2516 lines
89 KiB
C++
2516 lines
89 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 Mozilla 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/MPL/
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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 TransforMiiX XSLT processor.
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*
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* The Initial Developer of the Original Code is The MITRE Corporation.
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* Portions created by MITRE are Copyright (C) 1999 The MITRE Corporation.
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*
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* Portions created by Keith Visco as a Non MITRE employee,
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* (C) 1999, 2000 Keith Visco. All Rights Reserved.
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*
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* Contributor(s):
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* Keith Visco, kvisco@ziplink.net
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* -- original author.
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*
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* Bob Miller, kbob@oblix.com
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* -- plugged core leak.
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*
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* Pierre Phaneuf, pp@ludusdesign.com
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* -- fixed some XPCOM usage.
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*
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* Marina Mechtcheriakova, mmarina@mindspring.com
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* -- Added call to recurisvely attribute-set processing on
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* xsl:attribute-set itself
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* -- Added call to handle attribute-set processing for xsl:copy
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*
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* Nathan Pride, npride@wavo.com
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* -- fixed a document base issue
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*
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* Olivier Gerardin
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* -- Changed behavior of passing parameters to templates
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*
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*/
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#include "XSLTProcessor.h"
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#include "Names.h"
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#include "XMLParser.h"
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#include "VariableBinding.h"
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#include "XMLUtils.h"
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#include "XMLDOMUtils.h"
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#include "txNodeSorter.h"
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#include "Numbering.h"
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#include "Tokenizer.h"
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#include "URIUtils.h"
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#include "txAtoms.h"
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#include "txRtfHandler.h"
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#ifndef TX_EXE
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#include "nsIObserverService.h"
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#include "nsIURL.h"
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#include "nsIServiceManager.h"
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#include "nsIIOService.h"
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#include "nsILoadGroup.h"
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#include "nsIChannel.h"
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#include "nsNetCID.h"
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#include "nsIDOMClassInfo.h"
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#include "nsIConsoleService.h"
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#include "nsIScriptLoader.h"
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#else
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#include "TxLog.h"
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#include "txHTMLOutput.h"
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#include "txTextOutput.h"
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#include "txXMLOutput.h"
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#endif
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//-----------------------------------/
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//- Implementation of XSLTProcessor -/
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//-----------------------------------/
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/**
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* XSLTProcessor is a class for Processing XSL stylesheets
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**/
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/**
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* A warning message used by all templates that do not allow non character
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* data to be generated
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**/
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const String XSLTProcessor::NON_TEXT_TEMPLATE_WARNING =
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"templates for the following element are not allowed to generate non character data: ";
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/*
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* Implement static variables for atomservice and dom.
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*/
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#ifdef TX_EXE
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TX_IMPL_ATOM_STATICS;
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TX_IMPL_DOM_STATICS;
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#endif
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/**
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* Creates a new XSLTProcessor
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**/
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XSLTProcessor::XSLTProcessor() : mOutputHandler(0),
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mResultHandler(0)
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{
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#ifndef TX_EXE
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NS_INIT_ISUPPORTS();
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#endif
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xslVersion.append("1.0");
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appName.append("TransforMiiX");
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appVersion.append("1.0 [beta v20010123]");
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//-- create XSL element types
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xslTypes.setObjectDeletion(MB_TRUE);
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xslTypes.put(APPLY_IMPORTS, new XSLType(XSLType::APPLY_IMPORTS));
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xslTypes.put(APPLY_TEMPLATES, new XSLType(XSLType::APPLY_TEMPLATES));
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xslTypes.put(ATTRIBUTE, new XSLType(XSLType::ATTRIBUTE));
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xslTypes.put(ATTRIBUTE_SET, new XSLType(XSLType::ATTRIBUTE_SET));
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xslTypes.put(CALL_TEMPLATE, new XSLType(XSLType::CALL_TEMPLATE));
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xslTypes.put(CHOOSE, new XSLType(XSLType::CHOOSE));
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xslTypes.put(COMMENT, new XSLType(XSLType::COMMENT));
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xslTypes.put(COPY, new XSLType(XSLType::COPY));
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xslTypes.put(COPY_OF, new XSLType(XSLType::COPY_OF));
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xslTypes.put(DECIMAL_FORMAT, new XSLType(XSLType::DECIMAL_FORMAT));
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xslTypes.put(ELEMENT, new XSLType(XSLType::ELEMENT));
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xslTypes.put(FOR_EACH, new XSLType(XSLType::FOR_EACH));
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xslTypes.put(IF, new XSLType(XSLType::IF));
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xslTypes.put(IMPORT, new XSLType(XSLType::IMPORT));
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xslTypes.put(INCLUDE, new XSLType(XSLType::INCLUDE));
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xslTypes.put(KEY, new XSLType(XSLType::KEY));
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xslTypes.put(MESSAGE, new XSLType(XSLType::MESSAGE));
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xslTypes.put(NUMBER, new XSLType(XSLType::NUMBER));
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xslTypes.put(OTHERWISE, new XSLType(XSLType::OTHERWISE));
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xslTypes.put(OUTPUT, new XSLType(XSLType::OUTPUT));
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xslTypes.put(PARAM, new XSLType(XSLType::PARAM));
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xslTypes.put(PROC_INST, new XSLType(XSLType::PROC_INST));
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xslTypes.put(PRESERVE_SPACE, new XSLType(XSLType::PRESERVE_SPACE));
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xslTypes.put(STRIP_SPACE, new XSLType(XSLType::STRIP_SPACE));
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xslTypes.put(SORT, new XSLType(XSLType::SORT));
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xslTypes.put(TEMPLATE, new XSLType(XSLType::TEMPLATE));
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xslTypes.put(TEXT, new XSLType(XSLType::TEXT));
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xslTypes.put(VALUE_OF, new XSLType(XSLType::VALUE_OF));
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xslTypes.put(VARIABLE, new XSLType(XSLType::VARIABLE));
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xslTypes.put(WHEN, new XSLType(XSLType::WHEN));
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xslTypes.put(WITH_PARAM, new XSLType(XSLType::WITH_PARAM));
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// Create default expressions
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ExprParser parser;
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String node("node()");
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mNodeExpr = parser.createExpr(node);
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} //-- XSLTProcessor
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/**
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* Default destructor
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**/
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XSLTProcessor::~XSLTProcessor()
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{
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delete mOutputHandler;
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delete mNodeExpr;
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}
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#ifndef TX_EXE
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// XXX START
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// XXX Mozilla module only code. This should move to txMozillaXSLTProcessor
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// XXX
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NS_IMPL_ADDREF(XSLTProcessor)
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NS_IMPL_RELEASE(XSLTProcessor)
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NS_INTERFACE_MAP_BEGIN(XSLTProcessor)
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NS_INTERFACE_MAP_ENTRY(nsIDocumentTransformer)
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NS_INTERFACE_MAP_ENTRY(nsIScriptLoaderObserver)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDocumentTransformer)
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NS_INTERFACE_MAP_ENTRY_EXTERNAL_DOM_CLASSINFO(XSLTProcessor)
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NS_INTERFACE_MAP_END
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// XXX
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// XXX Mozilla module only code. This should move to txMozillaXSLTProcessor
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// XXX END
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#else
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/*
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* Initialize atom tables.
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*/
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MBool txInit()
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{
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if (!txNamespaceManager::init())
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return MB_FALSE;
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if (!txHTMLAtoms::init())
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return MB_FALSE;
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if (!txXMLAtoms::init())
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return MB_FALSE;
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if (!txXPathAtoms::init())
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return MB_FALSE;
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return txXSLTAtoms::init();
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}
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/*
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* To be called when done with transformiix.
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*
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* Free atom table, namespace manager.
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*/
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MBool txShutdown()
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{
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txNamespaceManager::shutdown();
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txHTMLAtoms::shutdown();
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txXMLAtoms::shutdown();
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txXPathAtoms::shutdown();
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txXSLTAtoms::shutdown();
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return MB_TRUE;
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}
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#endif
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/**
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* Registers the given ErrorObserver with this ProcessorState
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**/
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void XSLTProcessor::addErrorObserver(ErrorObserver& errorObserver) {
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errorObservers.add(&errorObserver);
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} //-- addErrorObserver
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String& XSLTProcessor::getAppName() {
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return appName;
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} //-- getAppName
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String& XSLTProcessor::getAppVersion() {
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return appVersion;
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} //-- getAppVersion
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#ifdef TX_EXE
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// XXX START
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// XXX Standalone only code. This should move to txStandaloneXSLTProcessor
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// XXX
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/**
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* Parses all XML Stylesheet PIs associated with the
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* given XML document. If any stylesheet PIs are found with
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* type="text/xsl" the href psuedo attribute value will be
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* added to the given href argument. If multiple text/xsl stylesheet PIs
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* are found, the one closest to the end of the document is used.
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**/
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void XSLTProcessor::getHrefFromStylesheetPI(Document& xmlDocument, String& href) {
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Node* node = xmlDocument.getFirstChild();
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String type;
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String tmpHref;
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while (node) {
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if ( node->getNodeType() == Node::PROCESSING_INSTRUCTION_NODE ) {
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String target = ((ProcessingInstruction*)node)->getTarget();
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if ( STYLESHEET_PI.isEqual(target) ||
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STYLESHEET_PI_OLD.isEqual(target) ) {
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String data = ((ProcessingInstruction*)node)->getData();
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type.clear();
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tmpHref.clear();
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parseStylesheetPI(data, type, tmpHref);
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if ( XSL_MIME_TYPE.isEqual(type) ) {
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href.clear();
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URIUtils::resolveHref(tmpHref, node->getBaseURI(), href);
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}
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}
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}
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node = node->getNextSibling();
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}
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} //-- getHrefFromStylesheetPI
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/**
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* Parses the contents of data, and returns the type and href psuedo attributes
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**/
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void XSLTProcessor::parseStylesheetPI(String& data, String& type, String& href) {
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PRInt32 size = data.length();
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NamedMap bufferMap;
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bufferMap.put("type", &type);
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bufferMap.put("href", &href);
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int ccount = 0;
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MBool inLiteral = MB_FALSE;
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UNICODE_CHAR matchQuote = '"';
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String sink;
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String* buffer = &sink;
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for (ccount = 0; ccount < size; ccount++) {
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UNICODE_CHAR ch = data.charAt(ccount);
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switch ( ch ) {
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case ' ' :
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if ( inLiteral ) {
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buffer->append(ch);
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}
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break;
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case '=':
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if ( inLiteral ) buffer->append(ch);
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else if (!buffer->isEmpty()) {
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buffer = (String*)bufferMap.get(*buffer);
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if ( !buffer ) {
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sink.clear();
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buffer = &sink;
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}
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}
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break;
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case '"' :
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case '\'':
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if (inLiteral) {
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if ( matchQuote == ch ) {
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inLiteral = MB_FALSE;
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sink.clear();
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buffer = &sink;
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}
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else buffer->append(ch);
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}
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else {
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inLiteral = MB_TRUE;
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matchQuote = ch;
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}
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break;
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default:
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buffer->append(ch);
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break;
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}
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}
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} //-- parseStylesheetPI
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/**
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* Processes the given XML Document, the XSL stylesheet
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* will be retrieved from the XML Stylesheet Processing instruction,
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* otherwise an empty document will be returned.
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* @param xmlDocument the XML document to process
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* @param documentBase the document base of the XML document, for
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* resolving relative URIs
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* @return the result tree.
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**/
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Document* XSLTProcessor::process(Document& xmlDocument) {
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//-- look for Stylesheet PI
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Document xslDocument; //-- empty for now
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return process(xmlDocument, xslDocument);
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} //-- process
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/**
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* Reads an XML Document from the given XML input stream, and
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* processes the document using the XSL document derived from
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* the given XSL input stream.
