| #!/usr/bin/env python |
| |
| """ This module tries to retrieve as much platform-identifying data as |
| possible. It makes this information available via function APIs. |
| |
| If called from the command line, it prints the platform |
| information concatenated as single string to stdout. The output |
| format is useable as part of a filename. |
| |
| """ |
| # This module is maintained by Marc-Andre Lemburg <mal@egenix.com>. |
| # If you find problems, please submit bug reports/patches via the |
| # Python SourceForge Project Page and assign them to "lemburg". |
| # |
| # Note: Please keep this module compatible to Python 1.5.2. |
| # |
| # Still needed: |
| # * more support for WinCE |
| # * support for MS-DOS (PythonDX ?) |
| # * support for Amiga and other still unsupported platforms running Python |
| # * support for additional Linux distributions |
| # |
| # Many thanks to all those who helped adding platform-specific |
| # checks (in no particular order): |
| # |
| # 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 |
| # |
| # History: |
| # |
| # <see CVS and SVN checkin messages for history> |
| # |
| # 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 |
| # 1.0.0 - reformatted a bit and checked into Python CVS |
| # 0.8.0 - added sys.version parser and various new access |
| # APIs (python_version(), python_compiler(), etc.) |
| # 0.7.2 - fixed architecture() to use sizeof(pointer) where available |
| # 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 |
| # vms_lib.getsyi() configured |
| # 0.6.1 - added code to prevent 'uname -p' on platforms which are |
| # known not to support it |
| # 0.6.0 - fixed win32_ver() to hopefully work on Win95,98,NT and Win2k; |
| # did some cleanup of the interfaces - some APIs have changed |
| # 0.5.5 - fixed another type in the MacOS code... should have |
| # 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 |
| # 0.5.2 - fixed uname() to return '' instead of 'unknown' in all |
| # return values (the system uname command tends to return |
| # 'unknown' instead of just leaving the field emtpy) |
| # 0.5.1 - included code for slackware dist; added exception handlers |
| # to cover up situations where platforms don't have os.popen |
| # (e.g. Mac) or fail on socket.gethostname(); fixed libc |
| # detection RE |
| # 0.5.0 - changed the API names referring to system commands to *syscmd*; |
| # added java_ver(); made syscmd_ver() a private |
| # API (was system_ver() in previous versions) -- use uname() |
| # instead; extended the win32_ver() to also return processor |
| # type information |
| # 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 invokation 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__ = """ |
| Copyright (c) 1999-2000, Marc-Andre Lemburg; mailto:mal@lemburg.com |
| Copyright (c) 2000-2003, 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__ = '1.0.4' |
| |
| import sys,string,os,re |
| |
| ### Platform specific APIs |
| |
| _libc_search = re.compile(r'(__libc_init)' |
| '|' |
| '(GLIBC_([0-9.]+))' |
| '|' |
| '(libc(_\w+)?\.so(?:\.(\d[0-9.]*))?)') |
| |
| def libc_ver(executable=sys.executable,lib='',version='', |
| |
| chunksize=2048): |
| |
| """ Tries to determine the libc version that the file executable |
| (which defaults to the Python interpreter) is linked against. |
| |
| Returns a tuple of strings (lib,version) which default to the |
| given parameters in case the lookup fails. |
| |
| Note that the function has intimate knowledge of how different |
| libc versions add symbols to the executable and thus is probably |
| only useable for executables compiled using gcc. |
| |
| The file is read and scanned in chunks of chunksize bytes. |
| |
| """ |
| f = open(executable,'rb') |
| binary = f.read(chunksize) |
| pos = 0 |
| while 1: |
| m = _libc_search.search(binary,pos) |
| if not m: |
| binary = f.read(chunksize) |
| if not binary: |
| break |
| pos = 0 |
| continue |
| libcinit,glibc,glibcversion,so,threads,soversion = m.groups() |
| if libcinit and not lib: |
| lib = 'libc' |
| elif glibc: |
| if lib != 'glibc': |
| lib = 'glibc' |
| version = glibcversion |
| elif glibcversion > version: |
| version = glibcversion |
| elif so: |
| if lib != 'glibc': |
| lib = 'libc' |
| if soversion > version: |
| version = soversion |
| if threads and version[-len(threads):] != threads: |
| version = version + threads |
| pos = m.end() |
| f.close() |
| return lib,version |
| |
| def _dist_try_harder(distname,version,id): |
| |
| """ Tries some special tricks to get the distribution |
