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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
// **************************************************************************
#ifndef SYSTEMFUNCTIONS_H_INCLUDED
#define SYSTEMFUNCTIONS_H_INCLUDED
#include <string>
#include "utf.h"
#include "i18n.h"
#ifdef FFS_WIN
#include "win.h" //includes "windows.h"
#elif defined FFS_LINUX
#include <cstring>
#include <cerrno>
#endif
namespace zen
{
//evaluate GetLastError()/errno and assemble specific error message
#ifdef FFS_WIN
typedef DWORD ErrorCode;
#elif defined FFS_LINUX
typedef int ErrorCode;
#endif
std::wstring getLastErrorFormatted(ErrorCode lastError = 0);
ErrorCode getLastError();
bool errorCodeForNotExisting(ErrorCode lastError); //check for "not existing" aliases
//######################## implementation ########################
inline
ErrorCode getLastError()
{
#ifdef FFS_WIN
return ::GetLastError();
#elif defined FFS_LINUX
return errno;
#endif
}
inline
std::wstring getLastErrorFormatted(ErrorCode lastError)
{
#ifdef FFS_WIN
//determine error code if none was specified
if (lastError == 0)
lastError = ::GetLastError();
std::wstring output = _("Windows Error Code %x:");
replace(output, L"%x", numberTo<std::wstring>(lastError));
LPWSTR buffer = nullptr;
if (::FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_MAX_WIDTH_MASK |
FORMAT_MESSAGE_IGNORE_INSERTS | //important: without this flag ::FormatMessage() will fail if message contains placeholders
FORMAT_MESSAGE_ALLOCATE_BUFFER, nullptr, lastError, 0, reinterpret_cast<LPWSTR>(&buffer), 0, nullptr) != 0)
{
if (buffer) //just to be sure
{
output += L" ";
output += buffer;
::LocalFree(buffer);
}
}
::SetLastError(lastError); //restore last error
return output;
#elif defined FFS_LINUX
//determine error code if none was specified
if (lastError == 0)
lastError = errno; //don't use "::", errno is a macro!
std::wstring output = _("Linux Error Code %x:");
replace(output, L"%x", numberTo<std::wstring>(lastError));
output += L" ";
output += utfCvrtTo<std::wstring>(::strerror(lastError));
errno = lastError; //restore errno
return output;
#endif
}
inline
bool errorCodeForNotExisting(ErrorCode lastError)
{
#ifdef FFS_WIN
return lastError == ERROR_FILE_NOT_FOUND ||
lastError == ERROR_PATH_NOT_FOUND ||
lastError == ERROR_BAD_NETPATH ||
lastError == ERROR_NETNAME_DELETED;
#elif defined FFS_LINUX
return lastError == ENOENT;
#endif
}
}
#endif // SYSTEMFUNCTIONS_H_INCLUDED
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