mirror of
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6ae254aaa0
Tools such as ruff can ignore "imported but unused" warnings if a line ends with "# noqa: F401". It avoids the temptation to remove an import which is used effectively.
1452 lines
46 KiB
Python
1452 lines
46 KiB
Python
""" This module tries to retrieve as much platform-identifying data as
|
||
possible. It makes this information available via function APIs.
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|
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If called from the command line, it prints the platform
|
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information concatenated as single string to stdout. The output
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format is usable as part of a filename.
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"""
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# This module is maintained by Marc-Andre Lemburg <mal@egenix.com>.
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# If you find problems, please submit bug reports/patches via the
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# Python issue tracker (https://github.com/python/cpython/issues) and
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# mention "@malemburg".
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#
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# Still needed:
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# * support for MS-DOS (PythonDX ?)
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# * support for Amiga and other still unsupported platforms running Python
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# * support for additional Linux distributions
|
||
#
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# Many thanks to all those who helped adding platform-specific
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# checks (in no particular order):
|
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#
|
||
# Charles G Waldman, David Arnold, Gordon McMillan, Ben Darnell,
|
||
# Jeff Bauer, Cliff Crawford, Ivan Van Laningham, Josef
|
||
# Betancourt, Randall Hopper, Karl Putland, John Farrell, Greg
|
||
# Andruk, Just van Rossum, Thomas Heller, Mark R. Levinson, Mark
|
||
# Hammond, Bill Tutt, Hans Nowak, Uwe Zessin (OpenVMS support),
|
||
# Colin Kong, Trent Mick, Guido van Rossum, Anthony Baxter, Steve
|
||
# Dower
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||
#
|
||
# History:
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#
|
||
# <see CVS and SVN checkin messages for history>
|
||
#
|
||
# 1.0.8 - changed Windows support to read version from kernel32.dll
|
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# 1.0.7 - added DEV_NULL
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||
# 1.0.6 - added linux_distribution()
|
||
# 1.0.5 - fixed Java support to allow running the module on Jython
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||
# 1.0.4 - added IronPython support
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||
# 1.0.3 - added normalization of Windows system name
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# 1.0.2 - added more Windows support
|
||
# 1.0.1 - reformatted to make doc.py happy
|
||
# 1.0.0 - reformatted a bit and checked into Python CVS
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||
# 0.8.0 - added sys.version parser and various new access
|
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# APIs (python_version(), python_compiler(), etc.)
|
||
# 0.7.2 - fixed architecture() to use sizeof(pointer) where available
|
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# 0.7.1 - added support for Caldera OpenLinux
|
||
# 0.7.0 - some fixes for WinCE; untabified the source file
|
||
# 0.6.2 - support for OpenVMS - requires version 1.5.2-V006 or higher and
|
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# vms_lib.getsyi() configured
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# 0.6.1 - added code to prevent 'uname -p' on platforms which are
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# known not to support it
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# 0.6.0 - fixed win32_ver() to hopefully work on Win95,98,NT and Win2k;
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# did some cleanup of the interfaces - some APIs have changed
|
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# 0.5.5 - fixed another type in the MacOS code... should have
|
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# used more coffee today ;-)
|
||
# 0.5.4 - fixed a few typos in the MacOS code
|
||
# 0.5.3 - added experimental MacOS support; added better popen()
|
||
# workarounds in _syscmd_ver() -- still not 100% elegant
|
||
# though
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# 0.5.2 - fixed uname() to return '' instead of 'unknown' in all
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# return values (the system uname command tends to return
|
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# 'unknown' instead of just leaving the field empty)
|
||
# 0.5.1 - included code for slackware dist; added exception handlers
|
||
# to cover up situations where platforms don't have os.popen
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# (e.g. Mac) or fail on socket.gethostname(); fixed libc
|
||
# detection RE
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# 0.5.0 - changed the API names referring to system commands to *syscmd*;
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# added java_ver(); made syscmd_ver() a private
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||
# API (was system_ver() in previous versions) -- use uname()
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||
# instead; extended the win32_ver() to also return processor
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# type information
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||
# 0.4.0 - added win32_ver() and modified the platform() output for WinXX
|
||
# 0.3.4 - fixed a bug in _follow_symlinks()
|
||
# 0.3.3 - fixed popen() and "file" command invocation bugs
|
||
# 0.3.2 - added architecture() API and support for it in platform()
|
||
# 0.3.1 - fixed syscmd_ver() RE to support Windows NT
|
||
# 0.3.0 - added system alias support
|
||
# 0.2.3 - removed 'wince' again... oh well.
|
||
# 0.2.2 - added 'wince' to syscmd_ver() supported platforms
|
||
# 0.2.1 - added cache logic and changed the platform string format
|
||
# 0.2.0 - changed the API to use functions instead of module globals
|
||
# since some action take too long to be run on module import
|
||
# 0.1.0 - first release
|
||
#
|
||
# You can always get the latest version of this module at:
|
||
#
|
||
# http://www.egenix.com/files/python/platform.py
|
||
#
|
||
# If that URL should fail, try contacting the author.
|
||
|
||
__copyright__ = """
|
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Copyright (c) 1999-2000, Marc-Andre Lemburg; mailto:mal@lemburg.com
|
||
Copyright (c) 2000-2010, eGenix.com Software GmbH; mailto:info@egenix.com
|
||
|
||
Permission to use, copy, modify, and distribute this software and its
|
||
documentation for any purpose and without fee or royalty is hereby granted,
|
||
provided that the above copyright notice appear in all copies and that
|
||
both that copyright notice and this permission notice appear in
|
||
supporting documentation or portions thereof, including modifications,
|
||
that you make.
|
||
|
||
EGENIX.COM SOFTWARE GMBH DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
||
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||
FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,
|
||
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 !
|
||
|
||
"""
|
||
|
||
__version__ = '1.0.8'
|
||
|
||
import collections
|
||
import os
|
||
import re
|
||
import sys
|
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import functools
|
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import itertools
|
||
try:
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import _wmi
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||
except ImportError:
|
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_wmi = None
|
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|
||
### Globals & Constants
|
||
|
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# Helper for comparing two version number strings.
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# Based on the description of the PHP's version_compare():
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# http://php.net/manual/en/function.version-compare.php
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|
||
_ver_stages = {
|
||
# any string not found in this dict, will get 0 assigned
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'dev': 10,
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'alpha': 20, 'a': 20,
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'beta': 30, 'b': 30,
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'c': 40,
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'RC': 50, 'rc': 50,
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# number, will get 100 assigned
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'pl': 200, 'p': 200,
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}
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def _comparable_version(version):
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component_re = re.compile(r'([0-9]+|[._+-])')
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result = []
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for v in component_re.split(version):
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if v not in '._+-':
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try:
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v = int(v, 10)
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t = 100
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except ValueError:
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t = _ver_stages.get(v, 0)
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result.extend((t, v))
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return result
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### Platform specific APIs
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def libc_ver(executable=None, lib='', version='', chunksize=16384):
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""" Tries to determine the libc version that the file executable
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(which defaults to the Python interpreter) is linked against.
