EmbeddedPkg: Extend NvVarStoreFormattedLib LIBRARY_CLASS

[mirror_edk2.git] / AppPkg / Applications / Python / Python-2.7.2 / Lib / platform.py

#!/usr/bin/env python\r
\r
""" This module tries to retrieve as much platform-identifying data as\r
    possible. It makes this information available via function APIs.\r
\r
    If called from the command line, it prints the platform\r
    information concatenated as single string to stdout. The output\r
    format is useable as part of a filename.\r
\r
"""\r
#    This module is maintained by Marc-Andre Lemburg <mal@egenix.com>.\r
#    If you find problems, please submit bug reports/patches via the\r
#    Python bug tracker (http://bugs.python.org) and assign them to "lemburg".\r
#\r
#    Note: Please keep this module compatible to Python 1.5.2.\r
#\r
#    Still needed:\r
#    * more support for WinCE\r
#    * support for MS-DOS (PythonDX ?)\r
#    * support for Amiga and other still unsupported platforms running Python\r
#    * support for additional Linux distributions\r
#\r
#    Many thanks to all those who helped adding platform-specific\r
#    checks (in no particular order):\r
#\r
#      Charles G Waldman, David Arnold, Gordon McMillan, Ben Darnell,\r
#      Jeff Bauer, Cliff Crawford, Ivan Van Laningham, Josef\r
#      Betancourt, Randall Hopper, Karl Putland, John Farrell, Greg\r
#      Andruk, Just van Rossum, Thomas Heller, Mark R. Levinson, Mark\r
#      Hammond, Bill Tutt, Hans Nowak, Uwe Zessin (OpenVMS support),\r
#      Colin Kong, Trent Mick, Guido van Rossum, Anthony Baxter\r
#\r
#    History:\r
#\r
#    <see CVS and SVN checkin messages for history>\r
#\r
#    1.0.7 - added DEV_NULL\r
#    1.0.6 - added linux_distribution()\r
#    1.0.5 - fixed Java support to allow running the module on Jython\r
#    1.0.4 - added IronPython support\r
#    1.0.3 - added normalization of Windows system name\r
#    1.0.2 - added more Windows support\r
#    1.0.1 - reformatted to make doc.py happy\r
#    1.0.0 - reformatted a bit and checked into Python CVS\r
#    0.8.0 - added sys.version parser and various new access\r
#            APIs (python_version(), python_compiler(), etc.)\r
#    0.7.2 - fixed architecture() to use sizeof(pointer) where available\r
#    0.7.1 - added support for Caldera OpenLinux\r
#    0.7.0 - some fixes for WinCE; untabified the source file\r
#    0.6.2 - support for OpenVMS - requires version 1.5.2-V006 or higher and\r
#            vms_lib.getsyi() configured\r
#    0.6.1 - added code to prevent 'uname -p' on platforms which are\r
#            known not to support it\r
#    0.6.0 - fixed win32_ver() to hopefully work on Win95,98,NT and Win2k;\r
#            did some cleanup of the interfaces - some APIs have changed\r
#    0.5.5 - fixed another type in the MacOS code... should have\r
#            used more coffee today ;-)\r
#    0.5.4 - fixed a few typos in the MacOS code\r
#    0.5.3 - added experimental MacOS support; added better popen()\r
#            workarounds in _syscmd_ver() -- still not 100% elegant\r
#            though\r
#    0.5.2 - fixed uname() to return '' instead of 'unknown' in all\r
#            return values (the system uname command tends to return\r
#            'unknown' instead of just leaving the field emtpy)\r
#    0.5.1 - included code for slackware dist; added exception handlers\r
#            to cover up situations where platforms don't have os.popen\r
#            (e.g. Mac) or fail on socket.gethostname(); fixed libc\r
#            detection RE\r
#    0.5.0 - changed the API names referring to system commands to *syscmd*;\r
#            added java_ver(); made syscmd_ver() a private\r
#            API (was system_ver() in previous versions) -- use uname()\r
#            instead; extended the win32_ver() to also return processor\r
#            type information\r
#    0.4.0 - added win32_ver() and modified the platform() output for WinXX\r
#    0.3.4 - fixed a bug in _follow_symlinks()\r
#    0.3.3 - fixed popen() and "file" command invokation bugs\r
#    0.3.2 - added architecture() API and support for it in platform()\r
#    0.3.1 - fixed syscmd_ver() RE to support Windows NT\r
#    0.3.0 - added system alias support\r
#    0.2.3 - removed 'wince' again... oh well.\r
#    0.2.2 - added 'wince' to syscmd_ver() supported platforms\r
#    0.2.1 - added cache logic and changed the platform string format\r
#    0.2.0 - changed the API to use functions instead of module globals\r
#            since some action take too long to be run on module import\r
#    0.1.0 - first release\r
#\r
#    You can always get the latest version of this module at:\r
#\r
#             http://www.egenix.com/files/python/platform.py\r
#\r
#    If that URL should fail, try contacting the author.\r
\r
__copyright__ = """\r
    Copyright (c) 1999-2000, Marc-Andre Lemburg; mailto:mal@lemburg.com\r
    Copyright (c) 2000-2010, eGenix.com Software GmbH; mailto:info@egenix.com\r
\r
    Permission to use, copy, modify, and distribute this software and its\r
    documentation for any purpose and without fee or royalty is hereby granted,\r
    provided that the above copyright notice appear in all copies and that\r
    both that copyright notice and this permission notice appear in\r
    supporting documentation or portions thereof, including modifications,\r
    that you make.\r
\r
    EGENIX.COM SOFTWARE GMBH DISCLAIMS ALL WARRANTIES WITH REGARD TO\r
    THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND\r
    FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,\r
    INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING\r
    FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,\r
    NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION\r
    WITH THE USE OR PERFORMANCE OF THIS SOFTWARE !\r
\r
"""\r
\r
__version__ = '1.0.7'\r
\r
import sys,string,os,re\r
\r
### Globals & Constants\r
\r
# Determine the platform's /dev/null device\r
try:\r
    DEV_NULL = os.devnull\r
except AttributeError:\r
    # os.devnull was added in Python 2.4, so emulate it for earlier\r
    # Python versions\r
    if sys.platform in ('dos','win32','win16','os2'):\r
        # Use the old CP/M NUL as device name\r
        DEV_NULL = 'NUL'\r
    else:\r
        # Standard Unix uses /dev/null\r
        DEV_NULL = '/dev/null'\r
\r
### Platform specific APIs\r
\r
_libc_search = re.compile(r'(__libc_init)'\r
                          '|'\r
                          '(GLIBC_([0-9.]+))'\r
                          '|'\r
                          '(libc(_\w+)?\.so(?:\.(\d[0-9.]*))?)')\r
\r
def libc_ver(executable=sys.executable,lib='',version='',\r
\r
             chunksize=2048):\r
\r
    """ Tries to determine the libc version that the file executable\r
        (which defaults to the Python interpreter) is linked against.\r
\r
        Returns a tuple of strings (lib,version) which default to the\r
        given parameters in case the lookup fails.\r
\r