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* @return the result tree.
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**/
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Document* XSLTProcessor::process
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(istream& xmlInput, String& xmlFilename,
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istream& xslInput, String& xslFilename) {
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//-- read in XML Document
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XMLParser xmlParser;
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Document* xmlDoc = xmlParser.parse(xmlInput, xmlFilename);
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if (!xmlDoc) {
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String err("error reading XML document: ");
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err.append(xmlParser.getErrorString());
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notifyError(err, ErrorObserver::FATAL);
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return 0;
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}
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//-- Read in XSL document
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Document* xslDoc = xmlParser.parse(xslInput, xslFilename);
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if (!xslDoc) {
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String err("error reading XSL stylesheet document: ");
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err.append(xmlParser.getErrorString());
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notifyError(err, ErrorObserver::FATAL);
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delete xmlDoc;
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return 0;
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}
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Document* result = process(*xmlDoc, *xslDoc);
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delete xmlDoc;
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delete xslDoc;
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return result;
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} //-- process
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/**
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* Reads an XML document from the given XML input stream. The
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* XML document is processed using the associated XSL document
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* retrieved from the XML document's Stylesheet Processing Instruction,
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* otherwise an empty document will be returned.
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* @param xmlDocument the XML document to process
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* @param documentBase the document base of the XML document, for
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* resolving relative URIs
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* @return the result tree.
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**/
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Document* XSLTProcessor::process(istream& xmlInput, String& xmlFilename) {
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//-- read in XML Document
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XMLParser xmlParser;
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Document* xmlDoc = xmlParser.parse(xmlInput, xmlFilename);
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if (!xmlDoc) {
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String err("error reading XML document: ");
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err.append(xmlParser.getErrorString());
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notifyError(err, ErrorObserver::FATAL);
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return 0;
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}
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//-- Read in XSL document
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String href;
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String errMsg;
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getHrefFromStylesheetPI(*xmlDoc, href);
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istream* xslInput = URIUtils::getInputStream(href,errMsg);
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Document* xslDoc = 0;
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if ( xslInput ) {
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xslDoc = xmlParser.parse(*xslInput, href);
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delete xslInput;
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}
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if (!xslDoc) {
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String err("error reading XSL stylesheet document: ");
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err.append(xmlParser.getErrorString());
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notifyError(err, ErrorObserver::FATAL);
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delete xmlDoc;
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return 0;
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}
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Document* result = process(*xmlDoc, *xslDoc);
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delete xmlDoc;
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delete xslDoc;
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return result;
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} //-- process
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// XXX
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// XXX Standalone only code. This should move to txStandaloneXSLTProcessor
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// XXX END
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#endif
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/**
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* Processes the Top level elements for an XSL stylesheet
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**/
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void XSLTProcessor::processStylesheet(Document* aSource,
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Document* aStylesheet,
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ListIterator* aImportFrame,
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ProcessorState* aPs)
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{
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NS_ASSERTION(aStylesheet, "processTopLevel called without stylesheet");
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if (!aStylesheet || !aStylesheet->getDocumentElement())
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return;
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Element* elem = aStylesheet->getDocumentElement();
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txAtom* localName;
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PRInt32 namespaceID = elem->getNamespaceID();
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elem->getLocalName(&localName);
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if (((localName == txXSLTAtoms::stylesheet) ||
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(localName == txXSLTAtoms::transform)) &&
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(namespaceID == kNameSpaceID_XSLT)) {
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processTopLevel(aSource, elem, aImportFrame, aPs);
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}
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else {
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NS_ASSERTION(aImportFrame->current(), "no current importframe");
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if (!aImportFrame->current()) {
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TX_IF_RELEASE_ATOM(localName);
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return;
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}
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aPs->addLREStylesheet(aStylesheet,
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(ProcessorState::ImportFrame*)aImportFrame->current());
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}
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TX_IF_RELEASE_ATOM(localName);
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}
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|
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/**
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* Processes the Top level elements for an XSL stylesheet
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**/
|
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void XSLTProcessor::processTopLevel(Document* aSource,
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Element* aStylesheet,
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ListIterator* importFrame,
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ProcessorState* aPs)
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{
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// Index templates and process top level xsl elements
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NS_ASSERTION(aStylesheet, "processTopLevel called without stylesheet element");
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if (!aStylesheet)
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return;
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|
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ProcessorState::ImportFrame* currentFrame =
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(ProcessorState::ImportFrame*)importFrame->current();
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|
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NS_ASSERTION(currentFrame,
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|
"processTopLevel called with no current importframe");
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|
if (!currentFrame)
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return;
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NS_ASSERTION(aSource, "processTopLevel called without source document");
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MBool importsDone = MB_FALSE;
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Node* node = aStylesheet->getFirstChild();
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|
while (node && !importsDone) {
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|
if (node->getNodeType() == Node::ELEMENT_NODE) {
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|
Element* element = (Element*)node;
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switch (getElementType(element, aPs)) {
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case XSLType::IMPORT :
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{
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String hrefAttr, href;
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element->getAttr(txXSLTAtoms::href, kNameSpaceID_None,
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hrefAttr);
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URIUtils::resolveHref(hrefAttr, element->getBaseURI(),
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href);
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// Create a new ImportFrame with correct firstNotImported
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ProcessorState::ImportFrame *nextFrame, *newFrame;
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nextFrame =
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(ProcessorState::ImportFrame*)importFrame->next();
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newFrame = new ProcessorState::ImportFrame(nextFrame);
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if (!newFrame) {
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// XXX ErrorReport: out of memory
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break;
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}
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// Insert frame and process stylesheet
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importFrame->addBefore(newFrame);
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importFrame->previous();
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processInclude(href, aSource, importFrame, aPs);
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|
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// Restore iterator to initial position
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importFrame->previous();
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break;
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}
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default:
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importsDone = MB_TRUE;
