/**
 * 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.samples.transforms;

import org.apache.xml.security.signature.XMLSignatureInput;
import org.apache.xml.security.transforms.Transforms;

/**
 * This class demonstrates the use of a Transform for XSLT. The
 * <CODE>xsl:stylesheet</CODE> is directly embedded in the <CODE>ds:Transform</CODE>,
 * so the {@link Transform} object is created by using the Element.
 *
 * @author Christian Geuer-Pollmann
 * @version %I%, %G%
 */
public class SampleTransformXPath {

    /**
     * Method main
     *
     * @param args
     * @throws Exception
     */
    public static void main(String args[]) throws Exception {
        String transformStr =
            "<?xml version='1.0'?>\n"
            + "<Transforms xmlns='http://www.w3.org/2000/09/xmldsig#'>\n"
            + "<Transform Algorithm='http://www.w3.org/TR/1999/REC-xpath-19991116'>\n"
            // + "   <ds:XPath xmlns:match='http://sfdfg/'>(self::match:Order | self::text()[string(parent::e)=\"Hello,  world!\"])</ds:XPath>\n"
            // + "   <ds:XPath>//@*</ds:XPath>\n"
            + "   <!-- Exclude all signatures -->\n"
            // + "   <ds:XPath xmlns:ds='http://www.w3.org/2000/09/xmldsig#'>not(ancestor-or-self::ds:Signature)</ds:XPath>\n"
            + "   <ds:XPath xmlns:ds='http://www.w3.org/2000/09/xmldsig#'>self::text()[ancestor-or-self::node()=/Class/e[1]]</ds:XPath>\n"
            + "</Transform>\n"
            + "</Transforms>\n"
            ;

        String inputStr =
            "<?xml version=\"1.0\"?>" + "\n"
            + "<Class>" + "\n"
            + "   <e>Hello, <!-- comment --> world!</e>" + "\n"
            + "   <Order Name='TINAMIFORMES' xmlns='http://sfdfg/'>" + "\n"
            + "      <Family Name='TINAMIDAE'>" + "\n"
            + "         <Species Scientific_Name='Crypturellus boucardi'>Slaty-breasted Tinamou.</Species>" + "\n"
            + "      </Family>" + "\n"
            + "   </Order>" + "\n"
            + "   <Order Name='PODICIPEDIFORMES'/>" + "\n"
            + "<Signature Id='SignatureToBeOmitted' xmlns='http://www.w3.org/2000/09/xmldsig#'>" + "\n"
            + "     <SignedInfo>" + "\n"
            + "       <Reference>" + "\n"
            + "         <Transforms>" + "\n"
            + "           <Transform Algorithm='http://www.w3.org/2000/09/xmldsig#enveloped-signature' />" + "\n"
            //       + "           <Transform Algorithm='http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments' />" + "\n"
            + "         </Transforms>" + "\n"
            + "       </Reference>" + "\n"
            + "     </SignedInfo>" + "\n"
            + "   </Signature>"
            + "</Class>" + "\n"
            ;
        
        org.apache.xml.security.Init.init();
        javax.xml.parsers.DocumentBuilderFactory dbf =
            javax.xml.parsers.DocumentBuilderFactory.newInstance();

        dbf.setNamespaceAware(true);

        javax.xml.parsers.DocumentBuilder db = dbf.newDocumentBuilder();
        org.w3c.dom.Document doc =
            db.parse(new java.io.ByteArrayInputStream(transformStr.getBytes()));

        String BaseURI = null;
        Transforms transforms = new Transforms(doc.getDocumentElement(), BaseURI);

        XMLSignatureInput input = new XMLSignatureInput(inputStr.getBytes());

        // input.setCanonicalizerURI(Canonicalizer.ALGO_ID_C14N_WITH_COMMENTS);

        XMLSignatureInput result = transforms.performTransforms(input);

        System.out.println(new String(result.getBytes()));
    }
    
}