Fixing bug 265334. Adding API for embedders etc to listen to data fed to the parser from the network. r=darin@meer.net, sr=brendan@mozilla.org

content/base/src/mozSanitizingSerializer.h

@@ -107,7 +107,7 @@ public:
   NS_IMETHOD AddDocTypeDecl(const nsIParserNode& aNode);
   virtual void FlushContent(PRBool aNotify) { }
   NS_IMETHOD SetDocumentCharset(nsACString& aCharset);
-  NS_IMETHOD NotifyTagObservers(nsIParserNode* aNode) { return NS_OK; }
+  virtual nsISupports *GetTarget() { return nsnull; }
 
   // nsIHTMLContentSink
   NS_IMETHOD OpenHTML(const nsIParserNode& aNode);
@@ -124,6 +124,7 @@ public:
   NS_IMETHOD OpenFrameset(const nsIParserNode& aNode);
   NS_IMETHOD CloseFrameset();
   NS_IMETHOD IsEnabled(PRInt32 aTag, PRBool* aReturn);
+  NS_IMETHOD NotifyTagObservers(nsIParserNode* aNode) { return NS_OK; }
   NS_IMETHOD_(PRBool) IsFormOnStack() { return PR_FALSE; }
   NS_IMETHOD BeginContext(PRInt32 aPosition) { return NS_OK; }
   NS_IMETHOD EndContext(PRInt32 aPosition) { return NS_OK; }

content/base/src/nsPlainTextSerializer.h

@@ -103,7 +103,7 @@ public:
   NS_IMETHOD AddDocTypeDecl(const nsIParserNode& aNode) { return NS_OK; }
   virtual void FlushContent(PRBool aNotify) { }
   NS_IMETHOD SetDocumentCharset(nsACString& aCharset) { return NS_OK; }
-  NS_IMETHOD NotifyTagObservers(nsIParserNode* aNode) { return NS_OK; }
+  virtual nsISupports *GetTarget() { return nsnull; }
 
   // nsIHTMLContentSink
   NS_IMETHOD SetTitle(const nsString& aValue) { return NS_OK; }
@@ -120,6 +120,7 @@ public:
   NS_IMETHOD OpenFrameset(const nsIParserNode& aNode);
   NS_IMETHOD CloseFrameset();
   NS_IMETHOD IsEnabled(PRInt32 aTag, PRBool* aReturn);
+  NS_IMETHOD NotifyTagObservers(nsIParserNode* aNode) { return NS_OK; }
   NS_IMETHOD_(PRBool) IsFormOnStack() { return PR_FALSE; }
 
   NS_IMETHOD BeginContext(PRInt32 aPosition) { return NS_OK; }

content/html/document/src/nsHTMLContentSink.cpp

@@ -231,6 +231,7 @@ public:
   NS_IMETHOD SetParser(nsIParser* aParser);
   virtual void FlushContent(PRBool aNotify);
   NS_IMETHOD SetDocumentCharset(nsACString& aCharset);
+  virtual nsISupports *GetTarget();
 
   // nsIHTMLContentSink
   NS_IMETHOD OpenContainer(const nsIParserNode& aNode);
@@ -4409,6 +4410,12 @@ HTMLContentSink::SetDocumentCharset(nsACString& aCharset)
   return NS_OK;
 }
 
+nsISupports *
+HTMLContentSink::GetTarget()
+{
+  return mDocument;
+}
+
 #ifdef DEBUG
 /**
  *  This will dump content model into the output file.

content/html/document/src/nsHTMLFragmentContentSink.cpp

@@ -86,6 +86,7 @@ public:
   NS_IMETHOD SetParser(nsIParser* aParser);
   virtual void FlushContent(PRBool aNotify) { }
   NS_IMETHOD SetDocumentCharset(nsACString& aCharset) { return NS_OK; }
+  virtual nsISupports *GetTarget() { return mTargetDocument; }
 
   // nsIHTMLContentSink
   NS_IMETHOD BeginContext(PRInt32 aID);

content/xml/document/public/nsIXMLContentSink.h

@@ -46,8 +46,8 @@ class nsIURI;
 class nsIChannel;
 
 #define NS_IXMLCONTENT_SINK_IID \
- { 0xa6cf90c9, 0x15b3, 0x11d2, \
+ { 0x63fedea0, 0x9b0f, 0x4d64, \
- { 0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32 } }
+ { 0x9b, 0xa5, 0x37, 0xc6, 0x99, 0x73, 0x29, 0x35 } }
 
