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freebsd/contrib/less/charset.c
Xin LI 6dcb072b30 Import less v394
2006-08-20 15:49:51 +00:00

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/*
* Copyright (C) 1984-2005 Mark Nudelman
*
* You may distribute under the terms of either the GNU General Public
* License or the Less License, as specified in the README file.
*
* For more information about less, or for information on how to
* contact the author, see the README file.
*/
/*
* Functions to define the character set
* and do things specific to the character set.
*/
#include "less.h"
#if HAVE_LOCALE
#include <locale.h>
#include <ctype.h>
#include <langinfo.h>
#endif
#include "charset.h"
public int utf_mode = 0;
/*
* Predefined character sets,
* selected by the LESSCHARSET environment variable.
*/
struct charset {
char *name;
int *p_flag;
char *desc;
} charsets[] = {
{ "ascii", NULL, "8bcccbcc18b95.b" },
{ "utf-8", &utf_mode, "8bcccbcc18b95.b126.bb" },
{ "iso8859", NULL, "8bcccbcc18b95.33b." },
{ "latin3", NULL, "8bcccbcc18b95.33b5.b8.b15.b4.b12.b18.b12.b." },
{ "arabic", NULL, "8bcccbcc18b95.33b.3b.7b2.13b.3b.b26.5b19.b" },
{ "greek", NULL, "8bcccbcc18b95.33b4.2b4.b3.b35.b44.b" },
{ "greek2005", NULL, "8bcccbcc18b95.33b14.b35.b44.b" },
{ "hebrew", NULL, "8bcccbcc18b95.33b.b29.32b28.2b2.b" },
{ "koi8-r", NULL, "8bcccbcc18b95.b." },
{ "KOI8-T", NULL, "8bcccbcc18b95.b8.b6.b8.b.b.5b7.3b4.b4.b3.b.b.3b." },
{ "georgianps", NULL, "8bcccbcc18b95.3b11.4b12.2b." },
{ "tcvn", NULL, "b..b...bcccbccbbb7.8b95.b48.5b." },
{ "TIS-620", NULL, "8bcccbcc18b95.b.4b.11b7.8b." },
{ "next", NULL, "8bcccbcc18b95.bb125.bb" },
{ "dos", NULL, "8bcccbcc12bc5b95.b." },
{ "windows-1251", NULL, "8bcccbcc12bc5b95.b24.b." },
{ "windows-1252", NULL, "8bcccbcc12bc5b95.b.b11.b.2b12.b." },
{ "windows-1255", NULL, "8bcccbcc12bc5b95.b.b8.b.5b9.b.4b." },
{ "ebcdic", NULL, "5bc6bcc7bcc41b.9b7.9b5.b..8b6.10b6.b9.7b9.8b8.17b3.3b9.7b9.8b8.6b10.b.b.b." },
{ "IBM-1047", NULL, "4cbcbc3b9cbccbccbb4c6bcc5b3cbbc4bc4bccbc191.b" },
{ NULL, NULL, NULL }
};
/*
* Support "locale charmap"/nl_langinfo(CODESET) values, as well as others.
*/
struct cs_alias {
char *name;
char *oname;
} cs_aliases[] = {
{ "UTF-8", "utf-8" },
{ "ANSI_X3.4-1968", "ascii" },
{ "US-ASCII", "ascii" },
{ "latin1", "iso8859" },
{ "ISO-8859-1", "iso8859" },
{ "latin9", "iso8859" },
{ "ISO-8859-15", "iso8859" },
{ "latin2", "iso8859" },
{ "ISO-8859-2", "iso8859" },
{ "ISO-8859-3", "latin3" },
{ "latin4", "iso8859" },
{ "ISO-8859-4", "iso8859" },
{ "cyrillic", "iso8859" },
{ "ISO-8859-5", "iso8859" },
{ "ISO-8859-6", "arabic" },
{ "ISO-8859-7", "greek" },
{ "IBM9005", "greek2005" },
{ "ISO-8859-8", "hebrew" },
{ "latin5", "iso8859" },
{ "ISO-8859-9", "iso8859" },
{ "latin6", "iso8859" },
{ "ISO-8859-10", "iso8859" },
{ "latin7", "iso8859" },
{ "ISO-8859-13", "iso8859" },
{ "latin8", "iso8859" },
{ "ISO-8859-14", "iso8859" },
{ "latin10", "iso8859" },
{ "ISO-8859-16", "iso8859" },
{ "IBM437", "dos" },
{ "EBCDIC-US", "ebcdic" },
{ "IBM1047", "IBM-1047" },
{ "KOI8-R", "koi8-r" },
{ "KOI8-U", "koi8-r" },
{ "GEORGIAN-PS", "georgianps" },
{ "TCVN5712-1", "tcvn" },
{ "NEXTSTEP", "next" },
{ "windows", "windows-1252" }, /* backward compatibility */
{ "CP1251", "windows-1251" },
{ "CP1252", "windows-1252" },
{ "CP1255", "windows-1255" },
{ NULL, NULL }
};
#define IS_BINARY_CHAR 01
#define IS_CONTROL_CHAR 02
static char chardef[256];
static char *binfmt = NULL;
static char *utfbinfmt = NULL;
public int binattr = AT_STANDOUT;
/*
* Define a charset, given a description string.
* The string consists of 256 letters,
* one for each character in the charset.
* If the string is shorter than 256 letters, missing letters
* are taken to be identical to the last one.
* A decimal number followed by a letter is taken to be a
* repetition of the letter.
*
* Each letter is one of:
* . normal character
* b binary character
* c control character
*/
static void
ichardef(s)
char *s;
{
register char *cp;
register int n;
register char v;
n = 0;
v = 0;
cp = chardef;
while (*s != '\0')
{
switch (*s++)
{
case '.':
v = 0;
break;
case 'c':
v = IS_CONTROL_CHAR;
break;
case 'b':
v = IS_BINARY_CHAR|IS_CONTROL_CHAR;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
n = (10 * n) + (s[-1] - '0');
continue;
default:
error("invalid chardef", NULL_PARG);
quit(QUIT_ERROR);
/*NOTREACHED*/
}
do
{
if (cp >= chardef + sizeof(chardef))
{
error("chardef longer than 256", NULL_PARG);
quit(QUIT_ERROR);
/*NOTREACHED*/
}
*cp++ = v;
} while (--n > 0);
n = 0;
}
while (cp < chardef + sizeof(chardef))
*cp++ = v;
}
/*
* Define a charset, given a charset name.
