592 lines
16 KiB
C
592 lines
16 KiB
C
/* CPP Library - charsets
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003
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Free Software Foundation, Inc.
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Broken out of c-lex.c Apr 2003, adding valid C99 UCN ranges.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "cpplib.h"
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#include "cpphash.h"
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static int ucn_valid_in_identifier PARAMS ((cpp_reader *, cppchar_t));
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/* [lex.charset]: The character designated by the universal character
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name \UNNNNNNNN is that character whose character short name in
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ISO/IEC 10646 is NNNNNNNN; the character designated by the
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universal character name \uNNNN is that character whose character
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short name in ISO/IEC 10646 is 0000NNNN. If the hexadecimal value
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for a universal character name is less than 0x20 or in the range
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0x7F-0x9F (inclusive), or if the universal character name
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designates a character in the basic source character set, then the
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program is ill-formed.
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*PSTR must be preceded by "\u" or "\U"; it is assumed that the
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buffer end is delimited by a non-hex digit. Returns zero if UCNs
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are not part of the relevant standard, or if the string beginning
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at *PSTR doesn't syntactically match the form 'NNNN' or 'NNNNNNNN'.
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Otherwise the non-zero value of the UCN, whether valid or invalid,
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is returned. Diagnostics are emitted for invalid values. PSTR
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is updated to point one beyond the UCN, or to the syntactically
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invalid character.
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IDENTIFIER_POS is 0 when not in an identifier, 1 for the start of
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an identifier, or 2 otherwise.
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*/
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cppchar_t
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_cpp_valid_ucn (pfile, pstr, identifier_pos)
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cpp_reader *pfile;
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const uchar **pstr;
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int identifier_pos;
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{
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cppchar_t result, c;
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unsigned int length;
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const uchar *str = *pstr;
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const uchar *base = str - 2;
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/* Only attempt to interpret a UCS for C++ and C99. */
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if (!CPP_OPTION (pfile, cplusplus) && !CPP_OPTION (pfile, c99))
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return 0;
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/* We don't accept UCNs for an EBCDIC target. */
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if (CPP_OPTION (pfile, EBCDIC))
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return 0;
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if (str[-1] == 'u')
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length = 4;
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else if (str[-1] == 'U')
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length = 8;
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else
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abort();
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result = 0;
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do
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{
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c = *str;
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if (!ISXDIGIT (c))
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break;
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str++;
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result = (result << 4) + hex_value (c);
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}
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while (--length);
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*pstr = str;
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if (length)
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/* We'll error when we try it out as the start of an identifier. */
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cpp_error (pfile, DL_ERROR, "incomplete universal character name %.*s",
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(int) (str - base), base);
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/* The standard permits $, @ and ` to be specified as UCNs. We use
