113 lines
2.9 KiB
C++
113 lines
2.9 KiB
C++
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#ifndef BOOST_LEAF_COMMON_HPP_INCLUDED
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#define BOOST_LEAF_COMMON_HPP_INCLUDED
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// Copyright 2018-2022 Emil Dotchevski and Reverge Studios, Inc.
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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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#include <boost/leaf/config.hpp>
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#include <boost/leaf/detail/demangle.hpp>
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#include <iosfwd>
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#if BOOST_LEAF_CFG_STD_STRING
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# include <string>
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#endif
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#include <cerrno>
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#if BOOST_LEAF_CFG_WIN32
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# include <windows.h>
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# include <cstring>
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# ifdef min
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# undef min
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# endif
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# ifdef max
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# undef max
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# endif
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#endif
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namespace boost { namespace leaf {
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struct BOOST_LEAF_SYMBOL_VISIBLE e_api_function { char const * value; };
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#if BOOST_LEAF_CFG_STD_STRING
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struct BOOST_LEAF_SYMBOL_VISIBLE e_file_name
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{
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std::string value;
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};
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#else
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struct BOOST_LEAF_SYMBOL_VISIBLE e_file_name
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{
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constexpr static char const * const value = "<unavailable>";
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BOOST_LEAF_CONSTEXPR explicit e_file_name( char const * ) { }
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};
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#endif
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struct BOOST_LEAF_SYMBOL_VISIBLE e_errno
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{
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int value;
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explicit e_errno(int value=errno): value(value) { }
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template <class CharT, class Traits>
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friend std::basic_ostream<CharT, Traits> & operator<<(std::basic_ostream<CharT, Traits> & os, e_errno const & err)
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{
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return os << type<e_errno>() << ": " << err.value << ", \"" << std::strerror(err.value) << '"';
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}
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};
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struct BOOST_LEAF_SYMBOL_VISIBLE e_type_info_name { char const * value; };
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struct BOOST_LEAF_SYMBOL_VISIBLE e_at_line { int value; };
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namespace windows
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{
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struct e_LastError
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{
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unsigned value;
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explicit e_LastError(unsigned value): value(value) { }
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#if BOOST_LEAF_CFG_WIN32
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e_LastError(): value(GetLastError()) { }
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template <class CharT, class Traits>
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friend std::basic_ostream<CharT, Traits> & operator<<(std::basic_ostream<CharT, Traits> & os, e_LastError const & err)
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{
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struct msg_buf
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{
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LPVOID * p;
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msg_buf(): p(nullptr) { }
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~msg_buf() noexcept { if(p) LocalFree(p); }
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};
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msg_buf mb;
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if( FormatMessageA(
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FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
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nullptr,
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err.value,
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MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),
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(LPSTR)&mb.p,
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0,
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nullptr) )
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{
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BOOST_LEAF_ASSERT(mb.p != nullptr);
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char * z = std::strchr((LPSTR)mb.p,0);
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if( z[-1] == '\n' )
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*--z = 0;
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if( z[-1] == '\r' )
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*--z = 0;
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return os << type<e_LastError>() << ": " << err.value << ", \"" << (LPCSTR)mb.p << '"';
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}
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return os;
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}
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#endif
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};
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}
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} }
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#endif
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