Any replacement for Path.GetFullPath in WinRT? - windows-runtime

Question

In the .NET API for Windows Store Apps the Path class does not have the GetFullPath method. I need to normalize a path though, which was easy using GetFullPath. Does anyone know another method or external code that normalizes a path? What I mean with that is for example:
add the application's path if the path does not start with a drive
handle ..\ and .\ correctly
GetFullPath is pretty complex and mimicking the functionality is not easy.

Answer 1

As far as i understand, in WinRT you rather work with the package's installed location or with "known" folders:
Windows.ApplicationModel.Package.Current.InstalledLocation.GetFileAsync(fileName)
KnownFolders.DocumentsLibrary.GetFileAsync(fileName)

Answer 2

I did not find any replacement for GetFullPath, but developed a method that handles parent directory tokens (..\) like GetFullPath.
Here it is:
public static string NormalizePath(string path)
{
if (String.IsNullOrEmpty(path) == false)
{
// Correct multiple backslashes
path = Regex.Replace(path, #"\\+", #"\");
// Correct parent directory tokens with too many points in it
path = Regex.Replace(path, #"\\\.\.+", #"\..");
// Split the path into tokens
List<string> resultingPathTokens = new List<string>();
var pathTokens = path.Split('\\');
// Iterate through the tokens to process parent directory tokens
foreach (var pathToken in pathTokens)
{
if (pathToken == "..")
{
if (resultingPathTokens.Count > 1)
{
resultingPathTokens.RemoveAt(resultingPathTokens.Count - 1);
}
}
else
{
resultingPathTokens.Add(pathToken);
}
}
// Get the resulting path
string resultingPath = String.Join("\\", resultingPathTokens);
// Check if the path contains only two chars with a colon as the second
if (resultingPath.Length == 2 && resultingPath[1] == ':')
{
// Add a backslash in this case
resultingPath += "\\";
}
return resultingPath;
}
return path;
}