def transliterate_ala_lc(value):
if not value:<EOL><INDENT>return value<EOL><DEDENT>text = unidecode(value)<EOL>return text<EOL>
Transliterate a string.

    Compatibility with the ALA-LC romanization standard:
    http://www.loc.gov/catdir/cpso/roman.html

    Maps from one system of writing into another, letter by letter.
    Uses 'unidecode' if available.

    :param values: string to transform
    :type values: string

    :return: string transliterated
    :rtype: string