/*
* call-seq:
* register_ns(prefix, uri)
*
* Register the namespace with +prefix+ and +uri+.
*/
static VALUE register_ns(VALUE self, VALUE prefix, VALUE uri)
{
xmlXPathContextPtr ctx;
Data_Get_Struct(self, xmlXPathContext, ctx);
xmlXPathRegisterNs( ctx,
(const xmlChar *)StringValuePtr(prefix),
(const xmlChar *)StringValuePtr(uri)
);
return self;
}