mirror of https://github.com/tfussell/xlnt
86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
// Copyright (c) 2014-2018 Thomas Fussell
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE
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//
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// @license: http://www.opensource.org/licenses/mit-license.php
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// @author: see AUTHORS file
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated"
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#pragma clang diagnostic ignored "-Wweak-vtables"
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#pragma clang diagnostic ignored "-Wsign-conversion"
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#include <utf8.h>
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#pragma clang diagnostic pop
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#include <xlnt/utils/exceptions.hpp>
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#include <detail/unicode.hpp>
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namespace xlnt {
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namespace detail {
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std::u16string utf8_to_utf16(const std::string &utf8_string)
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{
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std::u16string result;
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utf8::utf8to16(utf8_string.begin(), utf8_string.end(), std::back_inserter(result));
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return result;
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}
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std::string utf16_to_utf8(const std::u16string &utf16_string)
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{
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std::string result;
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utf8::utf16to8(utf16_string.begin(), utf16_string.end(), std::back_inserter(result));
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return result;
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}
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std::string latin1_to_utf8(const std::string &latin1)
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{
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std::string utf8;
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for (auto character : latin1)
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{
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if (character >= 0)
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{
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utf8.push_back(character);
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}
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else
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{
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utf8.push_back(static_cast<char>(0xc0 + (character >> 6)));
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utf8.push_back(static_cast<char>(0x80 + (character & 0x3f)));
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}
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}
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return utf8;
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}
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size_t string_length(const std::string &utf8_string)
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{
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auto end_it = utf8::find_invalid(utf8_string.begin(), utf8_string.end());
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if (end_it != utf8_string.end())
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{
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throw xlnt::exception("Invalid UTF-8 encoding detected");
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}
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return static_cast<std::size_t>(utf8::distance(utf8_string.begin(), end_it));
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}
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} // namespace detail
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} // namespace xlnt
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