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Returns a tuple of strings (lib,version) which default to the
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given parameters in case the lookup fails.
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|
||
Note that the function has intimate knowledge of how different
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libc versions add symbols to the executable and thus is probably
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only usable for executables compiled using gcc.
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The file is read and scanned in chunks of chunksize bytes.
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"""
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if not executable:
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try:
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ver = os.confstr('CS_GNU_LIBC_VERSION')
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# parse 'glibc 2.28' as ('glibc', '2.28')
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parts = ver.split(maxsplit=1)
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if len(parts) == 2:
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return tuple(parts)
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except (AttributeError, ValueError, OSError):
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# os.confstr() or CS_GNU_LIBC_VERSION value not available
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pass
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||
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executable = sys.executable
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||
|
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if not executable:
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# sys.executable is not set.
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return lib, version
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|
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libc_search = re.compile(b'(__libc_init)'
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b'|'
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b'(GLIBC_([0-9.]+))'
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||
b'|'
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br'(libc(_\w+)?\.so(?:\.(\d[0-9.]*))?)', re.ASCII)
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||
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V = _comparable_version
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# We use os.path.realpath()
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||
# here to work around problems with Cygwin not being
|
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# able to open symlinks for reading
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||
executable = os.path.realpath(executable)
|
||
with open(executable, 'rb') as f:
|
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binary = f.read(chunksize)
|
||
pos = 0
|
||
while pos < len(binary):
|
||
if b'libc' in binary or b'GLIBC' in binary:
|
||
m = libc_search.search(binary, pos)
|
||
else:
|
||
m = None
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if not m or m.end() == len(binary):
|
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chunk = f.read(chunksize)
|
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if chunk:
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binary = binary[max(pos, len(binary) - 1000):] + chunk
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||
pos = 0
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||
continue
|
||
if not m:
|
||
break
|
||
libcinit, glibc, glibcversion, so, threads, soversion = [
|
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s.decode('latin1') if s is not None else s
|
||
for s in m.groups()]
|
||
if libcinit and not lib:
|
||
lib = 'libc'
|
||
elif glibc:
|
||
if lib != 'glibc':
|
||
lib = 'glibc'
|
||
version = glibcversion
|
||
elif V(glibcversion) > V(version):
|
||
version = glibcversion
|
||
elif so:
|
||
if lib != 'glibc':
|
||
lib = 'libc'
|
||
if soversion and (not version or V(soversion) > V(version)):
|
||
version = soversion
|
||
if threads and version[-len(threads):] != threads:
|
||
version = version + threads
|
||
pos = m.end()
|
||
return lib, version
|
||
|
||
def _norm_version(version, build=''):
|
||
|
||
""" Normalize the version and build strings and return a single
|
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version string using the format major.minor.build (or patchlevel).
|
||
"""
|
||
l = version.split('.')
|
||
if build:
|
||
l.append(build)
|
||
try:
|
||
strings = list(map(str, map(int, l)))
|
||
except ValueError:
|
||
strings = l
|
||
version = '.'.join(strings[:3])
|
||
return version
|
||
|
||
|
||
# Examples of VER command output:
|
||
#
|
||
# Windows 2000: Microsoft Windows 2000 [Version 5.00.2195]
|
||
# Windows XP: Microsoft Windows XP [Version 5.1.2600]
|
||
# Windows Vista: Microsoft Windows [Version 6.0.6002]
|
||
#
|
||
# Note that the "Version" string gets localized on different
|
||
# Windows versions.
|
||
|
||
def _syscmd_ver(system='', release='', version='',
|
||
|
||
supported_platforms=('win32', 'win16', 'dos')):
|
||
|
||
""" Tries to figure out the OS version used and returns
|
||
a tuple (system, release, version).
|
||
|
||
It uses the "ver" shell command for this which is known
|
||
to exists on Windows, DOS. XXX Others too ?
|
||
|
||
In case this fails, the given parameters are used as
|
||
defaults.
|
||
|
||
"""
|
||
if sys.platform not in supported_platforms:
|
||
return system, release, version
|
||
|
||
# Try some common cmd strings
|
||
import subprocess
|
||
for cmd in ('ver', 'command /c ver', 'cmd /c ver'):
|
||
try:
|
||
info = subprocess.check_output(cmd,
|
||
stdin=subprocess.DEVNULL,
|
||
stderr=subprocess.DEVNULL,
|
||
text=True,
|
||
encoding="locale",
|
||
shell=True)
|
||
except (OSError, subprocess.CalledProcessError) as why:
|
||
#print('Command %s failed: %s' % (cmd, why))
|
||
continue
|
||
else:
|
||
break
|
||
else:
|
||
return system, release, version
|
||
|
||
ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) '
