44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
#include <ctype.h>
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// Let's save up some space and readability (that's Cake's idea, it's a bit of
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// a preprocessor trick - but a rather nice trick).
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#define r4(x) (x), (x), (x), (x)
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#define r5(x) r4(x), (x)
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#define r6(x) r5(x), (x)
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#define r7(x) r6(x), (x)
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#define r9(x) r7(x), (x), (x)
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#define r10(x) r6(x), r4(x)
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#define r15(x) r10(x), r4(x), (x)
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#define r18(x) r9(x), r9(x)
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#define r20(x) r10(x), r10(x)
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enum {
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cntrl = 0x01,
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space = 0x02,
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punct = 0x04,
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print = 0x08,
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upper = 0x20,
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lower = 0x10,
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digit = 0x40,
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xdigt = 0x80,
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};
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uint8_t ctype_classes[0x80] = {
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// Control characters.
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r9(cntrl), r5(cntrl | space), r18(cntrl),
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// Space and some punctuation.
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space | print, r15(punct | print),
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// Decimal digits.
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r10(digit | xdigt | print),
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// Some punctuation.
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r7(punct | print),
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// Uppercase alphabet.
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r6(upper | xdigt | print), r20(upper | print),
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// Other punctuation symbols.
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r6(punct | print),
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// Lowercase alphabet.
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r6(lower | xdigt | print), r20(lower | print),
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// Last punctuation characters and DEL.
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r4(punct | print), cntrl,
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};
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