        Note that the function has intimate knowledge of how different\r
        libc versions add symbols to the executable and thus is probably\r
        only useable for executables compiled using gcc.\r
\r
        The file is read and scanned in chunks of chunksize bytes.\r
\r
    """\r
    if hasattr(os.path, 'realpath'):\r
        # Python 2.2 introduced os.path.realpath(); it is used\r
        # here to work around problems with Cygwin not being\r
        # able to open symlinks for reading\r
        executable = os.path.realpath(executable)\r
    f = open(executable,'rb')\r
    binary = f.read(chunksize)\r
    pos = 0\r
    while 1:\r
        m = _libc_search.search(binary,pos)\r
        if not m:\r
            binary = f.read(chunksize)\r
            if not binary:\r
                break\r
            pos = 0\r
            continue\r
        libcinit,glibc,glibcversion,so,threads,soversion = m.groups()\r
        if libcinit and not lib:\r
            lib = 'libc'\r
        elif glibc:\r
            if lib != 'glibc':\r
                lib = 'glibc'\r
                version = glibcversion\r
            elif glibcversion > version:\r
                version = glibcversion\r
        elif so:\r
            if lib != 'glibc':\r
                lib = 'libc'\r
                if soversion > version:\r
                    version = soversion\r
                if threads and version[-len(threads):] != threads:\r
                    version = version + threads\r
        pos = m.end()\r
    f.close()\r
    return lib,version\r
\r
def _dist_try_harder(distname,version,id):\r
\r
    """ Tries some special tricks to get the distribution\r
        information in case the default method fails.\r
\r
        Currently supports older SuSE Linux, Caldera OpenLinux and\r
        Slackware Linux distributions.\r
\r
    """\r
    if os.path.exists('/var/adm/inst-log/info'):\r
        # SuSE Linux stores distribution information in that file\r
        info = open('/var/adm/inst-log/info').readlines()\r
        distname = 'SuSE'\r
        for line in info:\r
            tv = string.split(line)\r
            if len(tv) == 2:\r
                tag,value = tv\r
            else:\r
                continue\r
            if tag == 'MIN_DIST_VERSION':\r
                version = string.strip(value)\r
            elif tag == 'DIST_IDENT':\r
                values = string.split(value,'-')\r
                id = values[2]\r
        return distname,version,id\r
\r
    if os.path.exists('/etc/.installed'):\r
        # Caldera OpenLinux has some infos in that file (thanks to Colin Kong)\r
        info = open('/etc/.installed').readlines()\r
        for line in info:\r
            pkg = string.split(line,'-')\r
            if len(pkg) >= 2 and pkg[0] == 'OpenLinux':\r
                # XXX does Caldera support non Intel platforms ? If yes,\r
                #     where can we find the needed id ?\r
                return 'OpenLinux',pkg[1],id\r
\r
    if os.path.isdir('/usr/lib/setup'):\r
        # Check for slackware verson tag file (thanks to Greg Andruk)\r
        verfiles = os.listdir('/usr/lib/setup')\r
        for n in range(len(verfiles)-1, -1, -1):\r
            if verfiles[n][:14] != 'slack-version-':\r
                del verfiles[n]\r
        if verfiles:\r
            verfiles.sort()\r
            distname = 'slackware'\r
            version = verfiles[-1][14:]\r
            return distname,version,id\r
\r
    return distname,version,id\r
\r
_release_filename = re.compile(r'(\w+)[-_](release|version)')\r
_lsb_release_version = re.compile(r'(.+)'\r
                                   ' release '\r
                                   '([\d.]+)'\r
                                   '[^(]*(?:\((.+)\))?')\r
_release_version = re.compile(r'([^0-9]+)'\r
                               '(?: release )?'\r
                               '([\d.]+)'\r
                               '[^(]*(?:\((.+)\))?')\r
\r
# See also http://www.novell.com/coolsolutions/feature/11251.html\r
# and http://linuxmafia.com/faq/Admin/release-files.html\r
# and http://data.linux-ntfs.org/rpm/whichrpm\r
# and http://www.die.net/doc/linux/man/man1/lsb_release.1.html\r
\r
_supported_dists = (\r
    'SuSE', 'debian', 'fedora', 'redhat', 'centos',\r
    'mandrake', 'mandriva', 'rocks', 'slackware', 'yellowdog', 'gentoo',\r
    'UnitedLinux', 'turbolinux')\r
\r
def _parse_release_file(firstline):\r
\r
    # Default to empty 'version' and 'id' strings.  Both defaults are used\r
    # when 'firstline' is empty.  'id' defaults to empty when an id can not\r
    # be deduced.\r
    version = ''\r
    id = ''\r
\r
    # Parse the first line\r
    m = _lsb_release_version.match(firstline)\r
    if m is not None:\r
        # LSB format: "distro release x.x (codename)"\r
        return tuple(m.groups())\r
\r
    # Pre-LSB format: "distro x.x (codename)"\r
    m = _release_version.match(firstline)\r
    if m is not None:\r
        return tuple(m.groups())\r
\r
    # Unkown format... take the first two words\r
    l = string.split(string.strip(firstline))\r
    if l:\r
        version = l[0]\r
        if len(l) > 1:\r
            id = l[1]\r
    return '', version, id\r
\r
def linux_distribution(distname='', version='', id='',\r
\r
                       supported_dists=_supported_dists,\r
                       full_distribution_name=1):\r
\r
    """ Tries to determine the name of the Linux OS distribution name.\r
\r
        The function first looks for a distribution release file in\r
        /etc and then reverts to _dist_try_harder() in case no\r
        suitable files are found.\r
\r
        supported_dists may be given to define the set of Linux\r
        distributions to look for. It defaults to a list of currently\r
        supported Linux distributions identified by their release file\r
        name.\r
\r
        If full_distribution_name is true (default), the full\r
        distribution read from the OS is returned. Otherwise the short\r
        name taken from supported_dists is used.\r
\r
        Returns a tuple (distname,version,id) which default to the\r
        args given as parameters.\r
\r
    """\r
    try:\r
        etc = os.listdir('/etc')\r
    except os.error:\r
        # Probably not a Unix system\r
        return distname,version,id\r
    etc.sort()\r
    for file in etc:\r
        m = _release_filename.match(file)\r
        if m is not None:\r
            _distname,dummy = m.groups()\r
            if _distname in supported_dists:\r
                distname = _distname\r
                break\r
    else:\r
        return _dist_try_harder(distname,version,id)\r
\r
    # Read the first line\r
    f = open('/etc/'+file, 'r')\r
    firstline = f.readline()\r
    f.close()\r
    _distname, _version, _id = _parse_release_file(firstline)\r
\r
    if _distname and full_distribution_name:\r
        distname = _distname\r
    if _version:\r
        version = _version\r
    if _id:\r
        id = _id\r
