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Boost.Filesystem v4 will contain breaking changes from v3 that are required for better compatibility with C++17 std::filesystem. It will also remove the deprecated features of v3. Updated docs to reflect the differences between v3 and v4. Updated tests to verify both v3 and v4 where the differences are present.
73 lines
3.1 KiB
C++
73 lines
3.1 KiB
C++
// test_codecvt.hpp ------------------------------------------------------------------//
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// Copyright Beman Dawes 2009, 2010
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// Distributed under the Boost Software License, Version 1.0.
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// See http://www.boost.org/LICENSE_1_0.txt
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// Library home page: http://www.boost.org/libs/filesystem
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#ifndef BOOST_FILESYSTEM_TEST_CODECVT_HPP
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#define BOOST_FILESYSTEM_TEST_CODECVT_HPP
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#include <boost/filesystem/config.hpp>
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#include <locale>
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#include <cwchar> // for mbstate_t
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//------------------------------------------------------------------------------------//
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// //
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// class test_codecvt //
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// //
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// Warning: partial implementation; even do_in and do_out only partially meet the //
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// standard library specifications as the "to" buffer must hold the entire result. //
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// //
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// The value of a wide character is the value of the corresponding narrow character //
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// plus 1. This ensures that compares against expected values will fail if the //
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// code conversion did not occur as expected. //
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// //
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//------------------------------------------------------------------------------------//
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class test_codecvt :
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public std::codecvt< wchar_t, char, std::mbstate_t >
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{
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public:
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explicit test_codecvt() :
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std::codecvt< wchar_t, char, std::mbstate_t >()
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{
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}
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protected:
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virtual bool do_always_noconv() const throw() { return false; }
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virtual int do_encoding() const throw() { return 0; }
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virtual std::codecvt_base::result do_in(std::mbstate_t&, const char* from, const char* from_end, const char*& from_next, wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const
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{
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for (; from != from_end && to != to_end; ++from, ++to)
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*to = wchar_t(*from + 1);
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if (to == to_end)
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return error;
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*to = L'\0';
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from_next = from;
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to_next = to;
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return ok;
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}
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virtual std::codecvt_base::result do_out(std::mbstate_t&, const wchar_t* from, const wchar_t* from_end, const wchar_t*& from_next, char* to, char* to_end, char*& to_next) const
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{
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for (; from != from_end && to != to_end; ++from, ++to)
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*to = static_cast< char >(*from - 1);
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if (to == to_end)
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return error;
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*to = '\0';
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from_next = from;
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to_next = to;
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return ok;
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}
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virtual std::codecvt_base::result do_unshift(std::mbstate_t&, char* /*from*/, char* /*to*/, char*& /*next*/) const { return ok; }
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virtual int do_length(std::mbstate_t&, const char* /*from*/, const char* /*from_end*/, std::size_t /*max*/) const { return 0; }
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virtual int do_max_length() const throw() { return 0; }
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};
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#endif // BOOST_FILESYSTEM_TEST_CODECVT_HPP
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