This macros allows easily convert Utf-8 encoded string to array of UNICODE characters (unsigned int)

utf8.c

// a - your string (char *), i - iterator (uint), c - output character (uint)
#define UTF8_TO_UINT(a, i)                                                     \
if((a[i] & 0b10000000) == 0) {                                                 \
    c  =  (unsigned)a[i++];                                                    \
}                                                                              \
else if (((unsigned)a[i]   & 0b11100000) == 0b11000000) {                      \
    c =  ((unsigned)a[i++] & 0b00011111) << 6;                                 \
    c |=  (unsigned)a[i++] & 0b00111111;                                       \
}                                                                              \
else if (((unsigned)a[i]   & 0b11110000) == 0b11100000) {                      \
    c =  ((unsigned)a[i++] & 0b00001111) << 12;                                \
    c |= ((unsigned)a[i++] & 0b00111111) << 6;                                 \
    c |=  (unsigned)a[i++] & 0b00111111;                                       \
}                                                                              \
else if (((unsigned)a[i]   & 0b11111000) == 0b11110000) {                      \
    c =  ((unsigned)a[i++] & 0b00000111) << 18;                                \
    c |= ((unsigned)a[i++] & 0b00111111) << 12;                                \
    c |= ((unsigned)a[i++] & 0b00111111) << 6;                                 \
    c |=  (unsigned)a[i++] & 0b00111111;                                       \
} else { /* Error! */                                                          \
    c = 0;                                                                     \
}