soup.py

import gettext
_ = gettext.gettext

from BeautifulSoup import BeautifulSoup, Declaration, Comment, Tag

import _base

class TreeWalker(_base.NonRecursiveTreeWalker):
    def getNodeDetails(self, node):
        if isinstance(node, BeautifulSoup): # Document or DocumentFragment
            return (_base.DOCUMENT,)

        elif isinstance(node, Declaration): # DocumentType
            #Slice needed to remove markup added during unicode conversion
            return _base.DOCTYPE, unicode(node.string)[2:-1]

        elif isinstance(node, Comment):
            return _base.COMMENT, unicode(node.string)[4:-3]

        elif isinstance(node, unicode): # TextNode
            return _base.TEXT, node

        elif isinstance(node, Tag): # Element
            return _base.ELEMENT, node.name, \
                dict(node.attrs).items(), node.contents
        else:
            return _base.UNKNOWN, node.__class__.__name__

    def getFirstChild(self, node):
        return node.contents[0]

    def getNextSibling(self, node):
        return node.nextSibling

    def getParentNode(self, node):
        return node.parent