You have to create and register a "result value tree" by calling xsltCreateRVT
and xsltRegisterLocalRVT, then add the nodes you want to return to that tree.
Have a look at functions like exsltStrTokenizeFunction to see how it works:
https://gitlab.gnome.org/GNOME/libxslt/-/blob/master/libexslt/strings.c
Hope that helps,
Nick
On 05/10/2021 12:30, Андрей Олешкевич via xslt wrote:
I am trying to create an xslt extension function for libxslt (c++). My
extension function takes a string as input, then this string is parsed by xml
parser, and the function returns this parsed xml. I return value by this
expression:
void fnParse(xmlXPathParserContextPtr ctx, int nargs) { ...
xmlXPathReturnNodeSet(ctx, xmlXPathNodeSetCreate(node)); }
But I have found that libxslt does not free node memory after use. It free
xmlNodeSet, but not free the node which is stored in this nodeset. Perhaps I
missed something important. What is the correct way to return an XML node in
the extension function?
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