PC Extra 07 & 08/pca1507.iso/Software/psp8/Data1.cab/os.pyc

Python Compiled Bytecode | 2003-04-22 | 21.8 KB | 685 lines

# Source Generated with Decompyle++
# File: in.pyc (Python 2.2)

"""OS routines for Mac, DOS, NT, or Posix depending on what system we're on.

This exports:
  - all functions from posix, nt, dos, os2, mac, or ce, e.g. unlink, stat, etc.
  - os.path is one of the modules posixpath, ntpath, macpath, or dospath
  - os.name is 'posix', 'nt', 'dos', 'os2', 'mac', 'ce' or 'riscos'
  - os.curdir is a string representing the current directory ('.' or ':')
  - os.pardir is a string representing the parent directory ('..' or '::')
  - os.sep is the (or a most common) pathname separator ('/' or ':' or '\\\\')
  - os.extsep is the extension separator ('.' or '/')
  - os.altsep is the alternate pathname separator (None or '/')
  - os.pathsep is the component separator used in $PATH etc
  - os.linesep is the line separator in text files ('\\r' or '\\n' or '\\r\\n')
  - os.defpath is the default search path for executables

Programs that import and use 'os' stand a better chance of being
portable between different platforms.  Of course, they must then
only use functions that are defined by all platforms (e.g., unlink
and opendir), and leave all pathname manipulation to os.path
(e.g., split and join).
"""
import sys
_names = sys.builtin_module_names
altsep = None
__all__ = [
    'altsep',
    'curdir',
    'pardir',
    'sep',
    'pathsep',
    'linesep',
    'defpath',
    'name']

def _get_exports_list(module):

    try:
        return list(module.__all__)
    except AttributeError:
        return None if n[0] != '_' else []


if 'posix' in _names:
    name = 'posix'
    linesep = '\n'
    curdir = '.'
    pardir = '..'
    sep = '/'
    pathsep = ':'
    defpath = ':/bin:/usr/bin'
    from posix import *

    try:
        from posix import _exit
    except ImportError:
        pass

    import posixpath
    path = posixpath
    del posixpath
    import posix
    __all__.extend(_get_exports_list(posix))
    del posix
elif 'nt' in _names:
    name = 'nt'
    linesep = '\r\n'
    curdir = '.'
    pardir = '..'
    sep = '\\'
    pathsep = ';'
    defpath = '.;C:\\bin'
    from nt import *
    for i in [
        '_exit']:

        try:
            exec 'from nt import ' + i
        except ImportError:
            pass


    import ntpath
    path = ntpath
    del ntpath
    import nt
    __all__.extend(_get_exports_list(nt))
    del nt
elif 'dos' in _names:
    name = 'dos'
    linesep = '\r\n'
    curdir = '.'
    pardir = '..'
    sep = '\\'
    pathsep = ';'
    defpath = '.;C:\\bin'
    from dos import *

    try:
        from dos import _exit
    except ImportError:
        pass

    import dospath
    path = dospath
    del dospath
    import dos
    __all__.extend(_get_exports_list(dos))
    del dos
elif 'os2' in _names:
    name = 'os2'
    linesep = '\r\n'
    curdir = '.'
    pardir = '..'
    sep = '\\'
    pathsep = ';'
    defpath = '.;C:\\bin'
    from os2 import *

    try:
        from os2 import _exit
    except ImportError:
        pass

    import ntpath
    path = ntpath
    del ntpath
    import os2
    __all__.extend(_get_exports_list(os2))
    del os2
elif 'mac' in _names:
    name = 'mac'
    linesep = '\r'
    curdir = ':'
    pardir = '::'
    sep = ':'
    pathsep = '\n'
    defpath = ':'
    from mac import *

    try:
        from mac import _exit
    except ImportError:
        pass

    import macpath
    path = macpath
    del macpath
    import mac
    __all__.extend(_get_exports_list(mac))
    del mac
elif 'ce' in _names:
    name = 'ce'
    linesep = '\r\n'
    curdir = '.'
    pardir = '..'
    sep = '\\'
    pathsep = ';'
    defpath = '\\Windows'
    from ce import *
    for i in [
        '_exit']:

        try:
            exec 'from ce import ' + i
        except ImportError:
            pass


    import ntpath
    path = ntpath
    del ntpath
    import ce
    __all__.extend(_get_exports_list(ce))
    del ce
elif 'riscos' in _names:
    name = 'riscos'
    linesep = '\n'
    curdir = '@'
    pardir = '^'
    sep = '.'
    pathsep = ','
    defpath = '<Run$Dir>'
    from riscos import *

    try:
        from riscos import _exit
    except ImportError:
        pass

    import riscospath
    path = riscospath
    del riscospath
    import riscos
    __all__.extend(_get_exports_list(riscos))
    del riscos
else:
    raise ImportError, 'no os specific module found'
if sep == '.':
    extsep = '/'
else:
    extsep = '.'
__all__.append('path')
del _names
sys.modules['os.path'] = path

def makedirs(name, mode = 511):
    '''makedirs(path [, mode=0777]) -> None

    Super-mkdir; create a leaf directory and all intermediate ones.
    Works like mkdir, except that any intermediate path segment (not
    just the rightmost) will be created if it does not exist.  This is
    recursive.

