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| 1 | /* ctype.h */
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| 2 |
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| 3 | /* This file contains macros definitions and extern declarations for a
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| 4 | * version of <ctype.h> which is aware of the o_flipcase letters used in
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| 5 | * elvis.
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| 6 | *
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| 7 | * This file uses the "uchar" data type and "UCHAR" conversion macro which
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| 8 | * are defined in "config.h". Consequently, any file that includes this
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| 9 | * header must include config.h first.
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| 10 | */
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| 11 |
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| 12 | #ifndef _CT_UPPER
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| 13 |
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| 14 | #define _CT_UPPER 0x01
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| 15 | #define _CT_LOWER 0x02
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| 16 | #define _CT_SPACE 0x04
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| 17 | #define _CT_DIGIT 0x08
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| 18 | #define _CT_ALNUM 0x10
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| 19 | #define _CT_CNTRL 0x20
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| 20 |
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| 21 | #define isalnum(c) (_ct_ctypes[UCHAR(c)] & _CT_ALNUM)
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| 22 | #define isalpha(c) (_ct_ctypes[UCHAR(c)] & (_CT_LOWER|_CT_UPPER))
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| 23 | #define isdigit(c) (_ct_ctypes[UCHAR(c)] & _CT_DIGIT)
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| 24 | #define islower(c) (_ct_ctypes[UCHAR(c)] & _CT_LOWER)
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| 25 | #define isspace(c) (_ct_ctypes[UCHAR(c)] & _CT_SPACE)
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| 26 | #define isupper(c) (_ct_ctypes[UCHAR(c)] & _CT_UPPER)
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| 27 | #define iscntrl(c) (_ct_ctypes[UCHAR(c)] & _CT_CNTRL)
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| 28 | #define ispunct(c) (!_ct_ctypes[UCHAR(c)]) /* punct = "none of the above" */
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| 29 |
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| 30 | #define isascii(c) (!((c) & 0x80))
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| 31 |
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| 32 | #define toupper(c) _ct_toupper[UCHAR(c)]
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| 33 | #define tolower(c) _ct_tolower[UCHAR(c)]
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| 34 |
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| 35 | extern uchar _ct_toupper[];
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| 36 | extern uchar _ct_tolower[];
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| 37 | extern uchar _ct_ctypes[];
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| 38 | extern void _ct_init(/* char *flipcase */);
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| 39 |
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| 40 | #endif /* ndef _CT_UPPER */
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