CharArray getPrefix(CharSequence uri, int count) {
for (int i = count; --i >= 0; ) {
CharArray prefix = _prefixes[i];
CharArray namespace = _namespaces[i];
if (namespace.equals(uri)) { // Find matching uri.
// Checks that the prefix has not been overwriten after being set.
boolean isPrefixOverwritten = false;
for (int j = i + 1; j < count; j++) {
if (prefix.equals(_prefixes[j])) {
isPrefixOverwritten = true;
break;
}
}
if (!isPrefixOverwritten) return prefix;
}
}
return null; // Not bound.
}
// Implements NamespaceContext
public CharArray getPrefix(CharSequence uri) {
if (uri == null) throw new IllegalArgumentException("null namespace URI not allowed");
return _defaultNamespace.equals(uri)
? _defaultNsPrefix
: getPrefix(uri, _namespacesCount[_nesting]);
}