On 2014-03-24 04:37:22 +0000, Michel Fortin <[email protected]> said:
But try this instead, the result is even shorter:
Oops, messed up my patterns. Here's a hopefully fixed front():
dchar front(char[] s)
{
if (s[0] < 0b1000000)
return s[0]; // ASCII
// pattern indicator tailLength
// 0b1100xxxx 0b00 (0) 1
// 0b1101xxxx 0b01 (1) 1 == indicator
// 0b1110xxxx 0b10 (2) 2 == indicator
// 0b1111xxxx 0b11 (3) 3 == indicator
// note: undefined result for illegal 0b11111xxx case
auto indicator = (s[0] >> 4) & 0b11;
auto tailLength = indicator ? indicator : 1;
dchar result = s[0] & (0b00111111 >> tailLength);
foreach (i; 0..tailLength)
result = (result << 6) | (s[1+i] & 0b00111111);
return result;
}
--
Michel Fortin
[email protected]
http://michelf.ca
