path.nim

proc simplifyPath(path: string): string =
  ## /User/Tom/../Carl/../../ -> /
  result = path
  var 
    bounds = newSeq[int]()
    writePos, readPos = 0
  while readPos < path.len():
    result[writePos] = path[readPos]
    if path[readPos] == '/':
      if path[readPos+1 .. readPos+3] == "../":
        echo("Bounds len: ", bounds.len())
        echo("Bounds: ", repr(bounds))
        writePos = bounds[bounds.len()-1]
        readPos.inc(3)
      else:
        bounds.add(readPos)
        echo("Bound added: ", readPos)
    writePos.inc
    readPos.inc