 /**
  * This interface represents a content sink for generic XML files.

content/xml/document/src/nsXMLContentSink.cpp

@@ -753,6 +753,12 @@ nsXMLContentSink::SetDocumentCharset(nsACString& aCharset)
   return NS_OK;
 }
 
+nsISupports *
+nsXMLContentSink::GetTarget()
+{
+  return mDocument;
+}
+
 nsresult
 nsXMLContentSink::FlushText(PRBool aCreateTextNode, PRBool* aDidFlush)
 {

content/xml/document/src/nsXMLContentSink.h

@@ -87,6 +87,7 @@ public:
   NS_IMETHOD SetParser(nsIParser* aParser);  
   virtual void FlushContent(PRBool aNotify) { }
   NS_IMETHOD SetDocumentCharset(nsACString& aCharset);
+  virtual nsISupports *GetTarget();
 
   // nsITransformObserver
   NS_IMETHOD OnDocumentCreated(nsIDOMDocument *aResultDocument);

content/xml/document/src/nsXMLFragmentContentSink.cpp

@@ -77,6 +77,7 @@ public:
   NS_IMETHOD WillBuildModel(void);
   NS_IMETHOD DidBuildModel();
   NS_IMETHOD SetDocumentCharset(nsACString& aCharset);
+  virtual nsISupports *GetTarget();
 
   // nsIXMLContentSink
 
@@ -207,6 +208,12 @@ nsXMLFragmentContentSink::SetDocumentCharset(nsACString& aCharset)
   return NS_OK;
 }
 
+nsISupports *
+nsXMLFragmentContentSink::GetTarget()
+{
+  return mTargetDocument;
+}
+
 ////////////////////////////////////////////////////////////////////////
 
 PRBool

content/xul/document/public/nsIXULContentSink.h

@@ -44,10 +44,10 @@
 class nsIDocument;
 class nsIXULPrototypeDocument;
 
-// {E49AA620-C16C-11d2-A6AA-00104BDE6048}
+// {f9da9ee5-d353-4994-9560-6a4e06310e2d}
 #define NS_IXULCONTENTSINK_IID \
-{ 0xe49aa620, 0xc16c, 0x11d2, { 0xa6, 0xaa, 0x0, 0x10, 0x4b, 0xde, 0x60, 0x48 } }
+{ 0xf9da9ee5, 0xd353, 0x4994, \
-
+{ 0x95, 0x60, 0x6a, 0x4e, 0x06, 0x31, 0x0e, 0x2d } }
 
 class nsIXULContentSink : public nsIXMLContentSink
 {

content/xul/document/src/nsXULContentSink.cpp

@@ -137,6 +137,7 @@ public:
     NS_IMETHOD SetParser(nsIParser* aParser);  
     virtual void FlushContent(PRBool aNotify) { }
     NS_IMETHOD SetDocumentCharset(nsACString& aCharset);
+    virtual nsISupports *GetTarget();
 
     // nsIXULContentSink
     NS_IMETHOD Init(nsIDocument* aDocument, nsIXULPrototypeDocument* aPrototype);
@@ -567,6 +568,13 @@ XULContentSinkImpl::SetDocumentCharset(nsACString& aCharset)
     return NS_OK;
 }
 
+nsISupports *
+XULContentSinkImpl::GetTarget()
+{
+    nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocument);
+    return doc;    
+}
+
 //----------------------------------------------------------------------
 //
 // nsIXULContentSink interface

extensions/transformiix/source/xslt/txMozillaStylesheetCompiler.cpp

@@ -114,6 +114,7 @@ public:
     NS_IMETHOD SetParser(nsIParser* aParser) { return NS_OK; }
     virtual void FlushContent(PRBool aNotify) { }
     NS_IMETHOD SetDocumentCharset(nsACString& aCharset) { return NS_OK; }
+    virtual nsISupports *GetTarget() { return nsnull; }
 
 private:
     nsRefPtr<txStylesheetCompiler> mCompiler;

netwerk/base/public/Makefile.in

@@ -57,6 +57,7 @@ SDK_XPIDLSRCS   = \
 		nsIURL.idl \
 		nsIFileURL.idl \
 		nsIUploadChannel.idl \
+		nsIUnicharStreamListener.idl \
 		$(NULL)
 