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hex escapes so that this also works with EBCDIC hosts. */
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else if ((result < 0xa0
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&& (result != 0x24 && result != 0x40 && result != 0x60))
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|| (result & 0x80000000)
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|| (result >= 0xD800 && result <= 0xDFFF))
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{
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cpp_error (pfile, DL_ERROR, "%.*s is not a valid universal character",
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(int) (str - base), base);
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}
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else if (identifier_pos)
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{
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int validity = ucn_valid_in_identifier (pfile, result);
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if (validity == 0)
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cpp_error (pfile, DL_ERROR,
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"universal character %.*s is not valid in an identifier",
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(int) (str - base), base);
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else if (validity == 2 && identifier_pos == 1)
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cpp_error (pfile, DL_ERROR,
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"universal character %.*s is not valid at the start of an identifier",
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(int) (str - base), base);
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}
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if (result == 0)
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result = 1;
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return result;
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}
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/* Returns 1 if C is valid in an identifier, 2 if C is valid except at
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the start of an identifier, and 0 if C is not valid in an
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identifier. We assume C has already gone through the checks of
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_cpp_valid_ucn. */
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static int
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ucn_valid_in_identifier (pfile, c)
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cpp_reader *pfile;
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cppchar_t c;
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{
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/* None of the valid chars are outside the Basic Multilingual Plane (the
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low 16 bits). */
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if (c > 0xffff)
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return 0;
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if (CPP_OPTION (pfile, c99) || !CPP_PEDANTIC (pfile))
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{
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/* Latin. */
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if (c == 0x0aa || c == 0x00ba || c == 0x207f || c == 0x1e9b)
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return 1;
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/* Greek. */
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if (c == 0x0386)
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return 1;
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/* Cyrillic. */
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if (c == 0x040c)
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return 1;
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/* Hebrew. */
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if ((c >= 0x05b0 && c <= 0x05b9)
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|| (c >= 0x05bb && c <= 0x005bd)
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|| c == 0x05bf
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|| (c >= 0x05c1 && c <= 0x05c2))
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return 1;
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/* Arabic. */
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if ((c >= 0x06d0 && c <= 0x06dc)
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|| c == 0x06e8
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|| (c >= 0x06ea && c <= 0x06ed))
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return 1;
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/* Devanagari */
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if ((c >= 0x0901 && c <= 0x0903)
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|| (c >= 0x093e && c <= 0x094d)
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|| (c >= 0x0950 && c <= 0x0952)
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|| c == 0x0963)
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return 1;
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/* Bengali */
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if ((c >= 0x0981 && c <= 0x0983)
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|| (c >= 0x09be && c <= 0x09c4)
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|| (c >= 0x09c7 && c <= 0x09c8)
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|| (c >= 0x09cb && c <= 0x09cd)
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|| (c >= 0x09e2 && c <= 0x09e3))