|
||
r'.*'
|
||
r'\[.* ([\d.]+)\])')
|
||
|
||
# Parse the output
|
||
info = info.strip()
|
||
m = ver_output.match(info)
|
||
if m is not None:
|
||
system, release, version = m.groups()
|
||
# Strip trailing dots from version and release
|
||
if release[-1] == '.':
|
||
release = release[:-1]
|
||
if version[-1] == '.':
|
||
version = version[:-1]
|
||
# Normalize the version and build strings (eliminating additional
|
||
# zeros)
|
||
version = _norm_version(version)
|
||
return system, release, version
|
||
|
||
|
||
def _wmi_query(table, *keys):
|
||
global _wmi
|
||
if not _wmi:
|
||
raise OSError("not supported")
|
||
table = {
|
||
"OS": "Win32_OperatingSystem",
|
||
"CPU": "Win32_Processor",
|
||
}[table]
|
||
try:
|
||
data = _wmi.exec_query("SELECT {} FROM {}".format(
|
||
",".join(keys),
|
||
table,
|
||
)).split("\0")
|
||
except OSError:
|
||
_wmi = None
|
||
raise OSError("not supported")
|
||
split_data = (i.partition("=") for i in data)
|
||
dict_data = {i[0]: i[2] for i in split_data}
|
||
return (dict_data[k] for k in keys)
|
||
|
||
|
||
_WIN32_CLIENT_RELEASES = [
|
||
((10, 1, 0), "post11"),
|
||
((10, 0, 22000), "11"),
|
||
((6, 4, 0), "10"),
|
||
((6, 3, 0), "8.1"),
|
||
((6, 2, 0), "8"),
|
||
((6, 1, 0), "7"),
|
||
((6, 0, 0), "Vista"),
|
||
((5, 2, 3790), "XP64"),
|
||
((5, 2, 0), "XPMedia"),
|
||
((5, 1, 0), "XP"),
|
||
((5, 0, 0), "2000"),
|
||
]
|
||
|
||
_WIN32_SERVER_RELEASES = [
|
||
((10, 1, 0), "post2022Server"),
|
||
((10, 0, 20348), "2022Server"),
|
||
((10, 0, 17763), "2019Server"),
|
||
((6, 4, 0), "2016Server"),
|
||
((6, 3, 0), "2012ServerR2"),
|
||
((6, 2, 0), "2012Server"),
|
||
((6, 1, 0), "2008ServerR2"),
|
||
((6, 0, 0), "2008Server"),
|
||
((5, 2, 0), "2003Server"),
|
||
((5, 0, 0), "2000Server"),
|
||
]
|
||
|
||
def win32_is_iot():
|
||
return win32_edition() in ('IoTUAP', 'NanoServer', 'WindowsCoreHeadless', 'IoTEdgeOS')
|
||
|
||
def win32_edition():
|
||
try:
|
||
import winreg
|
||
except ImportError:
|
||
pass
|
||
else:
|
||
try:
|
||
cvkey = r'SOFTWARE\Microsoft\Windows NT\CurrentVersion'
|
||
with winreg.OpenKeyEx(winreg.HKEY_LOCAL_MACHINE, cvkey) as key:
|
||
return winreg.QueryValueEx(key, 'EditionId')[0]
|
||
except OSError:
|
||
pass
|
||
|
||
return None
|
||
|
||
def _win32_ver(version, csd, ptype):
|
||
# Try using WMI first, as this is the canonical source of data
|
||
try:
|
||
(version, product_type, ptype, spmajor, spminor) = _wmi_query(
|
||
'OS',
|
||
'Version',
|
||
'ProductType',
|
||
'BuildType',
|
||
'ServicePackMajorVersion',
|
||
'ServicePackMinorVersion',
|
||
)
|
||
is_client = (int(product_type) == 1)
|
||
if spminor and spminor != '0':
|
||
csd = f'SP{spmajor}.{spminor}'
|
||
else:
|
||
csd = f'SP{spmajor}'
|
||
return version, csd, ptype, is_client
|
||
except OSError:
|
||
pass
|
||
|
||
# Fall back to a combination of sys.getwindowsversion and "ver"
|
||
try:
|
||
from sys import getwindowsversion
|
||
except ImportError:
|
||
return version, csd, ptype, True
|
||
|
||
winver = getwindowsversion()
|
||
is_client = (getattr(winver, 'product_type', 1) == 1)
|
||
try:
|
||
version = _syscmd_ver()[2]
|
||
major, minor, build = map(int, version.split('.'))
|
||
except ValueError:
|
||
major, minor, build = winver.platform_version or winver[:3]
|
||
version = '{0}.{1}.{2}'.format(major, minor, build)
|
||
|
||
# getwindowsversion() reflect the compatibility mode Python is
|
||
# running under, and so the service pack value is only going to be
|
||
# valid if the versions match.
|
||
if winver[:2] == (major, minor):
|
||
try:
|
||
csd = 'SP{}'.format(winver.service_pack_major)
|
||
except AttributeError:
|
||
if csd[:13] == 'Service Pack ':
|
||
csd = 'SP' + csd[13:]
|
||
|
||
try:
|
||
import winreg
|
||
except ImportError:
|
||
pass
|
||
else:
|
||
try:
|
||
cvkey = r'SOFTWARE\Microsoft\Windows NT\CurrentVersion'
|
||
with winreg.OpenKeyEx(winreg.HKEY_LOCAL_MACHINE, cvkey) as key:
|
||
ptype = winreg.QueryValueEx(key, 'CurrentType')[0]
|
||
except OSError:
|
||
pass
|
||
|
||
return version, csd, ptype, is_client
|
||
|
||
def win32_ver(release='', version='', csd='', ptype=''):
|
||
is_client = False
|
||
|
||
version, csd, ptype, is_client = _win32_ver(version, csd, ptype)
|
||
|
||
if version:
|
||
intversion = tuple(map(int, version.split('.')))
|
||
releases = _WIN32_CLIENT_RELEASES if is_client else _WIN32_SERVER_RELEASES
|
||
release = next((r for v, r in releases if v <= intversion), release)
|
||
|
||
return release, version, csd, ptype
|
||
|
||
|
||
def _mac_ver_xml():
|
||
fn = '/System/Library/CoreServices/SystemVersion.plist'
|
||
if not os.path.exists(fn):
|
||
return None
|
||
|
||
try:
|
||
import plistlib
|
||
except ImportError:
|
||
return None
|
||
|
||
with open(fn, 'rb') as f:
|
||
pl = plistlib.load(f)
|
||
release = pl['ProductVersion']
|
||
versioninfo = ('', '', '')
|
||
machine = os.uname().machine
|
||
if machine in ('ppc', 'Power Macintosh'):
|
||
# Canonical name
|
||
machine = 'PowerPC'
|
||
|
||
return release, versioninfo, machine
|
||
|
||
|
||
def mac_ver(release='', versioninfo=('', '', ''), machine=''):
|
||
|
||
""" Get macOS version information and return it as tuple (release,
|
||
versioninfo, machine) with versioninfo being a tuple (version,
|
||
dev_stage, non_release_version).
|
||
|
||
Entries which cannot be determined are set to the parameter values
|
||
which default to ''. All tuple entries are strings.
|
||
"""
|
||
|
||
# First try reading the information from an XML file which should
|
||
# always be present
|
||
info = _mac_ver_xml()
|
||
if info is not None:
|
||
return info
|
||
|
||
# If that also doesn't work return the default values
|
||
return release, versioninfo, machine
|
||
|
||
|
||
# A namedtuple for iOS version information.
|
||
IOSVersionInfo = collections.namedtuple(
|
||
"IOSVersionInfo",
|
||
["system", "release", "model", "is_simulator"]
|
||
)
|
||
|
||
|
||
def ios_ver(system="", release="", model="", is_simulator=False):
|
||
"""Get iOS version information, and return it as a namedtuple:
|
||
(system, release, model, is_simulator).
|
||
|
||
If values can't be determined, they are set to values provided as
|
||
parameters.
