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Bump version number and change copyright year. 

Add new API linux_distribution() which supports reading the full distribution
name and also knows how to parse LSB-style release files.

Redirect the old dist() API to the new API (using the short distribution name
taken from the release file filename).

Add branch and revision to _sys_version().

Add work-around for Cygwin to libc_ver().

Add support for IronPython (thanks for Anthony Baxter) and make
Jython support more robust.
This commit is contained in:
Marc-André Lemburg 2007-01-13 21:00:08 +00:00
parent 7ded34d25e
commit 9e0dc960d7
1 changed files with 269 additions and 73 deletions
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342
Lib/platform.py
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@ -28,12 +28,15 @@
# 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
# Colin Kong, Trent Mick, Guido van Rossum, Anthony Baxter
#
# History:
#
# <see CVS and SVN checkin messages for history>
#
# 1.0.6 - added linux_distribution()
# 1.0.5 - fixed Java support to allow running the module on Jython
# 1.0.4 - added IronPython support
# 1.0.3 - added normalization of Windows system name
# 1.0.2 - added more Windows support
# 1.0.1 - reformatted to make doc.py happy
@ -88,7 +91,7 @@
__copyright__ = """
Copyright (c) 1999-2000, Marc-Andre Lemburg; mailto:mal@lemburg.com
Copyright (c) 2000-2003, eGenix.com Software GmbH; mailto:info@egenix.com
Copyright (c) 2000-2007, 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,
@ -107,7 +110,7 @@ __copyright__ = """
"""
__version__ = '1.0.4'
__version__ = '1.0.6'
import sys,string,os,re
@ -136,6 +139,11 @@ def libc_ver(executable=sys.executable,lib='',version='',
The file is read and scanned in chunks of chunksize bytes.
"""
if hasattr(os.path, 'realpath'):
# Python 2.2 introduced os.path.realpath(); it is used
# here to work around problems with Cygwin not being
# able to open symlinks for reading
executable = os.path.realpath(executable)
f = open(executable,'rb')
binary = f.read(chunksize)
pos = 0
@ -218,14 +226,124 @@ def _dist_try_harder(distname,version,id):
return distname,version,id
_release_filename = re.compile(r'(\w+)[-_](release|version)')
_release_version = re.compile(r'([\d.]+)[^(]*(?:\((.+)\))?')
_lsb_release_version = re.compile(r'(.+)'
' release '
'([\d.]+)'
'[^(]*(?:\((.+)\))?')
_release_version = re.compile(r'([^0-9]+)'
'(?: release )?'
'([\d.]+)'
'[^(]*(?:\((.+)\))?')
# Note:In supported_dists below we need 'fedora' before 'redhat' as in
# Fedora redhat-release is a link to fedora-release.
# See also http://www.novell.com/coolsolutions/feature/11251.html
# and http://linuxmafia.com/faq/Admin/release-files.html
# and http://data.linux-ntfs.org/rpm/whichrpm
# and http://www.die.net/doc/linux/man/man1/lsb_release.1.html
_supported_dists = ('SuSE', 'debian', 'fedora', 'redhat', 'centos',
'mandrake', 'rocks', 'slackware', 'yellowdog',
'gentoo', 'UnitedLinux')
def _parse_release_file(firstline):
# Parse the first line
m = _lsb_release_version.match(firstline)
if m is not None:
# LSB format: "distro release x.x (codename)"
return tuple(m.groups())
# Pre-LSB format: "distro x.x (codename)"
m = _release_version.match(firstline)
if m is not None:
return tuple(m.groups())
# Unkown format... take the first two words
l = string.split(string.strip(firstline))
if l:
version = l[0]
if len(l) > 1:
id = l[1]
else:
id = ''
return '', version, id
def _test_parse_release_file():
for input, output in (
# Examples of release file contents:
('SuSE Linux 9.3 (x86-64)', ('SuSE Linux ', '9.3', 'x86-64'))
('SUSE LINUX 10.1 (X86-64)', ('SUSE LINUX ', '10.1', 'X86-64'))
('SUSE LINUX 10.1 (i586)', ('SUSE LINUX ', '10.1', 'i586'))
('Fedora Core release 5 (Bordeaux)', ('Fedora Core', '5', 'Bordeaux'))
('Red Hat Linux release 8.0 (Psyche)', ('Red Hat Linux', '8.0', 'Psyche'))
('Red Hat Linux release 9 (Shrike)', ('Red Hat Linux', '9', 'Shrike'))
('Red Hat Enterprise Linux release 4 (Nahant)', ('Red Hat Enterprise Linux', '4', 'Nahant'))
('CentOS release 4', ('CentOS', '4', None))
('Rocks release 4.2.1 (Cydonia)', ('Rocks', '4.2.1', 'Cydonia'))
):
parsed = _parse_release_file(input)
