1254 lines
39 KiB
Python
Executable file
1254 lines
39 KiB
Python
Executable file
#!/usr/bin/env python
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""" This module tries to retrieve as much platform-identifying data as
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possible. It makes this information available via function APIs.
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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 useable 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 SourceForge Project Page and assign them to "lemburg".
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#
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# Note: Please keep this module compatible to Python 1.5.2.
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#
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# Still needed:
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# * more support for WinCE
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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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#
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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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#
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# Charles G Waldman, David Arnold, Gordon McMillan, Ben Darnell,
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# Jeff Bauer, Cliff Crawford, Ivan Van Laningham, Josef
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# Betancourt, Randall Hopper, Karl Putland, John Farrell, Greg
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# Andruk, Just van Rossum, Thomas Heller, Mark R. Levinson, Mark
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# Hammond, Bill Tutt, Hans Nowak, Uwe Zessin (OpenVMS support),
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# Colin Kong, Trent Mick, Guido van Rossum
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#
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# History:
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#
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# <see CVS and SVN checkin messages for history>
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#
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# 1.0.3 - added normalization of Windows system name
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# 1.0.2 - added more Windows support
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# 1.0.1 - reformatted to make doc.py happy
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# 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.)
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# 0.7.2 - fixed architecture() to use sizeof(pointer) where available
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# 0.7.1 - added support for Caldera OpenLinux
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# 0.7.0 - some fixes for WinCE; untabified the source file
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# 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 ;-)
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# 0.5.4 - fixed a few typos in the MacOS code
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# 0.5.3 - added experimental MacOS support; added better popen()
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# workarounds in _syscmd_ver() -- still not 100% elegant
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# 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 emtpy)
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# 0.5.1 - included code for slackware dist; added exception handlers
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# 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
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# 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
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# 0.3.4 - fixed a bug in _follow_symlinks()
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# 0.3.3 - fixed popen() and "file" command invokation bugs
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# 0.3.2 - added architecture() API and support for it in platform()
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# 0.3.1 - fixed syscmd_ver() RE to support Windows NT
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# 0.3.0 - added system alias support
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# 0.2.3 - removed 'wince' again... oh well.
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# 0.2.2 - added 'wince' to syscmd_ver() supported platforms
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# 0.2.1 - added cache logic and changed the platform string format
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# 0.2.0 - changed the API to use functions instead of module globals
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# since some action take too long to be run on module import
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# 0.1.0 - first release
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#
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# You can always get the latest version of this module at:
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#
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# http://www.egenix.com/files/python/platform.py
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#
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# If that URL should fail, try contacting the author.
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__copyright__ = """
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Copyright (c) 1999-2000, Marc-Andre Lemburg; mailto:mal@lemburg.com
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Copyright (c) 2000-2003, eGenix.com Software GmbH; mailto:info@egenix.com
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee or royalty is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation or portions thereof, including modifications,
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that you make.
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EGENIX.COM SOFTWARE GMBH DISCLAIMS ALL WARRANTIES WITH REGARD TO
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THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,
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INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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WITH THE USE OR PERFORMANCE OF THIS SOFTWARE !
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"""
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__version__ = '1.0.4'
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import sys,string,os,re
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### Platform specific APIs
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_libc_search = re.compile(r'(__libc_init)'
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'|'
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'(GLIBC_([0-9.]+))'
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'|'
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'(libc(_\w+)?\.so(?:\.(\d[0-9.]*))?)')
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def libc_ver(executable=sys.executable,lib='',version='',
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chunksize=2048):
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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 useable 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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f = open(executable,'rb')
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binary = f.read(chunksize)
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pos = 0
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while 1:
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m = _libc_search.search(binary,pos)
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if not m:
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binary = f.read(chunksize)
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if not binary:
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break
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pos = 0
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continue
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libcinit,glibc,glibcversion,so,threads,soversion = m.groups()
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if libcinit and not lib:
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lib = 'libc'
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elif glibc:
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if lib != 'glibc':
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lib = 'glibc'
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version = glibcversion
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elif glibcversion > version:
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version = glibcversion
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elif so:
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if lib != 'glibc':
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lib = 'libc'
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if soversion > version:
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version = soversion
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if threads and version[-len(threads):] != threads:
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version = version + threads
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pos = m.end()
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f.close()
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return lib,version
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def _dist_try_harder(distname,version,id):
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""" Tries some special tricks to get the distribution
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information in case the default method fails.