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return 1;
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/* Gurmukhi */
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if (c == 0x0a02
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|| (c >= 0x0a3e && c <= 0x0a42)
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|| (c >= 0x0a47 && c <= 0x0a48)
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|| (c >= 0x0a4b && c <= 0x0a4d)
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|| (c == 0x0a74))
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return 1;
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/* Gujarati */
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if ((c >= 0x0a81 && c <= 0x0a83)
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|| (c >= 0x0abd && c <= 0x0ac5)
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|| (c >= 0x0ac7 && c <= 0x0ac9)
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|| (c >= 0x0acb && c <= 0x0acd)
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|| (c == 0x0ad0))
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return 1;
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/* Oriya */
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if ((c >= 0x0b01 && c <= 0x0b03)
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|| (c >= 0x0b3e && c <= 0x0b43)
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|| (c >= 0x0b47 && c <= 0x0b48)
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|| (c >= 0x0b4b && c <= 0x0b4d))
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return 1;
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/* Tamil */
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if ((c >= 0x0b82 && c <= 0x0b83)
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|| (c >= 0x0bbe && c <= 0x0bc2)
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|| (c >= 0x0bc6 && c <= 0x0bc8)
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|| (c >= 0x0bc8 && c <= 0x0bcd))
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return 1;
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/* Telugu */
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if ((c >= 0x0c01 && c <= 0x0c03)
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|| (c >= 0x0c3e && c <= 0x0c44)
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|| (c >= 0x0c46 && c <= 0x0c48)
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|| (c >= 0x0c4a && c <= 0x0c4d))
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return 1;
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/* Kannada */
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if ((c >= 0x0c82 && c <= 0x0c83)
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|| (c >= 0x0cbe && c <= 0x0cc4)
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|| (c >= 0x0cc6 && c <= 0x0cc8)
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|| (c >= 0x0cca && c <= 0x0ccd)
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|| c == 0x0cde)
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return 1;
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/* Malayalam */
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if ((c >= 0x0d02 && c <= 0x0d03)
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|| (c >= 0x0d3e && c <= 0x0d43)
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|| (c >= 0x0d46 && c <= 0x0d48)
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|| (c >= 0x0d4a && c <= 0x0d4d))
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return 1;
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/* Thai */
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if ((c >= 0x0e01 && c <= 0x0e3a)
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|| (c >= 0x0e40 && c <= 0x0e5b))
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return 1;
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/* Lao */
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if ((c >= 0x0ead && c <= 0x0eae)
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|| (c >= 0x0eb0 && c <= 0x0eb9)
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|| (c >= 0x0ebb && c <= 0x0ebd)
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|| (c >= 0x0ec0 && c <= 0x0ec4)
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|| c == 0x0ec6
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|| (c >= 0x0ec8 && c <= 0x0ecd)
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|| (c >= 0x0edc && c <= 0x0ed))
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return 1;
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/* Tibetan. */
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if (c == 0x0f00
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|| (c >= 0x0f18 && c <= 0x0f19)
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|| c == 0x0f35
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|| c == 0x0f37
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|| c == 0x0f39
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|| (c >= 0x0f3e && c <= 0x0f47)
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|| (c >= 0x0f49 && c <= 0x0f69)
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|| (c >= 0x0f71 && c <= 0x0f84)
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|| (c >= 0x0f86 && c <= 0x0f8b)
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|| (c >= 0x0f90 && c <= 0x0f95)
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|| c == 0x0f97
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|| (c >= 0x0f99 && c <= 0x0fad)
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|| (c >= 0x0fb1 && c <= 0x0fb7)
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|| c == 0x0fb9)