 XPIDLSRCS	= \

netwerk/base/public/nsIUnicharStreamListener.idl

@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is mozilla.org.
+ * Portions created by the Initial Developer are Copyright (C) 2004
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Johnny Stenback <jst@mozilla.org>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "nsIRequestObserver.idl"
+
+/**
+ * nsIUnicharStreamListener is very similar to nsIStreamListener with
+ * the difference being that this interface gives notifications about
+ * data being available after the raw data has been converted to
+ * UTF-16.
+ *
+ * nsIUnicharStreamListener
+ *
+ * @status FROZEN
+ */
+[scriptable, uuid(4a7e9b62-fef8-400d-9865-d6820f630b4c)]
+interface nsIUnicharStreamListener : nsIRequestObserver
+{
+    /**
+     * Called when the next chunk of data (corresponding to the
+     * request) is available.
+     *
+     * @param aRequest request corresponding to the source of the data
+     * @param aContext user defined context
+     * @param aData the data chunk
+     *
+     * An exception thrown from onUnicharDataAvailable has the
+     * side-effect of causing the request to be canceled.
+     */
+    void onUnicharDataAvailable(in nsIRequest aRequest,
+                                in nsISupports aContext, in AString aData);
+};

parser/htmlparser/public/Makefile.in

@@ -68,6 +68,10 @@ EXPORTS = \
 		nsToken.h                   \
 		$(NULL)
 
+SDK_HEADERS = \
+		nsParserDataListener.h      \
+		$(NULL)
+
 ifdef MOZ_DEBUG
 EXPORTS += \
 		nsILoggingSink.h \

parser/htmlparser/public/nsIContentSink.h

@@ -54,8 +54,7 @@
 class nsIParser;
 
 #define NS_ICONTENT_SINK_IID \
-{ 0xa6cf9052, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
+{0x7f459e15, 0xd559, 0x4c50, {0x91, 0x30, 0x3a, 0xe7, 0x31, 0x46, 0x67, 0xa9}}
-
 // The base value for the content ID counter.
 // Values greater than or equal to this base value are used
 // by each of the content sinks to assign unique values
@@ -122,6 +121,13 @@ public:
    * document itself.
    */
   NS_IMETHOD SetDocumentCharset(nsACString& aCharset)=0;
+
+  /**
+   * Returns the target object (often a document object) into which
+   * the content built by this content sink is being added, if any
+   * (IOW, may return null).
+   */
+  virtual nsISupports *GetTarget()=0;
 };
 
 #endif /* nsIContentSink_h___ */

parser/htmlparser/public/nsIHTMLContentSink.h

@@ -86,8 +86,7 @@
 #include "nsHTMLTags.h"
 
 #define NS_IHTML_CONTENT_SINK_IID \
- { 0xa6cf9051, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
+ { 0x59929de5, 0xe60b, 0x48b1,{0x81, 0x69, 0x48, 0x47, 0xb5, 0xc9, 0x44, 0x29}}
-
 
 #ifdef XP_MAC
 #define MAX_REFLOW_DEPTH  75    //setting to 75 to prevent layout from crashing on mac. Bug 55095.

parser/htmlparser/public/nsParserDataListener.h

@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is mozilla.org.
+ * Portions created by the Initial Developer are Copyright (C) 2004
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Johnny Stenback <jst@mozilla.org>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef __nsParserDataListener_h__
+#define __nsParserDataListener_h__
+
+/*
+ * Include this header if you're implementing a parser data
+ * listener. To make a component a parser data listener you'll need to
+ * make your component implement the interface
+ * nsIUnicharStreamListener. That interface has three methods (one +
+ * two inherited ones, not counting what's defined in
+ * nsISupports). The methods are:
+ *
+ *  void onStartRequest(in nsIRequest aRequest,
+ *                      in nsISupports aContext);
+ *  void onUnicharDataAvailable(in nsIRequest aRequest,
+ *                              in nsISupports aContext, in AString aData);
+ *  void onStopRequest(in nsIRequest aRequest,
+ *                     in nsISupports aContext,
+ *                     in nsresult aStatusCode);
+ *
+ * All those methods are called for every network request that ends up
+ * feeding data to the parser. The method are called in the order
+ * shown above, first one call to onStartRequest(), then one call to
+ * onUnicharDataAvailable() per chunk of data received and converted
+ * to UTF-16, and finally one call to onStopRequest().
+ *
+ * The nsIRequest passed into these methods will be the same object
+ * for all these calls for a given network request. If the request
+ * pointer is used to uniquely identify an ongoing request, the
+ * pointer should be QueryInterface()'d to nsISupports to ensure that
+ * the pointer used is the identity pointer to the object.
+ *
+ * The context argument passed to these methods will be the document
+ * (nsIDOMDocument) parsed from the stream, or null when not
+ * available.
+ *
+ * Any errors returned from any of these calls will end up canceling
+ * the stream, and the data that is passed to the call in question
+ * will *not* be seen by the parser. So unless you intend to interrupt
+ * a request, *make sure* that you return NS_OK from these methods!
+ */
+
+#include "nsIUnicharStreamListener.h"
+
+/*
+ * To register a component to be a parser data listener the
+ * component's contract id should be registered with the category
+ * manager (nsICategoryManager), with the category
+ * PARSER_DATA_LISTENER_CATEGORY, defined here.
+ */
+#define PARSER_DATA_LISTENER_CATEGORY "Parser data listener"
+
+#endif // __nsParserDataListener_h__