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break;
|
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}
|
|
}
|
|
if (!importsDone)
|
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node = node->getNextSibling();
|
|
}
|
|
|
|
while (node) {
|
|
if (node->getNodeType() == Node::ELEMENT_NODE) {
|
|
Element* element = (Element*)node;
|
|
switch (getElementType(element, aPs)) {
|
|
case XSLType::ATTRIBUTE_SET:
|
|
aPs->addAttributeSet(element, currentFrame);
|
|
break;
|
|
case XSLType::DECIMAL_FORMAT :
|
|
{
|
|
if (!aPs->addDecimalFormat(element)) {
|
|
// Add error to ErrorObserver
|
|
String fName;
|
|
element->getAttr(txXSLTAtoms::name, kNameSpaceID_None,
|
|
fName);
|
|
String err("unable to add ");
|
|
if (fName.isEmpty())
|
|
err.append("default");
|
|
else {
|
|
err.append("\"");
|
|
err.append(fName);
|
|
err.append("\"");
|
|
}
|
|
err.append(" decimal format for xsl:decimal-format");
|
|
notifyError(err);
|
|
}
|
|
break;
|
|
}
|
|
case XSLType::PARAM :
|
|
{
|
|
String name;
|
|
element->getAttr(txXSLTAtoms::name, kNameSpaceID_None,
|
|
name);
|
|
if (name.isEmpty()) {
|
|
notifyError("missing required name attribute for xsl:param");
|
|
break;
|
|
}
|
|
|
|
ExprResult* exprResult
|
|
= processVariable(aSource, element, aPs);
|
|
bindVariable(name, exprResult, MB_TRUE, aPs);
|
|
break;
|
|
}
|
|
case XSLType::IMPORT :
|
|
{
|
|
notifyError("xsl:import only allowed at top of stylesheet");
|
|
break;
|
|
}
|
|
case XSLType::INCLUDE :
|
|
{
|
|
String hrefAttr, href;
|
|
element->getAttr(txXSLTAtoms::href, kNameSpaceID_None,
|
|
hrefAttr);
|
|
URIUtils::resolveHref(hrefAttr, element->getBaseURI(),
|
|
href);
|
|
|
|
processInclude(href, aSource, importFrame, aPs);
|
|
break;
|
|
}
|
|
case XSLType::KEY :
|
|
{
|
|
if (!aPs->addKey(element)) {
|
|
String name;
|
|
element->getAttr(txXSLTAtoms::name, kNameSpaceID_None,
|
|
name);
|
|
String err("error adding key '");
|
|
err.append(name);
|
|
err.append("'");
|
|
notifyError(err);
|
|
}
|
|
break;
|
|
|
|
}
|
|
case XSLType::OUTPUT :
|
|
{
|
|
txOutputFormat& format = currentFrame->mOutputFormat;
|
|
String attValue;
|
|
|
|
if (element->getAttr(txXSLTAtoms::method, kNameSpaceID_None,
|
|
attValue)) {
|
|
if (attValue.isEqual("html"))
|
|
format.mMethod = eHTMLOutput;
|
|
else if (attValue.isEqual("text"))
|
|
format.mMethod = eTextOutput;
|
|
else
|
|
format.mMethod = eXMLOutput;
|
|
}
|
|
|
|
if (element->getAttr(txXSLTAtoms::version, kNameSpaceID_None,
|
|
attValue))
|
|
format.mVersion = attValue;
|
|
|
|
if (element->getAttr(txXSLTAtoms::encoding, kNameSpaceID_None,
|
|
attValue))
|
|
format.mEncoding = attValue;
|
|
|
|
if (element->getAttr(txXSLTAtoms::omitXmlDeclaration,
|
|
kNameSpaceID_None, attValue))
|
|
format.mOmitXMLDeclaration = attValue.isEqual(YES_VALUE) ? eTrue : eFalse;
|
|
|
|
if (element->getAttr(txXSLTAtoms::standalone, kNameSpaceID_None,
|
|
attValue))
|
|
format.mStandalone = attValue.isEqual(YES_VALUE) ? eTrue : eFalse;
|
|
|
|
if (element->getAttr(txXSLTAtoms::doctypePublic,
|
|
kNameSpaceID_None, attValue))
|
|
format.mPublicId = attValue;
|
|
|
|
if (element->getAttr(txXSLTAtoms::doctypeSystem,
|
|
kNameSpaceID_None, attValue))
|
|
format.mSystemId = attValue;
|
|
|
|
if (element->getAttr(txXSLTAtoms::cdataSectionElements,
|
|
kNameSpaceID_None, attValue)) {
|
|
txTokenizer tokens(attValue);
|
|
String token;
|
|
while (tokens.hasMoreTokens()) {
|
|
tokens.nextToken(token);
|
|
if (!XMLUtils::isValidQName(token))
|
|
break;
|
|
|
|
String namePart;
|
|
XMLUtils::getPrefix(token, namePart);
|
|
txAtom* nameAtom = TX_GET_ATOM(namePart);
|
|
PRInt32 nsID = element->lookupNamespaceID(nameAtom);
|
|
TX_IF_RELEASE_ATOM(nameAtom);
|
|
if (nsID == kNameSpaceID_Unknown)
|
|
// XXX ErrorReport: unknown prefix
|
|
break;
|
|
XMLUtils::getLocalPart(token, namePart);
|
|
nameAtom = TX_GET_ATOM(namePart);
|
|
if (!nameAtom)
|
|
// XXX ErrorReport: out of memory
|
|
break;
|
|
txExpandedName* qname = new txExpandedName(nsID, nameAtom);
|
|
TX_RELEASE_ATOM(nameAtom);
|
|
if (!qname)
|
|
// XXX ErrorReport: out of memory
|
|
break;
|
|
format.mCDATASectionElements.add(qname);
|
|
}
|
|
}
|
|
|
|
if (element->getAttr(txXSLTAtoms::indent, kNameSpaceID_None,
|
|
attValue))
|
|
format.mIndent = attValue.isEqual(YES_VALUE) ? eTrue : eFalse;
|
|
|
|
if (element->getAttr(txXSLTAtoms::mediaType, kNameSpaceID_None,
|
|
attValue))
|
|
format.mMediaType = attValue;
|
|
break;
|
|
}
|
|
case XSLType::TEMPLATE :
|
|
aPs->addTemplate(element, currentFrame);
|
|
break;
|
|
case XSLType::VARIABLE :
|
|
{
|
|
String name;
|
|
element->getAttr(txXSLTAtoms::name, kNameSpaceID_None,
|
|
name);
|
|
if (name.isEmpty()) {
|
|
notifyError("missing required name attribute for xsl:variable");
|
|
break;
|
|
}
|
|
ExprResult* exprResult = processVariable(aSource, element, aPs);
|
|
bindVariable(name, exprResult, MB_FALSE, aPs);
|
|
break;
|
|
}
|
|
case XSLType::PRESERVE_SPACE :
|
|
{
|
|
String elements;
|
|
if (!element->getAttr(txXSLTAtoms::elements,
|
|
kNameSpaceID_None, elements)) {
|
|
//-- add error to ErrorObserver
|
|
String err("missing required 'elements' attribute for ");
|
|
err.append("xsl:preserve-space");
|
|
notifyError(err);
|
|
}
|
|
else {
|
|
aPs->shouldStripSpace(elements,
|
|
MB_FALSE,
|
|
currentFrame);
|
|
}
|
|
break;
|
|
}
|
|
case XSLType::STRIP_SPACE :
|
|
{
|
|
String elements;
|
|
if (!element->getAttr(txXSLTAtoms::elements,
|
|
kNameSpaceID_None, elements)) {
|
|
//-- add error to ErrorObserver
|
|
String err("missing required 'elements' attribute for ");
|
|
err.append("xsl:strip-space");
|
|
notifyError(err);
|
|
}
|
|
else {
|
|
aPs->shouldStripSpace(elements,
|
|
MB_TRUE,
|
|
currentFrame);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
// unknown
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
node = node->getNextSibling();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Processes an include or import stylesheet
|
|
* @param aHref URI of stylesheet to process
|
|
* @param aSource source document
|
|
* @param aImportFrame current importFrame iterator
|
|
* @param aPs current ProcessorState
|
|
*/
|
|
void XSLTProcessor::processInclude(String& aHref,
|
|
Document* aSource,
|
|
ListIterator* aImportFrame,
|
|
ProcessorState* aPs)
|
|
{
|
|
// make sure the include isn't included yet
|
|
StackIterator* iter = aPs->getEnteredStylesheets()->iterator();
|
|
if (!iter) {
|
|
// XXX report out of memory
|
|
return;
|
|
}
|
|
|
|
while (iter->hasNext()) {
|
|
if (((String*)iter->next())->isEqual(aHref)) {
|
|
String err("Stylesheet includes itself. URI: ");
|
|
err.append(aHref);
|
|
notifyError(err);
|
|
delete iter;
|
|
return;
|
|
}
|
|
}
|
|
aPs->getEnteredStylesheets()->push(&aHref);
|
|
delete iter;
|
|
|
|
// Load XSL document
|
|
Node* stylesheet = aPs->retrieveDocument(aHref, NULL_STRING);
|
|
if (!stylesheet) {
|
|
String err("Unable to load included stylesheet ");
|
|
err.append(aHref);
|
|
notifyError(err);
|
|
aPs->getEnteredStylesheets()->pop();
|
|
return;
|
|
}
|
|
|
|
switch(stylesheet->getNodeType()) {
|
|
case Node::DOCUMENT_NODE :
|
|
processStylesheet(aSource,
|
|
(Document*)stylesheet,
|
|
aImportFrame,
|
|
aPs);
|
|
break;
|
|
case Node::ELEMENT_NODE :
|
|
processTopLevel(aSource, (Element*)stylesheet, aImportFrame, aPs);
|
|
break;
|
|
default:
|
|
// This should never happen
|
|
String err("Unsupported fragment identifier");
|
|
notifyError(err);
|
|
break;
|
|
}
|
|
|
|
aPs->getEnteredStylesheets()->pop();
|
|
}
|
|
|
|
#ifdef TX_EXE
|
|
|
|
// XXX START
|
|
// XXX Standalone only code. This should move to txStandaloneXSLTProcessor
|
|
// XXX
|
|
|
|
/*
|
|
* Processes the given XML Document using the given XSL document
|
|
* and returns the result tree
|
|
*/
|
|
Document* XSLTProcessor::process(Document& xmlDocument,
|
|
Document& xslDocument)
|
|
{
|
|
Document* result = new Document();
|
|
if (!result)
|
|
// XXX ErrorReport: out of memory
|
|
return 0;
|
|
|
|
/* XXX Disabled for now, need to implement a handler
|
|
that creates a result tree.
|
|
// Start of block to ensure the destruction of the ProcessorState
|
|
// before the destruction of the result document.
|
|
{
|
|
// Create a new ProcessorState
|
|
ProcessorState ps(&aXMLDocument, &aXSLTDocument, &result);
|
|
|
|
// Add error observers
|
|
txListIterator iter(&errorObservers);
|
|
while (iter.hasNext())
|
|
ps.addErrorObserver(*(ErrorObserver*)iter.next());
|
|
|
|
NodeSet nodeSet(&aXMLDocument);
|
|
ps.pushCurrentNode(&aXMLDocument);
|
|
ps.getNodeSetStack()->push(&nodeSet);
|
|
|
|
// Index templates and process top level xsl elements
|
|
txListIterator importFrame(ps.getImportFrames());
|
|
importFrame.addAfter(new ProcessorState::ImportFrame(0));
|
|
if (!importFrame.next()) {
|
|
delete result;
|
|
// XXX ErrorReport: out of memory
|
|
return 0;
|
|
}
|
|
processStylesheet(&aXMLDocument, &aXSLTDocument, &importFrame, &ps);
|
|
|
|
initializeHandlers(&ps);
|
|
// XXX Set the result document on the handler
|
|
|
|
// Process root of XML source document
|
|
startTransform(&aXMLDocument, &ps);
|
|
}
|
|
// End of block to ensure the destruction of the ProcessorState
|
|
// before the destruction of the result document.
|
|
XXX End of disabled section */
|
|
|
|
// Return result Document
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Processes the given XML Document using the given XSL document
|
|
* and prints the results to the given ostream argument
|
|
*/
|
|
void XSLTProcessor::process(Document& aXMLDocument,
|
|
Node& aStylesheet,
|
|
ostream& aOut)
|
|
{
|
|
// Need a result document for creating result tree fragments.
|
|
Document result;
|
|
|
|
// Start of block to ensure the destruction of the ProcessorState
|
|
// before the destruction of the result document.
|
|
{
|
|
// Create a new ProcessorState
|
|
Document* stylesheetDoc = 0;
|
|
Element* stylesheetElem = 0;
|
|
if (aStylesheet.getNodeType() == Node::DOCUMENT_NODE) {
|
|
stylesheetDoc = (Document*)&aStylesheet;
|
|
}
|
|
else {
|
|
stylesheetElem = (Element*)&aStylesheet;
|
|
stylesheetDoc = aStylesheet.getOwnerDocument();
|
|
}
|
|
ProcessorState ps(&aXMLDocument, stylesheetDoc, &result);
|
|
|
|
// Add error observers
|
|
txListIterator iter(&errorObservers);
|
|
while (iter.hasNext())
|
|
ps.addErrorObserver(*(ErrorObserver*)iter.next());
|
|
|
|
NodeSet nodeSet(&aXMLDocument);
|
|
ps.pushCurrentNode(&aXMLDocument);
|
|
ps.getNodeSetStack()->push(&nodeSet);
|
|
|
|
// Index templates and process top level xsl elements
|
|
txListIterator importFrame(ps.getImportFrames());
|
|
importFrame.addAfter(new ProcessorState::ImportFrame(0));
|
|
if (!importFrame.next())
|
|
// XXX ErrorReport: out of memory
|
|
return;
|
|
|
|
if (stylesheetElem)
|
|
processTopLevel(&aXMLDocument, stylesheetElem, &importFrame, &ps);
|
|
else
|
|
processStylesheet(&aXMLDocument, stylesheetDoc, &importFrame, &ps);
|
|
|
|
initializeHandlers(&ps);
|
|
if (mOutputHandler)
|
|
mOutputHandler->setOutputStream(&aOut);
|
|
|
|
// Process root of XML source document
|
|
startTransform(&aXMLDocument, &ps);
|
|
}
|
|
// End of block to ensure the destruction of the ProcessorState
|
|
// before the destruction of the result document.
|
|
}
|
|
|
|
/**
|
|
* Reads an XML Document from the given XML input stream.
|
|
* The XSL Stylesheet is obtained from the XML Documents stylesheet PI.
|
|
* If no Stylesheet is found, an empty document will be the result;
|
|
* otherwise the XML Document is processed using the stylesheet.
|
|
* The result tree is printed to the given ostream argument,
|
|
* will not close the ostream argument
|
|
**/
|
|
void XSLTProcessor::process
|
|
(istream& xmlInput, String& xmlFilename, ostream& out)
|
|
{
|
|
|
|
XMLParser xmlParser;
|
|
Document* xmlDoc = xmlParser.parse(xmlInput, xmlFilename);
|
|
if (!xmlDoc) {
|
|
String err("error reading XML document: ");
|
|
err.append(xmlParser.getErrorString());
|
|
notifyError(err, ErrorObserver::FATAL);
|
|
return;
|
|
}
|
|
//-- Read in XSL document
|
|
String href;
|
|
String errMsg;
|
|
getHrefFromStylesheetPI(*xmlDoc, href);
|
|
istream* xslInput = URIUtils::getInputStream(href,errMsg);
|
|
Document* xslDoc = 0;
|
|
if ( xslInput ) {
|
|
xslDoc = xmlParser.parse(*xslInput, href);
|
|
delete xslInput;
|
|
}
|
|
if (!xslDoc) {
|
|
String err("error reading XSL stylesheet document: ");
|
|
err.append(xmlParser.getErrorString());
|
|
notifyError(err, ErrorObserver::FATAL);
|
|
delete xmlDoc;
|
|
return;
|
|
}
|
|
|
|
Node* stylesheet;
|
|
String frag;
|
|
URIUtils::getFragmentIdentifier(href, frag);
|
|
if (!frag.isEmpty()) {
|
|
stylesheet = xslDoc->getElementById(frag);
|
|
if (!stylesheet) {
|
|
String err("unable to get fragment");
|
|
notifyError(err, ErrorObserver::FATAL);
|
|
delete xmlDoc;
|
|
delete xslDoc;
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
stylesheet = xslDoc;
|
|
}
|
|
|
|
process(*xmlDoc, *stylesheet, out);
|
|
delete xmlDoc;
|
|
delete xslDoc;
|
|
} //-- process
|
|
|
|
/**
|
|
* Reads an XML Document from the given XML input stream, and
|
|
* processes the document using the XSL document derived from
|
|
* the given XSL input stream.
