| /* |
| * 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 "FunctionSubstringBefore.hpp" |
| |
| |
| |
| #include <xalanc/PlatformSupport/XalanMessageLoader.hpp> |
| |
| |
| |
| #include "XObjectFactory.hpp" |
| |
| |
| |
| XALAN_CPP_NAMESPACE_BEGIN |
| |
| |
| |
| FunctionSubstringBefore::FunctionSubstringBefore() |
| { |
| } |
| |
| |
| |
| FunctionSubstringBefore::~FunctionSubstringBefore() |
| { |
| } |
| |
| |
| |
| static const XalanDOMString theEmptyString; |
| |
| |
| inline XObjectPtr |
| createEmptyString(XPathExecutionContext& executionContext) |
| { |
| return executionContext.getXObjectFactory().createStringReference(theEmptyString); |
| } |
| |
| |
| |
| XObjectPtr |
| FunctionSubstringBefore::execute( |
| XPathExecutionContext& executionContext, |
| XalanNode* /* context */, |
| const XObjectPtr arg1, |
| const XObjectPtr arg2, |
| const LocatorType* /* locator */) const |
| { |
| assert(arg1.null() == false && arg2.null() == false); |
| |
| const XalanDOMString& theFirstString = arg1->str(); |
| |
| const XalanDOMString::size_type theFirstStringLength = length(theFirstString); |
| |
| if (theFirstStringLength == 0) |
| { |
| return createEmptyString(executionContext); |
| } |
| else |
| { |
| const XalanDOMString& theSecondString = arg2->str(); |
| |
| const XalanDOMString::size_type theSecondStringLength = length(theSecondString); |
| |
| if (theSecondStringLength == 0) |
| { |
| return createEmptyString(executionContext); |
| } |
| else |
| { |
| const XalanDOMString::size_type theIndex = indexOf(theFirstString, |
| theSecondString); |
| |
| if (theIndex == theFirstStringLength) |
| { |
| return createEmptyString(executionContext); |
| } |
| else |
| { |
| XPathExecutionContext::GetAndReleaseCachedString theResult(executionContext); |
| |
| XalanDOMString& theString = theResult.get(); |
| |
| theString.assign( |
| toCharArray(theFirstString), |
| theIndex); |
| |
| // Create a string of the appropriate length... |
| return executionContext.getXObjectFactory().createString(theResult); |
| } |
| } |
| } |
| } |
| |
| |
| |
| #if defined(XALAN_NO_COVARIANT_RETURN_TYPE) |
| Function* |
| #else |
| FunctionSubstringBefore* |
| #endif |
| FunctionSubstringBefore::clone() const |
| { |
| return new FunctionSubstringBefore(*this); |
| } |
| |
| |
| |
| const XalanDOMString |
| FunctionSubstringBefore::getError() const |
| { |
| |
| return XalanMessageLoader::getMessage(XalanMessages::FunctionTakesTwoArguments_1Param, "substring-before()"); |
| |
| } |
| |
| |
| |
| XALAN_CPP_NAMESPACE_END |