LCOV - code coverage report
Current view: directory - content/xslt/src/xslt - txDocumentFunctionCall.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 70 0 0.0 %
Date: 2012-06-02 Functions: 6 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is TransforMiiX XSLT processor code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * The MITRE Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1999
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Olivier Gerardin <ogerardin@vo.lu> (Original Author)
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : /*
      40                 :  * DocumentFunctionCall
      41                 :  * A representation of the XSLT additional function: document()
      42                 :  */
      43                 : 
      44                 : #include "nsGkAtoms.h"
      45                 : #include "txIXPathContext.h"
      46                 : #include "txXSLTFunctions.h"
      47                 : #include "txExecutionState.h"
      48                 : #include "txURIUtils.h"
      49                 : 
      50                 : /*
      51                 :  * Creates a new DocumentFunctionCall.
      52                 :  */
      53               0 : DocumentFunctionCall::DocumentFunctionCall(const nsAString& aBaseURI)
      54               0 :     : mBaseURI(aBaseURI)
      55                 : {
      56               0 : }
      57                 : 
      58                 : static void
      59               0 : retrieveNode(txExecutionState* aExecutionState, const nsAString& aUri,
      60                 :              const nsAString& aBaseUri, txNodeSet* aNodeSet)
      61                 : {
      62               0 :     nsAutoString absUrl;
      63               0 :     URIUtils::resolveHref(aUri, aBaseUri, absUrl);
      64                 : 
      65               0 :     PRInt32 hash = absUrl.RFindChar(PRUnichar('#'));
      66                 :     PRUint32 urlEnd, fragStart, fragEnd;
      67               0 :     if (hash == kNotFound) {
      68               0 :         urlEnd = absUrl.Length();
      69               0 :         fragStart = 0;
      70               0 :         fragEnd = 0;
      71                 :     }
      72                 :     else {
      73               0 :         urlEnd = hash;
      74               0 :         fragStart = hash + 1;
      75               0 :         fragEnd = absUrl.Length();
      76                 :     }
      77                 : 
      78               0 :     nsDependentSubstring docUrl(absUrl, 0, urlEnd);
      79               0 :     nsDependentSubstring frag(absUrl, fragStart, fragEnd);
      80                 : 
      81               0 :     const txXPathNode* loadNode = aExecutionState->retrieveDocument(docUrl);
      82               0 :     if (loadNode) {
      83               0 :         if (frag.IsEmpty()) {
      84               0 :             aNodeSet->add(*loadNode);
      85                 :         }
      86                 :         else {
      87               0 :             txXPathTreeWalker walker(*loadNode);
      88               0 :             if (walker.moveToElementById(frag)) {
      89               0 :                 aNodeSet->add(walker.getCurrentPosition());
      90                 :             }
      91                 :         }
      92                 :     }
      93               0 : }
      94                 : 
      95                 : /*
      96                 :  * Evaluates this Expr based on the given context node and processor state
      97                 :  * NOTE: the implementation is incomplete since it does not make use of the
      98                 :  * second argument (base URI)
      99                 :  * @param context the context node for evaluation of this Expr
     100                 :  * @return the result of the evaluation
     101                 :  */
     102                 : nsresult
     103               0 : DocumentFunctionCall::evaluate(txIEvalContext* aContext,
     104                 :                                txAExprResult** aResult)
     105                 : {
     106               0 :     *aResult = nsnull;
     107                 :     txExecutionState* es =
     108               0 :         static_cast<txExecutionState*>(aContext->getPrivateContext());
     109                 : 
     110               0 :     nsRefPtr<txNodeSet> nodeSet;
     111               0 :     nsresult rv = aContext->recycler()->getNodeSet(getter_AddRefs(nodeSet));
     112               0 :     NS_ENSURE_SUCCESS(rv, rv);
     113                 : 
     114                 :     // document(object, node-set?)
