def check_styling_filename(lines, filename):
    (ifndef_symbol, _) = get_ifndef_symbol(lines)
    file = os.path.splitext(os.path.basename(filename))[0].upper()
    if (not ((file in ifndef_symbol) or (file in ifndef_symbol.replace('_', '')))):
        return ((('Malformed include guard: ' + ifndef_symbol) + ' || ') + file)
def check_styling_filename(lines, filename):
    (ifndef_symbol, _) = get_ifndef_symbol(lines)
    file = os.path.splitext(os.path.basename(filename))[0].upper()
    if (not ((file in ifndef_symbol) or (file in ifndef_symbol.replace('_', )))):
        return ((('Malformed include guard: ' + ifndef_symbol) + ' || ') + file)