整理

include/boost/process/v1/detail/windows/locale.hpp

@@ -0,0 +1,114 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+// Copyright (c) 2008 Beman Dawes
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_WINDOWS_LOCALE_HPP_
+#define BOOST_PROCESS_DETAIL_WINDOWS_LOCALE_HPP_
+
+#include <boost/process/v1/detail/config.hpp>
+#include <locale>
+#include <boost/core/ignore_unused.hpp>
+#include <boost/winapi/file_management.hpp>
+#include <boost/winapi/character_code_conversion.hpp>
+
+namespace boost
+{
+namespace process
+{
+BOOST_PROCESS_V1_INLINE namespace v1
+{
+namespace detail
+{
+namespace windows
+{
+
+//copied from boost.filesystem
+class windows_file_codecvt
+   : public std::codecvt< wchar_t, char, std::mbstate_t >
+ {
+ public:
+   explicit windows_file_codecvt(std::size_t refs = 0)
+       : std::codecvt<wchar_t, char, std::mbstate_t>(refs) {}
+ protected:
+
+   bool do_always_noconv() const noexcept override { return false; }
+
+   //  seems safest to assume variable number of characters since we don't
+   //  actually know what codepage is active
+   int do_encoding() const noexcept override { return 0; }
+
+   std::codecvt_base::result do_in(std::mbstate_t& state,
+     const char* from, const char* from_end, const char*& from_next,
+     wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const override
+   {
+     boost::ignore_unused(state);
+
+       auto codepage =
+#if !defined(BOOST_NO_ANSI_APIS)
+               ::boost::winapi::AreFileApisANSI() ?
+               ::boost::winapi::CP_ACP_ :
+#endif
+               ::boost::winapi::CP_OEMCP_;
+
+     int count = 0;
+     if ((count = ::boost::winapi::MultiByteToWideChar(codepage,
+             ::boost::winapi::MB_PRECOMPOSED_, from,
+       static_cast<int>(from_end - from), to, static_cast<int>(to_end - to))) == 0)
+     {
+       return error;  // conversion failed
+     }
+
+     from_next = from_end;
+     to_next = to + count;
+     *to_next = L'\0';
+     return ok;
+  }
+
+   std::codecvt_base::result do_out(std::mbstate_t & state,
+     const wchar_t* from, const wchar_t* from_end, const wchar_t*& from_next,
+     char* to, char* to_end, char*& to_next) const override
+   {
+     boost::ignore_unused(state);
+     auto codepage =
+#if !defined(BOOST_NO_ANSI_APIS)
+                   ::boost::winapi::AreFileApisANSI() ?
+                       ::boost::winapi::CP_ACP_ :
+#endif
+                     ::boost::winapi::CP_OEMCP_;
+     int count = 0;
+
+
+     if ((count = ::boost::winapi::WideCharToMultiByte(codepage,
+                   ::boost::winapi::WC_NO_BEST_FIT_CHARS_, from,
+                  static_cast<int>(from_end - from), to, static_cast<int>(to_end - to), 0, 0)) == 0)
+     {
+       return error;  // conversion failed
+     }
+
+     from_next = from_end;
+     to_next = to + count;
+     *to_next = '\0';
+     return ok;
+   }
+
+   std::codecvt_base::result do_unshift(std::mbstate_t&,
+       char* /*from*/, char* /*to*/, char* & /*next*/) const override { return ok; }
+
+   int do_length(std::mbstate_t&,
+     const char* /*from*/, const char* /*from_end*/, std::size_t /*max*/) const override { return 0; }
+
+   int do_max_length() const noexcept override { return 0; }
+ };
+
+
+
+}
+}
+}
+}
+}
+
+
+#endif /* BOOST_PROCESS_LOCALE_HPP_ */