#!/usr/bin/python2 -tt
# vim:set fileencoding=utf-8

from subprocess import *
import sys
import os, select

special = {
# define new unicode nethack/tradewars glyphs here
}

if len(sys.argv) < 2:
    print "usage: ibmfilter [command]"
    print "Runs command in a subshell and translates its output from ibm473 codepage to UTF-8."
    sys.exit(0)

handle = Popen(sys.argv[1:], stdout=PIPE, bufsize=1)
buf = handle.stdout.read(1)
while buf != '':
    if buf in special:
        out = special[buf]
    else:
        out = buf.decode('ibm437')
    writeable = select.select([], [sys.stdout], [], 5)[1]
    if not writeable:
        os.kill(handle.pid)
        os.system('reset')
        raise Exception("Timed out while waiting for stdout to be writeable...")
    sys.stdout.write(out.encode("UTF-8"))

    buf = handle.stdout.read(1)

handle.wait()