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-rw-r--r--src/utf8/checked.h327
-rw-r--r--src/utf8/core.h329
-rw-r--r--src/utf8/unchecked.h228
3 files changed, 0 insertions, 884 deletions
diff --git a/src/utf8/checked.h b/src/utf8/checked.h
deleted file mode 100644
index 1331155..0000000
--- a/src/utf8/checked.h
+++ /dev/null
@@ -1,327 +0,0 @@
-// Copyright 2006 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_CHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_CHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include "core.h"
-#include <stdexcept>
-
-namespace utf8
-{
- // Base for the exceptions that may be thrown from the library
- class exception : public ::std::exception {
- };
-
- // Exceptions that may be thrown from the library functions.
- class invalid_code_point : public exception {
- uint32_t cp;
- public:
- invalid_code_point(uint32_t cp) : cp(cp) {}
- virtual const char* what() const throw() { return "Invalid code point"; }
- uint32_t code_point() const {return cp;}
- };
-
- class invalid_utf8 : public exception {
- uint8_t u8;
- public:
- invalid_utf8 (uint8_t u) : u8(u) {}
- virtual const char* what() const throw() { return "Invalid UTF-8"; }
- uint8_t utf8_octet() const {return u8;}
- };
-
- class invalid_utf16 : public exception {
- uint16_t u16;
- public:
- invalid_utf16 (uint16_t u) : u16(u) {}
- virtual const char* what() const throw() { return "Invalid UTF-16"; }
- uint16_t utf16_word() const {return u16;}
- };
-
- class not_enough_room : public exception {
- public:
- virtual const char* what() const throw() { return "Not enough space"; }
- };
-
- /// The library API - functions intended to be called by the users
-
- template <typename octet_iterator>
- octet_iterator append(uint32_t cp, octet_iterator result)
- {
- if (!utf8::internal::is_code_point_valid(cp))
- throw invalid_code_point(cp);
-
- if (cp < 0x80) // one octet
- *(result++) = static_cast<uint8_t>(cp);
- else if (cp < 0x800) { // two octets
- *(result++) = static_cast<uint8_t>((cp >> 6) | 0xc0);
- *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
- }
- else if (cp < 0x10000) { // three octets
- *(result++) = static_cast<uint8_t>((cp >> 12) | 0xe0);
- *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
- *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
- }
- else { // four octets
- *(result++) = static_cast<uint8_t>((cp >> 18) | 0xf0);
- *(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f) | 0x80);
- *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
- *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
- }
- return result;
- }
-
- template <typename octet_iterator, typename output_iterator>
- output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out, uint32_t replacement)
- {
- while (start != end) {
- octet_iterator sequence_start = start;
- internal::utf_error err_code = utf8::internal::validate_next(start, end);
- switch (err_code) {
- case internal::UTF8_OK :
- for (octet_iterator it = sequence_start; it != start; ++it)
- *out++ = *it;
- break;
- case internal::NOT_ENOUGH_ROOM:
- throw not_enough_room();
- case internal::INVALID_LEAD:
- out = utf8::append (replacement, out);
- ++start;
- break;
- case internal::INCOMPLETE_SEQUENCE:
- case internal::OVERLONG_SEQUENCE:
- case internal::INVALID_CODE_POINT:
- out = utf8::append (replacement, out);
- ++start;
- // just one replacement mark for the sequence
- while (start != end && utf8::internal::is_trail(*start))
- ++start;
- break;
- }
- }
- return out;
- }
-
- 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);
- return utf8::replace_invalid(start, end, out, replacement_marker);
- }
-
- template <typename octet_iterator>
- uint32_t next(octet_iterator& it, octet_iterator end)
- {
- uint32_t cp = 0;
- internal::utf_error err_code = utf8::internal::validate_next(it, end, cp);
- switch (err_code) {
- case internal::UTF8_OK :
- break;
- case internal::NOT_ENOUGH_ROOM :
- throw not_enough_room();
- case internal::INVALID_LEAD :
- case internal::INCOMPLETE_SEQUENCE :
- case internal::OVERLONG_SEQUENCE :
- throw invalid_utf8(*it);
- case internal::INVALID_CODE_POINT :
- throw invalid_code_point(cp);
- }
- return cp;
- }
-
- template <typename octet_iterator>
- uint32_t peek_next(octet_iterator it, octet_iterator end)
- {
- return utf8::next(it, end);
- }
-
- template <typename octet_iterator>
- uint32_t prior(octet_iterator& it, octet_iterator start)
- {
- // can't do much if it == start
- if (it == start)
- throw not_enough_room();
-
- octet_iterator end = it;
- // Go back until we hit either a lead octet or start