| information in case the default method fails. |
| |
| Currently supports older SuSE Linux, Caldera OpenLinux and |
| Slackware Linux distributions. |
| |
| """ |
| if os.path.exists('/var/adm/inst-log/info'): |
| # SuSE Linux stores distribution information in that file |
| info = open('/var/adm/inst-log/info').readlines() |
| distname = 'SuSE' |
| for line in info: |
| tv = string.split(line) |
| if len(tv) == 2: |
| tag,value = tv |
| else: |
| continue |
| if tag == 'MIN_DIST_VERSION': |
| version = string.strip(value) |
| elif tag == 'DIST_IDENT': |
| values = string.split(value,'-') |
| id = values[2] |
| return distname,version,id |
| |
| if os.path.exists('/etc/.installed'): |
| # Caldera OpenLinux has some infos in that file (thanks to Colin Kong) |
| info = open('/etc/.installed').readlines() |
| for line in info: |
| pkg = string.split(line,'-') |
| if len(pkg) >= 2 and pkg[0] == 'OpenLinux': |
| # XXX does Caldera support non Intel platforms ? If yes, |
| # where can we find the needed id ? |
| return 'OpenLinux',pkg[1],id |
| |
| if os.path.isdir('/usr/lib/setup'): |
| # Check for slackware verson tag file (thanks to Greg Andruk) |
| verfiles = os.listdir('/usr/lib/setup') |
| for n in range(len(verfiles)-1, -1, -1): |
| if verfiles[n][:14] != 'slack-version-': |
| del verfiles[n] |
| if verfiles: |
| verfiles.sort() |
| distname = 'slackware' |
| version = verfiles[-1][14:] |
| return distname,version,id |
| |
| return distname,version,id |
| |
| _release_filename = re.compile(r'(\w+)[-_](release|version)') |
| _release_version = re.compile(r'([\d.]+)[^(]*(?:\((.+)\))?') |
| |
| # Note:In supported_dists below we need 'fedora' before 'redhat' as in |
| # Fedora redhat-release is a link to fedora-release. |
| |
| def dist(distname='',version='',id='', |
| |
| supported_dists=('SuSE', 'debian', 'fedora', 'redhat', 'mandrake')): |
| |
| """ 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. |
| |
| 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 |
| 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 |
| |
| class _popen: |
| |
| """ Fairly portable (alternative) popen implementation. |
| |
| This is mostly needed in case os.popen() is not available, or |
| doesn't work as advertised, e.g. in Win9X GUI programs like |
| PythonWin or IDLE. |
| |
| Writing to the pipe is currently not supported. |
| |
| """ |
| tmpfile = '' |
| pipe = None |
| bufsize = None |
| mode = 'r' |
| |
| def __init__(self,cmd,mode='r',bufsize=None): |
| |
| if mode != 'r': |
| raise ValueError,'popen()-emulation only supports read mode' |
| import tempfile |
| self.tmpfile = tmpfile = tempfile.mktemp() |
| os.system(cmd + ' > %s' % tmpfile) |
| self.pipe = open(tmpfile,'rb') |
| self.bufsize = bufsize |
| self.mode = mode |
| |
| def read(self): |
| |
| return self.pipe.read() |
| |
| def readlines(self): |
| |
| if self.bufsize is not None: |
| return self.pipe.readlines() |
| |
| def close(self, |
| |
| remove=os.unlink,error=os.error): |
| |
| if self.pipe: |
| rc = self.pipe.close() |
| else: |
| rc = 255 |
| if self.tmpfile: |
| try: |
| remove(self.tmpfile) |
| except error: |
| pass |
| return rc |
| |
| # Alias |
| __del__ = close |
| |
| def popen(cmd, mode='r', bufsize=None): |
| |
| """ Portable popen() interface. |
| """ |
| # Find a working popen implementation preferring win32pipe.popen |
| # over os.popen over _popen |
| popen = None |
| if os.environ.get('OS','') == 'Windows_NT': |
| # On NT win32pipe should work; on Win9x it hangs due to bugs |
| # in the MS C lib (see MS KnowledgeBase article Q150956) |
| try: |
| import win32pipe |
| except ImportError: |
| pass |
| else: |
| popen = win32pipe.popen |
| if popen is None: |
| if hasattr(os,'popen'): |
| popen = os.popen |
| # Check whether it works... it doesn't in GUI programs |
| # on Windows platforms |
| if sys.platform == 'win32': # XXX Others too ? |
| try: |
| popen('') |
| except os.error: |
| popen = _popen |
| else: |
| popen = _popen |
| if bufsize is None: |
| return popen(cmd,mode) |
| else: |
| return popen(cmd,mode,bufsize) |
| |
| 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). |
| """ |
| l = string.split(version,'.') |
| if build: |
| l.append(build) |
| try: |
| ints = map(int,l) |
| except ValueError: |
| strings = l |
| else: |
| strings = map(str,ints) |
| version = string.join(strings[:3],'.') |
| return version |
| |
| _ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) ' |
| '.*' |
| 'Version ([\d.]+))') |
| |
| def _syscmd_ver(system='',release='',version='', |
