/*
 * 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 "XalanExtensions.hpp"

#include "FunctionDifference.hpp"
#include "FunctionDistinct.hpp"
#include "FunctionEvaluate.hpp"
#include "FunctionHasSameNodes.hpp"
#include "FunctionIntersection.hpp"
#include "FunctionNodeSet.hpp"



#include <xalanc/XPath/XPathEnvSupportDefault.hpp>



XALAN_CPP_NAMESPACE_BEGIN



static const XalanDOMChar	s_extensionsNamespace[] =
{
	XalanUnicode::charLetter_h,
	XalanUnicode::charLetter_t,
	XalanUnicode::charLetter_t,
	XalanUnicode::charLetter_p,
	XalanUnicode::charColon,
	XalanUnicode::charSolidus,
	XalanUnicode::charSolidus,
	XalanUnicode::charLetter_x,
	XalanUnicode::charLetter_m,
	XalanUnicode::charLetter_l,
	XalanUnicode::charFullStop,
	XalanUnicode::charLetter_a,
	XalanUnicode::charLetter_p,
	XalanUnicode::charLetter_a,
	XalanUnicode::charLetter_c,
	XalanUnicode::charLetter_h,
	XalanUnicode::charLetter_e,
	XalanUnicode::charFullStop,
	XalanUnicode::charLetter_o,
	XalanUnicode::charLetter_r,
	XalanUnicode::charLetter_g,
	XalanUnicode::charSolidus,
	XalanUnicode::charLetter_x,
	XalanUnicode::charLetter_a,
	XalanUnicode::charLetter_l,
	XalanUnicode::charLetter_a,
	XalanUnicode::charLetter_n,
	0
};



static const XalanDOMChar	s_differenceFunctionName[] =
{
	XalanUnicode::charLetter_d,
	XalanUnicode::charLetter_i,
	XalanUnicode::charLetter_f,
	XalanUnicode::charLetter_f,
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_r,
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_n,
	XalanUnicode::charLetter_c,
	XalanUnicode::charLetter_e,
	0
};



static const XalanDOMChar	s_distinctFunctionName[] =
{
	XalanUnicode::charLetter_d,
	XalanUnicode::charLetter_i,
	XalanUnicode::charLetter_s,
	XalanUnicode::charLetter_t,
	XalanUnicode::charLetter_i,
	XalanUnicode::charLetter_n,
	XalanUnicode::charLetter_c,
	XalanUnicode::charLetter_t,
	0
};



static const XalanDOMChar	s_evaluateFunctionName[] =
{
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_v,
	XalanUnicode::charLetter_a,
	XalanUnicode::charLetter_l,
	XalanUnicode::charLetter_u,
	XalanUnicode::charLetter_a,
	XalanUnicode::charLetter_t,
	XalanUnicode::charLetter_e,
	0
};



static const XalanDOMChar	s_hasSameNodesFunctionName[] =
{
	XalanUnicode::charLetter_h,
	XalanUnicode::charLetter_a,
	XalanUnicode::charLetter_s,
	XalanUnicode::charLetter_S,
	XalanUnicode::charLetter_a,
	XalanUnicode::charLetter_m,
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_N,
	XalanUnicode::charLetter_o,
	XalanUnicode::charLetter_d,
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_s,
	0
};



static const XalanDOMChar	s_intersectionFunctionName[] =
{
	XalanUnicode::charLetter_i,
	XalanUnicode::charLetter_n,
	XalanUnicode::charLetter_t,
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_r,
	XalanUnicode::charLetter_s,
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_c,
	XalanUnicode::charLetter_t,
	XalanUnicode::charLetter_i,
	XalanUnicode::charLetter_o,
	XalanUnicode::charLetter_n,
	0
};



static const XalanDOMChar	s_nodeSetFunctionName1[] =
{
	XalanUnicode::charLetter_n,
	XalanUnicode::charLetter_o,
	XalanUnicode::charLetter_d,
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_s,
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_t,
	0
};



static const XalanDOMChar	s_nodeSetFunctionName2[] =
{
	XalanUnicode::charLetter_n,
	XalanUnicode::charLetter_o,
	XalanUnicode::charLetter_d,
	XalanUnicode::charLetter_e,
	XalanUnicode::charHyphenMinus,
	XalanUnicode::charLetter_s,
	XalanUnicode::charLetter_e,
	XalanUnicode::charLetter_t,
	0
};



