import io

import ldif


def parse_ldif(ldif_input):
    """
    Helper function that parses the passed-in LDIF string. This is a
    simple wrapper around the Python LDAP ldif.LDIFRecordList class.

    Entries are returned as list of (dn, attributes)
    tuples. Attributes are represented by a dictionary mapping
    attribute names to list of associated values.

    :param ldif_input: LDIF to parse.
    :type ldif_input: str

    :returns: List of parsed entries.
    :rtype: list[tuple(str, dict{str: list[str]})]

    Returns:
    """

    parser = ldif.LDIFRecordList(io.StringIO(ldif_input))

    try:
        parser.parse()
    except Exception as e:
        raise ValueError("Failed to parse input: %s" % str(e))

    return parser.all_records