96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
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// Copyright (c) 2022 Klemens D. Morgenstern
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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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#ifndef BOOST_PROCESS_V2_DETAIL_UTF8_HPP
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#define BOOST_PROCESS_V2_DETAIL_UTF8_HPP
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#include <boost/process/v2/detail/config.hpp>
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#include <boost/process/v2/detail/throw_error.hpp>
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BOOST_PROCESS_V2_BEGIN_NAMESPACE
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namespace detail
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{
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BOOST_PROCESS_V2_DECL std::size_t size_as_utf8(const wchar_t * in, std::size_t size, error_code & ec);
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BOOST_PROCESS_V2_DECL std::size_t size_as_wide(const char * in, std::size_t size, error_code & ec);
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BOOST_PROCESS_V2_DECL std::size_t convert_to_utf8(const wchar_t * in, std::size_t size,
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char * out, std::size_t max_size, error_code & ec);
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BOOST_PROCESS_V2_DECL std::size_t convert_to_wide(const char * in, std::size_t size,
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wchar_t * out, std::size_t max_size, error_code & ec);
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template<typename CharOut, typename Traits = std::char_traits<CharOut>,
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typename Allocator = std::allocator<CharOut>, typename CharIn,
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typename = typename std::enable_if<std::is_same<CharOut, CharIn>::value>::type>
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BOOST_PROCESS_V2_DECL
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std::basic_string<CharOut, Traits, Allocator> conv_string(
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const CharIn * data, std::size_t size,
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const Allocator allocator = Allocator{})
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{
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return std::basic_string<CharOut, Traits, Allocator>(data, size, allocator);
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}
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template<typename CharOut, typename Traits = std::char_traits<CharOut>,
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typename Allocator = std::allocator<CharOut>,
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typename = typename std::enable_if<std::is_same<CharOut, char>::value>::type>
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BOOST_PROCESS_V2_DECL
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std::basic_string<CharOut, Traits, Allocator> conv_string(
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const wchar_t * data, std::size_t size,
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const Allocator allocator = Allocator{})
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{
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error_code ec;
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const auto req_size = size_as_utf8(data, size, ec);
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if (ec)
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detail::throw_error(ec, "size_as_utf8");
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std::basic_string<CharOut, Traits, Allocator> res(allocator);
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res.resize(req_size);
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auto res_size = convert_to_utf8(data, size, &res.front(), req_size, ec);
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if (ec)
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detail::throw_error(ec, "convert_to_utf8");
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res.resize(res_size);
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return res;
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}
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template<typename CharOut, typename Traits = std::char_traits<CharOut>,
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typename Allocator = std::allocator<CharOut>,
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typename = typename std::enable_if<std::is_same<CharOut, wchar_t>::value>::type>
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BOOST_PROCESS_V2_DECL
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std::basic_string<CharOut, Traits, Allocator> conv_string(
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const char * data, std::size_t size,
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const Allocator allocator = Allocator{})
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{
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error_code ec;
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const auto req_size = size_as_wide(data, size, ec);
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if (ec)
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detail::throw_error(ec, "size_as_wide");
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std::basic_string<CharOut, Traits, Allocator> res(allocator);
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res.resize(req_size);
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auto res_size = convert_to_wide(data, size, &res.front(), req_size, ec);
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if (ec)
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detail::throw_error(ec, "convert_to_wide");
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res.resize(res_size);
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return res;
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}
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}
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BOOST_PROCESS_V2_END_NAMESPACE
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#if defined(BOOST_PROCESS_V2_HEADER_ONLY)
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#include <boost/process/v2/detail/impl/utf8.ipp>
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#endif
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#endif //BOOST_PROCESS_V2_DETAIL_UTF8_HPP
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