static const FunctionDifference		s_differenceFunction;
static const FunctionDistinct		s_distinctFunction;
static const FunctionEvaluate		s_evaluateFunction;
static const FunctionHasSameNodes	s_hasSameNodesFunction;
static const FunctionIntersection	s_intersectionFunction;
static const FunctionNodeSet		s_nodesetFunction(true);



static const XalanExtensionsInstaller::FunctionTableEntry	theFunctionTable[] =
{
	{ s_differenceFunctionName, &s_differenceFunction },
	{ s_distinctFunctionName, &s_distinctFunction },
	{ s_evaluateFunctionName, &s_evaluateFunction },
	{ s_hasSameNodesFunctionName, &s_hasSameNodesFunction },
	{ s_intersectionFunctionName, &s_intersectionFunction },
	{ s_nodeSetFunctionName1, &s_nodesetFunction },
	{ s_nodeSetFunctionName2, &s_nodesetFunction },
	{ 0, 0 }
};



void
XalanExtensionsInstaller::installLocal(XPathEnvSupportDefault&	theSupport)
{
	doInstallLocal(s_extensionsNamespace, theFunctionTable, theSupport);
}



void
XalanExtensionsInstaller::installGlobal(MemoryManagerType& theManager)
{
	doInstallGlobal( theManager, s_extensionsNamespace, theFunctionTable);
}



void
XalanExtensionsInstaller::uninstallLocal(XPathEnvSupportDefault&	theSupport)
{
	doUninstallLocal(s_extensionsNamespace, theFunctionTable, theSupport);
}



void
XalanExtensionsInstaller::uninstallGlobal(MemoryManagerType& theManager)
{
	doUninstallGlobal(theManager, s_extensionsNamespace, theFunctionTable);
}



void
XalanExtensionsInstaller::doInstallLocal(
			const XalanDOMChar*			theNamespace,
			const FunctionTableEntry	theFunctionTable[],
			XPathEnvSupportDefault&		theSupport)
{
	assert(theNamespace != 0);

	const XalanDOMString	theNamespaceString(theNamespace, theSupport.getMemoryManager());
	XalanDOMString			theFunctionName( theSupport.getMemoryManager());

	for(const FunctionTableEntry* theEntry = theFunctionTable; theEntry->theFunctionName != 0; ++theEntry)
	{
		assert(theEntry->theFunction != 0);

		theFunctionName = theEntry->theFunctionName;

		theSupport.installExternalFunctionLocal(theNamespaceString, theFunctionName, *theEntry->theFunction);
	}
}



void
XalanExtensionsInstaller::doInstallGlobal(
            MemoryManagerType&          theManager,
			const XalanDOMChar*			theNamespace,
			const FunctionTableEntry	theFunctionTable[])
{
	assert(theNamespace != 0);

	const XalanDOMString	theNamespaceString(theNamespace, theManager);
	XalanDOMString			theFunctionName(theManager);

	for(const FunctionTableEntry* theEntry = theFunctionTable; theEntry->theFunctionName != 0; ++theEntry)
	{
		assert(theEntry->theFunction != 0);

		theFunctionName = theEntry->theFunctionName;

		XPathEnvSupportDefault::installExternalFunctionGlobal(theNamespaceString, theFunctionName, *theEntry->theFunction);
	}
}



void
XalanExtensionsInstaller::doUninstallLocal(
			const XalanDOMChar*			theNamespace,
			const FunctionTableEntry	theFunctionTable[],
			XPathEnvSupportDefault&		theSupport)
{
	assert(theNamespace != 0);

	const XalanDOMString	theNamespaceString(theNamespace, theSupport.getMemoryManager());
	XalanDOMString			theFunctionName(theSupport.getMemoryManager());

	for(const FunctionTableEntry* theEntry = theFunctionTable; theEntry->theFunctionName != 0; ++theEntry)
	{
		theFunctionName = theEntry->theFunctionName;

		theSupport.uninstallExternalFunctionLocal(theNamespaceString, theFunctionName);
	}
}



void
XalanExtensionsInstaller::doUninstallGlobal(
            MemoryManagerType&          theManager,
			const XalanDOMChar*			theNamespace,
			const FunctionTableEntry	theFunctionTable[])
{
	assert(theNamespace != 0);

	const XalanDOMString	theNamespaceString(theNamespace, theManager);
	XalanDOMString			theFunctionName(theManager);

	for(const FunctionTableEntry* theEntry = theFunctionTable; theEntry->theFunctionName != 0; ++theEntry)
	{
		theFunctionName = theEntry->theFunctionName;

		XPathEnvSupportDefault::uninstallExternalFunctionGlobal(theNamespaceString, theFunctionName);
	}
}



XALAN_CPP_NAMESPACE_END