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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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