xref: /freebsd/contrib/less/charset.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
1 /*
2  * Copyright (C) 1984-2007  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 #ifdef CODESET
326 	/*
327 	 * Try using the codeset name as the charset name.
328 	 */
329 	s = nl_langinfo(CODESET);
330 	if (icharset(s, 1))
331 		return;
332 #endif
333 #endif
334 
335 #if HAVE_STRSTR
336 	/*
337 	 * Check whether LC_ALL, LC_CTYPE or LANG look like UTF-8 is used.
338 	 */
339 	if ((s = lgetenv("LC_ALL")) != NULL ||
340 	    (s = lgetenv("LC_CTYPE")) != NULL ||
341 	    (s = lgetenv("LANG")) != NULL)
342 	{
343 		if (   strstr(s, "UTF-8") != NULL || strstr(s, "utf-8") != NULL
344 		    || strstr(s, "UTF8")  != NULL || strstr(s, "utf8")  != NULL)
345 			if (icharset("utf-8", 1))
346 				return;
347 	}
348 #endif
349 
350 #if HAVE_LOCALE
351 	/*
352 	 * Get character definitions from locale functions,
353 	 * rather than from predefined charset entry.
354 	 */
355 	ilocale();
356 #if MSDOS_COMPILER
357 	/*
358 	 * Default to "dos".
359 	 */
360 	(void) icharset("dos", 1);
361 #else
362 	/*
363 	 * Default to "latin1".
364 	 */
365 	(void) icharset("latin1", 1);
366 #endif
367 #endif
368 }
369 
370 /*
371  * Initialize charset data structures.
372  */
373 	public void
374 init_charset()
375 {
376 	char *s;
377 
378 #if HAVE_LOCALE
379 	setlocale(LC_ALL, "");
380 #endif
381 
382 	set_charset();
383 
384 	s = lgetenv("LESSBINFMT");
385 	setbinfmt(s, &binfmt, "*s<%02X>");
386 
387 	s = lgetenv("LESSUTFBINFMT");
388 	setbinfmt(s, &utfbinfmt, "<U+%04lX>");
389 }
390 
391 /*
392  * Is a given character a "binary" character?
393  */
394 	public int
395 binary_char(c)
396 	unsigned char c;
397 {
398 	c &= 0377;
399 	return (chardef[c] & IS_BINARY_CHAR);
400 }
401 
402 /*
403  * Is a given character a "control" character?
404  */
405 	public int
406 control_char(c)
407 	int c;
408 {
409 	c &= 0377;
410 	return (chardef[c] & IS_CONTROL_CHAR);
411 }
412 
413 /*
414  * Return the printable form of a character.
415  * For example, in the "ascii" charset '\3' is printed as "^C".
416  */
417 	public char *
418 prchar(c)
419 	int c;
420 {
421 	/* {{ This buffer can be overrun if LESSBINFMT is a long string. }} */
422 	static char buf[32];
423 
424 	c &= 0377;
425 	if ((c < 128 || !utf_mode) && !control_char(c))
426 		SNPRINTF1(buf, sizeof(buf), "%c", c);
427 	else if (c == ESC)
428 		strcpy(buf, "ESC");
429 #if IS_EBCDIC_HOST
430 	else if (!binary_char(c) && c < 64)
431 		SNPRINTF1(buf, sizeof(buf), "^%c",
432 		/*
433 		 * This array roughly inverts CONTROL() #defined in less.h,
434 	 	 * and should be kept in sync with CONTROL() and IBM-1047.
435  	 	 */
436 		"@ABC.I.?...KLMNO"
437 		"PQRS.JH.XY.."
438 		"\\]^_"
439 		"......W[.....EFG"
440 		"..V....D....TU.Z"[c]);
441 #else
442   	else if (c < 128 && !control_char(c ^ 0100))
443   		SNPRINTF1(buf, sizeof(buf), "^%c", c ^ 0100);
444 #endif
445 	else
446 		SNPRINTF1(buf, sizeof(buf), binfmt, c);
447 	return (buf);
448 }
449 
450 /*
451  * Return the printable form of a UTF-8 character.
452  */
453 	public char *
454 prutfchar(ch)
455 	LWCHAR ch;
456 {
457 	static char buf[32];
458 
459 	if (ch == ESC)
460 		strcpy(buf, "ESC");
461   	else if (ch < 128 && control_char(ch))
462 	{
463 		if (!control_char(ch ^ 0100))
464 			SNPRINTF1(buf, sizeof(buf), "^%c", ((char) ch) ^ 0100);
465 		else
466 			SNPRINTF1(buf, sizeof(buf), binfmt, (char) ch);
467 	} else if (is_ubin_char(ch))
468 		SNPRINTF1(buf, sizeof(buf), utfbinfmt, ch);
469 	else
470 	{
471 		int len;
472 		if (ch >= 0x80000000)
473 		{
474 			len = 3;
475 			ch = 0xFFFD;
476 		} else
477 		{
478 			len =   (ch < 0x80) ? 1
479 			      : (ch < 0x800) ? 2
480 			      : (ch < 0x10000) ? 3
481 			      : (ch < 0x200000) ? 4
482 			      : (ch < 0x4000000) ? 5
483 			      : 6;
484 		}
485 		buf[len] = '\0';
486 		if (len == 1)
487 			*buf = (char) ch;
488 		else
489 		{
490 			*buf = ((1 << len) - 1) << (8 - len);
491 			while (--len > 0)
492 			{
493 				buf[len] = (char) (0x80 | (ch & 0x3F));
494 				ch >>= 6;
495 			}
496 			*buf |= ch;
497 		}
498 	}
499 	return (buf);
500 }
501 
502 /*
503  * Get the length of a UTF-8 character in bytes.
504  */
505 	public int
506 utf_len(ch)
507 	char ch;
508 {
509 	if ((ch & 0x80) == 0)
510 		return 1;
511 	if ((ch & 0xE0) == 0xC0)
512 		return 2;
513 	if ((ch & 0xF0) == 0xE0)
514 		return 3;
515 	if ((ch & 0xF8) == 0xF0)
516 		return 4;
517 	if ((ch & 0xFC) == 0xF8)
518 		return 5;
519 	if ((ch & 0xFE) == 0xFC)
520 		return 6;
521 	/* Invalid UTF-8 encoding. */
522 	return 1;
523 }
524 
525 /*
526  * Is a UTF-8 character well-formed?
