Updated monkey patch

minidom.py

"""Dynamically patch :mod:`xml.dom.minidom`'s attribute value escaping.

:meth:`xml.dom.minidom.Element.setAttribute` doesn't preform some
character escaping (see the `Python bug`_ and `XML specs`_).
Importing this module applies the suggested patch dynamically.

.. _Python bug: http://bugs.python.org/issue5752
.. _XML specs:
  http://www.w3.org/TR/2000/WD-xml-c14n-20000119.html#charescaping
"""

from xml.dom import Node
import xml.dom.minidom

def _write_data(writer, data, isAttrib=False):
    "Writes datachars to writer."
    if data:
        if isAttrib:
            data = data.replace("\r", "
").replace("\n", "
")
            data = data.replace("\t", "	")
        else: # Otherwise we're overwriting the corrections above
            data = data.replace("&", "&amp;").replace("<", "&lt;"). \
                replace("\"", "&quot;").replace(">", "&gt;")
        writer.write(data)
xml.dom.minidom._write_data = _write_data

def writexml(self, writer, indent="", addindent="", newl=""):
    """Write an XML element to a file-like object
    Write the element to the writer object that must provide
    a write method (e.g. a file or StringIO object).
    """
    # indent = current indentation
    # addindent = indentation to add to higher levels
    # newl = newline string
    writer.write(indent+"<" + self.tagName)

    attrs = self._get_attributes()

    for a_name in attrs.keys():
        writer.write(" %s=\"" % a_name)
        _write_data(writer, attrs[a_name].value, isAttrib=True)
        writer.write("\"")
    if self.childNodes:
        writer.write(">")
        if (len(self.childNodes) == 1 and
            self.childNodes[0].nodeType in (
                    Node.TEXT_NODE, Node.CDATA_SECTION_NODE)):
            self.childNodes[0].writexml(writer, '', '', '')
        else:
            writer.write(newl)
            for node in self.childNodes:
                node.writexml(writer, indent+addindent, addindent, newl)
            writer.write(indent)
        writer.write("</%s>%s" % (self.tagName, newl))
    else:
        writer.write("/>%s"%(newl))
xml.dom.minidom.Element.writexml = writexml