def from_text(text, origin = root):
    """Convert text into a Name object.
    @rtype: dns.name.Name object
    """

    if not isinstance(text, str):
        if isinstance(text, unicode) and sys.hexversion >= 0x02030000:
            return from_unicode(text, origin)
        else:
            raise ValueError("input to from_text() must be a string")
    if not (origin is None or isinstance(origin, Name)):
        raise ValueError("origin must be a Name or None")
    labels = []
    label = ''
    escaping = False
    edigits = 0
    total = 0
    if text == '@':
        text = ''
    if text:
        if text == '.':
            return Name([''])
        for c in text:
            if escaping:
                if edigits == 0:
                    if c.isdigit():
                        total = int(c)
                        edigits += 1
                    else:
                        label += c
                        escaping = False
                else:
                    if not c.isdigit():
                        raise BadEscape
                    total *= 10
                    total += int(c)
                    edigits += 1
                    if edigits == 3:
                        escaping = False
                        label += chr(total)
            elif c == '.':
                if len(label) == 0:
                    raise EmptyLabel
                labels.append(label)
                label = ''
            elif c == '\\':
                escaping = True
                edigits = 0
                total = 0
            else:
                label += c
        if escaping:
            raise BadEscape
        if len(label) > 0:
            labels.append(label)
        else:
            labels.append('')
    if (len(labels) == 0 or labels[-1] != '') and not origin is None:
        labels.extend(list(origin.labels))
    return Name(labels)
Convert text into a Name object.
    @rtype: dns.name.Name object