Re: [xml] issue with libxml2, python and entities

On Sat, Jan 27, 2007 at 12:34:21AM +0000, Mike Kneller wrote:
I am not sure if I have located a bug or not....

Using Python (2.4) and libxml2.2.6.22

When I load an document containing an entity, if I attempt to read  
the value of a node containing an entity, I get the text content and  
the entity disappears.
In the following example, when looking at root.content I would expect  
to see '©2007', instead all I get is '2007'.

I was advised on the #XML IRC channel to construct a simple test  
case, so here it is:

  On IRC you said the entity was defined in the internal subset, it's not

File 1: test.xml

<?xml version="1.0"?>
<!DOCTYPE content [
    "-//W3C//ENTITIES Latin 1 for XHTML//EN"

  libxml2 doesn't load externl subset by default,

File 2:

import libxml2
sourcedoc = libxml2.parseFile( 'test.xml' )
root = sourcedoc.getRootElement()
print root.serialize()
print root.content

  So your content element has 2 children an entity reference
to copy whose content is unknown and the text node with "2007"

Reading the source for, I find the following:
     def getContent(self):
         """Read the value of a node, this can be either the text
            carried directly by this node if it's a TEXT node or the
            aggregate string of the values carried by this node
            child's (TEXT and ENTITY_REF). Entity references are
            substituted. """
         ret = libxml2mod.xmlNodeGetContent(self._o)
         return ret

Which in my (admittedly limited) understanding I would have thought  
would return the translated entity as well as the text when I examine  

Is this a bug, or am I doing something wrong?

  Not askling to load the external subset, use readFile and pass the
XML_PARSE_DTDLOAD option. It should work even with the ancient version
2.6.22 , but please firtst upgrade first in case of problem.


Red Hat Virtualization group
Daniel Veillard      | virtualization library
veillard redhat com  | libxml GNOME XML XSLT toolkit | Rpmfind RPM search engine

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