#! /usr/bin/env python3
from __future__ import print_function

import sys


def usage(code=0):
    sys.stderr.write("Usage: %s [-0|--null] [-n|--no-newline] [-s|--space] [-w|--width] [width]\n" % sys.argv[0])
    sys.exit(code)


def get_args():
    from getopt import getopt, GetoptError

    try:
        options, arguments = getopt(
            sys.argv[1:], "0nsw:",
            ["null", "no-newline", "space", "width="])
    except GetoptError:
        usage(1)

    print0 = False
    newline = True
    space = ''
    width = None

    for option, value in options:
        if option in ("-h", "--help"):
            usage()
        elif option in ("-0", "--null"):
            print0 = True
        elif option in ("-n", "--no-newline"):
            newline = False
        elif option in ("-s", "--space"):
            space = u' '
        elif option in ("-w", "--width"):
            width = int(value)
        else:
            usage(2)

    if arguments:
        if width is not None:
            usage(3)
        elif len(arguments) > 1:
            usage(4)
        else:
            width = int(arguments[0])

    return print0, newline, space, width

print0, newline, space, width = get_args()


text = sys.stdin.read()
if not newline:
    text = text.rstrip()

if width:
    import textwrap
    text = textwrap.fill(
        text, width - 2*len(space),
        initial_indent=space, subsequent_indent=space)
    if space:
        text = u'\n'.join([line+space for line in text.split(u'\n')])
else:
    text = u"%s%s%s" % (space, text, space)

sys.stdout.write(text)

if print0:
    sys.stdout.write('\0')
elif newline:
    print()