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Currently supports older SuSE Linux, Caldera OpenLinux and
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Slackware Linux distributions.
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"""
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if os.path.exists('/var/adm/inst-log/info'):
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# SuSE Linux stores distribution information in that file
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info = open('/var/adm/inst-log/info').readlines()
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distname = 'SuSE'
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for line in info:
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tv = string.split(line)
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if len(tv) == 2:
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tag,value = tv
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else:
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continue
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if tag == 'MIN_DIST_VERSION':
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version = string.strip(value)
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elif tag == 'DIST_IDENT':
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values = string.split(value,'-')
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id = values[2]
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return distname,version,id
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if os.path.exists('/etc/.installed'):
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# Caldera OpenLinux has some infos in that file (thanks to Colin Kong)
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info = open('/etc/.installed').readlines()
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for line in info:
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pkg = string.split(line,'-')
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if len(pkg) >= 2 and pkg[0] == 'OpenLinux':
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# XXX does Caldera support non Intel platforms ? If yes,
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# where can we find the needed id ?
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return 'OpenLinux',pkg[1],id
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if os.path.isdir('/usr/lib/setup'):
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# Check for slackware verson tag file (thanks to Greg Andruk)
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verfiles = os.listdir('/usr/lib/setup')
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for n in range(len(verfiles)-1, -1, -1):
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if verfiles[n][:14] != 'slack-version-':
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del verfiles[n]
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if verfiles:
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verfiles.sort()
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distname = 'slackware'
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version = verfiles[-1][14:]
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return distname,version,id
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return distname,version,id
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_release_filename = re.compile(r'(\w+)[-_](release|version)')
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_release_version = re.compile(r'([\d.]+)[^(]*(?:\((.+)\))?')
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# Note:In supported_dists below we need 'fedora' before 'redhat' as in
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# Fedora redhat-release is a link to fedora-release.
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def dist(distname='',version='',id='',
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supported_dists=('SuSE', 'debian', 'fedora', 'redhat', 'mandrake')):
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""" Tries to determine the name of the Linux OS distribution name.
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The function first looks for a distribution release file in
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/etc and then reverts to _dist_try_harder() in case no
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suitable files are found.
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Returns a tuple (distname,version,id) which default to the
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args given as parameters.
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"""
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try:
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etc = os.listdir('/etc')
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except os.error:
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# Probably not a Unix system
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return distname,version,id
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for file in etc:
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m = _release_filename.match(file)
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if m:
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_distname,dummy = m.groups()
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if _distname in supported_dists:
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distname = _distname
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break
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else:
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return _dist_try_harder(distname,version,id)
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f = open('/etc/'+file,'r')
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firstline = f.readline()
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f.close()
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m = _release_version.search(firstline)
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if m:
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_version,_id = m.groups()
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if _version:
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version = _version
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if _id:
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id = _id
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else:
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# Unkown format... take the first two words
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l = string.split(string.strip(firstline))
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if l:
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version = l[0]
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if len(l) > 1:
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id = l[1]
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return distname,version,id
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class _popen:
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""" Fairly portable (alternative) popen implementation.
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This is mostly needed in case os.popen() is not available, or
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doesn't work as advertised, e.g. in Win9X GUI programs like
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PythonWin or IDLE.
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Writing to the pipe is currently not supported.
