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#!/usr/bin/env python |
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# -*- coding: utf8 -*- |
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# |
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# configuration.py : configuration related class and fonctions for |
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# versions.py modules. |
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# |
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# (C) Copyright 2016 - 2018 Olivier Delhomme |
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# e-mail : [email protected] |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 3, or (at your option) |
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# any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software Foundation, |
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# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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# |
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import codecs |
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import argparse |
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import os |
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import errno |
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import yaml |
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__author__ = "Olivier Delhomme <[email protected]>" |
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__date__ = "06.11.2018" |
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__version__ = "1.5.2" |
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def make_directories(path): |
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""" |
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Makes all directories in path if possible. It is not an error if |
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path already exists. |
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""" |
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try: |
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os.makedirs(path) |
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except OSError as exc: |
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if exc.errno != errno.EEXIST or os.path.isdir(path) is not True: |
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raise |
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# End of make_directories() function |
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class Conf: |
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""" |
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Class to store configuration of the program and check version. |
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""" |
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config_dir = '' |
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local_dir = '' |
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config_filename = '' |
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description = {} |
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options = None |
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def __init__(self): |
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""" |
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Inits the class |
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""" |
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self.config_dir = os.path.expanduser("~/.config/versions") |
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self.local_dir = os.path.expanduser("~/.local/versions") |
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self.config_filename = '' # At this stage we do not know if a filename has been set on the command line |
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self.description = {} |
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self.options = None |
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# Make sure that the directories exists |
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make_directories(self.config_dir) |
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make_directories(self.local_dir) |
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self._get_command_line_arguments() |
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# End of init() function |
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def load_yaml_from_config_file(self, filename): |
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""" |
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Loads definitions from the YAML config file filename |
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>>> conf = Conf() |
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>>> conf.load_yaml_from_config_file('./bad_formatted.yaml') |
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Error in configuration file ./bad_formatted.yaml at position: 9:1 |
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""" |
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config_file = codecs.open(filename, 'r', encoding='utf-8') |
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try: |
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self.description = yaml.safe_load(config_file) |
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except yaml.YAMLError as err: |
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if hasattr(err, 'problem_mark'): |
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mark = err.problem_mark |
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print(u'Error in configuration file {} at position: {}:{}'.format(filename, mark.line+1, mark.column+1)) |
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else: |
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print(u'Error in configuration file {}'.format(filename)) |
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config_file.close() |
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# End of load_yaml_from_config_file() function |
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def _get_command_line_arguments(self): |
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""" |
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Defines and gets all the arguments for the command line using |
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argparse module. This function is called in the __init__ function |
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of this class. |
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""" |
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str_version = 'versions.py - %s' % __version__ |
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parser = argparse.ArgumentParser(description='This program checks releases and versions of programs through RSS or Atom feeds') |
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parser.add_argument('-v', '--version', action='version', version=str_version) |
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parser.add_argument('-f', '--file', action='store', dest='filename', help='Configuration file with projects to check', default='') |
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parser.add_argument('-l', '--list-cache', action='store_true', dest='list_cache', help='Lists all projects and their version in cache', default=False) |
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parser.add_argument('-d', '--debug', action='store_true', dest='debug', help='Starts in debug mode and prints things that may help', default=False) |
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self.options = parser.parse_args() |
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if self.options.filename != '': |
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self.config_filename = self.options.filename |
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else: |
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self.config_filename = os.path.join(self.config_dir, 'versions.yaml') |
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# End of get_command_line_arguments() function |
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def extract_site_definition(self, site_name): |
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""" |
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extracts whole site definition |
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""" |
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if site_name in self.description: |
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return self.description[site_name] |
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else: |
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return dict() |
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# End of extract_site_definition() |
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def extract_regex_from_site(self, site_name): |
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""" |
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Extracts a regex from a site as defined in the YAML file. |
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Returns the regex if it exists or None otherwise. |
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""" |
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return self.extract_variable_from_site(site_name, 'regex', None) |
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# End of extract_regex_from_site() function |
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def extract_multiproject_from_site(self, site_name): |
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""" |
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Extracts from a site its separator list for its multiple |
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projects in one title. It returns None if multiproject |
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is not defined and the list of separators instead |
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""" |
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return self.extract_variable_from_site(site_name, 'multiproject', None) |
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# End of extract…multiproject_from_site() function |
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def extract_variable_from_site(self, site_name, variable, default_return): |
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""" |
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Extracts variable from site site_name if it exists and return |
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default_return otherwise |
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""" |
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site_definition = self.extract_site_definition(site_name) |
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if variable in site_definition: |
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value = site_definition[variable] |
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if value is None: |
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print(u'Warning: no variable "{}" for site "{}".'.format(variable, site_name)) |
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value = default_return |
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else: |
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value = default_return |
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return value |
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# End of extract_variable_from_site() function |
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def extract_project_list_from_site(self, site_name): |
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""" |
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Extracts a project list from a site as defined in the YAML file. |
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""" |
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return self.extract_variable_from_site(site_name, 'projects', []) |
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# End of extract_project_list_from_site() function |
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def extract_project_url(self, site_name): |
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""" |
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Extracts the url definition where to check project version. |
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""" |
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return self.extract_variable_from_site(site_name, 'url', '') |
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# End of extract_project_url() function |
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def extract_project_entry(self, site_name): |
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""" |
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Extracts the entry definition (if any) of a site. |
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""" |
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return self.extract_variable_from_site(site_name, 'entry', '') |
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# End of extract_project_entry() function. |
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def is_site_of_type(self, site_name, site_type): |
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""" |
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Returns True if site_name is of type 'site_type' |
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""" |
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site_definition = self.extract_site_definition(site_name) |
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if 'type' in site_definition: |
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return (site_definition['type'] == site_type) |
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else: |
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return False |
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# End of is_site_of_type() function |
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def extract_site_list(self, site_type): |
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""" |
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Extracts all sites from a specific type (byproject or list) |
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""" |
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all_site_list = list(self.description.keys()) |
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site_list = [] |
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for site_name in all_site_list: |
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if self.is_site_of_type(site_name, site_type): |
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site_list.insert(0, site_name) |
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return site_list |
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# End of extract_site_list() function |
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def make_site_cache_list_name(self): |
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""" |
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Formats list of cache filenames for all sites. |
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""" |
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all_site_list = list(self.description.keys()) |
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cache_list = [] |
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for site_name in all_site_list: |
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site_cache = u'{}.cache'.format(site_name) |
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cache_list.insert(0, site_cache) |
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return cache_list |
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# End of make_site_cache_list_name() function |
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def get_infos_for_site(self, site_name): |
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""" |
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Returns informations about a site as a tuple |
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(list of projects, url to check, filename of the cache) |
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""" |
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project_list = self.extract_project_list_from_site(site_name) |
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project_url = self.extract_project_url(site_name) |
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project_entry = self.extract_project_entry(site_name) |
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cache_filename = u'{}.cache'.format(site_name) |
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return (project_list, project_url, cache_filename, project_entry) |
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# End of get_infos_for_site() function |
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# End of Conf class |
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dupgit /
versions
