246 lines
6.7 KiB
C++
246 lines
6.7 KiB
C++
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// Copyright (c) 2016 Klemens D. Morgenstern
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// Copyright (c) 2008 Beman Dawes
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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_LOCALE_HPP_
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#define BOOST_PROCESS_LOCALE_HPP_
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#include <system_error>
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#include <boost/process/detail/config.hpp>
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#if defined(BOOST_WINDOWS_API)
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#include <boost/process/detail/windows/locale.hpp>
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# elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) \
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|| defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__HAIKU__)
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#include <codecvt>
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#endif
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#include <locale>
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namespace boost
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{
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namespace process
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{
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namespace detail
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{
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class codecvt_category_t : public std::error_category
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{
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public:
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codecvt_category_t() = default;
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const char* name() const noexcept override {return "codecvt";}
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std::string message(int ev) const override
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{
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std::string str;
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switch (ev)
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{
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case std::codecvt_base::ok:
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str = "ok";
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break;
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case std::codecvt_base::partial:
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str = "partial";
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break;
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case std::codecvt_base::error:
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str = "error";
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break;
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case std::codecvt_base::noconv:
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str = "noconv";
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break;
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default:
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str = "unknown error";
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}
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return str;
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}
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};
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}
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///Internally used error cateory for code conversion.
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inline const std::error_category& codecvt_category()
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{
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static const ::boost::process::detail::codecvt_category_t cat;
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return cat;
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}
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namespace detail
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{
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//copied from boost.filesystem
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inline std::locale default_locale()
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{
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# if defined(BOOST_WINDOWS_API)
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std::locale global_loc = std::locale();
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return std::locale(global_loc, new boost::process::detail::windows::windows_file_codecvt);
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# elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) \
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|| defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__HAIKU__)
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std::locale global_loc = std::locale();
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return std::locale(global_loc, new std::codecvt_utf8<wchar_t>);
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# else // Other POSIX
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// Return a default locale object.
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return std::locale();
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# endif
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}
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inline std::locale& process_locale()
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{
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static std::locale loc(default_locale());
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return loc;
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}
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}
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///The internally used type for code conversion.
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typedef std::codecvt<wchar_t, char, std::mbstate_t> codecvt_type;
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///Get a reference to the currently used code converter.
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inline const codecvt_type& codecvt()
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{
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return std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t>>(
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detail::process_locale());
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}
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///Set the locale of the library.
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inline std::locale imbue(const std::locale& loc)
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{
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std::locale temp(detail::process_locale());
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detail::process_locale() = loc;
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return temp;
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}
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namespace detail
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{
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inline std::size_t convert(const char* from,
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const char* from_end,
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wchar_t* to, wchar_t* to_end,
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const ::boost::process::codecvt_type & cvt =
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::boost::process::codecvt())
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{
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std::mbstate_t state = std::mbstate_t(); // perhaps unneeded, but cuts bug reports
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const char* from_next;
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wchar_t* to_next;
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auto res = cvt.in(state, from, from_end, from_next,
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to, to_end, to_next);
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if (res != std::codecvt_base::ok)
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throw process_error(res, ::boost::process::codecvt_category(),
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"boost::process codecvt to wchar_t");
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return to_next - to;
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}
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inline std::size_t convert(const wchar_t* from,
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const wchar_t* from_end,
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char* to, char* to_end,
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const ::boost::process::codecvt_type & cvt =
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::boost::process::codecvt())
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{
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std::mbstate_t state = std::mbstate_t(); // perhaps unneeded, but cuts bug reports
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const wchar_t* from_next;
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char* to_next;
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std::codecvt_base::result res;
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if ((res=cvt.out(state, from, from_end, from_next,
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to, to_end, to_next)) != std::codecvt_base::ok)
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throw process_error(res, ::boost::process::codecvt_category(),
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"boost::process codecvt to char");
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return to_next - to;
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}
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inline std::wstring convert(const std::string & st,
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const ::boost::process::codecvt_type & cvt =
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::boost::process::codecvt())
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{
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std::wstring out(st.size() + 10, ' '); //just to be sure
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auto sz = convert(st.c_str(), st.c_str() + st.size(),
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&out.front(), &out.back(), cvt);
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out.resize(sz);
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return out;
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}
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inline std::string convert(const std::wstring & st,
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const ::boost::process::codecvt_type & cvt =
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::boost::process::codecvt())
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{
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std::string out(st.size() * 2, ' '); //just to be sure
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auto sz = convert(st.c_str(), st.c_str() + st.size(),
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&out.front(), &out.back(), cvt);
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out.resize(sz);
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return out;
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}
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inline std::vector<wchar_t> convert(const std::vector<char> & st,
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const ::boost::process::codecvt_type & cvt =
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::boost::process::codecvt())
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{
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std::vector<wchar_t> out(st.size() + 10); //just to be sure
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auto sz = convert(st.data(), st.data() + st.size(),
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&out.front(), &out.back(), cvt);
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out.resize(sz);
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return out;
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}
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inline std::vector<char> convert(const std::vector<wchar_t> & st,
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const ::boost::process::codecvt_type & cvt =
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::boost::process::codecvt())
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{
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std::vector<char> out(st.size() * 2); //just to be sure
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auto sz = convert(st.data(), st.data() + st.size(),
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&out.front(), &out.back(), cvt);
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out.resize(sz);
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return out;
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}
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inline std::wstring convert(const char *begin, const char* end,
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const ::boost::process::codecvt_type & cvt =
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::boost::process::codecvt())
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{
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auto size = end-begin;
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std::wstring out(size + 10, ' '); //just to be sure
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using namespace std;
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auto sz = convert(begin, end,
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&out.front(), &out.back(), cvt);
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out.resize(sz);
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return out;
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}
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inline std::string convert(const wchar_t * begin, const wchar_t *end,
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const ::boost::process::codecvt_type & cvt =
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::boost::process::codecvt())
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{
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auto size = end-begin;
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std::string out(size * 2, ' '); //just to be sure
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auto sz = convert(begin, end ,
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&out.front(), &out.back(), cvt);
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out.resize(sz);
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return out;
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}
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}
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}
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}
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#endif /* BOOST_PROCESS_LOCALE_HPP_ */
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