#!/usr/bin/python3

import sys

from signal import signal, SIGPIPE, SIG_DFL
from vyos.configtree import ConfigTree

signal(SIGPIPE,SIG_DFL)

config_string = None
if (len(sys.argv) == 1):
    # If no argument given, act as a pipe
    config_string = sys.stdin.read()
else:
    file_name = sys.argv[1]
    try:
        with open(file_name, 'r') as f:
            config_string = f.read()
    except OSError as e:
        print("Could not read config file {0}: {1}".format(file_name, e), file=sys.stderr)

try:
    config = ConfigTree(config_string)
    commands = config.to_commands()
except ValueError as e:
    print("Could not parse the config file: {0}".format(e), file=sys.stderr)
    sys.exit(1)

print(commands)