Thank you both. I have solved the problem thus:
void CXbrl::RegisterNamespaces(xmlDocPtr pXmlDoc,
xmlXPathContextPtr pXPathCtx)
{
m_mNamespaces.clear();
RegisterNamespaces(pXmlDoc->children, pXPathCtx);
}
void CXbrl::RegisterNamespaces(xmlNodePtr pNode,
xmlXPathContextPtr pXPathCtx)
{
xmlNodePtr pCurNode = NULL;
for (pCurNode = pNode; pCurNode; pCurNode = pCurNode->next)
{
if (pCurNode)
{
xmlNsPtr pNs = pCurNode->nsDef;
while (pNs)
{
xmlXPathRegisterNs(pXPathCtx, pNs->prefix, pNs->href);
// Add namespace to map if not already added:
string sPrefix = XmlChar2String(pNs->prefix);
string sHref = XmlChar2String(pNs->href);
NAMESPACES_TYPE::iterator pos = m_mNamespaces.find(sHref);
if (pos == m_mNamespaces.end())
{ // we will be searching on HREFs:
m_mNamespaces.insert(NAMESPACES_TYPE::value_type(sHref, sPrefix));
}
pNs = pNs->next;
}
}
RegisterNamespaces(pCurNode->children, pXPathCtx);
}
}
--
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