|
|
* The result tree is printed to the given ostream argument,
|
|
* will not close the ostream argument
|
|
**/
|
|
void XSLTProcessor::process
|
|
(istream& xmlInput, String& xmlFilename,
|
|
istream& xslInput, String& xslFilename,
|
|
ostream& out)
|
|
{
|
|
//-- read in XML Document
|
|
XMLParser xmlParser;
|
|
Document* xmlDoc = xmlParser.parse(xmlInput, xmlFilename);
|
|
if (!xmlDoc) {
|
|
String err("error reading XML document: ");
|
|
err.append(xmlParser.getErrorString());
|
|
notifyError(err, ErrorObserver::FATAL);
|
|
return;
|
|
}
|
|
//-- read in XSL Document
|
|
Document* xslDoc = xmlParser.parse(xslInput, xslFilename);
|
|
if (!xslDoc) {
|
|
String err("error reading XSL stylesheet document: ");
|
|
err.append(xmlParser.getErrorString());
|
|
notifyError(err, ErrorObserver::FATAL);
|
|
delete xmlDoc;
|
|
return;
|
|
}
|
|
process(*xmlDoc, *xslDoc, out);
|
|
delete xmlDoc;
|
|
delete xslDoc;
|
|
} //-- process
|
|
|
|
// XXX
|
|
// XXX Standalone only code. This should move to txStandaloneXSLTProcessor
|
|
// XXX END
|
|
|
|
#endif // ifdef TX_EXE
|
|
|
|
//-------------------/
|
|
//- Private Methods -/
|
|
//-------------------/
|
|
|
|
void XSLTProcessor::bindVariable
|
|
(String& name, ExprResult* value, MBool allowShadowing, ProcessorState* ps)
|
|
{
|
|
NamedMap* varSet = (NamedMap*)ps->getVariableSetStack()->peek();
|
|
//-- check for duplicate variable names
|
|
VariableBinding* current = (VariableBinding*) varSet->get(name);
|
|
VariableBinding* binding = 0;
|
|
if (current) {
|
|
binding = current;
|
|
if (current->isShadowingAllowed() ) {
|
|
current->setShadowValue(value);
|
|
}
|
|
else {
|
|
//-- error cannot rebind variables
|
|
String err("cannot rebind variables: ");
|
|
err.append(name);
|
|
err.append(" already exists in this scope.");
|
|
notifyError(err);
|
|
}
|
|
}
|
|
else {
|
|
binding = new VariableBinding(name, value);
|
|
varSet->put((const String&)name, binding);
|
|
}
|
|
if ( allowShadowing ) binding->allowShadowing();
|
|
else binding->disallowShadowing();
|
|
|
|
} //-- bindVariable
|
|
|
|
/**
|
|
* Returns the type of Element represented by the given name
|
|
* @return the XSLType represented by the given element name
|
|
**/
|
|
short XSLTProcessor::getElementType(Element* aElement, ProcessorState* aPs)
|
|
{
|
|
PRInt32 nsID = aElement->getNamespaceID();
|
|
if (nsID != kNameSpaceID_XSLT)
|
|
return XSLType::LITERAL;
|
|
|
|
txAtom* nodeName;
|
|
if (!aElement->getLocalName(&nodeName) || !nodeName)
|
|
return 0;
|
|
|
|
String name;
|
|
TX_GET_ATOM_STRING(nodeName, name);
|
|
TX_RELEASE_ATOM(nodeName);
|
|
|
|
XSLType* xslType = (XSLType*)xslTypes.get(name);
|
|
if (!xslType)
|
|
// ErrorReport: unknown element in the XSLT namespace
|
|
return 0;
|
|
return xslType->type;
|
|
}
|
|
|
|
/**
|
|
* Notifies all registered ErrorObservers of the given error
|
|
**/
|
|
void XSLTProcessor::notifyError(const char* errorMessage) {
|
|
String err(errorMessage);
|
|
notifyError(err, ErrorObserver::NORMAL);
|
|
} //-- notifyError
|
|
|
|
/**
|
|
* Notifies all registered ErrorObservers of the given error
|
|
**/
|
|
void XSLTProcessor::notifyError(String& errorMessage) {
|
|
notifyError(errorMessage, ErrorObserver::NORMAL);
|
|
} //-- notifyError
|
|
|
|
/**
|
|
* Notifies all registered ErrorObservers of the given error
|
|
**/
|
|
void XSLTProcessor::notifyError(String& errorMessage, ErrorObserver::ErrorLevel level) {
|
|
ListIterator* iter = errorObservers.iterator();
|
|
|
|
//-- send fatal errors to default observer if no error obersvers
|
|
//-- have been registered
|
|
if ((!iter->hasNext()) && (level == ErrorObserver::FATAL)) {
|
|
fatalObserver.recieveError(errorMessage, level);
|
|
}
|
|
while ( iter->hasNext() ) {
|
|
ErrorObserver* observer = (ErrorObserver*)iter->next();
|
|
observer->recieveError(errorMessage, level);
|
|
}
|
|
delete iter;
|
|
} //-- notifyError
|
|
|
|
void XSLTProcessor::process(Node* node,
|
|
const String& mode,
|
|
ProcessorState* ps) {
|
|
if (!node)
|
|
return;
|
|
|
|
ProcessorState::ImportFrame *frame;
|
|
Node* xslTemplate = ps->findTemplate(node, mode, &frame);
|
|
processMatchedTemplate(xslTemplate, node, 0, NULL_STRING, frame, ps);
|
|
} //-- process
|
|
|
|
void XSLTProcessor::processAction(Node* aNode,
|
|
Node* aXSLTAction,
|
|
ProcessorState* aPs)
|
|
{
|
|
NS_ASSERTION(aXSLTAction, "We need an action to process.");
|
|
if (!aXSLTAction)
|
|
return;
|
|
|
|
Document* resultDoc = aPs->getResultDocument();
|
|
|
|
short nodeType = aXSLTAction->getNodeType();
|
|
|
|
// Handle text nodes
|
|
if (nodeType == Node::TEXT_NODE ||
|
|
nodeType == Node::CDATA_SECTION_NODE) {
|
|
const String& textValue = aXSLTAction->getNodeValue();
|
|
if (!aPs->isXSLStripSpaceAllowed(aXSLTAction) ||
|
|
!XMLUtils::shouldStripTextnode(textValue)) {
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->characters(textValue);
|
|
}
|
|
return;
|
|
}
|
|
// Handle element nodes
|
|
if (nodeType == Node::ELEMENT_NODE) {
|
|
Expr* expr = 0;
|
|
Element* actionElement = (Element*)aXSLTAction;
|
|
switch (getElementType(actionElement, aPs)) {
|
|
// xsl:apply-imports
|
|
case XSLType::APPLY_IMPORTS:
|
|
{
|
|
ProcessorState::TemplateRule* curr;
|
|
Node* xslTemplate;
|
|
ProcessorState::ImportFrame *frame;
|
|
|
|
curr = aPs->getCurrentTemplateRule();
|
|
if (!curr) {
|
|
String err("apply-imports not allowed here");
|
|
aPs->recieveError(err);
|
|
break;
|
|
}
|
|
|
|
xslTemplate = aPs->findTemplate(aNode, *curr->mMode,
|
|
curr->mFrame, &frame);
|
|
processMatchedTemplate(xslTemplate, aNode, curr->mParams,
|
|
*curr->mMode, frame, aPs);
|
|
|
|
break;
|
|
}
|
|
// xsl:apply-templates
|
|
case XSLType::APPLY_TEMPLATES:
|
|
{
|
|
if (actionElement->hasAttr(txXSLTAtoms::select,
|
|
kNameSpaceID_None))
|
|
expr = aPs->getExpr(actionElement,
|
|
ProcessorState::SelectAttr);
|
|
else
|
|
expr = mNodeExpr;
|
|
|
|
if (!expr)
|
|
break;
|
|
|
|
ExprResult* exprResult = expr->evaluate(aNode, aPs);
|
|
if (!exprResult)
|
|
break;
|
|
|
|
if (exprResult->getResultType() == ExprResult::NODESET) {
|
|
NodeSet* nodeSet = (NodeSet*)exprResult;
|
|
|
|
//-- push nodeSet onto context stack
|
|
aPs->getNodeSetStack()->push(nodeSet);
|
|
|
|
// Look for xsl:sort elements
|
|
txNodeSorter sorter(aPs);
|
|
Node* child = actionElement->getFirstChild();
|
|
while (child) {
|
|
if ((child->getNodeType() == Node::ELEMENT_NODE) &&
|
|
(getElementType((Element*)child, aPs) == XSLType::SORT)) {
|
|
sorter.addSortElement((Element*)child, aNode);
|
|
}
|
|
child = child->getNextSibling();
|
|
}
|
|
sorter.sortNodeSet(nodeSet);
|
|
|
|
// Process xsl:with-param elements
|
|
NamedMap* actualParams = processParameters(actionElement, aNode, aPs);
|
|
|
|
String mode;
|
|
actionElement->getAttr(txXSLTAtoms::mode,
|
|
kNameSpaceID_None, mode);
|
|
for (int i = 0; i < nodeSet->size(); i++) {
|
|
ProcessorState::ImportFrame *frame;
|
|
Node* currNode = nodeSet->get(i);
|
|
Node* xslTemplate;
|
|
xslTemplate = aPs->findTemplate(currNode, mode, &frame);
|
|
processMatchedTemplate(xslTemplate, currNode,
|
|
actualParams, mode, frame, aPs);
|
|
}
|
|
|
|
//-- remove nodeSet from context stack
|
|
aPs->getNodeSetStack()->pop();
|
|
|
|
delete actualParams;
|
|
}
|
|
else {
|
|
notifyError("error processing apply-templates");
|
|
}
|
|
//-- clean up
|
|
delete exprResult;
|
|
break;
|
|
}
|
|
// xsl:attribute
|
|
case XSLType::ATTRIBUTE:
|
|
{
|
|
String nameAttr;
|
|
if (!actionElement->getAttr(txXSLTAtoms::name,
|
|
kNameSpaceID_None, nameAttr)) {
|
|
notifyError("missing required name attribute for xsl:attribute");
|
|
break;
|
|
}
|
|
|
|
// Process name as an AttributeValueTemplate
|
|
String name;
|
|
aPs->processAttrValueTemplate(nameAttr, aNode, name);
|
|
|
|
// Check name validity (must be valid QName and not xmlns)
|
|
if (!XMLUtils::isValidQName(name)) {
|
|
String err("error processing xsl:attribute, ");
|
|
err.append(name);
|
|
err.append(" is not a valid QName.");
|
|
notifyError(err);
|
|
break;
|
|
}
|
|
|
|
txAtom* nameAtom = TX_GET_ATOM(name);
|
|
if (nameAtom == txXMLAtoms::xmlns) {
|
|
TX_RELEASE_ATOM(nameAtom);
|
|
String err("error processing xsl:attribute, name is xmlns.");
|
|
notifyError(err);
|
|
break;
|
|
}
|
|
TX_IF_RELEASE_ATOM(nameAtom);
|
|
|
|
// Determine namespace URI from the namespace attribute or
|
|
// from the prefix of the name (using the xslt action element).
|
|
String resultNs;
|
|
PRInt32 resultNsID = kNameSpaceID_None;
|
|
if (actionElement->getAttr(txXSLTAtoms::_namespace, kNameSpaceID_None,
|
|
resultNs)) {
|
|
String nsURI;
|
|
aPs->processAttrValueTemplate(resultNs, aNode, nsURI);
|
|
resultNsID = resultDoc->namespaceURIToID(nsURI);
|
|
}
|
|
else {
|
|
String prefix;
|
|
XMLUtils::getPrefix(name, prefix);
|
|
txAtom* prefixAtom = TX_GET_ATOM(prefix);
|
|
if (prefixAtom != txXMLAtoms::_empty) {
|
|
if (prefixAtom != txXMLAtoms::xmlns)
|
|
resultNsID = actionElement->lookupNamespaceID(prefixAtom);
|
|
else
|
|
// Cut xmlns: (6 characters)
|
|
name.deleteChars(0, 6);
|
|
}
|
|
TX_IF_RELEASE_ATOM(prefixAtom);
|
|
}
|
|
|
|
// XXX Should verify that this is correct behaviour. Signal error too?