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"""
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tmpfile = ''
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pipe = None
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bufsize = None
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mode = 'r'
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def __init__(self,cmd,mode='r',bufsize=None):
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if mode != 'r':
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raise ValueError,'popen()-emulation only supports read mode'
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import tempfile
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self.tmpfile = tmpfile = tempfile.mktemp()
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os.system(cmd + ' > %s' % tmpfile)
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self.pipe = open(tmpfile,'rb')
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self.bufsize = bufsize
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self.mode = mode
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def read(self):
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return self.pipe.read()
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def readlines(self):
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if self.bufsize is not None:
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return self.pipe.readlines()
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def close(self,
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remove=os.unlink,error=os.error):
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if self.pipe:
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rc = self.pipe.close()
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else:
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rc = 255
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if self.tmpfile:
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try:
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remove(self.tmpfile)
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except error:
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pass
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return rc
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# Alias
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__del__ = close
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def popen(cmd, mode='r', bufsize=None):
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""" Portable popen() interface.
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"""
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# Find a working popen implementation preferring win32pipe.popen
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# over os.popen over _popen
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popen = None
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if os.environ.get('OS','') == 'Windows_NT':
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# On NT win32pipe should work; on Win9x it hangs due to bugs
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# in the MS C lib (see MS KnowledgeBase article Q150956)
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try:
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import win32pipe
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except ImportError:
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pass
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else:
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popen = win32pipe.popen
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if popen is None:
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if hasattr(os,'popen'):
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popen = os.popen
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# Check whether it works... it doesn't in GUI programs
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# on Windows platforms
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if sys.platform == 'win32': # XXX Others too ?
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try:
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popen('')
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except os.error:
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popen = _popen
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else:
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popen = _popen
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if bufsize is None:
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return popen(cmd,mode)
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else:
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return popen(cmd,mode,bufsize)
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def _norm_version(version,build=''):
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""" Normalize the version and build strings and return a single
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version string using the format major.minor.build (or patchlevel).
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"""
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l = string.split(version,'.')
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if build:
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l.append(build)
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try:
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ints = map(int,l)
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except ValueError:
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strings = l
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else:
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strings = map(str,ints)
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version = string.join(strings[:3],'.')
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return version
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_ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) '
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'.*'
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'Version ([\d.]+))')
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def _syscmd_ver(system='',release='',version='',
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supported_platforms=('win32','win16','dos','os2')):
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""" Tries to figure out the OS version used and returns
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a tuple (system,release,version).
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It uses the "ver" shell command for this which is known
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to exists on Windows, DOS and OS/2. XXX Others too ?
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In case this fails, the given parameters are used as
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defaults.
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"""
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if sys.platform not in supported_platforms:
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return system,release,version
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# Try some common cmd strings
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for cmd in ('ver','command /c ver','cmd /c ver'):
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try:
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pipe = popen(cmd)
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info = pipe.read()
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if pipe.close():
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raise os.error,'command failed'
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# XXX How can I supress shell errors from being written
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# to stderr ?
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except os.error,why:
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#print 'Command %s failed: %s' % (cmd,why)
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continue
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except IOError,why:
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#print 'Command %s failed: %s' % (cmd,why)
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continue
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else:
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break
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else:
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return system,release,version
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# Parse the output
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info = string.strip(info)
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m = _ver_output.match(info)
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if m:
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system,release,version = m.groups()
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# Strip trailing dots from version and release
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if release[-1] == '.':
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release = release[:-1]
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|
if version[-1] == '.':
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version = version[:-1]
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# Normalize the version and build strings (eliminating additional
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# zeros)
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version = _norm_version(version)
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return system,release,version
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|
def _win32_getvalue(key,name,default=''):
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""" Read a value for name from the registry key.
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|
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In case this fails, default is returned.
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"""
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from win32api import RegQueryValueEx
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try:
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return RegQueryValueEx(key,name)
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except:
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return default
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|
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def win32_ver(release='',version='',csd='',ptype=''):
|
|
|
|
""" Get additional version information from the Windows Registry
|
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and return a tuple (version,csd,ptype) referring to version
|
|
number, CSD level and OS type (multi/single
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processor).
|
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As a hint: ptype returns 'Uniprocessor Free' on single
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processor NT machines and 'Multiprocessor Free' on multi
|
|
processor machines. The 'Free' refers to the OS version being
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|
free of debugging code. It could also state 'Checked' which
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|
means the OS version uses debugging code, i.e. code that
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checks arguments, ranges, etc. (Thomas Heller).
|
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Note: this function only works if Mark Hammond's win32
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package is installed and obviously only runs on Win32
|
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compatible platforms.