    return distname, version, id\r
\r
# To maintain backwards compatibility:\r
\r
def dist(distname='',version='',id='',\r
\r
         supported_dists=_supported_dists):\r
\r
    """ Tries to determine the name of the Linux OS distribution name.\r
\r
        The function first looks for a distribution release file in\r
        /etc and then reverts to _dist_try_harder() in case no\r
        suitable files are found.\r
\r
        Returns a tuple (distname,version,id) which default to the\r
        args given as parameters.\r
\r
    """\r
    return linux_distribution(distname, version, id,\r
                              supported_dists=supported_dists,\r
                              full_distribution_name=0)\r
\r
class _popen:\r
\r
    """ Fairly portable (alternative) popen implementation.\r
\r
        This is mostly needed in case os.popen() is not available, or\r
        doesn't work as advertised, e.g. in Win9X GUI programs like\r
        PythonWin or IDLE.\r
\r
        Writing to the pipe is currently not supported.\r
\r
    """\r
    tmpfile = ''\r
    pipe = None\r
    bufsize = None\r
    mode = 'r'\r
\r
    def __init__(self,cmd,mode='r',bufsize=None):\r
\r
        if mode != 'r':\r
            raise ValueError,'popen()-emulation only supports read mode'\r
        import tempfile\r
        self.tmpfile = tmpfile = tempfile.mktemp()\r
        os.system(cmd + ' > %s' % tmpfile)\r
        self.pipe = open(tmpfile,'rb')\r
        self.bufsize = bufsize\r
        self.mode = mode\r
\r
    def read(self):\r
\r
        return self.pipe.read()\r
\r
    def readlines(self):\r
\r
        if self.bufsize is not None:\r
            return self.pipe.readlines()\r
\r
    def close(self,\r
\r
              remove=os.unlink,error=os.error):\r
\r
        if self.pipe:\r
            rc = self.pipe.close()\r
        else:\r
            rc = 255\r
        if self.tmpfile:\r
            try:\r
                remove(self.tmpfile)\r
            except error:\r
                pass\r
        return rc\r
\r
    # Alias\r
    __del__ = close\r
\r
def popen(cmd, mode='r', bufsize=None):\r
\r
    """ Portable popen() interface.\r
    """\r
    # Find a working popen implementation preferring win32pipe.popen\r
    # over os.popen over _popen\r
    popen = None\r
    if os.environ.get('OS','') == 'Windows_NT':\r
        # On NT win32pipe should work; on Win9x it hangs due to bugs\r
        # in the MS C lib (see MS KnowledgeBase article Q150956)\r
        try:\r
            import win32pipe\r
        except ImportError:\r
            pass\r
        else:\r
            popen = win32pipe.popen\r
    if popen is None:\r
        if hasattr(os,'popen'):\r
            popen = os.popen\r
            # Check whether it works... it doesn't in GUI programs\r
            # on Windows platforms\r
            if sys.platform == 'win32': # XXX Others too ?\r
                try:\r
                    popen('')\r
                except os.error:\r
                    popen = _popen\r
        else:\r
            popen = _popen\r
    if bufsize is None:\r
        return popen(cmd,mode)\r
    else:\r
        return popen(cmd,mode,bufsize)\r
\r
def _norm_version(version, build=''):\r
\r
    """ Normalize the version and build strings and return a single\r
        version string using the format major.minor.build (or patchlevel).\r
    """\r
    l = string.split(version,'.')\r
    if build:\r
        l.append(build)\r
    try:\r
        ints = map(int,l)\r
    except ValueError:\r
        strings = l\r
    else:\r
        strings = map(str,ints)\r
    version = string.join(strings[:3],'.')\r
    return version\r
\r
_ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) '\r
                         '.*'\r
                         '\[.* ([\d.]+)\])')\r
\r
# Examples of VER command output:\r
#\r
#   Windows 2000:  Microsoft Windows 2000 [Version 5.00.2195]\r
#   Windows XP:    Microsoft Windows XP [Version 5.1.2600]\r
#   Windows Vista: Microsoft Windows [Version 6.0.6002]\r
#\r
# Note that the "Version" string gets localized on different\r
# Windows versions.\r
\r
def _syscmd_ver(system='', release='', version='',\r
\r
               supported_platforms=('win32','win16','dos','os2')):\r
\r
    """ Tries to figure out the OS version used and returns\r
        a tuple (system,release,version).\r
\r
        It uses the "ver" shell command for this which is known\r
        to exists on Windows, DOS and OS/2. XXX Others too ?\r
\r
        In case this fails, the given parameters are used as\r
        defaults.\r
\r
    """\r
    if sys.platform not in supported_platforms:\r
        return system,release,version\r
\r
    # Try some common cmd strings\r
    for cmd in ('ver','command /c ver','cmd /c ver'):\r
        try:\r
            pipe = popen(cmd)\r
            info = pipe.read()\r
            if pipe.close():\r
                raise os.error,'command failed'\r
            # XXX How can I suppress shell errors from being written\r
            #     to stderr ?\r
        except os.error,why:\r
            #print 'Command %s failed: %s' % (cmd,why)\r
            continue\r
        except IOError,why:\r
            #print 'Command %s failed: %s' % (cmd,why)\r
            continue\r
        else:\r
            break\r
    else:\r
        return system,release,version\r
\r
    # Parse the output\r
    info = string.strip(info)\r
    m = _ver_output.match(info)\r
    if m is not None:\r
        system,release,version = m.groups()\r
        # Strip trailing dots from version and release\r
        if release[-1] == '.':\r
            release = release[:-1]\r
        if version[-1] == '.':\r
            version = version[:-1]\r
        # Normalize the version and build strings (eliminating additional\r
        # zeros)\r
        version = _norm_version(version)\r
    return system,release,version\r
\r
def _win32_getvalue(key,name,default=''):\r
\r
    """ Read a value for name from the registry key.\r
\r
        In case this fails, default is returned.\r
\r
    """\r
    try:\r
        # Use win32api if available\r
        from win32api import RegQueryValueEx\r
    except ImportError:\r
        # On Python 2.0 and later, emulate using _winreg\r
        import _winreg\r
        RegQueryValueEx = _winreg.QueryValueEx\r
    try:\r
        return RegQueryValueEx(key,name)\r
    except:\r
        return default\r
\r
def win32_ver(release='',version='',csd='',ptype=''):\r
\r
    """ Get additional version information from the Windows Registry\r
        and return a tuple (version,csd,ptype) referring to version\r
        number, CSD level and OS type (multi/single\r
        processor).\r
\r
        As a hint: ptype returns 'Uniprocessor Free' on single\r
        processor NT machines and 'Multiprocessor Free' on multi\r
        processor machines. The 'Free' refers to the OS version being\r
        free of debugging code. It could also state 'Checked' which\r
