135 lines
5.4 KiB
C++
135 lines
5.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All 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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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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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(¶ms);
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Expr* param = (Expr*) iter.next();
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ExprResult* exprResult = param->evaluate(context, cs);
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if (exprResult &&
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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::getPrefix(property, prefix);
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if (!prefix.isEmpty()) {
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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(DECIMAL_FORMAT) ||
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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(KEY) ||
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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(PROC_INST) ||
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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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delete exprResult;
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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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