| 232 | |
| 233 | template <typename u16bit_iterator, typename octet_iterator> |
| 234 | u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result) |
| 235 | { |
| 236 | while (start != end) { |
| 237 | uint32_t cp = utf8::next(start, end); |
| 238 | if (cp > 0xffff) { //make a surrogate pair |
| 239 | *result++ = static_cast<uint16_t>((cp >> 10) + internal::LEAD_OFFSET); |
| 240 | *result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN); |
| 241 | } |
| 242 | else |
| 243 | *result++ = static_cast<uint16_t>(cp); |
| 244 | } |
| 245 | return result; |
| 246 | } |
| 247 | |
| 248 | template <typename octet_iterator, typename u32bit_iterator> |
| 249 | octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result) |