        means the OS version uses debugging code, i.e. code that\r
        checks arguments, ranges, etc. (Thomas Heller).\r
\r
        Note: this function works best with Mark Hammond's win32\r
        package installed, but also on Python 2.3 and later. It\r
        obviously only runs on Win32 compatible platforms.\r
\r
    """\r
    # XXX Is there any way to find out the processor type on WinXX ?\r
    # XXX Is win32 available on Windows CE ?\r
    #\r
    # Adapted from code posted by Karl Putland to comp.lang.python.\r
    #\r
    # The mappings between reg. values and release names can be found\r
    # here: http://msdn.microsoft.com/library/en-us/sysinfo/base/osversioninfo_str.asp\r
\r
    # Import the needed APIs\r
    try:\r
        import win32api\r
        from win32api import RegQueryValueEx, RegOpenKeyEx, \\r
             RegCloseKey, GetVersionEx\r
        from win32con import HKEY_LOCAL_MACHINE, VER_PLATFORM_WIN32_NT, \\r
             VER_PLATFORM_WIN32_WINDOWS, VER_NT_WORKSTATION\r
    except ImportError:\r
        # Emulate the win32api module using Python APIs\r
        try:\r
            sys.getwindowsversion\r
        except AttributeError:\r
            # No emulation possible, so return the defaults...\r
            return release,version,csd,ptype\r
        else:\r
            # Emulation using _winreg (added in Python 2.0) and\r
            # sys.getwindowsversion() (added in Python 2.3)\r
            import _winreg\r
            GetVersionEx = sys.getwindowsversion\r
            RegQueryValueEx = _winreg.QueryValueEx\r
            RegOpenKeyEx = _winreg.OpenKeyEx\r
            RegCloseKey = _winreg.CloseKey\r
            HKEY_LOCAL_MACHINE = _winreg.HKEY_LOCAL_MACHINE\r
            VER_PLATFORM_WIN32_WINDOWS = 1\r
            VER_PLATFORM_WIN32_NT = 2\r
            VER_NT_WORKSTATION = 1\r
            VER_NT_SERVER = 3\r
            REG_SZ = 1\r
\r
    # Find out the registry key and some general version infos\r
    winver = GetVersionEx()\r
    maj,min,buildno,plat,csd = winver\r
    version = '%i.%i.%i' % (maj,min,buildno & 0xFFFF)\r
    if hasattr(winver, "service_pack"):\r
        if winver.service_pack != "":\r
            csd = 'SP%s' % winver.service_pack_major\r
    else:\r
        if csd[:13] == 'Service Pack ':\r
            csd = 'SP' + csd[13:]\r
\r
    if plat == VER_PLATFORM_WIN32_WINDOWS:\r
        regkey = 'SOFTWARE\\Microsoft\\Windows\\CurrentVersion'\r
        # Try to guess the release name\r
        if maj == 4:\r
            if min == 0:\r
                release = '95'\r
            elif min == 10:\r
                release = '98'\r
            elif min == 90:\r
                release = 'Me'\r
            else:\r
                release = 'postMe'\r
        elif maj == 5:\r
            release = '2000'\r
\r
    elif plat == VER_PLATFORM_WIN32_NT:\r
        regkey = 'SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion'\r
        if maj <= 4:\r
            release = 'NT'\r
        elif maj == 5:\r
            if min == 0:\r
                release = '2000'\r
            elif min == 1:\r
                release = 'XP'\r
            elif min == 2:\r
                release = '2003Server'\r
            else:\r
                release = 'post2003'\r
        elif maj == 6:\r
            if hasattr(winver, "product_type"):\r
                product_type = winver.product_type\r
            else:\r
                product_type = VER_NT_WORKSTATION\r
                # Without an OSVERSIONINFOEX capable sys.getwindowsversion(),\r
                # or help from the registry, we cannot properly identify\r
                # non-workstation versions.\r
                try:\r
                    key = RegOpenKeyEx(HKEY_LOCAL_MACHINE, regkey)\r
                    name, type = RegQueryValueEx(key, "ProductName")\r
                    # Discard any type that isn't REG_SZ\r
                    if type == REG_SZ and name.find("Server") != -1:\r
                        product_type = VER_NT_SERVER\r
                except WindowsError:\r
                    # Use default of VER_NT_WORKSTATION\r
                    pass\r
\r
            if min == 0:\r
                if product_type == VER_NT_WORKSTATION:\r
                    release = 'Vista'\r
                else:\r
                    release = '2008Server'\r
            elif min == 1:\r
                if product_type == VER_NT_WORKSTATION:\r
                    release = '7'\r
                else:\r
                    release = '2008ServerR2'\r
            else:\r
                release = 'post2008Server'\r
\r
    else:\r
        if not release:\r
            # E.g. Win3.1 with win32s\r
            release = '%i.%i' % (maj,min)\r
        return release,version,csd,ptype\r
\r
    # Open the registry key\r
    try:\r
        keyCurVer = RegOpenKeyEx(HKEY_LOCAL_MACHINE, regkey)\r
        # Get a value to make sure the key exists...\r
        RegQueryValueEx(keyCurVer, 'SystemRoot')\r
    except:\r
        return release,version,csd,ptype\r
\r
    # Parse values\r
    #subversion = _win32_getvalue(keyCurVer,\r
    #                            'SubVersionNumber',\r
    #                            ('',1))[0]\r
    #if subversion:\r
    #   release = release + subversion # 95a, 95b, etc.\r
    build = _win32_getvalue(keyCurVer,\r
                            'CurrentBuildNumber',\r
                            ('',1))[0]\r
    ptype = _win32_getvalue(keyCurVer,\r
                           'CurrentType',\r
                           (ptype,1))[0]\r
\r
    # Normalize version\r
    version = _norm_version(version,build)\r
\r
    # Close key\r
    RegCloseKey(keyCurVer)\r
    return release,version,csd,ptype\r
\r
def _mac_ver_lookup(selectors,default=None):\r
\r
    from gestalt import gestalt\r
    import MacOS\r
    l = []\r
    append = l.append\r
    for selector in selectors:\r
        try:\r
            append(gestalt(selector))\r
        except (RuntimeError, MacOS.Error):\r
            append(default)\r
    return l\r
\r
def _bcd2str(bcd):\r
\r
    return hex(bcd)[2:]\r
\r
def _mac_ver_gestalt():\r
    """\r
        Thanks to Mark R. Levinson for mailing documentation links and\r
        code examples for this function. Documentation for the\r
        gestalt() API is available online at:\r
\r
           http://www.rgaros.nl/gestalt/\r
    """\r
    # Check whether the version info module is available\r
    try:\r
        import gestalt\r
        import MacOS\r
    except ImportError:\r
        return None\r
    # Get the infos\r
    sysv,sysa = _mac_ver_lookup(('sysv','sysa'))\r
    # Decode the infos\r
    if sysv:\r
        major = (sysv & 0xFF00) >> 8\r
        minor = (sysv & 0x00F0) >> 4\r
        patch = (sysv & 0x000F)\r
\r
        if (major, minor) >= (10, 4):\r
            # the 'sysv' gestald cannot return patchlevels\r
            # higher than 9. Apple introduced 3 new\r
            # gestalt codes in 10.4 to deal with this\r