527  */
528 	public int
529 is_utf8_well_formed(s)
530 	unsigned char *s;
531 {
532 	int i;
533 	int len;
534 
535 	if (IS_UTF8_INVALID(s[0]))
536 		return (0);
537 
538 	len = utf_len((char) s[0]);
539 	if (len == 1)
540 		return (1);
541 	if (len == 2)
542 	{
543 		if (s[0] < 0xC2)
544 		    return (0);
545 	} else
546 	{
547 		unsigned char mask;
548 		mask = (~((1 << (8-len)) - 1)) & 0xFF;
549 		if (s[0] == mask && (s[1] & mask) == 0x80)
550 			return (0);
551 	}
552 
553 	for (i = 1;  i < len;  i++)
554 		if (!IS_UTF8_TRAIL(s[i]))
555 			return (0);
556 	return (1);
557 }
558 
559 /*
560  * Get the value of a UTF-8 character.
561  */
562 	public LWCHAR
563 get_wchar(p)
564 	char *p;
565 {
566 	switch (utf_len(p[0]))
567 	{
568 	case 1:
569 	default:
570 		/* 0xxxxxxx */
571 		return (LWCHAR)
572 			(p[0] & 0xFF);
573 	case 2:
574 		/* 110xxxxx 10xxxxxx */
575 		return (LWCHAR) (
576 			((p[0] & 0x1F) << 6) |
577 			(p[1] & 0x3F));
578 	case 3:
579 		/* 1110xxxx 10xxxxxx 10xxxxxx */
580 		return (LWCHAR) (
581 			((p[0] & 0x0F) << 12) |
582 			((p[1] & 0x3F) << 6) |
583 			(p[2] & 0x3F));
584 	case 4:
585 		/* 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */
586 		return (LWCHAR) (
587 			((p[0] & 0x07) << 18) |
588 			((p[1] & 0x3F) << 12) |
589 			((p[2] & 0x3F) << 6) |
590 			(p[3] & 0x3F));
591 	case 5:
592 		/* 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx */
593 		return (LWCHAR) (
594 			((p[0] & 0x03) << 24) |
595 			((p[1] & 0x3F) << 18) |
596 			((p[2] & 0x3F) << 12) |
597 			((p[3] & 0x3F) << 6) |
598 			(p[4] & 0x3F));
599 	case 6:
600 		/* 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx */
601 		return (LWCHAR) (
602 			((p[0] & 0x01) << 30) |
603 			((p[1] & 0x3F) << 24) |
604 			((p[2] & 0x3F) << 18) |
605 			((p[3] & 0x3F) << 12) |
606 			((p[4] & 0x3F) << 6) |
607 			(p[5] & 0x3F));
608 	}
609 }
610 
611 /*
612  * Store a character into a UTF-8 string.
613  */
614 	public void
615 put_wchar(pp, ch)
616 	char **pp;
617 	LWCHAR ch;
618 {
619 	if (!utf_mode || ch < 0x80)
620 	{
621 		/* 0xxxxxxx */
622 		*(*pp)++ = (char) ch;
623 	} else if (ch < 0x800)
624 	{
625 		/* 110xxxxx 10xxxxxx */
626 		*(*pp)++ = (char) (0xC0 | ((ch >> 6) & 0x1F));
627 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
628 	} else if (ch < 0x10000)
629 	{
630 		/* 1110xxxx 10xxxxxx 10xxxxxx */
631 		*(*pp)++ = (char) (0xE0 | ((ch >> 12) & 0x0F));
632 		*(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
633 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
634 	} else if (ch < 0x200000)
635 	{
636 		/* 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */
637 		*(*pp)++ = (char) (0xF0 | ((ch >> 18) & 0x07));
638 		*(*pp)++ = (char) (0x80 | ((ch >> 12) & 0x3F));
639 		*(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
640 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
641 	} else if (ch < 0x4000000)
642 	{
643 		/* 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx */
644 		*(*pp)++ = (char) (0xF0 | ((ch >> 24) & 0x03));
645 		*(*pp)++ = (char) (0x80 | ((ch >> 18) & 0x3F));
646 		*(*pp)++ = (char) (0x80 | ((ch >> 12) & 0x3F));
647 		*(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
648 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
649 	} else
650 	{
651 		/* 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx */
652 		*(*pp)++ = (char) (0xF0 | ((ch >> 30) & 0x01));
653 		*(*pp)++ = (char) (0x80 | ((ch >> 24) & 0x3F));
654 		*(*pp)++ = (char) (0x80 | ((ch >> 18) & 0x3F));
655 		*(*pp)++ = (char) (0x80 | ((ch >> 12) & 0x3F));
656 		*(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
657 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
658 	}
659 }
660 
661 /*
662  * Step forward or backward one character in a string.
663  */
664 	public LWCHAR
665 step_char(pp, dir, limit)
666 	char **pp;
667 	signed int dir;
668 	char *limit;
669 {
670 	LWCHAR ch;
671 	int len;
672 	char *p = *pp;
673 
674 	if (!utf_mode)
675 	{
676 		/* It's easy if chars are one byte. */
677 		if (dir > 0)
678 			ch = (LWCHAR) ((p < limit) ? *p++ : 0);
679 		else
680 			ch = (LWCHAR) ((p > limit) ? *--p : 0);
681 	} else if (dir > 0)
682 	{
683 		len = utf_len(*p);
684 		if (p + len > limit)
685 		{
686 			ch = 0;
687 			p = limit;
688 		} else
689 		{
690 			ch = get_wchar(p);
691 			p += len;
692 		}
693 	} else
694 	{
695 		while (p > limit && IS_UTF8_TRAIL(p[-1]))
696 			p--;
697 		if (p > limit)
698 			ch = get_wchar(--p);
699 		else
700 			ch = 0;
701 	}
702 	*pp = p;
703 	return ch;
704 }
705 
706 /*
707  * Unicode characters data
708  */
709 struct wchar_range { LWCHAR first, last; };
710 
711 /*
712  * Characters with general category values
713  *	Mn: Mark, Nonspacing