* The valid charset names are listed in the "charsets" array.
*/
static int
icharset(name, no_error)
register char *name;
int no_error;
{
register struct charset *p;
register struct cs_alias *a;
if (name == NULL || *name == '\0')
return (0);
/* First see if the name is an alias. */
for (a = cs_aliases; a->name != NULL; a++)
{
if (strcmp(name, a->name) == 0)
{
name = a->oname;
break;
}
}
for (p = charsets; p->name != NULL; p++)
{
if (strcmp(name, p->name) == 0)
{
ichardef(p->desc);
if (p->p_flag != NULL)
*(p->p_flag) = 1;
return (1);
}
}
if (!no_error) {
error("invalid charset name", NULL_PARG);
quit(QUIT_ERROR);
}
return (0);
}
#if HAVE_LOCALE
/*
* Define a charset, given a locale name.
*/
static void
ilocale()
{
register int c;
for (c = 0; c < (int) sizeof(chardef); c++)
{
if (isprint(c))
chardef[c] = 0;
else if (iscntrl(c))
chardef[c] = IS_CONTROL_CHAR;
else
chardef[c] = IS_BINARY_CHAR|IS_CONTROL_CHAR;
}
}
#endif
/*
* Define the printing format for control (or binary utf) chars.
*/
static void
setbinfmt(s, fmtvarptr, default_fmt)
char *s;
char **fmtvarptr;
char *default_fmt;
{
if (s && utf_mode)
{
/* It would be too hard to account for width otherwise. */
char *t = s;
while (*t)
{
if (*t < ' ' || *t > '~')
{
s = default_fmt;
goto attr;
}
t++;
}
}
/* %n is evil */
if (s == NULL || *s == '\0' ||
(*s == '*' && (s[1] == '\0' || s[2] == '\0' || strchr(s + 2, 'n'))) ||
(*s != '*' && strchr(s, 'n')))
s = default_fmt;
/*
* Select the attributes if it starts with "*".
*/
attr:
if (*s == '*')
{
switch (s[1])
{
case 'd': binattr = AT_BOLD; break;
case 'k': binattr = AT_BLINK; break;
case 's': binattr = AT_STANDOUT; break;
case 'u': binattr = AT_UNDERLINE; break;
default: binattr = AT_NORMAL; break;
}
s += 2;
}
*fmtvarptr = s;
}
/*
*
*/
static void
set_charset()
{
char *s;
/*
* See if environment variable LESSCHARSET is defined.
*/
s = lgetenv("LESSCHARSET");
if (icharset(s, 0))
return;
/*
* LESSCHARSET is not defined: try LESSCHARDEF.
*/
s = lgetenv("LESSCHARDEF");
if (s != NULL && *s != '\0')
{
ichardef(s);
return;
}
#if HAVE_LOCALE
/*
* Try using the codeset name as the charset name.
*/
s = nl_langinfo(CODESET);
if (icharset(s, 1))
return;
#endif
#if HAVE_STRSTR
/*
* Check whether LC_ALL, LC_CTYPE or LANG look like UTF-8 is used.
*/
if ((s = lgetenv("LC_ALL")) != NULL ||
(s = lgetenv("LC_CTYPE")) != NULL ||
(s = lgetenv("LANG")) != NULL)
{
if ( strstr(s, "UTF-8") != NULL || strstr(s, "utf-8") != NULL
|| strstr(s, "UTF8") != NULL || strstr(s, "utf8") != NULL)
if (icharset("utf-8", 1))
return;
}
#endif
#if HAVE_LOCALE
/*
* Get character definitions from locale functions,
* rather than from predefined charset entry.
*/
ilocale();
#if MSDOS_COMPILER
/*
* Default to "dos".
*/
(void) icharset("dos", 1);
#else
/*
* Default to "latin1".
*/
(void) icharset("latin1", 1);
#endif
#endif
}
/*
* Initialize charset data structures.
*/
public void
init_charset()
{
char *s;
#if HAVE_LOCALE
setlocale(LC_ALL, "");
#endif
set_charset();
s = lgetenv("LESSBINFMT");
setbinfmt(s, &binfmt, "*s<%02X>");
s = lgetenv("LESSUTFBINFMT");
setbinfmt(s, &utfbinfmt, "<U+%04lX>");
}
/*
* Is a given character a "binary" character?
*/
public int
binary_char(c)
unsigned char c;
{
c &= 0377;
return (chardef[c] & IS_BINARY_CHAR);
}
/*
* Is a given character a "control" character?
*/
public int
control_char(c)
int c;
{
c &= 0377;
return (chardef[c] & IS_CONTROL_CHAR);
}
/*
* Return the printable form of a character.
* For example, in the "ascii" charset '\3' is printed as "^C".
*/
public char *
prchar(c)
int c;
{
/* {{ This buffer can be overrun if LESSBINFMT is a long string. }} */
static char buf[32];
c &= 0377;
if ((c < 128 || !utf_mode) && !control_char(c))
SNPRINTF1(buf, sizeof(buf), "%c", c);
else if (c == ESC)
strcpy(buf, "ESC");
#if IS_EBCDIC_HOST
else if (!binary_char(c) && c < 64)
SNPRINTF1(buf, sizeof(buf), "^%c",
/*
* This array roughly inverts CONTROL() #defined in less.h,
* and should be kept in sync with CONTROL() and IBM-1047.
*/
"@ABC.I.?...KLMNO"
"PQRS.JH.XY.."
