Function decode

src/core/strings/utf8.cpp:36–46

	// code-format on

	u32 decode(u32 *state, u32 *codep, u32 byte)
	{
		u32 type = utf8d[byte];

		*codep = (*state != UTF8_ACCEPT) ?
			(byte & 0x3fu) | (*codep << 6) :
			(0xff >> type) & (byte);

		*state = utf8d[256 + *state*16 + type];
		return *state;
	}

} // namespace utf8