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return 1;
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/* Katakana */
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if ((c >= 0x30a1 && c <= 0x30f6)
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|| (c >= 0x30fb && c <= 0x30fc))
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return 1;
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/* CJK Unified Ideographs. */
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if (c >= 0x4e00 && c <= 0x9fa5)
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return 1;
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/* Hangul. */
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if (c >= 0xac00 && c <= 0xd7a3)
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return 1;
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/* Digits. */
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if ((c >= 0x0660 && c <= 0x0669)
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|| (c >= 0x06f0 && c <= 0x06f9)
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|| (c >= 0x0966 && c <= 0x096f)
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|| (c >= 0x09e6 && c <= 0x09ef)
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|| (c >= 0x0a66 && c <= 0x0a6f)
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|| (c >= 0x0ae6 && c <= 0x0aef)
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|| (c >= 0x0b66 && c <= 0x0b6f)
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|| (c >= 0x0be7 && c <= 0x0bef)
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|| (c >= 0x0c66 && c <= 0x0c6f)
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|| (c >= 0x0ce6 && c <= 0x0cef)
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|| (c >= 0x0d66 && c <= 0x0d6f)
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|| (c >= 0x0e50 && c <= 0x0e59)
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|| (c >= 0x0ed0 && c <= 0x0ed9)
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|| (c >= 0x0f20 && c <= 0x0f33))
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return 2;
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/* Special characters. */
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if (c == 0x00b5
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|| c == 0x00b7
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|| (c >= 0x02b0 && c <= 0x02b8)
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|| c == 0x02bb
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|| (c >= 0x02bd && c <= 0x02c1)
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|| (c >= 0x02d0 && c <= 0x02d1)
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|| (c >= 0x02e0 && c <= 0x02e4)
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|| c == 0x037a
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|| c == 0x0559
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|| c == 0x093d
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|| c == 0x0b3d
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|| c == 0x1fbe
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|| (c >= 0x203f && c <= 0x2040)
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|| c == 0x2102
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|| c == 0x2107
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|| (c >= 0x210a && c <= 0x2113)
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|| c == 0x2115
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|| (c >= 0x2118 && c <= 0x211d)
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|| c == 0x2124
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|| c == 0x2126
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|| c == 0x2128
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|| (c >= 0x212a && c <= 0x2131)
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|| (c >= 0x2133 && c <= 0x2138)
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|| (c >= 0x2160 && c <= 0x2182)
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|| (c >= 0x3005 && c <= 0x3007)
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|| (c >= 0x3021 && c <= 0x3029))
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return 1;
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}
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if (CPP_OPTION (pfile, cplusplus) || !CPP_PEDANTIC (pfile))
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{
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/* Greek. */
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if (c == 0x0384)
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return 1;
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/* Cyrillic. */
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if (c == 0x040d)
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return 1;
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/* Hebrew. */
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if (c >= 0x05f3 && c <= 0x05f4)
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return 1;
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/* Lao. */
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if ((c >= 0x0ead && c <= 0x0eb0)
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|| (c == 0x0eb2)
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|| (c == 0x0eb3)
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|| (c == 0x0ebd)
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|| (c >= 0x0ec0 && c <= 0x0ec4)
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|| (c == 0x0ec6))
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return 1;