if parsed != output:
print (input, parsed)
def linux_distribution(distname='', version='', id='',
supported_dists=_supported_dists,
full_distribution_name=1):
""" Tries to determine the name of the Linux OS distribution name.
The function first looks for a distribution release file in
/etc and then reverts to _dist_try_harder() in case no
suitable files are found.
supported_dists may be given to define the set of Linux
distributions to look for. It defaults to a list of currently
supported Linux distributions identified by their release file
name.
If full_distribution_name is true (default), the full
distribution read from the OS is returned. Otherwise the short
name taken from supported_dists is used.
Returns a tuple (distname,version,id) which default to the
args given as parameters.
"""
try:
etc = os.listdir('/etc')
except os.error:
# Probably not a Unix system
return distname,version,id
etc.sort()
for file in etc:
m = _release_filename.match(file)
if m is not None:
_distname,dummy = m.groups()
if _distname in supported_dists:
distname = _distname
break
else:
return _dist_try_harder(distname,version,id)
# Read the first line
f = open('/etc/'+file, 'r')
firstline = f.readline()
f.close()
_distname, _version, _id = _parse_release_file(firstline)
if _distname and full_distribution_name:
distname = _distname
if _version:
version = _version
if _id:
id = _id
return distname, version, id
# To maintain backwards compatibility:
def dist(distname='',version='',id='',
supported_dists=('SuSE', 'debian', 'fedora', 'redhat', 'mandrake')):
supported_dists=_supported_dists):
""" Tries to determine the name of the Linux OS distribution name.
@ -237,38 +355,9 @@ def dist(distname='',version='',id='',
args given as parameters.
"""
try:
etc = os.listdir('/etc')
except os.error:
# Probably not a Unix system
return distname,version,id
for file in etc:
m = _release_filename.match(file)
if m:
_distname,dummy = m.groups()
if _distname in supported_dists:
distname = _distname
break
else:
return _dist_try_harder(distname,version,id)
f = open('/etc/'+file,'r')
firstline = f.readline()
f.close()
m = _release_version.search(firstline)
if m:
_version,_id = m.groups()
if _version:
version = _version
if _id:
id = _id
else:
# Unkown format... take the first two words
l = string.split(string.strip(firstline))
if l:
version = l[0]
if len(l) > 1:
id = l[1]
return distname,version,id
return linux_distribution(distname, version, id,
supported_dists=supported_dists,
full_distribution_name=0)
class _popen:
@ -357,7 +446,7 @@ def popen(cmd, mode='r', bufsize=None):
else:
return popen(cmd,mode,bufsize)
def _norm_version(version,build=''):
def _norm_version(version, build=''):
""" Normalize the version and build strings and return a single
version string using the format major.minor.build (or patchlevel).
@ -378,7 +467,7 @@ _ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) '
'.*'
'Version ([\d.]+))')
def _syscmd_ver(system='',release='',version='',
def _syscmd_ver(system='', release='', version='',
supported_platforms=('win32','win16','dos','os2')):
@ -418,7 +507,7 @@ def _syscmd_ver(system='',release='',version='',
# Parse the output
info = string.strip(info)
m = _ver_output.match(info)
if m:
if m is not None:
system,release,version = m.groups()
# Strip trailing dots from version and release
if release[-1] == '.':
@ -615,8 +704,11 @@ def _java_getprop(name,default):
from java.lang import System
try:
return System.getProperty(name)
except:
value = System.getProperty(name)
if value is None:
return default
return value
except AttributeError:
return default
def java_ver(release='',vendor='',vminfo=('','',''),osinfo=('','','')):
@ -637,20 +729,20 @@ def java_ver(release='',vendor='',vminfo=('','',''),osinfo=('','','')):
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
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
return release, vendor, vminfo, osinfo
### System name aliasing
@ -716,7 +808,7 @@ def _platform(*args):
# Format the platform string
platform = string.join(
map(string.strip,
filter(len,args)),
filter(len, args)),
'-')
# Cleanup some possible filename obstacles...
@ -960,6 +1052,10 @@ def uname():
release,version,csd,ptype = win32_ver()
