mirror of
https://github.com/mozilla/gecko-dev.git
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338 lines
8.2 KiB
C++
338 lines
8.2 KiB
C++
/* -*- 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 "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsIRobotSink.h"
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#include "nsIRobotSinkObserver.h"
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#include "nsIParserNode.h"
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#include "nsIParser.h"
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#include "nsString.h"
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#include "nsIURL.h"
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#include "nsCRT.h"
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#include "nsVoidArray.h"
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class nsIDocument;
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// TODO
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// - add in base tag support
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// - get links from other sources:
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// - LINK tag
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// - STYLE SRC
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// - IMG SRC
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// - LAYER SRC
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kIHTMLContentSinkIID, NS_IHTML_CONTENT_SINK_IID);
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static NS_DEFINE_IID(kIRobotSinkIID, NS_IROBOTSINK_IID);
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class RobotSink : public nsIRobotSink {
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public:
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RobotSink();
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~RobotSink();
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void* operator new(size_t size) {
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void* rv = ::operator new(size);
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nsCRT::zero(rv, size);
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return (void*) rv;
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}
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIHTMLContentSink
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NS_IMETHOD SetTitle(const nsString& aValue);
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NS_IMETHOD OpenHTML(const nsIParserNode& aNode);
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NS_IMETHOD CloseHTML(const nsIParserNode& aNode);
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NS_IMETHOD OpenHead(const nsIParserNode& aNode);
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NS_IMETHOD CloseHead(const nsIParserNode& aNode);
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NS_IMETHOD OpenBody(const nsIParserNode& aNode);
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NS_IMETHOD CloseBody(const nsIParserNode& aNode);
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NS_IMETHOD OpenForm(const nsIParserNode& aNode);
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NS_IMETHOD CloseForm(const nsIParserNode& aNode);
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NS_IMETHOD OpenMap(const nsIParserNode& aNode);
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NS_IMETHOD CloseMap(const nsIParserNode& aNode);
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NS_IMETHOD OpenFrameset(const nsIParserNode& aNode);
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NS_IMETHOD CloseFrameset(const nsIParserNode& aNode);
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NS_IMETHOD OpenContainer(const nsIParserNode& aNode);
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NS_IMETHOD CloseContainer(const nsIParserNode& aNode);
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NS_IMETHOD NotifyError(nsresult aErrorResult);
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NS_IMETHOD CloseTopmostContainer();
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NS_IMETHOD AddLeaf(const nsIParserNode& aNode);
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NS_IMETHOD AddComment(const nsIParserNode& aNode);
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NS_IMETHOD AddProcessingInstruction(const nsIParserNode& aNode);
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NS_IMETHOD WillBuildModel(void) { return NS_OK; }
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NS_IMETHOD DidBuildModel(PRInt32 aQualityLevel) { return NS_OK; }
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NS_IMETHOD WillInterrupt(void) { return NS_OK; }
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NS_IMETHOD WillResume(void) { return NS_OK; }
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NS_IMETHOD SetParser(nsIParser* aParser) { return NS_OK; }
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// nsIRobotSink
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NS_IMETHOD Init(nsIURL* aDocumentURL);
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NS_IMETHOD AddObserver(nsIRobotSinkObserver* aObserver);
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NS_IMETHOD RemoveObserver(nsIRobotSinkObserver* aObserver);
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void ProcessLink(const nsString& aLink);
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protected:
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nsIURL* mDocumentURL;
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nsVoidArray mObservers;
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};
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nsresult NS_NewRobotSink(nsIRobotSink** aInstancePtrResult)
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{
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RobotSink* it = new RobotSink();
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return it->QueryInterface(kIRobotSinkIID, (void**) aInstancePtrResult);
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}
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RobotSink::RobotSink()
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{
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}
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RobotSink::~RobotSink()
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{
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NS_IF_RELEASE(mDocumentURL);
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PRInt32 i, n = mObservers.Count();
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for (i = 0; i < n; i++) {
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nsIRobotSinkObserver* cop = (nsIRobotSinkObserver*)mObservers.ElementAt(i);
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NS_RELEASE(cop);
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}
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}
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NS_IMPL_ADDREF(RobotSink);
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NS_IMPL_RELEASE(RobotSink);
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NS_IMETHODIMP RobotSink::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(kIRobotSinkIID)) {
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*aInstancePtr = (void*) this;
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AddRef();
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return NS_OK;
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}
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if (aIID.Equals(kIHTMLContentSinkIID)) {
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*aInstancePtr = (void*) this;
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AddRef();
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return NS_OK;
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}
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if (aIID.Equals(kISupportsIID)) {
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*aInstancePtr = (void*) ((nsISupports*)this);
