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#!/usr/bin/env python2.5
"""context-rlwrap -- a simple readline wrapper
Usage: context-rlwrap [some other program and args]
Wraps the plain stdin-based input mechanism of the given program into a
convenient readline-based one.
"""
import os
import sys
import signal
import readline
if len(sys.argv) < 2:
sys.exit(__doc__)
rfd, wfd = os.pipe()
pid = os.fork()
if pid == 0:
os.close(wfd)
os.dup2(rfd, 0)
sys.argv.pop(0)
os.execvp(sys.argv[0], sys.argv)
else:
def childied(n, f):
p, ec = os.waitpid(pid, 0)
sys.exit(ec)
signal.signal(signal.SIGCHLD, childied)
os.close(rfd)
try:
while True:
l = raw_input()
os.write(wfd, l + '\n')
except (KeyboardInterrupt, SystemExit): raise
except: pass
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