private static string CanonicalizePath(string path)
{
if (path == null)
{
return(path);
}
if (Environment.IsRunningOnWindows)
{
path = path.Trim();
}
if (path.Length == 0)
{
return(path);
}
string pathRoot = Path.GetPathRoot(path);
string[] array = path.Split(new char[]
{
Path.DirectorySeparatorChar,
Path.AltDirectorySeparatorChar
});
int num = 0;
bool flag = Environment.IsRunningOnWindows && pathRoot.Length > 2 && Path.IsDsc(pathRoot[0]) && Path.IsDsc(pathRoot[1]);
int num2 = (!flag) ? 0 : 3;
for (int i = 0; i < array.Length; i++)
{
if (Environment.IsRunningOnWindows)
{
array[i] = array[i].TrimEnd(new char[0]);
}
if (!(array[i] == ".") && (i == 0 || array[i].Length != 0))
{
if (array[i] == "..")
{
if (num > num2)
{
num--;
}
}
else
{
array[num++] = array[i];
}
}
}
if (num == 0 || (num == 1 && array[0] == string.Empty))
{
return(pathRoot);
}
string text = string.Join(Path.DirectorySeparatorStr, array, 0, num);
if (!Environment.IsRunningOnWindows)
{
return(text);
}
if (flag)
{
text = Path.DirectorySeparatorStr + text;
}
if (!Path.SameRoot(pathRoot, text))
{
text = pathRoot + text;
}
if (flag)
{
return(text);
}
if (!Path.IsDsc(path[0]) && Path.SameRoot(pathRoot, path))
{
if (text.Length <= 2 && !text.EndsWith(Path.DirectorySeparatorStr))
{
text += Path.DirectorySeparatorChar;
}
return(text);
}
string currentDirectory = Directory.GetCurrentDirectory();
if (currentDirectory.Length > 1 && currentDirectory[1] == Path.VolumeSeparatorChar)
{
if (text.Length == 0 || Path.IsDsc(text[0]))
{
text += '\\';
}
return(currentDirectory.Substring(0, 2) + text);
}
if (Path.IsDsc(currentDirectory[currentDirectory.Length - 1]) && Path.IsDsc(text[0]))
{
return(currentDirectory + text.Substring(1));
}
return(currentDirectory + text);
}