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"""
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|
# XXX Is there any way to find out the processor type on WinXX ?
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|
# XXX Is win32 available on Windows CE ?
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|
#
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|
# Adapted from code posted by Karl Putland to comp.lang.python.
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|
#
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|
# The mappings between reg. values and release names can be found
|
|
# here: http://msdn.microsoft.com/library/en-us/sysinfo/base/osversioninfo_str.asp
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|
|
# Import the needed APIs
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|
try:
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import win32api
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|
except ImportError:
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|
return release,version,csd,ptype
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from win32api import RegQueryValueEx,RegOpenKeyEx,RegCloseKey,GetVersionEx
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|
from win32con import HKEY_LOCAL_MACHINE,VER_PLATFORM_WIN32_NT,\
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VER_PLATFORM_WIN32_WINDOWS
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# Find out the registry key and some general version infos
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maj,min,buildno,plat,csd = GetVersionEx()
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version = '%i.%i.%i' % (maj,min,buildno & 0xFFFF)
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if csd[:13] == 'Service Pack ':
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csd = 'SP' + csd[13:]
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if plat == VER_PLATFORM_WIN32_WINDOWS:
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regkey = 'SOFTWARE\\Microsoft\\Windows\\CurrentVersion'
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# Try to guess the release name
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|
if maj == 4:
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if min == 0:
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release = '95'
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elif min == 10:
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release = '98'
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elif min == 90:
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release = 'Me'
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else:
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release = 'postMe'
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elif maj == 5:
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release = '2000'
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elif plat == VER_PLATFORM_WIN32_NT:
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regkey = 'SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion'
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if maj <= 4:
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release = 'NT'
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elif maj == 5:
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if min == 0:
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release = '2000'
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elif min == 1:
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release = 'XP'
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elif min == 2:
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release = '2003Server'
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else:
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release = 'post2003'
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else:
|
|
if not release:
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|
# E.g. Win3.1 with win32s
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|
release = '%i.%i' % (maj,min)
|
|
return release,version,csd,ptype
|
|
|
|
# Open the registry key
|
|
try:
|
|
keyCurVer = RegOpenKeyEx(HKEY_LOCAL_MACHINE,regkey)
|
|
# Get a value to make sure the key exists...
|
|
RegQueryValueEx(keyCurVer,'SystemRoot')
|
|
except:
|
|
return release,version,csd,ptype
|
|
|
|
# Parse values
|
|
#subversion = _win32_getvalue(keyCurVer,
|
|
# 'SubVersionNumber',
|
|
# ('',1))[0]
|
|
#if subversion:
|
|
# release = release + subversion # 95a, 95b, etc.
|
|
build = _win32_getvalue(keyCurVer,
|
|
'CurrentBuildNumber',
|
|
('',1))[0]
|
|
ptype = _win32_getvalue(keyCurVer,
|
|
'CurrentType',
|
|
(ptype,1))[0]
|
|
|
|
# Normalize version
|
|
version = _norm_version(version,build)
|
|
|
|
# Close key
|
|
RegCloseKey(keyCurVer)
|
|
return release,version,csd,ptype
|
|
|
|
def _mac_ver_lookup(selectors,default=None):
|
|
|
|
from gestalt import gestalt
|
|
import MacOS
|
|
l = []
|
|
append = l.append
|
|
for selector in selectors:
|
|
try:
|
|
append(gestalt(selector))
|
|
except (RuntimeError, MacOS.Error):
|
|
append(default)
|
|
return l
|
|
|
|
def _bcd2str(bcd):
|
|
|
|
return hex(bcd)[2:]
|
|
|
|
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 paramter values
|
|
which default to ''. All tuple entries are strings.