| |
| supported_platforms=('win32','win16','dos','os2')): |
| |
| """ 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 and OS/2. 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 |
| for cmd in ('ver','command /c ver','cmd /c ver'): |
| try: |
| pipe = popen(cmd) |
| info = pipe.read() |
| if pipe.close(): |
| raise os.error,'command failed' |
| # XXX How can I supress shell errors from being written |
| # to stderr ? |
| except os.error,why: |
| #print 'Command %s failed: %s' % (cmd,why) |
| continue |
| except IOError,why: |
| #print 'Command %s failed: %s' % (cmd,why) |
| continue |
| else: |
| break |
| else: |
| return system,release,version |
| |
| # Parse the output |
| info = string.strip(info) |
| m = _ver_output.match(info) |
| if m: |
| 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 _win32_getvalue(key,name,default=''): |
| |
| """ Read a value for name from the registry key. |
| |
| In case this fails, default is returned. |
| |
| """ |
| from win32api import RegQueryValueEx |
| try: |
| return RegQueryValueEx(key,name) |
| except: |
| return default |
| |
| def win32_ver(release='',version='',csd='',ptype=''): |
| |
| """ Get additional version information from the Windows Registry |
| and return a tuple (version,csd,ptype) referring to version |
| number, CSD level and OS type (multi/single |
| processor). |
| |
| As a hint: ptype returns 'Uniprocessor Free' on single |
| processor NT machines and 'Multiprocessor Free' on multi |
| processor machines. The 'Free' refers to the OS version being |
| free of debugging code. It could also state 'Checked' which |
| means the OS version uses debugging code, i.e. code that |
| checks arguments, ranges, etc. (Thomas Heller). |
| |
| Note: this function only works if Mark Hammond's win32 |
| package is installed and obviously only runs on Win32 |
| compatible platforms. |
| |
| """ |
| # XXX Is there any way to find out the processor type on WinXX ? |
| # XXX Is win32 available on Windows CE ? |
| # |
| # Adapted from code posted by Karl Putland to comp.lang.python. |
| # |
| # The mappings between reg. values and release names can be found |
| # here: http://msdn.microsoft.com/library/en-us/sysinfo/base/osversioninfo_str.asp |
| |
| # Import the needed APIs |
| try: |
| import win32api |
| except ImportError: |
| return release,version,csd,ptype |
| from win32api import RegQueryValueEx,RegOpenKeyEx,RegCloseKey,GetVersionEx |
| from win32con import HKEY_LOCAL_MACHINE,VER_PLATFORM_WIN32_NT,\ |
| VER_PLATFORM_WIN32_WINDOWS |
| |
| # Find out the registry key and some general version infos |
| maj,min,buildno,plat,csd = GetVersionEx() |
| version = '%i.%i.%i' % (maj,min,buildno & 0xFFFF) |
| if csd[:13] == 'Service Pack ': |
| csd = 'SP' + csd[13:] |
| if plat == VER_PLATFORM_WIN32_WINDOWS: |
| regkey = 'SOFTWARE\\Microsoft\\Windows\\CurrentVersion' |
| # Try to guess the release name |
| if maj == 4: |
| if min == 0: |
| release = '95' |
| elif min == 10: |
| release = '98' |
| elif min == 90: |
| release = 'Me' |
| else: |
| release = 'postMe' |
| elif maj == 5: |
| release = '2000' |
| elif plat == VER_PLATFORM_WIN32_NT: |
| regkey = 'SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion' |
| if maj <= 4: |
| release = 'NT' |
| elif maj == 5: |
| if min == 0: |
| release = '2000' |
| elif min == 1: |
| release = 'XP' |
| elif min == 2: |
| release = '2003Server' |
| else: |
| release = 'post2003' |
| else: |
| if not release: |
| # E.g. Win3.1 with win32s |
| 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) |
| |
| if (major, minor) >= (10, 4): |
| # the 'sysv' gestald cannot return patchlevels |
| # higher than 9. Apple introduced 3 new |
| # gestalt codes in 10.4 to deal with this |
| # issue (needed because patch levels can |
| # run higher than 9, such as 10.4.11) |
| major,minor,patch = _mac_ver_lookup(('sys1','sys2','sys3')) |
| release = '%i.%i.%i' %(major, minor, patch) |
| else: |
| 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 |
| from org.python.core.Py import newString |
| try: |
| return newString(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('os.arch',os_arch) |
| os_name = _java_getprop('os.name',os_name) |
| os_version = _java_getprop('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(os.path.dirname(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 = '' |
| |
| # normalize name |
| if system == 'Microsoft' and release == 'Windows': |
| system = 'Windows' |
| release = 'Vista' |
| |
| _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) |
