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//opt/alt/python35/lib/python3.5/site-packages/daemon/_metadata.py

# -*- coding: utf-8 -*-

# daemon/_metadata.py
# Part of ‘python-daemon’, an implementation of PEP 3143.
#
# Copyright © 2008–2016 Ben Finney <ben+python@benfinney.id.au>
#
# This is free software: you may copy, modify, and/or distribute this work
# under the terms of the Apache License, version 2.0 as published by the
# Apache Software Foundation.
# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details.

""" Package metadata for the ‘python-daemon’ distribution. """

from __future__ import (absolute_import, unicode_literals)

import json
import re
import collections
import datetime

import pkg_resources

distribution_name = "python-daemon"
version_info_filename = "version_info.json"

def get_distribution_version_info(filename=version_info_filename):
    """ Get the version info from the installed distribution.

:param filename: Base filename of the version info resource.
        :return: The version info as a mapping of fields. If the
            distribution is not available, the mapping is empty.

The version info is stored as a metadata file in the
        distribution.

"""
    version_info = {
            'release_date': "UNKNOWN",
            'version': "UNKNOWN",
            'maintainer': "UNKNOWN",
            }

try:
        distribution = pkg_resources.get_distribution(distribution_name)
    except pkg_resources.DistributionNotFound:
        distribution = None

if distribution is not None:
        if distribution.has_metadata(version_info_filename):
            content = distribution.get_metadata(version_info_filename)
            version_info = json.loads(content)

return version_info

version_info = get_distribution_version_info()

version_installed = version_info['version']

rfc822_person_regex = re.compile(
        "^(?P<name>[^<]+) <(?P<email>[^>]+)>$")

ParsedPerson = collections.namedtuple('ParsedPerson', ['name', 'email'])

def parse_person_field(value):
    """ Parse a person field into name and email address.

:param value: The text value specifying a person.
        :return: A 2-tuple (name, email) for the person's details.

If the `value` does not match a standard person with email
        address, the `email` item is ``None``.

"""
    result = (None, None)

match = rfc822_person_regex.match(value)
    if len(value):
        if match is not None:
            result = ParsedPerson(
                    name=match.group('name'),
                    email=match.group('email'))
        else:
            result = ParsedPerson(name=value, email=None)

return result

author_name = "Ben Finney"
author_email = "ben+python@benfinney.id.au"
author = "{name} <{email}>".format(name=author_name, email=author_email)

class YearRange:
    """ A range of years spanning a period. """

def __init__(self, begin, end=None):
        self.begin = begin
        self.end = end

def __unicode__(self):
        text = "{range.begin:04d}".format(range=self)
        if self.end is not None:
            if self.end > self.begin:
                text = "{range.begin:04d}–{range.end:04d}".format(range=self)
        return text

__str__ = __unicode__

def make_year_range(begin_year, end_date=None):
    """ Construct the year range given a start and possible end date.

:param begin_date: The beginning year (text) for the range.
        :param end_date: The end date (text, ISO-8601 format) for the
            range, or a non-date token string.
        :return: The range of years as a `YearRange` instance.

If the `end_date` is not a valid ISO-8601 date string, the
        range has ``None`` for the end year.

"""
    begin_year = int(begin_year)

try:
        end_date = datetime.datetime.strptime(end_date, "%Y-%m-%d")
    except (TypeError, ValueError):
        # Specified end_date value is not a valid date.
        end_year = None
    else:
        end_year = end_date.year

year_range = YearRange(begin=begin_year, end=end_year)

return year_range

copyright_year_begin = "2001"
build_date = version_info['release_date']
copyright_year_range = make_year_range(copyright_year_begin, build_date)

copyright = "Copyright © {year_range} {author} and others".format(
        year_range=copyright_year_range, author=author)
license = "Apache-2"
url = "https://alioth.debian.org/projects/python-daemon/"

# Local variables:
# coding: utf-8
# mode: python
# End:
# vim: fileencoding=utf-8 filetype=python :