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kipp@netscape.com
376
parser/htmlparser/src/nsParserModule.cpp
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376
parser/htmlparser/src/nsParserModule.cpp
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#include "nsCOMPtr.h"
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#include "nsIGenericFactory.h"
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#include "nsIModule.h"
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#include "nsParserCIID.h"
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#include "nsParser.h"
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#include "nsILoggingSink.h"
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#include "nsWellFormedDTD.h"
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#include "CNavDTD.h"
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#include "nsXIFDTD.h"
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static NS_DEFINE_IID(kParserCID, NS_PARSER_IID);
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static NS_DEFINE_IID(kParserNodeCID, NS_PARSER_NODE_IID);
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static NS_DEFINE_IID(kLoggingSinkCID, NS_LOGGING_SINK_IID);
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static NS_DEFINE_CID(kWellFormedDTDCID, NS_WELLFORMEDDTD_CID);
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static NS_DEFINE_CID(kNavDTDCID, NS_CNAVDTD_CID);
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static NS_DEFINE_CID(kXIFDTDCID, NS_XIF_DTD_CID);
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struct Components {
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const char* mDescription;
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const nsID* mCID;
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};
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static Components gComponents[] = {
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{ "Parser", &kParserCID },
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{ "ParserNode", &kParserNodeCID },
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{ "Logging sink", &kLoggingSinkCID },
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{ "Well formed DTD", &kWellFormedDTDCID },
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{ "Navigator HTML DTD", &kNavDTDCID },
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{ "XIF DTD", &kXIFDTDCID },
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};
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#define NUM_COMPONENTS (sizeof(gComponents) / sizeof(gComponents[0]));
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// Factory method to create new instances of nsParser
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static nsresult
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CreateNewParser(nsISupports* aOuter, REFNSIID aIID, void **aResult)
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{
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if (!aResult) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (aOuter) {
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*aResult = nsnull;
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return NS_NOINTERFACE;
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}
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nsParser* inst = new nsParser();
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if (!inst) {
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*aResult = nsnull;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsresult rv = inst->QueryInterface(aIID, aResult);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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delete inst;
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}
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return rv;
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}
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// Factory method to create new instances of nsParserNode
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static nsresult
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CreateNewParserNode(nsISupports* aOuter, REFNSIID aIID, void **aResult)
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{
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if (!aResult) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (aOuter) {
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*aResult = nsnull;
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return NS_NOINTERFACE;
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}
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nsCParserNode* inst = new nsCParserNode();
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if (!inst) {
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*aResult = nsnull;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsresult rv = inst->QueryInterface(aIID, aResult);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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delete inst;
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}
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return rv;
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}
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// Factory method to create new instances of nsILoggingSink
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static nsresult
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CreateNewLoggingSink(nsISupports* aOuter, REFNSIID aIID, void **aResult)
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{
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if (!aResult) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (aOuter) {
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*aResult = nsnull;
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return NS_NOINTERFACE;
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}
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nsIContentSink* inst;
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nsresult rv = NS_NewHTMLLoggingSink(&inst);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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rv = inst->QueryInterface(aIID, aResult);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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}
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NS_RELEASE(inst); // get rid of extra refcnt
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return rv;
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}
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// Factory method to create new instances of nsWellFormedDTD
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static nsresult
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CreateNewWellFormedDTD(nsISupports* aOuter, REFNSIID aIID, void **aResult)
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{
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if (!aResult) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (aOuter) {
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*aResult = nsnull;
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return NS_NOINTERFACE;
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}
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nsIDTD* inst;
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nsresult rv = NS_NewWellFormed_DTD(&inst);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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rv = inst->QueryInterface(aIID, aResult);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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}
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NS_RELEASE(inst); // get rid of extra refcnt
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return rv;
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}
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// Factory method to create new instances of nsNavHTMLDTD
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static nsresult
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CreateNewNavHTMLDTD(nsISupports* aOuter, REFNSIID aIID, void **aResult)
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{
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if (!aResult) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (aOuter) {
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*aResult = nsnull;
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return NS_NOINTERFACE;
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}
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nsIDTD* inst;
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nsresult rv = NS_NewNavHTMLDTD(&inst);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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rv = inst->QueryInterface(aIID, aResult);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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}
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NS_RELEASE(inst); // get rid of extra refcnt
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return rv;
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}
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// Factory method to create new instances of nsXIFDTD
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static nsresult
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CreateNewXIFDTD(nsISupports* aOuter, REFNSIID aIID, void **aResult)
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{
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if (!aResult) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (aOuter) {
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*aResult = nsnull;
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return NS_NOINTERFACE;
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}
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nsIDTD* inst;
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nsresult rv = NS_NewXIFDTD(&inst);
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if (!inst) {
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*aResult = nsnull;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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rv = inst->QueryInterface(aIID, aResult);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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}
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NS_RELEASE(inst); // get rid of extra refcnt
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return rv;
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}
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//----------------------------------------------------------------------