parser/htmlparser/robot/nsRobotSink.cpp

@@ -106,6 +106,7 @@ public:
   NS_IMETHOD SetParser(nsIParser* aParser) { return NS_OK; }
   virtual void FlushContent(PRBool aNotify) { }
   NS_IMETHOD SetDocumentCharset(nsACString& aCharset) { return NS_OK; }
+  virtual nsISupports *GetTarget() { return nsnull; }
   NS_IMETHOD WillProcessTokens(void) { return NS_OK; }
   NS_IMETHOD DidProcessTokens(void) { return NS_OK; }
   NS_IMETHOD WillProcessAToken(void) { return NS_OK; }

parser/htmlparser/src/nsLoggingSink.h

@@ -74,7 +74,7 @@ public:
   NS_IMETHOD AddDocTypeDecl(const nsIParserNode& aNode);
   virtual void FlushContent(PRBool aNotify) { }
   NS_IMETHOD SetDocumentCharset(nsACString& aCharset) { return NS_OK; }
-  NS_IMETHOD NotifyTagObservers(nsIParserNode* aNode) { return NS_OK; }
+  virtual nsISupports *GetTarget() { return nsnull; }
 
   // nsIHTMLContentSink
   NS_IMETHOD SetTitle(const nsString& aValue);
@@ -91,6 +91,7 @@ public:
   NS_IMETHOD OpenFrameset(const nsIParserNode& aNode);
   NS_IMETHOD CloseFrameset();
   NS_IMETHOD IsEnabled(PRInt32 aTag, PRBool* aReturn) { return NS_OK; }
+  NS_IMETHOD NotifyTagObservers(nsIParserNode* aNode) { return NS_OK; }
   NS_IMETHOD_(PRBool) IsFormOnStack() { return PR_FALSE; }
 
   NS_IMETHOD BeginContext(PRInt32 aPosition);

parser/htmlparser/src/nsParser.cpp

@@ -63,7 +63,8 @@
 #include "nsIEventQueueService.h"
 #include "nsExpatDriver.h"
 #include "nsIServiceManager.h"
-//#define rickgdebug 
+#include "nsICategoryManager.h"
+#include "nsISupportsPrimitives.h"
 
 #ifdef MOZ_VIEW_SOURCE
 #include "nsViewSourceHTML.h" 
@@ -85,6 +86,8 @@ static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
 
 //-------------------------------------------------------------------
 
+nsCOMArray<nsIUnicharStreamListener> *nsParser::sParserDataListeners;
+ 
 
 class CDTDDeallocator: public nsDequeFunctor{
 public:
@@ -251,7 +254,7 @@ static CSharedParserObjects* gSharedParserObjects=0;
 
 //-------------------------------------------------------------------------
 
-nsresult
+static nsresult
 GetSharedObjects(CSharedParserObjects** aSharedParserObjects) {
   if (!gSharedParserObjects) {
     gSharedParserObjects = new CSharedParserObjects();
@@ -263,16 +266,81 @@ GetSharedObjects(CSharedParserObjects** aSharedParserObjects) {
   return NS_OK;
 }
 
