#!/usr/bin/env zsh
#
# Copyright (C) 2010 Nick Bowler
#
# Simple script which ensures that a running fetchmail daemon is
# sleeping, by forcing a fetch run and waiting until it finishes.
# This is useful for log rotation: the fetchmail daemon will not
# write to the log file while it is sleeping.  It is also useful
# for manually invoking fetch runs.
#
# License WTFPL2: Do What The Fuck You Want To Public License, version 2.
# This is free software: you are free to do what the fuck you want to.
# There is NO WARRANTY, to the extent permitted by law.

setopt nonotify

pid=`head -n 1 ~/.fetchmail.pid 2>/dev/null`

if ! [[ $pid > 0 && $(ps --no-heading $pid) =~ fetchmail ]]; then
	echo "$0: fetchmail is not running."
	exit 1
fi

coproc sed --unbuffered '/^fetchmail: sleeping/q'
tail -s 0.1 -n 0 -f ~/.fetchmaillog --pid $! >&p &
kill -USR1 $pid
<&p
wait