            # issue (needed because patch levels can\r
            # run higher than 9, such as 10.4.11)\r
            major,minor,patch = _mac_ver_lookup(('sys1','sys2','sys3'))\r
            release = '%i.%i.%i' %(major, minor, patch)\r
        else:\r
            release = '%s.%i.%i' % (_bcd2str(major),minor,patch)\r
\r
    if sysa:\r
        machine = {0x1: '68k',\r
                   0x2: 'PowerPC',\r
                   0xa: 'i386'}.get(sysa,'')\r
\r
    return release,versioninfo,machine\r
\r
def _mac_ver_xml():\r
    fn = '/System/Library/CoreServices/SystemVersion.plist'\r
    if not os.path.exists(fn):\r
        return None\r
\r
    try:\r
        import plistlib\r
    except ImportError:\r
        return None\r
\r
    pl = plistlib.readPlist(fn)\r
    release = pl['ProductVersion']\r
    versioninfo=('', '', '')\r
    machine = os.uname()[4]\r
    if machine in ('ppc', 'Power Macintosh'):\r
        # for compatibility with the gestalt based code\r
        machine = 'PowerPC'\r
\r
    return release,versioninfo,machine\r
\r
\r
def mac_ver(release='',versioninfo=('','',''),machine=''):\r
\r
    """ Get MacOS version information and return it as tuple (release,\r
        versioninfo, machine) with versioninfo being a tuple (version,\r
        dev_stage, non_release_version).\r
\r
        Entries which cannot be determined are set to the paramter values\r
        which default to ''. All tuple entries are strings.\r
    """\r
\r
    # First try reading the information from an XML file which should\r
    # always be present\r
    info = _mac_ver_xml()\r
    if info is not None:\r
        return info\r
\r
    # If that doesn't work for some reason fall back to reading the\r
    # information using gestalt calls.\r
    info = _mac_ver_gestalt()\r
    if info is not None:\r
        return info\r
\r
    # If that also doesn't work return the default values\r
    return release,versioninfo,machine\r
\r
def _java_getprop(name,default):\r
\r
    from java.lang import System\r
    try:\r
        value = System.getProperty(name)\r
        if value is None:\r
            return default\r
        return value\r
    except AttributeError:\r
        return default\r
\r
def java_ver(release='',vendor='',vminfo=('','',''),osinfo=('','','')):\r
\r
    """ Version interface for Jython.\r
\r
        Returns a tuple (release,vendor,vminfo,osinfo) with vminfo being\r
        a tuple (vm_name,vm_release,vm_vendor) and osinfo being a\r
        tuple (os_name,os_version,os_arch).\r
\r
        Values which cannot be determined are set to the defaults\r
        given as parameters (which all default to '').\r
\r
    """\r
    # Import the needed APIs\r
    try:\r
        import java.lang\r
    except ImportError:\r
        return release,vendor,vminfo,osinfo\r
\r
    vendor = _java_getprop('java.vendor', vendor)\r
    release = _java_getprop('java.version', release)\r
    vm_name, vm_release, vm_vendor = vminfo\r
    vm_name = _java_getprop('java.vm.name', vm_name)\r
    vm_vendor = _java_getprop('java.vm.vendor', vm_vendor)\r
    vm_release = _java_getprop('java.vm.version', vm_release)\r
    vminfo = vm_name, vm_release, vm_vendor\r
    os_name, os_version, os_arch = osinfo\r
    os_arch = _java_getprop('java.os.arch', os_arch)\r
    os_name = _java_getprop('java.os.name', os_name)\r
    os_version = _java_getprop('java.os.version', os_version)\r
    osinfo = os_name, os_version, os_arch\r
\r
    return release, vendor, vminfo, osinfo\r
\r
### System name aliasing\r
\r
def system_alias(system,release,version):\r
\r
    """ Returns (system,release,version) aliased to common\r
        marketing names used for some systems.\r
\r
        It also does some reordering of the information in some cases\r
        where it would otherwise cause confusion.\r
\r
    """\r
    if system == 'Rhapsody':\r
        # Apple's BSD derivative\r
        # XXX How can we determine the marketing release number ?\r
        return 'MacOS X Server',system+release,version\r
\r
    elif system == 'SunOS':\r
        # Sun's OS\r
        if release < '5':\r
            # These releases use the old name SunOS\r
            return system,release,version\r
        # Modify release (marketing release = SunOS release - 3)\r
        l = string.split(release,'.')\r
        if l:\r
            try:\r
                major = int(l[0])\r
            except ValueError:\r
                pass\r
            else:\r
                major = major - 3\r
                l[0] = str(major)\r
                release = string.join(l,'.')\r
        if release < '6':\r
            system = 'Solaris'\r
        else:\r
            # XXX Whatever the new SunOS marketing name is...\r
            system = 'Solaris'\r
\r
    elif system == 'IRIX64':\r
        # IRIX reports IRIX64 on platforms with 64-bit support; yet it\r
        # is really a version and not a different platform, since 32-bit\r
        # apps are also supported..\r
        system = 'IRIX'\r
        if version:\r
            version = version + ' (64bit)'\r
        else:\r
            version = '64bit'\r
\r
    elif system in ('win32','win16'):\r
        # In case one of the other tricks\r
        system = 'Windows'\r
\r
    return system,release,version\r
\r
### Various internal helpers\r
\r
def _platform(*args):\r
\r
    """ Helper to format the platform string in a filename\r
        compatible format e.g. "system-version-machine".\r
    """\r
    # Format the platform string\r
    platform = string.join(\r
        map(string.strip,\r
            filter(len, args)),\r
        '-')\r
\r
    # Cleanup some possible filename obstacles...\r
    replace = string.replace\r
    platform = replace(platform,' ','_')\r
    platform = replace(platform,'/','-')\r
    platform = replace(platform,'\\','-')\r
    platform = replace(platform,':','-')\r
    platform = replace(platform,';','-')\r
    platform = replace(platform,'"','-')\r
    platform = replace(platform,'(','-')\r
    platform = replace(platform,')','-')\r
\r
    # No need to report 'unknown' information...\r
    platform = replace(platform,'unknown','')\r
\r
    # Fold '--'s and remove trailing '-'\r
    while 1:\r
        cleaned = replace(platform,'--','-')\r
        if cleaned == platform:\r
            break\r
        platform = cleaned\r
    while platform[-1] == '-':\r
        platform = platform[:-1]\r
\r
    return platform\r
\r
def _node(default=''):\r
\r
    """ Helper to determine the node name of this machine.\r
    """\r
    try:\r
        import socket\r
    except ImportError:\r
        # No sockets...\r
        return default\r
    try:\r
        return socket.gethostname()\r
    except socket.error:\r
        # Still not working...\r
        return default\r
\r
# os.path.abspath is new in Python 1.5.2:\r
if not hasattr(os.path,'abspath'):\r
\r
    def _abspath(path,\r
\r
                 isabs=os.path.isabs,join=os.path.join,getcwd=os.getcwd,\r
                 normpath=os.path.normpath):\r
