28 #ifndef UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
29 #define UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
37 template <
typename octet_iterator>
41 *(result++) = static_cast<uint8_t>(cp);
42 else if (cp < 0x800) {
43 *(result++) = static_cast<uint8_t>((cp >> 6) | 0xc0);
44 *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
46 else if (cp < 0x10000) {
47 *(result++) = static_cast<uint8_t>((cp >> 12) | 0xe0);
48 *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
49 *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
52 *(result++) = static_cast<uint8_t>((cp >> 18) | 0xf0);
53 *(result++) = static_cast<uint8_t>(((cp >> 12)& 0x3f) | 0x80);
54 *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
55 *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
59 template <
typename octet_iterator>
69 cp = ((cp << 6) & 0x7ff) + ((*it) & 0x3f);
79 cp = ((cp << 18) & 0x1fffff) + ((
internal::mask8(*it) << 12) & 0x3ffff);
90 template <
typename octet_iterator>
94 octet_iterator temp = it;
99 template <
typename octet_iterator>
105 template <
typename octet_iterator,
typename distance_type>
106 void advance (octet_iterator& it, distance_type n)
108 for (distance_type i = 0; i < n; ++i)
112 template <
typename octet_iterator>
113 typename std::iterator_traits<octet_iterator>::difference_type
114 distance (octet_iterator first, octet_iterator last)
116 typename std::iterator_traits<octet_iterator>::difference_type dist;
117 for (dist = 0; first < last; ++dist)
122 template <
typename u16bit_iterator,
typename octet_iterator>
123 octet_iterator
utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result)
125 while (start != end) {
132 result =
append(cp, result);
137 template <
typename u16bit_iterator,
typename octet_iterator>
138 u16bit_iterator
utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
140 while (start != end) {
147 *result++ =
static_cast<uint16_t>(cp);
152 template <
typename octet_iterator,
typename u32bit_iterator>
153 octet_iterator
utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
156 result =
append(*(start++), result);
161 template <
typename octet_iterator,
typename u32bit_iterator>
162 u32bit_iterator
utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
165 (*result++) =
next(start);
171 template <
typename octet_iterator>
172 class iterator :
public std::iterator <std::bidirectional_iterator_tag, uint32_t> {
176 explicit iterator (
const octet_iterator& octet_it):
it(octet_it) {}
178 octet_iterator
base ()
const {
return it; }
181 octet_iterator temp =
it;
186 return (
it == rhs.
it);
220 #endif // header guard
octet_iterator append(uint32_t cp, octet_iterator result)
std::iterator_traits< octet_iterator >::difference_type sequence_length(octet_iterator lead_it)
const uint16_t TRAIL_SURROGATE_MIN
u32bit_iterator utf8to32(octet_iterator start, octet_iterator end, u32bit_iterator result)
bool operator!=(const iterator &rhs) const
std::iterator_traits< octet_iterator >::difference_type distance(octet_iterator first, octet_iterator last)
uint32_t next(octet_iterator &it)
octet_iterator utf32to8(u32bit_iterator start, u32bit_iterator end, octet_iterator result)
u16bit_iterator utf8to16(octet_iterator start, octet_iterator end, u16bit_iterator result)
uint32_t previous(octet_iterator &it)
uint8_t mask8(octet_type oc)
octet_iterator base() const
void advance(octet_iterator &it, distance_type n, octet_iterator end)
iterator(const octet_iterator &octet_it)
const uint32_t SURROGATE_OFFSET
bool operator==(const iterator &rhs) const
octet_iterator utf16to8(u16bit_iterator start, u16bit_iterator end, octet_iterator result)
uint16_t mask16(u16_type oc)
void advance(octet_iterator &it, distance_type n)
bool is_surrogate(u16 cp)
bool is_trail(octet_type oc)
const uint16_t LEAD_OFFSET
uint32_t prior(octet_iterator &it)
uint32_t operator*() const