diff options
Diffstat (limited to 'dep/utf8cpp/utf8/unchecked.h')
| -rw-r--r-- | dep/utf8cpp/utf8/unchecked.h | 113 |
1 files changed, 71 insertions, 42 deletions
diff --git a/dep/utf8cpp/utf8/unchecked.h b/dep/utf8cpp/utf8/unchecked.h index 8fe83c9ecbc..173d0302e14 100644 --- a/dep/utf8cpp/utf8/unchecked.h +++ b/dep/utf8cpp/utf8/unchecked.h @@ -35,13 +35,19 @@ namespace utf8 namespace unchecked { template <typename octet_iterator> - octet_iterator append(uint32_t cp, octet_iterator result) + octet_iterator append(utfchar32_t cp, octet_iterator result) { return internal::append(cp, result); } + template <typename word_iterator> + word_iterator append16(utfchar32_t cp, word_iterator result) + { + return internal::append16(cp, result); + } + template <typename octet_iterator, typename output_iterator> - output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out, uint32_t replacement) + output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out, utfchar32_t replacement) { while (start != end) { octet_iterator sequence_start = start; @@ -52,17 +58,17 @@ namespace utf8 *out++ = *it; break; case internal::NOT_ENOUGH_ROOM: - out = utf8::unchecked::append (replacement, out); + out = utf8::unchecked::append(replacement, out); start = end; break; case internal::INVALID_LEAD: - out = utf8::unchecked::append (replacement, out); + out = utf8::unchecked::append(replacement, out); ++start; break; case internal::INCOMPLETE_SEQUENCE: case internal::OVERLONG_SEQUENCE: case internal::INVALID_CODE_POINT: - out = utf8::unchecked::append (replacement, out); + out = utf8::unchecked::append(replacement, out); ++start; // just one replacement mark for the sequence while (start != end && utf8::internal::is_trail(*start)) @@ -76,35 +82,48 @@ namespace utf8 template <typename octet_iterator, typename output_iterator> inline output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out) { - static const uint32_t replacement_marker = utf8::internal::mask16(0xfffd); + static const utfchar32_t replacement_marker = static_cast<utfchar32_t>(utf8::internal::mask16(0xfffd)); return utf8::unchecked::replace_invalid(start, end, out, replacement_marker); } + inline std::string replace_invalid(const std::string& s, utfchar32_t replacement) + { + std::string result; + replace_invalid(s.begin(), s.end(), std::back_inserter(result), replacement); + return result; + } + + inline std::string replace_invalid(const std::string& s) + { + std::string result; + replace_invalid(s.begin(), s.end(), std::back_inserter(result)); + return result; + } + template <typename octet_iterator> - uint32_t next(octet_iterator& it) + utfchar32_t next(octet_iterator& it) { - uint32_t cp = utf8::internal::mask8(*it); - typename std::iterator_traits<octet_iterator>::difference_type length = utf8::internal::sequence_length(it); - switch (length) { + utfchar32_t cp = utf8::internal::mask8(*it); + switch (utf8::internal::sequence_length(it)) { case 1: break; case 2: - it++; + ++it; cp = ((cp << 6) & 0x7ff) + ((*it) & 0x3f); break; case 3: - ++it; + ++it; cp = ((cp << 12) & 0xffff) + ((utf8::internal::mask8(*it) << 6) & 0xfff); ++it; - cp += (*it) & 0x3f; + cp = static_cast<utfchar32_t>(cp + ((*it) & 0x3f)); break; case 4: ++it; - cp = ((cp << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff); + cp = ((cp << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff); ++it; - cp += (utf8::internal::mask8(*it) << 6) & 0xfff; + cp = static_cast<utfchar32_t>(cp + ((utf8::internal::mask8(*it) << 6) & 0xfff)); ++it; - cp += (*it) & 0x3f; + cp = static_cast<utfchar32_t>(cp + ((*it) & 0x3f)); break; } ++it; @@ -112,13 +131,22 @@ namespace utf8 } template <typename octet_iterator> - uint32_t peek_next(octet_iterator it) + utfchar32_t peek_next(octet_iterator it) { return utf8::unchecked::next(it); } + template <typename word_iterator> + utfchar32_t next16(word_iterator& it) + { + utfchar32_t cp = utf8::internal::mask16(*it++); + if (utf8::internal::is_lead_surrogate(cp)) + return (cp << 10) + *it++ + utf8::internal::SURROGATE_OFFSET; + return cp; + } + template <typename octet_iterator> - uint32_t prior(octet_iterator& it) + utfchar32_t prior(octet_iterator& it) { while (utf8::internal::is_trail(*(--it))) ; octet_iterator temp = it; @@ -126,7 +154,7 @@ namespace utf8 } template <typename octet_iterator, typename distance_type> - void advance (octet_iterator& it, distance_type n) + void advance(octet_iterator& it, distance_type n) { const distance_type zero(0); if (n < zero) { @@ -142,22 +170,24 @@ namespace utf8 template <typename octet_iterator> typename std::iterator_traits<octet_iterator>::difference_type - distance (octet_iterator first, octet_iterator last) + distance(octet_iterator first, octet_iterator last) { typename std::iterator_traits<octet_iterator>::difference_type dist; - for (dist = 0; first < last; ++dist) + for (dist = 0; first < last; ++dist) utf8::unchecked::next(first); return dist; } template <typename u16bit_iterator, typename octet_iterator> - octet_iterator utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result) + octet_iterator utf16to8(u16bit_iterator start, u16bit_iterator end, octet_iterator result) { while (start != end) { - uint32_t cp = utf8::internal::mask16(*start++); - // Take care of surrogate pairs first + utfchar32_t cp = utf8::internal::mask16(*start++); + // Take care of surrogate pairs first if (utf8::internal::is_lead_surrogate(cp)) { - uint32_t trail_surrogate = utf8::internal::mask16(*start++); + if (start == end) + return result; + utfchar32_t trail_surrogate = utf8::internal::mask16(*start++); cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET; } result = utf8::unchecked::append(cp, result); @@ -166,22 +196,22 @@ namespace utf8 } template <typename u16bit_iterator, typename octet_iterator> - u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result) + u16bit_iterator utf8to16(octet_iterator start, octet_iterator end, u16bit_iterator result) { while (start < end) { - uint32_t cp = utf8::unchecked::next(start); + utfchar32_t cp = utf8::unchecked::next(start); if (cp > 0xffff) { //make a surrogate pair - *result++ = static_cast<uint16_t>((cp >> 10) + internal::LEAD_OFFSET); - *result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN); + *result++ = static_cast<utfchar16_t>((cp >> 10) + internal::LEAD_OFFSET); + *result++ = static_cast<utfchar16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN); } else - *result++ = static_cast<uint16_t>(cp); + *result++ = static_cast<utfchar16_t>(cp); } return result; } template <typename octet_iterator, typename u32bit_iterator> - octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result) + octet_iterator utf32to8(u32bit_iterator start, u32bit_iterator end, octet_iterator result) { while (start != end) result = utf8::unchecked::append(*(start++), result); @@ -190,7 +220,7 @@ namespace utf8 } template <typename octet_iterator, typename u32bit_iterator> - u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result) + u32bit_iterator utf8to32(octet_iterator start, octet_iterator end, u32bit_iterator result) { while (start < end) (*result++) = utf8::unchecked::next(start); @@ -203,29 +233,29 @@ namespace utf8 class iterator { octet_iterator it; public: - typedef uint32_t value_type; - typedef uint32_t* pointer; - typedef uint32_t& reference; + typedef utfchar32_t value_type; + typedef utfchar32_t* pointer; + typedef utfchar32_t& reference; typedef std::ptrdiff_t difference_type; typedef std::bidirectional_iterator_tag iterator_category; iterator () {} explicit iterator (const octet_iterator& octet_it): it(octet_it) {} // the default "big three" are OK octet_iterator base () const { return it; } - uint32_t operator * () const + utfchar32_t operator * () const { octet_iterator temp = it; return utf8::unchecked::next(temp); } - bool operator == (const iterator& rhs) const - { + bool operator == (const iterator& rhs) const + { return (it == rhs.it); } bool operator != (const iterator& rhs) const { return !(operator == (rhs)); } - iterator& operator ++ () + iterator& operator ++ () { ::std::advance(it, utf8::internal::sequence_length(it)); return *this; @@ -235,7 +265,7 @@ namespace utf8 iterator temp = *this; ::std::advance(it, utf8::internal::sequence_length(it)); return temp; - } + } iterator& operator -- () { utf8::unchecked::prior(it); @@ -250,8 +280,7 @@ namespace utf8 }; // class iterator } // namespace utf8::unchecked -} // namespace utf8 - +} // namespace utf8 #endif // header guard |