Function dec

src/data/ucs2/mod.rs:29–79

Decode UCS-2 into UTF-8

(input: &[u16], output: &mut [u8])

// Decode UCS-2 into UTF-8
pub fn dec(input: &[u16], output: &mut [u8]) -> Result<usize>
{
	let bsize = output.len();
	let mut i = 0;

	dec_w(input, |bytes|
	{
		if bytes.len() == 1
		{
			if i >= bsize
			{
				return Err(Err::BOverflow);
			}

			output[i] = bytes[0];

			i += 1;
		}
		else if bytes.len() == 2
		{
			if i + 1 >= bsize
			{
				return Err(Err::BOverflow);
			}

			output[i] = bytes[0];
			output[i + 1] = bytes[1];

			i += 2;
		}
		else if bytes.len() == 3
		{
			if i + 2 >= bsize
			{
				return Err(Err::BOverflow);
			}

			output[i] = bytes[0];
			output[i + 1] = bytes[1];
			output[i + 2] = bytes[2];

			i += 3;
		}
		else
		{
			unreachable!("[ERR] > 3 BYTES SPECIFIED FOR UCS-2 CHARACTER");
		}

		Ok(())
	})
}


// Use a custom callback to encode UCS-2 into UTF-8