362 lines
12 KiB
Python
362 lines
12 KiB
Python
# Copyright (C) 2009-2012, Benjamin Drung <bdrung@debian.org>
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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"""provides information about Ubuntu's and Debian's distributions"""
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import csv
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import datetime
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import os
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def convert_date(string):
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"""Convert a date string in ISO 8601 into a datetime object."""
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if not string:
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date = None
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else:
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parts = [int(x) for x in string.split("-")]
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if len(parts) == 3:
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(year, month, day) = parts
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date = datetime.date(year, month, day)
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elif len(parts) == 2:
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(year, month) = parts
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if month == 12:
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date = datetime.date(year, month, 31)
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else:
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date = datetime.date(year, month + 1, 1) - datetime.timedelta(1)
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else:
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raise ValueError("Date not in ISO 8601 format.")
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return date
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def _get_data_dir():
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"""Get the data directory based on the module location."""
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return "/usr/share/distro-info"
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class DistroDataOutdated(Exception):
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"""Distribution data outdated."""
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def __init__(self):
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super().__init__(
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"Distribution data outdated. Please check for an update for distro-info-data. "
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"See /usr/share/doc/distro-info-data/README.Debian for details."
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)
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class DistroRelease:
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"""Represents a distributions release"""
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# pylint: disable=too-few-public-methods
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# pylint: disable=too-many-instance-attributes
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def __init__(
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self,
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version,
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codename,
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series,
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created=None,
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release=None,
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eol=None,
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eol_esm=None,
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eol_lts=None,
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eol_elts=None,
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eol_server=None,
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):
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# pylint: disable=too-many-arguments
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self.version = version
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self.codename = codename
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self.series = series
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self.created = created
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self.release = release
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self.eol = eol
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self.eol_lts = eol_lts
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self.eol_elts = eol_elts
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self.eol_esm = eol_esm
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self.eol_server = eol_server
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def is_supported(self, date):
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"""Check whether this release is supported on the given date."""
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return date >= self.created and (
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self.eol is None
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or date <= self.eol
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or (self.eol_server is not None and date <= self.eol_server)
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)
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def _get_date(row, column):
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return convert_date(row[column]) if column in row else None
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class DistroInfo:
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"""Base class for distribution information.
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Use DebianDistroInfo or UbuntuDistroInfo instead of using this directly.
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"""
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def __init__(self, distro):
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self._distro = distro
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filename = os.path.join(_get_data_dir(), distro.lower() + ".csv")
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with open(filename, encoding="utf-8") as csvfile:
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csv_reader = csv.DictReader(csvfile)
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self._releases = []
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for row in csv_reader:
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release = DistroRelease(
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row["version"],
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row["codename"],
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row["series"],
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_get_date(row, "created"),
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_get_date(row, "release"),
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_get_date(row, "eol"),
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_get_date(row, "eol-esm"),
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_get_date(row, "eol-lts"),
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_get_date(row, "eol-elts"),
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_get_date(row, "eol-server"),
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)
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self._releases.append(release)
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self._date = datetime.date.today()
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@property
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def all(self):
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"""List codenames of all known distributions."""
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return [x.series for x in self._releases]
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def get_all(self, result="codename"):
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"""List all known distributions."""
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return [self._format(result, x) for x in self._releases]
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def _avail(self, date):
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"""Return all distributions that were available on the given date."""
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return [x for x in self._releases if date >= x.created]
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def codename(self, release, date=None, default=None):
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"""Map codename aliases to the codename they describe."""
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# pylint: disable=no-self-use,unused-argument
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return release
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def version(self, name, default=None):
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"""Map codename or series to version"""
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for release in self._releases:
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if name in (release.codename, release.series):
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return release.version
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return default
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def devel(self, date=None, result="codename"):
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"""Get latest development distribution based on the given date."""
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if date is None:
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date = self._date
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distros = [
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x
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for x in self._avail(date)
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if x.release is None or (date < x.release and (x.eol is None or date <= x.eol))
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]
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if not distros:
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raise DistroDataOutdated()
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return self._format(result, distros[-1])
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def _format(self, format_string, release):
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"""Format a given distribution entry."""
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if format_string == "object":
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return release
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if format_string == "codename":
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return release.series
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if format_string == "fullname":
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return self._distro + " " + release.version + ' "' + release.codename + '"'
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if format_string == "release":
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return release.version
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raise ValueError(
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"Only codename, fullname, object, and release are allowed "
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"result values, but not '" + format_string + "'."
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)
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def stable(self, date=None, result="codename"):
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"""Get latest stable distribution based on the given date."""
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if date is None:
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date = self._date
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distros = [
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x
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for x in self._avail(date)
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if x.release is not None and date >= x.release and (x.eol is None or date <= x.eol)
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]
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if not distros:
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raise DistroDataOutdated()
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return self._format(result, distros[-1])
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def supported(self, date=None, result=None):
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"""Get list of all supported distributions based on the given date."""