+static void
+FreeSharedObjects(void) {
+  if (gSharedParserObjects) {
+    delete gSharedParserObjects;
+    gSharedParserObjects=0;
+  }
+}
+
+
+/** 
+ *  This gets called when the htmlparser module is initialized.
+ */
+// static
+nsresult nsParser::Init()
+{
+  nsresult rv;
+  nsCOMPtr<nsICategoryManager> cm =
+    do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISimpleEnumerator> e;
+  rv = cm->EnumerateCategory("Parser data listener", getter_AddRefs(e));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCAutoString categoryEntry;
+  nsXPIDLCString contractId;
+  nsCOMPtr<nsISupports> entry;
+
+  while (NS_SUCCEEDED(e->GetNext(getter_AddRefs(entry)))) {
+    nsCOMPtr<nsISupportsCString> category(do_QueryInterface(entry));
+
+    if (!category) {
+      NS_WARNING("Category entry not an nsISupportsCString!");
+
+      continue;
+    }
+
+    rv = category->GetData(categoryEntry);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = cm->GetCategoryEntry("Parser data listener", categoryEntry.get(),
+                              getter_Copies(contractId));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIUnicharStreamListener> listener =
+      do_CreateInstance(contractId.get());
+
+    if (listener) {
+      if (!sParserDataListeners) {
+        sParserDataListeners = new nsCOMArray<nsIUnicharStreamListener>();
+
+        if (!sParserDataListeners)
+          return NS_ERROR_OUT_OF_MEMORY;
+      }
+
+      sParserDataListeners->AppendObject(listener);
+    }
+  }
+
+  return NS_OK;
+}
+
+
 /** 
  *  This gets called when the htmlparser module is shutdown.
  *   
  *  @update  gess 01/04/99
  */
-void nsParser::FreeSharedObjects(void) {
+// static
-  if (gSharedParserObjects) {
+void nsParser::Shutdown()
-    delete gSharedParserObjects;
+{
-    gSharedParserObjects=0;
+  FreeSharedObjects();
-  }
+
+  delete sParserDataListeners;
+  sParserDataListeners = nsnull;
 }
 
 
@@ -1425,6 +1493,34 @@ void nsParser::HandleParserContinueEvent() {
   ContinueParsing();
 }
 
+nsresult nsParser::DataAdded(const nsSubstring& aData)
+{
+  NS_ASSERTION(sParserDataListeners,
+               "Don't call this with no parser data listeners!");
+
+  if (!mSink || !mParserContext || !mParserContext->mRequest) {
+    return NS_OK;
+  }
+
+  nsISupports *ctx = mSink->GetTarget();
+  PRInt32 count = sParserDataListeners->Count();
+  nsresult rv = NS_OK;
+  PRBool canceled = PR_FALSE;
+
+  while (count--) {
+    rv |= sParserDataListeners->ObjectAt(count)->
+      OnUnicharDataAvailable(mParserContext->mRequest, ctx, aData);
+
+    if (NS_FAILED(rv) && !canceled) {
+      mParserContext->mRequest->Cancel(rv);
+
+      canceled = PR_TRUE;
+    }
+  }
+
+  return rv;
+}
+
 PRBool nsParser::CanInterrupt(void) {
   return mFlags & NS_PARSER_FLAG_CAN_INTERRUPT;
 }
@@ -1484,6 +1580,13 @@ nsParser::Parse(nsIURI* aURL,
       pc->mContextType=CParserContext::eCTURL;
       pc->mDTDMode=aMode;
       PushContext(*pc);
+
+      // Here, and only here, hand this parser off to the scanner. We
+      // only want to do that here since the only reason the scanner
+      // needs the parser is to call DataAdded() on it, and that's
+      // only ever wanted when parsing from an URI.
+      theScanner->SetParser(this);
+
       result=NS_OK;
     }
     else{
@@ -1994,7 +2097,19 @@ nsresult nsParser::OnStartRequest(nsIRequest *request, nsISupports* aContext) {
   gOutFile= new fstream("c:/temp/out.file",ios::trunc);
 #endif
 
-  return NS_OK;
+  rv = NS_OK;
+
+  if (sParserDataListeners && mSink) {
+    nsISupports *ctx = mSink->GetTarget();
+    PRInt32 count = sParserDataListeners->Count();
+
+    while (count--) {
+      rv |= sParserDataListeners->ObjectAt(count)->
+        OnStartRequest(request, ctx);
+    }
+  }
+
+  return rv;
 }
 
 
@@ -2475,13 +2590,14 @@ nsresult nsParser::OnStopRequest(nsIRequest *request, nsISupports* aContext,
                                  nsresult status)
 {  
 
