sys/libunicode/canfit.c


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#include "internal.h"

/* returns 1 if string of length n is long enough to be decoded */
int
utf8·canfit(byte* s, int n)
{
    int  i;
    rune c;

    if(n <= 0) return 0;
    c = *(ubyte*) s;
    if(c < Tx) return 1;

    for(i = 3; i < UTFmax + 1; i++){
        if(c < Tbyte(i))
            return n >= i - 1;
    }

    return n >= UTFmax;
}