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raise NotImplementedError()
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def valid(self, codename):
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"""Check if the given codename is known."""
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return codename in self.all
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def unsupported(self, date=None, result="codename"):
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"""Get list of all unsupported distributions based on the given date."""
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if date is None:
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date = self._date
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supported = self.supported(date)
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distros = [self._format(result, x) for x in self._avail(date) if x.series not in supported]
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return distros
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class DebianDistroInfo(DistroInfo):
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"""provides information about Debian's distributions"""
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def __init__(self):
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super().__init__("Debian")
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def codename(self, release, date=None, default=None):
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"""Map 'unstable', 'testing', etc. to their codenames."""
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if release == "unstable":
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codename = self.devel(date)
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elif release == "testing":
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codename = self.testing(date)
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elif release == "stable":
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codename = self.stable(date)
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elif release == "oldstable":
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codename = self.old(date)
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else:
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codename = default
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return codename
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def devel(self, date=None, result="codename"):
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"""Get latest development distribution based on the given date."""
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if date is None:
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date = self._date
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distros = [
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x
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for x in self._avail(date)
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if x.release is None or (date < x.release and (x.eol is None or date <= x.eol))
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]
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if len(distros) < 2:
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raise DistroDataOutdated()
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return self._format(result, distros[-2])
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def old(self, date=None, result="codename"):
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"""Get old (stable) Debian distribution based on the given date."""
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if date is None:
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date = self._date
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distros = [x for x in self._avail(date) if x.release is not None and date >= x.release]
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if len(distros) < 2:
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raise DistroDataOutdated()
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return self._format(result, distros[-2])
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def supported(self, date=None, result="codename"):
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"""Get list of all supported Debian distributions based on the given
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date."""
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if date is None:
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date = self._date
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distros = [
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self._format(result, x) for x in self._avail(date) if x.eol is None or date <= x.eol
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]
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return distros
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def lts_supported(self, date=None, result="codename"):
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"""Get list of all LTS supported Debian distributions based on the given
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date."""
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if date is None:
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date = self._date
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distros = [
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self._format(result, x)
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for x in self._avail(date)
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if (x.eol is not None and date > x.eol)
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and (x.eol_lts is not None and date <= x.eol_lts)
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]
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return distros
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def elts_supported(self, date=None, result="codename"):
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"""Get list of all Extended LTS supported Debian distributions based on
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the given date."""
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if date is None:
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date = self._date
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distros = [
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self._format(result, x)
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for x in self._avail(date)
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if (x.eol_lts is not None and date > x.eol_lts)
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and (x.eol_elts is not None and date <= x.eol_elts)
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]
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return distros
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def testing(self, date=None, result="codename"):
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"""Get latest testing Debian distribution based on the given date."""
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if date is None:
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date = self._date
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distros = [
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x
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for x in self._avail(date)
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if (x.release is None and x.version)
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or (x.release is not None and date < x.release and (x.eol is None or date <= x.eol))
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]
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if not distros:
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raise DistroDataOutdated()
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return self._format(result, distros[-1])
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def valid(self, codename):
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"""Check if the given codename is known."""
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return DistroInfo.valid(self, codename) or codename in [
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"unstable",
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"testing",
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"stable",
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"oldstable",
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]
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class UbuntuDistroInfo(DistroInfo):
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"""provides information about Ubuntu's distributions"""
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def __init__(self):
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super().__init__("Ubuntu")
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def lts(self, date=None, result="codename"):
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"""Get latest long term support (LTS) Ubuntu distribution based on the
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given date."""
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if date is None:
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date = self._date
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distros = [
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x for x in self._releases if x.version.find("LTS") >= 0 and x.release <= date <= x.eol
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]
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if not distros:
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raise DistroDataOutdated()
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return self._format(result, distros[-1])
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def is_lts(self, codename):
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"""Is codename an LTS release?"""
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distros = [x for x in self._releases if x.series == codename]
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if not distros:
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return False
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return "LTS" in distros[0].version
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def supported(self, date=None, result="codename"):
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"""Get list of all supported Ubuntu distributions based on the given
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date."""
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if date is None:
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date = self._date
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distros = [
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self._format(result, x)
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for x in self._avail(date)
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if date <= x.eol or (x.eol_server is not None and date <= x.eol_server)
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]
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return distros
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def supported_esm(self, date=None, result="codename"):
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"""Get list of all ESM supported Ubuntu distributions based on the
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given date."""
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if date is None:
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date = self._date
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distros = [
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self._format(result, x)
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for x in self._avail(date)
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if x.eol_esm is not None and date <= x.eol_esm
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]
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return distros
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