714  *	Me: Mark, Enclosing
715  * Last synched with
716  *	<http://www.unicode.org/Public/5.0.0/ucd/UnicodeData-5.0.0d7.txt>
717  *	dated 2005-11-30T00:58:48Z
718  */
719 static struct wchar_range comp_table[] = {
720 	{  0x0300,  0x036F} /* Mn */, {  0x0483,  0x0486} /* Mn */,
721 	{  0x0488,  0x0489} /* Me */,
722 	{  0x0591,  0x05BD} /* Mn */, {  0x05BF,  0x05BF} /* Mn */,
723 	{  0x05C1,  0x05C2} /* Mn */, {  0x05C4,  0x05C5} /* Mn */,
724 	{  0x05C7,  0x05C7} /* Mn */, {  0x0610,  0x0615} /* Mn */,
725 	{  0x064B,  0x065E} /* Mn */, {  0x0670,  0x0670} /* Mn */,
726 	{  0x06D6,  0x06DC} /* Mn */,
727 	{  0x06DE,  0x06DE} /* Me */,
728 	{  0x06DF,  0x06E4} /* Mn */, {  0x06E7,  0x06E8} /* Mn */,
729 	{  0x06EA,  0x06ED} /* Mn */, {  0x0711,  0x0711} /* Mn */,
730 	{  0x0730,  0x074A} /* Mn */, {  0x07A6,  0x07B0} /* Mn */,
731 	{  0x07EB,  0x07F3} /* Mn */, {  0x0901,  0x0902} /* Mn */,
732 	{  0x093C,  0x093C} /* Mn */, {  0x0941,  0x0948} /* Mn */,
733 	{  0x094D,  0x094D} /* Mn */, {  0x0951,  0x0954} /* Mn */,
734 	{  0x0962,  0x0963} /* Mn */, {  0x0981,  0x0981} /* Mn */,
735 	{  0x09BC,  0x09BC} /* Mn */, {  0x09C1,  0x09C4} /* Mn */,
736 	{  0x09CD,  0x09CD} /* Mn */, {  0x09E2,  0x09E3} /* Mn */,
737 	{  0x0A01,  0x0A02} /* Mn */, {  0x0A3C,  0x0A3C} /* Mn */,
738 	{  0x0A41,  0x0A42} /* Mn */, {  0x0A47,  0x0A48} /* Mn */,
739 	{  0x0A4B,  0x0A4D} /* Mn */, {  0x0A70,  0x0A71} /* Mn */,
740 	{  0x0A81,  0x0A82} /* Mn */, {  0x0ABC,  0x0ABC} /* Mn */,
741 	{  0x0AC1,  0x0AC5} /* Mn */, {  0x0AC7,  0x0AC8} /* Mn */,
742 	{  0x0ACD,  0x0ACD} /* Mn */, {  0x0AE2,  0x0AE3} /* Mn */,
743 	{  0x0B01,  0x0B01} /* Mn */, {  0x0B3C,  0x0B3C} /* Mn */,
744 	{  0x0B3F,  0x0B3F} /* Mn */, {  0x0B41,  0x0B43} /* Mn */,
745 	{  0x0B4D,  0x0B4D} /* Mn */, {  0x0B56,  0x0B56} /* Mn */,
746 	{  0x0B82,  0x0B82} /* Mn */, {  0x0BC0,  0x0BC0} /* Mn */,
747 	{  0x0BCD,  0x0BCD} /* Mn */, {  0x0C3E,  0x0C40} /* Mn */,
748 	{  0x0C46,  0x0C48} /* Mn */, {  0x0C4A,  0x0C4D} /* Mn */,
749 	{  0x0C55,  0x0C56} /* Mn */, {  0x0CBC,  0x0CBC} /* Mn */,
750 	{  0x0CBF,  0x0CBF} /* Mn */, {  0x0CC6,  0x0CC6} /* Mn */,
751 	{  0x0CCC,  0x0CCD} /* Mn */, {  0x0CE2,  0x0CE3} /* Mn */,
752 	{  0x0D41,  0x0D43} /* Mn */, {  0x0D4D,  0x0D4D} /* Mn */,
753 	{  0x0DCA,  0x0DCA} /* Mn */, {  0x0DD2,  0x0DD4} /* Mn */,
754 	{  0x0DD6,  0x0DD6} /* Mn */, {  0x0E31,  0x0E31} /* Mn */,
755 	{  0x0E34,  0x0E3A} /* Mn */, {  0x0E47,  0x0E4E} /* Mn */,
756 	{  0x0EB1,  0x0EB1} /* Mn */, {  0x0EB4,  0x0EB9} /* Mn */,
757 	{  0x0EBB,  0x0EBC} /* Mn */, {  0x0EC8,  0x0ECD} /* Mn */,
758 	{  0x0F18,  0x0F19} /* Mn */, {  0x0F35,  0x0F35} /* Mn */,
759 	{  0x0F37,  0x0F37} /* Mn */, {  0x0F39,  0x0F39} /* Mn */,
760 	{  0x0F71,  0x0F7E} /* Mn */, {  0x0F80,  0x0F84} /* Mn */,
761 	{  0x0F86,  0x0F87} /* Mn */, {  0x0F90,  0x0F97} /* Mn */,
762 	{  0x0F99,  0x0FBC} /* Mn */, {  0x0FC6,  0x0FC6} /* Mn */,
763 	{  0x102D,  0x1030} /* Mn */, {  0x1032,  0x1032} /* Mn */,
764 	{  0x1036,  0x1037} /* Mn */, {  0x1039,  0x1039} /* Mn */,
765 	{  0x1058,  0x1059} /* Mn */, {  0x135F,  0x135F} /* Mn */,
766 	{  0x1712,  0x1714} /* Mn */, {  0x1732,  0x1734} /* Mn */,
767 	{  0x1752,  0x1753} /* Mn */, {  0x1772,  0x1773} /* Mn */,
768 	{  0x17B7,  0x17BD} /* Mn */, {  0x17C6,  0x17C6} /* Mn */,
769 	{  0x17C9,  0x17D3} /* Mn */, {  0x17DD,  0x17DD} /* Mn */,
770 	{  0x180B,  0x180D} /* Mn */, {  0x18A9,  0x18A9} /* Mn */,
771 	{  0x1920,  0x1922} /* Mn */, {  0x1927,  0x1928} /* Mn */,
772 	{  0x1932,  0x1932} /* Mn */, {  0x1939,  0x193B} /* Mn */,
773 	{  0x1A17,  0x1A18} /* Mn */, {  0x1B00,  0x1B03} /* Mn */,
774 	{  0x1B34,  0x1B34} /* Mn */, {  0x1B36,  0x1B3A} /* Mn */,
775 	{  0x1B3C,  0x1B3C} /* Mn */, {  0x1B42,  0x1B42} /* Mn */,
776 	{  0x1B6B,  0x1B73} /* Mn */, {  0x1DC0,  0x1DCA} /* Mn */,
777 	{  0x1DFE,  0x1DFF} /* Mn */, {  0x20D0,  0x20DC} /* Mn */,
778 	{  0x20DD,  0x20E0} /* Me */,
779 	{  0x20E1,  0x20E1} /* Mn */,
780 	{  0x20E2,  0x20E4} /* Me */,
781 	{  0x20E5,  0x20EF} /* Mn */, {  0x302A,  0x302F} /* Mn */,
782 	{  0x3099,  0x309A} /* Mn */, {  0xA806,  0xA806} /* Mn */,
783 	{  0xA80B,  0xA80B} /* Mn */, {  0xA825,  0xA826} /* Mn */,
784 	{  0xFB1E,  0xFB1E} /* Mn */, {  0xFE00,  0xFE0F} /* Mn */,
785 	{  0xFE20,  0xFE23} /* Mn */, { 0x10A01, 0x10A03} /* Mn */,
786 	{ 0x10A05, 0x10A06} /* Mn */, { 0x10A0C, 0x10A0F} /* Mn */,
787 	{ 0x10A38, 0x10A3A} /* Mn */, { 0x10A3F, 0x10A3F} /* Mn */,
788 	{ 0x1D167, 0x1D169} /* Mn */, { 0x1D17B, 0x1D182} /* Mn */,
789 	{ 0x1D185, 0x1D18B} /* Mn */, { 0x1D1AA, 0x1D1AD} /* Mn */,
790 	{ 0x1D242, 0x1D244} /* Mn */, { 0xE0100, 0xE01EF} /* Mn */,
791 };
792 
793 /*
794  * Special pairs, not ranges.
