56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
#ifndef __CTYPE_H
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#define __CTYPE_H
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/******************************
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* ctype.h *
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* - character macros *
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******************************/
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#ifdef _MSC_VER
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// Get rid of conversion warnings
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#pragma warning (disable:4244)
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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extern char _ctype[];
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/* Constants */
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#define CT_UP 0x01 /* upper case */
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#define CT_LOW 0x02 /* lower case */
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#define CT_DIG 0x04 /* digit */
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#define CT_CTL 0x08 /* control */
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#define CT_PUN 0x10 /* punctuation */
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#define CT_WHT 0x20 /* white space (space/cr/lf/tab) */
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#define CT_HEX 0x40 /* hex digit */
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#define CT_SP 0x80 /* hard space (0x20) */
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/* Basic macros */
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#define isalnum(c) ((_ctype + 1)[(unsigned)(c)] & (CT_UP | CT_LOW | CT_DIG))
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#define isalpha(c) ((_ctype + 1)[(unsigned)(c)] & (CT_UP | CT_LOW))
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#define iscntrl(c) ((_ctype + 1)[(unsigned)(c)] & (CT_CTL))
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#define isdigit(c) ((_ctype + 1)[(unsigned)(c)] & (CT_DIG))
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#define isgraph(c) ((_ctype + 1)[(unsigned)(c)] & (CT_PUN | CT_UP | CT_LOW | CT_DIG))
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#define islower(c) ((_ctype + 1)[(unsigned)(c)] & (CT_LOW))
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#define isprint(c) ((_ctype + 1)[(unsigned)(c)] & (CT_PUN | CT_UP | CT_LOW | CT_DIG | CT_SP))
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#define ispunct(c) ((_ctype + 1)[(unsigned)(c)] & (CT_PUN))
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#define isspace(c) ((_ctype + 1)[(unsigned)(c)] & (CT_WHT))
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#define isupper(c) ((_ctype + 1)[(unsigned)(c)] & (CT_UP))
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#define isxdigit(c) ((_ctype + 1)[(unsigned)(c)] & (CT_DIG | CT_HEX))
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#define isascii(c) ((unsigned)(c) <= 0x7F)
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#define toascii(c) ((unsigned)(c) & 0x7F)
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#define tolower(c) (isupper(c) ? c + 'a' - 'A' : c)
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#define toupper(c) (islower(c) ? c + 'A' - 'a' : c)
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#ifdef __cplusplus
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}
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#endif
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#endif
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