    '''
    (head, tail) = path.split(name)
    if not tail:
        (head, tail) = path.split(head)

    if head and tail and not path.exists(head):
        makedirs(head, mode)

    mkdir(name, mode)


def removedirs(name):
    '''removedirs(path) -> None

    Super-rmdir; remove a leaf directory and empty all intermediate
    ones.  Works like rmdir except that, if the leaf directory is
    successfully removed, directories corresponding to rightmost path
    segments will be pruned way until either the whole path is
    consumed or an error occurs.  Errors during this latter phase are
    ignored -- they generally mean that a directory was not empty.

    '''
    rmdir(name)
    (head, tail) = path.split(name)
    if not tail:
        (head, tail) = path.split(head)

    while head and tail:

        try:
            rmdir(head)
        except error:
            break

        (head, tail) = path.split(head)


def renames(old, new):
    '''renames(old, new) -> None

    Super-rename; create directories as necessary and delete any left
    empty.  Works like rename, except creation of any intermediate
    directories needed to make the new pathname good is attempted
    first.  After the rename, directories corresponding to rightmost
    path segments of the old name will be pruned way until either the
    whole path is consumed or a nonempty directory is found.

    Note: this function can fail with the new directory structure made
    if you lack permissions needed to unlink the leaf directory or
    file.

    '''
    (head, tail) = path.split(new)
    if head and tail and not path.exists(head):
        makedirs(head)

    rename(old, new)
    (head, tail) = path.split(old)
    if head and tail:

        try:
            removedirs(head)
        except error:
            pass



__all__.extend([
    'makedirs',
    'removedirs',
    'renames'])

try:
    environ
except NameError:
    environ = { }


def execl(file, *args):
    '''execl(file, *args)

    Execute the executable file with argument list args, replacing the
    current process. '''
    execv(file, args)


def execle(file, *args):
    '''execle(file, *args, env)

    Execute the executable file with argument list args and
    environment env, replacing the current process. '''
    env = args[-1]
    execve(file, args[:-1], env)


def execlp(file, *args):
    '''execlp(file, *args)

    Execute the executable file (which is searched for along $PATH)
    with argument list args, replacing the current process. '''
    execvp(file, args)


def execlpe(file, *args):
    '''execlpe(file, *args, env)

    Execute the executable file (which is searched for along $PATH)
    with argument list args and environment env, replacing the current
    process. '''
    env = args[-1]
    execvpe(file, args[:-1], env)


def execvp(file, args):
    '''execp(file, args)

    Execute the executable file (which is searched for along $PATH)
    with argument list args, replacing the current process.
    args may be a list or tuple of strings. '''
    _execvpe(file, args)


def execvpe(file, args, env):
    '''execv(file, args, env)

    Execute the executable file (which is searched for along $PATH)
    with argument list args and environment env , replacing the
    current process.
    args may be a list or tuple of strings. '''
    _execvpe(file, args, env)

__all__.extend([
    'execl',
    'execle',
    'execlp',
    'execlpe',
    'execvp',
    'execvpe'])
_notfound = None

def _execvpe(file, args, env = None):
    global _notfound, _notfound
    if env is not None:
        func = execve
        argrest = (args, env)
    else:
        func = execv
        argrest = (args,)
        env = environ
    (head, tail) = path.split(file)
    if head:
        apply(func, (file,) + argrest)
        return None

    if env.has_key('PATH'):
        envpath = env['PATH']
    else:
        envpath = defpath
    PATH = envpath.split(pathsep)
    if not _notfound:
        if sys.platform[:4] == 'beos':

            try:
                unlink('/_#.# ## #.#')
            except error:
                _notfound = None

        else:
            import tempfile
            t = tempfile.mktemp()

            try:
                execv(t, ('blah',))
            except error:
                _notfound = None


    (exc, arg) = (error, _notfound)
    for dir in PATH:
        fullname = path.join(dir, file)

        try:
            apply(func, (fullname,) + argrest)
        except error:
            (errno, msg) = None
            if errno != arg[0]:
                (exc, arg) = (error, (errno, msg))

        except:
            errno != arg[0]


    raise exc, arg


try:
    putenv
except NameError:
    pass

import UserDict
if name in ('os2', 'nt', 'dos'):

    def unsetenv(key):
        putenv(key, '')


if name == 'riscos':
    from riscosenviron import _Environ
elif name in ('os2', 'nt', 'dos'):

    class _Environ(UserDict.UserDict):

        def __init__(self, environ):
            UserDict.UserDict.__init__(self)
            data = self.data
            for k, v in environ.items():
                data[k.upper()] = v