795  */
796 static struct wchar_range comb_table[] = {
797 	{0x0644,0x0622}, {0x0644,0x0623}, {0x0644,0x0625}, {0x0644,0x0627},
798 };
799 
800 /*
801  * Characters with general category values
802  *	Cc: Other, Control
803  *	Cf: Other, Format
804  *	Cs: Other, Surrogate
805  *	Co: Other, Private Use
806  *	Cn: Other, Not Assigned
807  *	Zl: Separator, Line
808  *	Zp: Separator, Paragraph
809  * Last synched with
810  *	<http://www.unicode.org/Public/5.0.0/ucd/UnicodeData-5.0.0d7.txt>
811  *	dated 2005-11-30T00:58:48Z
812  */
813 static struct wchar_range ubin_table[] = {
814 	{  0x0000,  0x001F} /* Cc */, {  0x007F,  0x009F} /* Cc */,
815 #if 0
816 	{  0x00AD,  0x00AD} /* Cf */,
817 #endif
818 	{  0x0370,  0x0373} /* Cn */, {  0x0376,  0x0379} /* Cn */,
819 	{  0x037F,  0x0383} /* Cn */, {  0x038B,  0x038B} /* Cn */,
820 	{  0x038D,  0x038D} /* Cn */, {  0x03A2,  0x03A2} /* Cn */,
821 	{  0x03CF,  0x03CF} /* Cn */, {  0x0487,  0x0487} /* Cn */,
822 	{  0x0514,  0x0530} /* Cn */, {  0x0557,  0x0558} /* Cn */,
823 	{  0x0560,  0x0560} /* Cn */, {  0x0588,  0x0588} /* Cn */,
824 	{  0x058B,  0x0590} /* Cn */, {  0x05C8,  0x05CF} /* Cn */,
825 	{  0x05EB,  0x05EF} /* Cn */, {  0x05F5,  0x05FF} /* Cn */,
826 #if 0
827 	{  0x0600,  0x0603} /* Cf */,
828 #endif
829 	{  0x0604,  0x060A} /* Cn */, {  0x0616,  0x061A} /* Cn */,
830 	{  0x061C,  0x061D} /* Cn */, {  0x0620,  0x0620} /* Cn */,
831 	{  0x063B,  0x063F} /* Cn */, {  0x065F,  0x065F} /* Cn */,
832 #if 0
833 	{  0x06DD,  0x06DD} /* Cf */,
834 #endif
835 	{  0x070E,  0x070E} /* Cn */,
836 #if 0
837 	{  0x070F,  0x070F} /* Cf */,
838 #endif
839 	{  0x074B,  0x074C} /* Cn */, {  0x076E,  0x077F} /* Cn */,
840 	{  0x07B2,  0x07BF} /* Cn */, {  0x07FB,  0x0900} /* Cn */,
841 	{  0x093A,  0x093B} /* Cn */, {  0x094E,  0x094F} /* Cn */,
842 	{  0x0955,  0x0957} /* Cn */, {  0x0971,  0x097A} /* Cn */,
843 	{  0x0980,  0x0980} /* Cn */, {  0x0984,  0x0984} /* Cn */,
844 	{  0x098D,  0x098E} /* Cn */, {  0x0991,  0x0992} /* Cn */,
845 	{  0x09A9,  0x09A9} /* Cn */, {  0x09B1,  0x09B1} /* Cn */,
846 	{  0x09B3,  0x09B5} /* Cn */, {  0x09BA,  0x09BB} /* Cn */,
847 	{  0x09C5,  0x09C6} /* Cn */, {  0x09C9,  0x09CA} /* Cn */,
848 	{  0x09CF,  0x09D6} /* Cn */, {  0x09D8,  0x09DB} /* Cn */,
849 	{  0x09DE,  0x09DE} /* Cn */, {  0x09E4,  0x09E5} /* Cn */,
850 	{  0x09FB,  0x0A00} /* Cn */, {  0x0A04,  0x0A04} /* Cn */,
851 	{  0x0A0B,  0x0A0E} /* Cn */, {  0x0A11,  0x0A12} /* Cn */,
852 	{  0x0A29,  0x0A29} /* Cn */, {  0x0A31,  0x0A31} /* Cn */,
853 	{  0x0A34,  0x0A34} /* Cn */, {  0x0A37,  0x0A37} /* Cn */,
854 	{  0x0A3A,  0x0A3B} /* Cn */, {  0x0A3D,  0x0A3D} /* Cn */,
855 	{  0x0A43,  0x0A46} /* Cn */, {  0x0A49,  0x0A4A} /* Cn */,
856 	{  0x0A4E,  0x0A58} /* Cn */, {  0x0A5D,  0x0A5D} /* Cn */,
857 	{  0x0A5F,  0x0A65} /* Cn */, {  0x0A75,  0x0A80} /* Cn */,
858 	{  0x0A84,  0x0A84} /* Cn */, {  0x0A8E,  0x0A8E} /* Cn */,
859 	{  0x0A92,  0x0A92} /* Cn */, {  0x0AA9,  0x0AA9} /* Cn */,
860 	{  0x0AB1,  0x0AB1} /* Cn */, {  0x0AB4,  0x0AB4} /* Cn */,
861 	{  0x0ABA,  0x0ABB} /* Cn */, {  0x0AC6,  0x0AC6} /* Cn */,
862 	{  0x0ACA,  0x0ACA} /* Cn */, {  0x0ACE,  0x0ACF} /* Cn */,
863 	{  0x0AD1,  0x0ADF} /* Cn */, {  0x0AE4,  0x0AE5} /* Cn */,
864 	{  0x0AF0,  0x0AF0} /* Cn */, {  0x0AF2,  0x0B00} /* Cn */,
865 	{  0x0B04,  0x0B04} /* Cn */, {  0x0B0D,  0x0B0E} /* Cn */,
866 	{  0x0B11,  0x0B12} /* Cn */, {  0x0B29,  0x0B29} /* Cn */,
867 	{  0x0B31,  0x0B31} /* Cn */, {  0x0B34,  0x0B34} /* Cn */,
868 	{  0x0B3A,  0x0B3B} /* Cn */, {  0x0B44,  0x0B46} /* Cn */,
869 	{  0x0B49,  0x0B4A} /* Cn */, {  0x0B4E,  0x0B55} /* Cn */,
870 	{  0x0B58,  0x0B5B} /* Cn */, {  0x0B5E,  0x0B5E} /* Cn */,