|
|
if (resultNsID == kNameSpaceID_Unknown)
|
|
break;
|
|
|
|
// Compute value
|
|
String value;
|
|
processChildrenAsValue(aNode, actionElement, aPs, MB_TRUE, value);
|
|
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->attribute(name, resultNsID, value);
|
|
break;
|
|
}
|
|
// call-template
|
|
case XSLType::CALL_TEMPLATE:
|
|
{
|
|
String templateName;
|
|
if (actionElement->getAttr(txXSLTAtoms::name,
|
|
kNameSpaceID_None, templateName)) {
|
|
Element* xslTemplate = aPs->getNamedTemplate(templateName);
|
|
if ( xslTemplate ) {
|
|
NamedMap* actualParams = processParameters(actionElement, aNode, aPs);
|
|
processTemplate(aNode, xslTemplate, aPs, actualParams);
|
|
delete actualParams;
|
|
}
|
|
}
|
|
else {
|
|
notifyError("missing required name attribute for xsl:call-template");
|
|
}
|
|
break;
|
|
}
|
|
// xsl:choose
|
|
case XSLType::CHOOSE:
|
|
{
|
|
Node* tmp = actionElement->getFirstChild();
|
|
MBool caseFound = MB_FALSE;
|
|
Element* xslTemplate;
|
|
while (!caseFound && tmp) {
|
|
if (tmp->getNodeType() == Node::ELEMENT_NODE) {
|
|
xslTemplate = (Element*)tmp;
|
|
switch (getElementType(xslTemplate, aPs)) {
|
|
case XSLType::WHEN :
|
|
{
|
|
expr = aPs->getExpr(xslTemplate,
|
|
ProcessorState::TestAttr);
|
|
if (!expr)
|
|
break;
|
|
|
|
ExprResult* result = expr->evaluate(aNode, aPs);
|
|
if (result && result->booleanValue()) {
|
|
processChildren(aNode, xslTemplate, aPs);
|
|
caseFound = MB_TRUE;
|
|
}
|
|
delete result;
|
|
break;
|
|
}
|
|
case XSLType::OTHERWISE:
|
|
processChildren(aNode, xslTemplate, aPs);
|
|
caseFound = MB_TRUE;
|
|
break;
|
|
default: //-- invalid xsl:choose child
|
|
break;
|
|
}
|
|
}
|
|
tmp = tmp->getNextSibling();
|
|
} //-- end for-each child of xsl:choose
|
|
break;
|
|
}
|
|
// xsl:comment
|
|
case XSLType::COMMENT:
|
|
{
|
|
String value;
|
|
processChildrenAsValue(aNode, actionElement, aPs, MB_TRUE, value);
|
|
PRInt32 pos = 0;
|
|
PRInt32 length = value.length();
|
|
while ((pos = value.indexOf('-', pos)) != NOT_FOUND) {
|
|
++pos;
|
|
if ((pos == length) || (value.charAt(pos) == '-'))
|
|
value.insert(pos++, ' ');
|
|
}
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->comment(value);
|
|
break;
|
|
}
|
|
// xsl:copy
|
|
case XSLType::COPY:
|
|
{
|
|
xslCopy(aNode, actionElement, aPs);
|
|
break;
|
|
}
|
|
// xsl:copy-of
|
|
case XSLType::COPY_OF:
|
|
{
|
|
expr = aPs->getExpr(actionElement, ProcessorState::SelectAttr);
|
|
if (!expr)
|
|
break;
|
|
|
|
ExprResult* exprResult = expr->evaluate(aNode, aPs);
|
|
xslCopyOf(exprResult, aPs);
|
|
delete exprResult;
|
|
break;
|
|
|
|
}
|
|
// xsl:element
|
|
case XSLType::ELEMENT:
|
|
{
|
|
String nameAttr;
|
|
if (!actionElement->getAttr(txXSLTAtoms::name,
|
|
kNameSpaceID_None, nameAttr)) {
|
|
notifyError("missing required name attribute for xsl:element");
|
|
break;
|
|
}
|
|
|
|
// Process name as an AttributeValueTemplate
|
|
String name;
|
|
aPs->processAttrValueTemplate(nameAttr, aNode, name);
|
|
|
|
// Check name validity (must be valid QName and not xmlns)
|
|
if (!XMLUtils::isValidQName(name)) {
|
|
String err("error processing xsl:element, '");
|
|
err.append(name);
|
|
err.append("' is not a valid QName.");
|
|
notifyError(err);
|
|
// XXX We should processChildren without creating attributes or
|
|
// namespace nodes.
|
|
break;
|
|
}
|
|
|
|
// Determine namespace URI from the namespace attribute or
|
|
// from the prefix of the name (using the xslt action element).
|
|
String resultNs;
|
|
PRInt32 resultNsID;
|
|
if (actionElement->getAttr(txXSLTAtoms::_namespace, kNameSpaceID_None, resultNs)) {
|
|
String nsURI;
|
|
aPs->processAttrValueTemplate(resultNs, aNode, nsURI);
|
|
if (nsURI.isEmpty())
|
|
resultNsID = kNameSpaceID_None;
|
|
else
|
|
resultNsID = resultDoc->namespaceURIToID(nsURI);
|
|
}
|
|
else {
|
|
String prefix;
|
|
XMLUtils::getPrefix(name, prefix);
|
|
txAtom* prefixAtom = TX_GET_ATOM(prefix);
|
|
resultNsID = actionElement->lookupNamespaceID(prefixAtom);
|
|
TX_IF_RELEASE_ATOM(prefixAtom);
|
|
}
|
|
|
|
if (resultNsID == kNameSpaceID_Unknown) {
|
|
String err("error processing xsl:element, can't resolve prefix on'");
|
|
err.append(name);
|
|
err.append("'.");
|
|
notifyError(err);
|
|
// XXX We should processChildren without creating attributes or
|
|
// namespace nodes.
|
|
break;
|
|
}
|
|
|
|
startElement(aPs, name, resultNsID);
|
|
processAttributeSets(actionElement, aNode, aPs);
|
|
processChildren(aNode, actionElement, aPs);
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->endElement(name, resultNsID);
|
|
break;
|
|
}
|
|
// xsl:for-each
|
|
case XSLType::FOR_EACH:
|
|
{
|
|
expr = aPs->getExpr(actionElement, ProcessorState::SelectAttr);
|
|
if (!expr)
|
|
break;
|
|
|
|
ExprResult* exprResult = expr->evaluate(aNode, aPs);
|
|
if (!exprResult)
|
|
break;
|
|
|
|
if (exprResult->getResultType() == ExprResult::NODESET) {
|
|
NodeSet* nodeSet = (NodeSet*)exprResult;
|
|
|
|
//-- push nodeSet onto context stack
|
|
aPs->getNodeSetStack()->push(nodeSet);
|
|
|
|
// Look for xsl:sort elements
|
|
txNodeSorter sorter(aPs);
|
|
Node* child = actionElement->getFirstChild();
|
|
while (child) {
|
|
int nodeType = child->getNodeType();
|
|
if (nodeType == Node::ELEMENT_NODE) {
|
|
if (getElementType((Element*)child, aPs) == XSLType::SORT) {
|
|
sorter.addSortElement((Element*)child, aNode);
|
|
}
|
|
else {
|
|
// xsl:sort must occur first
|
|
break;
|
|
}
|
|
}
|
|
else if ((nodeType == Node::TEXT_NODE ||
|
|
nodeType == Node::CDATA_SECTION_NODE) &&
|
|
!XMLUtils::isWhitespace(child->getNodeValue())) {
|
|
break;
|
|
}
|
|
|
|
child = child->getNextSibling();
|
|
}
|
|
sorter.sortNodeSet(nodeSet);
|
|
|
|
// Set current template to null
|
|
ProcessorState::TemplateRule *oldTemplate;
|
|
oldTemplate = aPs->getCurrentTemplateRule();
|
|
aPs->setCurrentTemplateRule(0);
|
|
|
|
for (int i = 0; i < nodeSet->size(); i++) {
|
|
Node* currNode = nodeSet->get(i);
|
|
aPs->pushCurrentNode(currNode);
|
|
processChildren(currNode, actionElement, aPs);
|
|
aPs->popCurrentNode();
|
|
}
|
|
|
|
aPs->setCurrentTemplateRule(oldTemplate);
|
|
|
|
// Remove nodeSet from context stack
|
|
aPs->getNodeSetStack()->pop();
|
|
}
|
|
else {
|
|
notifyError("error processing for-each");
|
|
}
|
|
//-- clean up exprResult
|
|
delete exprResult;
|
|
break;
|
|
}
|
|
// xsl:if
|
|
case XSLType::IF:
|
|
{
|
|
expr = aPs->getExpr(actionElement, ProcessorState::TestAttr);
|
|
if (!expr)
|
|
break;
|
|
|
|
ExprResult* exprResult = expr->evaluate(aNode, aPs);
|
|
if (!exprResult)
|
|
break;
|
|
|
|
if ( exprResult->booleanValue() ) {
|
|
processChildren(aNode, actionElement, aPs);
|
|
}
|
|
delete exprResult;
|
|
break;
|
|
}
|
|
// xsl:message
|
|
case XSLType::MESSAGE:
|
|
{
|
|
String message;
|
|
processChildrenAsValue(aNode, actionElement, aPs, MB_FALSE, message);
|
|
// We should add a MessageObserver class
|
|
#ifdef TX_EXE
|
|
cout << "xsl:message - "<< message << endl;
|
|
#else
|
|
nsresult rv;
|
|
nsCOMPtr<nsIConsoleService> consoleSvc =
|
|
do_GetService("@mozilla.org/consoleservice;1", &rv);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "xsl:message couldn't get console service");
|
|
if (consoleSvc) {
|
|
nsAutoString logString(NS_LITERAL_STRING("xsl:message - "));
|
|
logString.Append(message.getConstNSString());
|
|
rv = consoleSvc->LogStringMessage(logString.get());
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "xsl:message couldn't log");
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
// xsl:number
|
|
case XSLType::NUMBER:
|
|
{
|
|
String result;
|
|
Numbering::doNumbering(actionElement, result, aNode, aPs);
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->characters(result);
|
|
break;
|
|
}
|
|
// xsl:param
|
|
case XSLType::PARAM:
|
|
{
|
|
// Ignore in this loop (already processed)
|
|
break;
|
|
}
|
|
// xsl:processing-instruction
|
|
case XSLType::PROC_INST:
|
|
{
|
|
String nameAttr;
|
|
if (!actionElement->getAttr(txXSLTAtoms::name,
|
|
kNameSpaceID_None, nameAttr)) {
|
|
String err("missing required name attribute for xsl:");
|
|
err.append(PROC_INST);
|
|
notifyError(err);
|
|
break;
|
|
}
|
|
|
|
// Process name as an AttributeValueTemplate
|
|
String name;
|
|
aPs->processAttrValueTemplate(nameAttr, aNode, name);
|
|
|
|
// Check name validity (must be valid NCName and a PITarget)
|
|
// XXX Need to check for NCName and PITarget
|
|
if (!XMLUtils::isValidQName(name)) {
|
|
String err("error processing xsl:");
|
|
err.append(PROC_INST);
|
|
err.append(", '");
|
|
err.append(name);
|
|
err.append("' is not a valid QName.");