|
|
|
|
Thanks to Mark R. Levinson for mailing documentation links and
|
|
code examples for this function. Documentation for the
|
|
gestalt() API is available online at:
|
|
|
|
http://www.rgaros.nl/gestalt/
|
|
|
|
"""
|
|
# Check whether the version info module is available
|
|
try:
|
|
import gestalt
|
|
import MacOS
|
|
except ImportError:
|
|
return release,versioninfo,machine
|
|
# Get the infos
|
|
sysv,sysu,sysa = _mac_ver_lookup(('sysv','sysu','sysa'))
|
|
# Decode the infos
|
|
if sysv:
|
|
major = (sysv & 0xFF00) >> 8
|
|
minor = (sysv & 0x00F0) >> 4
|
|
patch = (sysv & 0x000F)
|
|
release = '%s.%i.%i' % (_bcd2str(major),minor,patch)
|
|
if sysu:
|
|
major = int((sysu & 0xFF000000L) >> 24)
|
|
minor = (sysu & 0x00F00000) >> 20
|
|
bugfix = (sysu & 0x000F0000) >> 16
|
|
stage = (sysu & 0x0000FF00) >> 8
|
|
nonrel = (sysu & 0x000000FF)
|
|
version = '%s.%i.%i' % (_bcd2str(major),minor,bugfix)
|
|
nonrel = _bcd2str(nonrel)
|
|
stage = {0x20:'development',
|
|
0x40:'alpha',
|
|
0x60:'beta',
|
|
0x80:'final'}.get(stage,'')
|
|
versioninfo = (version,stage,nonrel)
|
|
if sysa:
|
|
machine = {0x1: '68k',
|
|
0x2: 'PowerPC',
|
|
0xa: 'i386'}.get(sysa,'')
|
|
return release,versioninfo,machine
|
|
|
|
def _java_getprop(name,default):
|
|
|
|
from java.lang import System
|
|
try:
|
|
return System.getProperty(name)
|
|
except:
|
|
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 the needed APIs
|
|
try:
|
|
import java.lang
|
|
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
|
|
|
|
### 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 == 'Rhapsody':
|
|
# Apple's BSD derivative
|
|
# XXX How can we determine the marketing release number ?
|
|
return 'MacOS X Server',system+release,version
|
|
|
|
elif 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 = string.split(release,'.')
|
|
if l:
|
|
try:
|
|
major = int(l[0])
|
|
except ValueError:
|
|
pass
|
|
else:
|
|
major = major - 3
|
|
l[0] = str(major)
|
|
release = string.join(l,'.')
|
|
if release < '6':
|
|
system = 'Solaris'
|
|
else:
|
|
# XXX Whatever the new SunOS marketing name is...
|
|
system = 'Solaris'
|
|
|
|
elif system == 'IRIX64':
|
|
# IRIX reports IRIX64 on platforms with 64-bit support; yet it
|
|
# is really a version and not a different platform, since 32-bit
|
|
# apps are also supported..
|
|
system = 'IRIX'
|
|
if version:
|
|
version = version + ' (64bit)'
|
|
else:
|
|
version = '64bit'
|
|
|
|
elif system in ('win32','win16'):
|
|
# In case one of the other tricks
|
|
system = 'Windows'
|
|
|
|
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 = string.join(
|
|
map(string.strip,
|
|
filter(len,args)),
|
|
'-')
|
|
|
|
# Cleanup some possible filename obstacles...
|
|
replace = string.replace
|
|
platform = replace(platform,' ','_')
|
|
platform = replace(platform,'/','-')
|
|
platform = replace(platform,'\\','-')
|
|
platform = replace(platform,':','-')
|
|
platform = replace(platform,';','-')
|
|
platform = replace(platform,'"','-')
|
|
platform = replace(platform,'(','-')
|
|
platform = replace(platform,')','-')
|
|
|
|
# No need to report 'unknown' information...
|
|
platform = replace(platform,'unknown','')
|
|
|
|
# Fold '--'s and remove trailing '-'
|
|
while 1:
|
|
cleaned = replace(platform,'--','-')
|
|
if cleaned == platform:
|
|
break
|
|
platform = cleaned
|
|
while 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 socket.error:
|
|
# Still not working...
|
|
return default
|
|
|
|
# os.path.abspath is new in Python 1.5.2:
|
|
if not hasattr(os.path,'abspath'):
|
|
|
|
def _abspath(path,
|
|
|
|
isabs=os.path.isabs,join=os.path.join,getcwd=os.getcwd,
|
|
normpath=os.path.normpath):
|
|
|
|
if not isabs(path):
|
|
path = join(getcwd(), path)
|
|
return normpath(path)
|
|
|
|
else:
|
|
|
|
_abspath = os.path.abspath
|
|
|
|
def _follow_symlinks(filepath):
|
|
|
|
""" In case filepath is a symlink, follow it until a
|
|
real file is reached.
