/usr/share/pyshared/swap/cwm_os.py is in python-swap 1.2.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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$Id: cwm_os.py,v 1.12 2007/06/26 02:36:15 syosi Exp $
Operating systems built-ins for cwm
http://www.w3.org/2000/10/swap/string.py
See cwm.py and the os module in python
"""
import os
from term import LightBuiltIn, Function, ReverseFunction
from diag import verbosity, progress
import uripath
OS_NS_URI = "http://www.w3.org/2000/10/swap/os#"
###############################################################################################
#
# O P E R A T I N G S Y T E M B U I L T - I N s
#
#
# Light Built-in classes
# Read Operating sytem environment lookup - read-only
#
# Not fatal if not defined
class BI_environ(LightBuiltIn, Function):
def evaluateObject(self, subj_py):
if isString(subj_py): return os.environ.get(subj_py, None)
progress("os:environ input is not a string: "+`subj_py`)
class BI_baseAbsolute(LightBuiltIn, Function):
"""The baseAbsolute function generates an absolute URIref from a string,
interpreting the string as a a relative URIref relative to the current
process base URI (typically, current working directory).
It is not a reverse function, because sereral different relativisations
exist for the same absolute URI. See uripath.py."""
def evaluateObject(self, subj_py):
if verbosity() > 80: progress("os:baseAbsolute input:"+`subj_py`)
if isString(subj_py):
return uripath.join(uripath.base(), subj_py)
progress("Warning: os:baseAbsolute input is not a string: "+`subj_py`)
class BI_baseRelative(LightBuiltIn, Function, ReverseFunction):
"""The baseRelative of a URI is its expression relation to the process base URI.
It is 1:1, being an arbitrary cannonical form.
It is a reverse function too, as you can always work the other way."""
def evaluateObject(self, subj_py):
if verbosity() > 80: progress("os:baseRelative input:"+`subj_py`)
if isString(subj_py):
return uripath.refTo(uripath.base(), subj_py)
progress("Warning: os:baseRelative input is not a string: "+`subj_py`)
def evaluateSubject(self, subj_py):
return BI_baseAbsolute.evaluateObject(self, subj_py)
# Command line argument: read-only
# The command lines are passed though cwm using "--with" and into the RDFStore when init'ed.
# Not fatal if not defined
class BI_argv(LightBuiltIn, Function):
def evaluateObject(self, subj_py):
if verbosity() > 80: progress("os:argv input:"+`subj_py`)
if self.store.argv: # Not None or []. was also: isString(subj_py) and
try:
argnum = int(subj_py) -1
except ValueError:
if verbosity() > 30:
progress("os:argv input is not a number: "+`subj_py`)
return None
if argnum < len(self.store.argv):
return self.store.argv[argnum]
def isString(x):
# in 2.2, evidently we can test for isinstance(types.StringTypes)
return type(x) is type('') or type(x) is type(u'')
# Register the string built-ins with the store
def register(store):
str = store.symbol(OS_NS_URI[:-1])
str.internFrag("environ", BI_environ)
str.internFrag("baseRelative", BI_baseRelative)
str.internFrag("baseAbsolute", BI_baseAbsolute)
str.internFrag("argv", BI_argv)
# ends
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