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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: 2013 Dolphin Emulator Project
// SPDX-FileCopyrightText: 2014 Citra Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <cstddef>
#ifdef _WIN32
#include <windows.h>
#else
#include <cerrno>
#include <cstring>
#endif
#include "common/error.h"
namespace Common {
// glibc, mlibc, musl, and newlib all define their own variants of strerror_r
// We don't need to use the preprocessor, we can just select depending on return type
template<typename T> std::string HandleStrerrorR(T r, char *err_str);
template<> std::string HandleStrerrorR(char* r, char *) { return std::string{r}; }
template<> std::string HandleStrerrorR(const char* r, char *) { return std::string{r}; }
template<> std::string HandleStrerrorR(int r, char *err_str) {
return std::string{r != 0
? "(strerror_r failed to format error)"
: err_str};
}
std::string NativeErrorToString(int e) {
#ifdef _WIN32
LPSTR err_str;
DWORD res = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, e, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
LPSTR(&err_str), 1, nullptr);
if (res) {
std::string ret(err_str);
LocalFree(err_str);
return ret;
}
return "(FormatMessageA failed to format error)";
#else
char err_str[255];
return HandleStrerrorR(strerror_r(e, err_str, sizeof(err_str)), err_str);
#endif // _WIN32
}
std::string GetLastErrorMsg() {
#ifdef _WIN32
return NativeErrorToString(GetLastError());
#else
return NativeErrorToString(errno);
#endif
}
} // namespace Common
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