871 	{  0x0B62,  0x0B65} /* Cn */, {  0x0B72,  0x0B81} /* Cn */,
872 	{  0x0B84,  0x0B84} /* Cn */, {  0x0B8B,  0x0B8D} /* Cn */,
873 	{  0x0B91,  0x0B91} /* Cn */, {  0x0B96,  0x0B98} /* Cn */,
874 	{  0x0B9B,  0x0B9B} /* Cn */, {  0x0B9D,  0x0B9D} /* Cn */,
875 	{  0x0BA0,  0x0BA2} /* Cn */, {  0x0BA5,  0x0BA7} /* Cn */,
876 	{  0x0BAB,  0x0BAD} /* Cn */, {  0x0BBA,  0x0BBD} /* Cn */,
877 	{  0x0BC3,  0x0BC5} /* Cn */, {  0x0BC9,  0x0BC9} /* Cn */,
878 	{  0x0BCE,  0x0BD6} /* Cn */, {  0x0BD8,  0x0BE5} /* Cn */,
879 	{  0x0BFB,  0x0C00} /* Cn */, {  0x0C04,  0x0C04} /* Cn */,
880 	{  0x0C0D,  0x0C0D} /* Cn */, {  0x0C11,  0x0C11} /* Cn */,
881 	{  0x0C29,  0x0C29} /* Cn */, {  0x0C34,  0x0C34} /* Cn */,
882 	{  0x0C3A,  0x0C3D} /* Cn */, {  0x0C45,  0x0C45} /* Cn */,
883 	{  0x0C49,  0x0C49} /* Cn */, {  0x0C4E,  0x0C54} /* Cn */,
884 	{  0x0C57,  0x0C5F} /* Cn */, {  0x0C62,  0x0C65} /* Cn */,
885 	{  0x0C70,  0x0C81} /* Cn */, {  0x0C84,  0x0C84} /* Cn */,
886 	{  0x0C8D,  0x0C8D} /* Cn */, {  0x0C91,  0x0C91} /* Cn */,
887 	{  0x0CA9,  0x0CA9} /* Cn */, {  0x0CB4,  0x0CB4} /* Cn */,
888 	{  0x0CBA,  0x0CBB} /* Cn */, {  0x0CC5,  0x0CC5} /* Cn */,
889 	{  0x0CC9,  0x0CC9} /* Cn */, {  0x0CCE,  0x0CD4} /* Cn */,
890 	{  0x0CD7,  0x0CDD} /* Cn */, {  0x0CDF,  0x0CDF} /* Cn */,
891 	{  0x0CE4,  0x0CE5} /* Cn */, {  0x0CF0,  0x0CF0} /* Cn */,
892 	{  0x0CF3,  0x0D01} /* Cn */, {  0x0D04,  0x0D04} /* Cn */,
893 	{  0x0D0D,  0x0D0D} /* Cn */, {  0x0D11,  0x0D11} /* Cn */,
894 	{  0x0D29,  0x0D29} /* Cn */, {  0x0D3A,  0x0D3D} /* Cn */,
895 	{  0x0D44,  0x0D45} /* Cn */, {  0x0D49,  0x0D49} /* Cn */,
896 	{  0x0D4E,  0x0D56} /* Cn */, {  0x0D58,  0x0D5F} /* Cn */,
897 	{  0x0D62,  0x0D65} /* Cn */, {  0x0D70,  0x0D81} /* Cn */,
898 	{  0x0D84,  0x0D84} /* Cn */, {  0x0D97,  0x0D99} /* Cn */,
899 	{  0x0DB2,  0x0DB2} /* Cn */, {  0x0DBC,  0x0DBC} /* Cn */,
900 	{  0x0DBE,  0x0DBF} /* Cn */, {  0x0DC7,  0x0DC9} /* Cn */,
901 	{  0x0DCB,  0x0DCE} /* Cn */, {  0x0DD5,  0x0DD5} /* Cn */,
902 	{  0x0DD7,  0x0DD7} /* Cn */, {  0x0DE0,  0x0DF1} /* Cn */,
903 	{  0x0DF5,  0x0E00} /* Cn */, {  0x0E3B,  0x0E3E} /* Cn */,
904 	{  0x0E5C,  0x0E80} /* Cn */, {  0x0E83,  0x0E83} /* Cn */,
905 	{  0x0E85,  0x0E86} /* Cn */, {  0x0E89,  0x0E89} /* Cn */,
906 	{  0x0E8B,  0x0E8C} /* Cn */, {  0x0E8E,  0x0E93} /* Cn */,
907 	{  0x0E98,  0x0E98} /* Cn */, {  0x0EA0,  0x0EA0} /* Cn */,
908 	{  0x0EA4,  0x0EA4} /* Cn */, {  0x0EA6,  0x0EA6} /* Cn */,
909 	{  0x0EA8,  0x0EA9} /* Cn */, {  0x0EAC,  0x0EAC} /* Cn */,
910 	{  0x0EBA,  0x0EBA} /* Cn */, {  0x0EBE,  0x0EBF} /* Cn */,
911 	{  0x0EC5,  0x0EC5} /* Cn */, {  0x0EC7,  0x0EC7} /* Cn */,
912 	{  0x0ECE,  0x0ECF} /* Cn */, {  0x0EDA,  0x0EDB} /* Cn */,
913 	{  0x0EDE,  0x0EFF} /* Cn */, {  0x0F48,  0x0F48} /* Cn */,
914 	{  0x0F6B,  0x0F70} /* Cn */, {  0x0F8C,  0x0F8F} /* Cn */,
915 	{  0x0F98,  0x0F98} /* Cn */, {  0x0FBD,  0x0FBD} /* Cn */,
916 	{  0x0FCD,  0x0FCE} /* Cn */, {  0x0FD2,  0x0FFF} /* Cn */,
917 	{  0x1022,  0x1022} /* Cn */, {  0x1028,  0x1028} /* Cn */,
918 	{  0x102B,  0x102B} /* Cn */, {  0x1033,  0x1035} /* Cn */,
919 	{  0x103A,  0x103F} /* Cn */, {  0x105A,  0x109F} /* Cn */,
920 	{  0x10C6,  0x10CF} /* Cn */, {  0x10FD,  0x10FF} /* Cn */,
921 	{  0x115A,  0x115E} /* Cn */, {  0x11A3,  0x11A7} /* Cn */,
922 	{  0x11FA,  0x11FF} /* Cn */, {  0x1249,  0x1249} /* Cn */,
923 	{  0x124E,  0x124F} /* Cn */, {  0x1257,  0x1257} /* Cn */,
924 	{  0x1259,  0x1259} /* Cn */, {  0x125E,  0x125F} /* Cn */,
925 	{  0x1289,  0x1289} /* Cn */, {  0x128E,  0x128F} /* Cn */,
926 	{  0x12B1,  0x12B1} /* Cn */, {  0x12B6,  0x12B7} /* Cn */,
