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Re^5: copyCurrentNode in XML::LibXML::Reader will add xmlns attribute ( setNamespaceDeclURI )

by beech (Parson)
on Sep 20, 2017 at 18:18 UTC ( [id://1199773]=note: print w/replies, xml ) Need Help??


in reply to Re^4: copyCurrentNode in XML::LibXML::Reader will add xmlns attribute ( setNamespaceDeclURI )
in thread copyCurrentNode in XML::LibXML::Reader will add xmlns attribute

Anyone can explain why the namespace isn't changed?

Hi,

Its some kind of bug, if I were setup to compile libxml2 I'd narrow it down with this addition to LibXML.xs

int _setNamespaceNULL(self ) SV * self PREINIT: xmlNodePtr node = PmmSvNode(self); INIT: if ( node == NULL ) { croak( "lost node" ); } CODE: xmlSetNs(node, NULL); RETVAL = 1; OUTPUT: RETVAL

Replies are listed 'Best First'.
Re^6: copyCurrentNode in XML::LibXML::Reader will add xmlns attribute ( setNamespaceDeclURI )
by choroba (Cardinal) on Sep 30, 2017 at 09:59 UTC
    My knowledge of C is less than basic (yes, I used Basic a lot as a child).

    But, I was able to compile the following and verify that libxml2 is able to clear the namespace, so the problem must lie in the XS land:

    #include <stdio.h> #include <libxml/tree.h> #include <libxml/parser.h> #include <libxml/xpath.h> #include <libxml/xpathInternals.h> int main (int argc, char **argv) { xmlInitParser(); xmlDoc *document; document = xmlParseDoc("<r xmlns:p='http://p.p'><p:a>HERE</p:a></r>" +); xmlXPathContext *xpc; xpc = xmlXPathNewContext(document); xmlXPathRegisterNs(xpc, "p", "http://p.p"); xmlXPathObject *xp; xp = xmlXPathEvalExpression("/r/p:a", xpc); if (xp == NULL) return(1); xmlNodeSet *nodes; nodes = xp->nodesetval; xmlNode *node; node = nodes->nodeTab[0]; xmlSetNs(node, NULL); xmlChar *s; int size; xmlDocDumpMemory(document, &s, &size); char *string; string = (char *)s; printf("%s", string); return(0); }

    Outputs:

    <?xml version="1.0"?> <r xmlns:p="http://p.p"><a>HERE</a></r>

    ($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,
Re^6: copyCurrentNode in XML::LibXML::Reader will add xmlns attribute ( setNamespaceDeclURI )
by choroba (Cardinal) on Oct 01, 2017 at 20:09 UTC
    Should work now.

    ($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

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