|
|
notifyError(err);
|
|
}
|
|
|
|
// Compute value
|
|
String value;
|
|
processChildrenAsValue(aNode, actionElement, aPs, MB_TRUE, value);
|
|
XMLUtils::normalizePIValue(value);
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->processingInstruction(name, value);
|
|
break;
|
|
}
|
|
// xsl:sort
|
|
case XSLType::SORT:
|
|
{
|
|
// Ignore in this loop
|
|
break;
|
|
}
|
|
// xsl:text
|
|
case XSLType::TEXT:
|
|
{
|
|
String data;
|
|
XMLDOMUtils::getNodeValue(actionElement, data);
|
|
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
#ifdef TX_EXE
|
|
String aValue;
|
|
if ((mResultHandler == mOutputHandler) &&
|
|
actionElement->getAttr(txXSLTAtoms::disableOutputEscaping,
|
|
kNameSpaceID_None, aValue) &&
|
|
aValue.isEqual(YES_VALUE))
|
|
mOutputHandler->charactersNoOutputEscaping(data);
|
|
else
|
|
mResultHandler->characters(data);
|
|
#else
|
|
mResultHandler->characters(data);
|
|
#endif
|
|
break;
|
|
}
|
|
//-- xsl:value-of
|
|
case XSLType::VALUE_OF :
|
|
{
|
|
expr = aPs->getExpr(actionElement, ProcessorState::SelectAttr);
|
|
if (!expr)
|
|
break;
|
|
|
|
ExprResult* exprResult = expr->evaluate(aNode, aPs);
|
|
String value;
|
|
if (!exprResult) {
|
|
notifyError("null ExprResult");
|
|
break;
|
|
}
|
|
exprResult->stringValue(value);
|
|
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
#ifdef TX_EXE
|
|
String aValue;
|
|
if ((mResultHandler == mOutputHandler) &&
|
|
actionElement->getAttr(txXSLTAtoms::disableOutputEscaping,
|
|
kNameSpaceID_None, aValue) &&
|
|
aValue.isEqual(YES_VALUE))
|
|
mOutputHandler->charactersNoOutputEscaping(value);
|
|
else
|
|
mResultHandler->characters(value);
|
|
#else
|
|
mResultHandler->characters(value);
|
|
#endif
|
|
delete exprResult;
|
|
break;
|
|
}
|
|
// xsl:variable
|
|
case XSLType::VARIABLE:
|
|
{
|
|
String name;
|
|
if (!actionElement->getAttr(txXSLTAtoms::name,
|
|
kNameSpaceID_None, name)) {
|
|
notifyError("missing required name attribute for xsl:variable");
|
|
break;
|
|
}
|
|
ExprResult* exprResult = processVariable(aNode, actionElement, aPs);
|
|
bindVariable(name, exprResult, MB_FALSE, aPs);
|
|
break;
|
|
}
|
|
// Literal result element
|
|
default:
|
|
{
|
|
// XXX TODO Check for excluded namespaces and aliased namespaces (element and attributes)
|
|
PRInt32 nsID = aXSLTAction->getNamespaceID();
|
|
const String& nodeName = aXSLTAction->getNodeName();
|
|
startElement(aPs, nodeName, nsID);
|
|
|
|
processAttributeSets(actionElement, aNode, aPs);
|
|
|
|
// Handle attributes
|
|
NamedNodeMap* atts = actionElement->getAttributes();
|
|
|
|
if (atts) {
|
|
// Process all non XSLT attributes
|
|
PRUint32 i;
|
|
for (i = 0; i < atts->getLength(); ++i) {
|
|
Attr* attr = (Attr*)atts->item(i);
|
|
if (attr->getNamespaceID() == kNameSpaceID_XSLT)
|
|
continue;
|
|
// Process Attribute Value Templates
|
|
String value;
|
|
aPs->processAttrValueTemplate(attr->getValue(), aNode, value);
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->attribute(attr->getName(), attr->getNamespaceID(), value);
|
|
}
|
|
}
|
|
|
|
// Process children
|
|
processChildren(aNode, actionElement, aPs);
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->endElement(nodeName, nsID);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes the attribute sets specified in the use-attribute-sets attribute
|
|
* of the element specified in aElement
|
|
**/
|
|
void XSLTProcessor::processAttributeSets(Element* aElement, Node* aNode, ProcessorState* aPs)
|
|
{
|
|
String names;
|
|
PRInt32 namespaceID;
|
|
if (aElement->getNamespaceID() == kNameSpaceID_XSLT)
|
|
namespaceID = kNameSpaceID_None;
|
|
else
|
|
namespaceID = kNameSpaceID_XSLT;
|
|
if (!aElement->getAttr(txXSLTAtoms::useAttributeSets, namespaceID, names) || names.isEmpty())
|
|
return;
|
|
|
|
// Split names
|
|
txTokenizer tokenizer(names);
|
|
String name;
|
|
while (tokenizer.hasMoreTokens()) {
|
|
tokenizer.nextToken(name);
|
|
StackIterator *attributeSets = mAttributeSetStack.iterator();
|
|
NS_ASSERTION(attributeSets, "Out of memory");
|
|
if (!attributeSets)
|
|
return;
|
|
while (attributeSets->hasNext()) {
|
|
String* test = (String*)attributeSets->next();
|
|
if (test->isEqual(name))
|
|
return;
|
|
}
|
|
delete attributeSets;
|
|
|
|
NodeSet* attSet = aPs->getAttributeSet(name);
|
|
if (attSet) {
|
|
int i;
|
|
//-- issue: we still need to handle the following fix cleaner, since
|
|
//-- attribute sets are merged, a different parent could exist
|
|
//-- for different xsl:attribute nodes. I will probably create
|
|
//-- an AttributeSet object, which will handle this case better. - Keith V.
|
|
if (attSet->size() > 0) {
|
|
mAttributeSetStack.push(&name);
|
|
Element* parent = (Element*) attSet->get(0)->getXPathParent();
|
|
processAttributeSets(parent, aNode, aPs);
|
|
mAttributeSetStack.pop();
|
|
}
|
|
for (i = 0; i < attSet->size(); i++)
|
|
processAction(aNode, attSet->get(i), aPs);
|
|
delete attSet;
|
|
}
|
|
}
|
|
} //-- processAttributeSets
|
|
|
|
/**
|
|
* Processes the xsl:with-param child elements of the given xsl action.
|
|
* A VariableBinding is created for each actual parameter, and
|
|
* added to the result NamedMap. At this point, we do not care
|
|
* whether the actual parameter matches a formal parameter of the template
|
|
* or not.
|
|
* @param xslAction the action node that takes parameters (xsl:call-template
|
|
* or xsl:apply-templates
|
|
* @param context the current context node
|
|
* @ps the current ProcessorState
|
|
* @return a NamedMap of variable bindings
|
|
**/
|
|
NamedMap* XSLTProcessor::processParameters(Element* xslAction, Node* context, ProcessorState* ps)
|
|
{
|
|
NamedMap* params = new NamedMap();
|
|
|
|
if (!xslAction || !params)
|
|
return params;
|
|
|
|
params->setObjectDeletion(MB_TRUE);
|
|
|
|
//-- handle xsl:with-param elements
|
|
Node* tmpNode = xslAction->getFirstChild();
|
|
while (tmpNode) {
|
|
int nodeType = tmpNode->getNodeType();
|
|
if ( nodeType == Node::ELEMENT_NODE ) {
|
|
Element* action = (Element*)tmpNode;
|
|
short xslType = getElementType(action, ps);
|
|
if ( xslType == XSLType::WITH_PARAM ) {
|
|
String name;
|
|
if (!action->getAttr(txXSLTAtoms::name,
|
|
kNameSpaceID_None, name)) {
|
|
notifyError("missing required name attribute for xsl:with-param");
|
|
}
|
|
else {
|
|
ExprResult* exprResult = processVariable(context, action, ps);
|
|
if (params->get(name)) {
|
|
//-- error cannot rebind parameters
|
|
String err("value for parameter '");
|
|
err.append(name);
|
|
err.append("' specified more than once.");
|
|
notifyError(err);
|
|
}
|
|
else {
|
|
VariableBinding* binding = new VariableBinding(name, exprResult);
|
|
params->put((const String&)name, binding);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
tmpNode = tmpNode->getNextSibling();
|
|
}
|
|
return params;
|
|
} //-- processParameters
|
|
|
|
/**
|
|
* Processes the children of the specified element using the given context node
|
|
* and ProcessorState
|
|
* @param node the context node
|
|
* @param xslElement the template to be processed. Must be != NULL
|
|
* @param ps the current ProcessorState
|
|
**/
|
|
void XSLTProcessor::processChildren(Node* node, Element* xslElement, ProcessorState* ps) {
|
|
|
|
NS_ASSERTION(xslElement,"xslElement is NULL in call to XSLTProcessor::processChildren!");
|
|
|
|
Stack* bindings = ps->getVariableSetStack();
|
|
NamedMap localBindings;
|
|
localBindings.setObjectDeletion(MB_TRUE);
|
|
bindings->push(&localBindings);
|
|
Node* child = xslElement->getFirstChild();
|
|
while (child) {
|
|
processAction(node, child, ps);
|
|
child = child->getNextSibling();
|
|
}
|
|
bindings->pop();
|
|
} //-- processChildren
|
|
|
|
void
|
|
XSLTProcessor::processChildrenAsValue(Node* aNode,
|
|
Element* aElement,
|
|
ProcessorState* aPs,
|
|
MBool aOnlyText,
|
|
String& aValue)
|
|
{
|
|
txXMLEventHandler* previousHandler = mResultHandler;
|
|
txTextHandler valueHandler(aValue, aOnlyText);
|
|
mResultHandler = &valueHandler;
|
|
processChildren(aNode, aElement, aPs);
|
|
mResultHandler = previousHandler;
|
|
}
|
|
|
|
/**
|
|
* Processes the specified template using the given context, ProcessorState, and actual
|
|
* parameters.
|
|
* @param xslTemplate the template to be processed
|
|
* @ps the current ProcessorState
|
|
* @param params a NamedMap of variable bindings that contain the actual parameters for
|
|
* the template. Parameters that do not match a formal parameter of the template (i.e.
|
|
* there is no corresponding xsl:param in the template definition) will be discarded.