|
|
"""
|
|
filepath = _abspath(filepath)
|
|
while os.path.islink(filepath):
|
|
filepath = os.path.normpath(
|
|
os.path.join(filepath,os.readlink(filepath)))
|
|
return filepath
|
|
|
|
def _syscmd_uname(option,default=''):
|
|
|
|
""" Interface to the system's uname command.
|
|
"""
|
|
if sys.platform in ('dos','win32','win16','os2'):
|
|
# XXX Others too ?
|
|
return default
|
|
try:
|
|
f = os.popen('uname %s 2> /dev/null' % option)
|
|
except (AttributeError,os.error):
|
|
return default
|
|
output = string.strip(f.read())
|
|
rc = f.close()
|
|
if not output or rc:
|
|
return default
|
|
else:
|
|
return output
|
|
|
|
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
|
|
ommit the filename in its output and if possible the -L option
|
|
to have the command follow symlinks. It returns default in
|
|
case the command should fail.
|
|
|
|
"""
|
|
target = _follow_symlinks(target)
|
|
try:
|
|
f = os.popen('file %s 2> /dev/null' % target)
|
|
except (AttributeError,os.error):
|
|
return default
|
|
output = string.strip(f.read())
|
|
rc = f.close()
|
|
if not output or rc:
|
|
return default
|
|
else:
|
|
return output
|
|
|
|
### 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'),
|
|
}
|
|
|
|
_architecture_split = re.compile(r'[\s,]').split
|
|
|
|
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
|
|
try:
|
|
size = struct.calcsize('P')
|
|
except struct.error:
|
|
# Older installations can only query longs
|
|
size = struct.calcsize('l')
|
|
bits = str(size*8) + 'bit'
|
|
|
|
# Get data from the 'file' system command
|
|
output = _syscmd_file(executable,'')
|
|
|
|
if not output and \
|
|
executable == sys.executable:
|
|
# "file" command did not return anything; we'll try to provide
|
|
# some sensible defaults then...
|
|
if _default_architecture.has_key(sys.platform):
|
|
b,l = _default_architecture[sys.platform]
|
|
if b:
|
|
bits = b
|
|
if l:
|
|
linkage = l
|
|
return bits,linkage
|
|
|
|
# Split the output into a list of strings omitting the filename
|
|
fileout = _architecture_split(output)[1:]
|
|
|
|
if 'executable' not in fileout:
|
|
# Format not supported
|
|
return bits,linkage
|
|
|
|
# Bits
|
|
if '32-bit' in fileout:
|
|
bits = '32bit'
|
|
elif 'N32' in fileout:
|
|
# On Irix only
|
|
bits = 'n32bit'
|
|
elif '64-bit' in fileout:
|
|
bits = '64bit'
|
|
|
|
# Linkage
|
|
if 'ELF' in fileout:
|
|
linkage = 'ELF'
|
|
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
|
|
|
|
### Portable uname() interface
|
|
|
|
_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 = os.uname()
|
|
|
|
except AttributeError:
|
|
# Hmm, no uname... we'll have to poke around the system then.
|
|
system = sys.platform
|
|
release = ''
|
|
version = ''
|
|
node = _node()
|
|
machine = ''
|
|
processor = ''
|
|
use_syscmd_ver = 1
|
|
|
|
# Try win32_ver() on win32 platforms
|
|
if system == 'win32':
|
|
release,version,csd,ptype = win32_ver()
|
|
if release and version:
|
|
use_syscmd_ver = 0
|
|
|
|
# Try the 'ver' system command available on some
|
|
# platforms
|
|
if use_syscmd_ver:
|
|
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'
|
|
|
|
# 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 = string.join(vminfo,', ')
|
|
if not version:
|
|
version = vendor
|
|
|
|
elif os.name == 'mac':
|
|
release,(version,stage,nonrel),machine = mac_ver()
|
|
system = 'MacOS'
|
|
|
|
else:
|
|
# System specific extensions
|
|
if system == 'OpenVMS':
|
|
# OpenVMS seems to have release and version mixed up
|
|
if not release or release == '0':
|
|
release = version
|
|
version = ''
|
|
# Get processor information
|
|
try:
|
|
import vms_lib
|
|
except ImportError:
|
|
pass
|
|
else:
|
|
csid, cpu_number = vms_lib.getsyi('SYI$_CPU',0)
|
|
if (cpu_number >= 128):
|
|
processor = 'Alpha'
|
|
else:
|
|
processor = 'VAX'
|
|
else:
|
|
# Get processor information from the uname system command
|
|
processor = _syscmd_uname('-p','')
|
|
|
|
# 'unknown' is not really any useful as information; we'll convert
|
|
# it to '' which is more portable
|
|
if system == 'unknown':
|
|
system = ''
|
|
if node == 'unknown':
|
|
node = ''
|
|
if release == 'unknown':
|
|
release = ''
|
|
if version == 'unknown':
|
|
version = ''
|
|
if machine == 'unknown':
|
|
machine = ''
|
|
if processor == 'unknown':
|
|
processor = ''
|
|
_uname_cache = system,node,release,version,machine,processor
|
|
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()[0]
|
|
|
|
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()[1]
|
|
|
|
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()[2]
|
|
|
|
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()[3]
|
|
|
|
def machine():
|
|
|
|
""" Returns the machine type, e.g. 'i386'
|
|
|
|
An empty string is returned if the value cannot be determined.
|
|
|
|
"""
|
|
return uname()[4]
|
|
|
|
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()[5]
|
|
|
|
### Various APIs for extracting information from sys.version
|
|
|
|
_sys_version_parser = re.compile(r'([\w.+]+)\s*'
|
|
'\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'
|
|
'\[([^\]]+)\]?')
|
|
_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.
|
|
|
|
Note that unlike the Python sys.version, the returned value
|
|
for the Python version will always include the patchlevel (it
|
|
defaults to '.0').
|
|
|
|
"""
|
|
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
|
|
l = string.split(version, '.')
|
|
if len(l) == 2:
|
|
l.append('0')
|
|
version = string.join(l, '.')
|
|
_sys_version_cache = (version, buildno, builddate, compiler)
|
|
return _sys_version_cache
|
|
|
|
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()[0]
|
|
|
|
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 string.split(_sys_version()[0], '.')
|
|
|
|
def python_build():
|
|
|
|
""" Returns a tuple (buildno, builddate) stating the Python
|
|
build number and date as strings.
|
|
|
|
"""
|
|
return _sys_version()[1:3]
|
|
|
|
def python_compiler():
|
|
|
|
""" Returns a string identifying the compiler used for compiling
|
|
Python.
|
|
|
|
"""
|
|
return _sys_version()[3]
|
|
|
|
### The Opus Magnum of platform strings :-)
|
|
|
|
_platform_cache = {}
|
|
|
|
def platform(aliased=0, terse=0):
|
|
|
|
""" 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 == '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 in ('Linux',):
|
|
# Linux based systems
|
|
distname,distversion,distid = dist('')
|
|
if distname and not terse:
|
|
platform = _platform(system,release,machine,processor,
|
|
'with',
|
|
distname,distversion,distid)
|
|
else:
|
|
# If the distribution name is unknown check for libc vs. glibc
|
|
libcname,libcversion = libc_ver(sys.executable)
|
|
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:
|
|
platform = _platform(system,release,version)
|
|
else:
|
|
platform = _platform(system,release,version,
|
|
'on',
|
|
os_name,os_version,os_arch)
|
|
|
|
elif system == 'MacOS':
|
|
# MacOS platforms
|
|
if terse:
|
|
platform = _platform(system,release)
|
|
else:
|
|
platform = _platform(system,release,machine)
|
|
|
|
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
|
|
|
|
### 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)
|