-  nsresult result=NS_OK;
+  nsresult rv = NS_OK;
 
   if (eOnStart == mParserContext->mStreamListenerState) {
-    //If you're here, then OnDataAvailable() never got called. 
+    //If you're here, then OnDataAvailable() never got called.  Prior
-    //Prior to necko, we never dealt with this case, but the problem may have existed.
+    //to necko, we never dealt with this case, but the problem may
-    //Everybody can live with an empty input stream, so just resume parsing.
+    //have existed.  Everybody can live with an empty input stream, so
-    result=ResumeParse(PR_TRUE,PR_TRUE);    
+    //just resume parsing.
+    rv = ResumeParse(PR_TRUE, PR_TRUE);    
   }
 
   mParserContext->mStreamListenerState = eOnStop;
@@ -2491,7 +2607,7 @@ nsresult nsParser::OnStopRequest(nsIRequest *request, nsISupports* aContext,
     mParserFilter->Finish();
 
   mParserContext->mScanner->SetIncremental(PR_FALSE);
-  result=ResumeParse(PR_TRUE,PR_TRUE);
+  rv = ResumeParse(PR_TRUE, PR_TRUE);
 
   // If the parser isn't enabled, we don't finish parsing till
   // it is reenabled.
@@ -2511,7 +2627,17 @@ nsresult nsParser::OnStopRequest(nsIRequest *request, nsISupports* aContext,
   }
 #endif
 
-  return result;
+  if (sParserDataListeners && mSink) {
+    nsISupports *ctx = mSink->GetTarget();
+    PRInt32 count = sParserDataListeners->Count();
+
+    while (count--) {
+      rv |= sParserDataListeners->ObjectAt(count)->OnStopRequest(request, ctx,
+                                                                 status);
+    }
+  }
+
+  return rv;
 }
 
 

parser/htmlparser/src/nsParser.h

@@ -87,6 +87,8 @@
 #include "nsIEventQueue.h"
 #include "nsIContentSink.h"
 #include "nsIParserFilter.h"
+#include "nsCOMArray.h"
+#include "nsIUnicharStreamListener.h"
 
 class nsIDTD;
 class nsScanner;
@@ -103,7 +105,15 @@ class nsParser : public nsIParser,
   
   public:
     friend class CTokenHandler;
-    static void FreeSharedObjects(void);
+    /**
+     * Called on module init
+     */
+    static nsresult Init();
+
+    /**
+     * Called on module shutdown
+     */
+    static void Shutdown();
 
     NS_DECL_ISUPPORTS
 
@@ -375,6 +385,14 @@ class nsParser : public nsIParser,
      */
     void HandleParserContinueEvent(void);
 
+    /**
+     * Called by top-level scanners when data from necko is added to
+     * the scanner.
+     */
+    nsresult DataAdded(const nsSubstring& aData);
+
+    static nsCOMArray<nsIUnicharStreamListener> *sParserDataListeners;
+
 protected:
 
     /**

parser/htmlparser/src/nsParserModule.cpp

@@ -116,7 +116,8 @@ Initialize(nsIModule* aSelf)
     CNewlineToken::AllocNewline();
     gInitialized = PR_TRUE;
   }
-  return NS_OK;
+
+  return nsParser::Init();
 }
 
 PR_STATIC_CALLBACK(void)
@@ -126,7 +127,7 @@ Shutdown(nsIModule* aSelf)
     nsHTMLTags::ReleaseTable();
     nsHTMLEntities::ReleaseTable();
     nsDTDContext::ReleaseGlobalObjects();
-    nsParser::FreeSharedObjects();
+    nsParser::Shutdown();
     DeleteElementTable();
     CNewlineToken::FreeNewline();
     gInitialized = PR_FALSE;

parser/htmlparser/src/nsScanner.cpp

@@ -48,6 +48,7 @@
 #include "nsNetUtil.h"
 #include "nsUTF8Utils.h" // for LossyConvertEncoding
 #include "nsCRT.h"
+#include "nsParser.h"
 
 static NS_DEFINE_CID(kCharsetAliasCID, NS_CHARSETALIAS_CID);
 
