mirror of
https://github.com/tfussell/xlnt.git
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remove third-party utf lib
This commit is contained in:
Thomas Fussell
parent
40fc54f55e
commit
2996c4b64b
34
third-party/utfcpp/utf8.h
vendored
34
third-party/utfcpp/utf8.h
vendored
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@ -1,34 +0,0 @@
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// Copyright 2006 Nemanja Trifunovic
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/*
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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.
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*/
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#ifndef UTF8_FOR_CPP_2675DCD0_9480_4c0c_B92A_CC14C027B731
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#define UTF8_FOR_CPP_2675DCD0_9480_4c0c_B92A_CC14C027B731
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#include "utf8/checked.h"
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#include "utf8/unchecked.h"
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#endif // header guard
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327
third-party/utfcpp/utf8/checked.h
vendored
327
third-party/utfcpp/utf8/checked.h
vendored
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@ -1,327 +0,0 @@
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// Copyright 2006 Nemanja Trifunovic
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/*
|
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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.
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*/
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#ifndef UTF8_FOR_CPP_CHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
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#define UTF8_FOR_CPP_CHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
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#include "core.h"
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#include <stdexcept>
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namespace utf8
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{
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// Base for the exceptions that may be thrown from the library
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class exception : public ::std::exception {
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};
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// Exceptions that may be thrown from the library functions.
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class invalid_code_point : public exception {
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uint32_t cp;
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public:
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invalid_code_point(uint32_t cp) : cp(cp) {}
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virtual const char* what() const throw() { return "Invalid code point"; }
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uint32_t code_point() const {return cp;}
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};
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class invalid_utf8 : public exception {
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uint8_t u8;
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public:
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invalid_utf8 (uint8_t u) : u8(u) {}
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virtual const char* what() const throw() { return "Invalid UTF-8"; }
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uint8_t utf8_octet() const {return u8;}
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};
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class invalid_utf16 : public exception {
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uint16_t u16;
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public:
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invalid_utf16 (uint16_t u) : u16(u) {}
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virtual const char* what() const throw() { return "Invalid UTF-16"; }
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uint16_t utf16_word() const {return u16;}
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};
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class not_enough_room : public exception {
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public:
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virtual const char* what() const throw() { return "Not enough space"; }
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};
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/// The library API - functions intended to be called by the users
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template <typename octet_iterator>
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octet_iterator append(uint32_t cp, octet_iterator result)
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{
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if (!utf8::internal::is_code_point_valid(cp))
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throw invalid_code_point(cp);
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if (cp < 0x80) // one octet
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*(result++) = static_cast<uint8_t>(cp);
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else if (cp < 0x800) { // two octets
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*(result++) = static_cast<uint8_t>((cp >> 6) | 0xc0);
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*(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
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}
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else if (cp < 0x10000) { // three octets
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*(result++) = static_cast<uint8_t>((cp >> 12) | 0xe0);
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*(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
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*(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
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}
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else { // four octets
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*(result++) = static_cast<uint8_t>((cp >> 18) | 0xf0);
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*(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f) | 0x80);
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*(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
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*(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
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}
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return result;
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}
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template <typename octet_iterator, typename output_iterator>
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output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out, uint32_t replacement)
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{
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while (start != end) {
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octet_iterator sequence_start = start;
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internal::utf_error err_code = utf8::internal::validate_next(start, end);
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switch (err_code) {
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case internal::UTF8_OK :
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for (octet_iterator it = sequence_start; it != start; ++it)
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*out++ = *it;
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break;
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case internal::NOT_ENOUGH_ROOM:
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throw not_enough_room();
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case internal::INVALID_LEAD:
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out = utf8::append (replacement, out);
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++start;
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break;
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case internal::INCOMPLETE_SEQUENCE:
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case internal::OVERLONG_SEQUENCE:
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case internal::INVALID_CODE_POINT:
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out = utf8::append (replacement, out);
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++start;
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// just one replacement mark for the sequence
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while (start != end && utf8::internal::is_trail(*start))
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++start;
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break;
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}
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}
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return out;
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}
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template <typename octet_iterator, typename output_iterator>
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inline output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out)
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{
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static const uint32_t replacement_marker = utf8::internal::mask16(0xfffd);
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return utf8::replace_invalid(start, end, out, replacement_marker);
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}
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template <typename octet_iterator>
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uint32_t next(octet_iterator& it, octet_iterator end)
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{
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uint32_t cp = 0;
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internal::utf_error err_code = utf8::internal::validate_next(it, end, cp);
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switch (err_code) {
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case internal::UTF8_OK :
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break;
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case internal::NOT_ENOUGH_ROOM :
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throw not_enough_room();
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case internal::INVALID_LEAD :
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case internal::INCOMPLETE_SEQUENCE :
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case internal::OVERLONG_SEQUENCE :
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throw invalid_utf8(*it);
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case internal::INVALID_CODE_POINT :
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throw invalid_code_point(cp);
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}
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return cp;
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}
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template <typename octet_iterator>
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uint32_t peek_next(octet_iterator it, octet_iterator end)
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{
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return utf8::next(it, end);
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}
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template <typename octet_iterator>
