1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980 |
- // Boost.Filesystem mbpath.cpp ---------------------------------------------//
- // (c) Copyright Beman Dawes 2005
- // Use, modification, and distribution is subject to 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)
- // See Boost.Filesystem home page at http://www.boost.org/libs/filesystem
- #include <boost/filesystem/config.hpp>
- # ifdef BOOST_FILESYSTEM_NARROW_ONLY
- # error This compiler or standard library does not support wide-character strings or paths
- # endif
- #include "mbpath.hpp"
- #include <boost/system/system_error.hpp>
- #include <boost/scoped_array.hpp>
- namespace fs = boost::filesystem;
- namespace
- {
- // ISO C calls this "the locale-specific native environment":
- std::locale loc("");
- const std::codecvt<wchar_t, char, std::mbstate_t> *
- cvt( &std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t> >
- ( loc ) );
- }
- namespace user
- {
- mbpath_traits::external_string_type
- mbpath_traits::to_external( const mbpath & ph,
- const internal_string_type & src )
- {
- std::size_t work_size( cvt->max_length() * (src.size()+1) );
- boost::scoped_array<char> work( new char[ work_size ] );
- std::mbstate_t state;
- const internal_string_type::value_type * from_next;
- external_string_type::value_type * to_next;
- if ( cvt->out(
- state, src.c_str(), src.c_str()+src.size(), from_next, work.get(),
- work.get()+work_size, to_next ) != std::codecvt_base::ok )
- boost::throw_exception<fs::basic_filesystem_error<mbpath> >(
- fs::basic_filesystem_error<mbpath>(
- "user::mbpath::to_external conversion error",
- ph, boost::system::error_code( EINVAL, boost::system::errno_ecat ) ) );
- *to_next = '\0';
- return external_string_type( work.get() );
- }
- mbpath_traits::internal_string_type
- mbpath_traits::to_internal( const external_string_type & src )
- {
- std::size_t work_size( src.size()+1 );
- boost::scoped_array<wchar_t> work( new wchar_t[ work_size ] );
- std::mbstate_t state;
- const external_string_type::value_type * from_next;
- internal_string_type::value_type * to_next;
- if ( cvt->in(
- state, src.c_str(), src.c_str()+src.size(), from_next, work.get(),
- work.get()+work_size, to_next ) != std::codecvt_base::ok )
- boost::throw_exception<fs::basic_filesystem_error<mbpath> >(
- fs::basic_filesystem_error<mbpath>(
- "user::mbpath::to_internal conversion error",
- boost::system::error_code( EINVAL, boost::system::errno_ecat ) ) );
- *to_next = L'\0';
- return internal_string_type( work.get() );
- }
- void mbpath_traits::imbue( const std::locale & new_loc )
- {
- loc = new_loc;
- cvt = &std::use_facet
- <std::codecvt<wchar_t, char, std::mbstate_t> >( loc );
- }
- } // namespace user
|