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gecko/parser/htmlparser/public/nsIParser.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* ***** 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
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 NS_IPARSER___
#define NS_IPARSER___
/**
* MODULE NOTES:
*
* This class defines the iparser interface. This XPCOM
* inteface is all that parser clients ever need to see.
*
**/
#include "nsISupports.h"
#include "nsIStreamListener.h"
#include "nsIDTD.h"
#include "nsStringGlue.h"
#include "nsTArray.h"
// 506527cc-d832-420b-ba3a-80c05aa105f4
#define NS_IPARSER_IID \
{ 0x506527cc, 0xd832, 0x420b, \
{ 0xba, 0x3a, 0x80, 0xc0, 0x5a, 0xa1, 0x05, 0xf4 } }
// {41421C60-310A-11d4-816F-000064657374}
#define NS_IDEBUG_DUMP_CONTENT_IID \
{ 0x41421c60, 0x310a, 0x11d4, \
{ 0x81, 0x6f, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74 } }
class nsIContentSink;
class nsIRequestObserver;
class nsIParserFilter;
class nsString;
class nsIURI;
class nsIChannel;
enum eParserCommands {
eViewNormal,
eViewSource,
eViewFragment,
eViewErrors
};
enum eParserDocType {
ePlainText = 0,
eXML,
eHTML_Quirks,
eHTML_Strict
};
// define Charset source constants
// note: the value order defines the priority; higher numbers take priority
#define kCharsetUninitialized 0
#define kCharsetFromWeakDocTypeDefault 1
#define kCharsetFromUserDefault 2
#define kCharsetFromDocTypeDefault 3
#define kCharsetFromCache 4
#define kCharsetFromParentFrame 5
#define kCharsetFromBookmarks 6
#define kCharsetFromAutoDetection 7
#define kCharsetFromHintPrevDoc 8
#define kCharsetFromMetaTag 9
#define kCharsetFromByteOrderMark 10
#define kCharsetFromChannel 11
#define kCharsetFromOtherComponent 12
// Levels below here will be forced onto childframes too
#define kCharsetFromParentForced 13
#define kCharsetFromUserForced 14
#define kCharsetFromPreviousLoading 15
enum eStreamState {eNone,eOnStart,eOnDataAvail,eOnStop};
/**
* FOR DEBUG PURPOSE ONLY
*
* Use this interface to query objects that contain content information.
* Ex. Parser can trigger dump content by querying the sink that has
* access to the content.
*
* @update harishd 05/25/00
*/
class nsIDebugDumpContent : public nsISupports {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IDEBUG_DUMP_CONTENT_IID)
NS_IMETHOD DumpContentModel()=0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIDebugDumpContent, NS_IDEBUG_DUMP_CONTENT_IID)
/**
* This class defines the iparser interface. This XPCOM
* inteface is all that parser clients ever need to see.
*/
class nsIParser : public nsISupports {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IPARSER_IID)
/**
* Select given content sink into parser for parser output
* @update gess5/11/98
* @param aSink is the new sink to be used by parser
* @return
*/
NS_IMETHOD_(void) SetContentSink(nsIContentSink* aSink)=0;
/**
* retrieve the sink set into the parser
* @update gess5/11/98
* @return current sink
*/
NS_IMETHOD_(nsIContentSink*) GetContentSink(void)=0;
/**
* Call this method once you've created a parser, and want to instruct it
* about the command which caused the parser to be constructed. For example,
* this allows us to select a DTD which can do, say, view-source.
*
* @update gess 3/25/98
* @param aCommand -- ptrs to string that contains command
* @return nada
*/
NS_IMETHOD_(void) GetCommand(nsCString& aCommand)=0;
NS_IMETHOD_(void) SetCommand(const char* aCommand)=0;
NS_IMETHOD_(void) SetCommand(eParserCommands aParserCommand)=0;
/**
* Call this method once you've created a parser, and want to instruct it
* about what charset to load
*
* @update ftang 4/23/99
* @param aCharset- the charest of a document
* @param aCharsetSource- the soure of the chares
* @return nada
*/
NS_IMETHOD_(void) SetDocumentCharset(const nsACString& aCharset, PRInt32 aSource)=0;
NS_IMETHOD_(void) GetDocumentCharset(nsACString& oCharset, PRInt32& oSource)=0;
NS_IMETHOD_(void) SetParserFilter(nsIParserFilter* aFilter) = 0;
/**
* Get the channel associated with this parser
* @update harishd,gagan 07/17/01
* @param aChannel out param that will contain the result
* @return NS_OK if successful
*/
NS_IMETHOD GetChannel(nsIChannel** aChannel) = 0;
/**
* Get the DTD associated with this parser
* @update vidur 9/29/99
* @param aDTD out param that will contain the result
* @return NS_OK if successful, NS_ERROR_FAILURE for runtime error
*/
NS_IMETHOD GetDTD(nsIDTD** aDTD) = 0;
/**************************************************************************
* Parse methods always begin with an input source, and perform
* conversions until you wind up being emitted to the given contentsink
* (which may or may not be a proxy for the NGLayout content model).