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class nsParserModule : public nsIModule {
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public:
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nsParserModule();
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virtual ~nsParserModule();
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NS_DECL_ISUPPORTS
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NS_DECL_NSIMODULE
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nsresult Initialize();
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protected:
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void Shutdown();
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PRBool mInitialized;
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};
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static NS_DEFINE_IID(kIModuleIID, NS_IMODULE_IID);
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nsParserModule::nsParserModule()
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: mInitialized(PR_FALSE)
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{
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NS_INIT_ISUPPORTS();
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}
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nsParserModule::~nsParserModule()
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{
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Shutdown();
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}
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NS_IMPL_ISUPPORTS(nsParserModule, kIModuleIID)
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nsresult
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nsParserModule::Initialize()
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{
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return NS_OK;
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}
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void
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nsParserModule::Shutdown()
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{
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}
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NS_IMETHODIMP
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nsParserModule::GetClassObject(nsIComponentManager *aCompMgr,
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const nsCID& aClass,
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const nsIID& aIID,
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void** r_classObj)
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{
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nsresult rv;
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if (!mInitialized) {
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rv = Initialize();
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if (NS_FAILED(rv)) {
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return rv;
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}
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mInitialized = PR_TRUE;
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}
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nsCOMPtr<nsIGenericFactory> fact;
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if (aClass.Equals(kParserCID)) {
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rv = NS_NewGenericFactory(getter_AddRefs(fact), CreateNewParser);
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}
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else if (aClass.Equals(kParserNodeCID)) {
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rv = NS_NewGenericFactory(getter_AddRefs(fact), CreateNewParserNode);
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}
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else if (aClass.Equals(kLoggingSinkCID)) {
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rv = NS_NewGenericFactory(getter_AddRefs(fact), CreateNewLoggingSink);
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}
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else if (aClass.Equals(kWellFormedDTDCID)) {
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rv = NS_NewGenericFactory(getter_AddRefs(fact), CreateNewWellFormedDTD);
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}
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else if (aClass.Equals(kNavDTDCID)) {
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rv = NS_NewGenericFactory(getter_AddRefs(fact), CreateNewNavHTMLDTD);
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}
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else if (aClass.Equals(kXIFDTDCID)) {
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rv = NS_NewGenericFactory(getter_AddRefs(fact), CreateNewXIFDTD);
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}
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else {
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rv = NS_ERROR_FACTORY_NOT_REGISTERED;
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}
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if (fact) {
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rv = fact->QueryInterface(aIID, r_classObj);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsParserModule::RegisterSelf(nsIComponentManager *aCompMgr,
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nsIFileSpec* aPath,
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const char* registryLocation,
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const char* componentType)
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{
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nsresult rv = NS_OK;
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Components* cp = gComponents;
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Components* end = cp + NUM_COMPONENTS;
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while (cp < end) {
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rv = aCompMgr->RegisterComponentSpec(*cp->mCID, cp->mDescription,
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nsnull, aPath, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) {
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#ifdef DEBUG
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printf("nsParserModule: unable to register %s component => %x\n",
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cp->mDescription, rv);
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#endif
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break;
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}
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cp++;
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}
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return rv;
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}
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NS_IMETHODIMP
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nsParserModule::UnregisterSelf(nsIComponentManager *aCompMgr,
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nsIFileSpec* aPath,
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const char* registryLocation)
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{
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Components* cp = gComponents;
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Components* end = cp + NUM_COMPONENTS;
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while (cp < end) {
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nsresult rv = aCompMgr->UnregisterComponentSpec(*cp->mCID, aPath);
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if (NS_FAILED(rv)) {
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#ifdef DEBUG
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printf("nsParserModule: unable to unregister %s component => %x\n",
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cp->mDescription, rv);
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#endif
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}
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cp++;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsParserModule::CanUnload(nsIComponentManager *aCompMgr, PRBool *okToUnload)
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{
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if (!okToUnload) {
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return NS_ERROR_INVALID_POINTER;
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}
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*okToUnload = PR_FALSE;
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return NS_ERROR_FAILURE;
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}
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//----------------------------------------------------------------------
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#if 0
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static nsParserModule *gModule = NULL;
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extern "C" NS_EXPORT nsresult NSGetModule(nsIComponentManager *servMgr,
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nsIFileSpec* location,
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nsIModule** return_cobj)
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{
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nsresult rv = NS_OK;
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NS_ASSERTION(return_cobj, "Null argument");
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NS_ASSERTION(gModule == NULL, "nsParserModule: Module already created.");
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// Create an initialize the layout module instance
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nsParserModule *m = new nsParserModule();
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if (!m) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// Increase refcnt and store away nsIModule interface to m in return_cobj
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rv = m->QueryInterface(nsIModule::GetIID(), (void**)return_cobj);
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if (NS_FAILED(rv)) {
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delete m;
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m = nsnull;
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}
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gModule = m; // WARNING: Weak Reference
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return rv;
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}
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#endif
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