|
|
**/
|
|
void XSLTProcessor::processTemplate(Node* node, Node* xslTemplate, ProcessorState* ps, NamedMap* params) {
|
|
|
|
NS_ASSERTION(xslTemplate, "xslTemplate is NULL in call to XSLTProcessor::processTemplate!");
|
|
|
|
Stack* bindings = ps->getVariableSetStack();
|
|
NamedMap localBindings;
|
|
localBindings.setObjectDeletion(MB_TRUE);
|
|
bindings->push(&localBindings);
|
|
processTemplateParams(xslTemplate, node, ps, params);
|
|
Node* tmp = xslTemplate->getFirstChild();
|
|
while (tmp) {
|
|
processAction(node,tmp,ps);
|
|
tmp = tmp->getNextSibling();
|
|
}
|
|
|
|
if (params) {
|
|
StringList* keys = params->keys();
|
|
if (keys) {
|
|
StringListIterator keyIter(keys);
|
|
String* key;
|
|
while((key = keyIter.next())) {
|
|
VariableBinding *var, *param;
|
|
var = (VariableBinding*)localBindings.get(*key);
|
|
param = (VariableBinding*)params->get(*key);
|
|
if (var && var->getValue() == param->getValue()) {
|
|
// Don't delete the contained ExprResult since it's
|
|
// not ours
|
|
var->setValue(0);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// out of memory so we can't get the keys
|
|
// don't delete any variables since it's better we leak then
|
|
// crash
|
|
localBindings.setObjectDeletion(MB_FALSE);
|
|
}
|
|
delete keys;
|
|
}
|
|
|
|
bindings->pop();
|
|
} //-- processTemplate
|
|
|
|
void XSLTProcessor::processMatchedTemplate(Node* aXslTemplate,
|
|
Node* aNode,
|
|
NamedMap* aParams,
|
|
const String& aMode,
|
|
ProcessorState::ImportFrame* aFrame,
|
|
ProcessorState* aPs)
|
|
{
|
|
if (aXslTemplate) {
|
|
ProcessorState::TemplateRule *oldTemplate, newTemplate;
|
|
oldTemplate = aPs->getCurrentTemplateRule();
|
|
newTemplate.mFrame = aFrame;
|
|
newTemplate.mMode = &aMode;
|
|
newTemplate.mParams = aParams;
|
|
aPs->setCurrentTemplateRule(&newTemplate);
|
|
|
|
aPs->pushCurrentNode(aNode);
|
|
processTemplate(aNode, aXslTemplate, aPs, aParams);
|
|
aPs->popCurrentNode();
|
|
|
|
aPs->setCurrentTemplateRule(oldTemplate);
|
|
}
|
|
else {
|
|
processDefaultTemplate(aNode, aPs, aMode);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Invokes the default template for the specified node
|
|
* @param node context node
|
|
* @param ps current ProcessorState
|
|
* @param mode template mode
|
|
**/
|
|
void XSLTProcessor::processDefaultTemplate(Node* node,
|
|
ProcessorState* ps,
|
|
const String& mode)
|
|
{
|
|
NS_ASSERTION(node, "context node is NULL in call to XSLTProcessor::processTemplate!");
|
|
|
|
switch(node->getNodeType())
|
|
{
|
|
case Node::ELEMENT_NODE :
|
|
case Node::DOCUMENT_NODE :
|
|
{
|
|
if (!mNodeExpr)
|
|
break;
|
|
|
|
ExprResult* exprResult = mNodeExpr->evaluate(node, ps);
|
|
if (!exprResult ||
|
|
exprResult->getResultType() != ExprResult::NODESET) {
|
|
notifyError("None-nodeset returned while processing default template");
|
|
delete exprResult;
|
|
return;
|
|
}
|
|
|
|
NodeSet* nodeSet = (NodeSet*)exprResult;
|
|
|
|
//-- push nodeSet onto context stack
|
|
ps->getNodeSetStack()->push(nodeSet);
|
|
for (int i = 0; i < nodeSet->size(); i++) {
|
|
Node* currNode = nodeSet->get(i);
|
|
|
|
ProcessorState::ImportFrame *frame;
|
|
Node* xslTemplate = ps->findTemplate(currNode, mode, &frame);
|
|
processMatchedTemplate(xslTemplate, currNode, 0, mode, frame,
|
|
ps);
|
|
}
|
|
//-- remove nodeSet from context stack
|
|
ps->getNodeSetStack()->pop();
|
|
delete exprResult;
|
|
break;
|
|
}
|
|
case Node::ATTRIBUTE_NODE :
|
|
case Node::TEXT_NODE :
|
|
case Node::CDATA_SECTION_NODE :
|
|
{
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->characters(node->getNodeValue());
|
|
break;
|
|
}
|
|
default:
|
|
// on all other nodetypes (including namespace nodes)
|
|
// we do nothing
|
|
break;
|
|
}
|
|
} //-- processDefaultTemplate
|
|
|
|
/**
|
|
* Builds the initial bindings for the template. Formal parameters (xsl:param) that
|
|
* have a corresponding binding in actualParams are bound to the actual parameter value,
|
|
* otherwise to their default value. Actual parameters that do not match any formal
|
|
* parameter are discarded.
|
|
* @param xslTemplate the template node
|
|
* @param context the current context node
|
|
* @param ps the current ProcessorState
|
|
* @param actualParams a NamedMap of variable bindings that contains the actual parameters
|
|
**/
|
|
void XSLTProcessor::processTemplateParams
|
|
(Node* xslTemplate, Node* context, ProcessorState* ps, NamedMap* actualParams)
|
|
{
|
|
|
|
if ( xslTemplate ) {
|
|
Node* tmpNode = xslTemplate->getFirstChild();
|
|
//-- handle params
|
|
while (tmpNode) {
|
|
int nodeType = tmpNode->getNodeType();
|
|
if ( nodeType == Node::ELEMENT_NODE ) {
|
|
Element* action = (Element*)tmpNode;
|
|
short xslType = getElementType(action, ps);
|
|
if ( xslType == XSLType::PARAM ) {
|
|
String name;
|
|
if (!action->getAttr(txXSLTAtoms::name,
|
|
kNameSpaceID_None, name)) {
|
|
notifyError("missing required name attribute for xsl:param");
|
|
}
|
|
else {
|
|
VariableBinding* binding = 0;
|
|
if (actualParams) {
|
|
binding = (VariableBinding*) actualParams->get((const String&)name);
|
|
}
|
|
if (binding) {
|
|
// the formal parameter has a corresponding actual parameter, use it
|
|
ExprResult* exprResult = binding->getValue();
|
|
bindVariable(name, exprResult, MB_FALSE, ps);
|
|
}
|
|
else {
|
|
// no actual param, use default
|
|
ExprResult* exprResult = processVariable(context, action, ps);
|
|
bindVariable(name, exprResult, MB_FALSE, ps);
|
|
}
|
|
}
|
|
}
|
|
else break;
|
|
}
|
|
else if (nodeType == Node::TEXT_NODE ||
|
|
nodeType == Node::CDATA_SECTION_NODE) {
|
|
if (!XMLUtils::isWhitespace(tmpNode->getNodeValue()))
|
|
break;
|
|
}
|
|
tmpNode = tmpNode->getNextSibling();
|
|
}
|
|
}
|
|
} //-- processTemplateParams
|
|
|
|
|
|
/**
|
|
* processes the xslVariable parameter as an xsl:variable using the given context,
|
|
* and ProcessorState.
|
|
* If the xslTemplate contains an "expr" attribute, the attribute is evaluated
|
|
* as an Expression and the ExprResult is returned. Otherwise the xslVariable is
|
|
* is processed as a template, and it's result is converted into an ExprResult
|
|
* @return an ExprResult
|
|
**/
|
|
ExprResult* XSLTProcessor::processVariable
|
|
(Node* node, Element* xslVariable, ProcessorState* ps)
|
|
{
|
|
|
|
if ( !xslVariable ) {
|
|
return new StringResult("unable to process variable");
|
|
}
|
|
|
|
//-- check for select attribute
|
|
if (xslVariable->hasAttr(txXSLTAtoms::select, kNameSpaceID_None)) {
|
|
Expr* expr = ps->getExpr(xslVariable, ProcessorState::SelectAttr);
|
|
if (!expr)
|
|
return new StringResult("unable to process variable");
|
|
return expr->evaluate(node, ps);
|
|
}
|
|
else if (xslVariable->hasChildNodes()) {
|
|
txResultTreeFragment* rtf = new txResultTreeFragment();
|
|
if (!rtf)
|
|
// XXX ErrorReport: Out of memory
|
|
return 0;
|
|
txXMLEventHandler* previousHandler = mResultHandler;
|
|
txRtfHandler rtfHandler(ps->getResultDocument(), rtf);
|
|
mResultHandler = &rtfHandler;
|
|
processChildren(node, xslVariable, ps);
|
|
//NS_ASSERTION(previousHandler, "Setting mResultHandler to NULL!");
|
|
mResultHandler = previousHandler;
|
|
return rtf;
|
|
}
|
|
else {
|
|
return new StringResult("");
|
|
}
|
|
} //-- processVariable
|
|
|
|
void XSLTProcessor::startTransform(Node* aNode, ProcessorState* aPs)
|
|
{
|
|
mHaveDocumentElement = MB_FALSE;
|
|
mOutputHandler->startDocument();
|
|
process(aNode, NULL_STRING, aPs);
|
|
mOutputHandler->endDocument();
|
|
}
|
|
|
|
MBool XSLTProcessor::initializeHandlers(ProcessorState* aPs)
|
|
{
|
|
txListIterator frameIter(aPs->getImportFrames());
|
|
ProcessorState::ImportFrame* frame;
|
|
txOutputFormat* outputFormat = aPs->getOutputFormat();
|
|
while ((frame = (ProcessorState::ImportFrame*)frameIter.next()))
|
|
outputFormat->merge(frame->mOutputFormat);
|
|
|
|
delete mOutputHandler;
|
|
#ifdef TX_EXE
|
|
switch (outputFormat->mMethod) {
|
|
case eMethodNotSet:
|
|
case eXMLOutput:
|
|
{
|
|
mOutputHandler = new txXMLOutput();
|
|
break;
|
|
}
|
|
case eHTMLOutput:
|
|
{
|
|
mOutputHandler = new txHTMLOutput();
|
|
break;
|
|
}
|
|
case eTextOutput:
|
|
{
|
|
mOutputHandler = new txTextOutput();
|
|
break;
|
|
}
|
|
}
|
|
#else
|
|
switch (outputFormat->mMethod) {
|
|
case eMethodNotSet:
|
|
case eXMLOutput:
|
|
case eHTMLOutput:
|
|
{
|
|
mOutputHandler = new txMozillaXMLOutput();
|
|
break;
|
|
}
|
|
case eTextOutput:
|
|
{
|
|
mOutputHandler = new txMozillaTextOutput();
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
mResultHandler = mOutputHandler;
|
|
if (!mOutputHandler)
|
|
return MB_FALSE;
|
|
mOutputHandler->setOutputFormat(outputFormat);
|
|
return MB_TRUE;
|
|
}
|
|
|
|
/**
|
|
* Performs the xsl:copy action as specified in the XSLT specification
|
|
*/
|
|
void XSLTProcessor::xslCopy(Node* aNode, Element* aAction, ProcessorState* aPs)
|
|
{
|
|
if (!aNode)
|
|
return;
|
|
|
|
switch (aNode->getNodeType()) {
|
|
case Node::DOCUMENT_NODE:
|
|
{
|
|
// Just process children
|
|
processChildren(aNode, aAction, aPs);
|
|
break;
|
|
}
|
|
case Node::ELEMENT_NODE:
|
|
{
|
|
Element* element = (Element*)aNode;
|
|
String nodeName = element->getNodeName();
|
|
PRInt32 nsID = element->getNamespaceID();
|
|
|
|
startElement(aPs, nodeName, nsID);
|
|
// XXX copy namespace attributes once we have them
|
|
processAttributeSets(aAction, aNode, aPs);
|
|
processChildren(aNode, aAction, aPs);
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->endElement(nodeName, nsID);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
copyNode(aNode, aPs);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Performs the xsl:copy-of action as specified in the XSLT specification
|
|
*/
|
|
void XSLTProcessor::xslCopyOf(ExprResult* aExprResult, ProcessorState* aPs)
|
|
{
|
|
if (!aExprResult)
|
|
return;
|
|
|
|
switch (aExprResult->getResultType()) {
|
|
case ExprResult::NODESET:
|
|
{
|
|
NodeSet* nodes = (NodeSet*)aExprResult;
|
|
int i;
|
|
for (i = 0; i < nodes->size(); i++) {
|
|
Node* node = nodes->get(i);
|
|
copyNode(node, aPs);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
String value;
|
|
aExprResult->stringValue(value);
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->characters(value);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Copy a node. For document nodes and document fragments, copy the children.
