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84 lines
2.6 KiB
84 lines
2.6 KiB
// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com) |
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// (C) Copyright 2005-2007 Jonathan Turkanis |
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// (C) Copyright Jonathan Graehl 2004. |
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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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// Used by mapped_file.cpp. |
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#ifndef BOOST_IOSTREAMS_DETAIL_SYSTEM_FAILURE_HPP_INCLUDED |
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#define BOOST_IOSTREAMS_DETAIL_SYSTEM_FAILURE_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 <cstring> |
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#include <string> |
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#include <boost/config.hpp> |
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#include <boost/throw_exception.hpp> |
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#include <boost/iostreams/detail/config/windows_posix.hpp> |
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#include <boost/iostreams/detail/ios.hpp> // failure. |
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#if defined(BOOST_NO_STDC_NAMESPACE) && !defined(__LIBCOMO__) |
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namespace std { using ::strlen; } |
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#endif |
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#ifdef BOOST_IOSTREAMS_WINDOWS |
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# define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers |
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# include <windows.h> |
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#else |
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# include <errno.h> |
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# include <string.h> |
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#endif |
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namespace boost { namespace iostreams { namespace detail { |
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inline BOOST_IOSTREAMS_FAILURE system_failure(const char* msg) |
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{ |
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std::string result; |
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#ifdef BOOST_IOSTREAMS_WINDOWS |
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DWORD err; |
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LPVOID lpMsgBuf; |
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if ( (err = ::GetLastError()) != NO_ERROR && |
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::FormatMessageA( FORMAT_MESSAGE_ALLOCATE_BUFFER | |
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FORMAT_MESSAGE_FROM_SYSTEM, |
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NULL, |
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err, |
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
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(LPSTR) &lpMsgBuf, |
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0, |
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NULL ) != 0 ) |
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{ |
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result.reserve(std::strlen(msg) + 2 + std::strlen((LPSTR)lpMsgBuf)); |
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result.append(msg); |
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result.append(": "); |
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result.append((LPSTR) lpMsgBuf); |
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::LocalFree(lpMsgBuf); |
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} else { |
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result += msg; |
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} |
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#else |
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const char* system_msg = errno ? strerror(errno) : ""; |
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result.reserve(std::strlen(msg) + 2 + std::strlen(system_msg)); |
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result.append(msg); |
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result.append(": "); |
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result.append(system_msg); |
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#endif |
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return BOOST_IOSTREAMS_FAILURE(result); |
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} |
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inline BOOST_IOSTREAMS_FAILURE system_failure(const std::string& msg) |
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{ return system_failure(msg.c_str()); } |
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inline void throw_system_failure(const char* msg) |
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{ boost::throw_exception(system_failure(msg)); } |
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inline void throw_system_failure(const std::string& msg) |
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{ boost::throw_exception(system_failure(msg)); } |
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} } } // End namespaces detail, iostreams, boost. |
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#endif // #ifndef BOOST_IOSTREAMS_DETAIL_SYSTEM_FAILURE_HPP_INCLUDED
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