- while (utf8::internal::is_trail(*(--it)))
- if (it == start)
- throw invalid_utf8(*it); // error - no lead byte in the sequence
- return utf8::peek_next(it, end);
- }
-
- /// Deprecated in versions that include "prior"
- template <typename octet_iterator>
- uint32_t previous(octet_iterator& it, octet_iterator pass_start)
- {
- octet_iterator end = it;
- while (utf8::internal::is_trail(*(--it)))
- if (it == pass_start)
- throw invalid_utf8(*it); // error - no lead byte in the sequence
- octet_iterator temp = it;
- return utf8::next(temp, end);
- }
-
- template <typename octet_iterator, typename distance_type>
- void advance (octet_iterator& it, distance_type n, octet_iterator end)
- {
- for (distance_type i = 0; i < n; ++i)
- utf8::next(it, end);
- }
-
- template <typename octet_iterator>
- typename std::iterator_traits<octet_iterator>::difference_type
- distance (octet_iterator first, octet_iterator last)
- {
- typename std::iterator_traits<octet_iterator>::difference_type dist;
- for (dist = 0; first < last; ++dist)
- utf8::next(first, last);
- return dist;
- }
-
- template <typename u16bit_iterator, typename octet_iterator>
- 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
- if (utf8::internal::is_lead_surrogate(cp)) {
- if (start != end) {
- uint32_t trail_surrogate = utf8::internal::mask16(*start++);
- if (utf8::internal::is_trail_surrogate(trail_surrogate))
- cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
- else
- throw invalid_utf16(static_cast<uint16_t>(trail_surrogate));
- }
- else
- throw invalid_utf16(static_cast<uint16_t>(cp));
-
- }
- // Lone trail surrogate
- else if (utf8::internal::is_trail_surrogate(cp))
- throw invalid_utf16(static_cast<uint16_t>(cp));
-
- result = utf8::append(cp, result);
- }
- return result;
- }
-
- template <typename u16bit_iterator, typename octet_iterator>
- u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
- {
- while (start != end) {
- uint32_t cp = utf8::next(start, end);
- 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);
- }
- else
- *result++ = static_cast<uint16_t>(cp);
- }
- return result;
- }
-
- template <typename octet_iterator, typename u32bit_iterator>
- octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
- {
- while (start != end)
- result = utf8::append(*(start++), result);
-
- return result;
- }
-
- template <typename octet_iterator, typename u32bit_iterator>
- u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
- {
- while (start != end)
- (*result++) = utf8::next(start, end);
-
- return result;
- }
-
- // The iterator class
- template <typename octet_iterator>
- class iterator : public std::iterator <std::bidirectional_iterator_tag, uint32_t> {
- octet_iterator it;
- octet_iterator range_start;
- octet_iterator range_end;
- public:
- iterator () {}
- explicit iterator (const octet_iterator& octet_it,
- const octet_iterator& range_start,
- const octet_iterator& range_end) :
- it(octet_it), range_start(range_start), range_end(range_end)
- {
- if (it < range_start || it > range_end)
- throw std::out_of_range("Invalid utf-8 iterator position");
- }
- // the default "big three" are OK
- octet_iterator base () const { return it; }
- uint32_t operator * () const
- {
- octet_iterator temp = it;
- return utf8::next(temp, range_end);
- }
- bool operator == (const iterator& rhs) const
- {
- if (range_start != rhs.range_start || range_end != rhs.range_end)
- throw std::logic_error("Comparing utf-8 iterators defined with different ranges");
- return (it == rhs.it);
- }
- bool operator != (const iterator& rhs) const
- {
- return !(operator == (rhs));
- }
- iterator& operator ++ ()
- {
- utf8::next(it, range_end);
- return *this;
- }
- iterator operator ++ (int)
- {
- iterator temp = *this;
- utf8::next(it, range_end);
- return temp;
- }
- iterator& operator -- ()
- {
- utf8::prior(it, range_start);
- return *this;
- }
- iterator operator -- (int)
- {
- iterator temp = *this;
- utf8::prior(it, range_start);
- return temp;
- }
- }; // class iterator
-
-} // namespace utf8
-
-#endif //header guard
-
-
diff --git a/src/utf8/core.h b/src/utf8/core.h
deleted file mode 100644
index 693d388..0000000
--- a/src/utf8/core.h
+++ /dev/null
@@ -1,329 +0,0 @@
-// Copyright 2006 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_CORE_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_CORE_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include <iterator>
-
-namespace utf8
-{
- // The typedefs for 8-bit, 16-bit and 32-bit unsigned integers
- // You may need to change them to match your system.