"\\]^_"
"......W[.....EFG"
"..V....D....TU.Z"[c]);
#else
else if (c < 128 && !control_char(c ^ 0100))
SNPRINTF1(buf, sizeof(buf), "^%c", c ^ 0100);
#endif
else
SNPRINTF1(buf, sizeof(buf), binfmt, c);
return (buf);
}
/*
* Return the printable form of a UTF-8 character.
*/
public char *
prutfchar(ch)
LWCHAR ch;
{
static char buf[32];
if (ch == ESC)
strcpy(buf, "ESC");
else if (ch < 128 && control_char(ch))
{
if (!control_char(ch ^ 0100))
SNPRINTF1(buf, sizeof(buf), "^%c", ((char) ch) ^ 0100);
else
SNPRINTF1(buf, sizeof(buf), binfmt, (char) ch);
} else if (is_ubin_char(ch))
SNPRINTF1(buf, sizeof(buf), utfbinfmt, ch);
else
{
int len;
if (ch >= 0x80000000)
{
len = 3;
ch = 0xFFFD;
} else
{
len = (ch < 0x80) ? 1
: (ch < 0x800) ? 2
: (ch < 0x10000) ? 3
: (ch < 0x200000) ? 4
: (ch < 0x4000000) ? 5
: 6;
}
buf[len] = '\0';
if (len == 1)
*buf = (char) ch;
else
{
*buf = ((1 << len) - 1) << (8 - len);
while (--len > 0)
{
buf[len] = (char) (0x80 | (ch & 0x3F));
ch >>= 6;
}
*buf |= ch;
}
}
return (buf);
}
/*
* Get the length of a UTF-8 character in bytes.
*/
public int
utf_len(ch)
char ch;
{
if ((ch & 0x80) == 0)
return 1;
if ((ch & 0xE0) == 0xC0)
return 2;
if ((ch & 0xF0) == 0xE0)
return 3;
if ((ch & 0xF8) == 0xF0)
return 4;
if ((ch & 0xFC) == 0xF8)
return 5;
if ((ch & 0xFE) == 0xFC)
return 6;
/* Invalid UTF-8 encoding. */
return 1;
}
/*
* Is a UTF-8 character well-formed?
*/
public int
is_utf8_well_formed(s)
unsigned char *s;
{
int i;
int len;
if (IS_UTF8_INVALID(s[0]))
return (0);
len = utf_len((char) s[0]);
if (len == 1)
return (1);
if (len == 2)
{
if (s[0] < 0xC2)
return (0);
} else
{
unsigned char mask;
mask = (~((1 << (8-len)) - 1)) & 0xFF;
if (s[0] == mask && (s[1] & mask) == 0x80)
return (0);
}
for (i = 1; i < len; i++)
if (!IS_UTF8_TRAIL(s[i]))
return (0);
return (1);
}
/*
* Get the value of a UTF-8 character.
*/
public LWCHAR
get_wchar(p)
char *p;
{
switch (utf_len(p[0]))
{
case 1:
default:
return (LWCHAR)
(p[0] & 0xFF);
case 2:
return (LWCHAR) (
((p[0] & 0x1F) << 6) |
(p[1] & 0x3F));
case 3:
return (LWCHAR) (
((p[0] & 0x0F) << 12) |
((p[1] & 0x3F) << 6) |
(p[2] & 0x3F));
case 4:
return (LWCHAR) (
((p[0] & 0x07) << 18) |
((p[1] & 0x3F) << 12) |
((p[2] & 0x3F) << 6) |
(p[3] & 0x3F));
case 5:
return (LWCHAR) (
((p[0] & 0x03) << 24) |
((p[1] & 0x3F) << 18) |
((p[2] & 0x3F) << 12) |
((p[3] & 0x3F) << 6) |
(p[4] & 0x3F));
case 6:
return (LWCHAR) (
((p[0] & 0x01) << 30) |
((p[1] & 0x3F) << 24) |
((p[2] & 0x3F) << 18) |
((p[3] & 0x3F) << 12) |
((p[4] & 0x3F) << 6) |
(p[5] & 0x3F));
}
}
/*
* Step forward or backward one character in a string.
*/
public LWCHAR
step_char(pp, dir, limit)
char **pp;
signed int dir;
char *limit;
{
LWCHAR ch;
char *p = *pp;
if (!utf_mode)
{
/* It's easy if chars are one byte. */
if (dir > 0)
ch = (LWCHAR) ((p < limit) ? *p++ : 0);
else
ch = (LWCHAR) ((p > limit) ? *--p : 0);
} else if (dir > 0)
{
if (p + utf_len(*p) > limit)
ch = 0;
else
{
ch = get_wchar(p);
p++;
while (IS_UTF8_TRAIL(*p))
p++;
}
} else
{
while (p > limit && IS_UTF8_TRAIL(p[-1]))
p--;
if (p > limit)
ch = get_wchar(--p);
else
ch = 0;
}
*pp = p;
return ch;
}
/*
* Unicode characters data
*/
struct wchar_range { LWCHAR first, last; };
static struct wchar_range comp_table[] = {