927 	{  0x12BF,  0x12BF} /* Cn */, {  0x12C1,  0x12C1} /* Cn */,
928 	{  0x12C6,  0x12C7} /* Cn */, {  0x12D7,  0x12D7} /* Cn */,
929 	{  0x1311,  0x1311} /* Cn */, {  0x1316,  0x1317} /* Cn */,
930 	{  0x135B,  0x135E} /* Cn */, {  0x137D,  0x137F} /* Cn */,
931 	{  0x139A,  0x139F} /* Cn */, {  0x13F5,  0x1400} /* Cn */,
932 	{  0x1677,  0x167F} /* Cn */, {  0x169D,  0x169F} /* Cn */,
933 	{  0x16F1,  0x16FF} /* Cn */, {  0x170D,  0x170D} /* Cn */,
934 	{  0x1715,  0x171F} /* Cn */, {  0x1737,  0x173F} /* Cn */,
935 	{  0x1754,  0x175F} /* Cn */, {  0x176D,  0x176D} /* Cn */,
936 	{  0x1771,  0x1771} /* Cn */, {  0x1774,  0x177F} /* Cn */,
937 #if 0
938 	{  0x17B4,  0x17B5} /* Cf */,
939 #endif
940 	{  0x17DE,  0x17DF} /* Cn */, {  0x17EA,  0x17EF} /* Cn */,
941 	{  0x17FA,  0x17FF} /* Cn */, {  0x180F,  0x180F} /* Cn */,
942 	{  0x181A,  0x181F} /* Cn */, {  0x1878,  0x187F} /* Cn */,
943 	{  0x18AA,  0x18FF} /* Cn */, {  0x191D,  0x191F} /* Cn */,
944 	{  0x192C,  0x192F} /* Cn */, {  0x193C,  0x193F} /* Cn */,
945 	{  0x1941,  0x1943} /* Cn */, {  0x196E,  0x196F} /* Cn */,
946 	{  0x1975,  0x197F} /* Cn */, {  0x19AA,  0x19AF} /* Cn */,
947 	{  0x19CA,  0x19CF} /* Cn */, {  0x19DA,  0x19DD} /* Cn */,
948 	{  0x1A1C,  0x1A1D} /* Cn */, {  0x1A20,  0x1AFF} /* Cn */,
949 	{  0x1B4C,  0x1B4F} /* Cn */, {  0x1B7D,  0x1CFF} /* Cn */,
950 	{  0x1DCB,  0x1DFD} /* Cn */, {  0x1E9C,  0x1E9F} /* Cn */,
951 	{  0x1EFA,  0x1EFF} /* Cn */, {  0x1F16,  0x1F17} /* Cn */,
952 	{  0x1F1E,  0x1F1F} /* Cn */, {  0x1F46,  0x1F47} /* Cn */,
953 	{  0x1F4E,  0x1F4F} /* Cn */, {  0x1F58,  0x1F58} /* Cn */,
954 	{  0x1F5A,  0x1F5A} /* Cn */, {  0x1F5C,  0x1F5C} /* Cn */,
955 	{  0x1F5E,  0x1F5E} /* Cn */, {  0x1F7E,  0x1F7F} /* Cn */,
956 	{  0x1FB5,  0x1FB5} /* Cn */, {  0x1FC5,  0x1FC5} /* Cn */,
957 	{  0x1FD4,  0x1FD5} /* Cn */, {  0x1FDC,  0x1FDC} /* Cn */,
958 	{  0x1FF0,  0x1FF1} /* Cn */, {  0x1FF5,  0x1FF5} /* Cn */,
959 	{  0x1FFF,  0x1FFF} /* Cn */,
960 	{  0x200B,  0x200F} /* Cf */,
961 	{  0x2028,  0x2028} /* Zl */,
962 	{  0x2029,  0x2029} /* Zp */,
963 	{  0x202A,  0x202E} /* Cf */,
964 	{  0x2060,  0x2063} /* Cf */,
965 	{  0x2064,  0x2069} /* Cn */,
966 	{  0x206A,  0x206F} /* Cf */,
967 	{  0x2072,  0x2073} /* Cn */, {  0x208F,  0x208F} /* Cn */,
968 	{  0x2095,  0x209F} /* Cn */, {  0x20B6,  0x20CF} /* Cn */,
969 	{  0x20F0,  0x20FF} /* Cn */, {  0x214F,  0x2152} /* Cn */,
970 	{  0x2185,  0x218F} /* Cn */, {  0x23E8,  0x23FF} /* Cn */,
971 	{  0x2427,  0x243F} /* Cn */, {  0x244B,  0x245F} /* Cn */,
972 	{  0x269D,  0x269F} /* Cn */, {  0x26B3,  0x2700} /* Cn */,
973 	{  0x2705,  0x2705} /* Cn */, {  0x270A,  0x270B} /* Cn */,
974 	{  0x2728,  0x2728} /* Cn */, {  0x274C,  0x274C} /* Cn */,
975 	{  0x274E,  0x274E} /* Cn */, {  0x2753,  0x2755} /* Cn */,
976 	{  0x2757,  0x2757} /* Cn */, {  0x275F,  0x2760} /* Cn */,
977 	{  0x2795,  0x2797} /* Cn */, {  0x27B0,  0x27B0} /* Cn */,
978 	{  0x27BF,  0x27BF} /* Cn */, {  0x27CB,  0x27CF} /* Cn */,
979 	{  0x27EC,  0x27EF} /* Cn */, {  0x2B1B,  0x2B1F} /* Cn */,
980 	{  0x2B24,  0x2BFF} /* Cn */, {  0x2C2F,  0x2C2F} /* Cn */,
981 	{  0x2C5F,  0x2C5F} /* Cn */, {  0x2C6D,  0x2C73} /* Cn */,
982 	{  0x2C78,  0x2C7F} /* Cn */, {  0x2CEB,  0x2CF8} /* Cn */,
983 	{  0x2D26,  0x2D2F} /* Cn */, {  0x2D66,  0x2D6E} /* Cn */,
984 	{  0x2D70,  0x2D7F} /* Cn */, {  0x2D97,  0x2D9F} /* Cn */,
985 	{  0x2DA7,  0x2DA7} /* Cn */, {  0x2DAF,  0x2DAF} /* Cn */,
986 	{  0x2DB7,  0x2DB7} /* Cn */, {  0x2DBF,  0x2DBF} /* Cn */,
987 	{  0x2DC7,  0x2DC7} /* Cn */, {  0x2DCF,  0x2DCF} /* Cn */,
988 	{  0x2DD7,  0x2DD7} /* Cn */, {  0x2DDF,  0x2DFF} /* Cn */,
989 	{  0x2E18,  0x2E1B} /* Cn */, {  0x2E1E,  0x2E7F} /* Cn */,