- // These typedefs have the same names as ones from cstdint, or boost/cstdint
- typedef unsigned char uint8_t;
- typedef unsigned short uint16_t;
- typedef unsigned int uint32_t;
-
-// Helper code - not intended to be directly called by the library users. May be changed at any time
-namespace internal
-{
- // Unicode constants
- // Leading (high) surrogates: 0xd800 - 0xdbff
- // Trailing (low) surrogates: 0xdc00 - 0xdfff
- const uint16_t LEAD_SURROGATE_MIN = 0xd800u;
- const uint16_t LEAD_SURROGATE_MAX = 0xdbffu;
- const uint16_t TRAIL_SURROGATE_MIN = 0xdc00u;
- const uint16_t TRAIL_SURROGATE_MAX = 0xdfffu;
- const uint16_t LEAD_OFFSET = LEAD_SURROGATE_MIN - (0x10000 >> 10);
- const uint32_t SURROGATE_OFFSET = 0x10000u - (LEAD_SURROGATE_MIN << 10) - TRAIL_SURROGATE_MIN;
-
- // Maximum valid value for a Unicode code point
- const uint32_t CODE_POINT_MAX = 0x0010ffffu;
-
- template<typename octet_type>
- inline uint8_t mask8(octet_type oc)
- {
- return static_cast<uint8_t>(0xff & oc);
- }
- template<typename u16_type>
- inline uint16_t mask16(u16_type oc)
- {
- return static_cast<uint16_t>(0xffff & oc);
- }
- template<typename octet_type>
- inline bool is_trail(octet_type oc)
- {
- return ((utf8::internal::mask8(oc) >> 6) == 0x2);
- }
-
- template <typename u16>
- inline bool is_lead_surrogate(u16 cp)
- {
- return (cp >= LEAD_SURROGATE_MIN && cp <= LEAD_SURROGATE_MAX);
- }
-
- template <typename u16>
- inline bool is_trail_surrogate(u16 cp)
- {
- return (cp >= TRAIL_SURROGATE_MIN && cp <= TRAIL_SURROGATE_MAX);
- }
-
- template <typename u16>
- inline bool is_surrogate(u16 cp)
- {
- return (cp >= LEAD_SURROGATE_MIN && cp <= TRAIL_SURROGATE_MAX);
- }
-
- template <typename u32>
- inline bool is_code_point_valid(u32 cp)
- {
- return (cp <= CODE_POINT_MAX && !utf8::internal::is_surrogate(cp));
- }
-
- template <typename octet_iterator>
- inline typename std::iterator_traits<octet_iterator>::difference_type
- sequence_length(octet_iterator lead_it)
- {
- uint8_t lead = utf8::internal::mask8(*lead_it);
- if (lead < 0x80)
- return 1;
- else if ((lead >> 5) == 0x6)
- return 2;
- else if ((lead >> 4) == 0xe)
- return 3;
- else if ((lead >> 3) == 0x1e)
- return 4;
- else
- return 0;
- }
-
- template <typename octet_difference_type>
- inline bool is_overlong_sequence(uint32_t cp, octet_difference_type length)
- {
- if (cp < 0x80) {
- if (length != 1)
- return true;
- }
- else if (cp < 0x800) {
- if (length != 2)
- return true;
- }
- else if (cp < 0x10000) {
- if (length != 3)
- return true;
- }
-
- return false;
- }
-
- enum utf_error {UTF8_OK, NOT_ENOUGH_ROOM, INVALID_LEAD, INCOMPLETE_SEQUENCE, OVERLONG_SEQUENCE, INVALID_CODE_POINT};
-
- /// Helper for get_sequence_x
- template <typename octet_iterator>
- utf_error increase_safely(octet_iterator& it, octet_iterator end)
- {
- if (++it == end)
- return NOT_ENOUGH_ROOM;
-
- if (!utf8::internal::is_trail(*it))
- return INCOMPLETE_SEQUENCE;
-
- return UTF8_OK;
- }
-
- #define UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(IT, END) {utf_error ret = increase_safely(IT, END); if (ret != UTF8_OK) return ret;}
-
- /// get_sequence_x functions decode utf-8 sequences of the length x
- template <typename octet_iterator>
- utf_error get_sequence_1(octet_iterator& it, octet_iterator end, uint32_t& code_point)
- {
- if (it == end)
- return NOT_ENOUGH_ROOM;
-
- code_point = utf8::internal::mask8(*it);
-
- return UTF8_OK;
- }
-
- template <typename octet_iterator>
- utf_error get_sequence_2(octet_iterator& it, octet_iterator end, uint32_t& code_point)
- {
- if (it == end)
- return NOT_ENOUGH_ROOM;
-
- code_point = utf8::internal::mask8(*it);
-
- UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
- code_point = ((code_point << 6) & 0x7ff) + ((*it) & 0x3f);
-
- return UTF8_OK;
- }
-
- template <typename octet_iterator>
- utf_error get_sequence_3(octet_iterator& it, octet_iterator end, uint32_t& code_point)
- {
- if (it == end)
- return NOT_ENOUGH_ROOM;
-
- code_point = utf8::internal::mask8(*it);
-
- UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
- code_point = ((code_point << 12) & 0xffff) + ((utf8::internal::mask8(*it) << 6) & 0xfff);
-
- UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
