 24) | 588 ((p[1] & 0x3F) << 18) | 589 ((p[2] & 0x3F) << 12) | 590 ((p[3] & 0x3F) << 6) | 591 (p[4] & 0x3F)); 592 case 6: 593 return (LWCHAR) ( 594 ((p[0] & 0x01) << 30) | 595 ((p[1] & 0x3F) << 24) | 596 ((p[2] & 0x3F) << 18) | 597 ((p[3] & 0x3F) << 12) | 598 ((p[4] & 0x3F) << 6) | 599 (p[5] & 0x3F)); 600 } 601 } 602 603 /* 604 * Step forward or backward one character in a string. 605 */ 606 public LWCHAR 607 step_char(pp, dir, limit) 608 char **pp; 609 signed int dir; 610 char *limit; 611 { 612 LWCHAR ch; 613 char *p = *pp; 614 615 if (!utf_mode) 616 { 617 /* It's easy if chars are one byte. */ 618 if (dir > 0) 619 ch = (LWCHAR) ((p < limit) ? *p++ : 0); 620 else 621 ch = (LWCHAR) ((p > limit) ? *--p : 0); 622 } else if (dir > 0) 623 { 624 if (p + utf_len(*p) > limit) 625 ch = 0; 626 else 627 { 628 ch = get_wchar(p); 629 p++; 630 while (IS_UTF8_TRAIL(*p)) 631 p++; 632 } 633 } else 634 { 635 while (p > limit && IS_UTF8_TRAIL(p[-1])) 636 p--; 637 if (p > limit) 638 ch = get_wchar(--p); 639 else 640 ch = 0; 641 } 642 *pp = p; 643 return ch; 644 } 645 646 /* 647 * Unicode characters data 648 */ 649 struct wchar_range { LWCHAR first, last; }; 650 651 static struct wchar_range comp_table[] = { 652 {0x300,0x357}, {0x35d,0x36f}, {0x483,0x486}, {0x488,0x489}, 653 {0x591,0x5a1}, {0x5a3,0x5b9}, {0x5bb,0x5bd}, {0x5bf,0x5bf}, 654 {0x5c1,0x5c2}, {0x5c4,0x5c4}, {0x610,0x615}, {0x64b,0x658}, 655 {0x670,0x670}, {0x6d6,0x6dc}, {0x6de,0x6e4}, {0x6e7,0x6e8}, 656 {0x6ea,0x6ed}, {0x711,0x711}, {0x730,0x74a}, {0x7a6,0x7b0}, 657 {0x901,0x902}, {0x93c,0x93c}, {0x941,0x948}, {0x94d,0x94d}, 658 {0x951,0x954}, {0x962,0x963}, {0x981,0x981}, {0x9bc,0x9bc}, 659 {0x9c1,0x9c4}, {0x9cd,0x9cd}, {0x9e2,0x9e3}, {0xa01,0xa02}, 660 {0xa3c,0xa3c}, {0xa41,0xa42}, {0xa47,0xa48}, {0xa4b,0xa4d}, 661 {0xa70,0xa71}, {0xa81,0xa82}, {0xabc,0xabc}, {0xac1,0xac5}, 662 {0xac7,0xac8}, {0xacd,0xacd}, {0xae2,0xae3}, {0xb01,0xb01}, 663 {0xb3c,0xb3c}, {0xb3f,0xb3f}, {0xb41,0xb43}, {0xb4d,0xb4d}, 664 {0xb56,0xb56}, {0xb82,0xb82}, {0xbc0,0xbc0}, {0xbcd,0xbcd}, 665 {0xc3e,0xc40}, {0xc46,0xc48}, {0xc4a,0xc4d}, {0xc55,0xc56}, 666 {0xcbc,0xcbc}, {0xcbf,0xcbf}, {0xcc6,0xcc6}, {0xccc,0xccd}, 667 {0xd41,0xd43}, {0xd4d,0xd4d}, {0xdca,0xdca}, {0xdd2,0xdd4}, 668 {0xdd6,0xdd6}, {0xe31,0xe31}, {0xe34,0xe3a}, {0xe47,0xe4e}, 669 {0xeb1,0xeb1}, {0xeb4,0xeb9}, {0xebb,0xebc}, {0xec8,0xecd}, 670 {0xf18,0xf19}, {0xf35,0xf35}, {0xf37,0xf37}, {0xf39,0xf39}, 671 {0xf71,0xf7e}, {0xf80,0xf84}, {0xf86,0xf87}, {0xf90,0xf97}, 672 {0xf99,0xfbc}, {0xfc6,0xfc6}, {0x102d,0x1030}, {0x1032,0x1032}, 673 {0x1036,0x1037}, {0x1039,0x1039}, {0x1058,0x1059}, 674 {0x1712,0x1714}, {0x1732,0x1734}, {0x1752,0x1753}, 675 {0x1772,0x1773}, {0x17b7,0x17bd}, {0x17c6,0x17c6}, 676 {0x17c9,0x17d3}, {0x17dd,0x17dd}, {0x180b,0x180d}, 677 {0x18a9,0x18a9}, {0x1920,0x1922}, {0x1927,0x1928}, 678 {0x1932,0x1932}, {0x1939,0x193b}, {0x20d0,0x20ea}, 679 {0x302a,0x302f}, {0x3099,0x309a}, {0xfb1e,0xfb1e}, 680 {0xfe00,0xfe0f}, {0xfe20,0xfe23}, {0x1d167,0x1d169}, 681 {0x1d17b,0x1d182}, {0x1d185,0x1d18b}, {0x1d1aa,0x1d1ad}, 682 {0xe0100,0xe01ef}, 683 }; 684 685 static struct wchar_range comb_table[] = { 686 {0x0644,0x0622}, {0x0644,0x0623}, {0x0644,0x0625}, {0x0644,0x0627}, 687 }; 688 689 /* 690 * Characters with general category values 691 * Cc: Other, Control 692 * Cf: Other, Format 693 * Cs: Other, Surrogate 694 * Co: Other, Private Use 695 * Cn: Other, Not Assigned 696 * Zl: Separator, Line 697 * Zp: Separator, Paragraph 698 */ 699 static struct wchar_range ubin_table[] = { 700 { 0x0000, 0x001f} /* Cc */, { 0x007f, 0x009f} /* Cc */, 701 #if 0 702 { 0x00ad, 0x00ad} /* Cf */, 703 #endif 704 { 0x0237, 0x024f} /* Cn */, { 0x0358, 0x035c} /* Cn */, 705 { 0x0370, 0x0373} /* Cn */, { 0x0376, 0x0379} /* Cn */, 706 { 0x037b, 0x037d} /* Cn */, { 0x037f, 0x0383} /* Cn */, 707 { 0x038b, 0x038b} /* Cn */, { 0x038d, 0x038d} /* Cn */, 708 { 0x03a2, 0x03a2} /* Cn */, { 0x03cf, 0x03cf} /* Cn */, 709 { 0x03fc, 0x03ff} /* Cn */, { 0x0487, 0x0487} /* Cn */, 710 { 0x04cf, 0x04cf} /* Cn */, { 0x04f6, 0x04f7} /* Cn */, 711 { 0x04fa, 0x04ff} /* Cn */, { 0x0510, 0x0530} /* Cn */, 712 { 0x0557, 0x0558} /* Cn */, { 0x0560, 0x0560} /* Cn */, 713 { 0x0588, 0x0588} /* Cn */, { 0x058b, 0x0590} /* Cn */, 714 { 0x05a2, 0x05a2} /* Cn */, { 0x05ba, 0x05ba} /* Cn */, 715 { 0x05c5, 0x05cf} /* Cn */, { 0x05eb, 0x05ef} /* Cn */, 716 { 0x05f5, 0x05ff} /* Cn */, 717 #if 0 718 { 0x0600, 0x0603} /* Cf */, 719 #endif 720 { 0x0604, 0x060b} /* Cn */, { 0x0616, 0x061a} /* Cn */, 721 { 0x061c, 0x061e} /* Cn */, { 0x0620, 0x0620} /* Cn */, 722 { 0x063b, 0x063f} /* Cn */, { 0x0659, 0x065f} /* Cn */, 723 #if 0 724 { 0x06dd, 0x06dd} /* Cf */, 725 #endif 726 { 0x070e, 0x070e} /* Cn */, 727 #if 0 728 { 0x070f, 0x070f} /* Cf */, 729 #endif 730 { 0x074b, 0x074c} /* Cn */, { 0x0750, 0x077f} /* Cn */, 731 { 0x07b2, 0x0900} /* Cn */, { 0x093a, 0x093b} /* Cn */, 732 { 0x094e, 0x094f} /* Cn */, { 0x0955, 0x0957} /* Cn */, 733 { 0x0971, 0x0980} /* Cn */, { 0x0984, 0x0984} /* Cn */, 734 { 0x098d, 0x098e} /* Cn */, { 0x0991, 0x0992} /* Cn */, 735 { 0x09a9, 0x09a9} /* Cn */, { 0x09b1, 0x09b1} /* Cn */, 736 { 0x09b3, 0x09b5} /* Cn */, { 0x09ba, 0x09bb} /* Cn */, 737 { 0x09c5, 0x09c6} /* Cn */, { 0x09c9, 0x09ca} /* Cn */, 738 { 0x09ce, 0x09d6} /* Cn */, { 0x09d8, 0x09db} /* Cn */, 739 { 0x09de, 0x09de} /* Cn */, { 0x09e4, 0x09e5} /* Cn */, 740 { 0x09fb, 0x0a00} /* Cn */, { 0x0a04, 0x0a04} /* Cn */, 741 { 0x0a0b, 0x0a0e} /* Cn */, { 0x0a11, 0x0a12} /* Cn */, 742 { 0x0a29, 0x0a29} /* Cn */, { 0x0a31, 0x0a31} /* Cn */, 743 { 0x0a34, 0x0a34} /* Cn */, { 0x0a37, 0x0a37} /* Cn */, 744 { 0x0a3a, 0x0a3b} /* Cn */, { 0x0a3d, 0x0a3d} /* Cn */, 745 { 0x0a43, 0x0a46} /* Cn */, { 0x0a49, 0x0a4a} /* Cn */, 746 { 0x0a4e, 0x0a58} /* Cn */, { 0x0a5d, 0x0a5d} /* Cn */, 747 { 0x0a5f, 0x0a65} /* Cn */, { 0x0a75, 0x0a80} /* Cn */, 748 { 0x0a84, 0x0a84} /* Cn */, { 0x0a8e, 0x0a8e} /* Cn */, 749 { 0x0a92, 0x0a92} /* Cn */, { 0x0aa9, 0x0aa9} /* Cn */, 750 { 0x0ab1, 0x0ab1} /* Cn */, { 0x0ab4, 0x0ab4} /* Cn */, 751 { 0x0aba, 0x0abb} /* Cn */, { 0x0ac6, 0x0ac6} /* Cn */, 752 { 0x0aca, 0x0aca} /* Cn */, { 0x0ace, 0x0acf} /* Cn */, 753 { 0x0ad1, 0x0adf} /* Cn */, { 0x0ae4, 0x0ae5} /* Cn */, 754 { 0x0af0, 0x0af0} /* Cn */, { 0x0af2, 0x0b00} /* Cn */, 755 { 0x0b04, 0x0b04} /* Cn */, { 0x0b0d, 0x0b0e} /* Cn */, 756 { 0x0b11, 0x0b12} /* Cn */, { 0x0b29, 0x0b29} /* Cn */, 757 { 0x0b31, 0x0b31} /* Cn */, { 0x0b34, 0x0b34} /* Cn */, 758 { 0x0b3a, 0x0b3b} /* Cn */, { 0x0b44, 0x0b46} /* Cn */, 759 { 0x0b49, 0x0b4a} /* Cn */, { 0x0b4e, 0x0b55} /* Cn */, 760 { 0x0b58, 0x0b5b} /* Cn */, { 0x0b5e, 0x0b5e} /* Cn */, 761 { 0x0b62, 0x0b65} /* Cn */, { 0x0b72, 0x0b81} /* Cn */, 762 { 0x0b84, 0x0b84} /* Cn */, { 0x0b8b, 0x0b8d} /* Cn */, 763 { 0x0b91, 0x0b91} /* Cn */, { 0x0b96, 0x0b98} /* Cn */, 764 { 0x0b9b, 0x0b9b} /* Cn */, { 0x0b9d, 0x0b9d} /* Cn */, 765 { 0x0ba0, 0x0ba2} /* Cn */, { 0x0ba5, 0x0ba7} /* Cn */, 766 { 0x0bab, 0x0bad} /* Cn */, { 0x0bb6, 0x0bb6} /* Cn */, 767 { 0x0bba, 0x0bbd} /* Cn */, { 0x0bc3, 0x0bc5} /* Cn */, 768 { 0x0bc9, 0x0bc9} /* Cn */, { 0x0bce, 0x0bd6} /* Cn */, 769 { 0x0bd8, 