forked from dolphin-emu/dolphin
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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// The code in GetErrorMessage can't handle some systems having the
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// GNU version of strerror_r and other systems having the XSI version,
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// so we undefine _GNU_SOURCE here in an attempt to always get the XSI version.
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// We include cstring before all other headers in case cstring is included
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// indirectly (without undefining _GNU_SOURCE) by some other header.
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#ifdef _GNU_SOURCE
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#undef _GNU_SOURCE
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#include <cstring>
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#define _GNU_SOURCE
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#else
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#include <cstring>
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#endif
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#include <cstddef>
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#include <errno.h>
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#include "Common/CommonFuncs.h"
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#ifdef _WIN32
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#include <windows.h>
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#define strerror_r(err, buf, len) strerror_s(buf, len, err)
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#endif
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constexpr size_t BUFFER_SIZE = 256;
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// Wrapper function to get last strerror(errno) string.
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// This function might change the error code.
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std::string LastStrerrorString()
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{
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char error_message[BUFFER_SIZE];
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// We assume that the XSI-compliant version of strerror_r (returns int) is used
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// rather than the GNU version (returns char*). The returned value is stored to
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// an int variable to get a compile-time check that the return type is not char*.
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const int result = strerror_r(errno, error_message, BUFFER_SIZE);
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if (result != 0)
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return "";
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return std::string(error_message);
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}
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#ifdef _WIN32
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// Wrapper function to get GetLastError() string.
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// This function might change the error code.
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std::string GetLastErrorString()
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{
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char error_message[BUFFER_SIZE];
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FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(),
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), error_message, BUFFER_SIZE, nullptr);
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return std::string(error_message);
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}
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#endif
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