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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. """provides information about Ubuntu's and Debian's distributions""" import csv import datetime import os def convert_date(string): """Convert a date string in ISO 8601 into a datetime object.""" if not string: date = None else: parts = [int(x) for x in string.split("-")] if len(parts) == 3: (year, month, day) = parts date = datetime.date(year, month, day) elif len(parts) == 2: (year, month) = parts if month == 12: date = datetime.date(year, month, 31) else: date = datetime.date(year, month + 1, 1) - datetime.timedelta(1) else: raise ValueError("Date not in ISO 8601 format.") return date def _get_data_dir(): """Get the data directory based on the module location.""" return "/usr/share/distro-info" class DistroDataOutdated(Exception): """Distribution data outdated.""" def __init__(self): super(DistroDataOutdated, self).__init__( "Distribution data outdated. " "Please check for an update for distro-info-data. See " "/usr/share/doc/distro-info-data/README.Debian for details.") class DistroRelease(object): """Represents a distributions release""" # pylint: disable=too-few-public-methods # pylint: disable=too-many-instance-attributes def __init__(self, version, codename, series, created=None, release=None, eol=None, eol_server=None, eol_esm=None): # pylint: disable=too-many-arguments self.version = version self.codename = codename self.series = series self.created = created self.release = release self.eol = eol self.eol_server = eol_server self.eol_esm = eol_esm def is_supported(self, date): """Check whether this release is supported on the given date.""" return date >= self.created and (self.eol is None or date <= self.eol or ( self.eol_server is not None and date <= self.eol_server)) def _get_date(row, column): return convert_date(row[column]) if column in row else None class DistroInfo(object): """Base class for distribution information. Use DebianDistroInfo or UbuntuDistroInfo instead of using this directly. """ def __init__(self, distro): self._distro = distro filename = os.path.join(_get_data_dir(), distro.lower() + ".csv") csvfile = open(filename) csv_reader = csv.DictReader(csvfile) self._releases = [] for row in csv_reader: release = DistroRelease(row['version'], row['codename'], row['series'], _get_date(row, 'created'), _get_date(row, 'release'), _get_date(row, 'eol'), _get_date(row, 'eol-server'), _get_date(row, 'eol-esm')) self._releases.append(release) csvfile.close() self._date = datetime.date.today() @property def all(self): """List codenames of all known distributions.""" return [x.series for x in self._releases] def get_all(self, result="codename"): """List all known distributions.""" return [self._format(result, x) for x in self._releases] def _avail(self, date): """Return all distributions that were available on the given date.""" return [x for x in self._releases if date >= x.created] def codename(self, release, date=None, default=None): """Map codename aliases to the codename they describe.""" # pylint: disable=no-self-use,unused-argument return release def version(self, name, default=None): """Map codename or series to version""" for release in self._releases: if name in (release.codename, release.series): return release.version return default def devel(self, date=None, result="codename"): """Get latest development distribution based on the given date.""" if date is None: date = self._date distros = [x for x in self._avail(date) if x.release is None or (date < x.release and (x.eol is None or date <= x.eol))] if not distros: raise DistroDataOutdated() return self._format(result, distros[-1]) def _format(self, format_string, release): """Format a given distribution entry.""" if format_string == "object": return release if format_string == "codename": return release.series if format_string == "fullname": return self._distro + " " + release.version + ' "' + release.codename + '"' if format_string == "release": return release.version raise ValueError("Only codename, fullname, object, and release are allowed " "result values, but not '" + format_string + "'.") def stable(self, date=None, result="codename"): """Get latest stable distribution based on the given date.""" if date is None: date = self._date distros = [x for x in self._avail(date) if x.release is not None and date >= x.release and (x.eol is None or date <= x.eol)] if not distros: raise DistroDataOutdated() return self._format(result, distros[-1]) def supported(self, date=None, result=None): """Get list of all supported distributions based on the given date.""" raise NotImplementedError() def valid(self, codename): """Check if the given codename is known.""" return codename in self.all def unsupported(self, date=None, result="codename"): """Get list of all unsupported distributions based on the given date.""" if date is None: date = self._date supported = self.supported(date) distros = [self._format(result, x) for x in self._avail(date) if x.series not in supported] return distros class DebianDistroInfo(DistroInfo): """provides information about Debian's distributions""" def __init__(self): super(DebianDistroInfo, self).__init__("Debian") def codename(self, release, date=None, default=None): """Map 'unstable', 'testing', etc. to their codenames.""" if release == "unstable": codename = self.devel(date) elif release == "testing": codename = self.testing(date) elif release == "stable": codename = self.stable(date) elif release == "oldstable": codename = self.old(date) else: codename = default return codename def devel(self, date=None, result="codename"): """Get latest development distribution based on the given date.""" if date is None: date = self._date distros = [x for x in self._avail(date) if x.release is None or (date < x.release and (x.eol is None or date <= x.eol))] if len(distros) < 2: raise DistroDataOutdated() return self._format(result, distros[-2]) def old(self, date=None, result="codename"): """Get old (stable) Debian distribution based on the given date.""" if date is None: date = self._date distros = [x for x in self._avail(date) if x.release is not None and date >= x.release] if len(distros) < 2: raise DistroDataOutdated() return self._format(result, distros[-2]) def supported(self, date=None, result="codename"): """Get list of all supported Debian distributions based on the given date.""" if date is None: date = self._date distros = [self._format(result, x) for x in self._avail(date) if x.eol is None or date <= x.eol] return distros def testing(self, date=None, result="codename"): """Get latest testing Debian distribution based on the given date.""" if date is None: date = self._date distros = [x for x in self._avail(date) if (x.release is None and x.version) or (x.release is not None and date < x.release and (x.eol is None or date <= x.eol))] if not distros: raise DistroDataOutdated() return self._format(result, distros[-1]) def valid(self, codename): """Check if the given codename is known.""" return (DistroInfo.valid(self, codename) or codename in ["unstable", "testing", "stable", "oldstable"]) class UbuntuDistroInfo(DistroInfo): """provides information about Ubuntu's distributions""" def __init__(self): super(UbuntuDistroInfo, self).__init__("Ubuntu") def lts(self, date=None, result="codename"): """Get latest long term support (LTS) Ubuntu distribution based on the given date.""" if date is None: date = self._date distros = [x for x in self._releases if x.version.find("LTS") >= 0 and x.release <= date <= x.eol] if not distros: raise DistroDataOutdated() return self._format(result, distros[-1]) def is_lts(self, codename): """Is codename an LTS release?""" distros = [x for x in self._releases if x.series == codename] if not distros: return False return "LTS" in distros[0].version def supported(self, date=None, result="codename"): """Get list of all supported Ubuntu distributions based on the given date.""" if date is None: date = self._date distros = [self._format(result, x) for x in self._avail(date) if date <= x.eol or (x.eol_server is not None and date <= x.eol_server)] return distros def supported_esm(self, date=None, result="codename"): """Get list of all ESM supported Ubuntu distributions based on the given date.""" if date is None: date = self._date distros = [self._format(result, x) for x in self._avail(date) if x.eol_esm is not None and date <= x.eol_esm] return distros