|
|
*/
|
|
void XSLTProcessor::copyNode(Node* aNode, ProcessorState* aPs)
|
|
{
|
|
if (!aNode)
|
|
return;
|
|
|
|
switch (aNode->getNodeType()) {
|
|
case Node::ATTRIBUTE_NODE:
|
|
{
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->attribute(aNode->getNodeName(), aNode->getNamespaceID(),
|
|
aNode->getNodeValue());
|
|
break;
|
|
}
|
|
case Node::COMMENT_NODE:
|
|
{
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->comment(((Comment*)aNode)->getData());
|
|
break;
|
|
}
|
|
case Node::DOCUMENT_NODE:
|
|
case Node::DOCUMENT_FRAGMENT_NODE:
|
|
{
|
|
// Copy children
|
|
Node* child = aNode->getFirstChild();
|
|
while (child) {
|
|
copyNode(child, aPs);
|
|
child = child->getNextSibling();
|
|
}
|
|
break;
|
|
}
|
|
case Node::ELEMENT_NODE:
|
|
{
|
|
Element* element = (Element*)aNode;
|
|
const String& name = element->getNodeName();
|
|
PRInt32 nsID = element->getNamespaceID();
|
|
startElement(aPs, name, nsID);
|
|
|
|
// Copy attributes
|
|
NamedNodeMap* attList = element->getAttributes();
|
|
if (attList) {
|
|
PRUint32 i = 0;
|
|
for (i = 0; i < attList->getLength(); i++) {
|
|
Attr* attr = (Attr*)attList->item(i);
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->attribute(attr->getName(), attr->getNamespaceID(),
|
|
attr->getValue());
|
|
}
|
|
}
|
|
|
|
// Copy children
|
|
Node* child = element->getFirstChild();
|
|
while (child) {
|
|
copyNode(child, aPs);
|
|
child = child->getNextSibling();
|
|
}
|
|
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->endElement(name, nsID);
|
|
break;
|
|
}
|
|
case Node::PROCESSING_INSTRUCTION_NODE:
|
|
{
|
|
ProcessingInstruction* pi = (ProcessingInstruction*)aNode;
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->processingInstruction(pi->getTarget(), pi->getData());
|
|
break;
|
|
}
|
|
case Node::TEXT_NODE:
|
|
case Node::CDATA_SECTION_NODE:
|
|
{
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->characters(((CharacterData*)aNode)->getData());
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
XSLTProcessor::startElement(ProcessorState* aPs, const String& aName, const PRInt32 aNsID)
|
|
{
|
|
if (!mHaveDocumentElement && (mResultHandler == mOutputHandler)) {
|
|
txOutputFormat* format = aPs->getOutputFormat();
|
|
// XXX Should check for whitespace-only sibling text nodes
|
|
if ((format->mMethod == eMethodNotSet)
|
|
&& (aNsID == kNameSpaceID_None)
|
|
&& aName.isEqualIgnoreCase("html")) {
|
|
// Switch to html output mode according to the XSLT spec.
|
|
format->mMethod = eHTMLOutput;
|
|
#ifdef TX_EXE
|
|
ostream* out;
|
|
mOutputHandler->getOutputStream(&out);
|
|
delete mOutputHandler;
|
|
mOutputHandler = new txHTMLOutput();
|
|
NS_ASSERTION(mOutputHandler, "Setting mResultHandler to NULL!");
|
|
mOutputHandler->setOutputStream(out);
|
|
mResultHandler = mOutputHandler;
|
|
#endif
|
|
mOutputHandler->setOutputFormat(format);
|
|
}
|
|
mHaveDocumentElement = MB_TRUE;
|
|
}
|
|
NS_ASSERTION(mResultHandler, "mResultHandler must not be NULL!");
|
|
mResultHandler->startElement(aName, aNsID);
|
|
}
|
|
|
|
#ifndef TX_EXE
|
|
|
|
// XXX START
|
|
// XXX Mozilla module only code. This should move to txMozillaXSLTProcessor
|
|
// XXX
|
|
|
|
NS_IMETHODIMP
|
|
XSLTProcessor::TransformDocument(nsIDOMNode* aSourceDOM,
|
|
nsIDOMNode* aStyleDOM,
|
|
nsIDOMDocument* aOutputDoc,
|
|
nsIObserver* aObserver)
|
|
{
|
|
// We need source and result documents but no stylesheet.
|
|
NS_ENSURE_ARG(aSourceDOM);
|
|
NS_ENSURE_ARG(aOutputDoc);
|
|
|
|
// Create wrapper for the source document.
|
|
nsCOMPtr<nsIDOMDocument> sourceDOMDocument;
|
|
aSourceDOM->GetOwnerDocument(getter_AddRefs(sourceDOMDocument));
|
|
if (!sourceDOMDocument)
|
|
sourceDOMDocument = do_QueryInterface(aSourceDOM);
|
|
NS_ENSURE_TRUE(sourceDOMDocument, NS_ERROR_FAILURE);
|
|
Document sourceDocument(sourceDOMDocument);
|
|
Node* sourceNode = sourceDocument.createWrapper(aSourceDOM);
|
|
NS_ENSURE_TRUE(sourceNode, NS_ERROR_FAILURE);
|
|
|
|
// Create wrapper for the style document.
|
|
nsCOMPtr<nsIDOMDocument> styleDOMDocument;
|
|
aStyleDOM->GetOwnerDocument(getter_AddRefs(styleDOMDocument));
|
|
if (!styleDOMDocument)
|
|
styleDOMDocument = do_QueryInterface(aStyleDOM);
|
|
Document xslDocument(styleDOMDocument);
|
|
|
|
// Create wrapper for the output document.
|
|
mDocument = do_QueryInterface(aOutputDoc);
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_FAILURE);
|
|
Document resultDocument(aOutputDoc);
|
|
|
|
// Reset the output document.
|
|
nsCOMPtr<nsILoadGroup> loadGroup;
|
|
nsCOMPtr<nsIChannel> channel;
|
|
nsCOMPtr<nsIDocument> inputDocument = do_QueryInterface(sourceDOMDocument);
|
|
if (inputDocument) {
|
|
inputDocument->GetDocumentLoadGroup(getter_AddRefs(loadGroup));
|
|
nsCOMPtr<nsIIOService> serv(do_GetService(NS_IOSERVICE_CONTRACTID));
|
|
if (serv) {
|
|
// Create a temporary channel to get nsIDocument->Reset to
|
|
// do the right thing. We want the output document to get
|
|
// much of the input document's characteristics.
|
|
nsCOMPtr<nsIURI> docURL;
|
|
inputDocument->GetDocumentURL(getter_AddRefs(docURL));
|
|
serv->NewChannelFromURI(docURL, getter_AddRefs(channel));
|
|
}
|
|
}
|
|
mDocument->Reset(channel, loadGroup);
|
|
|
|
// Start of block to ensure the destruction of the ProcessorState
|
|
// before the destruction of the documents.
|
|
{
|
|
// Create a new ProcessorState
|
|
ProcessorState ps(&sourceDocument, &xslDocument, &resultDocument);
|
|
|
|
// XXX Need to add error observers
|
|
|
|
// Set current node and nodeset.
|
|
NodeSet nodeSet(&sourceDocument);
|
|
ps.pushCurrentNode(&sourceDocument);
|
|
ps.getNodeSetStack()->push(&nodeSet);
|
|
|
|
// Index templates and process top level xsl elements
|
|
ListIterator importFrame(ps.getImportFrames());
|
|
importFrame.addAfter(new ProcessorState::ImportFrame(0));
|
|
if (!importFrame.next())
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
nsCOMPtr<nsIDOMDocument> styleDoc = do_QueryInterface(aStyleDOM);
|
|
if (styleDoc) {
|
|
processStylesheet(&sourceDocument, &xslDocument, &importFrame,
|
|
&ps);
|
|
}
|
|
else {
|
|
nsCOMPtr<nsIDOMElement> styleElem = do_QueryInterface(aStyleDOM);
|
|
NS_ENSURE_TRUE(styleElem, NS_ERROR_FAILURE);
|
|
Element* element = xslDocument.createElement(styleElem);
|
|
NS_ENSURE_TRUE(element, NS_ERROR_OUT_OF_MEMORY);
|
|
processTopLevel(&sourceDocument, element, &importFrame, &ps);
|
|
}
|
|
|
|
initializeHandlers(&ps);
|
|
|
|
if (mOutputHandler) {
|
|
mOutputHandler->setOutputDocument(aOutputDoc);
|
|
if (!aObserver)
|
|
// Don't load stylesheets, we can't notify the caller when
|
|
// they're loaded.
|
|
mOutputHandler->disableStylesheetLoad();
|
|
}
|
|
|
|
// Get the script loader of the result document.
|
|
nsCOMPtr<nsIScriptLoader> loader;
|
|
mDocument->GetScriptLoader(getter_AddRefs(loader));
|
|
if (loader) {
|
|
if (aObserver)
|
|
loader->AddObserver(this);
|
|
else
|
|
// Don't load scripts, we can't notify the caller when they're loaded.
|
|
loader->Suspend();
|
|
}
|
|
|
|
// Process root of XML source document
|
|
startTransform(sourceNode, &ps);
|
|
}
|
|
// End of block to ensure the destruction of the ProcessorState
|
|
// before the destruction of the documents.
|
|
|
|
mObserver = aObserver;
|
|
SignalTransformEnd();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
XSLTProcessor::ScriptAvailable(nsresult aResult,
|
|
nsIDOMHTMLScriptElement *aElement,
|
|
PRBool aIsInline,
|
|
PRBool aWasPending,
|
|
nsIURI *aURI,
|
|
PRInt32 aLineNo,
|
|
const nsAString& aScript)
|
|
{
|
|
if (NS_FAILED(aResult) && mOutputHandler) {
|
|
mOutputHandler->removeScriptElement(aElement);
|
|
SignalTransformEnd();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
XSLTProcessor::ScriptEvaluated(nsresult aResult,
|
|
nsIDOMHTMLScriptElement *aElement,
|
|
PRBool aIsInline,
|
|
PRBool aWasPending)
|
|
{
|
|
if (mOutputHandler) {
|
|
mOutputHandler->removeScriptElement(aElement);
|
|
SignalTransformEnd();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
XSLTProcessor::SignalTransformEnd()
|
|
{
|
|
if (!mObserver)
|
|
return;
|
|
|
|
if (!mOutputHandler || !mOutputHandler->isDone())
|
|
return;
|
|
|
|
nsCOMPtr<nsIScriptLoader> loader;
|
|
mDocument->GetScriptLoader(getter_AddRefs(loader));
|
|
if (loader)
|
|
loader->RemoveObserver(this);
|
|
mDocument = nsnull;
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsIObserverService> anObserverService = do_GetService("@mozilla.org/observer-service;1", &rv);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsIContent> rootContent;
|
|
mOutputHandler->getRootContent(getter_AddRefs(rootContent));
|
|
anObserverService->AddObserver(mObserver, "xslt-done", PR_TRUE);
|
|
anObserverService->NotifyObservers(rootContent, "xslt-done", nsnull);
|
|
}
|
|
mObserver = nsnull;
|
|
}
|
|
|
|
// XXX
|
|
// XXX Mozilla module only code. This should move to txMozillaXSLTProcessor
|
|
// XXX END
|
|
|
|
#endif
|
|
|
|
XSLType::XSLType() {
|
|
this->type = LITERAL;
|
|
} //-- XSLType
|
|
|
|
XSLType::XSLType(const XSLType& xslType) {
|
|
this->type = xslType.type;
|
|
} //-- XSLType
|
|
|
|
XSLType::XSLType(short type) {
|
|
this->type = type;
|
|
} //-- XSLType
|