{0x300,0x357}, {0x35d,0x36f}, {0x483,0x486}, {0x488,0x489},
{0x591,0x5a1}, {0x5a3,0x5b9}, {0x5bb,0x5bd}, {0x5bf,0x5bf},
{0x5c1,0x5c2}, {0x5c4,0x5c4}, {0x610,0x615}, {0x64b,0x658},
{0x670,0x670}, {0x6d6,0x6dc}, {0x6de,0x6e4}, {0x6e7,0x6e8},
{0x6ea,0x6ed}, {0x711,0x711}, {0x730,0x74a}, {0x7a6,0x7b0},
{0x901,0x902}, {0x93c,0x93c}, {0x941,0x948}, {0x94d,0x94d},
{0x951,0x954}, {0x962,0x963}, {0x981,0x981}, {0x9bc,0x9bc},
{0x9c1,0x9c4}, {0x9cd,0x9cd}, {0x9e2,0x9e3}, {0xa01,0xa02},
{0xa3c,0xa3c}, {0xa41,0xa42}, {0xa47,0xa48}, {0xa4b,0xa4d},
{0xa70,0xa71}, {0xa81,0xa82}, {0xabc,0xabc}, {0xac1,0xac5},
{0xac7,0xac8}, {0xacd,0xacd}, {0xae2,0xae3}, {0xb01,0xb01},
{0xb3c,0xb3c}, {0xb3f,0xb3f}, {0xb41,0xb43}, {0xb4d,0xb4d},
{0xb56,0xb56}, {0xb82,0xb82}, {0xbc0,0xbc0}, {0xbcd,0xbcd},
{0xc3e,0xc40}, {0xc46,0xc48}, {0xc4a,0xc4d}, {0xc55,0xc56},
{0xcbc,0xcbc}, {0xcbf,0xcbf}, {0xcc6,0xcc6}, {0xccc,0xccd},
{0xd41,0xd43}, {0xd4d,0xd4d}, {0xdca,0xdca}, {0xdd2,0xdd4},
{0xdd6,0xdd6}, {0xe31,0xe31}, {0xe34,0xe3a}, {0xe47,0xe4e},
{0xeb1,0xeb1}, {0xeb4,0xeb9}, {0xebb,0xebc}, {0xec8,0xecd},
{0xf18,0xf19}, {0xf35,0xf35}, {0xf37,0xf37}, {0xf39,0xf39},
{0xf71,0xf7e}, {0xf80,0xf84}, {0xf86,0xf87}, {0xf90,0xf97},
{0xf99,0xfbc}, {0xfc6,0xfc6}, {0x102d,0x1030}, {0x1032,0x1032},
{0x1036,0x1037}, {0x1039,0x1039}, {0x1058,0x1059},
{0x1712,0x1714}, {0x1732,0x1734}, {0x1752,0x1753},
{0x1772,0x1773}, {0x17b7,0x17bd}, {0x17c6,0x17c6},
{0x17c9,0x17d3}, {0x17dd,0x17dd}, {0x180b,0x180d},
{0x18a9,0x18a9}, {0x1920,0x1922}, {0x1927,0x1928},
{0x1932,0x1932}, {0x1939,0x193b}, {0x20d0,0x20ea},
{0x302a,0x302f}, {0x3099,0x309a}, {0xfb1e,0xfb1e},
{0xfe00,0xfe0f}, {0xfe20,0xfe23}, {0x1d167,0x1d169},
{0x1d17b,0x1d182}, {0x1d185,0x1d18b}, {0x1d1aa,0x1d1ad},
{0xe0100,0xe01ef},
};
static struct wchar_range comb_table[] = {
{0x0644,0x0622}, {0x0644,0x0623}, {0x0644,0x0625}, {0x0644,0x0627},
};
/*
* Characters with general category values
* Cc: Other, Control
* Cf: Other, Format
* Cs: Other, Surrogate
* Co: Other, Private Use
* Cn: Other, Not Assigned
* Zl: Separator, Line
* Zp: Separator, Paragraph
*/
static struct wchar_range ubin_table[] = {
{ 0x0000, 0x001f} /* Cc */, { 0x007f, 0x009f} /* Cc */,
#if 0
{ 0x00ad, 0x00ad} /* Cf */,
#endif
{ 0x0237, 0x024f} /* Cn */, { 0x0358, 0x035c} /* Cn */,
{ 0x0370, 0x0373} /* Cn */, { 0x0376, 0x0379} /* Cn */,
{ 0x037b, 0x037d} /* Cn */, { 0x037f, 0x0383} /* Cn */,
{ 0x038b, 0x038b} /* Cn */, { 0x038d, 0x038d} /* Cn */,
{ 0x03a2, 0x03a2} /* Cn */, { 0x03cf, 0x03cf} /* Cn */,
{ 0x03fc, 0x03ff} /* Cn */, { 0x0487, 0x0487} /* Cn */,
{ 0x04cf, 0x04cf} /* Cn */, { 0x04f6, 0x04f7} /* Cn */,
{ 0x04fa, 0x04ff} /* Cn */, { 0x0510, 0x0530} /* Cn */,
{ 0x0557, 0x0558} /* Cn */, { 0x0560, 0x0560} /* Cn */,
{ 0x0588, 0x0588} /* Cn */, { 0x058b, 0x0590} /* Cn */,
{ 0x05a2, 0x05a2} /* Cn */, { 0x05ba, 0x05ba} /* Cn */,
{ 0x05c5, 0x05cf} /* Cn */, { 0x05eb, 0x05ef} /* Cn */,
{ 0x05f5, 0x05ff} /* Cn */,
#if 0
{ 0x0600, 0x0603} /* Cf */,
#endif
{ 0x0604, 0x060b} /* Cn */, { 0x0616, 0x061a} /* Cn */,
{ 0x061c, 0x061e} /* Cn */, { 0x0620, 0x0620} /* Cn */,
{ 0x063b, 0x063f} /* Cn */, { 0x0659, 0x065f} /* Cn */,
#if 0
{ 0x06dd, 0x06dd} /* Cf */,
#endif
{ 0x070e, 0x070e} /* Cn */,
#if 0
{ 0x070f, 0x070f} /* Cf */,
#endif
{ 0x074b, 0x074c} /* Cn */, { 0x0750, 0x077f} /* Cn */,
