/*
 * Copyright 1999-2004 The Apache Software Foundation.
 *
 * Licensed 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.
 */

#include <xalanc/Include/PlatformDefinitions.hpp>


#include <cassert>
#if defined(XALAN_CLASSIC_IOSTREAMS)
#include <iostream.h>
#else
#include <iostream>
#endif


#include <xercesc/framework/URLInputSource.hpp>
#if XERCES_VERSION_MAJOR >= 2
#include <xercesc/parsers/XercesDOMParser.hpp>
#else
#include <xercesc/parsers/DOMParser.hpp>
#endif
#include <xercesc/util/PlatformUtils.hpp>


#include <xalanc/PlatformSupport/URISupport.hpp>


#include <xalanc/XercesParserLiaison/XercesParserLiaison.hpp>
#include <xalanc/XercesParserLiaison/XercesDOMSupport.hpp>


#include <xalanc/XalanSourceTree/XalanSourceTreeDOMSupport.hpp>
#include <xalanc/XalanSourceTree/XalanSourceTreeParserLiaison.hpp>


#include <xalanc/XalanTransformer/XalanTransformer.hpp>
#include <xalanc/XalanTransformer/XercesDOMWrapperParsedSource.hpp>
#include <xalanc/XalanTransformer/XalanSourceTreeWrapperParsedSource.hpp>


XALAN_USING_XALAN(XalanCompiledStylesheet)
XALAN_USING_XALAN(XalanDOMString)
XALAN_USING_XALAN(XalanTransformer)
XALAN_USING_XALAN(XSLTInputSource)
XALAN_USING_XALAN(XSLTResultTarget)


int
transformXercesDOM(
			XalanTransformer&				theTransformer,
			const XalanDOMString&			theURI,
			const XalanCompiledStylesheet*	theStylesheet,
			const XSLTResultTarget&			theResultTarget)
{
	XALAN_USING_XERCES(URLInputSource)

	XALAN_USING_XALAN(XercesParserLiaison)
	XALAN_USING_XALAN(XercesDOMSupport)
	XALAN_USING_XALAN(XercesDOMWrapperParsedSource)


	const URLInputSource	theInputSource(theURI.c_str());

	XercesParserLiaison::DOMParserType	theParser;

	theParser.parse(theInputSource);

	XercesParserLiaison		theParserLiaison;
	XercesDOMSupport		theDOMSupport;

	const XercesDOMWrapperParsedSource	theWrapper(
				theParser.getDocument(),
				theParserLiaison,
				theDOMSupport,
				theURI);

	return theTransformer.transform(
						theWrapper,
						theStylesheet,
						theResultTarget);
}


int
transformXalanSourceTree(
			XalanTransformer&				theTransformer,
			const XalanDOMString&			theURI,
			const XalanCompiledStylesheet*	theStylesheet,
			const XSLTResultTarget&			theResultTarget)
{
	XALAN_USING_XERCES(URLInputSource)

	XALAN_USING_XALAN(XalanDocument)
	XALAN_USING_XALAN(XalanSourceTreeDocument)
	XALAN_USING_XALAN(XalanSourceTreeParserLiaison)
	XALAN_USING_XALAN(XalanSourceTreeDOMSupport)
	XALAN_USING_XALAN(XalanSourceTreeWrapperParsedSource)


	const URLInputSource			theInputSource(theURI.c_str());

	XalanSourceTreeParserLiaison	theParserLiaison;
	XalanSourceTreeDOMSupport		theDOMSupport(theParserLiaison);

	XalanDocument* const	theDocument = theParserLiaison.parseXMLStream(theInputSource, theURI);

	XalanSourceTreeDocument* const	theSourceTreeDocument = theParserLiaison.mapDocument(theDocument);
	assert(theSourceTreeDocument != 0);

	XalanSourceTreeWrapperParsedSource	theWrapper(theSourceTreeDocument, theParserLiaison, theDOMSupport, theURI);

	return theTransformer.transform(
						theWrapper,
						theStylesheet,
						theResultTarget);
}


int
transform()
{
	XALAN_USING_STD(cerr)
	XALAN_USING_STD(cout)
	XALAN_USING_STD(endl)

	int		theResult = -1;

	try
	{
		// Create a XalanTransformer.
		XalanTransformer	theTransformer;

		const XSLTInputSource	theStylesheetInputSource("foo.xsl");

		// Let's compile the stylesheet and re-use it...
		const XalanCompiledStylesheet*		theStylesheet = 0;

		if (theTransformer.compileStylesheet(theStylesheetInputSource, theStylesheet) != 0)
		{
			cerr << "An error occurred compiling the stylesheet: "
				 << theTransformer.getLastError()
				 << endl;
		}
		else
		{
			XALAN_USING_XALAN(URISupport)

			assert(theStylesheet != 0);

			const XalanDOMString	theInputFile("foo.xml");

			const XalanDOMString	theURI(URISupport::getURLStringFromString(theInputFile));

			const XSLTResultTarget	theResultTarget(cout);

			theResult = transformXercesDOM(theTransformer, theURI, theStylesheet, theResultTarget);

			if (theResult == 0)
			{
				cout << endl;

				theResult = transformXalanSourceTree(theTransformer, theURI, theStylesheet, theResultTarget);
			}

			if (theResult != 0)
			{
				cerr << "Transformation failed: " << theTransformer.getLastError() << endl;
			}
		}
	}
	catch(...)
	{
		cerr << "An unknown error occurred!" << endl;
	}

	return theResult;
}


// This sample shows how existing Xerces DOMDocument instances and XalanSourceTreeDocument
// instances can be wrapped to use as input for to an instance of XalanTransformer.
int
main(
			int		 argc,
			char*	/* argv */[])
{
	XALAN_USING_STD(cerr)
	XALAN_USING_STD(endl)

	int		theResult = -1;

    if (argc != 1)
	{
		cerr << "Usage: ParsedSourceWrappers" << endl;
	}
	else
	{
		try
		{
			XALAN_USING_XERCES(XMLPlatformUtils)

			// Call the static initializer for Xerces.
			XMLPlatformUtils::Initialize();

			// Initialize Xalan.
			XalanTransformer::initialize();

			theResult = transform();

			// Terminate Xalan...
			XalanTransformer::terminate();

			// Terminate Xerces...
			XMLPlatformUtils::Terminate();

			// Clean up the ICU, if it's integrated...
			XalanTransformer::ICUCleanUp();
		}
		catch(...)
		{
			cerr << "Initialization failed!" << endl;
		}
	}

	return theResult;
}