|
||
"""
|
||
if sys.platform == "ios":
|
||
import _ios_support
|
||
result = _ios_support.get_platform_ios()
|
||
if result is not None:
|
||
return IOSVersionInfo(*result)
|
||
|
||
return IOSVersionInfo(system, release, model, is_simulator)
|
||
|
||
|
||
def _java_getprop(name, default):
|
||
"""This private helper is deprecated in 3.13 and will be removed in 3.15"""
|
||
from java.lang import System
|
||
try:
|
||
value = System.getProperty(name)
|
||
if value is None:
|
||
return default
|
||
return value
|
||
except AttributeError:
|
||
return default
|
||
|
||
def java_ver(release='', vendor='', vminfo=('', '', ''), osinfo=('', '', '')):
|
||
|
||
""" Version interface for Jython.
|
||
|
||
Returns a tuple (release, vendor, vminfo, osinfo) with vminfo being
|
||
a tuple (vm_name, vm_release, vm_vendor) and osinfo being a
|
||
tuple (os_name, os_version, os_arch).
|
||
|
||
Values which cannot be determined are set to the defaults
|
||
given as parameters (which all default to '').
|
||
|
||
"""
|
||
import warnings
|
||
warnings._deprecated('java_ver', remove=(3, 15))
|
||
# Import the needed APIs
|
||
try:
|
||
import java.lang # noqa: F401
|
||
except ImportError:
|
||
return release, vendor, vminfo, osinfo
|
||
|
||
vendor = _java_getprop('java.vendor', vendor)
|
||
release = _java_getprop('java.version', release)
|
||
vm_name, vm_release, vm_vendor = vminfo
|
||
vm_name = _java_getprop('java.vm.name', vm_name)
|
||
vm_vendor = _java_getprop('java.vm.vendor', vm_vendor)
|
||
vm_release = _java_getprop('java.vm.version', vm_release)
|
||
vminfo = vm_name, vm_release, vm_vendor
|
||
os_name, os_version, os_arch = osinfo
|
||
os_arch = _java_getprop('java.os.arch', os_arch)
|
||
os_name = _java_getprop('java.os.name', os_name)
|
||
os_version = _java_getprop('java.os.version', os_version)
|
||
osinfo = os_name, os_version, os_arch
|
||
|
||
return release, vendor, vminfo, osinfo
|
||
|
||
|
||
AndroidVer = collections.namedtuple(
|
||
"AndroidVer", "release api_level manufacturer model device is_emulator")
|
||
|
||
def android_ver(release="", api_level=0, manufacturer="", model="", device="",
|
||
is_emulator=False):
|
||
if sys.platform == "android":
|
||
try:
|
||
from ctypes import CDLL, c_char_p, create_string_buffer
|
||
except ImportError:
|
||
pass
|
||
else:
|
||
# An NDK developer confirmed that this is an officially-supported
|
||
# API (https://stackoverflow.com/a/28416743). Use `getattr` to avoid
|
||
# private name mangling.
|
||
system_property_get = getattr(CDLL("libc.so"), "__system_property_get")
|
||
system_property_get.argtypes = (c_char_p, c_char_p)
|
||
|
||
def getprop(name, default):
|
||
# https://android.googlesource.com/platform/bionic/+/refs/tags/android-5.0.0_r1/libc/include/sys/system_properties.h#39
|
||
PROP_VALUE_MAX = 92
|
||
buffer = create_string_buffer(PROP_VALUE_MAX)
|
||
length = system_property_get(name.encode("UTF-8"), buffer)
|
||
if length == 0:
|
||
# This API doesn’t distinguish between an empty property and
|
||
# a missing one.
|
||
return default
|
||
else:
|
||
return buffer.value.decode("UTF-8", "backslashreplace")
|
||
|
||
release = getprop("ro.build.version.release", release)
|
||
api_level = int(getprop("ro.build.version.sdk", api_level))
|
||
manufacturer = getprop("ro.product.manufacturer", manufacturer)
|
||
model = getprop("ro.product.model", model)
|
||
device = getprop("ro.product.device", device)
|
||
is_emulator = getprop("ro.kernel.qemu", "0") == "1"
|
||
|
||
return AndroidVer(
|
||
release, api_level, manufacturer, model, device, is_emulator)
|
||
|
||
|
||
### System name aliasing
|
||
|
||
def system_alias(system, release, version):
|
||
|
||
""" Returns (system, release, version) aliased to common
|
||
marketing names used for some systems.
|
||
|
||
It also does some reordering of the information in some cases
|
||
where it would otherwise cause confusion.
|
||
|
||
"""
|
||
if system == 'SunOS':
|
||
# Sun's OS
|
||
if release < '5':
|
||
# These releases use the old name SunOS
|
||
return system, release, version
|
||
# Modify release (marketing release = SunOS release - 3)
|
||
l = release.split('.')
|
||
if l:
|
||
try:
|
||
major = int(l[0])
|
||
except ValueError:
|
||
pass
|
||
else:
|
||
major = major - 3
|
||
l[0] = str(major)
|
||
release = '.'.join(l)
|
||
if release < '6':
|
||
system = 'Solaris'
|
||
else:
|
||
# XXX Whatever the new SunOS marketing name is...
|
||
system = 'Solaris'
|
||
|
||
elif system in ('win32', 'win16'):
|
||
# In case one of the other tricks
|
||
system = 'Windows'
|
||
|
||
# bpo-35516: Don't replace Darwin with macOS since input release and
|
||
# version arguments can be different than the currently running version.
|
||
|
||
return system, release, version
|
||
|
||
### Various internal helpers
|
||
|
||
def _platform(*args):
|
||
|
||
""" Helper to format the platform string in a filename
|
||
compatible format e.g. "system-version-machine".
|
||
"""
|
||
# Format the platform string
|
||
platform = '-'.join(x.strip() for x in filter(len, args))
|
||
|
||
# Cleanup some possible filename obstacles...
|
||
platform = platform.replace(' ', '_')
|
||
platform = platform.replace('/', '-')
|
||
platform = platform.replace('\\', '-')
|
||
platform = platform.replace(':', '-')
|
||
platform = platform.replace(';', '-')
|
||
platform = platform.replace('"', '-')
|
||
platform = platform.replace('(', '-')
|
||
platform = platform.replace(')', '-')
|
||
|
||
# No need to report 'unknown' information...
|
||
platform = platform.replace('unknown', '')
|
||
|
||
# Fold '--'s and remove trailing '-'
|
||
while True:
|
||
cleaned = platform.replace('--', '-')
|
||
if cleaned == platform:
|
||
break
|
||
platform = cleaned
|
||
while platform and platform[-1] == '-':
|
||
platform = platform[:-1]
|
||
|
||
return platform
|
||
|
||
def _node(default=''):
|
||
|
||
""" Helper to determine the node name of this machine.
