| 143 | |
| 144 | template <typename u16bit_iterator, typename octet_iterator> |
| 145 | u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result) |
| 146 | { |
| 147 | while (start < end) { |
| 148 | uint32_t cp = utf8::unchecked::next(start); |
| 149 | if (cp > 0xffff) { //make a surrogate pair |
| 150 | *result++ = static_cast<uint16_t>((cp >> 10) + internal::LEAD_OFFSET); |
| 151 | *result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN); |
| 152 | } |
| 153 | else |
| 154 | *result++ = static_cast<uint16_t>(cp); |
| 155 | } |
| 156 | return result; |
| 157 | } |
| 158 | |
| 159 | template <typename octet_iterator, typename u32bit_iterator> |
| 160 | octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result) |