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AddRef();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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NS_IMETHODIMP RobotSink::SetTitle(const nsString& aValue)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::OpenHTML(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::CloseHTML(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::OpenHead(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::CloseHead(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::OpenBody(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::CloseBody(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::OpenForm(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::CloseForm(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::OpenMap(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::CloseMap(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::OpenFrameset(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::CloseFrameset(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::OpenContainer(const nsIParserNode& aNode)
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{
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nsAutoString tmp(aNode.GetText());
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tmp.ToLowerCase();
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if (tmp.Equals("a")) {
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nsAutoString k, v;
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PRInt32 ac = aNode.GetAttributeCount();
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for (PRInt32 i = 0; i < ac; i++) {
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// Get upper-cased key
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const nsString& key = aNode.GetKeyAt(i);
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k.Truncate();
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k.Append(key);
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k.ToLowerCase();
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if (k.Equals("href")) {
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// Get value and remove mandatory quotes
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v.Truncate();
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v.Append(aNode.GetValueAt(i));
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PRUnichar first = v.First();
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if ((first == '"') || (first == '\'')) {
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if (v.Last() == first) {
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v.Cut(0, 1);
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PRInt32 pos = v.Length() - 1;
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if (pos >= 0) {
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v.Cut(pos, 1);
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}
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} else {
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// Mismatched quotes - leave them in
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}
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}
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ProcessLink(v);
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}
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::CloseContainer(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::CloseTopmostContainer()
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::AddLeaf(const nsIParserNode& aNode)
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{
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::NotifyError(nsresult aErrorResult)
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{
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return NS_OK;
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}
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/**
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* This gets called by the parsing system when we find a comment
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* @update gess11/9/98
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* @param aNode contains a comment token
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* @return error code
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*/
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NS_IMETHODIMP RobotSink::AddComment(const nsIParserNode& aNode) {
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nsresult result= NS_OK;
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return result;
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}
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/**
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* This gets called by the parsing system when we find a PI
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* @update gess11/9/98
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* @param aNode contains a comment token
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* @return error code
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*/
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NS_IMETHODIMP RobotSink::AddProcessingInstruction(const nsIParserNode& aNode) {
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nsresult result= NS_OK;
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return result;
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}
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NS_IMETHODIMP RobotSink::Init(nsIURL* aDocumentURL)
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{
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NS_IF_RELEASE(mDocumentURL);
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mDocumentURL = aDocumentURL;
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NS_IF_ADDREF(aDocumentURL);
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return NS_OK;
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}
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NS_IMETHODIMP RobotSink::AddObserver(nsIRobotSinkObserver* aObserver)
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{
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if (mObservers.AppendElement(aObserver)) {
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NS_ADDREF(aObserver);
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return NS_OK;
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}
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_IMETHODIMP RobotSink::RemoveObserver(nsIRobotSinkObserver* aObserver)
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{
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if (mObservers.RemoveElement(aObserver)) {
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NS_RELEASE(aObserver);
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return NS_OK;
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}
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//XXX return NS_ERROR_NOT_FOUND;
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return NS_OK;
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}
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void RobotSink::ProcessLink(const nsString& aLink)
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{
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nsAutoString absURLSpec(aLink);
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// Make link absolute
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// XXX base tag handling
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nsIURL* docURL = mDocumentURL;
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if (nsnull != docURL) {
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nsIURL* absurl;
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nsresult rv = NS_NewURL(&absurl, aLink, docURL);
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if (NS_OK == rv) {
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absURLSpec.Truncate();
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PRUnichar* str;
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absurl->ToString(&str);
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absURLSpec = str;
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NS_RELEASE(absurl);
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delete str;
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}
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}
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// Now give link to robot observers
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PRInt32 i, n = mObservers.Count();
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for (i = 0; i < n; i++) {
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nsIRobotSinkObserver* cop = (nsIRobotSinkObserver*)mObservers.ElementAt(i);
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cop->ProcessLink(absURLSpec);
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}
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}
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