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uint32_t prior(octet_iterator& it, octet_iterator start)
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{
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// can't do much if it == start
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if (it == start)
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throw not_enough_room();
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octet_iterator end = it;
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// Go back until we hit either a lead octet or start
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while (utf8::internal::is_trail(*(--it)))
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if (it == start)
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throw invalid_utf8(*it); // error - no lead byte in the sequence
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return utf8::peek_next(it, end);
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}
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/// Deprecated in versions that include "prior"
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template <typename octet_iterator>
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uint32_t previous(octet_iterator& it, octet_iterator pass_start)
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{
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octet_iterator end = it;
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while (utf8::internal::is_trail(*(--it)))
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if (it == pass_start)
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throw invalid_utf8(*it); // error - no lead byte in the sequence
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octet_iterator temp = it;
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return utf8::next(temp, end);
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}
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template <typename octet_iterator, typename distance_type>
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void advance (octet_iterator& it, distance_type n, octet_iterator end)
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{
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for (distance_type i = 0; i < n; ++i)
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utf8::next(it, end);
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}
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template <typename octet_iterator>
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typename std::iterator_traits<octet_iterator>::difference_type
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distance (octet_iterator first, octet_iterator last)
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{
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typename std::iterator_traits<octet_iterator>::difference_type dist;
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for (dist = 0; first < last; ++dist)
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utf8::next(first, last);
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return dist;
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}
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template <typename u16bit_iterator, typename octet_iterator>
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octet_iterator utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result)
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{
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while (start != end) {
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uint32_t cp = utf8::internal::mask16(*start++);
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// Take care of surrogate pairs first
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if (utf8::internal::is_lead_surrogate(cp)) {
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if (start != end) {
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uint32_t trail_surrogate = utf8::internal::mask16(*start++);
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if (utf8::internal::is_trail_surrogate(trail_surrogate))
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cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
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else
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throw invalid_utf16(static_cast<uint16_t>(trail_surrogate));
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}
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else
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throw invalid_utf16(static_cast<uint16_t>(cp));
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}
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// Lone trail surrogate
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else if (utf8::internal::is_trail_surrogate(cp))
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throw invalid_utf16(static_cast<uint16_t>(cp));
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result = utf8::append(cp, result);
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}
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return result;
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}
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template <typename u16bit_iterator, typename octet_iterator>
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u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
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{
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while (start != end) {
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uint32_t cp = utf8::next(start, end);
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if (cp > 0xffff) { //make a surrogate pair
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*result++ = static_cast<uint16_t>((cp >> 10) + internal::LEAD_OFFSET);
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*result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN);
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}
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else
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*result++ = static_cast<uint16_t>(cp);
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}
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return result;
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}
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template <typename octet_iterator, typename u32bit_iterator>
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octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
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{
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while (start != end)
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result = utf8::append(*(start++), result);
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return result;
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}
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template <typename octet_iterator, typename u32bit_iterator>
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u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
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{
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while (start != end)
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(*result++) = utf8::next(start, end);
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return result;
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}
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// The iterator class
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template <typename octet_iterator>
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class iterator : public std::iterator <std::bidirectional_iterator_tag, uint32_t> {
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octet_iterator it;
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octet_iterator range_start;
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octet_iterator range_end;
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public:
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iterator () {}
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explicit iterator (const octet_iterator& octet_it,
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const octet_iterator& range_start,
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const octet_iterator& range_end) :
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it(octet_it), range_start(range_start), range_end(range_end)
|
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{
|
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if (it < range_start || it > range_end)
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throw std::out_of_range("Invalid utf-8 iterator position");
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}
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// the default "big three" are OK
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octet_iterator base () const { return it; }
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uint32_t operator * () const
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{
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octet_iterator temp = it;
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return utf8::next(temp, range_end);
|
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}
|
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bool operator == (const iterator& rhs) const
|
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{
|
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if (range_start != rhs.range_start || range_end != rhs.range_end)
|
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throw std::logic_error("Comparing utf-8 iterators defined with different ranges");
|
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return (it == rhs.it);
|
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}
|
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bool operator != (const iterator& rhs) const
|
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{
|
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return !(operator == (rhs));
|
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}
|
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iterator& operator ++ ()
|
||||
{
|
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utf8::next(it, range_end);
|
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return *this;
|
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}
|
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iterator operator ++ (int)
|
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{
|
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iterator temp = *this;
|
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utf8::next(it, range_end);
|
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return temp;
|
||||
}
|
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iterator& operator -- ()
|
||||
{
|
||||
utf8::prior(it, range_start);
|
||||
return *this;
|
||||
}
|
||||
iterator operator -- (int)
|
||||
{
|
||||
iterator temp = *this;
|
||||
utf8::prior(it, range_start);
|
||||
return temp;
|
||||
}
|
||||
}; // class iterator
|
||||
|
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} // namespace utf8
|
||||
|
||||
#endif //header guard
|
||||
|
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|
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329
third-party/utfcpp/utf8/core.h
vendored
329
third-party/utfcpp/utf8/core.h
vendored
|
|
@ -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
|
||||
|
||||
|
||||
228
third-party/utfcpp/utf8/unchecked.h
vendored
228
third-party/utfcpp/utf8/unchecked.h
vendored
|
|
@ -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
|
||||
|
||||
Loading…
Reference in New Issue
Block a user