\r
        if not isabs(path):\r
            path = join(getcwd(), path)\r
        return normpath(path)\r
\r
else:\r
\r
    _abspath = os.path.abspath\r
\r
def _follow_symlinks(filepath):\r
\r
    """ In case filepath is a symlink, follow it until a\r
        real file is reached.\r
    """\r
    filepath = _abspath(filepath)\r
    while os.path.islink(filepath):\r
        filepath = os.path.normpath(\r
            os.path.join(os.path.dirname(filepath),os.readlink(filepath)))\r
    return filepath\r
\r
def _syscmd_uname(option,default=''):\r
\r
    """ Interface to the system's uname command.\r
    """\r
    if sys.platform in ('dos','win32','win16','os2'):\r
        # XXX Others too ?\r
        return default\r
    try:\r
        f = os.popen('uname %s 2> %s' % (option, DEV_NULL))\r
    except (AttributeError,os.error):\r
        return default\r
    output = string.strip(f.read())\r
    rc = f.close()\r
    if not output or rc:\r
        return default\r
    else:\r
        return output\r
\r
def _syscmd_file(target,default=''):\r
\r
    """ Interface to the system's file command.\r
\r
        The function uses the -b option of the file command to have it\r
        ommit the filename in its output and if possible the -L option\r
        to have the command follow symlinks. It returns default in\r
        case the command should fail.\r
\r
    """\r
    if sys.platform in ('dos','win32','win16','os2'):\r
        # XXX Others too ?\r
        return default\r
    target = _follow_symlinks(target).replace('"', '\\"')\r
    try:\r
        f = os.popen('file "%s" 2> %s' % (target, DEV_NULL))\r
    except (AttributeError,os.error):\r
        return default\r
    output = string.strip(f.read())\r
    rc = f.close()\r
    if not output or rc:\r
        return default\r
    else:\r
        return output\r
\r
### Information about the used architecture\r
\r
# Default values for architecture; non-empty strings override the\r
# defaults given as parameters\r
_default_architecture = {\r
    'win32': ('','WindowsPE'),\r
    'win16': ('','Windows'),\r
    'dos': ('','MSDOS'),\r
}\r
\r
_architecture_split = re.compile(r'[\s,]').split\r
\r
def architecture(executable=sys.executable,bits='',linkage=''):\r
\r
    """ Queries the given executable (defaults to the Python interpreter\r
        binary) for various architecture information.\r
\r
        Returns a tuple (bits,linkage) which contains information about\r
        the bit architecture and the linkage format used for the\r
        executable. Both values are returned as strings.\r
\r
        Values that cannot be determined are returned as given by the\r
        parameter presets. If bits is given as '', the sizeof(pointer)\r
        (or sizeof(long) on Python version < 1.5.2) is used as\r
        indicator for the supported pointer size.\r
\r
        The function relies on the system's "file" command to do the\r
        actual work. This is available on most if not all Unix\r
        platforms. On some non-Unix platforms where the "file" command\r
        does not exist and the executable is set to the Python interpreter\r
        binary defaults from _default_architecture are used.\r
\r
    """\r
    # Use the sizeof(pointer) as default number of bits if nothing\r
    # else is given as default.\r
    if not bits:\r
        import struct\r
        try:\r
            size = struct.calcsize('P')\r
        except struct.error:\r
            # Older installations can only query longs\r
            size = struct.calcsize('l')\r
        bits = str(size*8) + 'bit'\r
\r
    # Get data from the 'file' system command\r
    if executable:\r
        output = _syscmd_file(executable, '')\r
    else:\r
        output = ''\r
\r
    if not output and \\r
       executable == sys.executable:\r
        # "file" command did not return anything; we'll try to provide\r
        # some sensible defaults then...\r
        if sys.platform in _default_architecture:\r
            b, l = _default_architecture[sys.platform]\r
            if b:\r
                bits = b\r
            if l:\r
                linkage = l\r
        return bits, linkage\r
\r
    # Split the output into a list of strings omitting the filename\r
    fileout = _architecture_split(output)[1:]\r
\r
    if 'executable' not in fileout:\r
        # Format not supported\r
        return bits,linkage\r
\r
    # Bits\r
    if '32-bit' in fileout:\r
        bits = '32bit'\r
    elif 'N32' in fileout:\r
        # On Irix only\r
        bits = 'n32bit'\r
    elif '64-bit' in fileout:\r
        bits = '64bit'\r
\r
    # Linkage\r
    if 'ELF' in fileout:\r
        linkage = 'ELF'\r
    elif 'PE' in fileout:\r
        # E.g. Windows uses this format\r
        if 'Windows' in fileout:\r
            linkage = 'WindowsPE'\r
        else:\r
            linkage = 'PE'\r
    elif 'COFF' in fileout:\r
        linkage = 'COFF'\r
    elif 'MS-DOS' in fileout:\r
        linkage = 'MSDOS'\r
    else:\r
        # XXX the A.OUT format also falls under this class...\r
        pass\r
\r
    return bits,linkage\r
\r
### Portable uname() interface\r
\r
_uname_cache = None\r
\r
def uname():\r
\r
    """ Fairly portable uname interface. Returns a tuple\r
        of strings (system,node,release,version,machine,processor)\r
        identifying the underlying platform.\r
\r
        Note that unlike the os.uname function this also returns\r
        possible processor information as an additional tuple entry.\r
\r
        Entries which cannot be determined are set to ''.\r
\r
    """\r
    global _uname_cache\r
    no_os_uname = 0\r
\r
    if _uname_cache is not None:\r
        return _uname_cache\r
\r
    processor = ''\r
\r
    # Get some infos from the builtin os.uname API...\r
    try:\r
        system,node,release,version,machine = os.uname()\r
    except AttributeError:\r
        no_os_uname = 1\r
\r
    if no_os_uname or not filter(None, (system, node, release, version, machine)):\r
        # Hmm, no there is either no uname or uname has returned\r
        #'unknowns'... we'll have to poke around the system then.\r
        if no_os_uname:\r
            system = sys.platform\r
            release = ''\r
            version = ''\r
            node = _node()\r
            machine = ''\r
\r
        use_syscmd_ver = 1\r
\r
        # Try win32_ver() on win32 platforms\r
        if system == 'win32':\r
            release,version,csd,ptype = win32_ver()\r
            if release and version:\r
                use_syscmd_ver = 0\r
            # Try to use the PROCESSOR_* environment variables\r
            # available on Win XP and later; see\r
            # http://support.microsoft.com/kb/888731 and\r
            # http://www.geocities.com/rick_lively/MANUALS/ENV/MSWIN/PROCESSI.HTM\r
            if not machine:\r
                # WOW64 processes mask the native architecture\r
                if "PROCESSOR_ARCHITEW6432" in os.environ:\r