|
||
"""
|
||
try:
|
||
import socket
|
||
except ImportError:
|
||
# No sockets...
|
||
return default
|
||
try:
|
||
return socket.gethostname()
|
||
except OSError:
|
||
# Still not working...
|
||
return default
|
||
|
||
def _follow_symlinks(filepath):
|
||
|
||
""" In case filepath is a symlink, follow it until a
|
||
real file is reached.
|
||
"""
|
||
filepath = os.path.abspath(filepath)
|
||
while os.path.islink(filepath):
|
||
filepath = os.path.normpath(
|
||
os.path.join(os.path.dirname(filepath), os.readlink(filepath)))
|
||
return filepath
|
||
|
||
|
||
def _syscmd_file(target, default=''):
|
||
|
||
""" Interface to the system's file command.
|
||
|
||
The function uses the -b option of the file command to have it
|
||
omit the filename in its output. Follow the symlinks. It returns
|
||
default in case the command should fail.
|
||
|
||
"""
|
||
if sys.platform in {'dos', 'win32', 'win16', 'ios', 'tvos', 'watchos'}:
|
||
# XXX Others too ?
|
||
return default
|
||
|
||
try:
|
||
import subprocess
|
||
except ImportError:
|
||
return default
|
||
target = _follow_symlinks(target)
|
||
# "file" output is locale dependent: force the usage of the C locale
|
||
# to get deterministic behavior.
|
||
env = dict(os.environ, LC_ALL='C')
|
||
try:
|
||
# -b: do not prepend filenames to output lines (brief mode)
|
||
output = subprocess.check_output(['file', '-b', target],
|
||
stderr=subprocess.DEVNULL,
|
||
env=env)
|
||
except (OSError, subprocess.CalledProcessError):
|
||
return default
|
||
if not output:
|
||
return default
|
||
# With the C locale, the output should be mostly ASCII-compatible.
|
||
# Decode from Latin-1 to prevent Unicode decode error.
|
||
return output.decode('latin-1')
|
||
|
||
### Information about the used architecture
|
||
|
||
# Default values for architecture; non-empty strings override the
|
||
# defaults given as parameters
|
||
_default_architecture = {
|
||
'win32': ('', 'WindowsPE'),
|
||
'win16': ('', 'Windows'),
|
||
'dos': ('', 'MSDOS'),
|
||
}
|
||
|
||
def architecture(executable=sys.executable, bits='', linkage=''):
|
||
|
||
""" Queries the given executable (defaults to the Python interpreter
|
||
binary) for various architecture information.
|
||
|
||
Returns a tuple (bits, linkage) which contains information about
|
||
the bit architecture and the linkage format used for the
|
||
executable. Both values are returned as strings.
|
||
|
||
Values that cannot be determined are returned as given by the
|
||
parameter presets. If bits is given as '', the sizeof(pointer)
|
||
(or sizeof(long) on Python version < 1.5.2) is used as
|
||
indicator for the supported pointer size.
|
||
|
||
The function relies on the system's "file" command to do the
|
||
actual work. This is available on most if not all Unix
|
||
platforms. On some non-Unix platforms where the "file" command
|
||
does not exist and the executable is set to the Python interpreter
|
||
binary defaults from _default_architecture are used.
|
||
|
||
"""
|
||
# Use the sizeof(pointer) as default number of bits if nothing
|
||
# else is given as default.
|
||
if not bits:
|
||
import struct
|
||
size = struct.calcsize('P')
|
||
bits = str(size * 8) + 'bit'
|
||
|
||
# Get data from the 'file' system command
|
||
if executable:
|
||
fileout = _syscmd_file(executable, '')
|
||
else:
|
||
fileout = ''
|
||
|
||
if not fileout and \
|
||
executable == sys.executable:
|
||
# "file" command did not return anything; we'll try to provide
|
||
# some sensible defaults then...
|
||
if sys.platform in _default_architecture:
|
||
b, l = _default_architecture[sys.platform]
|
||
if b:
|
||
bits = b
|
||
if l:
|
||
linkage = l
|
||
return bits, linkage
|
||
|
||
if 'executable' not in fileout and 'shared object' not in fileout:
|
||
# Format not supported
|
||
return bits, linkage
|
||
|
||
# Bits
|
||
if '32-bit' in fileout:
|
||
bits = '32bit'
|
||
elif '64-bit' in fileout:
|
||
bits = '64bit'
|
||
|
||
# Linkage
|
||
if 'ELF' in fileout:
|
||
linkage = 'ELF'
|
||
elif 'Mach-O' in fileout:
|
||
linkage = "Mach-O"
|
||
elif 'PE' in fileout:
|
||
# E.g. Windows uses this format
|
||
if 'Windows' in fileout:
|
||
linkage = 'WindowsPE'
|
||
else:
|
||
linkage = 'PE'
|
||
elif 'COFF' in fileout:
|
||
linkage = 'COFF'
|
||
elif 'MS-DOS' in fileout:
|
||
linkage = 'MSDOS'
|
||
else:
|
||
# XXX the A.OUT format also falls under this class...
|
||
pass
|
||
|
||
return bits, linkage
|
||
|
||
|
||
def _get_machine_win32():
|
||
# Try to use the PROCESSOR_* environment variables
|
||
# available on Win XP and later; see
|
||
# http://support.microsoft.com/kb/888731 and
|
||
# http://www.geocities.com/rick_lively/MANUALS/ENV/MSWIN/PROCESSI.HTM
|
||
|
||
# WOW64 processes mask the native architecture
|
||
try:
|
||
[arch, *_] = _wmi_query('CPU', 'Architecture')
|
||
except OSError:
|
||
pass
|
||
else:
|
||
try:
|
||
arch = ['x86', 'MIPS', 'Alpha', 'PowerPC', None,
|
||
'ARM', 'ia64', None, None,
|
||
'AMD64', None, None, 'ARM64',
|
||
][int(arch)]
|
||
except (ValueError, IndexError):
|
||
pass
|
||
else:
|
||
if arch:
|
||
return arch
|
||
return (
|
||
os.environ.get('PROCESSOR_ARCHITEW6432', '') or
|
||
os.environ.get('PROCESSOR_ARCHITECTURE', '')
|
||
)
|
||
|
||
|
||
class _Processor:
|
||
@classmethod
|
||
def get(cls):
|
||
func = getattr(cls, f'get_{sys.platform}', cls.from_subprocess)
|
||
return func() or ''
|
||
|
||
def get_win32():
|
||
try:
|
||
manufacturer, caption = _wmi_query('CPU', 'Manufacturer', 'Caption')
|
||
except OSError:
|
||
return os.environ.get('PROCESSOR_IDENTIFIER', _get_machine_win32())
|
||
else:
|
||
return f'{caption}, {manufacturer}'
|
||
|
||
def get_OpenVMS():
|
||
try:
|
||
import vms_lib
|
||
except ImportError:
|
||
pass
|
||
else:
|
||
csid, cpu_number = vms_lib.getsyi('SYI$_CPU', 0)
|
||
return 'Alpha' if cpu_number >= 128 else 'VAX'
