/*
 * character macros
 */
extern const unsigned char ToLowerTab[];
#define ToLower(c) (ToLowerTab[(unsigned char)(c)])

extern const unsigned char ToUpperTab[];
#define ToUpper(c) (ToUpperTab[(unsigned char)(c)])

extern const unsigned int CharAttrs[];

#define PRINT_C   0x001
#define CNTRL_C   0x002
#define ALPHA_C   0x004
#define PUNCT_C   0x008
#define DIGIT_C   0x010
#define SPACE_C   0x020
#define NICK_C    0x040
#define CHAN_C    0x080
#define KWILD_C   0x100
#define CHANPFX_C 0x200
#define USER_C    0x400
#define HOST_C    0x800
#define NONEOS_C 0x1000
#define SERV_C   0x2000
#define EOL_C    0x4000
#define MWILD_C  0x8000
#define LET_C   0x10000 /* an actual letter */
#define FCHAN_C 0x20000 /* a 'fake' channel char */

#define IsHostChar(c)   (CharAttrs[(unsigned char)(c)] & HOST_C)
#define IsUserChar(c)   (CharAttrs[(unsigned char)(c)] & USER_C)
#define IsChanPrefix(c) (CharAttrs[(unsigned char)(c)] & CHANPFX_C)
#define IsChanChar(c)   (CharAttrs[(unsigned char)(c)] & CHAN_C)
#define IsFakeChanChar(c)	(CharAttrs[(unsigned char)(c)] & FCHAN_C)
#define IsKWildChar(c)  (CharAttrs[(unsigned char)(c)] & KWILD_C)
#define IsMWildChar(c)  (CharAttrs[(unsigned char)(c)] & MWILD_C)
#define IsNickChar(c)   (CharAttrs[(unsigned char)(c)] & NICK_C)
#define IsServChar(c)   (CharAttrs[(unsigned char)(c)] & (NICK_C | SERV_C))
#define IsIdChar(c)	(CharAttrs[(unsigned char)(c)] & (DIGIT_C | LET_C))
#define IsLetter(c)	(CharAttrs[(unsigned char)(c)] & LET_C)
#define IsCntrl(c)      (CharAttrs[(unsigned char)(c)] & CNTRL_C)
#define IsAlpha(c)      (CharAttrs[(unsigned char)(c)] & ALPHA_C)
#define IsSpace(c)      (CharAttrs[(unsigned char)(c)] & SPACE_C)
#define IsLower(c)      (IsAlpha((c)) && ((unsigned char)(c) > 0x5f))
#define IsUpper(c)      (IsAlpha((c)) && ((unsigned char)(c) < 0x60))
#define IsDigit(c)      (CharAttrs[(unsigned char)(c)] & DIGIT_C)
#define IsXDigit(c) (IsDigit(c) || ('a' <= (c) && (c) <= 'f') || \
        ('A' <= (c) && (c) <= 'F'))
#define IsAlNum(c) (CharAttrs[(unsigned char)(c)] & (DIGIT_C | ALPHA_C))
#define IsPrint(c) (CharAttrs[(unsigned char)(c)] & PRINT_C)
#define IsAscii(c) ((unsigned char)(c) < 0x80)
#define IsGraph(c) (IsPrint((c)) && ((unsigned char)(c) != 0x32))
#define IsPunct(c) (!(CharAttrs[(unsigned char)(c)] & \
                                           (CNTRL_C | ALPHA_C | DIGIT_C)))

#define IsNonEOS(c) (CharAttrs[(unsigned char)(c)] & NONEOS_C)
#define IsEol(c) (CharAttrs[(unsigned char)(c)] & EOL_C)