************************************************************************/
// Call this method to resume the parser from the blocked state.
NS_IMETHOD ContinueParsing() = 0;
// Call this method to resume the parser from an unblocked state.
// This can happen, for example, if parsing was interrupted and then the
// consumer needed to restart the parser without waiting for more data.
// This also happens after loading scripts, which unblock the parser in
// order to process the output of document.write() and then need to
// continue on with the page load on an enabled parser.
NS_IMETHOD ContinueInterruptedParsing() = 0;
// Stops parsing temporarily.
NS_IMETHOD_(void) BlockParser() = 0;
// Open up the parser for tokenization, building up content
// model..etc. However, this method does not resume parsing
// automatically. It's the callers' responsibility to restart
// the parsing engine.
NS_IMETHOD_(void) UnblockParser() = 0;
NS_IMETHOD_(PRBool) IsParserEnabled() = 0;
NS_IMETHOD_(PRBool) IsComplete() = 0;
NS_IMETHOD Parse(nsIURI* aURL,
nsIRequestObserver* aListener = nsnull,
void* aKey = 0,
nsDTDMode aMode = eDTDMode_autodetect) = 0;
NS_IMETHOD Parse(const nsAString& aSourceBuffer,
void* aKey,
const nsACString& aMimeType,
PRBool aLastCall,
nsDTDMode aMode = eDTDMode_autodetect) = 0;
// Return a key, suitable for passing into one of the Parse methods above,
// that will cause this parser to use the root context.
NS_IMETHOD_(void *) GetRootContextKey() = 0;
NS_IMETHOD Terminate(void) = 0;
/**
* This method gets called when you want to parse a fragment of HTML or XML
* surrounded by the context |aTagStack|. It requires that the parser have
* been given a fragment content sink.
*
* @param aSourceBuffer The XML or HTML that hasn't been parsed yet.
* @param aKey The key used by the parser.
* @param aTagStack The context of the source buffer.
* @param aXMLMode Whether this is XML or HTML
* @param aContentType The content-type of this document.
* @param aMode The DTDMode that the parser should parse this fragment in.
* @return Success or failure.
*/
NS_IMETHOD ParseFragment(const nsAString& aSourceBuffer,
void* aKey,
nsTArray<nsString>& aTagStack,
PRBool aXMLMode,
const nsACString& aContentType,
nsDTDMode aMode = eDTDMode_autodetect) = 0;
/**
* This method gets called when the tokens have been consumed, and it's time
* to build the model via the content sink.
* @update gess5/11/98
* @return error code -- 0 if model building went well .
*/
NS_IMETHOD BuildModel(void) = 0;
/**
* Retrieve the parse mode from the parser...
*
* @update gess 6/9/98
* @return ptr to scanner
*/
NS_IMETHOD_(nsDTDMode) GetParseMode(void) = 0;
/**
* Call this method to cancel any pending parsing events.
* Parsing events may be pending if all of the document's content
* has been passed to the parser but the parser has been interrupted
* because processing the tokens took too long.
*
* @update kmcclusk 05/18/01
* @return NS_OK if succeeded else ERROR.
*/
NS_IMETHOD CancelParsingEvents() = 0;
virtual void Reset() = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIParser, NS_IPARSER_IID)
/* ===========================================================*
Some useful constants...
* ===========================================================*/
#include "prtypes.h"
#include "nsError.h"
#define NS_ERROR_HTMLPARSER_EOF NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1000)
#define NS_ERROR_HTMLPARSER_UNKNOWN NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1001)
#define NS_ERROR_HTMLPARSER_CANTPROPAGATE NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1002)
#define NS_ERROR_HTMLPARSER_CONTEXTMISMATCH NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1003)
#define NS_ERROR_HTMLPARSER_BADFILENAME NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1004)
#define NS_ERROR_HTMLPARSER_BADURL NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1005)
#define NS_ERROR_HTMLPARSER_INVALIDPARSERCONTEXT NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1006)
#define NS_ERROR_HTMLPARSER_INTERRUPTED NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1007)
#define NS_ERROR_HTMLPARSER_BLOCK NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1008)
#define NS_ERROR_HTMLPARSER_BADTOKENIZER NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1009)
#define NS_ERROR_HTMLPARSER_BADATTRIBUTE NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1010)
