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lightning-sunbird  0.9+nobinonly
SystemPropertyFunctionCall.cpp
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is TransforMiiX XSLT processor code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Axel Hecht.
00019  * Portions created by the Initial Developer are Copyright (C) 2001
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Axel Hecht <axel@pike.org>
00024  *
00025  *
00026  * Alternatively, the contents of this file may be used under the terms of
00027  * either the GNU General Public License Version 2 or later (the "GPL"), or
00028  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00029  * in which case the provisions of the GPL or the LGPL are applicable instead
00030  * of those above. If you wish to allow use of your version of this file only
00031  * under the terms of either the GPL or the LGPL, and not to allow others to
00032  * use your version of this file under the terms of the MPL, indicate your
00033  * decision by deleting the provisions above and replace them with the notice
00034  * and other provisions required by the GPL or the LGPL. If you do not delete
00035  * the provisions above, a recipient may use your version of this file under
00036  * the terms of any one of the MPL, the GPL or the LGPL.
00037  *
00038  * ***** END LICENSE BLOCK ***** */
00039 
00040 #include "txIXPathContext.h"
00041 #include "txAtoms.h"
00042 #include "txError.h"
00043 #include "XMLUtils.h"
00044 #include "XSLTFunctions.h"
00045 #include "ExprResult.h"
00046 #include "txNamespaceMap.h"
00047 
00048 /*
00049   Implementation of XSLT 1.0 extension function: system-property
00050 */
00051 
00057 SystemPropertyFunctionCall::SystemPropertyFunctionCall(txNamespaceMap* aMappings)
00058     : mMappings(aMappings)      
00059 {
00060 }
00061 
00070 nsresult
00071 SystemPropertyFunctionCall::evaluate(txIEvalContext* aContext,
00072                                      txAExprResult** aResult)
00073 {
00074     *aResult = nsnull;
00075 
00076     if (!requireParams(1, 1, aContext)) {
00077         return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
00078     }
00079 
00080     txListIterator iter(&params);
00081     Expr* param = (Expr*)iter.next();
00082     nsRefPtr<txAExprResult> exprResult;
00083     nsresult rv = param->evaluate(aContext, getter_AddRefs(exprResult));
00084     NS_ENSURE_SUCCESS(rv, rv);
00085 
00086     nsAutoString property;
00087     exprResult->stringValue(property);
00088     txExpandedName qname;
00089     rv = qname.init(property, mMappings, MB_TRUE);
00090     NS_ENSURE_SUCCESS(rv, rv);
00091 
00092     if (qname.mNamespaceID == kNameSpaceID_XSLT) {
00093         if (qname.mLocalName == txXSLTAtoms::version) {
00094             return aContext->recycler()->getNumberResult(1.0, aResult);
00095         }
00096         if (qname.mLocalName == txXSLTAtoms::vendor) {
00097             return aContext->recycler()->getStringResult(
00098                   NS_LITERAL_STRING("Transformiix"), aResult);
00099         }
00100         if (qname.mLocalName == txXSLTAtoms::vendorUrl) {
00101             return aContext->recycler()->getStringResult(
00102                   NS_LITERAL_STRING("http://www.mozilla.org/projects/xslt/"),
00103                   aResult);
00104         }
00105     }
00106     aContext->recycler()->getEmptyStringResult(aResult);
00107 
00108     return NS_OK;
00109 
00110 }
00111 
00112 #ifdef TX_TO_STRING
00113 nsresult
00114 SystemPropertyFunctionCall::getNameAtom(nsIAtom** aAtom)
00115 {
00116     *aAtom = txXSLTAtoms::systemProperty;
00117     NS_ADDREF(*aAtom);
00118     return NS_OK;
00119 }
00120 #endif