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########################################################################
#
# File Name: XsltContext.py
#
#
"""
Provide contextual and state information wrt the transform processing
WWW: http://4suite.com/4XSLT e-mail: support@4suite.com
Copyright (c) 1999-2001 Fourthought Inc, USA. All Rights Reserved.
See http://4suite.com/COPYRIGHT for license and copyright information
"""
from xml.xpath import Context, Util
from xml.xslt import XsltFunctions, ReleaseNode
#Note: Some of the state information maintained here would probably be better
#managed by the processor, but until Python is less prone to circular reference
#Traps, the current arrangement will have to do
class XsltContext(Context.Context):
functions = Context.Context.functions.copy()
functions.update(XsltFunctions.ExtFunctions)
def __init__(self,
node,
position=1,
size=1,
currentNode=None,
varBindings=None,
processorNss=None,
stylesheet=None,
processor=None,
mode=None):
Context.Context.__init__(self,
node,
position,
size,
varBindings,
processorNss)
self.currentNode = currentNode
self.stylesheet = stylesheet
self.mode = mode
self.processor = processor
self.currentInstruction = None
self.documents = {}
self.rtfs = []
return
def copyNodePosSizeMode(self):
return (self.node, self.position, self.size, self.mode)
def setNodePosSizeMode(self, args):
self.node = args[0]
self.position = args[1]
self.size = args[2]
self.mode = args[3]
def setStylesheet(self, args):
self.varBindings = args[0]
self.processorNss.update(args[1])
self.stylesheet = args[2]
def copyStylesheet(self):
return (self.varBindings, self.processorNss, self.stylesheet)
def release(self):
Util.FreeDocumentIndex(self.node)
for doc in self.documents.values():
Util.FreeDocumentIndex(doc)
ReleaseNode(doc)
try:
for rtf in self.rtfs:
ReleaseNode(rtf)
except:
import traceback
traceback.print_exc()
pass
self.documents = None
self.rtfs = None
return
def set(self,d):
d['documents'].update(self.documents)
d['rtfs'] = self.rtfs
Context.Context.set(self,d)
def clone(self):
return XsltContext(self.node, self.position, self.size,
self.currentNode, self.varBindings,
self.processorNss, self.stylesheet,
self.processor, self.mode)
def __repr__(self):
return '<XsltContext at %x: Node=%s, Position="%d", Size="%d">' % (
id(self),
repr(self.node),
self.position,
self.size
)
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