{ 0x07b2, 0x0900} /* Cn */, { 0x093a, 0x093b} /* Cn */,
{ 0x094e, 0x094f} /* Cn */, { 0x0955, 0x0957} /* Cn */,
{ 0x0971, 0x0980} /* Cn */, { 0x0984, 0x0984} /* Cn */,
{ 0x098d, 0x098e} /* Cn */, { 0x0991, 0x0992} /* Cn */,
{ 0x09a9, 0x09a9} /* Cn */, { 0x09b1, 0x09b1} /* Cn */,
{ 0x09b3, 0x09b5} /* Cn */, { 0x09ba, 0x09bb} /* Cn */,
{ 0x09c5, 0x09c6} /* Cn */, { 0x09c9, 0x09ca} /* Cn */,
{ 0x09ce, 0x09d6} /* Cn */, { 0x09d8, 0x09db} /* Cn */,
{ 0x09de, 0x09de} /* Cn */, { 0x09e4, 0x09e5} /* Cn */,
{ 0x09fb, 0x0a00} /* Cn */, { 0x0a04, 0x0a04} /* Cn */,
{ 0x0a0b, 0x0a0e} /* Cn */, { 0x0a11, 0x0a12} /* Cn */,
{ 0x0a29, 0x0a29} /* Cn */, { 0x0a31, 0x0a31} /* Cn */,
{ 0x0a34, 0x0a34} /* Cn */, { 0x0a37, 0x0a37} /* Cn */,
{ 0x0a3a, 0x0a3b} /* Cn */, { 0x0a3d, 0x0a3d} /* Cn */,
{ 0x0a43, 0x0a46} /* Cn */, { 0x0a49, 0x0a4a} /* Cn */,
{ 0x0a4e, 0x0a58} /* Cn */, { 0x0a5d, 0x0a5d} /* Cn */,
{ 0x0a5f, 0x0a65} /* Cn */, { 0x0a75, 0x0a80} /* Cn */,
{ 0x0a84, 0x0a84} /* Cn */, { 0x0a8e, 0x0a8e} /* Cn */,
{ 0x0a92, 0x0a92} /* Cn */, { 0x0aa9, 0x0aa9} /* Cn */,
{ 0x0ab1, 0x0ab1} /* Cn */, { 0x0ab4, 0x0ab4} /* Cn */,
{ 0x0aba, 0x0abb} /* Cn */, { 0x0ac6, 0x0ac6} /* Cn */,
{ 0x0aca, 0x0aca} /* Cn */, { 0x0ace, 0x0acf} /* Cn */,
{ 0x0ad1, 0x0adf} /* Cn */, { 0x0ae4, 0x0ae5} /* Cn */,
{ 0x0af0, 0x0af0} /* Cn */, { 0x0af2, 0x0b00} /* Cn */,
{ 0x0b04, 0x0b04} /* Cn */, { 0x0b0d, 0x0b0e} /* Cn */,
{ 0x0b11, 0x0b12} /* Cn */, { 0x0b29, 0x0b29} /* Cn */,
{ 0x0b31, 0x0b31} /* Cn */, { 0x0b34, 0x0b34} /* Cn */,
{ 0x0b3a, 0x0b3b} /* Cn */, { 0x0b44, 0x0b46} /* Cn */,
{ 0x0b49, 0x0b4a} /* Cn */, { 0x0b4e, 0x0b55} /* Cn */,
{ 0x0b58, 0x0b5b} /* Cn */, { 0x0b5e, 0x0b5e} /* Cn */,
{ 0x0b62, 0x0b65} /* Cn */, { 0x0b72, 0x0b81} /* Cn */,
{ 0x0b84, 0x0b84} /* Cn */, { 0x0b8b, 0x0b8d} /* Cn */,
{ 0x0b91, 0x0b91} /* Cn */, { 0x0b96, 0x0b98} /* Cn */,
{ 0x0b9b, 0x0b9b} /* Cn */, { 0x0b9d, 0x0b9d} /* Cn */,
{ 0x0ba0, 0x0ba2} /* Cn */, { 0x0ba5, 0x0ba7} /* Cn */,
{ 0x0bab, 0x0bad} /* Cn */, { 0x0bb6, 0x0bb6} /* Cn */,
{ 0x0bba, 0x0bbd} /* Cn */, { 0x0bc3, 0x0bc5} /* Cn */,
{ 0x0bc9, 0x0bc9} /* Cn */, { 0x0bce, 0x0bd6} /* Cn */,
{ 0x0bd8, 0x0be6} /* Cn */, { 0x0bfb, 0x0c00} /* Cn */,
{ 0x0c04, 0x0c04} /* Cn */, { 0x0c0d, 0x0c0d} /* Cn */,
{ 0x0c11, 0x0c11} /* Cn */, { 0x0c29, 0x0c29} /* Cn */,
{ 0x0c34, 0x0c34} /* Cn */, { 0x0c3a, 0x0c3d} /* Cn */,
{ 0x0c45, 0x0c45} /* Cn */, { 0x0c49, 0x0c49} /* Cn */,
{ 0x0c4e, 0x0c54} /* Cn */, { 0x0c57, 0x0c5f} /* Cn */,
{ 0x0c62, 0x0c65} /* Cn */, { 0x0c70, 0x0c81} /* Cn */,
{ 0x0c84, 0x0c84} /* Cn */, { 0x0c8d, 0x0c8d} /* Cn */,
{ 0x0c91, 0x0c91} /* Cn */, { 0x0ca9, 0x0ca9} /* Cn */,
{ 0x0cb4, 0x0cb4} /* Cn */, { 0x0cba, 0x0cbb} /* Cn */,
{ 0x0cc5, 0x0cc5} /* Cn */, { 0x0cc9, 0x0cc9} /* Cn */,
{ 0x0cce, 0x0cd4} /* Cn */, { 0x0cd7, 0x0cdd} /* Cn */,
{ 0x0cdf, 0x0cdf} /* Cn */, { 0x0ce2, 0x0ce5} /* Cn */,
{ 0x0cf0, 0x0d01} /* Cn */, { 0x0d04, 0x0d04} /* Cn */,
{ 0x0d0d, 0x0d0d} /* Cn */, { 0x0d11, 0x0d11} /* Cn */,
{ 0x0d29, 0x0d29} /* Cn */, { 0x0d3a, 0x0d3d} /* Cn */,
{ 0x0d44, 0x0d45} /* Cn */, { 0x0d49, 0x0d49} /* Cn */,
{ 0x0d4e, 0x0d56} /* Cn */, { 0x0d58, 0x0d5f} /* Cn */,
{ 0x0d62, 0x0d65} /* Cn */, { 0x0d70, 0x0d81} /* Cn */,