990 	{  0x2E9A,  0x2E9A} /* Cn */, {  0x2EF4,  0x2EFF} /* Cn */,
991 	{  0x2FD6,  0x2FEF} /* Cn */, {  0x2FFC,  0x2FFF} /* Cn */,
992 	{  0x3040,  0x3040} /* Cn */, {  0x3097,  0x3098} /* Cn */,
993 	{  0x3100,  0x3104} /* Cn */, {  0x312D,  0x3130} /* Cn */,
994 	{  0x318F,  0x318F} /* Cn */, {  0x31B8,  0x31BF} /* Cn */,
995 	{  0x31D0,  0x31EF} /* Cn */, {  0x321F,  0x321F} /* Cn */,
996 	{  0x3244,  0x324F} /* Cn */, {  0x32FF,  0x32FF} /* Cn */,
997 	{  0x4DB6,  0x4DBF} /* Cn */, {  0x9FBC,  0x9FFF} /* Cn */,
998 	{  0xA48D,  0xA48F} /* Cn */, {  0xA4C7,  0xA6FF} /* Cn */,
999 	{  0xA71B,  0xA71F} /* Cn */, {  0xA722,  0xA7FF} /* Cn */,
1000 	{  0xA82C,  0xA83F} /* Cn */, {  0xA878,  0xABFF} /* Cn */,
1001 	{  0xD7A4,  0xD7FF} /* Cn */,
1002 	{  0xD800,  0xDFFF} /* Cs */,
1003 	{  0xE000,  0xF8FF} /* Co */,
1004 	{  0xFA2E,  0xFA2F} /* Cn */, {  0xFA6B,  0xFA6F} /* Cn */,
1005 	{  0xFADA,  0xFAFF} /* Cn */, {  0xFB07,  0xFB12} /* Cn */,
1006 	{  0xFB18,  0xFB1C} /* Cn */, {  0xFB37,  0xFB37} /* Cn */,
1007 	{  0xFB3D,  0xFB3D} /* Cn */, {  0xFB3F,  0xFB3F} /* Cn */,
1008 	{  0xFB42,  0xFB42} /* Cn */, {  0xFB45,  0xFB45} /* Cn */,
1009 	{  0xFBB2,  0xFBD2} /* Cn */, {  0xFD40,  0xFD4F} /* Cn */,
1010 	{  0xFD90,  0xFD91} /* Cn */, {  0xFDC8,  0xFDEF} /* Cn */,
1011 	{  0xFDFE,  0xFDFF} /* Cn */, {  0xFE1A,  0xFE1F} /* Cn */,
1012 	{  0xFE24,  0xFE2F} /* Cn */, {  0xFE53,  0xFE53} /* Cn */,
1013 	{  0xFE67,  0xFE67} /* Cn */, {  0xFE6C,  0xFE6F} /* Cn */,
1014 	{  0xFE75,  0xFE75} /* Cn */, {  0xFEFD,  0xFEFE} /* Cn */,
1015 	{  0xFEFF,  0xFEFF} /* Cf */,
1016 	{  0xFF00,  0xFF00} /* Cn */, {  0xFFBF,  0xFFC1} /* Cn */,
1017 	{  0xFFC8,  0xFFC9} /* Cn */, {  0xFFD0,  0xFFD1} /* Cn */,
1018 	{  0xFFD8,  0xFFD9} /* Cn */, {  0xFFDD,  0xFFDF} /* Cn */,
1019 	{  0xFFE7,  0xFFE7} /* Cn */, {  0xFFEF,  0xFFF8} /* Cn */,
1020 	{  0xFFF9,  0xFFFB} /* Cf */,
1021 	{  0xFFFE,  0xFFFF} /* Cn */, { 0x1000C, 0x1000C} /* Cn */,
1022 	{ 0x10027, 0x10027} /* Cn */, { 0x1003B, 0x1003B} /* Cn */,
1023 	{ 0x1003E, 0x1003E} /* Cn */, { 0x1004E, 0x1004F} /* Cn */,
1024 	{ 0x1005E, 0x1007F} /* Cn */, { 0x100FB, 0x100FF} /* Cn */,
1025 	{ 0x10103, 0x10106} /* Cn */, { 0x10134, 0x10136} /* Cn */,
1026 	{ 0x1018B, 0x102FF} /* Cn */, { 0x1031F, 0x1031F} /* Cn */,
1027 	{ 0x10324, 0x1032F} /* Cn */, { 0x1034B, 0x1037F} /* Cn */,
1028 	{ 0x1039E, 0x1039E} /* Cn */, { 0x103C4, 0x103C7} /* Cn */,
1029 	{ 0x103D6, 0x103FF} /* Cn */,
1030 	{ 0x1049E, 0x1049F} /* Cn */, { 0x104AA, 0x107FF} /* Cn */,
1031 	{ 0x10806, 0x10807} /* Cn */, { 0x10809, 0x10809} /* Cn */,
1032 	{ 0x10836, 0x10836} /* Cn */, { 0x10839, 0x1083B} /* Cn */,
1033 	{ 0x1083D, 0x1083E} /* Cn */, { 0x10840, 0x108FF} /* Cn */,
1034 	{ 0x1091A, 0x1091E} /* Cn */, { 0x10920, 0x109FF} /* Cn */,
1035 	{ 0x10A04, 0x10A04} /* Cn */, { 0x10A07, 0x10A0B} /* Cn */,
1036 	{ 0x10A14, 0x10A14} /* Cn */, { 0x10A18, 0x10A18} /* Cn */,
1037 	{ 0x10A34, 0x10A37} /* Cn */, { 0x10A3B, 0x10A3E} /* Cn */,
1038 	{ 0x10A48, 0x10A4F} /* Cn */, { 0x10A59, 0x11FFF} /* Cn */,
1039 	{ 0x1236F, 0x123FF} /* Cn */, { 0x12463, 0x1246F} /* Cn */,
1040 	{ 0x12474, 0x1CFFF} /* Cn */, { 0x1D0F6, 0x1D0FF} /* Cn */,
1041 	{ 0x1D127, 0x1D129} /* Cn */,
1042 	{ 0x1D173, 0x1D17A} /* Cf */,
1043 	{ 0x1D1DE, 0x1D1FF} /* Cn */, { 0x1D246, 0x1D2FF} /* Cn */,
1044 	{ 0x1D357, 0x1D35F} /* Cn */, { 0x1D372, 0x1D3FF} /* Cn */,
1045 	{ 0x1D455, 0x1D455} /* Cn */, { 0x1D49D, 0x1D49D} /* Cn */,
1046 	{ 0x1D4A0, 0x1D4A1} /* Cn */, { 0x1D4A3, 0x1D4A4} /* Cn */,
1047 	{ 0x1D4A7, 0x1D4A8} /* Cn */, { 0x1D4AD, 0x1D4AD} /* Cn */,
1048 	{ 0x1D4BA, 0x1D4BA} /* Cn */, { 0x1D4BC, 0x1D4BC} /* Cn */,
