/usr/lib/python2.7/dist-packages/csa/conngen.py is in python-csa 0.1.0-1.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# This file is part of the Connection-Set Algebra (CSA).
# Copyright (C) 2010,2011,2012 Mikael Djurfeldt
#
# CSA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# CSA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
try:
from nineml.connection_generator import ConnectionGenerator
HAVE_CG=True
except ImportError:
HAVE_CG=False
if HAVE_CG:
from csaobject import from_xml
from elementary import arity, cross, partition
from closure import Closure
class CSAConnectionGenerator (ConnectionGenerator):
def __init__ (self, cset):
self.cset = cset
self.generator = False
@property
def arity (self):
return arity (self.cset)
def setMask (self, mask):
self.setMasks ([mask], 0)
def setMasks (self, masks, local):
csaMasks = map (CSAConnectionGenerator.makeMask, masks)
self.generator = partition (self.cset, csaMasks, local)
@staticmethod
def makeMask (mask):
return cross (CSAConnectionGenerator.makeIList (mask.sources),
CSAConnectionGenerator.makeIList (mask.targets))
@staticmethod
def makeIList (iset):
if iset.skip == 1:
return iset.intervals
else:
ls = []
for ivl in iset.intervals:
for i in xrange (ivl[0], ivl[1] + 1, iset.skip):
ls.append ((i, i))
return ls
def __len__ (self):
return self.generator.__len__ ()
def __iter__ (self):
return self.generator.__iter__ ()
def connectionGeneratorClosureFromXML (element):
cset = from_xml (element)
if isinstance (cset, Closure):
return lambda *args: CSAConnectionGenerator (cset (*args))
else:
return lambda: CSAConnectionGenerator (cset)
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