{ 0x0d84, 0x0d84} /* Cn */, { 0x0d97, 0x0d99} /* Cn */,
{ 0x0db2, 0x0db2} /* Cn */, { 0x0dbc, 0x0dbc} /* Cn */,
{ 0x0dbe, 0x0dbf} /* Cn */, { 0x0dc7, 0x0dc9} /* Cn */,
{ 0x0dcb, 0x0dce} /* Cn */, { 0x0dd5, 0x0dd5} /* Cn */,
{ 0x0dd7, 0x0dd7} /* Cn */, { 0x0de0, 0x0df1} /* Cn */,
{ 0x0df5, 0x0e00} /* Cn */, { 0x0e3b, 0x0e3e} /* Cn */,
{ 0x0e5c, 0x0e80} /* Cn */, { 0x0e83, 0x0e83} /* Cn */,
{ 0x0e85, 0x0e86} /* Cn */, { 0x0e89, 0x0e89} /* Cn */,
{ 0x0e8b, 0x0e8c} /* Cn */, { 0x0e8e, 0x0e93} /* Cn */,
{ 0x0e98, 0x0e98} /* Cn */, { 0x0ea0, 0x0ea0} /* Cn */,
{ 0x0ea4, 0x0ea4} /* Cn */, { 0x0ea6, 0x0ea6} /* Cn */,
{ 0x0ea8, 0x0ea9} /* Cn */, { 0x0eac, 0x0eac} /* Cn */,
{ 0x0eba, 0x0eba} /* Cn */, { 0x0ebe, 0x0ebf} /* Cn */,
{ 0x0ec5, 0x0ec5} /* Cn */, { 0x0ec7, 0x0ec7} /* Cn */,
{ 0x0ece, 0x0ecf} /* Cn */, { 0x0eda, 0x0edb} /* Cn */,
{ 0x0ede, 0x0eff} /* Cn */, { 0x0f48, 0x0f48} /* Cn */,
{ 0x0f6b, 0x0f70} /* Cn */, { 0x0f8c, 0x0f8f} /* Cn */,
{ 0x0f98, 0x0f98} /* Cn */, { 0x0fbd, 0x0fbd} /* Cn */,
{ 0x0fcd, 0x0fce} /* Cn */, { 0x0fd0, 0x0fff} /* Cn */,
{ 0x1022, 0x1022} /* Cn */, { 0x1028, 0x1028} /* Cn */,
{ 0x102b, 0x102b} /* Cn */, { 0x1033, 0x1035} /* Cn */,
{ 0x103a, 0x103f} /* Cn */, { 0x105a, 0x109f} /* Cn */,
{ 0x10c6, 0x10cf} /* Cn */, { 0x10f9, 0x10fa} /* Cn */,
{ 0x10fc, 0x10ff} /* Cn */, { 0x115a, 0x115e} /* Cn */,
{ 0x11a3, 0x11a7} /* Cn */, { 0x11fa, 0x11ff} /* Cn */,
{ 0x1207, 0x1207} /* Cn */, { 0x1247, 0x1247} /* Cn */,
{ 0x1249, 0x1249} /* Cn */, { 0x124e, 0x124f} /* Cn */,
{ 0x1257, 0x1257} /* Cn */, { 0x1259, 0x1259} /* Cn */,
{ 0x125e, 0x125f} /* Cn */, { 0x1287, 0x1287} /* Cn */,
{ 0x1289, 0x1289} /* Cn */, { 0x128e, 0x128f} /* Cn */,
{ 0x12af, 0x12af} /* Cn */, { 0x12b1, 0x12b1} /* Cn */,
{ 0x12b6, 0x12b7} /* Cn */, { 0x12bf, 0x12bf} /* Cn */,
{ 0x12c1, 0x12c1} /* Cn */, { 0x12c6, 0x12c7} /* Cn */,
{ 0x12cf, 0x12cf} /* Cn */, { 0x12d7, 0x12d7} /* Cn */,
{ 0x12ef, 0x12ef} /* Cn */, { 0x130f, 0x130f} /* Cn */,
{ 0x1311, 0x1311} /* Cn */, { 0x1316, 0x1317} /* Cn */,
{ 0x131f, 0x131f} /* Cn */, { 0x1347, 0x1347} /* Cn */,
{ 0x135b, 0x1360} /* Cn */, { 0x137d, 0x139f} /* Cn */,
{ 0x13f5, 0x1400} /* Cn */, { 0x1677, 0x167f} /* Cn */,
{ 0x169d, 0x169f} /* Cn */, { 0x16f1, 0x16ff} /* Cn */,
{ 0x170d, 0x170d} /* Cn */, { 0x1715, 0x171f} /* Cn */,
{ 0x1737, 0x173f} /* Cn */, { 0x1754, 0x175f} /* Cn */,
{ 0x176d, 0x176d} /* Cn */, { 0x1771, 0x1771} /* Cn */,
{ 0x1774, 0x177f} /* Cn */,
#if 0
{ 0x17b4, 0x17b5} /* Cf */,
#endif
{ 0x17de, 0x17df} /* Cn */, { 0x17ea, 0x17ef} /* Cn */,
{ 0x17fa, 0x17ff} /* Cn */, { 0x180f, 0x180f} /* Cn */,
{ 0x181a, 0x181f} /* Cn */, { 0x1878, 0x187f} /* Cn */,
{ 0x18aa, 0x18ff} /* Cn */, { 0x191d, 0x191f} /* Cn */,
{ 0x192c, 0x192f} /* Cn */, { 0x193c, 0x193f} /* Cn */,
{ 0x1941, 0x1943} /* Cn */, { 0x196e, 0x196f} /* Cn */,
{ 0x1975, 0x19df} /* Cn */, { 0x1a00, 0x1cff} /* Cn */,
{ 0x1d6c, 0x1dff} /* Cn */, { 0x1e9c, 0x1e9f} /* Cn */,
{ 0x1efa, 0x1eff} /* Cn */, { 0x1f16, 0x1f17} /* Cn */,
{ 0x1f1e, 0x1f1f} /* Cn */, { 0x1f46, 0x1f47} /* Cn */,
{ 0x1f4e, 0x1f4f} /* Cn */, { 0x1f58, 0x1f58} /* Cn */,
{ 0x1f5a, 0x1f5a} /* Cn */, { 0x1f5c, 0x1f5c} /* Cn */,
{ 0x1f5e, 0x1f5e} /* Cn */, { 0x1f7e, 0x1f7f} /* Cn */,
{ 0x1fb5, 0x1fb5} /* Cn */, { 0x1fc5, 0x1fc5} /* Cn */,
