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# Copyright (C) 2009 Canonical
#
# Authors:
# Michael Vogt
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from __future__ import print_function
import datetime
import os
try:
from typing import Optional, Tuple
Optional # pyflakes
Tuple # pyflakes
except ImportError:
pass
import apt
import apt_pkg
apt # pyflakes
datetime # pyflakes
os # pyflakes
def get_maintenance_end_date(release_date, m_months):
# type: (datetime.datetime, int) -> Tuple[int, int]
"""
get the (year, month) tuple when the maintenance for the distribution
ends. Needs the data of the release and the number of months that
its is supported as input
"""
# calc end date
years = m_months // 12
months = m_months % 12
support_end_year = (release_date.year + years +
(release_date.month + months) // 12)
support_end_month = (release_date.month + months) % 12
# special case: this happens when e.g. doing 2010-06 + 18 months
if support_end_month == 0:
support_end_month = 12
support_end_year -= 1
return (support_end_year, support_end_month)
def get_release_date_from_release_file(path):
# type: (str) -> Optional[int]
"""
return the release date as time_t for the given release file
"""
if not path or not os.path.exists(path):
return None
with os.fdopen(apt_pkg.open_maybe_clear_signed_file(path)) as data:
tag = apt_pkg.TagFile(data)
section = next(tag)
if "Date" not in section:
return None
date = section["Date"]
return apt_pkg.str_to_time(date)
def get_release_filename_for_pkg(cache, pkgname, label, release):
# type: (apt.Cache, str, str, str) -> Optional[str]
" get the release file that provides this pkg "
if pkgname not in cache:
return None
pkg = cache[pkgname]
ver = None
# look for the version that comes from the repos with
# the given label and origin
for aver in pkg._pkg.version_list:
if aver is None or aver.file_list is None:
continue
for ver_file, _index in aver.file_list:
# print verFile
if (ver_file.origin == label and
ver_file.label == label and
ver_file.archive == release):
ver = aver
if not ver:
return None
indexfile = cache._list.find_index(ver.file_list[0][0])
for metaindex in cache._list.list:
for m in metaindex.index_files:
if (indexfile and
indexfile.describe == m.describe and
indexfile.is_trusted):
dirname = apt_pkg.config.find_dir("Dir::State::lists")
for relfile in ['InRelease', 'Release']:
name = (apt_pkg.uri_to_filename(metaindex.uri) +
"dists_%s_%s" % (metaindex.dist, relfile))
if os.path.exists(dirname + name):
return dirname + name
return None