Viewing file:  ParsedXPointer.py (3.2 KB) -rw-r--r--
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########################################################################
#
# File Name: XPointer.py
#
# Docs: http://docs.4suite.org/XPointer/XPointer.py.html
#
"""
A Parsed Token that represents a list of XPointers
WWW: http://4suite.org/XPointer e-mail: support@4suite.org
Copyright (c) 2000-2001 Fourthought Inc, USA. All Rights Reserved.
See http://4suite.org/COPYRIGHT for license and copyright information
"""
#import types, string
from Ft.Xml.XPath import CoreFunctions
from Ft.Xml.XPointer import XPtrContext, XPtrException
from Ft.Xml.Domlette import GetAllNs
class BareName:
def __init__(self, name):
self.name = name
def select(self, context):
doc = context.node.rootNode
result = CoreFunctions._FindIds(doc, self.name, [])
if len(result) > 1:
raise Exception("ID must be unique")
elif result:
return result[0].ownerElement
raise XPtrException(XPtrException.SUB_RESOURCE_ERROR)
def pprint(self, indent=''):
print indent + str(self)
def __str__(self):
return '<BareName at %x: %s>' % (id(self), self.name)
def __repr__(self):
return self.name
class ChildSequence:
def __init__(self, sequence):
if type(sequence[0]) != type(1):
self.bareName = sequence[0]
self.sequence = sequence[1:]
else:
self.bareName = None
self.sequence = sequence
def select(self, context):
if self.bareName:
node = self.bareName.select(context)
else:
node = context.node.rootNode
for index in self.sequence:
try:
node = node.childNodes[index]
except IndexError:
raise XPtrException(XPtrException.SUB_RESOURCE_ERROR)
return node
def pprint(self, indent=''):
print indent + str(self)
def __str__(self):
return '<ChildSequence at %x: %s>' % (id(self), repr(self))
def __repr__(self):
result = self.bareName and repr(self.bareName) or ''
for index in self.sequence:
result = result + '/%d' % index
return result
class FullXPtr:
def __init__(self, parts):
self.parts = parts
def select(self, document, contextNode, nss=None):
nss = nss or {}
nss.update(GetAllNs(document))
context = XPtrContext.XPtrContext(document, 1, 1, contextNode, nss)
for part in self.parts:
node_set = part.evaluate(context)
if len(node_set) == 1:
return node_set[0]
elif node_set:
# The scheme found more than 1 node
raise XPtrException(XPtrException.SUB_RESOURCE_ERROR)
# Nothing found, try the next one
# No schemes found an node
raise XPtrException(XPtrException.SUB_RESOURCE_ERROR)
def pprint(self, indent=''):
print indent + str(self)
for part in self.parts:
part.pprint(indent + ' ')
def __str__(self):
return '<FullXPtr at %x: %s>' % (id(self), repr(self))
def __repr__(self):
return reduce(lambda result, part:
result + ' ' + repr(part),
self.parts, '')
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