forked from dolphin-emu/dolphin
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
// Copyright 2009 Dolphin Emulator Project
|
|
// Licensed under GPLv2+
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <cstddef>
|
|
#include <cstring>
|
|
#include <errno.h>
|
|
#include <type_traits>
|
|
|
|
#include "Common/CommonFuncs.h"
|
|
|
|
#ifdef _WIN32
|
|
#include <windows.h>
|
|
#define strerror_r(err, buf, len) strerror_s(buf, len, err)
|
|
#endif
|
|
|
|
constexpr size_t BUFFER_SIZE = 256;
|
|
|
|
// Wrapper function to get last strerror(errno) string.
|
|
// This function might change the error code.
|
|
std::string LastStrerrorString()
|
|
{
|
|
char error_message[BUFFER_SIZE];
|
|
|
|
// There are two variants of strerror_r. The XSI version stores the message to the passed-in
|
|
// buffer and returns an int (0 on success). The GNU version returns a pointer to the message,
|
|
// which might have been stored in the passed-in buffer or might be a static string.
|
|
|
|
// We check defines in order to figure out variant is in use, and we store the returned value
|
|
// to a variable so that we'll get a compile-time check that our assumption was correct.
|
|
|
|
#if defined(__GLIBC__) && (_GNU_SOURCE || (_POSIX_C_SOURCE < 200112L && _XOPEN_SOURCE < 600))
|
|
const char* str = strerror_r(errno, error_message, BUFFER_SIZE);
|
|
return std::string(str);
|
|
#else
|
|
int error_code = strerror_r(errno, error_message, BUFFER_SIZE);
|
|
return error_code == 0 ? std::string(error_message) : "";
|
|
#endif
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
// Wrapper function to get GetLastError() string.
|
|
// This function might change the error code.
|
|
std::string GetLastErrorString()
|
|
{
|
|
char error_message[BUFFER_SIZE];
|
|
|
|
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(),
|
|
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), error_message, BUFFER_SIZE, nullptr);
|
|
return std::string(error_message);
|
|
}
|
|
#endif
|