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/* Hiragana */
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if (c == 0x3094
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|| (c >= 0x309d && c <= 0x309e))
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return 1;
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/* Katakana */
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if ((c >= 0x30a1 && c <= 0x30fe))
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return 1;
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/* Hangul */
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if ((c >= 0x1100 && c <= 0x1159)
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|| (c >= 0x1161 && c <= 0x11a2)
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|| (c >= 0x11a8 && c <= 0x11f9))
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return 1;
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/* CJK Unified Ideographs */
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if ((c >= 0xf900 && c <= 0xfa2d)
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|| (c >= 0xfb1f && c <= 0xfb36)
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|| (c >= 0xfb38 && c <= 0xfb3c)
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|| (c == 0xfb3e)
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|| (c >= 0xfb40 && c <= 0xfb41)
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|| (c >= 0xfb42 && c <= 0xfb44)
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|| (c >= 0xfb46 && c <= 0xfbb1)
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|| (c >= 0xfbd3 && c <= 0xfd3f)
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|| (c >= 0xfd50 && c <= 0xfd8f)
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|| (c >= 0xfd92 && c <= 0xfdc7)
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|| (c >= 0xfdf0 && c <= 0xfdfb)
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|| (c >= 0xfe70 && c <= 0xfe72)
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|| (c == 0xfe74)
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|| (c >= 0xfe76 && c <= 0xfefc)
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|| (c >= 0xff21 && c <= 0xff3a)
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|| (c >= 0xff41 && c <= 0xff5a)
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|| (c >= 0xff66 && c <= 0xffbe)
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|| (c >= 0xffc2 && c <= 0xffc7)
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|| (c >= 0xffca && c <= 0xffcf)
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|| (c >= 0xffd2 && c <= 0xffd7)
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|| (c >= 0xffda && c <= 0xffdc)
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|| (c >= 0x4e00 && c <= 0x9fa5))
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return 1;
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}
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/* Latin */
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if ((c >= 0x00c0 && c <= 0x00d6)
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|| (c >= 0x00d8 && c <= 0x00f6)
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|| (c >= 0x00f8 && c <= 0x01f5)
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|| (c >= 0x01fa && c <= 0x0217)
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|| (c >= 0x0250 && c <= 0x02a8)
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|| (c >= 0x1e00 && c <= 0x1e9a)
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|| (c >= 0x1ea0 && c <= 0x1ef9))
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return 1;
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/* Greek */
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if ((c >= 0x0388 && c <= 0x038a)
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|| (c == 0x038c)
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|| (c >= 0x038e && c <= 0x03a1)
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|| (c >= 0x03a3 && c <= 0x03ce)
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|| (c >= 0x03d0 && c <= 0x03d6)
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|| (c == 0x03da)
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|| (c == 0x03dc)
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|| (c == 0x03de)
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|| (c == 0x03e0)
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|| (c >= 0x03e2 && c <= 0x03f3)
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|| (c >= 0x1f00 && c <= 0x1f15)
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|| (c >= 0x1f18 && c <= 0x1f1d)
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|| (c >= 0x1f20 && c <= 0x1f45)
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|| (c >= 0x1f48 && c <= 0x1f4d)
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|| (c >= 0x1f50 && c <= 0x1f57)
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|| (c == 0x1f59)
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|| (c == 0x1f5b)
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|| (c == 0x1f5d)
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|| (c >= 0x1f5f && c <= 0x1f7d)
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|| (c >= 0x1f80 && c <= 0x1fb4)
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|| (c >= 0x1fb6 && c <= 0x1fbc)
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|| (c >= 0x1fc2 && c <= 0x1fc4)
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|| (c >= 0x1fc6 && c <= 0x1fcc)
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|| (c >= 0x1fd0 && c <= 0x1fd3)
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|| (c >= 0x1fd6 && c <= 0x1fdb)
