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t_ctype.h：源码内容
							/* Copyright (C) 2000 MySQL AB
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
/*
  Copyright (C) 1998, 1999 by Pruet Boonma, all rights reserved.
  Copyright (C) 1998 by Theppitak Karoonboonyanan, all rights reserved.
  Permission to use, copy, modify, distribute and sell this software
   and its documentation for any purpose is hereby granted without fee,
   provided that the above copyright notice appear in all copies.
   Smaphan Raruenrom and Pruet Boonma makes no representations about 
   the suitability of this software for any purpose.  It is provided
    "as is" without express or implied warranty.
*/
/*
  LC_COLLATE category + Level information
*/
#ifndef _t_ctype_h
#define _t_ctype_h
typedef unsigned char tchar;
#define TOT_LEVELS 5
#define LAST_LEVEL 4  /* TOT_LEVELS - 1 */
#define IGNORE 0
/* level 1 symbols & order */
enum l1_symbols {
    L1_08 = TOT_LEVELS,
    L1_18,
    L1_28,
    L1_38,
    L1_48,
    L1_58,
    L1_68,
    L1_78,
    L1_88,
    L1_98,
    L1_A8,
    L1_B8,
    L1_C8,
    L1_D8,
    L1_E8,
    L1_F8,
    L1_G8,
    L1_H8,
    L1_I8,
    L1_J8,
    L1_K8,
    L1_L8,
    L1_M8,
    L1_N8,
    L1_O8,
    L1_P8,
    L1_Q8,
    L1_R8,
    L1_S8,
    L1_T8,
    L1_U8,
    L1_V8,
    L1_W8,
    L1_X8,
    L1_Y8,
    L1_Z8,
    L1_KO_KAI,
    L1_KHO_KHAI,
    L1_KHO_KHUAT,
    L1_KHO_KHWAI,
    L1_KHO_KHON,
    L1_KHO_RAKHANG,
    L1_NGO_NGU,
    L1_CHO_CHAN,
    L1_CHO_CHING,
    L1_CHO_CHANG,
    L1_SO_SO,
    L1_CHO_CHOE,
    L1_YO_YING,
    L1_DO_CHADA,
    L1_TO_PATAK,
    L1_THO_THAN,
    L1_THO_NANGMONTHO,
    L1_THO_PHUTHAO,
    L1_NO_NEN,
    L1_DO_DEK,
    L1_TO_TAO,
    L1_THO_THUNG,
    L1_THO_THAHAN,
    L1_THO_THONG,
    L1_NO_NU,
    L1_BO_BAIMAI,
    L1_PO_PLA,
    L1_PHO_PHUNG,
    L1_FO_FA,
    L1_PHO_PHAN,
    L1_FO_FAN,
    L1_PHO_SAMPHAO,
    L1_MO_MA,
    L1_YO_YAK,
    L1_RO_RUA,
    L1_RU,
    L1_LO_LING,
    L1_LU,
    L1_WO_WAEN,
    L1_SO_SALA,
    L1_SO_RUSI,
    L1_SO_SUA,
    L1_HO_HIP,
    L1_LO_CHULA,
    L1_O_ANG,
    L1_HO_NOKHUK,
    L1_NKHIT,
    L1_SARA_A,
    L1_MAI_HAN_AKAT,
    L1_SARA_AA,
    L1_SARA_AM,
    L1_SARA_I,
    L1_SARA_II,
    L1_SARA_UE,
    L1_SARA_UEE,
    L1_SARA_U,
    L1_SARA_UU,
    L1_SARA_E,
    L1_SARA_AE,
    L1_SARA_O,
    L1_SARA_AI_MAIMUAN,
    L1_SARA_AI_MAIMALAI
};
/* level 2 symbols & order */
enum l2_symbols {
    L2_BLANK = TOT_LEVELS,
    L2_THAII,
    L2_YAMAK,
    L2_PINTHU,
    L2_GARAN,
    L2_TYKHU,
    L2_TONE1,
