| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.xml.security.staxutils; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import javax.xml.namespace.NamespaceContext; |
| |
| import org.w3c.dom.Attr; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.NamedNodeMap; |
| import org.w3c.dom.Node; |
| |
| public class W3CNamespaceContext implements NamespaceContext { |
| private Element currentNode; |
| private NamespaceContext outNamespaceContext; |
| |
| public W3CNamespaceContext() { |
| } |
| public W3CNamespaceContext(Element el) { |
| currentNode = el; |
| } |
| |
| public void setOutNamespaceContext(NamespaceContext context) { |
| outNamespaceContext = context; |
| } |
| |
| public String getNamespaceURI(String prefix) { |
| String name = prefix; |
| if (name.length() == 0) { |
| name = "xmlns"; |
| } else { |
| name = "xmlns:" + prefix; |
| } |
| |
| return getNamespaceURI(currentNode, name); |
| } |
| |
| private String getNamespaceURI(Element e, String name) { |
| if (e == null) { |
| return null; |
| } |
| // check the outside namespace URI |
| if (outNamespaceContext != null) { |
| String result = outNamespaceContext.getNamespaceURI(name); |
| if (result != null) { |
| return result; |
| } |
| } |
| |
| Attr attr = e.getAttributeNode(name); |
| if (attr == null) { |
| Node n = e.getParentNode(); |
| if (n instanceof Element && n != e) { |
| return getNamespaceURI((Element)n, name); |
| } |
| } else { |
| return attr.getValue(); |
| } |
| |
| return null; |
| } |
| |
| public String getPrefix(String uri) { |
| return getPrefix(currentNode, uri); |
| } |
| |
| private String getPrefix(Element e, String uri) { |
| if (e == null) { |
| return null; |
| } |
| // check the outside namespace URI |
| if (outNamespaceContext != null) { |
| String result = outNamespaceContext.getPrefix(uri); |
| if (result != null) { |
| return result; |
| } |
| } |
| |
| NamedNodeMap attributes = e.getAttributes(); |
| if (attributes != null) { |
| for (int i = 0; i < attributes.getLength(); i++) { |
| Attr a = (Attr)attributes.item(i); |
| |
| String val = a.getValue(); |
| if (val != null && val.equals(uri)) { |
| String name = a.getLocalName(); |
| if ("xmlns".equals(name)) { |
| return ""; |
| } |
| return name; |
| } |
| } |
| } |
| |
| Node n = e.getParentNode(); |
| if (n instanceof Element && n != e) { |
| return getPrefix((Element)n, uri); |
| } |
| |
| return null; |
| } |
| |
| public Iterator<String> getPrefixes(String uri) { |
| List<String> prefixes = new ArrayList<>(); |
| |
| String prefix = getPrefix(uri); |
| if (prefix != null) { |
| prefixes.add(prefix); |
| } |
| |
| return prefixes.iterator(); |
| } |
| |
| public Element getElement() { |
| return currentNode; |
| } |
| |
| public void setElement(Element node) { |
| this.currentNode = node; |
| } |
| } |