64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/utils/port/wstring_convert.h"
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char disable_linker_warning_about_empty_file_wstring_convert_cpp TD_UNUSED;
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#if TD_PORT_WINDOWS
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#define _SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING
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#include "td/utils/port/wstring_convert.h"
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#include <codecvt>
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#include <locale>
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#include <utility>
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namespace td {
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namespace detail {
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template <class Facet>
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class UsableFacet : public Facet {
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public:
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template <class... Args>
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explicit UsableFacet(Args &&... args) : Facet(std::forward<Args>(args)...) {
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}
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~UsableFacet() = default;
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};
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} // namespace detail
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Result<std::wstring> to_wstring(Slice slice) {
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// TODO(perf): optimize
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std::wstring_convert<detail::UsableFacet<std::codecvt_utf8_utf16<wchar_t>>> converter;
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auto res = converter.from_bytes(slice.begin(), slice.end());
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if (converter.converted() != slice.size()) {
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return Status::Error("Wrong encoding");
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}
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return res;
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}
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Result<string> from_wstring(const wchar_t *begin, size_t size) {
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std::wstring_convert<detail::UsableFacet<std::codecvt_utf8_utf16<wchar_t>>> converter;
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auto res = converter.to_bytes(begin, begin + size);
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if (converter.converted() != size) {
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return Status::Error("Wrong encoding");
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}
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return res;
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}
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Result<string> from_wstring(const std::wstring &str) {
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return from_wstring(str.data(), str.size());
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}
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Result<string> from_wstring(const wchar_t *begin) {
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return from_wstring(begin, wcslen(begin));
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}
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} // namespace td
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#endif
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