1049 	{ 0x1D4C4, 0x1D4C4} /* Cn */, { 0x1D506, 0x1D506} /* Cn */,
1050 	{ 0x1D50B, 0x1D50C} /* Cn */, { 0x1D515, 0x1D515} /* Cn */,
1051 	{ 0x1D51D, 0x1D51D} /* Cn */, { 0x1D53A, 0x1D53A} /* Cn */,
1052 	{ 0x1D53F, 0x1D53F} /* Cn */, { 0x1D545, 0x1D545} /* Cn */,
1053 	{ 0x1D547, 0x1D549} /* Cn */, { 0x1D551, 0x1D551} /* Cn */,
1054 	{ 0x1D6A6, 0x1D6A7} /* Cn */, { 0x1D7CC, 0x1D7CD} /* Cn */,
1055 	{ 0x1D800, 0x1FFFF} /* Cn */, { 0x2A6D7, 0x2F7FF} /* Cn */,
1056 	{ 0x2FA1E, 0xE0000} /* Cn */,
1057 	{ 0xE0001, 0xE0001} /* Cf */,
1058 	{ 0xE0002, 0xE001F} /* Cn */,
1059 	{ 0xE0020, 0xE007F} /* Cf */,
1060 	{ 0xE0080, 0xE00FF} /* Cn */, { 0xE01F0, 0xEFFFF} /* Cn */,
1061 	{ 0xF0000, 0xFFFFD} /* Co */,
1062 	{ 0xFFFFE, 0xFFFFF} /* Cn */,
1063 	{0x100000,0x10FFFD} /* Co */,
1064 	{0x10FFFE,0x10FFFF} /* Cn */,
1065 	{0x110000,0x7FFFFFFF} /* ISO 10646?? */
1066 };
1067 
1068 /*
1069  * Double width characters
1070  *	W: East Asian Wide
1071  *	F: East Asian Full-width
1072  * Unassigned code points may be included when they allow ranges to be merged.
1073  * Last synched with
1074  *	<http://www.unicode.org/Public/5.0.0/ucd/EastAsianWidth-5.0.0d2.txt>
1075  *	dated 2005-11-08T01:32:56Z
1076  */
1077 static struct wchar_range wide_table[] = {
1078 	{  0x1100,  0x115F} /* W */, {  0x2329,  0x232A} /* W */,
1079 	{  0x2E80,  0x2FFB} /* W */,
1080 	{  0x3000,  0x3000} /* F */,
1081 	{  0x3001,  0x303E} /* W */, {  0x3041,  0x4DB5} /* W */,
1082 	{  0x4E00,  0x9FBB} /* W */, {  0xA000,  0xA4C6} /* W */,
1083 	{  0xAC00,  0xD7A3} /* W */, {  0xF900,  0xFAD9} /* W */,
1084 	{  0xFE10,  0xFE19} /* W */, {  0xFE30,  0xFE6B} /* W */,
1085 	{  0xFF01,  0xFF60} /* F */, {  0xFFE0,  0xFFE6} /* F */,
1086 	{ 0x20000, 0x2FFFD} /* W */, { 0x30000, 0x3FFFD} /* W */,
1087 };
1088 
1089 	static int
1090 is_in_table(ch, table, tsize)
1091 	LWCHAR ch;
1092 	struct wchar_range table[];
1093 	int tsize;
1094 {
1095 	int hi;
1096 	int lo;
1097 
1098 	/* Binary search in the table. */
1099 	if (ch < table[0].first)
1100 		return 0;
1101 	lo = 0;
1102 	hi = tsize - 1;
1103 	while (lo <= hi)
1104 	{
1105 		int mid = (lo + hi) / 2;
1106 		if (ch > table[mid].last)
1107 			lo = mid + 1;
1108 		else if (ch < table[mid].first)
1109 			hi = mid - 1;
1110 		else
1111 			return 1;
1112 	}
1113 	return 0;
1114 }
1115 
1116 /*
1117  * Is a character a UTF-8 composing character?
1118  * If a composing character follows any char, the two combine into one glyph.
1119  */
1120 	public int
1121 is_composing_char(ch)
1122 	LWCHAR ch;
1123 {
1124 	return is_in_table(ch, comp_table, (sizeof(comp_table) / sizeof(*comp_table)));
1125 }
1126 
1127 /*
1128  * Should this UTF-8 character be treated as binary?
1129  */
1130 	public int
1131 is_ubin_char(ch)
1132 	LWCHAR ch;
1133 {
1134 	return is_in_table(ch, ubin_table, (sizeof(ubin_table) / sizeof(*ubin_table)));
1135 }
1136 
1137 /*
1138  * Is this a double width UTF-8 character?
1139  */
1140 	public int
1141 is_wide_char(ch)
1142 	LWCHAR ch;
1143 {
1144 	return is_in_table(ch, wide_table, (sizeof(wide_table) / sizeof(*wide_table)));
1145 }
1146 
1147 /*
1148  * Is a character a UTF-8 combining character?
1149  * A combining char acts like an ordinary char, but if it follows
1150  * a specific char (not any char), the two combine into one glyph.
1151  */
1152 	public int
1153 is_combining_char(ch1, ch2)
1154 	LWCHAR ch1;
1155 	LWCHAR ch2;
1156 {
1157 	/* The table is small; use linear search. */
1158 	int i;
1159 	for (i = 0;  i < sizeof(comb_table)/sizeof(*comb_table);  i++)
1160 	{
1161 		if (ch1 == comb_table[i].first &&
1162 		    ch2 == comb_table[i].last)
1163 			return 1;
1164 	}
1165 	return 0;
1166 }
1167 
1168