     115               0 :     if (!requireParams(1, 2, aContext)) {
     116               0 :         return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
     117                 :     }
     118                 : 
     119               0 :     nsRefPtr<txAExprResult> exprResult1;
     120               0 :     rv = mParams[0]->evaluate(aContext, getter_AddRefs(exprResult1));
     121               0 :     NS_ENSURE_SUCCESS(rv, rv);
     122                 : 
     123               0 :     nsAutoString baseURI;
     124               0 :     bool baseURISet = false;
     125                 : 
     126               0 :     if (mParams.Length() == 2) {
     127                 :         // We have 2 arguments, get baseURI from the first node
     128                 :         // in the resulting nodeset
     129               0 :         nsRefPtr<txNodeSet> nodeSet2;
     130               0 :         rv = evaluateToNodeSet(mParams[1],
     131               0 :                                aContext, getter_AddRefs(nodeSet2));
     132               0 :         NS_ENSURE_SUCCESS(rv, rv);
     133                 : 
     134                 :         // Make this true, even if nodeSet2 is empty. For relative URLs,
     135                 :         // we'll fail to load the document with an empty base URI, and for
     136                 :         // absolute URLs, the base URI doesn't matter
     137               0 :         baseURISet = true;
     138                 : 
     139               0 :         if (!nodeSet2->isEmpty()) {
     140               0 :             txXPathNodeUtils::getBaseURI(nodeSet2->get(0), baseURI);
     141                 :         }
     142                 :     }
     143                 : 
     144               0 :     if (exprResult1->getResultType() == txAExprResult::NODESET) {
     145                 :         // The first argument is a NodeSet, iterate on its nodes
     146                 :         txNodeSet* nodeSet1 = static_cast<txNodeSet*>
     147                 :                                          (static_cast<txAExprResult*>
     148               0 :                                                      (exprResult1));
     149                 :         PRInt32 i;
     150               0 :         for (i = 0; i < nodeSet1->size(); ++i) {
     151               0 :             const txXPathNode& node = nodeSet1->get(i);
     152               0 :             nsAutoString uriStr;
     153               0 :             txXPathNodeUtils::appendNodeValue(node, uriStr);
     154               0 :             if (!baseURISet) {
     155                 :                 // if the second argument wasn't specified, use
     156                 :                 // the baseUri of node itself
     157               0 :                 txXPathNodeUtils::getBaseURI(node, baseURI);
     158                 :             }
     159               0 :             retrieveNode(es, uriStr, baseURI, nodeSet);
     160                 :         }
     161                 :         
     162               0 :         NS_ADDREF(*aResult = nodeSet);
     163                 :         
     164               0 :         return NS_OK;
     165                 :     }
     166                 : 
     167                 :     // The first argument is not a NodeSet
     168               0 :     nsAutoString uriStr;
     169               0 :     exprResult1->stringValue(uriStr);
     170               0 :     const nsAString* base = baseURISet ? &baseURI : &mBaseURI;
     171               0 :     retrieveNode(es, uriStr, *base, nodeSet);
     172                 : 
     173               0 :     NS_ADDREF(*aResult = nodeSet);
     174                 : 
     175               0 :     return NS_OK;
     176                 : }
     177                 : 
     178                 : Expr::ResultType
     179               0 : DocumentFunctionCall::getReturnType()
     180                 : {
     181               0 :     return NODESET_RESULT;
     182                 : }
     183                 : 
     184                 : bool
     185               0 : DocumentFunctionCall::isSensitiveTo(ContextSensitivity aContext)
     186                 : {
     187               0 :     return (aContext & PRIVATE_CONTEXT) || argsSensitiveTo(aContext);
     188                 : }
     189                 : 
     190                 : #ifdef TX_TO_STRING
     191                 : nsresult
     192               0 : DocumentFunctionCall::getNameAtom(nsIAtom** aAtom)
     193                 : {
     194               0 :     *aAtom = nsGkAtoms::document;
     195               0 :     NS_ADDREF(*aAtom);
     196               0 :     return NS_OK;
     197                 : }
     198                 : #endif

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