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Win: Add ntstatus_error

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2025-01-24 15:04:35 +01:00
parent a0aa5f177d
commit 6874413b65
1 changed files with 59 additions and 0 deletions
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59
include/WinStd/Win.h
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@ -1994,6 +1994,65 @@ namespace winstd
};
/// @}
/// \addtogroup WinStdExceptions
/// @{
///
/// NTSTATUS error
///
class ntstatus_error : public num_runtime_error<LONG>
{
public:
///
/// Constructs an exception
///
/// \param[in] num NTSTATUS error code
///
ntstatus_error(_In_ error_type num) : num_runtime_error<LONG>(num, message(num))
{}
///
/// Constructs an exception
///
/// \param[in] num NTSTATUS error code
/// \param[in] msg Error message
///
ntstatus_error(_In_ error_type num, _In_ const std::string& msg) : num_runtime_error<LONG>(num, msg + ": " + message(num))
{}
///
/// Constructs an exception
///
/// \param[in] num NTSTATUS error code
/// \param[in] msg Error message
///
ntstatus_error(_In_ error_type num, _In_z_ const char *msg) : num_runtime_error<LONG>(num, std::string(msg) + ": " + message(num))
{}
protected:
///
/// Returns a user-readable NTSTATUS error message.
/// As std::exception messages may only be char*, we use UTF-8 by convention.
///
/// \sa [FormatMessage function](https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-formatmessage)
///
static std::string message(_In_ error_type num, _In_opt_ DWORD dwLanguageId = 0)
{
std::wstring wstr;
winstd::library ntdll(LoadLibraryW(L"NTDLL.DLL"));
if (ntdll && FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_IGNORE_INSERTS, (HMODULE)ntdll, num, dwLanguageId, wstr, NULL)) {
// Stock Windows error messages contain CRLF. Well... Trim all the trailing white space.
wstr.erase(wstr.find_last_not_of(L" \t\n\r\f\v") + 1);
} else
sprintf(wstr, num >= 0x10000 ? L"Error 0x%X" : L"Error %u", num);
std::string str;
WideCharToMultiByte(CP_UTF8, 0, wstr, str, NULL, NULL);
return str;
}
};
/// @}
}
/// \addtogroup WinStdWinAPI