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|| (c >= 0x1fe0 && c <= 0x1fec)
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|| (c >= 0x1ff2 && c <= 0x1ff4)
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|| (c >= 0x1ff6 && c <= 0x1ffc))
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return 1;
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/* Cyrillic */
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if ((c >= 0x0401 && c <= 0x040c)
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|| (c >= 0x040f && c <= 0x044f)
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|| (c >= 0x0451 && c <= 0x045c)
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|| (c >= 0x045e && c <= 0x0481)
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|| (c >= 0x0490 && c <= 0x04c4)
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|| (c >= 0x04c7 && c <= 0x04c8)
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|| (c >= 0x04cb && c <= 0x04cc)
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|| (c >= 0x04d0 && c <= 0x04eb)
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|| (c >= 0x04ee && c <= 0x04f5)
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|| (c >= 0x04f8 && c <= 0x04f9))
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return 1;
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/* Armenian */
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if ((c >= 0x0531 && c <= 0x0556)
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|| (c >= 0x0561 && c <= 0x0587))
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return 1;
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/* Hebrew */
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if ((c >= 0x05d0 && c <= 0x05ea)
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|| (c >= 0x05f0 && c <= 0x05f2))
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return 1;
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/* Arabic */
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if ((c >= 0x0621 && c <= 0x063a)
|
|
|| (c >= 0x0640 && c <= 0x0652)
|
|
|| (c >= 0x0670 && c <= 0x06b7)
|
|
|| (c >= 0x06ba && c <= 0x06be)
|
|
|| (c >= 0x06c0 && c <= 0x06ce)
|
|
|| (c >= 0x06e5 && c <= 0x06e7))
|
|
return 1;
|
|
|
|
/* Devanagari */
|
|
if ((c >= 0x0905 && c <= 0x0939)
|
|
|| (c >= 0x0958 && c <= 0x0962))
|
|
return 1;
|
|
|
|
/* Bengali */
|
|
if ((c >= 0x0985 && c <= 0x098c)
|
|
|| (c >= 0x098f && c <= 0x0990)
|
|
|| (c >= 0x0993 && c <= 0x09a8)
|
|
|| (c >= 0x09aa && c <= 0x09b0)
|
|
|| (c == 0x09b2)
|
|
|| (c >= 0x09b6 && c <= 0x09b9)
|
|
|| (c >= 0x09dc && c <= 0x09dd)
|
|
|| (c >= 0x09df && c <= 0x09e1)
|
|
|| (c >= 0x09f0 && c <= 0x09f1))
|
|
return 1;
|
|
|
|
/* Gurmukhi */
|
|
if ((c >= 0x0a05 && c <= 0x0a0a)
|
|
|| (c >= 0x0a0f && c <= 0x0a10)
|
|
|| (c >= 0x0a13 && c <= 0x0a28)
|
|
|| (c >= 0x0a2a && c <= 0x0a30)
|
|
|| (c >= 0x0a32 && c <= 0x0a33)
|
|
|| (c >= 0x0a35 && c <= 0x0a36)
|
|
|| (c >= 0x0a38 && c <= 0x0a39)
|
|
|| (c >= 0x0a59 && c <= 0x0a5c)
|
|
|| (c == 0x0a5e))
|
|
return 1;
|
|
|
|
/* Gujarati */
|
|
if ((c >= 0x0a85 && c <= 0x0a8b)
|
|
|| (c == 0x0a8d)
|
|
|| (c >= 0x0a8f && c <= 0x0a91)
|
|
|| (c >= 0x0a93 && c <= 0x0aa8)
|
|
|| (c >= 0x0aaa && c <= 0x0ab0)
|
|
|| (c >= 0x0ab2 && c <= 0x0ab3)
|
|
|| (c >= 0x0ab5 && c <= 0x0ab9)
|
|
|| (c == 0x0ae0))
|
|
return 1;
|
|
|
|
/* Oriya */
|
|
if ((c >= 0x0b05 && c <= 0x0b0c)
|
|
|| (c >= 0x0b0f && c <= 0x0b10)
|
|
|| (c >= 0x0b13 && c <= 0x0b28)
|
|
|| (c >= 0x0b2a && c <= 0x0b30)
|
|
|| (c >= 0x0b32 && c <= 0x0b33)
|
|
|| (c >= 0x0b36 && c <= 0x0b39)
|
|
|| (c >= 0x0b5c && c <= 0x0b5d)
|
|
|| (c >= 0x0b5f && c <= 0x0b61))
|
|
return 1;
|
|
|
|
/* Tamil */
|
|
if ((c >= 0x0b85 && c <= 0x0b8a)
|
|
|| (c >= 0x0b8e && c <= 0x0b90)
|
|
|| (c >= 0x0b92 && c <= 0x0b95)
|
|
|| (c >= 0x0b99 && c <= 0x0b9a)
|
|
|| (c == 0x0b9c)
|
|
|| (c >= 0x0b9e && c <= 0x0b9f)
|
|
|| (c >= 0x0ba3 && c <= 0x0ba4)
|
|
|| (c >= 0x0ba8 && c <= 0x0baa)
|
|
|| (c >= 0x0bae && c <= 0x0bb5)
|
|
|| (c >= 0x0bb7 && c <= 0x0bb9))
|
|
return 1;
|
|
|
|
/* Telugu */
|
|
if ((c >= 0x0c05 && c <= 0x0c0c)
|
|
|| (c >= 0x0c0e && c <= 0x0c10)
|
|
|| (c >= 0x0c12 && c <= 0x0c28)
|
|
|| (c >= 0x0c2a && c <= 0x0c33)
|
|
|| (c >= 0x0c35 && c <= 0x0c39)
|
|
|| (c >= 0x0c60 && c <= 0x0c61))
|
|
return 1;
|
|
|
|
/* Kannada */
|
|
if ((c >= 0x0c85 && c <= 0x0c8c)
|
|
|| (c >= 0x0c8e && c <= 0x0c90)
|
|
|| (c >= 0x0c92 && c <= 0x0ca8)
|
|
|| (c >= 0x0caa && c <= 0x0cb3)
|
|
|| (c >= 0x0cb5 && c <= 0x0cb9)
|
|
|| (c >= 0x0ce0 && c <= 0x0ce1))
|
|
return 1;
|
|
|
|
/* Malayalam */
|
|
if ((c >= 0x0d05 && c <= 0x0d0c)
|
|
|| (c >= 0x0d0e && c <= 0x0d10)
|
|
|| (c >= 0x0d12 && c <= 0x0d28)
|
|
|| (c >= 0x0d2a && c <= 0x0d39)
|
|
|| (c >= 0x0d60 && c <= 0x0d61))
|
|
return 1;
|
|
|
|
/* Thai */
|
|
if ((c >= 0x0e01 && c <= 0x0e30)
|
|
|| (c >= 0x0e32 && c <= 0x0e33)
|
|
|| (c >= 0x0e40 && c <= 0x0e46)
|
|
|| (c >= 0x0e4f && c <= 0x0e5b))
|
|
return 1;
|
|
|
|
/* Lao */
|
|
if ((c >= 0x0e81 && c <= 0x0e82)
|
|
|| (c == 0x0e84)
|
|
|| (c == 0x0e87)
|
|
|| (c == 0x0e88)
|
|
|| (c == 0x0e8a)
|
|
|| (c == 0x0e8d)
|
|
|| (c >= 0x0e94 && c <= 0x0e97)
|
|
|| (c >= 0x0e99 && c <= 0x0e9f)
|
|
|| (c >= 0x0ea1 && c <= 0x0ea3)
|
|
|| (c == 0x0ea5)
|
|
|| (c == 0x0ea7)
|
|
|| (c == 0x0eaa)
|
|
|| (c == 0x0eab))
|
|
return 1;
|
|
|
|
/* Georgian */
|
|
if ((c >= 0x10a0 && c <= 0x10c5)
|
|
|| (c >= 0x10d0 && c <= 0x10f6))
|
|
return 1;
|
|
|
|
/* Hiragana */
|
|
if ((c >= 0x3041 && c <= 0x3093)
|
|
|| (c >= 0x309b && c <= 0x309c))
|
|
return 1;
|
|
|
|
/* Bopmofo */
|
|
if ((c >= 0x3105 && c <= 0x312c))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|