127 lines
3.2 KiB
C++
127 lines
3.2 KiB
C++
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/*
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* Copyright (C) Nemirtingas
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* This file is part of System.
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*
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* System is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* System is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with System; if not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include "System_internals.h"
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#include "Encoding.hpp"
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#include "utfcpp/utf8.h"
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#include <string.h>
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#include <algorithm>
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namespace System {
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namespace Encoding {
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namespace details {
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template<typename T, size_t s = sizeof(typename T::value_type)>
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struct string_deducer
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{
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static std::string convert_string(T const& str) = delete;
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static std::wstring convert_wstring(T const& str) = delete;
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};
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template<typename T>
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struct string_deducer<T, 1>
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{
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static std::string convert_string(T const& str)
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{
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return std::string(std::begin(str), std::end(str));
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}
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static std::wstring convert_wstring(std::string const& str)
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{
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std::wstring r(std::begin(str), std::end(str));
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return r;
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}
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};
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template<typename T>
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struct string_deducer<T, 2>
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{
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static std::string convert_string(T const& str)
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{
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std::string r;
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utf8::utf16to8(std::begin(str), std::end(str), std::back_inserter(r));
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return r;
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}
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static std::wstring convert_wstring(std::string const& str)
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{
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std::wstring r;
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utf8::utf8to16(std::begin(str), std::end(str), std::back_inserter(r));
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return r;
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}
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};
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template<typename T>
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struct string_deducer<T, 4>
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{
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static std::string convert_string(T const& str)
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{
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std::string r;
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utf8::utf32to8(std::begin(str), std::end(str), std::back_inserter(r));
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return r;
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}
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static std::wstring convert_wstring(std::string const& str)
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{
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std::wstring r;
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utf8::utf8to32(std::begin(str), std::end(str), std::back_inserter(r));
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return r;
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}
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};
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}
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std::wstring Utf8ToWChar(std::string const& str)
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{
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return details::string_deducer<std::wstring>::convert_wstring(str);
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}
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std::u16string Utf8ToUtf16(std::string const& str)
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{
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return utf8::utf8to16(str);
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}
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std::u32string Utf8ToUtf32(std::string const& str)
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{
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return utf8::utf8to32(str);
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}
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std::string WCharToUtf8(std::wstring const& str)
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{
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return details::string_deducer<std::wstring>::convert_string(str);
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}
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std::string Utf16ToUtf8(std::u16string const& str)
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{
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return utf8::utf16to8(str);
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}
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std::string Utf32ToUtf8(std::u32string const& str)
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{
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return utf8::utf32to8(str);
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}
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size_t EncodedLength(std::string const& str)
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{
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return utf8::distance(str.begin(), str.end());
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}
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}// namespace Encoding
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}// namespace System
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