{ 0x1fd4, 0x1fd5} /* Cn */, { 0x1fdc, 0x1fdc} /* Cn */,
{ 0x1ff0, 0x1ff1} /* Cn */, { 0x1ff5, 0x1ff5} /* Cn */,
{ 0x1fff, 0x1fff} /* Cn */, { 0x200b, 0x200f} /* Cf */,
{ 0x2028, 0x2028} /* Zl */,
{ 0x2029, 0x2029} /* Zp */,
{ 0x202a, 0x202e} /* Cf */,
{ 0x2055, 0x2056} /* Cn */, { 0x2058, 0x205e} /* Cn */,
{ 0x2060, 0x2063} /* Cf */,
{ 0x2064, 0x2069} /* Cn */,
{ 0x206a, 0x206f} /* Cf */,
{ 0x2072, 0x2073} /* Cn */, { 0x208f, 0x209f} /* Cn */,
{ 0x20b2, 0x20cf} /* Cn */, { 0x20eb, 0x20ff} /* Cn */,
{ 0x213c, 0x213c} /* Cn */, { 0x214c, 0x2152} /* Cn */,
{ 0x2184, 0x218f} /* Cn */, { 0x23d1, 0x23ff} /* Cn */,
{ 0x2427, 0x243f} /* Cn */, { 0x244b, 0x245f} /* Cn */,
{ 0x2618, 0x2618} /* Cn */, { 0x267e, 0x267f} /* Cn */,
{ 0x2692, 0x269f} /* Cn */, { 0x26a2, 0x2700} /* Cn */,
{ 0x2705, 0x2705} /* Cn */, { 0x270a, 0x270b} /* Cn */,
{ 0x2728, 0x2728} /* Cn */, { 0x274c, 0x274c} /* Cn */,
{ 0x274e, 0x274e} /* Cn */, { 0x2753, 0x2755} /* Cn */,
{ 0x2757, 0x2757} /* Cn */, { 0x275f, 0x2760} /* Cn */,
{ 0x2795, 0x2797} /* Cn */, { 0x27b0, 0x27b0} /* Cn */,
{ 0x27bf, 0x27cf} /* Cn */, { 0x27ec, 0x27ef} /* Cn */,
{ 0x2b0e, 0x2e7f} /* Cn */, { 0x2e9a, 0x2e9a} /* Cn */,
{ 0x2ef4, 0x2eff} /* Cn */, { 0x2fd6, 0x2fef} /* Cn */,
{ 0x2ffc, 0x2fff} /* Cn */, { 0x3040, 0x3040} /* Cn */,
{ 0x3097, 0x3098} /* Cn */, { 0x3100, 0x3104} /* Cn */,
{ 0x312d, 0x3130} /* Cn */, { 0x318f, 0x318f} /* Cn */,
{ 0x31b8, 0x31ef} /* Cn */, { 0x321f, 0x321f} /* Cn */,
{ 0x3244, 0x324f} /* Cn */, { 0x327e, 0x327e} /* Cn */,
{ 0x32ff, 0x32ff} /* Cn */, { 0x4db6, 0x4dbf} /* Cn */,
{ 0x9fa6, 0x9fff} /* Cn */, { 0xa48d, 0xa48f} /* Cn */,
{ 0xa4c7, 0xabff} /* Cn */, { 0xd7a4, 0xd7ff} /* Cn */,
{ 0xd800, 0xdfff} /* Cs */,
{ 0xe000, 0xf8ff} /* Co */,
{ 0xfa2e, 0xfa2f} /* Cn */, { 0xfa6b, 0xfaff} /* Cn */,
{ 0xfb07, 0xfb12} /* Cn */, { 0xfb18, 0xfb1c} /* Cn */,
{ 0xfb37, 0xfb37} /* Cn */, { 0xfb3d, 0xfb3d} /* Cn */,
{ 0xfb3f, 0xfb3f} /* Cn */, { 0xfb42, 0xfb42} /* Cn */,
{ 0xfb45, 0xfb45} /* Cn */, { 0xfbb2, 0xfbd2} /* Cn */,
{ 0xfd40, 0xfd4f} /* Cn */, { 0xfd90, 0xfd91} /* Cn */,
{ 0xfdc8, 0xfdef} /* Cn */, { 0xfdfe, 0xfdff} /* Cn */,
{ 0xfe10, 0xfe1f} /* Cn */, { 0xfe24, 0xfe2f} /* Cn */,
{ 0xfe53, 0xfe53} /* Cn */, { 0xfe67, 0xfe67} /* Cn */,
{ 0xfe6c, 0xfe6f} /* Cn */, { 0xfe75, 0xfe75} /* Cn */,
{ 0xfefd, 0xfefe} /* Cn */,
{ 0xfeff, 0xfeff} /* Cf */,
{ 0xff00, 0xff00} /* Cn */, { 0xffbf, 0xffc1} /* Cn */,
{ 0xffc8, 0xffc9} /* Cn */, { 0xffd0, 0xffd1} /* Cn */,
{ 0xffd8, 0xffd9} /* Cn */, { 0xffdd, 0xffdf} /* Cn */,
{ 0xffe7, 0xffe7} /* Cn */, { 0xffef, 0xfff8} /* Cn */,
{ 0xfff9, 0xfffb} /* Cf */,
{ 0xfffe, 0xffff} /* Cn */, { 0x1000c, 0x1000c} /* Cn */,
{ 0x10027, 0x10027} /* Cn */, { 0x1003b, 0x1003b} /* Cn */,
{ 0x1003e, 0x1003e} /* Cn */, { 0x1004e, 0x1004f} /* Cn */,
{ 0x1005e, 0x1007f} /* Cn */, { 0x100fb, 0x100ff} /* Cn */,
{ 0x10103, 0x10106} /* Cn */, { 0x10134, 0x10136} /* Cn */,
{ 0x10140, 0x102ff} /* Cn */, { 0x1031f, 0x1031f} /* Cn */,
{ 0x10324, 0x1032f} /* Cn */, { 0x1034b, 0x1037f} /* Cn */,
{ 0x1039e, 0x1039e} /* Cn */, { 0x103a0, 0x103ff} /* Cn */,
{ 0x1049e, 0x1049f} /* Cn */, { 0x104aa, 0x107ff} /* Cn */,
{ 0x10806, 0x10807} /* Cn */, { 0x10809, 0x10809} /* Cn */,
{ 0x10836, 0x10836} /* Cn */, { 0x10839, 0x1083b} /* Cn */,