- code_point += (*it) & 0x3f;
-
- return UTF8_OK;
- }
-
- template <typename octet_iterator>
- utf_error get_sequence_4(octet_iterator& it, octet_iterator end, uint32_t& code_point)
- {
- if (it == end)
- return NOT_ENOUGH_ROOM;
-
- code_point = utf8::internal::mask8(*it);
-
- UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
- code_point = ((code_point << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff);
-
- UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
- code_point += (utf8::internal::mask8(*it) << 6) & 0xfff;
-
- UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
- code_point += (*it) & 0x3f;
-
- return UTF8_OK;
- }
-
- #undef UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR
-
- template <typename octet_iterator>
- utf_error validate_next(octet_iterator& it, octet_iterator end, uint32_t& code_point)
- {
- // Save the original value of it so we can go back in case of failure
- // Of course, it does not make much sense with i.e. stream iterators
- octet_iterator original_it = it;
-
- uint32_t cp = 0;
- // Determine the sequence length based on the lead octet
- typedef typename std::iterator_traits<octet_iterator>::difference_type octet_difference_type;
- const octet_difference_type length = utf8::internal::sequence_length(it);
-
- // Get trail octets and calculate the code point
- utf_error err = UTF8_OK;
- switch (length) {
- case 0:
- return INVALID_LEAD;
- case 1:
- err = utf8::internal::get_sequence_1(it, end, cp);
- break;
- case 2:
- err = utf8::internal::get_sequence_2(it, end, cp);
- break;
- case 3:
- err = utf8::internal::get_sequence_3(it, end, cp);
- break;
- case 4:
- err = utf8::internal::get_sequence_4(it, end, cp);
- break;
- }
-
- if (err == UTF8_OK) {
- // Decoding succeeded. Now, security checks...
- if (utf8::internal::is_code_point_valid(cp)) {
- if (!utf8::internal::is_overlong_sequence(cp, length)){
- // Passed! Return here.
- code_point = cp;
- ++it;
- return UTF8_OK;
- }
- else
- err = OVERLONG_SEQUENCE;
- }
- else
- err = INVALID_CODE_POINT;
- }
-
- // Failure branch - restore the original value of the iterator
- it = original_it;
- return err;
- }
-
- template <typename octet_iterator>
- inline utf_error validate_next(octet_iterator& it, octet_iterator end) {
- uint32_t ignored;
- return utf8::internal::validate_next(it, end, ignored);
- }
-
-} // namespace internal
-
- /// The library API - functions intended to be called by the users
-
- // Byte order mark
- const uint8_t bom[] = {0xef, 0xbb, 0xbf};
-
- template <typename octet_iterator>
- octet_iterator find_invalid(octet_iterator start, octet_iterator end)
- {
- octet_iterator result = start;
- while (result != end) {
- utf8::internal::utf_error err_code = utf8::internal::validate_next(result, end);
- if (err_code != internal::UTF8_OK)
- return result;
- }
- return result;
- }
-
- template <typename octet_iterator>
- inline bool is_valid(octet_iterator start, octet_iterator end)
- {
- return (utf8::find_invalid(start, end) == end);
- }
-
- template <typename octet_iterator>
- inline bool starts_with_bom (octet_iterator it, octet_iterator end)
- {
- return (
- ((it != end) && (utf8::internal::mask8(*it++)) == bom[0]) &&
- ((it != end) && (utf8::internal::mask8(*it++)) == bom[1]) &&
- ((it != end) && (utf8::internal::mask8(*it)) == bom[2])
- );
- }
-
- //Deprecated in release 2.3
- template <typename octet_iterator>
- inline bool is_bom (octet_iterator it)
- {
- return (
- (utf8::internal::mask8(*it++)) == bom[0] &&
- (utf8::internal::mask8(*it++)) == bom[1] &&
- (utf8::internal::mask8(*it)) == bom[2]
- );
- }
-} // namespace utf8
-
-#endif // header guard
-
-
diff --git a/src/utf8/unchecked.h b/src/utf8/unchecked.h
deleted file mode 100644
index cb24271..0000000
--- a/src/utf8/unchecked.h
+++ /dev/null
@@ -1,228 +0,0 @@
-// Copyright 2006 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include "core.h"
-
-namespace utf8
-{
- namespace unchecked
- {
- template <typename octet_iterator>
- octet_iterator append(uint32_t cp, octet_iterator result)
- {
- if (cp < 0x80) // one octet
- *(result++) = static_cast<uint8_t>(cp);
- else if (cp < 0x800) { // two octets
- *(result++) = static_cast<uint8_t>((cp >> 6) | 0xc0);
