280 lines
11 KiB
C++
280 lines
11 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
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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/NPL/
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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 mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef NS_IPARSER___
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#define NS_IPARSER___
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/**
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* MODULE NOTES:
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* @update gess 4/1/98
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*
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* This class defines the iparser interface. This XPCOM
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* inteface is all that parser clients ever need to see.
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*
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**/
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#include "nshtmlpars.h"
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#include "nsISupports.h"
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#include "nsIStreamListener.h"
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#include "nsIDTD.h"
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#include "nsIInputStream.h"
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#define NS_IPARSER_IID \
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{0x355cbba0, 0xbf7d, 0x11d1, \
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{0xaa, 0xd9, 0x00, 0x80, 0x5f, 0x8a, 0x3e, 0x14}}
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class nsIContentSink;
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class nsIStreamObserver;
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class nsIParserFilter;
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class nsString;
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class nsIURI;
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enum eCRCQuality {
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eCRCGood = 0,
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eCRCFair,
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eCRCPoor
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};
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typedef enum {
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kCharsetUninitialized = 0,
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kCharsetFromWeakDocTypeDefault,
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kCharsetFromUserDefault ,
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kCharsetFromDocTypeDefault,
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kCharsetFromParentFrame,
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kCharsetFromAutoDetection,
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kCharsetFromMetaTag,
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kCharsetFromByteOrderMark,
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kCharsetFromHTTPHeader,
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kCharsetFromUserForced,
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kCharsetFromOtherComponent,
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kCharsetFromPreviousLoading
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} nsCharsetSource;
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enum eStreamState {eNone,eOnStart,eOnDataAvail,eOnStop};
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class nsITagStack {
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public:
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virtual void Push(PRUnichar* aTag)=0;
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virtual PRUnichar* Pop(void)=0;
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virtual PRUnichar* TagAt(PRUint32 anIndex)=0;
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virtual PRUint32 GetSize(void)=0;
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};
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/**
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* This class defines the iparser interface. This XPCOM
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* inteface is all that parser clients ever need to see.
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*
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* @update gess 3/25/98
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*/
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class nsIParser : public nsISupports {
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public:
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static const nsIID& GetIID() { static nsIID iid = NS_IPARSER_IID; return iid; }
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/**
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* Call this method if you have a DTD that you want to share with the parser.
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* Registered DTD's get remembered until the system shuts down.
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*
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* @update gess 3/25/98
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* @param aDTD -- ptr DTD that you're publishing the services of
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*/
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virtual void RegisterDTD(nsIDTD* aDTD)=0;
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/**
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* Select given content sink into parser for parser output
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* @update gess5/11/98
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* @param aSink is the new sink to be used by parser
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* @return old sink, or NULL
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*/
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virtual nsIContentSink* SetContentSink(nsIContentSink* aSink)=0;
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/**
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* retrive the sink set into the parser
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* @update gess5/11/98
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* @param aSink is the new sink to be used by parser
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* @return old sink, or NULL
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*/
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virtual nsIContentSink* GetContentSink(void)=0;
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/**
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* Call this method once you've created a parser, and want to instruct it
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* about the command which caused the parser to be constructed. For example,
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* this allows us to select a DTD which can do, say, view-source.
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*
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* @update gess 3/25/98
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* @param aCommand -- ptrs to string that contains command
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* @return nada
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*/
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virtual void SetCommand(const char* aCommand)=0;
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/**
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* Call this method once you've created a parser, and want to instruct it
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* about what charset to load
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*
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* @update ftang 4/23/99
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* @param aCharset- the charest of a document
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* @param aCharsetSource- the soure of the chares
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* @return nada
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*/
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virtual void SetDocumentCharset(nsString& aCharset, nsCharsetSource aSource)=0;
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virtual void GetDocumentCharset(nsString& oCharset, nsCharsetSource& oSource)=0;
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virtual nsIParserFilter* SetParserFilter(nsIParserFilter* aFilter) = 0;
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/**
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* Call this to get a newly constructed tagstack
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* @update gess 5/05/99
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* @param aTagStack is an out parm that will contain your result
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* @return NS_OK if successful, or NS_HTMLPARSER_MEMORY_ERROR on error
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*/
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virtual nsresult CreateTagStack(nsITagStack** aTagStack)=0;
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/**
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* Get the DTD associated with this parser
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* @update vidur 9/29/99
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* @param aDTD out param that will contain the result
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* @return NS_OK if successful, NS_ERROR_FAILURE for runtime error
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*/
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NS_IMETHOD GetDTD(nsIDTD** aDTD) = 0;
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/******************************************************************************************
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* Parse methods always begin with an input source, and perform conversions
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* until you wind up being emitted to the given contentsink (which may or may not
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* be a proxy for the NGLayout content model).
