89 lines
1.5 KiB
C
89 lines
1.5 KiB
C
#include "ctype.h"
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#define CC_CTRL 0x00
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#define CC_BREAK 0x01
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#define CC_SPACE 0x02
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#define CC_DIGIT 0x04
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#define CC_LOWER 0x08
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#define CC_UPPER 0x10
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#define CC_HEX 0x20
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#define CC_PUNCT 0x40
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static const char _cinfo[128] = {
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[0 ... 8] = CC_CTRL,
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[9] = CC_SPACE,
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[10 ... 13] = CC_BREAK,
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[14 ... 31] = CC_CTRL,
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[32] = CC_SPACE,
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[33 ... 47] = CC_PUNCT,
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[48 ... 57] = CC_DIGIT,
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[58 ... 64] = CC_PUNCT,
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[65 ... 70] = CC_UPPER | CC_HEX,
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[71 ... 90] = CC_UPPER,
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[91 ... 96] = CC_PUNCT,
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[97 ... 102] = CC_LOWER | CC_HEX,
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[103 ... 122] = CC_LOWER,
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[123 ... 126] = CC_PUNCT,
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[127] = CC_CTRL
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};
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bool isctrnl(char c)
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{
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return (c < 128) && _cinfo[c] == CC_CTRL;
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}
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bool isprint(char c)
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{
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return (c < 128) && _cinfo[c] != CC_CTRL;
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}
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bool isspace(char c)
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{
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return (c < 128) && (_cinfo[c] & (CC_SPACE | CC_BREAK));
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}
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bool isblank(char c)
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{
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return (c < 128) && (_cinfo[c] & CC_SPACE);
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}
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bool isgraph(char c)
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{
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return (c < 128) && (_cinfo[c] & (CC_LOWER | CC_UPPER | CC_DIGIT | CC_PUNCT));
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}
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bool ispunct(char c)
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{
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return (c < 128) && (_cinfo[c] & CC_PUNCT);
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}
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bool isalnum(char c)
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{
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return (c < 128) && (_cinfo[c] & (CC_LOWER | CC_UPPER | CC_DIGIT));
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}
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bool isalpha(char c)
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{
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return (c < 128) && (_cinfo[c] & (CC_LOWER | CC_UPPER));
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}
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bool isupper(char c)
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{
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return (c < 128) && (_cinfo[c] & CC_UPPER);
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}
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bool islower(char c)
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{
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return (c < 128) && (_cinfo[c] & CC_LOWER);
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}
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bool isdigit(char c)
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{
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return (c < 128) && (_cinfo[c] & CC_DIGIT);
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}
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bool isxdigit(char c)
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{
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return (c < 128) && (_cinfo[c] & CC_HEX);
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}
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