|
||
|
||
# On the iOS simulator, os.uname returns the architecture as uname.machine.
|
||
# On device it returns the model name for some reason; but there's only one
|
||
# CPU architecture for iOS devices, so we know the right answer.
|
||
def get_ios():
|
||
if sys.implementation._multiarch.endswith("simulator"):
|
||
return os.uname().machine
|
||
return 'arm64'
|
||
|
||
def from_subprocess():
|
||
"""
|
||
Fall back to `uname -p`
|
||
"""
|
||
try:
|
||
import subprocess
|
||
except ImportError:
|
||
return None
|
||
try:
|
||
return subprocess.check_output(
|
||
['uname', '-p'],
|
||
stderr=subprocess.DEVNULL,
|
||
text=True,
|
||
encoding="utf8",
|
||
).strip()
|
||
except (OSError, subprocess.CalledProcessError):
|
||
pass
|
||
|
||
|
||
def _unknown_as_blank(val):
|
||
return '' if val == 'unknown' else val
|
||
|
||
|
||
### Portable uname() interface
|
||
|
||
class uname_result(
|
||
collections.namedtuple(
|
||
"uname_result_base",
|
||
"system node release version machine")
|
||
):
|
||
"""
|
||
A uname_result that's largely compatible with a
|
||
simple namedtuple except that 'processor' is
|
||
resolved late and cached to avoid calling "uname"
|
||
except when needed.
|
||
"""
|
||
|
||
_fields = ('system', 'node', 'release', 'version', 'machine', 'processor')
|
||
|
||
@functools.cached_property
|
||
def processor(self):
|
||
return _unknown_as_blank(_Processor.get())
|
||
|
||
def __iter__(self):
|
||
return itertools.chain(
|
||
super().__iter__(),
|
||
(self.processor,)
|
||
)
|
||
|
||
@classmethod
|
||
def _make(cls, iterable):
|
||
# override factory to affect length check
|
||
num_fields = len(cls._fields) - 1
|
||
result = cls.__new__(cls, *iterable)
|
||
if len(result) != num_fields + 1:
|
||
msg = f'Expected {num_fields} arguments, got {len(result)}'
|
||
raise TypeError(msg)
|
||
return result
|
||
|
||
def __getitem__(self, key):
|
||
return tuple(self)[key]
|
||
|
||
def __len__(self):
|
||
return len(tuple(iter(self)))
|
||
|
||
def __reduce__(self):
|
||
return uname_result, tuple(self)[:len(self._fields) - 1]
|
||
|
||
|
||
_uname_cache = None
|
||
|
||
|
||
def uname():
|
||
|
||
""" Fairly portable uname interface. Returns a tuple
|
||
of strings (system, node, release, version, machine, processor)
|
||
identifying the underlying platform.
|
||
|
||
Note that unlike the os.uname function this also returns
|
||
possible processor information as an additional tuple entry.
|
||
|
||
Entries which cannot be determined are set to ''.
|
||
|
||
"""
|
||
global _uname_cache
|
||
|
||
if _uname_cache is not None:
|
||
return _uname_cache
|
||
|
||
# Get some infos from the builtin os.uname API...
|
||
try:
|
||
system, node, release, version, machine = infos = os.uname()
|
||
except AttributeError:
|
||
system = sys.platform
|
||
node = _node()
|
||
release = version = machine = ''
|
||
infos = ()
|
||
|
||
if not any(infos):
|
||
# uname is not available
|
||
|
||
# Try win32_ver() on win32 platforms
|
||
if system == 'win32':
|
||
release, version, csd, ptype = win32_ver()
|
||
machine = machine or _get_machine_win32()
|
||
|
||
# Try the 'ver' system command available on some
|
||
# platforms
|
||
if not (release and version):
|
||
system, release, version = _syscmd_ver(system)
|
||
# Normalize system to what win32_ver() normally returns
|
||
# (_syscmd_ver() tends to return the vendor name as well)
|
||
if system == 'Microsoft Windows':
|
||
system = 'Windows'
|
||
elif system == 'Microsoft' and release == 'Windows':
|
||
# Under Windows Vista and Windows Server 2008,
|
||
# Microsoft changed the output of the ver command. The
|
||
# release is no longer printed. This causes the
|
||
# system and release to be misidentified.
|
||
system = 'Windows'
|
||
if '6.0' == version[:3]:
|
||
release = 'Vista'
|
||
else:
|
||
release = ''
|
||
|
||
# In case we still don't know anything useful, we'll try to
|
||
# help ourselves
|
||
if system in ('win32', 'win16'):
|
||
if not version:
|
||
if system == 'win32':
|
||
version = '32bit'
|
||
else:
|
||
version = '16bit'
|
||
system = 'Windows'
|
||
|
||
elif system[:4] == 'java':
|
||
release, vendor, vminfo, osinfo = java_ver()
|
||
system = 'Java'
|
||
version = ', '.join(vminfo)
|
||
if not version:
|
||
version = vendor
|
||
|
||
# System specific extensions
|
||
if system == 'OpenVMS':
|
||
# OpenVMS seems to have release and version mixed up
|
||
if not release or release == '0':
|
||
release = version
|
||
version = ''
|
||
|
||
# normalize name
|
||
if system == 'Microsoft' and release == 'Windows':
|
||
system = 'Windows'
|
||
release = 'Vista'
|
||
|
||
# On Android, return the name and version of the OS rather than the kernel.
|
||
if sys.platform == 'android':
|
||
system = 'Android'
|
||
release = android_ver().release
|
||
|
||
# Normalize responses on iOS
|
||
if sys.platform == 'ios':
|
||
system, release, _, _ = ios_ver()
|
||
|
||
vals = system, node, release, version, machine
|
||
# Replace 'unknown' values with the more portable ''
|
||
_uname_cache = uname_result(*map(_unknown_as_blank, vals))
|
||
return _uname_cache
|
||
|
||
### Direct interfaces to some of the uname() return values
|
||
|
||
def system():
|
||
|
||
""" Returns the system/OS name, e.g. 'Linux', 'Windows' or 'Java'.
