Hello,
I use libxml2, libxslt, and libxml2-python. In some tasks I need to
redefine the default entity loader. My application runs in multithreaded
mode, and each thread must have a different loader . Also imported and
included stylesheets must be loaded with the same loader as their parent
stylesheet. To implement this, I did the following:
1) added new `loaderId' slot in libxml2::include/libxml/tree.h:_xmlDoc
structure;
2) added new `loaderId' slot in libxml2::include/libxml/parser.h:
_xmlParserCtxt;
3) modified function `xsltDocDefaultLoaderFunc' changing the type of the
fourth argument to `xsltStylesheetPtr ctxt' and added the following:
pctxt = xmlNewParserCtxt();
/* hacked */
if (ctxt) {
par = ctxt->parent;
loaderId = ctxt->doc->loaderId;
pctxt->loaderId = doc->loaderId = (xsltStylesheet
*)ctxt->doc->loaderId;
}
to `xsltDocDefaultLoaderFunc' (and modified every call of this function to
pass the right argument);
4) added accessors for `loaderId' to the python wrappers in `parserCtxt'
and `xmlDoc' classes;
After that, I get the `segmentation fault' somewhere (I really don't know
where, because it changes depending on where I place the `loaderId' slot
in '_xmlParserCtxt').
How can I implement what I needed and what is happening when I add a new
slot in _xmlParserCtxt? There was a similar trouble when I added
`loaderId' as the first slot to _xmlDoc, and I fixed it by moving it to
the bottom of the structure. The problem was that `xmlElementType' must be
the second slot. But there are no similar restrictions in `_xmlParserCtxt'.
Lilith
--
http://www.renderx.net/
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