#!/usr/bin/env python
# Write data from stdin to an IRC channel.

import irclib, os, sys, select, time, getopt

def die(s):
	print s
	sys.exit(1)

def usage(rc):
	print "Usage: ircsend [-h] [-p PORT] SERVER NICK CHANNEL"
	sys.exit(rc)

def main(args):
	try:
		opts, args = getopt.getopt(args, "p:h")
	except getopt.GetoptError:
		usage()
		sys.exit(1)

	port = 6667
	try:
		for (o, a) in opts:
			if o == "-h":
				usage(0)
			elif o == "-p":
				port = int(a)
	except ValueError:
		usage(1)

	if len(args) != 3:
		usage(1)

	read_fds = [sys.stdin]
	timeout = 0
	def add_callback(fd):
		read_fds.append(fd)
	def remove_callback(fd):
		read_fds.remove(fd)
	def timeout_callback(t):
		timeout = time.time() + t

	irc = irclib.IRC(add_callback, remove_callback, timeout_callback)
	server = irc.server()
	server.connect(args[0], 6667, args[1])
	server.join(args[2])

	while True:
		if timeout == 0:
			t = None
		else:
			t = timeout - time.time()
		(rfds, wfds, efds) = select.select(read_fds, [], [], t)
		irc.process_data(rfds)
		if sys.stdin in rfds:
			l = sys.stdin.readline()
			if l == "":
				break
			server.privmsg(args[2], l.strip())
		if rfds == []:
			irc.process_timeout()
			timeout = 0

	server.quit()

if __name__ == "__main__":
	main(sys.argv[1:])