                    machine = os.environ.get("PROCESSOR_ARCHITEW6432", '')\r
                else:\r
                    machine = os.environ.get('PROCESSOR_ARCHITECTURE', '')\r
            if not processor:\r
                processor = os.environ.get('PROCESSOR_IDENTIFIER', machine)\r
\r
        # Try the 'ver' system command available on some\r
        # platforms\r
        if use_syscmd_ver:\r
            system,release,version = _syscmd_ver(system)\r
            # Normalize system to what win32_ver() normally returns\r
            # (_syscmd_ver() tends to return the vendor name as well)\r
            if system == 'Microsoft Windows':\r
                system = 'Windows'\r
            elif system == 'Microsoft' and release == 'Windows':\r
                # Under Windows Vista and Windows Server 2008,\r
                # Microsoft changed the output of the ver command. The\r
                # release is no longer printed.  This causes the\r
                # system and release to be misidentified.\r
                system = 'Windows'\r
                if '6.0' == version[:3]:\r
                    release = 'Vista'\r
                else:\r
                    release = ''\r
\r
        # In case we still don't know anything useful, we'll try to\r
        # help ourselves\r
        if system in ('win32','win16'):\r
            if not version:\r
                if system == 'win32':\r
                    version = '32bit'\r
                else:\r
                    version = '16bit'\r
            system = 'Windows'\r
\r
        elif system[:4] == 'java':\r
            release,vendor,vminfo,osinfo = java_ver()\r
            system = 'Java'\r
            version = string.join(vminfo,', ')\r
            if not version:\r
                version = vendor\r
\r
    # System specific extensions\r
    if system == 'OpenVMS':\r
        # OpenVMS seems to have release and version mixed up\r
        if not release or release == '0':\r
            release = version\r
            version = ''\r
        # Get processor information\r
        try:\r
            import vms_lib\r
        except ImportError:\r
            pass\r
        else:\r
            csid, cpu_number = vms_lib.getsyi('SYI$_CPU',0)\r
            if (cpu_number >= 128):\r
                processor = 'Alpha'\r
            else:\r
                processor = 'VAX'\r
    if not processor:\r
        # Get processor information from the uname system command\r
        processor = _syscmd_uname('-p','')\r
\r
    #If any unknowns still exist, replace them with ''s, which are more portable\r
    if system == 'unknown':\r
        system = ''\r
    if node == 'unknown':\r
        node = ''\r
    if release == 'unknown':\r
        release = ''\r
    if version == 'unknown':\r
        version = ''\r
    if machine == 'unknown':\r
        machine = ''\r
    if processor == 'unknown':\r
        processor = ''\r
\r
    #  normalize name\r
    if system == 'Microsoft' and release == 'Windows':\r
        system = 'Windows'\r
        release = 'Vista'\r
\r
    _uname_cache = system,node,release,version,machine,processor\r
    return _uname_cache\r
\r
### Direct interfaces to some of the uname() return values\r
\r
def system():\r
\r
    """ Returns the system/OS name, e.g. 'Linux', 'Windows' or 'Java'.\r
\r
        An empty string is returned if the value cannot be determined.\r
\r
    """\r
    return uname()[0]\r
\r
def node():\r
\r
    """ Returns the computer's network name (which may not be fully\r
        qualified)\r
\r
        An empty string is returned if the value cannot be determined.\r
\r
    """\r
    return uname()[1]\r
\r
def release():\r
\r
    """ Returns the system's release, e.g. '2.2.0' or 'NT'\r
\r
        An empty string is returned if the value cannot be determined.\r
\r
    """\r
    return uname()[2]\r
\r
def version():\r
\r
    """ Returns the system's release version, e.g. '#3 on degas'\r
\r
        An empty string is returned if the value cannot be determined.\r
\r
    """\r
    return uname()[3]\r
\r
def machine():\r
\r
    """ Returns the machine type, e.g. 'i386'\r
\r
        An empty string is returned if the value cannot be determined.\r
\r
    """\r
    return uname()[4]\r
\r
def processor():\r
\r
    """ Returns the (true) processor name, e.g. 'amdk6'\r
\r
        An empty string is returned if the value cannot be\r
        determined. Note that many platforms do not provide this\r
        information or simply return the same value as for machine(),\r
        e.g.  NetBSD does this.\r
\r
    """\r
    return uname()[5]\r
\r
### Various APIs for extracting information from sys.version\r
\r
_sys_version_parser = re.compile(\r
    r'([\w.+]+)\s*'\r
    '\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'\r
    '\[([^\]]+)\]?')\r
\r
_ironpython_sys_version_parser = re.compile(\r
    r'IronPython\s*'\r
    '([\d\.]+)'\r
    '(?: \(([\d\.]+)\))?'\r
    ' on (.NET [\d\.]+)')\r
\r
_pypy_sys_version_parser = re.compile(\r
    r'([\w.+]+)\s*'\r
    '\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'\r
    '\[PyPy [^\]]+\]?')\r
\r
_sys_version_cache = {}\r
\r
def _sys_version(sys_version=None):\r
\r
    """ Returns a parsed version of Python's sys.version as tuple\r
        (name, version, branch, revision, buildno, builddate, compiler)\r
        referring to the Python implementation name, version, branch,\r
        revision, build number, build date/time as string and the compiler\r
        identification string.\r
\r
        Note that unlike the Python sys.version, the returned value\r
        for the Python version will always include the patchlevel (it\r
        defaults to '.0').\r
\r
        The function returns empty strings for tuple entries that\r
        cannot be determined.\r
\r
        sys_version may be given to parse an alternative version\r
        string, e.g. if the version was read from a different Python\r
        interpreter.\r
\r
    """\r
    # Get the Python version\r
    if sys_version is None:\r
        sys_version = sys.version\r
\r
    # Try the cache first\r
    result = _sys_version_cache.get(sys_version, None)\r
    if result is not None:\r
        return result\r
\r
    # Parse it\r
    if sys_version[:10] == 'IronPython':\r
        # IronPython\r
        name = 'IronPython'\r
        match = _ironpython_sys_version_parser.match(sys_version)\r
        if match is None:\r
            raise ValueError(\r
                'failed to parse IronPython sys.version: %s' %\r
                repr(sys_version))\r
        version, alt_version, compiler = match.groups()\r
        buildno = ''\r
        builddate = ''\r
\r
    elif sys.platform[:4] == 'java':\r
        # Jython\r
        name = 'Jython'\r
        match = _sys_version_parser.match(sys_version)\r
        if match is None:\r
            raise ValueError(\r
                'failed to parse Jython sys.version: %s' %\r
                repr(sys_version))\r