0x0be6} /* Cn */, { 0x0bfb, 0x0c00} /* Cn */, 770 { 0x0c04, 0x0c04} /* Cn */, { 0x0c0d, 0x0c0d} /* Cn */, 771 { 0x0c11, 0x0c11} /* Cn */, { 0x0c29, 0x0c29} /* Cn */, 772 { 0x0c34, 0x0c34} /* Cn */, { 0x0c3a, 0x0c3d} /* Cn */, 773 { 0x0c45, 0x0c45} /* Cn */, { 0x0c49, 0x0c49} /* Cn */, 774 { 0x0c4e, 0x0c54} /* Cn */, { 0x0c57, 0x0c5f} /* Cn */, 775 { 0x0c62, 0x0c65} /* Cn */, { 0x0c70, 0x0c81} /* Cn */, 776 { 0x0c84, 0x0c84} /* Cn */, { 0x0c8d, 0x0c8d} /* Cn */, 777 { 0x0c91, 0x0c91} /* Cn */, { 0x0ca9, 0x0ca9} /* Cn */, 778 { 0x0cb4, 0x0cb4} /* Cn */, { 0x0cba, 0x0cbb} /* Cn */, 779 { 0x0cc5, 0x0cc5} /* Cn */, { 0x0cc9, 0x0cc9} /* Cn */, 780 { 0x0cce, 0x0cd4} /* Cn */, { 0x0cd7, 0x0cdd} /* Cn */, 781 { 0x0cdf, 0x0cdf} /* Cn */, { 0x0ce2, 0x0ce5} /* Cn */, 782 { 0x0cf0, 0x0d01} /* Cn */, { 0x0d04, 0x0d04} /* Cn */, 783 { 0x0d0d, 0x0d0d} /* Cn */, { 0x0d11, 0x0d11} /* Cn */, 784 { 0x0d29, 0x0d29} /* Cn */, { 0x0d3a, 0x0d3d} /* Cn */, 785 { 0x0d44, 0x0d45} /* Cn */, { 0x0d49, 0x0d49} /* Cn */, 786 { 0x0d4e, 0x0d56} /* Cn */, { 0x0d58, 0x0d5f} /* Cn */, 787 { 0x0d62, 0x0d65} /* Cn */, { 0x0d70, 0x0d81} /* Cn */, 788 { 0x0d84, 0x0d84} /* Cn */, { 0x0d97, 0x0d99} /* Cn */, 789 { 0x0db2, 0x0db2} /* Cn */, { 0x0dbc, 0x0dbc} /* Cn */, 790 { 0x0dbe, 0x0dbf} /* Cn */, { 0x0dc7, 0x0dc9} /* Cn */, 791 { 0x0dcb, 0x0dce} /* Cn */, { 0x0dd5, 0x0dd5} /* Cn */, 792 { 0x0dd7, 0x0dd7} /* Cn */, { 0x0de0, 0x0df1} /* Cn */, 793 { 0x0df5, 0x0e00} /* Cn */, { 0x0e3b, 0x0e3e} /* Cn */, 794 { 0x0e5c, 0x0e80} /* Cn */, { 0x0e83, 0x0e83} /* Cn */, 795 { 0x0e85, 0x0e86} /* Cn */, { 0x0e89, 0x0e89} /* Cn */, 796 { 0x0e8b, 0x0e8c} /* Cn */, { 0x0e8e, 0x0e93} /* Cn */, 797 { 0x0e98, 0x0e98} /* Cn */, { 0x0ea0, 0x0ea0} /* Cn */, 798 { 0x0ea4, 0x0ea4} /* Cn */, { 0x0ea6, 0x0ea6} /* Cn */, 799 { 0x0ea8, 0x0ea9} /* Cn */, { 0x0eac, 0x0eac} /* Cn */, 800 { 0x0eba, 0x0eba} /* Cn */, { 0x0ebe, 0x0ebf} /* Cn */, 801 { 0x0ec5, 0x0ec5} /* Cn */, { 0x0ec7, 0x0ec7} /* Cn */, 802 { 0x0ece, 0x0ecf} /* Cn */, { 0x0eda, 0x0edb} /* Cn */, 803 { 0x0ede, 0x0eff} /* Cn */, { 0x0f48, 0x0f48} /* Cn */, 804 { 0x0f6b, 0x0f70} /* Cn */, { 0x0f8c, 0x0f8f} /* Cn */, 805 { 0x0f98, 0x0f98} /* Cn */, { 0x0fbd, 0x0fbd} /* Cn */, 806 { 0x0fcd, 0x0fce} /* Cn */, { 0x0fd0, 0x0fff} /* Cn */, 807 { 0x1022, 0x1022} /* Cn */, { 0x1028, 0x1028} /* Cn */, 808 { 0x102b, 0x102b} /* Cn */, { 0x1033, 