| /* |
| * 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 "FunctionGenerateID.hpp" |
| |
| |
| |
| #include <xalanc/XalanDOM/XalanDocument.hpp> |
| |
| |
| |
| #include <xalanc/PlatformSupport/DOMStringHelper.hpp> |
| #include <xalanc/PlatformSupport/XalanMessageLoader.hpp> |
| |
| |
| |
| #include <xalanc/XPath/NodeRefListBase.hpp> |
| #include <xalanc/XPath/XObjectFactory.hpp> |
| |
| |
| |
| XALAN_CPP_NAMESPACE_BEGIN |
| |
| |
| |
| const XalanDOMString FunctionGenerateID::s_emptyString; |
| |
| |
| |
| FunctionGenerateID::FunctionGenerateID() : |
| Function() |
| { |
| } |
| |
| |
| |
| FunctionGenerateID::~FunctionGenerateID() |
| { |
| } |
| |
| |
| |
| // Append the suffix to the provided string. |
| void |
| getSuffix( |
| const XalanNode* theNode, |
| XalanDOMString& theResult) |
| { |
| assert(theNode != 0); |
| |
| // We're assuming here that each node has an implementation with a |
| // unique address that we can convert into a string... |
| if (theNode->getOwnerDocument() != 0) |
| { |
| PointerToDOMString(theNode->getOwnerDocument(), theResult); |
| |
| append(theResult, XalanDOMChar(XalanUnicode::charFullStop)); |
| } |
| |
| PointerToDOMString(theNode, theResult); |
| } |
| |
| |
| |
| XObjectPtr |
| FunctionGenerateID::execute( |
| XPathExecutionContext& executionContext, |
| XalanNode* context, |
| const LocatorType* locator) const |
| { |
| if (context == 0) |
| { |
| executionContext.error( |
| XalanMessageLoader::getMessage(XalanMessages::FunctionRequiresNonNullContextNode_1Param,"generate-id()"), |
| context, |
| locator); |
| |
| return XObjectPtr(); |
| } |
| else |
| { |
| XPathExecutionContext::GetAndReleaseCachedString theID(executionContext); |
| |
| theID.get() = XalanUnicode::charLetter_N; |
| |
| getSuffix(context, theID.get()); |
| |
| return executionContext.getXObjectFactory().createString(theID); |
| } |
| } |
| |
| |
| |
| XObjectPtr |
| FunctionGenerateID::execute( |
| XPathExecutionContext& executionContext, |
| XalanNode* /* context */, |
| const XObjectPtr arg1, |
| const LocatorType* locator) const |
| { |
| assert(arg1.null() == false); |
| |
| const NodeRefListBase& theNodeList = arg1->nodeset(); |
| |
| if (theNodeList.getLength() == 0) |
| { |
| return executionContext.getXObjectFactory().createStringReference(s_emptyString); |
| } |
| else |
| { |
| return execute(executionContext, theNodeList.item(0), locator); |
| } |
| } |
| |
| |
| |
| #if defined(XALAN_NO_COVARIANT_RETURN_TYPE) |
| Function* |
| #else |
| FunctionGenerateID* |
| #endif |
| FunctionGenerateID::clone() const |
| { |
| return new FunctionGenerateID(*this); |
| } |
| |
| |
| |
| const XalanDOMString |
| FunctionGenerateID::getError() const |
| { |
| return XalanMessageLoader::getMessage(XalanMessages::FunctionTakesZeroOrOneArg_1Param,"generate-id"); |
| } |
| |
| |
| |
| XALAN_CPP_NAMESPACE_END |