        def __setitem__(self, key, item):
            putenv(key, item)
            self.data[key.upper()] = item


        def __getitem__(self, key):
            return self.data[key.upper()]


        try:
            unsetenv
        except NameError:

            def __delitem__(self, key):
                del self.data[key.upper()]



        def __delitem__(self, key):
            unsetenv(key)
            del self.data[key.upper()]


        def has_key(self, key):
            return self.data.has_key(key.upper())


        def get(self, key, failobj = None):
            return self.data.get(key.upper(), failobj)


        def update(self, dict):
            for k, v in dict.items():
                self[k] = v



else:

    class _Environ(UserDict.UserDict):

        def __init__(self, environ):
            UserDict.UserDict.__init__(self)
            self.data = environ


        def __setitem__(self, key, item):
            putenv(key, item)
            self.data[key] = item


        def update(self, dict):
            for k, v in dict.items():
                self[k] = v



        try:
            unsetenv
        except NameError:
            pass


        def __delitem__(self, key):
            unsetenv(key)
            del self.data[key]


environ = _Environ(environ)

def getenv(key, default = None):
    """Get an environment variable, return None if it doesn't exist.
        The optional second argument can specify an alternate default."""
    return environ.get(key, default)

__all__.append('getenv')

def _exists(name):

    try:
        eval(name)
        return 1
    except NameError:
        return 0


if _exists('fork') and not _exists('spawnv') and _exists('execv'):
    P_WAIT = 0
    P_NOWAIT = P_NOWAITO = 1

    def _spawnvef(mode, file, args, env, func):
        pid = fork()
        if not pid:

            try:
                if env is None:
                    func(file, args)
                else:
                    func(file, args, env)
            except:
                _exit(127)

        elif mode == P_NOWAIT:
            return pid

        while 1:
            (wpid, sts) = waitpid(pid, 0)
            if WIFSTOPPED(sts):
                continue
            elif WIFSIGNALED(sts):
                return -WTERMSIG(sts)
            elif WIFEXITED(sts):
                return WEXITSTATUS(sts)
            else:
                raise error, 'Not stopped, signaled or exited???'


    def spawnv(mode, file, args):
        """spawnv(mode, file, args) -> integer

Execute file with arguments from args in a subprocess.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
        return _spawnvef(mode, file, args, None, execv)


    def spawnve(mode, file, args, env):
        """spawnve(mode, file, args, env) -> integer

Execute file with arguments from args in a subprocess with the
specified environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
        return _spawnvef(mode, file, args, env, execve)


    def spawnvp(mode, file, args):
        """spawnvp(mode, file, args) -> integer

Execute file (which is looked for along $PATH) with arguments from
args in a subprocess.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
        return _spawnvef(mode, file, args, None, execvp)


    def spawnvpe(mode, file, args, env):
        """spawnvpe(mode, file, args, env) -> integer

Execute file (which is looked for along $PATH) with arguments from
args in a subprocess with the supplied environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
        return _spawnvef(mode, file, args, env, execvpe)


if _exists('spawnv'):

    def spawnl(mode, file, *args):
        """spawnl(mode, file, *args) -> integer

Execute file with arguments from args in a subprocess.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
        return spawnv(mode, file, args)


    def spawnle(mode, file, *args):
        """spawnle(mode, file, *args, env) -> integer

Execute file with arguments from args in a subprocess with the
supplied environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
        env = args[-1]
        return spawnve(mode, file, args[:-1], env)


if _exists('spawnvp'):

    def spawnlp(mode, file, *args):
        """spawnlp(mode, file, *args, env) -> integer

Execute file (which is looked for along $PATH) with arguments from
args in a subprocess with the supplied environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
        return spawnvp(mode, file, args)


    def spawnlpe(mode, file, *args):
        """spawnlpe(mode, file, *args, env) -> integer

Execute file (which is looked for along $PATH) with arguments from
args in a subprocess with the supplied environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
        env = args[-1]
        return spawnvpe(mode, file, args[:-1], env)

    __all__.extend([
        'spawnlp',
        'spawnlpe',
        'spawnv',
        'spawnve',
        'spawnvp',
        'spawnvpe',
        'spawnl',
        'spawnle'])

if _exists('fork'):
    if not _exists('popen2'):

        def popen2(cmd, mode = 't', bufsize = -1):
            import popen2
            (stdout, stdin) = popen2.popen2(cmd, bufsize)
            return (stdin, stdout)

        __all__.append('popen2')

    if not _exists('popen3'):

        def popen3(cmd, mode = 't', bufsize = -1):
            import popen2
            (stdout, stdin, stderr) = popen2.popen3(cmd, bufsize)
            return (stdin, stdout, stderr)

        __all__.append('popen3')

    if not _exists('popen4'):

        def popen4(cmd, mode = 't', bufsize = -1):
            import popen2
            (stdout, stdin) = popen2.popen4(cmd, bufsize)
            return (stdin, stdout)

        __all__.append('popen4')