- *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
- }
- else if (cp < 0x10000) { // three octets
- *(result++) = static_cast<uint8_t>((cp >> 12) | 0xe0);
- *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
- *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
- }
- else { // four octets
- *(result++) = static_cast<uint8_t>((cp >> 18) | 0xf0);
- *(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f)| 0x80);
- *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
- *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
- }
- return result;
- }
-
- template <typename octet_iterator>
- uint32_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) {
- case 1:
- break;
- case 2:
- it++;
- cp = ((cp << 6) & 0x7ff) + ((*it) & 0x3f);
- break;
- case 3:
- ++it;
- cp = ((cp << 12) & 0xffff) + ((utf8::internal::mask8(*it) << 6) & 0xfff);
- ++it;
- cp += (*it) & 0x3f;
- break;
- case 4:
- ++it;
- cp = ((cp << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff);
- ++it;
- cp += (utf8::internal::mask8(*it) << 6) & 0xfff;
- ++it;
- cp += (*it) & 0x3f;
- break;
- }
- ++it;
- return cp;
- }
-
- template <typename octet_iterator>
- uint32_t peek_next(octet_iterator it)
- {
- return utf8::unchecked::next(it);
- }
-
- template <typename octet_iterator>
- uint32_t prior(octet_iterator& it)
- {
- while (utf8::internal::is_trail(*(--it))) ;
- octet_iterator temp = it;
- return utf8::unchecked::next(temp);
- }
-
- // Deprecated in versions that include prior, but only for the sake of consistency (see utf8::previous)
- template <typename octet_iterator>
- inline uint32_t previous(octet_iterator& it)
- {
- return utf8::unchecked::prior(it);
- }
-
- template <typename octet_iterator, typename distance_type>
- void advance (octet_iterator& it, distance_type n)
- {
- for (distance_type i = 0; i < n; ++i)
- utf8::unchecked::next(it);
- }
-
- template <typename octet_iterator>
- typename std::iterator_traits<octet_iterator>::difference_type
- distance (octet_iterator first, octet_iterator last)
- {
- typename std::iterator_traits<octet_iterator>::difference_type 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)
- {
- while (start != end) {
- uint32_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++);
- cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
- }
- result = utf8::unchecked::append(cp, result);
- }
- return result;
- }
-
- template <typename u16bit_iterator, typename octet_iterator>
- u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
- {
- while (start < end) {
- uint32_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);
- }
- else
- *result++ = static_cast<uint16_t>(cp);
- }
- return result;
- }
-
- template <typename octet_iterator, typename u32bit_iterator>
- octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
- {
- while (start != end)
- result = utf8::unchecked::append(*(start++), result);
-
- return result;
- }
-
- template <typename octet_iterator, typename u32bit_iterator>
- u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
- {
- while (start < end)
- (*result++) = utf8::unchecked::next(start);
-
- return result;
- }
-
- // The iterator class
- template <typename octet_iterator>
- class iterator : public std::iterator <std::bidirectional_iterator_tag, uint32_t> {
- octet_iterator it;
- public:
- 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
- {
- octet_iterator temp = it;
- return utf8::unchecked::next(temp);
- }
- bool operator == (const iterator& rhs) const
- {
- return (it == rhs.it);
- }
- bool operator != (const iterator& rhs) const
- {
- return !(operator == (rhs));
- }
- iterator& operator ++ ()
- {
- ::std::advance(it, utf8::internal::sequence_length(it));
- return *this;
- }
- iterator operator ++ (int)
- {
- iterator temp = *this;
- ::std::advance(it, utf8::internal::sequence_length(it));
- return temp;
- }
- iterator& operator -- ()
- {
- utf8::unchecked::prior(it);
- return *this;
- }
- iterator operator -- (int)
- {
- iterator temp = *this;
- utf8::unchecked::prior(it);
- return temp;
- }
- }; // class iterator
-
- } // namespace utf8::unchecked
-} // namespace utf8
-
-
-#endif // header guard
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 08:43:26 +0000