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//usr/lib/python2.4/site-packages/_xmlplus/dom/NamedNodeMap.py
######################################################################## # # File Name: NamedNodeMap.py # # """ WWW: http://4suite.com/4DOM e-mail: support@4suite.com Copyright (c) 2000 Fourthought Inc, USA. All Rights Reserved. See http://4suite.com/COPYRIGHT for license and copyright information """ import UserDict class _NamedNodeMapIter: """Iterator class for Python 2.2. The iterator function is .next, the stop-iterator element is the iterator itself.""" def __init__(self,map): self.pos = 0 self.map = map def next(self): try: res = self.map[self.pos] self.pos = self.pos + 1 return res except IndexError: return self from xml.dom import Node from xml.dom import EMPTY_NAMESPACE from xml.dom import NoModificationAllowedErr from xml.dom import NotFoundErr from xml.dom import NotSupportedErr from xml.dom import WrongDocumentErr from xml.dom import InuseAttributeErr from xml.dom import NamespaceErr class NamedNodeMap(UserDict.UserDict): def __init__(self, ownerDoc=None): UserDict.UserDict.__init__(self) self._ownerDocument = ownerDoc self._positions = [] ### Attribute Access Methods ### def __getattr__(self, name): if name == 'length': return len(self) return getattr(NamedNodeMap, name) def __setattr__(self, name, value): if name == 'length': raise NoModificationAllowedErr() self.__dict__[name] = value ### Attribute Methods ### def _get_length(self): return len(self) ### Methods ### def item(self, index): if 0 <= index < len(self): return self[self._positions[int(index)]] return None def getNamedItem(self, name): try: return self[name] except KeyError: # fall-back to namespace API return self.get((EMPTY_NAMESPACE, name)) def removeNamedItem(self, name): old = self.get(name) if not old: # fall-back to namespace API return self.removeNamedItemNS(EMPTY_NAMESPACE, name) del self[name] self._positions.remove(name) return old def setNamedItem(self, arg): if self._ownerDocument != arg.ownerDocument: raise WrongDocumentErr() if arg.nodeType == Node.ATTRIBUTE_NODE and arg.ownerElement != None: raise InuseAttributeErr() name = arg.nodeName retval = self.get(name) UserDict.UserDict.__setitem__(self, name, arg) if not retval: retval = self.get((EMPTY_NAMESPACE, name)) if retval: self._positions.remove((EMPTY_NAMESPACE, name)) del self[(EMPTY_NAMESPACE, name)] self._positions.append(name) return retval def getNamedItemNS(self, namespaceURI, localName): if namespaceURI == '': raise NamespaceErr("Use None instead of '' for empty namespace") return self.get((namespaceURI, localName)) def setNamedItemNS(self, arg): if self._ownerDocument != arg.ownerDocument: raise WrongDocumentErr() if arg.nodeType == Node.ATTRIBUTE_NODE and arg.ownerElement != None: raise InuseAttributeErr() if arg.namespaceURI == '': raise NamespaceErr("Use None instead of '' for empty namespace") name = (arg.namespaceURI, arg.localName) retval = self.get(name) UserDict.UserDict.__setitem__(self, name, arg) if not retval: self._positions.append(name) return retval def removeNamedItemNS(self, namespaceURI, localName): if namespaceURI == '': raise NamespaceErr("Use None instead of '' for empty namespace") name = (namespaceURI, localName) old = self.get(name) if not old: raise NotFoundErr() del self[name] self._positions.remove(name) return old ### Overridden Methods ### def __getitem__(self, index): if type(index) == type(0): index = self._positions[index] return UserDict.UserDict.__getitem__(self, index) def __setitem__(self, index, item): raise NotSupportedErr() def __iter__(self): i = _NamedNodeMapIter(self) return iter(i.next, i) def __repr__(self): st = "<NamedNodeMap at %x: {" % (id(self)) for k in self.keys(): st = st + repr(k) + ': ' + repr(self[k]) + ', ' if len(self): st = st[:-2] return st + '}>' ### Internal Methods ### def _4dom_setOwnerDocument(self, newOwner): self._ownerDocument = newOwner def _4dom_clone(self, owner): nnm = self.__class__(owner) for item in self: if item.localName: nnm.setNamedItemNS(item._4dom_clone(owner)) else: nnm.setNamedItem(item._4dom_clone(owner)) return nnm