def exists(path):
    """Test whether a path exists.

    Returns false for broken symbolic links.

    """
    path = _tostr(path, "exists")
    return File(sys.getPath(path)).exists()

def getatime(path):
    # We can't detect access time so we return modification time. This
    # matches the behaviour in os.stat().
    path = _tostr(path, "getatime")
    f = File(sys.getPath(path))
    if not f.exists():
        raise OSError(0, "No such file or directory", path)
    return f.lastModified() / 1000.0

def getsize(path):
    path = _tostr(path, "getsize")
    f = File(sys.getPath(path))
    size = f.length()
    # Sadly, if the returned length is zero, we don't really know if the file
    # is zero sized or does not exist.
    if size == 0 and not f.exists():
        raise OSError(0, "No such file or directory", path)
    return size

def mkdir(path, mode='ignored'):
    """mkdir(path [, mode=0777])

    Create a directory.

    The optional parameter is currently ignored.
    """
    if not File(sys.getPath(path)).mkdir():
        raise OSError(0, "couldn't make directory", path)

    def abspath(path):
        """Return the absolute version of a path."""
        try:
            if isinstance(path, unicode):
                if path:
                    path = sys.getPath(path)
                else:
                    # Empty path must return current working directory
                    path = os.getcwdu()
            else:
                if path:
                    path = sys.getPath(path).encode('latin-1')
                else:
                    # Empty path must return current working directory
                    path = os.getcwd()
        except EnvironmentError:
             pass # Bad path - return unchanged.

        return normpath(path)

def getmtime(path):
    path = _tostr(path, "getmtime")
    f = File(sys.getPath(path))
    if not f.exists():
        raise OSError(0, "No such file or directory", path)
    return f.lastModified() / 1000.0

def _realpath(path):
    try:
        return asPyString(File(sys.getPath(path)).getCanonicalPath())
    except java.io.IOException:
        return _abspath(path)

def _abspath(path):
    # Must use normpath separately because getAbsolutePath doesn't normalize
    # and getCanonicalPath would eliminate symlinks.
    return normpath(asPyString(File(sys.getPath(path)).getAbsolutePath()))

def isdir(path):
    """Test whether a path is a directory"""
    path = _tostr(path, "isdir")
    return File(sys.getPath(path)).isDirectory()

def isfile(path):
    """Test whether a path is a regular file"""
    path = _tostr(path, "isfile")
    return File(sys.getPath(path)).isFile()

def rmdir(path):
    """rmdir(path)

    Remove a directory."""
    if not File(sys.getPath(path)).delete():
        raise OSError(0, "couldn't delete directory", path)