/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache\@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation, and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/*
 * $Id: CreateDOMDocument.cpp,v 1.15 2003/02/05 18:53:22 tng Exp $
 */

/*
 * This sample illustrates how you can create a DOM tree in memory.
 * It then prints the count of elements in the tree.
 */


// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/dom/DOM.hpp>
#include <iostream.h>

XERCES_CPP_NAMESPACE_USE

// ---------------------------------------------------------------------------
//  This is a simple class that lets us do easy (though not terribly efficient)
//  trancoding of char* data to XMLCh data.
// ---------------------------------------------------------------------------
class XStr
{
 public :
  // -----------------------------------------------------------------------
  //  Constructors and Destructor
  // -----------------------------------------------------------------------
  XStr(const char* const toTranscode)
  {
    // Call the private transcoding method
    fUnicodeForm = XMLString::transcode(toTranscode);
  }

  ~XStr()
  {
    XMLString::release(&fUnicodeForm);
  }


  // -----------------------------------------------------------------------
  //  Getter methods
  // -----------------------------------------------------------------------
  const XMLCh* unicodeForm() const
  {
    return fUnicodeForm;
  }

 private :
  // -----------------------------------------------------------------------
  //  Private data members
  //
  //  fUnicodeForm
  //      This is the Unicode XMLCh format of the string.
  // -----------------------------------------------------------------------
  XMLCh*   fUnicodeForm;
};

#define X(str) XStr(str).unicodeForm()


// ---------------------------------------------------------------------------
//  main
// ---------------------------------------------------------------------------

int main(int argC, char* argV[])
{
  // Initialize the XML4C2 system.
  try
    {
      XMLPlatformUtils::Initialize();
    }

  catch(const XMLException& toCatch)
    {
      char *pMsg = XMLString::transcode(toCatch.getMessage());
      cerr << "Error during Xerces-c Initialization.\n"
           << "  Exception message:"
           << pMsg;
      XMLString::release(&pMsg);
      return 1;
    }

  // Watch for special case help request
  if (argC > 1)
    {
      cout << "\nUsage:\n"
        "    CreateDOMDocument\n\n"
        "This program creates a new DOM document from scratch in memory.\n"
        "It then prints the count of elements in the tree.\n"
           <<  endl;
      XMLPlatformUtils::Terminate();
      return 1;
    }

  {
    //  Nest entire test in an inner block.
    //  The tree we create below is the same that the XercesDOMParser would
    //  have created, except that no whitespace text nodes would be created.

    // <company>
    //     <product>Xerces-C</product>
    //     <category idea='great'>XML Parsing Tools</category>
    //     <developedBy>Apache Software Foundation</developedBy>
    // </company>

    DOMImplementation* impl =  DOMImplementationRegistry::getDOMImplementation(X("Core"));

    DOMDocument* doc = impl->createDocument(
                                            0,                    // root element namespace URI.
                                            X("company"),         // root element name
                                            0);                   // document type object (DTD).

    DOMElement* rootElem = doc->getDocumentElement();

    DOMElement*  prodElem = doc->createElement(X("product"));
    rootElem->appendChild(prodElem);

    DOMText*    prodDataVal = doc->createTextNode(X("Xerces-C"));
    prodElem->appendChild(prodDataVal);

    DOMElement*  catElem = doc->createElement(X("category"));
    rootElem->appendChild(catElem);

    catElem->setAttribute(X("idea"), X("great"));

    DOMText*    catDataVal = doc->createTextNode(X("XML Parsing Tools"));
    catElem->appendChild(catDataVal);

    DOMElement*  devByElem = doc->createElement(X("developedBy"));
    rootElem->appendChild(devByElem);

    DOMText*    devByDataVal = doc->createTextNode(X("Apache Software Foundation"));
    devByElem->appendChild(devByDataVal);

    //
    // Now count the number of elements in the above DOM tree.
    //

    unsigned int elementCount = doc->getElementsByTagName(X("*"))->getLength();
    cout << "The tree just created contains: " << elementCount
         << " elements." << endl;

    doc->release();

  }

  XMLPlatformUtils::Terminate();
  return 0;
}
