/**
* Recursively finds the uri for the specified prefix.
*
* @param pref prefix
* @return uri
*/
public final byte[] uri(final byte[] pref) {
final Atts at = namespaces();
if (at != null) {
final byte[] s = at.value(pref);
if (s != null) return s;
final ANode n = parent();
if (n != null) return n.uri(pref);
}
return pref.length == 0 ? Token.EMPTY : null;
}
/**
* Returns a copy of the namespace hierarchy.
*
* @param sc static context (can be {@code null})
* @return namespaces
*/
public final Atts nsScope(final StaticContext sc) {
final Atts ns = new Atts();
ANode node = this;
do {
final Atts nsp = node.namespaces();
if (nsp != null) {
for (int a = nsp.size() - 1; a >= 0; a--) {
final byte[] key = nsp.name(a);
if (!ns.contains(key)) ns.add(key, nsp.value(a));
}
}
node = node.parent();
} while (node != null && node.type == NodeType.ELM);
if (sc != null) sc.ns.inScope(ns);
return ns;
}