import select
import sys
import trigger
import logger

log = logger.logger(__name__).get()

class stdin_trigger(trigger.trigger):
    def get_triggered_page_list(self):
        count = 0
        while True:
            r, w, x = select.select([sys.stdin], [], [], 0)
            if len(r) == 0: break

            count += 1
            if count > 10: break

            for fh in r:
                if fh == sys.stdin:
                    message = sys.stdin.readline().rstrip()
                    if message == "": break

                    log.info("***** stdin trigger saw: \"%s\" *****" % message)
        return None