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******************************************************************************************/
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virtual nsresult EnableParser(PRBool aState) = 0;
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virtual PRBool IsParserEnabled() = 0;
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virtual nsresult Parse(nsIURI* aURL,nsIStreamObserver* aListener = nsnull,PRBool aEnableVerify=PR_FALSE, void* aKey=0,eParseMode aMode=eParseMode_autodetect) = 0;
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virtual nsresult Parse(nsIInputStream& aStream, PRBool aEnableVerify=PR_FALSE, void* aKey=0,eParseMode aMode=eParseMode_autodetect) = 0;
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virtual nsresult Parse(const nsString& aSourceBuffer,void* aKey,const nsString& aContentType,PRBool aEnableVerify,PRBool aLastCall,eParseMode aMode=eParseMode_autodetect) = 0;
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virtual nsresult Terminate(void) = 0;
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virtual PRBool IsValidFragment(const nsString& aSourceBuffer,nsITagStack& aStack,PRUint32 anInsertPos,const nsString& aContentType,eParseMode aMode=eParseMode_autodetect)=0;
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virtual nsresult ParseFragment(const nsString& aSourceBuffer,void* aKey,nsITagStack& aStack,PRUint32 anInsertPos,const nsString& aContentType,eParseMode aMode=eParseMode_autodetect)=0;
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/**
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* This method gets called when the tokens have been consumed, and it's time
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* to build the model via the content sink.
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* @update gess5/11/98
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* @return error code -- 0 if model building went well .
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*/
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virtual nsresult BuildModel(void)=0;
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/**
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* Retrieve the parse mode from the parser...
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*
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* @update gess 6/9/98
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* @return ptr to scanner
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*/
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virtual eParseMode GetParseMode(void)=0;
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};
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/* ===========================================================*
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Some useful constants...
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* ===========================================================*/
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#include "prtypes.h"
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#include "nsError.h"
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#define NS_ERROR_HTMLPARSER_EOF NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1000)
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#define NS_ERROR_HTMLPARSER_UNKNOWN NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1001)
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#define NS_ERROR_HTMLPARSER_CANTPROPAGATE NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1002)
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#define NS_ERROR_HTMLPARSER_CONTEXTMISMATCH NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1003)
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#define NS_ERROR_HTMLPARSER_BADFILENAME NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1004)
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#define NS_ERROR_HTMLPARSER_BADURL NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1005)
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#define NS_ERROR_HTMLPARSER_INVALIDPARSERCONTEXT NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1006)
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#define NS_ERROR_HTMLPARSER_INTERRUPTED NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1007)
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#define NS_ERROR_HTMLPARSER_BLOCK NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1008)
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#define NS_ERROR_HTMLPARSER_BADTOKENIZER NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1009)
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#define NS_ERROR_HTMLPARSER_BADATTRIBUTE NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1010)
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#define NS_ERROR_HTMLPARSER_UNRESOLVEDDTD NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1011)
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#define NS_ERROR_HTMLPARSER_MISPLACED NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1012)
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#define NS_ERROR_HTMLPARSER_BADDTD NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1013)
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#define NS_ERROR_HTMLPARSER_BADCONTEXT NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1014)
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#define NS_ERROR_HTMLPARSER_STOPPARSING NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1015)
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#define NS_ERROR_HTMLPARSER_CONTINUE NS_OK
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const PRUint32 kEOF = NS_ERROR_HTMLPARSER_EOF;
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const PRUint32 kUnknownError = NS_ERROR_HTMLPARSER_UNKNOWN;
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const PRUint32 kCantPropagate = NS_ERROR_HTMLPARSER_CANTPROPAGATE;
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const PRUint32 kContextMismatch = NS_ERROR_HTMLPARSER_CONTEXTMISMATCH;
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const PRUint32 kBadFilename = NS_ERROR_HTMLPARSER_BADFILENAME;
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const PRUint32 kBadURL = NS_ERROR_HTMLPARSER_BADURL;
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const PRUint32 kInvalidParserContext = NS_ERROR_HTMLPARSER_INVALIDPARSERCONTEXT;
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const PRUint32 kBlocked = NS_ERROR_HTMLPARSER_BLOCK;
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const PRUnichar kNewLine = '\n';
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const PRUnichar kCR = '\r';
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const PRUnichar kLF = '\n';
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const PRUnichar kTab = '\t';
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const PRUnichar kSpace = ' ';
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const PRUnichar kQuote = '"';
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const PRUnichar kApostrophe = '\'';
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const PRUnichar kLessThan = '<';
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const PRUnichar kGreaterThan = '>';
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const PRUnichar kAmpersand = '&';
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const PRUnichar kForwardSlash = '/';
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const PRUnichar kBackSlash = '\\';
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const PRUnichar kEqual = '=';
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const PRUnichar kMinus = '-';
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const PRUnichar kPlus = '+';
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const PRUnichar kExclamation = '!';
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const PRUnichar kSemicolon = ';';
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const PRUnichar kHashsign = '#';
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const PRUnichar kAsterisk = '*';
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const PRUnichar kUnderbar = '_';
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const PRUnichar kComma = ',';
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const PRUnichar kLeftParen = '(';
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const PRUnichar kRightParen = ')';
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const PRUnichar kLeftBrace = '{';
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const PRUnichar kRightBrace = '}';
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const PRUnichar kQuestionMark = '?';
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const PRUnichar kLeftSquareBracket = '[';
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const PRUnichar kRightSquareBracket = ']';
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const PRUnichar kNullCh = '\0';
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#define kHTMLTextContentType "text/html"
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#define kXMLTextContentType "text/xml"
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#define kXULTextContentType "text/xul"
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#define kRDFTextContentType "text/rdf"
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#define kXIFTextContentType "text/xif"
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#define kPlainTextContentType "text/plain"
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#define kViewSourceCommand "view-source"
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#define kTextCSSContentType "text/css"
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#endif
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