118 lines
4.4 KiB
C++
118 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Peter Van der Beken, peterv@netscape.com
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* -- original author.
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*
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*/
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#include "XSLTFunctions.h"
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#include "XMLUtils.h"
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#include "Names.h"
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/*
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Implementation of XSLT 1.0 extension function: element-available
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*/
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/**
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* Creates a new element-available function call
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**/
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ElementAvailableFunctionCall::ElementAvailableFunctionCall() :
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FunctionCall(ELEMENT_AVAILABLE_FN)
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{
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}
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/**
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* Evaluates this Expr based on the given context node and processor state
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* @param context the context node for evaluation of this Expr
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* @param cs the ContextState containing the stack information needed
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* for evaluation
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* @return the result of the evaluation
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* @see FunctionCall.h
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**/
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ExprResult* ElementAvailableFunctionCall::evaluate(Node* context, ContextState* cs) {
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ExprResult* result = NULL;
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if ( requireParams(1,1,cs) ) {
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ListIterator* iter = params.iterator();
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Expr* param = (Expr*) iter->next();
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delete iter;
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ExprResult* exprResult = param->evaluate(context, cs);
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if (exprResult->getResultType() == ExprResult::STRING) {
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String property;
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exprResult->stringValue(property);
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if (XMLUtils::isValidQName(property)) {
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String prefix, propertyNsURI;
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XMLUtils::getNameSpace(property, prefix);
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if (prefix.length() > 0) {
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cs->getNameSpaceURIFromPrefix(property, propertyNsURI);
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}
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if (propertyNsURI.isEqual(XSLT_NS)) {
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String localName;
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XMLUtils::getLocalPart(property, localName);
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if ( localName.isEqual(APPLY_IMPORTS) ||
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localName.isEqual(APPLY_TEMPLATES) ||
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localName.isEqual(ATTRIBUTE) ||
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localName.isEqual(ATTRIBUTE_SET) ||
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localName.isEqual(CALL_TEMPLATE) ||
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localName.isEqual(CHOOSE) ||
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localName.isEqual(COMMENT) ||
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localName.isEqual(COPY) ||
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localName.isEqual(COPY_OF) ||
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localName.isEqual(ELEMENT) ||
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localName.isEqual(FOR_EACH) ||
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localName.isEqual(IF) ||
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localName.isEqual(IMPORT) ||
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localName.isEqual(INCLUDE) ||
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localName.isEqual(MESSAGE) ||
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localName.isEqual(NUMBER) ||
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localName.isEqual(OTHERWISE) ||
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localName.isEqual(OUTPUT) ||
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localName.isEqual(PARAM) ||
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localName.isEqual(PI) ||
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localName.isEqual(PRESERVE_SPACE) ||
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localName.isEqual(SORT) ||
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localName.isEqual(STRIP_SPACE) ||
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localName.isEqual(TEMPLATE) ||
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localName.isEqual(TEXT) ||
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localName.isEqual(VALUE_OF) ||
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localName.isEqual(VARIABLE) ||
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localName.isEqual(WHEN) ||
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localName.isEqual(WITH_PARAM) ) {
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result = new BooleanResult(MB_TRUE);
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}
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}
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}
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}
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else {
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String err("Invalid argument passed to element-available(), expecting String");
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delete result;
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result = new StringResult(err);
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}
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}
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if (!result) {
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result = new BooleanResult(MB_FALSE);
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}
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return result;
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}
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