|
||
|
||
An empty string is returned if the value cannot be determined.
|
||
|
||
"""
|
||
return uname().system
|
||
|
||
def node():
|
||
|
||
""" Returns the computer's network name (which may not be fully
|
||
qualified)
|
||
|
||
An empty string is returned if the value cannot be determined.
|
||
|
||
"""
|
||
return uname().node
|
||
|
||
def release():
|
||
|
||
""" Returns the system's release, e.g. '2.2.0' or 'NT'
|
||
|
||
An empty string is returned if the value cannot be determined.
|
||
|
||
"""
|
||
return uname().release
|
||
|
||
def version():
|
||
|
||
""" Returns the system's release version, e.g. '#3 on degas'
|
||
|
||
An empty string is returned if the value cannot be determined.
|
||
|
||
"""
|
||
return uname().version
|
||
|
||
def machine():
|
||
|
||
""" Returns the machine type, e.g. 'i386'
|
||
|
||
An empty string is returned if the value cannot be determined.
|
||
|
||
"""
|
||
return uname().machine
|
||
|
||
def processor():
|
||
|
||
""" Returns the (true) processor name, e.g. 'amdk6'
|
||
|
||
An empty string is returned if the value cannot be
|
||
determined. Note that many platforms do not provide this
|
||
information or simply return the same value as for machine(),
|
||
e.g. NetBSD does this.
|
||
|
||
"""
|
||
return uname().processor
|
||
|
||
### Various APIs for extracting information from sys.version
|
||
|
||
_sys_version_cache = {}
|
||
|
||
def _sys_version(sys_version=None):
|
||
|
||
""" Returns a parsed version of Python's sys.version as tuple
|
||
(name, version, branch, revision, buildno, builddate, compiler)
|
||
referring to the Python implementation name, version, branch,
|
||
revision, build number, build date/time as string and the compiler
|
||
identification string.
|
||
|
||
Note that unlike the Python sys.version, the returned value
|
||
for the Python version will always include the patchlevel (it
|
||
defaults to '.0').
|
||
|
||
The function returns empty strings for tuple entries that
|
||
cannot be determined.
|
||
|
||
sys_version may be given to parse an alternative version
|
||
string, e.g. if the version was read from a different Python
|
||
interpreter.
|
||
|
||
"""
|
||
# Get the Python version
|
||
if sys_version is None:
|
||
sys_version = sys.version
|
||
|
||
# Try the cache first
|
||
result = _sys_version_cache.get(sys_version, None)
|
||
if result is not None:
|
||
return result
|
||
|
||
if sys.platform.startswith('java'):
|
||
# Jython
|
||
jython_sys_version_parser = re.compile(
|
||
r'([\w.+]+)\s*' # "version<space>"
|
||
r'\(#?([^,]+)' # "(#buildno"
|
||
r'(?:,\s*([\w ]*)' # ", builddate"
|
||
r'(?:,\s*([\w :]*))?)?\)\s*' # ", buildtime)<space>"
|
||
r'\[([^\]]+)\]?', re.ASCII) # "[compiler]"
|
||
name = 'Jython'
|
||
match = jython_sys_version_parser.match(sys_version)
|
||
if match is None:
|
||
raise ValueError(
|
||
'failed to parse Jython sys.version: %s' %
|
||
repr(sys_version))
|
||
version, buildno, builddate, buildtime, _ = match.groups()
|
||
if builddate is None:
|
||
builddate = ''
|
||
compiler = sys.platform
|
||
|
||
elif "PyPy" in sys_version:
|
||
# PyPy
|
||
pypy_sys_version_parser = re.compile(
|
||
r'([\w.+]+)\s*'
|
||
r'\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'
|
||
r'\[PyPy [^\]]+\]?')
|
||
|
||
name = "PyPy"
|
||
match = pypy_sys_version_parser.match(sys_version)
|
||
if match is None:
|
||
raise ValueError("failed to parse PyPy sys.version: %s" %
|
||
repr(sys_version))
|
||
version, buildno, builddate, buildtime = match.groups()
|
||
compiler = ""
|
||
|
||
else:
|
||
# CPython
|
||
cpython_sys_version_parser = re.compile(
|
||
r'([\w.+]+)\s*' # "version<space>"
|
||
r'(?:experimental free-threading build\s+)?' # "free-threading-build<space>"
|
||
r'\(#?([^,]+)' # "(#buildno"
|
||
r'(?:,\s*([\w ]*)' # ", builddate"
|
||
r'(?:,\s*([\w :]*))?)?\)\s*' # ", buildtime)<space>"
|
||
r'\[([^\]]+)\]?', re.ASCII) # "[compiler]"
|
||
match = cpython_sys_version_parser.match(sys_version)
|
||
if match is None:
|
||
raise ValueError(
|
||
'failed to parse CPython sys.version: %s' %
|
||
repr(sys_version))
|
||
version, buildno, builddate, buildtime, compiler = \
|
||
match.groups()
|
||
name = 'CPython'
|
||
if builddate is None:
|
||
builddate = ''
|
||
elif buildtime:
|
||
builddate = builddate + ' ' + buildtime
|
||
|
||
if hasattr(sys, '_git'):
|
||
_, branch, revision = sys._git
|
||
elif hasattr(sys, '_mercurial'):
|
||
_, branch, revision = sys._mercurial
|
||
else:
|
||
branch = ''
|
||
revision = ''
|
||
|
||
# Add the patchlevel version if missing
|
||
l = version.split('.')
|
||
if len(l) == 2:
|
||
l.append('0')
|
||
version = '.'.join(l)
|
||
|
||
# Build and cache the result
|
||
result = (name, version, branch, revision, buildno, builddate, compiler)
|
||
_sys_version_cache[sys_version] = result
|
||
return result
|
||
|
||
def python_implementation():
|
||
|
||
""" Returns a string identifying the Python implementation.
|
||
|
||
Currently, the following implementations are identified:
|
||
'CPython' (C implementation of Python),
|
||
'Jython' (Java implementation of Python),
|
||
'PyPy' (Python implementation of Python).
|
||
|
||
"""
|
||
return _sys_version()[0]
|
||
|
||
def python_version():
|
||
|
||
""" Returns the Python version as string 'major.minor.patchlevel'
|
||
|
||
Note that unlike the Python sys.version, the returned value
|
||
will always include the patchlevel (it defaults to 0).
|
||
|
||
"""
|
||
return _sys_version()[1]
|
||
|
||
def python_version_tuple():
|
||
|
||
""" Returns the Python version as tuple (major, minor, patchlevel)
|
||
of strings.
