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# Copyright (C) 2011 Aleksey Lim
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
"""Get LSB (Linux Standard Base) Distribution information."""
import re
import math
import subprocess
from os.path import exists
_distributor_id = None
_release = None
_DERIVATES = {
'Trisquel': (
'Ubuntu', [
lambda x: '%02d.%02d' %
(int(float(x)) + 6, 4
if float(x) - int(float(x)) < 0.5 else 10),
],
),
'LinuxMint': (
'Ubuntu', [
lambda x: '%02d.%02d' %
(math.ceil(int(x) / 2.) + 5, [4, 10][(int(x) - 1) % 2]),
],
),
'Tuquito': (
'Ubuntu', [
lambda x: '%02d.%02d' %
(int(float(x)) + 6, 4 if float(x) == int(float(x)) else 10)
],
),
}
def distributor_id():
"""Current distribution LSB `Distributor ID`.
:returns:
string value
"""
if _distributor_id is None:
_init()
return _distributor_id
def release():
"""Current distribution LSB `Release`.
:returns:
string value
"""
if _release is None:
_init()
return _release
def _init():
global _distributor_id, _release
def check_derivates():
global _distributor_id, _release
if _distributor_id not in _DERIVATES:
return
_distributor_id, releases = _DERIVATES[_distributor_id]
for i in releases:
release_value = i(_release)
if release_value:
break
else:
release_value = ''
_release = release_value
try:
_distributor_id, _release = _lsb_release()
check_derivates()
except OSError:
if exists('/etc/lsb-release'):
_distributor_id, _release = _parse_lsb_release()
check_derivates()
if not _release:
_distributor_id, _release = _find_lsb_release()
return _distributor_id, _release
def _lsb_release():
lsb_id, lsb_release = '', ''
process = subprocess.Popen(['lsb_release', '--all'],
stderr=subprocess.PIPE, stdout=subprocess.PIPE)
stdout, __ = process.communicate()
if process.returncode == 0:
for line in str(stdout).split('\n'):
if ':' not in line:
continue
key, value = line.split(':', 1)
if key.strip() == 'Distributor ID':
lsb_id = value.strip()
elif key.strip() == 'Release':
lsb_release = value.strip()
return lsb_id, lsb_release
def _parse_lsb_release():
lsb_id, lsb_release = '', ''
for line in file('/etc/lsb-release').readlines():
key, value = line.split('=')
value = value.strip().strip('\'"')
if key == 'DISTRIB_ID':
lsb_id = value
elif key == 'DISTRIB_RELEASE':
lsb_release = value
return lsb_id, lsb_release
def _find_lsb_release():
if exists('/etc/debian_version'):
return 'Debian', file('/etc/debian_version').read().strip()
elif exists('/etc/redhat-release'):
line = file('/etc/redhat-release').read().strip()
match = re.search('Fedora.*?\\W([0-9.]+)', line)
if match is not None:
return 'Fedora', match.group(1)
match = re.search('CentOS.*?\\W([0-9.]+)', line)
if match is not None:
return 'CentOS', match.group(1)
match = re.search('\\W([0-9.]+)', line)
if match is not None:
return 'RHEL', match.group(1)
else:
# TODO http://linuxmafia.com/faq/Admin/release-files.html
return '', ''
if __name__ == '__main__':
print distributor_id(), release()
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