/*! \relates XsFile
\brief Retrieves the full path for a filename
\param[in] filename The filename to expand
\param[out] fullPath The filename with a fully expanded path is returned in this parameter. This parameter must be allocated by the caller.
\returns XRV_OK if the fullpath could be retrieved, XRV_NULLPTR if fullPath is NULL, XRV_ERROR otherwise
*/
XsResultValue XsFile_fullPath(const struct XsString* filename, struct XsString* fullPath)
{
XsResultValue result = XRV_OK;
if (fullPath == NULL)
{
result = XRV_NULLPTR;
}
else
{
#ifdef _WIN32
wchar_t filenamew[XS_MAX_FILENAME_LENGTH];
wchar_t fullpath[XS_MAX_FILENAME_LENGTH];
(void)XsString_copyToWCharArray(filename, filenamew, XS_MAX_FILENAME_LENGTH);
if (_wfullpath(fullpath, filenamew, XS_MAX_FILENAME_LENGTH) == NULL)
result = XRV_ERROR;
else
XsString_assignWCharArray(fullPath, fullpath);
#else
// based on the assumption that this doesn't concern the serial port, handle
// it the same way using realpath(). Apparently realpath() doesn't require a
// maximum length. One would possibly want to write a wrapper for it.
char fullpath[XS_MAX_FILENAME_LENGTH*2];
if (realpath(filename->m_data, fullpath) == NULL)
result = XRV_ERROR;
else
XsString_assignCharArray(fullPath, fullpath);
#endif
}
return result;
}
/*! \brief Get an error string after a failure occurred
\param[in,out] error the string to fill with the result error
*/
void XsLibraryLoader_getErrorString(XsString* error)
{
#ifdef __GNUC__
XsString_assignCharArray(error, dlerror());
#elif defined(_MSC_VER)
LPTSTR errorText = NULL;
(void)FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM
|FORMAT_MESSAGE_ALLOCATE_BUFFER
|FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&errorText,
0,
NULL);
XsString_assignWCharArray(error, errorText);
LocalFree(errorText);
#endif
}