|
||
|
||
Note that unlike the Python sys.version, the returned value
|
||
will always include the patchlevel (it defaults to 0).
|
||
|
||
"""
|
||
return tuple(_sys_version()[1].split('.'))
|
||
|
||
def python_branch():
|
||
|
||
""" Returns a string identifying the Python implementation
|
||
branch.
|
||
|
||
For CPython this is the SCM branch from which the
|
||
Python binary was built.
|
||
|
||
If not available, an empty string is returned.
|
||
|
||
"""
|
||
|
||
return _sys_version()[2]
|
||
|
||
def python_revision():
|
||
|
||
""" Returns a string identifying the Python implementation
|
||
revision.
|
||
|
||
For CPython this is the SCM revision from which the
|
||
Python binary was built.
|
||
|
||
If not available, an empty string is returned.
|
||
|
||
"""
|
||
return _sys_version()[3]
|
||
|
||
def python_build():
|
||
|
||
""" Returns a tuple (buildno, builddate) stating the Python
|
||
build number and date as strings.
|
||
|
||
"""
|
||
return _sys_version()[4:6]
|
||
|
||
def python_compiler():
|
||
|
||
""" Returns a string identifying the compiler used for compiling
|
||
Python.
|
||
|
||
"""
|
||
return _sys_version()[6]
|
||
|
||
### The Opus Magnum of platform strings :-)
|
||
|
||
_platform_cache = {}
|
||
|
||
def platform(aliased=False, terse=False):
|
||
|
||
""" Returns a single string identifying the underlying platform
|
||
with as much useful information as possible (but no more :).
|
||
|
||
The output is intended to be human readable rather than
|
||
machine parseable. It may look different on different
|
||
platforms and this is intended.
|
||
|
||
If "aliased" is true, the function will use aliases for
|
||
various platforms that report system names which differ from
|
||
their common names, e.g. SunOS will be reported as
|
||
Solaris. The system_alias() function is used to implement
|
||
this.
|
||
|
||
Setting terse to true causes the function to return only the
|
||
absolute minimum information needed to identify the platform.
|
||
|
||
"""
|
||
result = _platform_cache.get((aliased, terse), None)
|
||
if result is not None:
|
||
return result
|
||
|
||
# Get uname information and then apply platform specific cosmetics
|
||
# to it...
|
||
system, node, release, version, machine, processor = uname()
|
||
if machine == processor:
|
||
processor = ''
|
||
if aliased:
|
||
system, release, version = system_alias(system, release, version)
|
||
|
||
if system == 'Darwin':
|
||
# macOS and iOS both report as a "Darwin" kernel
|
||
if sys.platform == "ios":
|
||
system, release, _, _ = ios_ver()
|
||
else:
|
||
macos_release = mac_ver()[0]
|
||
if macos_release:
|
||
system = 'macOS'
|
||
release = macos_release
|
||
|
||
if system == 'Windows':
|
||
# MS platforms
|
||
rel, vers, csd, ptype = win32_ver(version)
|
||
if terse:
|
||
platform = _platform(system, release)
|
||
else:
|
||
platform = _platform(system, release, version, csd)
|
||
|
||
elif system == 'Linux':
|
||
# check for libc vs. glibc
|
||
libcname, libcversion = libc_ver()
|
||
platform = _platform(system, release, machine, processor,
|
||
'with',
|
||
libcname+libcversion)
|
||
elif system == 'Java':
|
||
# Java platforms
|
||
r, v, vminfo, (os_name, os_version, os_arch) = java_ver()
|
||
if terse or not os_name:
|
||
platform = _platform(system, release, version)
|
||
else:
|
||
platform = _platform(system, release, version,
|
||
'on',
|
||
os_name, os_version, os_arch)
|
||
|
||
else:
|
||
# Generic handler
|
||
if terse:
|
||
platform = _platform(system, release)
|
||
else:
|
||
bits, linkage = architecture(sys.executable)
|
||
platform = _platform(system, release, machine,
|
||
processor, bits, linkage)
|
||
|
||
_platform_cache[(aliased, terse)] = platform
|
||
return platform
|
||
|
||
### freedesktop.org os-release standard
|
||
# https://www.freedesktop.org/software/systemd/man/os-release.html
|
||
|
||
# /etc takes precedence over /usr/lib
|
||
_os_release_candidates = ("/etc/os-release", "/usr/lib/os-release")
|
||
_os_release_cache = None
|
||
|
||
|
||
def _parse_os_release(lines):
|
||
# These fields are mandatory fields with well-known defaults
|
||
# in practice all Linux distributions override NAME, ID, and PRETTY_NAME.
|
||
info = {
|
||
"NAME": "Linux",
|
||
"ID": "linux",
|
||
"PRETTY_NAME": "Linux",
|
||
}
|
||
|
||
# NAME=value with optional quotes (' or "). The regular expression is less
|
||
# strict than shell lexer, but that's ok.
|
||
os_release_line = re.compile(
|
||
"^(?P<name>[a-zA-Z0-9_]+)=(?P<quote>[\"\']?)(?P<value>.*)(?P=quote)$"
|
||
)
|
||
# unescape five special characters mentioned in the standard
|
||
os_release_unescape = re.compile(r"\\([\\\$\"\'`])")
|
||
|
||
for line in lines:
|
||
mo = os_release_line.match(line)
|
||
if mo is not None:
|
||
info[mo.group('name')] = os_release_unescape.sub(
|
||
r"\1", mo.group('value')
|
||
)
|
||
|
||
return info
|
||
|
||
|
||
def freedesktop_os_release():
|
||
"""Return operation system identification from freedesktop.org os-release
|
||
"""
|
||
global _os_release_cache
|
||
|
||
if _os_release_cache is None:
|
||
errno = None
|
||
for candidate in _os_release_candidates:
|
||
try:
|
||
with open(candidate, encoding="utf-8") as f:
|
||
_os_release_cache = _parse_os_release(f)
|
||
break
|
||
except OSError as e:
|
||
errno = e.errno
|
||
else:
|
||
raise OSError(
|
||
errno,
|
||
f"Unable to read files {', '.join(_os_release_candidates)}"
|
||
)
|
||
|
||
return _os_release_cache.copy()
|
||
|
||
|
||
### Command line interface
|
||
|
||
if __name__ == '__main__':
|
||
# Default is to print the aliased verbose platform string
|
||
terse = ('terse' in sys.argv or '--terse' in sys.argv)
|
||
aliased = (not 'nonaliased' in sys.argv and not '--nonaliased' in sys.argv)
|
||
print(platform(aliased, terse))
|
||
sys.exit(0)
|