0x1035} /* Cn */, 809 { 0x103a, 0x103f} /* Cn */, { 0x105a, 0x109f} /* Cn */, 810 { 0x10c6, 0x10cf} /* Cn */, { 0x10f9, 0x10fa} /* Cn */, 811 { 0x10fc, 0x10ff} /* Cn */, { 0x115a, 0x115e} /* Cn */, 812 { 0x11a3, 0x11a7} /* Cn */, { 0x11fa, 0x11ff} /* Cn */, 813 { 0x1207, 0x1207} /* Cn */, { 0x1247, 0x1247} /* Cn */, 814 { 0x1249, 0x1249} /* Cn */, { 0x124e, 0x124f} /* Cn */, 815 { 0x1257, 0x1257} /* Cn */, { 0x1259, 0x1259} /* Cn */, 816 { 0x125e, 0x125f} /* Cn */, { 0x1287, 0x1287} /* Cn */, 817 { 0x1289, 0x1289} /* Cn */, { 0x128e, 0x128f} /* Cn */, 818 { 0x12af, 0x12af} /* Cn */, { 0x12b1, 0x12b1} /* Cn */, 819 { 0x12b6, 0x12b7} /* Cn */, { 0x12bf, 0x12bf} /* Cn */, 820 { 0x12c1, 0x12c1} /* Cn */, { 0x12c6, 0x12c7} /* Cn */, 821 { 0x12cf, 0x12cf} /* Cn */, { 0x12d7, 0x12d7} /* Cn */, 822 { 0x12ef, 0x12ef} /* Cn */, { 0x130f, 0x130f} /* Cn */, 823 { 0x1311, 0x1311} /* Cn */, { 0x1316, 0x1317} /* Cn */, 824 { 0x131f, 0x131f} /* Cn */, { 0x1347, 0x1347} /* Cn */, 825 { 0x135b, 0x1360} /* Cn */, { 0x137d, 0x139f} /* Cn */, 826 { 0x13f5, 0x1400} /* Cn */, { 0x1677, 0x167f} /* Cn */, 827 { 0x169d, 0x169f} /* Cn */, { 0x16f1, 0x16ff} /* Cn */, 828 { 0x170d, 0x170d} /* Cn */, { 0x1715, 0x171f} /* Cn */, 829 { 0x1737, 0x173f} /* Cn */, { 0x1754, 0x175f} /* Cn */, 830 { 0x176d, 0x176d} /* Cn */, { 0x1771, 0x1771} /* Cn */, 831 { 0x1774, 0x177f} /* Cn */, 832 #if 0 833 { 0x17b4, 0x17b5} /* Cf */, 834 #endif 835 { 0x17de, 0x17df} /* Cn */, { 0x17ea, 0x17ef} /* Cn */, 836 { 0x17fa, 0x17ff} /* Cn */, { 0x180f, 0x180f} /* Cn */, 837 { 0x181a, 0x181f} /* Cn */, { 0x1878, 0x187f} /* Cn */, 838 { 0x18aa, 0x18ff} /* Cn */, { 0x191d, 0x191f} /* Cn */, 839 { 0x192c, 0x192f} /* Cn */, { 0x193c, 0x193f} /* Cn */, 840 { 0x1941, 0x1943} /* Cn */, { 0x196e, 0x196f} /* Cn */, 841 { 0x1975, 0x19df} /* Cn */, { 0x1a00, 0x1cff} /* Cn */, 842 { 0x1d6c, 0x1dff} /* Cn */, { 0x1e9c, 0x1e9f} /* Cn */, 843 { 0x1efa, 0x1eff} /* Cn */, { 0x1f16, 0x1f17} /* Cn */, 844 { 0x1f1e, 0x1f1f} /* Cn */, { 0x1f46, 0x1f47} /* Cn */, 845 { 0x1f4e, 0x1f4f} /* Cn */, { 0x1f58, 0x1f58} /* Cn */, 846 { 0x1f5a, 0x1f5a} /* Cn */, { 0x1f5c, 0x1f5c} /* Cn */, 847 { 0x1f5e, 0x1f5e} /* Cn */, { 0x1f7e, 0x1f7f} /* Cn */, 848 { 0x1fb5, 0x1fb5} /* Cn */, { 0x1fc5, 0x1fc5} /* Cn */, 849 { 0x1fd4, 0x1fd5} /* Cn */, { 0x1fdc, 0x1fdc} /* Cn */, 850 { 0x1ff0, 0x1ff1} /* Cn */, { 0x1ff5, 