#! /usr/bin/env python3
#
# Reconstruct config from update file, including command line
#
# $Id$
#

from __future__ import print_function

import argparse
import io
import sys

from expconfig import ConfigObj

import update
from feedback import die
import package_info

#
# Main routine
#

# Check command line

command_line = argparse.ArgumentParser(description=
    'Reconstruct config from update file, including command line.')
command_line.add_argument('update', nargs='?', default='update', 
                          help='update script file name [%(default)s]')
command_line.add_argument('-V', '--version', action='version',
                          version=package_info.version)
command_line.add_argument('-i', '--indent-string', default='  ',
                          help='set indent string [%(default)s]')

args = command_line.parse_args()

try:
    update_data = update.Update(args.update)
except IOError as error:
    die("'{0}': {1}".format(error.filename, error.strerror))

config_data = ConfigObj(update_data.get_config_file(), write_empty_values=True,
                        indent_type=args.indent_string)
for d in update_data.get_config_dicts():
    config_data.merge(d)

# Ready to roll out

lines = io.BytesIO()
config_data.write(lines)

lines.seek(0)
for line in io.TextIOWrapper(lines):
    print(line, end='')