src/xalanc/XPath/FunctionContains.cpp

/*
 * 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 "FunctionContains.hpp"



#include <xalanc/PlatformSupport/XalanMessageLoader.hpp>



#include "XObjectFactory.hpp"



XALAN_CPP_NAMESPACE_BEGIN



FunctionContains::FunctionContains()
{
}



FunctionContains::~FunctionContains()
{
}



XObjectPtr
FunctionContains::execute(
			XPathExecutionContext&	executionContext,
			XalanNode*				/* context */,			
			const XObjectPtr		arg1,
			const XObjectPtr		arg2,
			const LocatorType*		/* locator */) const
{
	assert(arg1.null() == false && arg2.null() == false);	

	const XalanDOMString&	str1 = arg1->str();
	const XalanDOMString&	str2 = arg2->str();

	bool					fResult = true;

	// If str2 is empty, then don't bother to check anything.
	if (isEmpty(str2) == false)
	{
		// Is str1 empty?
		if (isEmpty(str1) == true)
		{
			fResult = false;
		}
		else
		{
			// OK, both strings have some data, so look for
			// the index...
			const XalanDOMString::size_type		theIndex = indexOf(str1, str2);

			fResult = theIndex < length(str1) ? true : false;
		}
	}

	return executionContext.getXObjectFactory().createBoolean(fResult);
}



#if defined(XALAN_NO_COVARIANT_RETURN_TYPE)
Function*
#else
FunctionContains*
#endif
FunctionContains::clone() const
{
	return new FunctionContains(*this);
}



const XalanDOMString
FunctionContains::getError() const
{
	return XalanMessageLoader::getMessage(XalanMessages::FunctionTakesTwoArguments_1Param, "contains()");
}



XALAN_CPP_NAMESPACE_END