0x1ff5} /* Cn */, 851 { 0x1fff, 0x1fff} /* Cn */, { 0x200b, 0x200f} /* Cf */, 852 { 0x2028, 0x2028} /* Zl */, 853 { 0x2029, 0x2029} /* Zp */, 854 { 0x202a, 0x202e} /* Cf */, 855 { 0x2055, 0x2056} /* Cn */, { 0x2058, 0x205e} /* Cn */, 856 { 0x2060, 0x2063} /* Cf */, 857 { 0x2064, 0x2069} /* Cn */, 858 { 0x206a, 0x206f} /* Cf */, 859 { 0x2072, 0x2073} /* Cn */, { 0x208f, 0x209f} /* Cn */, 860 { 0x20b2, 0x20cf} /* Cn */, { 0x20eb, 0x20ff} /* Cn */, 861 { 0x213c, 0x213c} /* Cn */, { 0x214c, 0x2152} /* Cn */, 862 { 0x2184, 0x218f} /* Cn */, { 0x23d1, 0x23ff} /* Cn */, 863 { 0x2427, 0x243f} /* Cn */, { 0x244b, 0x245f} /* Cn */, 864 { 0x2618, 0x2618} /* Cn */, { 0x267e, 0x267f} /* Cn */, 865 { 0x2692, 0x269f} /* Cn */, { 0x26a2, 0x2700} /* Cn */, 866 { 0x2705, 0x2705} /* Cn */, { 0x270a, 0x270b} /* Cn */, 867 { 0x2728, 0x2728} /* Cn */, { 0x274c, 0x274c} /* Cn */, 868 { 0x274e, 0x274e} /* Cn */, { 0x2753, 0x2755} /* Cn */, 869 { 0x2757, 0x2757} /* Cn */, { 0x275f, 0x2760} /* Cn */, 870 { 0x2795, 0x2797} /* Cn */, { 0x27b0, 0x27b0} /* Cn */, 871 { 0x27bf, 0x27cf} /* Cn */, { 0x27ec, 0x27ef} /* Cn */, 872 { 0x2b0e, 0x2e7f} /* Cn */, { 0x2e9a, 0x2e9a} /* Cn */, 873 { 0x2ef4, 0x2eff} /* Cn */, { 0x2fd6, 0x2fef} /* Cn */, 874 { 0x2ffc, 0x2fff} /* Cn */, { 0x3040, 0x3040} /* Cn */, 875 { 0x3097, 0x3098} /* Cn */, { 0x3100, 0x3104} /* Cn */, 876 { 0x312d, 0x3130} /* Cn */, { 0x318f, 0x318f} /* Cn */, 877 { 0x31b8, 0x31ef} /* Cn */, { 0x321f, 0x321f} /* Cn */, 878 { 0x3244, 0x324f} /* Cn */, { 0x327e, 0x327e} /* Cn */, 879 { 0x32ff, 0x32ff} /* Cn */, { 0x4db6, 0x4dbf} /* Cn */, 880 { 0x9fa6, 0x9fff} /* Cn */, { 0xa48d, 0xa48f} /* Cn */, 881 { 0xa4c7, 0xabff} /* Cn */, { 0xd7a4, 0xd7ff} /* Cn */, 882 { 0xd800, 0xdfff} /* Cs */, 883 { 0xe000, 0xf8ff} /* Co */, 884 { 0xfa2e, 0xfa2f} /* Cn */, { 0xfa6b, 0xfaff} /* Cn */, 885 { 0xfb07, 0xfb12} /* Cn */, { 0xfb18, 0xfb1c} /* Cn */, 886 { 0xfb37, 0xfb37} /* Cn */, { 0xfb3d, 0xfb3d} /* Cn */, 887 { 0xfb3f, 0xfb3f} /* Cn */, { 0xfb42, 0xfb42} /* Cn */, 888 { 0xfb45, 0xfb45} /* Cn */, { 0xfbb2, 0xfbd2} /* Cn */, 889 { 0xfd40, 0xfd4f} /* Cn */, { 0xfd90, 0xfd91} /* Cn */, 890 { 0xfdc8, 0xfdef} /* Cn */, { 0xfdfe, 0xfdff} /* Cn */, 891 { 0xfe10, 0xfe1f} /* Cn */, { 0xfe24, 0xfe2f} /* Cn */, 892 { 0xfe53, 0xfe53} /* Cn */, { 0xfe67, 0xfe67} /* Cn */, 893 { 0xfe6c, 0xfe6f} /* Cn */, { 0xfe75, 0xfe75} /* Cn */, 