from trac.wiki.macros import WikiMacroBase
class GoogleCalendarMacro(WikiMacroBase):
    """GoogleCalendar Output.
    """

    revision = "$Rev$"
    url = "$URL$"

    def expand_macro(self, formatter, name, args):
        if unicode(args).find('src="http://www.google.com/calendar/') >= 0 :
            return unicode(args)
        else:
            return unicode("")