#define NS_ERROR_HTMLPARSER_UNRESOLVEDDTD NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1011)
#define NS_ERROR_HTMLPARSER_MISPLACEDTABLECONTENT NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1012)
#define NS_ERROR_HTMLPARSER_BADDTD NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1013)
#define NS_ERROR_HTMLPARSER_BADCONTEXT NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1014)
#define NS_ERROR_HTMLPARSER_STOPPARSING NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1015)
#define NS_ERROR_HTMLPARSER_UNTERMINATEDSTRINGLITERAL NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1016)
#define NS_ERROR_HTMLPARSER_HIERARCHYTOODEEP NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1017)
#define NS_ERROR_HTMLPARSER_FAKE_ENDTAG NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1018)
#define NS_ERROR_HTMLPARSER_INVALID_COMMENT NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_HTMLPARSER,1019)
#define NS_ERROR_HTMLPARSER_CONTINUE NS_OK
const PRUint32 kEOF = NS_ERROR_HTMLPARSER_EOF;
const PRUint32 kUnknownError = NS_ERROR_HTMLPARSER_UNKNOWN;
const PRUint32 kCantPropagate = NS_ERROR_HTMLPARSER_CANTPROPAGATE;
const PRUint32 kContextMismatch = NS_ERROR_HTMLPARSER_CONTEXTMISMATCH;
const PRUint32 kBadFilename = NS_ERROR_HTMLPARSER_BADFILENAME;
const PRUint32 kBadURL = NS_ERROR_HTMLPARSER_BADURL;
const PRUint32 kInvalidParserContext = NS_ERROR_HTMLPARSER_INVALIDPARSERCONTEXT;
const PRUint32 kBlocked = NS_ERROR_HTMLPARSER_BLOCK;
const PRUint32 kBadStringLiteral = NS_ERROR_HTMLPARSER_UNTERMINATEDSTRINGLITERAL;
const PRUint32 kHierarchyTooDeep = NS_ERROR_HTMLPARSER_HIERARCHYTOODEEP;
const PRUint32 kFakeEndTag = NS_ERROR_HTMLPARSER_FAKE_ENDTAG;
const PRUint32 kNotAComment = NS_ERROR_HTMLPARSER_INVALID_COMMENT;
const PRUnichar kNewLine = '\n';
const PRUnichar kCR = '\r';
const PRUnichar kLF = '\n';
const PRUnichar kTab = '\t';
const PRUnichar kSpace = ' ';
const PRUnichar kQuote = '"';
const PRUnichar kApostrophe = '\'';
const PRUnichar kLessThan = '<';
const PRUnichar kGreaterThan = '>';
const PRUnichar kAmpersand = '&';
const PRUnichar kForwardSlash = '/';
const PRUnichar kBackSlash = '\\';
const PRUnichar kEqual = '=';
const PRUnichar kMinus = '-';
const PRUnichar kPlus = '+';
const PRUnichar kExclamation = '!';
const PRUnichar kSemicolon = ';';
const PRUnichar kHashsign = '#';
const PRUnichar kAsterisk = '*';
const PRUnichar kUnderbar = '_';
const PRUnichar kComma = ',';
const PRUnichar kLeftParen = '(';
const PRUnichar kRightParen = ')';
const PRUnichar kLeftBrace = '{';
const PRUnichar kRightBrace = '}';
const PRUnichar kQuestionMark = '?';
const PRUnichar kLeftSquareBracket = '[';
const PRUnichar kRightSquareBracket = ']';
const PRUnichar kNullCh = '\0';
// XXXbz these type defines should really just go away.... Until they
// do, changes here should be reflected in nsContentDLF.cpp
#define kHTMLTextContentType "text/html"
#define kXMLTextContentType "text/xml"
#define kXMLApplicationContentType "application/xml"
#define kXHTMLApplicationContentType "application/xhtml+xml"
#define kXULTextContentType "application/vnd.mozilla.xul+xml"
#define kRDFTextContentType "text/rdf"
#define kRDFApplicationContentType "application/rdf+xml"
#define kXIFTextContentType "text/xif"
#define kPlainTextContentType "text/plain"
#define kViewSourceCommand "view-source"
#define kViewFragmentCommand "view-fragment"
#define kTextCSSContentType "text/css"
#define kApplicationJSContentType "application/javascript"
#define kApplicationXJSContentType "application/x-javascript"
#define kTextECMAScriptContentType "text/ecmascript"
#define kApplicationECMAScriptContentType "application/ecmascript"
#define kTextJSContentType "text/javascript"
#define kSGMLTextContentType "text/sgml"
#define kSVGTextContentType "image/svg+xml"
#define NS_IPARSER_FLAG_UNKNOWN_MODE 0x00000000
#define NS_IPARSER_FLAG_QUIRKS_MODE 0x00000002
#define NS_IPARSER_FLAG_STRICT_MODE 0x00000004
#define NS_IPARSER_FLAG_AUTO_DETECT_MODE 0x00000010
#define NS_IPARSER_FLAG_VIEW_NORMAL 0x00000020
#define NS_IPARSER_FLAG_VIEW_SOURCE 0x00000040
#define NS_IPARSER_FLAG_VIEW_ERRORS 0x00000080
#define NS_IPARSER_FLAG_PLAIN_TEXT 0x00000100
#define NS_IPARSER_FLAG_XML 0x00000200
#define NS_IPARSER_FLAG_HTML 0x00000400
#define NS_IPARSER_FLAG_SCRIPT_ENABLED 0x00000800
#define NS_IPARSER_FLAG_FRAMES_ENABLED 0x00001000
#endif
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