/* Copyright 2002, 2003, 2018 Elliotte Rusty Harold
This library is free software; you can redistribute it and/or modify
it under the terms of version 2.1 of the GNU Lesser General Public
License as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see
* Demonstrates the removal of elements and * their content from a document. *
* * @author Elliotte Rusty Harold * @version 1.3.0 * */ public class XHTMLPurifier { public final static String XHTML_NAMESPACE = "http://www.w3.org/1999/xhtml"; public static void main(String[] args) { if (args.length <= 0) { System.out.println("Usage: java nu.xom.samples.XHTMLPurifier URL"); return; } try { Builder parser = new Builder(); Document doc = parser.build(args[0]); Element root = doc.getRootElement(); if (root.getNamespaceURI().equals(XHTML_NAMESPACE)) { strip(root); } else { System.out.println(args[0] + " does not appear to be an XHTML document"); return; } System.out.println(doc.toXML()); } catch (ParsingException ex) { System.out.println(args[0] + " is not well-formed."); System.out.println(ex.getMessage()); } catch (IOException ex) { System.out.println( "Due to an IOException, the parser could not read " + args[0] ); } } public static void strip(Element element) { if (element.getNamespaceURI().equals(XHTML_NAMESPACE)) { // Strip out non XHTML attributes for (int i = 0; i < element.getAttributeCount(); i++) { Attribute attribute = element.getAttribute(i); if (!"".equals(attribute.getNamespaceURI())) { if (!"xml".equals(attribute.getNamespacePrefix())) { attribute.detach(); } } } // Strip out additional namespaces for (int i = 0; i < element.getNamespaceDeclarationCount(); i++) { String prefix = element.getNamespacePrefix(i); element.removeNamespaceDeclaration(prefix); } for (Element child : element.getChildElements()) { strip(child); } } else { element.detach(); } } }