#ifndef BOOST_SYSTEM_DETAIL_ERROR_CATEGORY_IMPL_HPP_INCLUDED
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#define BOOST_SYSTEM_DETAIL_ERROR_CATEGORY_IMPL_HPP_INCLUDED
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// Copyright Beman Dawes 2006, 2007
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// Copyright Christoper Kohlhoff 2007
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// Copyright Peter Dimov 2017, 2018
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//
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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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//
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// See library home page at http://www.boost.org/libs/system
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#include <boost/system/detail/error_category.hpp>
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#include <boost/system/detail/error_condition.hpp>
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#include <boost/system/detail/error_code.hpp>
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#include <boost/config.hpp>
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#include <string>
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#include <cstring>
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namespace boost
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{
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namespace system
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{
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// error_category default implementation
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inline error_condition error_category::default_error_condition( int ev ) const BOOST_NOEXCEPT
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{
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return error_condition( ev, *this );
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}
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inline bool error_category::equivalent( int code, const error_condition & condition ) const BOOST_NOEXCEPT
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{
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return default_error_condition( code ) == condition;
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}
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inline bool error_category::equivalent( const error_code & code, int condition ) const BOOST_NOEXCEPT
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{
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return *this == code.category() && code.value() == condition;
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}
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inline char const * error_category::message( int ev, char * buffer, std::size_t len ) const BOOST_NOEXCEPT
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{
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if( len == 0 )
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{
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return buffer;
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}
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if( len == 1 )
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{
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buffer[0] = 0;
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return buffer;
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}
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#if !defined(BOOST_NO_EXCEPTIONS)
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try
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#endif
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{
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std::string m = this->message( ev );
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# if defined( BOOST_MSVC )
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# pragma warning( push )
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# pragma warning( disable: 4996 )
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# elif defined(__clang__) && defined(__has_warning)
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# pragma clang diagnostic push
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# if __has_warning("-Wdeprecated-declarations")
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# pragma clang diagnostic ignored "-Wdeprecated-declarations"
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# endif
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# endif
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std::strncpy( buffer, m.c_str(), len - 1 );
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buffer[ len-1 ] = 0;
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# if defined( BOOST_MSVC )
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# pragma warning( pop )
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# elif defined(__clang__) && defined(__has_warning)
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# pragma clang diagnostic pop
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# endif
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return buffer;
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}
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#if !defined(BOOST_NO_EXCEPTIONS)
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catch( ... )
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{
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return "Message text unavailable";
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}
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#endif
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}
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} // namespace system
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} // namespace boost
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// interoperability with std::error_code, std::error_condition
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#if defined(BOOST_SYSTEM_HAS_SYSTEM_ERROR)
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#include <boost/system/detail/to_std_category.hpp>
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inline boost::system::error_category::operator std::error_category const & () const
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{
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return boost::system::detail::to_std_category( *this );
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}
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#endif // #if defined(BOOST_SYSTEM_HAS_SYSTEM_ERROR)
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#endif // #ifndef BOOST_SYSTEM_DETAIL_ERROR_CATEGORY_IMPL_HPP_INCLUDED
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