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- #
- # SPDX-License-Identifier: GPL-2.0-only
- #
- def get_os_release():
- """Get all key-value pairs from /etc/os-release as a dict"""
- from collections import OrderedDict
- data = OrderedDict()
- if os.path.exists('/etc/os-release'):
- with open('/etc/os-release') as f:
- for line in f:
- try:
- key, val = line.rstrip().split('=', 1)
- except ValueError:
- continue
- data[key.strip()] = val.strip('"')
- return data
- def release_dict_osr():
- """ Populate a dict with pertinent values from /etc/os-release """
- data = {}
- os_release = get_os_release()
- if 'ID' in os_release:
- data['DISTRIB_ID'] = os_release['ID']
- if 'VERSION_ID' in os_release:
- data['DISTRIB_RELEASE'] = os_release['VERSION_ID']
- return data
- def release_dict_lsb():
- """ Return the output of lsb_release -ir as a dictionary """
- from subprocess import PIPE
- try:
- output, err = bb.process.run(['lsb_release', '-ir'], stderr=PIPE)
- except bb.process.CmdError as exc:
- return {}
- lsb_map = { 'Distributor ID': 'DISTRIB_ID',
- 'Release': 'DISTRIB_RELEASE'}
- lsb_keys = lsb_map.keys()
- data = {}
- for line in output.splitlines():
- if line.startswith("-e"):
- line = line[3:]
- try:
- key, value = line.split(":\t", 1)
- except ValueError:
- continue
- if key in lsb_keys:
- data[lsb_map[key]] = value
- if len(data.keys()) != 2:
- return None
- return data
- def release_dict_file():
- """ Try to gather release information manually when other methods fail """
- data = {}
- try:
- if os.path.exists('/etc/lsb-release'):
- data = {}
- with open('/etc/lsb-release') as f:
- for line in f:
- key, value = line.split("=", 1)
- data[key] = value.strip()
- elif os.path.exists('/etc/redhat-release'):
- data = {}
- with open('/etc/redhat-release') as f:
- distro = f.readline().strip()
- import re
- match = re.match(r'(.*) release (.*) \((.*)\)', distro)
- if match:
- data['DISTRIB_ID'] = match.group(1)
- data['DISTRIB_RELEASE'] = match.group(2)
- elif os.path.exists('/etc/SuSE-release'):
- data = {}
- data['DISTRIB_ID'] = 'SUSE LINUX'
- with open('/etc/SuSE-release') as f:
- for line in f:
- if line.startswith('VERSION = '):
- data['DISTRIB_RELEASE'] = line[10:].rstrip()
- break
- except IOError:
- return {}
- return data
- def distro_identifier(adjust_hook=None):
- """Return a distro identifier string based upon lsb_release -ri,
- with optional adjustment via a hook"""
- import re
- # Try /etc/os-release first, then the output of `lsb_release -ir` and
- # finally fall back on parsing various release files in order to determine
- # host distro name and version.
- distro_data = release_dict_osr()
- if not distro_data:
- distro_data = release_dict_lsb()
- if not distro_data:
- distro_data = release_dict_file()
- distro_id = distro_data.get('DISTRIB_ID', '')
- release = distro_data.get('DISTRIB_RELEASE', '')
- if adjust_hook:
- distro_id, release = adjust_hook(distro_id, release)
- if not distro_id:
- return "Unknown"
- # Filter out any non-alphanumerics
- distro_id = re.sub(r'\W', '', distro_id)
- if release:
- id_str = '{0}-{1}'.format(distro_id.lower(), release)
- else:
- id_str = distro_id
- return id_str.replace(' ','-').replace('/','-')
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