    L2_TONE2,
    L2_TONE3,
    L2_TONE4
};
/* level 3 symbols & order */
enum l3_symbols {
	L3_BLANK = TOT_LEVELS,
    L3_SPACE,
    L3_NB_SACE,
    L3_LOW_LINE,
    L3_HYPHEN,
    L3_COMMA,
    L3_SEMICOLON,
    L3_COLON,
    L3_EXCLAMATION,
    L3_QUESTION,
    L3_SOLIDUS,
    L3_FULL_STOP,
    L3_PAIYAN_NOI,
    L3_MAI_YAMOK,
    L3_GRAVE,
    L3_CIRCUMFLEX,
    L3_TILDE,
    L3_APOSTROPHE,
    L3_QUOTATION,
    L3_L_PARANTHESIS,
    L3_L_BRACKET,
    L3_L_BRACE,
    L3_R_BRACE,
    L3_R_BRACKET,
    L3_R_PARENTHESIS,
    L3_AT,
    L3_BAHT,
    L3_DOLLAR,
    L3_FONGMAN,
    L3_ANGKHANKHU,
    L3_KHOMUT,
    L3_ASTERISK,
    L3_BK_SOLIDUS,
    L3_AMPERSAND,
    L3_NUMBER,
    L3_PERCENT,
    L3_PLUS,
    L3_LESS_THAN,
    L3_EQUAL,
    L3_GREATER_THAN,
    L3_V_LINE
};
/* level 4 symbols & order */
enum l4_symbols {
    L4_BLANK = TOT_LEVELS,
    L4_MIN,
    L4_CAP,
    L4_EXT
};
enum level_symbols {
    L_UPRUPR = TOT_LEVELS,
    L_UPPER,
    L_MIDDLE,
    L_LOWER
};
#define	_is(c)			(t_ctype[(c)][LAST_LEVEL])
#define _level			8
#define _consnt			16
#define _ldvowel		32
#define _fllwvowel		64
#define _uprvowel		128
#define _lwrvowel		256
#define _tone			512
#define _diacrt1		1024
#define _diacrt2		2048
#define _combine		4096
#define _stone			8192
#define _tdig			16384
#define _rearvowel		(_fllwvowel | _uprvowel | _lwrvowel)
#define _diacrt			(_diacrt1 | _diacrt2)
#define levelof(c)		( _is(c) & _level )
#define isthai(c)		( (c) >= 128 )
#define istalpha(c)		( _is(c) & (_consnt|_ldvowel|_rearvowel|
                         _tone|_diacrt1|_diacrt2) )
#define isconsnt(c)		( _is(c) & _consnt )
#define isldvowel(c)	( _is(c) & _ldvowel )
#define isfllwvowel(c)	( _is(c) & _fllwvowel )
#define ismidvowel(c)	( _is(c) & (_ldvowel|_fllwvowel) )
#define isuprvowel(c)	( _is(c) & _uprvowel )
#define islwrvowel(c)	( _is(c) & _lwrvowel )
#define isuprlwrvowel(c) ( _is(c) & (_lwrvowel | _uprvowel))
#define isrearvowel(c)	( _is(c) & _rearvowel )
#define isvowel(c)      ( _is(c) & (_ldvowel|_rearvowel) )
#define istone(c)       ( _is(c) & _tone )
#define isunldable(c)   ( _is(c) & (_rearvowel|_tone|_diacrt1|_diacrt2) )
#define iscombinable(c) ( _is(c) & _combine )
#define istdigit(c)     ( _is(c) & _tdig )
#define isstone(c)      ( _is(c) & _stone )
#define isdiacrt1(c)	( _is(c) & _diacrt1)
#define isdiacrt2(c)	( _is(c) & _diacrt2)
#define isdiacrt(c)		( _is(c) & _diacrt) 
/* Function prototype called by sql/field.cc */
void ThNormalize(uchar* ptr, uint field_length, const uchar* from, uint length);
#endif  

						