/// Convert UTF-16 to UTF-8.
utf8_string Halyard::utf8_from_utf16(const utf16_string &utf16) {
utf8_string result;
result.reserve(utf16.size());
// Output our characters.
for (size_t i = 0; i < utf16.size(); i++) {
wchar_t wc = utf16[i];
if (wc <= 0x007F) {
result.push_back(wc & 0x7F);
} else if (wc <= 0x07FF) {
// 110xxxxx 10xxxxxx
result.push_back(0xC0 | (wc >> 6));
result.push_back(0x80 | (wc & 0x3F));
} else if (wc <= 0xFFFF) {
inline string_t utf(utf16_string const& str)
{
return aux::converter<char_t>::utf(str.c_str(), str.size());
}
inline utf32_string utf32(utf16_string const& str)
{
return aux::converter<utf32_char>::utf(str.c_str(), str.size());
}