@@ -92,7 +93,9 @@ MOZ_DECL_CTOR_COUNTER(nsScanner)
  *  @param   aMode represents the parser mode (nav, other)
  *  @return  
  */
-nsScanner::nsScanner(const nsAString& anHTMLString, const nsACString& aCharset, PRInt32 aSource)
+nsScanner::nsScanner(const nsAString& anHTMLString, const nsACString& aCharset,
+                     PRInt32 aSource)
+  : mParser(nsnull)
 {
   MOZ_COUNT_CTOR(nsScanner);
 
@@ -118,8 +121,9 @@ nsScanner::nsScanner(const nsAString& anHTMLString, const nsACString& aCharset,
  *  @param   aFilename --
  *  @return  
  */
-nsScanner::nsScanner(nsString& aFilename,PRBool aCreateStream, const nsACString& aCharset, PRInt32 aSource) : 
+nsScanner::nsScanner(nsString& aFilename,PRBool aCreateStream,
-    mFilename(aFilename)
+                     const nsACString& aCharset, PRInt32 aSource)
+  : mFilename(aFilename), mParser(nsnull)
 {
   MOZ_COUNT_CTOR(nsScanner);
 
@@ -162,8 +166,9 @@ nsScanner::nsScanner(nsString& aFilename,PRBool aCreateStream, const nsACString&
  *  @param   aFilename --
  *  @return  
  */
-nsScanner::nsScanner(const nsAString& aFilename,nsIInputStream* aStream,const nsACString& aCharset, PRInt32 aSource) :
+nsScanner::nsScanner(const nsAString& aFilename, nsIInputStream* aStream,
-    mFilename(aFilename)
+                     const nsACString& aCharset, PRInt32 aSource)
+  : mFilename(aFilename), mParser(nsnull)
 {  
   MOZ_COUNT_CTOR(nsScanner);
 
@@ -1326,6 +1331,14 @@ void nsScanner::ReplaceCharacter(nsScannerIterator& aPosition,
 
 void nsScanner::AppendToBuffer(nsScannerString::Buffer* aBuf)
 {
+  if (nsParser::sParserDataListeners && mParser &&
+      NS_FAILED(mParser->DataAdded(Substring(aBuf->DataStart(),
+                                             aBuf->DataEnd())))) {
+    // Don't actually append on failure.
+
+    return;
+  }
+
   if (!mSlidingBuffer) {
     mSlidingBuffer = new nsScannerString(aBuf);
     mSlidingBuffer->BeginReading(mCurrentPosition);

parser/htmlparser/src/nsScanner.h

@@ -59,6 +59,8 @@
 #include "nsScannerString.h"
 #include "nsIInputStream.h"
 
+class nsParser;
+
 class nsReadEndCondition {
 public:
   const PRUnichar *mChars;
@@ -364,6 +366,11 @@ class nsScanner {
         return mFirstNonWhitespacePosition;
       }
 
+      void SetParser(nsParser *aParser)
+      {
+        mParser = aParser;
+      }
+
   protected:
 
 
@@ -395,6 +402,7 @@ class nsScanner {
       PRInt32         mCharsetSource;
       nsCString       mCharset;
       nsIUnicodeDecoder *mUnicodeDecoder;
+      nsParser        *mParser;
 };
 
 #endif

rdf/base/public/nsIRDFContentSink.h

@@ -50,9 +50,9 @@ class nsIDocument;
 class nsIRDFDataSource;
 class nsIURI;
 
-// {751843E2-8309-11d2-8EAC-00805F29F370}
+// {3a7459d7-d723-483c-aef0-404fc48e09b8}
 #define NS_IRDFCONTENTSINK_IID \
-{ 0x751843e2, 0x8309, 0x11d2, { 0x8e, 0xac, 0x0, 0x80, 0x5f, 0x29, 0xf3, 0x70 } }
+{ 0x3a7459d7, 0xd723, 0x483c, { 0xae, 0xf0, 0x40, 0x4f, 0xc4, 0x8e, 0x09, 0xb8 } }
 
 /**
  * This interface represents a content sink for RDF files.

rdf/base/src/nsRDFContentSink.cpp

@@ -174,6 +174,7 @@ public:
     NS_IMETHOD SetParser(nsIParser* aParser);  
     virtual void FlushContent(PRBool aNotify) { }
     NS_IMETHOD SetDocumentCharset(nsACString& aCharset) { return NS_OK; }
+    virtual nsISupports *GetTarget() { return nsnull; }
 
     // nsIRDFContentSink
     NS_IMETHOD Init(nsIURI* aURL);