private UPath(UPathComponents path)
{
if (path.IsAbsolute)
{
_absolute = path;
}
else
{
_relative = path;
}
}
public UPath(string path)
{
if (IsPathRooted(path))
{
_absolute = new UPathComponents(path, true);
}
else
{
_relative = new UPathComponents(path, false);
}
if (_absolute == null)
{
var resolved = FSystem.ResolvePath(path);
if (resolved != null)
{
_absolute = new UPathComponents(resolved, true);
}
}
}
private UPath MakeRelativeUPath(UPathComponents referal, UPathComponents referee)
{
if (referal.Drive != referee.Drive)
{
throw new InvalidOperationException("Making relative path between path on two differents drives " +
referal + " <> " + referee);
}
var fileComponents = new Queue<string>(referee.Components.Take(referee.Components.Length - 1));
var components = new Queue<string>(referal.Components);
var newComponents = new List<string>();
var differencefound = false;
if (CheckDoubleDots(components, fileComponents))
{
throw new InvalidOperationException("Cannot infer the name of a directory for relative path from " +
referal + " to " + referee);
}
while (components.Count > 0 && fileComponents.Count > 0)
{
var fileComponent = fileComponents.Peek();
var component = components.Peek();
if (component != fileComponent || differencefound)
{
differencefound = true;
newComponents.Add("..");
components.Dequeue();
}
else
{
fileComponents.Dequeue();
components.Dequeue();
}
}
while (components.Count > 0)
{
newComponents.Add("..");
components.Dequeue();
}
while (fileComponents.Count > 0)
{
newComponents.Add(fileComponents.Dequeue());
}
newComponents.Add(referee.Components.Last());
return new UPath(new UPathComponents(referal.Drive, newComponents.ToArray(), false));
}