{ 0x1083d, 0x1083e} /* Cn */, { 0x10840, 0x1cfff} /* Cn */,
{ 0x1d0f6, 0x1d0ff} /* Cn */, { 0x1d127, 0x1d129} /* Cn */,
{ 0x1d173, 0x1d17a} /* Cf */,
{ 0x1d1de, 0x1d2ff} /* Cn */, { 0x1d357, 0x1d3ff} /* Cn */,
{ 0x1d455, 0x1d455} /* Cn */, { 0x1d49d, 0x1d49d} /* Cn */,
{ 0x1d4a0, 0x1d4a1} /* Cn */, { 0x1d4a3, 0x1d4a4} /* Cn */,
{ 0x1d4a7, 0x1d4a8} /* Cn */, { 0x1d4ad, 0x1d4ad} /* Cn */,
{ 0x1d4ba, 0x1d4ba} /* Cn */, { 0x1d4bc, 0x1d4bc} /* Cn */,
{ 0x1d4c4, 0x1d4c4} /* Cn */, { 0x1d506, 0x1d506} /* Cn */,
{ 0x1d50b, 0x1d50c} /* Cn */, { 0x1d515, 0x1d515} /* Cn */,
{ 0x1d51d, 0x1d51d} /* Cn */, { 0x1d53a, 0x1d53a} /* Cn */,
{ 0x1d53f, 0x1d53f} /* Cn */, { 0x1d545, 0x1d545} /* Cn */,
{ 0x1d547, 0x1d549} /* Cn */, { 0x1d551, 0x1d551} /* Cn */,
{ 0x1d6a4, 0x1d6a7} /* Cn */, { 0x1d7ca, 0x1d7cd} /* Cn */,
{ 0x1d800, 0x1ffff} /* Cn */, { 0x2a6d7, 0x2f7ff} /* Cn */,
{ 0x2fa1e, 0xe0000} /* Cn */,
{ 0xe0001, 0xe0001} /* Cf */,
{ 0xe0002, 0xe001f} /* Cn */,
{ 0xe0020, 0xe007f} /* Cf */,
{ 0xe0080, 0xe00ff} /* Cn */, { 0xe01f0, 0xeffff} /* Cn */,
{ 0xf0000, 0xffffd} /* Co */,
{ 0xffffe, 0xfffff} /* Cn */,
{0x100000,0x10fffd} /* Co */,
{0x10fffe,0x10ffff} /* Cn */,
{0x110000,0x7fffffff} /* ISO 10646?? */
};
/*
* Double width characters
* W: East Asian Wide
* F: East Asian Full-width
*/
static struct wchar_range wide_table[] = {
{ 0x1100, 0x115f} /* W */, { 0x2329, 0x232a} /* W */,
{ 0x2E80, 0x2FFB} /* W */,
{ 0x3000, 0x3000} /* F */,
{ 0x3001, 0x303E} /* W */, { 0x3041, 0x4DB5} /* W */,
{ 0x4E00, 0x9FA5} /* W */, { 0xA000, 0xA4C6} /* W */,
{ 0xAC00, 0xD7A3} /* W */, { 0xF900, 0xFA6A} /* W */,
{ 0xFE30, 0xFE6B} /* W */,
{ 0xFF01, 0xFF60} /* F */, { 0xFFE0, 0xFFE6} /* F */,
{ 0x20000, 0x2FFFD} /* W */, { 0x30000, 0x3FFFD} /* W */,
};
static int
is_in_table(ch, table, tsize)
LWCHAR ch;
struct wchar_range table[];
int tsize;
{
int hi;
int lo;
/* Binary search in the table. */
if (ch < table[0].first)
return 0;
lo = 0;
hi = tsize - 1;
while (lo <= hi)
{
int mid = (lo + hi) / 2;
if (ch > table[mid].last)
lo = mid + 1;
else if (ch < table[mid].first)
hi = mid - 1;
else
return 1;
}
return 0;
}
/*
* Is a character a UTF-8 composing character?
* If a composing character follows any char, the two combine into one glyph.
*/
public int
is_composing_char(ch)
LWCHAR ch;
{
return is_in_table(ch, comp_table, (sizeof(comp_table) / sizeof(*comp_table)));
}
/*
* Should this UTF-8 character be treated as binary?
*/
public int
is_ubin_char(ch)
LWCHAR ch;
{
return is_in_table(ch, ubin_table, (sizeof(ubin_table) / sizeof(*ubin_table)));
}
/*
* Is this a double width UTF-8 character?
*/
public int
is_wide_char(ch)
LWCHAR ch;
{
return is_in_table(ch, wide_table, (sizeof(wide_table) / sizeof(*wide_table)));
}
/*
* Is a character a UTF-8 combining character?
* A combining char acts like an ordinary char, but if it follows
* a specific char (not any char), the two combine into one glyph.
*/
public int
is_combining_char(ch1, ch2)
LWCHAR ch1;
LWCHAR ch2;
{
/* The table is small; use linear search. */
int i;
for (i = 0; i < sizeof(comb_table)/sizeof(*comb_table); i++)
{
if (ch1 == comb_table[i].first &&
ch2 == comb_table[i].last)
return 1;
}
return 0;
}
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