#!/usr/bin/python
"""
Dead simple script to query the NeuroDebian dev config (or any other Python config file)
"""

import os, sys

from ConfigParser import SafeConfigParser
from optparse import OptionParser

__prog__ = os.path.basename(sys.argv[0])
__version__ = '0.0.2'

if __name__ == '__main__':
    parser = OptionParser(
        usage="%s [OPTIONS] [section] [field]\n" % __prog__ + __doc__,
        version="%prog " + __version__)

    parser.add_option(
        '-f', '--config-file', default="/etc/neurodebian/neurodebian.cfg",
        help="name of the config file")

    parser.add_option(
        '-F', '--value-separator', default="=",
        help="string to separate key from value")

    opts, argv = parser.parse_args()

    if not os.path.exists(opts.config_file):
        sys.stderr.write("ERROR: File %s does not exist\n" % opts.config_file)
        sys.exit(1)

    cfg = SafeConfigParser()
    cfg.read(opts.config_file)
    if len(argv) == 2:
        print cfg.get(argv[0], argv[1])
    elif len(argv) == 1:
        # Print values of the section, =-separate key from value
        print '\n'.join([opts.value_separator.join(x)
                         for x in cfg.items(argv[0])])
    else:
        # Print section names
        print '\n'.join(cfg.sections())