if release and version:
use_syscmd_ver = 0
# XXX Should try to parse 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
# Try the 'ver' system command available on some
# platforms
@ -1092,37 +1188,107 @@ def processor():
### Various APIs for extracting information from sys.version
_sys_version_parser = re.compile(r'([\w.+]+)\s*'
'\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'
'\[([^\]]+)\]?')
_sys_version_parser = re.compile(
r'([\w.+]+)\s*'
'\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'
'\[([^\]]+)\]?')
_jython_sys_version_parser = re.compile(
r'([\d\.]+)')
_ironpython_sys_version_parser = re.compile(
r'IronPython\s*'
'([\d\.]+)'
'(?: \(([\d\.]+)\))?'
' on (.NET [\d\.]+)')
_sys_version_cache = None
def _sys_version():
""" Returns a parsed version of Python's sys.version as tuple
(version, buildno, builddate, compiler) referring to the Python
version, build number, build date/time as string and the compiler
identification string.
(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.
"""
global _sys_version_cache
if _sys_version_cache is not None:
return _sys_version_cache
version, buildno, builddate, buildtime, compiler = \
_sys_version_parser.match(sys.version).groups()
builddate = builddate + ' ' + buildtime
if sys.version[:10] == 'IronPython':
# IronPython
name = 'IronPython'
match = _ironpython_sys_version_parser.match(sys.version)
if match is None:
raise ValueError(
'failed to parse IronPython sys.version: %s' %
repr(sys.version))
version, compiler = match.groups()
branch = ''
revision = ''
buildno = ''
builddate = ''
elif sys.platform[:4] == 'java':
# Jython
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, = match.groups()
branch = ''
revision = ''
compiler = sys.platform
buildno = ''
builddate = ''
else:
# CPython
match = _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()
if hasattr(sys, 'subversion'):
name, branch, revision = sys.subversion
else:
name = 'CPython'
branch = ''
revision = ''
builddate = builddate + ' ' + buildtime
l = string.split(version, '.')
if len(l) == 2:
l.append('0')
version = string.join(l, '.')
_sys_version_cache = (version, buildno, builddate, compiler)
_sys_version_cache = (name, version, branch, revision, buildno,
builddate, compiler)
return _sys_version_cache
def python_implementation():
""" Returns a string identifying the Python implementation.
Currently, the following implementations are identified:
'CPython' (C implementation of Python),
'IronPython' (.NET implementation of Python),
'Jython' (Java implementation of Python).
"""
return _sys_version()[0]
def python_version():
""" Returns the Python version as string 'major.minor.patchlevel'
@ -1131,7 +1297,9 @@ def python_version():
will always include the patchlevel (it defaults to 0).
"""
return _sys_version()[0]
if hasattr(sys, 'version_info'):
return '%i.%i.%i' % sys.version_info[:3]
return _sys_version()[1]
def python_version_tuple():
@ -1142,7 +1310,35 @@ def python_version_tuple():
will always include the patchlevel (it defaults to 0).
"""
return string.split(_sys_version()[0], '.')
if hasattr(sys, 'version_info'):
return sys.version_info[:3]
return tuple(string.split(_sys_version()[1], '.'))
def python_branch():
""" Returns a strings identifying the Python implementation
branch.
For CPython this is the Subversion 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 strings identifying the Python implementation
revision.
For CPython this is the Subversion revision from which the
Python binary was built.
If not available, an empty string is returned.
"""
return _sys_version()[3]
def python_build():
@ -1150,7 +1346,7 @@ def python_build():
build number and date as strings.
"""
return _sys_version()[1:3]
return _sys_version()[4:6]
def python_compiler():
@ -1158,7 +1354,7 @@ def python_compiler():
Python.
"""
return _sys_version()[3]
return _sys_version()[6]
### The Opus Magnum of platform strings :-)
@ -1219,7 +1415,7 @@ def platform(aliased=0, terse=0):
elif system == 'Java':
# Java platforms
r,v,vminfo,(os_name,os_version,os_arch) = java_ver()
if terse:
if terse or not os_name:
platform = _platform(system,release,version)
else:
platform = _platform(system,release,version,