        version, buildno, builddate, buildtime, _ = match.groups()\r
        compiler = sys.platform\r
\r
    elif "PyPy" in sys_version:\r
        # PyPy\r
        name = "PyPy"\r
        match = _pypy_sys_version_parser.match(sys_version)\r
        if match is None:\r
            raise ValueError("failed to parse PyPy sys.version: %s" %\r
                             repr(sys_version))\r
        version, buildno, builddate, buildtime = match.groups()\r
        compiler = ""\r
\r
    else:\r
        # CPython\r
        match = _sys_version_parser.match(sys_version)\r
        if match is None:\r
            raise ValueError(\r
                'failed to parse CPython sys.version: %s' %\r
                repr(sys_version))\r
        version, buildno, builddate, buildtime, compiler = \\r
              match.groups()\r
        name = 'CPython'\r
        builddate = builddate + ' ' + buildtime\r
\r
    if hasattr(sys, 'subversion'):\r
        # sys.subversion was added in Python 2.5\r
        _, branch, revision = sys.subversion\r
    else:\r
        branch = ''\r
        revision = ''\r
\r
    # Add the patchlevel version if missing\r
    l = string.split(version, '.')\r
    if len(l) == 2:\r
        l.append('0')\r
        version = string.join(l, '.')\r
\r
    # Build and cache the result\r
    result = (name, version, branch, revision, buildno, builddate, compiler)\r
    _sys_version_cache[sys_version] = result\r
    return result\r
\r
def python_implementation():\r
\r
    """ Returns a string identifying the Python implementation.\r
\r
        Currently, the following implementations are identified:\r
          'CPython' (C implementation of Python),\r
          'IronPython' (.NET implementation of Python),\r
          'Jython' (Java implementation of Python),\r
          'PyPy' (Python implementation of Python).\r
\r
    """\r
    return _sys_version()[0]\r
\r
def python_version():\r
\r
    """ Returns the Python version as string 'major.minor.patchlevel'\r
\r
        Note that unlike the Python sys.version, the returned value\r
        will always include the patchlevel (it defaults to 0).\r
\r
    """\r
    return _sys_version()[1]\r
\r
def python_version_tuple():\r
\r
    """ Returns the Python version as tuple (major, minor, patchlevel)\r
        of strings.\r
\r
        Note that unlike the Python sys.version, the returned value\r
        will always include the patchlevel (it defaults to 0).\r
\r
    """\r
    return tuple(string.split(_sys_version()[1], '.'))\r
\r
def python_branch():\r
\r
    """ Returns a string identifying the Python implementation\r
        branch.\r
\r
        For CPython this is the Subversion branch from which the\r
        Python binary was built.\r
\r
        If not available, an empty string is returned.\r
\r
    """\r
\r
    return _sys_version()[2]\r
\r
def python_revision():\r
\r
    """ Returns a string identifying the Python implementation\r
        revision.\r
\r
        For CPython this is the Subversion revision from which the\r
        Python binary was built.\r
\r
        If not available, an empty string is returned.\r
\r
    """\r
    return _sys_version()[3]\r
\r
def python_build():\r
\r
    """ Returns a tuple (buildno, builddate) stating the Python\r
        build number and date as strings.\r
\r
    """\r
    return _sys_version()[4:6]\r
\r
def python_compiler():\r
\r
    """ Returns a string identifying the compiler used for compiling\r
        Python.\r
\r
    """\r
    return _sys_version()[6]\r
\r
### The Opus Magnum of platform strings :-)\r
\r
_platform_cache = {}\r
\r
def platform(aliased=0, terse=0):\r
\r
    """ Returns a single string identifying the underlying platform\r
        with as much useful information as possible (but no more :).\r
\r
        The output is intended to be human readable rather than\r
        machine parseable. It may look different on different\r
        platforms and this is intended.\r
\r
        If "aliased" is true, the function will use aliases for\r
        various platforms that report system names which differ from\r
        their common names, e.g. SunOS will be reported as\r
        Solaris. The system_alias() function is used to implement\r
        this.\r
\r
        Setting terse to true causes the function to return only the\r
        absolute minimum information needed to identify the platform.\r
\r
    """\r
    result = _platform_cache.get((aliased, terse), None)\r
    if result is not None:\r
        return result\r
\r
    # Get uname information and then apply platform specific cosmetics\r
    # to it...\r
    system,node,release,version,machine,processor = uname()\r
    if machine == processor:\r
        processor = ''\r
    if aliased:\r
        system,release,version = system_alias(system,release,version)\r
\r
    if system == 'Windows':\r
        # MS platforms\r
        rel,vers,csd,ptype = win32_ver(version)\r
        if terse:\r
            platform = _platform(system,release)\r
        else:\r
            platform = _platform(system,release,version,csd)\r
\r
    elif system in ('Linux',):\r
        # Linux based systems\r
        distname,distversion,distid = dist('')\r
        if distname and not terse:\r
            platform = _platform(system,release,machine,processor,\r
                                 'with',\r
                                 distname,distversion,distid)\r
        else:\r
            # If the distribution name is unknown check for libc vs. glibc\r
            libcname,libcversion = libc_ver(sys.executable)\r
            platform = _platform(system,release,machine,processor,\r
                                 'with',\r
                                 libcname+libcversion)\r
    elif system == 'Java':\r
        # Java platforms\r
        r,v,vminfo,(os_name,os_version,os_arch) = java_ver()\r
        if terse or not os_name:\r
            platform = _platform(system,release,version)\r
        else:\r
            platform = _platform(system,release,version,\r
                                 'on',\r
                                 os_name,os_version,os_arch)\r
\r
    elif system == 'MacOS':\r
        # MacOS platforms\r
        if terse:\r
            platform = _platform(system,release)\r
        else:\r
            platform = _platform(system,release,machine)\r
\r
    else:\r
        # Generic handler\r
        if terse:\r
            platform = _platform(system,release)\r
        else:\r
            bits,linkage = architecture(sys.executable)\r
            platform = _platform(system,release,machine,processor,bits,linkage)\r
\r
    _platform_cache[(aliased, terse)] = platform\r
    return platform\r
\r
### Command line interface\r
\r
if __name__ == '__main__':\r
    # Default is to print the aliased verbose platform string\r
    terse = ('terse' in sys.argv or '--terse' in sys.argv)\r
    aliased = (not 'nonaliased' in sys.argv and not '--nonaliased' in sys.argv)\r
    print platform(aliased,terse)\r
    sys.exit(0)\r