getconfigfile.py

Ubuntu packages of security software。 相当不错的源码

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Copyright (C) 2007 Adriano Monteiro Marques.
#
# Author: Adriano Monteiro Marques <[e-mail]>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

from os.path import exists, dirname
from os import access, R_OK
from tempfile import mktemp

from zenmapCore.Paths import Path
from zenmapCore.UmitLogging import log

def get_config_file(filename, original_content = None):
    try:
        c = Path.__getattr__(filename)
        if exists(c) and access(c, R_OK):
            config_file = c
        else:
            raise Exception("Configuration file %s does not exist or is not readable." % c)
    except:
        if original_content is not None:
            # Using temporary file
            config_file = mktemp()
            cfile = open(config_file, "w")
            cfile.write(original_content)
            cfile.close()
        else:
            raise

    log.debug(">>> Get config file %s: %s" % (filename, config_file))
    return config_file