Viewing file:  XsltContext.py (3.59 KB) -rw-r--r--
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########################################################################
# $Header: /var/local/cvsroot/4Suite/Ft/Xml/Xslt/XsltContext.py,v 1.13 2003/09/08 21:05:04 mbrown Exp $
"""
Context and state information for XSLT processing
Copyright 2003 Fourthought, Inc. (USA).
Detailed license and copyright information: http://4suite.org/COPYRIGHT
Project home, documentation, distributions: http://4suite.org/
"""
import Exslt, BuiltInExtFunctions
from Ft.Lib.Uri import UriDict
from Ft.Xml import EMPTY_NAMESPACE
from Ft.Xml.XPath import Context, Util, RuntimeException
from Ft.Xml.Xslt import XsltFunctions
#NOTE: Some of the state information maintained here would probably be better
#managed by the processor, but until Python pre-GC support is phased out,
#the current arrangement will have to do
class XsltContext(Context.Context):
functions = Context.Context.functions.copy()
functions.update(XsltFunctions.CoreFunctions)
functions.update(Exslt.ExtFunctions)
functions.update(BuiltInExtFunctions.ExtFunctions)
def __init__(self,
node,
position=1,
size=1,
currentNode=None,
varBindings=None,
processorNss=None,
stylesheet=None,
processor=None,
mode=None,
extModuleList = None,
extFunctionMap = None,
):
Context.Context.__init__(self,
node,
position,
size,
varBindings,
processorNss,
extModuleList,
extFunctionMap
)
self.currentNode = currentNode
self.stylesheet = stylesheet
self.mode = mode
self.processor = processor
self.documents = UriDict()
self.rtfs = []
self.currentInstruction = None
self.recursiveParams = None
return
def addDocument(self, document, documentUri=None):
Context.Context.addDocument(self, document)
# RTF documents do not have a documentUri
if documentUri:
self.documents[documentUri] = document
return
def splitQName(self, qname):
if not qname: return None
index = qname.find(':')
if index != -1:
split = (qname[:index], qname[index+1:])
else:
split = (None, qname)
return split
def expandQName(self, qname):
if not qname: return None
prefix, local = self.splitQName(qname)
if prefix:
try:
expanded = (self.processorNss[prefix], local)
except KeyError:
raise RuntimeException(RuntimeException.UNDEFINED_PREFIX, prefix)
else:
expanded = (EMPTY_NAMESPACE, local)
return expanded
def setProcessState(self, execNode):
self.processorNss = execNode.namespaces
self.currentInstruction = execNode
return
def clone(self):
return XsltContext(self.node, self.position, self.size,
self.currentNode, self.varBindings.copy(),
self.processorNss, self.stylesheet,
self.processor, self.mode)
def __repr__(self):
return '<XsltContext at %x: node %s, position %d, size %d, mode %r>' % (
id(self),
repr(self.node),
self.position,
self.size,
self.mode
)
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