894 { 0xfefd, 0xfefe} /* Cn */, 895 { 0xfeff, 0xfeff} /* Cf */, 896 { 0xff00, 0xff00} /* Cn */, { 0xffbf, 0xffc1} /* Cn */, 897 { 0xffc8, 0xffc9} /* Cn */, { 0xffd0, 0xffd1} /* Cn */, 898 { 0xffd8, 0xffd9} /* Cn */, { 0xffdd, 0xffdf} /* Cn */, 899 { 0xffe7, 0xffe7} /* Cn */, { 0xffef, 0xfff8} /* Cn */, 900 { 0xfff9, 0xfffb} /* Cf */, 901 { 0xfffe, 0xffff} /* Cn */, { 0x1000c, 0x1000c} /* Cn */, 902 { 0x10027, 0x10027} /* Cn */, { 0x1003b, 0x1003b} /* Cn */, 903 { 0x1003e, 0x1003e} /* Cn */, { 0x1004e, 0x1004f} /* Cn */, 904 { 0x1005e, 0x1007f} /* Cn */, { 0x100fb, 0x100ff} /* Cn */, 905 { 0x10103, 0x10106} /* Cn */, { 0x10134, 0x10136} /* Cn */, 906 { 0x10140, 0x102ff} /* Cn */, { 0x1031f, 0x1031f} /* Cn */, 907 { 0x10324, 0x1032f} /* Cn */, { 0x1034b, 0x1037f} /* Cn */, 908 { 0x1039e, 0x1039e} /* Cn */, { 0x103a0, 0x103ff} /* Cn */, 909 { 0x1049e, 0x1049f} /* Cn */, { 0x104aa, 0x107ff} /* Cn */, 910 { 0x10806, 0x10807} /* Cn */, { 0x10809, 0x10809} /* Cn */, 911 { 0x10836, 0x10836} /* Cn */, { 0x10839, 0x1083b} /* Cn */, 912 { 0x1083d, 0x1083e} /* Cn */, { 0x10840, 0x1cfff} /* Cn */, 913 { 0x1d0f6, 0x1d0ff} /* Cn */, { 0x1d127, 0x1d129} /* Cn */, 914 { 0x1d173, 0x1d17a} /* Cf */, 915 { 0x1d1de, 0x1d2ff} /* Cn */, { 0x1d357, 0x1d3ff} /* Cn */, 916 { 0x1d455, 0x1d455} /* Cn */, { 0x1d49d, 0x1d49d} /* Cn */, 917 { 0x1d4a0, 0x1d4a1} /* Cn */, { 0x1d4a3, 0x1d4a4} /* Cn */, 918 { 0x1d4a7, 0x1d4a8} /* Cn */, { 0x1d4ad, 0x1d4ad} /* Cn */, 919 { 0x1d4ba, 0x1d4ba} /* Cn */, { 0x1d4bc, 0x1d4bc} /* Cn */, 920 { 0x1d4c4, 0x1d4c4} /* Cn */, { 0x1d506, 0x1d506} /* Cn */, 921 { 0x1d50b, 0x1d50c} /* Cn */, { 0x1d515, 0x1d515} /* Cn */, 922 { 0x1d51d, 0x1d51d} /* Cn */, { 0x1d53a, 0x1d53a} /* Cn */, 923 { 0x1d53f, 0x1d53f} /* Cn */, { 0x1d545, 0x1d545} /* Cn */, 924 { 0x1d547, 0x1d549} /* Cn */, { 0x1d551, 0x1d551} /* Cn */, 925 { 0x1d6a4, 0x1d6a7} /* Cn */, { 0x1d7ca, 0x1d7cd} /* Cn */, 926 { 0x1d800, 0x1ffff} /* Cn */, { 0x2a6d7, 0x2f7ff} /* Cn */, 927 { 0x2fa1e, 0xe0000} /* Cn */, 928 { 0xe0001, 0xe0001} /* Cf */, 929 { 0xe0002, 0xe001f} /* Cn */, 930 { 0xe0020, 0xe007f} /* Cf */, 931 { 0xe0080, 0xe00ff} /* Cn */, { 0xe01f0, 0xeffff} /* Cn */, 932 { 0xf0000, 0xffffd} /* Co */, 933 { 0xffffe, 0xfffff} /* Cn */, 934 {0x100000,0x10fffd} /* Co */, 935 {0x10fffe,0x10ffff} /* Cn */, 936 {0x110000,0x7fffffff} /* ISO 10646?? */ 937 }; 938 939 /* 940 * Double width characters 941 * W: East Asian Wide 942 * F: East Asian Full-width 943 */ 944 static struct wchar_range wide_table[] = { 945 { 0x1100, 0x115f} /* W */, { 0x2329, 0x232a} /* W */, 946 { 0x2E80, 0x2FFB} /* W */, 947 { 0x3000, 0x3000} /* F */, 948 { 0x3001, 0x303E} /* W */, { 0x3041, 0x4DB5} /* W */, 949 { 0x4E00, 0x9FA5} /* W */, { 0xA000, 0xA4C6} /* W */, 950 { 0xAC00, 0xD7A3} /* W */, { 0xF900, 0xFA6A} /* W */, 951 { 0xFE30, 0xFE6B} /* W */, 952 { 0xFF01, 0xFF60} /* F */, { 0xFFE0, 0xFFE6} /* F */, 953 { 0x20000, 0x2FFFD} /* W */, { 0x30000, 0x3FFFD} /* W */, 954 955 }; 956 957 static int 958 is_in_table(ch, table, tsize) 959 LWCHAR ch; 960 struct wchar_range table[]; 961 int tsize; 962 { 963 int hi; 964 int lo; 965 966 /* Binary search in the table. */ 967 if (ch < table[0].first) 968 return 0; 969 lo = 0; 970 hi = tsize - 1; 971 while (lo <= hi) 972 { 973 int mid = (lo + hi) / 2; 974 if (ch > table[mid].last) 975 lo = mid + 1; 976 else if (ch < table[mid].first) 977 hi = mid - 1; 978 else 979 return 1; 980 } 981 return 0; 982 } 983 984 /* 985 * Is a character a UTF-8 composing character? 986 * If a composing character follows any char, the two combine into one glyph. 987 */ 988 public int 989 is_composing_char(ch) 990 LWCHAR ch; 991 { 992 return is_in_table(ch, comp_table, (sizeof(comp_table) / sizeof(*comp_table))); 993 } 994 995 /* 996 * Should this UTF-8 character be treated as binary? 997 */ 998 public int 999 is_ubin_char(ch) 1000 LWCHAR ch; 1001 { 1002 return is_in_table(ch, ubin_table, (sizeof(ubin_table) / sizeof(*ubin_table))); 1003 } 1004 1005 /* 1006 * Is this a double width UTF-8 character? 1007 */ 1008 public int 1009 is_wide_char(ch) 1010 LWCHAR ch; 1011 { 1012 return is_in_table(ch, wide_table, (sizeof(wide_table) / sizeof(*wide_table))); 1013 } 1014 1015 /* 1016 * Is a character a UTF-8 combining character? 1017 * A combining char acts like an ordinary char, but if it follows 1018 * a specific char (not any char), the two combine into one glyph. 1019 */ 1020 public int 1021 is_combining_char(ch1, ch2) 1022 LWCHAR ch1; 1023 LWCHAR ch2; 1024 { 1025 /* The table is small; use linear search. */ 1026 int i; 1027 for (i = 0; i < sizeof(comb_table)/sizeof(*comb_table); i++) 1028 { 1029 if (ch1 == comb_table[i].first && 1030 ch2 == comb_table[i].last) 1031 return 1; 1032 } 1033 return 0; 1034 } 1035 1036