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// Copyright (c) 2020-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <config/bitcoin-config.h> // IWYU pragma: keep
#include <tinyformat.h>
#include <util/syserror.h>
#include <cstring>
#include <string>
#if defined(WIN32)
#include <windows.h>
#include <locale>
#include <codecvt>
#endif
std::string SysErrorString(int err)
{
char buf[1024];
/* Too bad there are three incompatible implementations of the
* thread-safe strerror. */
const char *s = nullptr;
#ifdef WIN32
if (strerror_s(buf, sizeof(buf), err) == 0) s = buf;
#else
#ifdef STRERROR_R_CHAR_P /* GNU variant can return a pointer outside the passed buffer */
s = strerror_r(err, buf, sizeof(buf));
#else /* POSIX variant always returns message in buffer */
if (strerror_r(err, buf, sizeof(buf)) == 0) s = buf;
#endif
#endif
if (s != nullptr) {
return strprintf("%s (%d)", s, err);
} else {
return strprintf("Unknown error (%d)", err);
}
}
#if defined(WIN32)
std::string Win32ErrorString(int err)
{
wchar_t buf[256];
buf[0] = 0;
if(FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_MAX_WIDTH_MASK,
nullptr, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
buf, ARRAYSIZE(buf), nullptr))
{
return strprintf("%s (%d)", std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>,wchar_t>().to_bytes(buf), err);
}
else
{
return strprintf("Unknown error (%d)", err);
}
}
#endif
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