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// (C) Copyright Jonathan Turkanis 2003.
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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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// See http://www.boost.org/libs/iostreams for documentation.
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#ifndef BOOST_IOSTREAMS_CHAR_TRAITS_HPP_INCLUDED
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#define BOOST_IOSTREAMS_CHAR_TRAITS_HPP_INCLUDED
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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#include <boost/config.hpp>
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#include <cstddef>
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#include <cstdio> // EOF.
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#include <string> // std::char_traits.
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#include <boost/iostreams/detail/char_traits.hpp>
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#include <boost/iostreams/detail/config/wide_streams.hpp>
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#ifndef BOOST_IOSTREAMS_NO_WIDE_STREAMS
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# include <cwchar>
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#endif
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#ifdef BOOST_NO_STDC_NAMESPACE
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namespace std { using ::wint_t; }
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#endif
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namespace boost { namespace iostreams {
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// Dinkumware that comes with QNX Momentics 6.3.0, 4.0.2, incorrectly defines the
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// EOF and WEOF macros to not std:: qualify the wint_t type (and so does
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// Sun C++ 5.8 + STLport 4). Fix by placing the def in this scope.
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// NOTE: Use BOOST_WORKAROUND?
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#if (defined(__QNX__) && defined(BOOST_DINKUMWARE_STDLIB)) \
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|| defined(__SUNPRO_CC)
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using ::std::wint_t;
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#endif
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const int WOULD_BLOCK = (int) (EOF - 1);
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#ifndef BOOST_IOSTREAMS_NO_WIDE_STREAMS
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const std::wint_t WWOULD_BLOCK = (std::wint_t) (WEOF - 1);
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#endif
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template<typename Ch>
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struct char_traits;
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template<>
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struct char_traits<char> : BOOST_IOSTREAMS_CHAR_TRAITS(char) {
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static char newline() { return '\n'; }
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static int good() { return '\n'; }
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static int would_block() { return WOULD_BLOCK; }
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static bool is_good(int c) { return c != EOF && c != WOULD_BLOCK; }
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static bool is_eof(int c) { return c == EOF; }
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static bool would_block(int c) { return c == WOULD_BLOCK; }
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};
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#ifndef BOOST_IOSTREAMS_NO_WIDE_STREAMS
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template<>
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struct char_traits<wchar_t> : std::char_traits<wchar_t> {
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static wchar_t newline() { return L'\n'; }
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static std::wint_t good() { return L'\n'; }
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static std::wint_t would_block() { return WWOULD_BLOCK; }
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static bool is_good(std::wint_t c) { return c != WEOF && c != WWOULD_BLOCK; }
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static bool is_eof(std::wint_t c) { return c == WEOF; }
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static bool would_block(std::wint_t c) { return c == WWOULD_BLOCK; }
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};
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#endif
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} } // End namespaces iostreams, boost.
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#endif // #ifndef BOOST_IOSTREAMS_CHAR_TRAITS_HPP_INCLUDED
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