source: LinkExchange/trunk/scripts/lxrefresh @ 87

#!/usr/bin/env python

# This script is part of LinkExchange library.
# LinkExchange - Universal link exchange service client
# Copyright (C) 2009 Konstantin Korikov
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# NOTE: In the context of the Python environment, I interpret "dynamic
# linking" as importing -- thus the LGPL applies to the contents of
# the modules, but make no requirements on code importing these
# modules.

import sys
import os.path
import optparse
import logging

import linkexchange as lx

op = optparse.OptionParser(
        usage = "%prog -c linkexchange.cfg [other options] [name=value...]",
        description = (
            "Refresh links database using configuration from linkexchange.cfg. "
            "Interpolation variables can be specified in arguments using "
            "name=value format."))

op.add_option('-c', '--config',
        dest='config',
        default=None,
        help="specify path to LinkExchange configuration file",
        metavar="FILE")
op.add_option('-r', '--request-url',
        dest='request_url',
        default=None,
        help="request URL or domain",
        metavar="URL")
op.add_option('-q', '--quiet',
        dest='quiet',
        action='store_true',
        default=False,
        help="suppress all normal output")
op.add_option('--debug',
        dest='debug',
        action='store_true',
        default=False,
        help="print debug output")

(opts, args) = op.parse_args()
op.print_usage = lambda file = None: None

if not opts.config:
    op.error("you must specify configuration file with -c "
            "or --config option!")

interpolation = dict(
        basedir = os.path.abspath(os.path.dirname(opts.config)))
for arg in args:
    try:
        k, v = arg.split('=', 1)
    except ValueError:
        op.error("%s is not seems like name=value")
    interpolation[k] = v

log = logging.getLogger()
log_hdl = logging.StreamHandler(sys.stderr)
log.addHandler(log_hdl)
if opts.debug:
    log.setLevel(logging.DEBUG)
elif opts.quiet:
    log.setLevel(logging.CRITICAL)
else:
    log.setLevel(logging.WARNING)

platform = None
options = None
try:
    lx.file_config(globals(), opts.config,
            defaults = interpolation)
except lx.ConfigError, e:
    op.error(str(e))

request_url = opts.request_url
if request_url is None:
    request_url = options.get('host', None)
if not request_url:
    op.error("host undefined! you need to set the host option in "
            "the linkexchange.cfg or pass -r option at the comment line.")
if '://' not in request_url:
    request_url = 'http://' + request_url

platform.refresh_db(request_url)