expatprs.cpp

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/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: expatprs.cpp,v 1.6.22.1 2004/07/19 21:04:07 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
 * The contents of this file, and the files included with this file,
 * are subject to the current version of the RealNetworks Public
 * Source License (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
 * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
 * will apply. You may also obtain the license terms directly from
 * RealNetworks.  You may not use this file except in compliance with
 * the RPSL or, if you have a valid RCSL with RealNetworks applicable
 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
 * the rights, obligations and limitations governing use of the
 * contents of the file.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. 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
 * RPSL, the RCSL or the GPL.
 * 
 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
 * portions it created.
 * 
 * This file, and the files included with this file, is distributed
 * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
 * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
 * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
 * ENJOYMENT OR NON-INFRINGEMENT.
 * 
 * Technology Compatibility Kit Test Suite(s) Location:
 *    http://www.helixcommunity.org/content/tck
 * 
 * Contributor(s):
 * 
 * ***** END LICENSE BLOCK ***** */
//  $Id: expatprs.cpp,v 1.6.22.1 2004/07/19 21:04:07 hubbe Exp $

#include "hlxclib/string.h"
#include "hxtypes.h"
#include "hxresult.h"
#include "hxassert.h"
#include "hxheap.h"

#include "hxcom.h"
#include "hxcomm.h"
#include "hxfiles.h"
#include "ihxpckts.h"
#include "hxxml.h"
#include "hxplugn.h"
#include "xmlreslt.h"

#include "hxxres.h"
#include "hxxrsmg.h"

#include "hxxml.ver"
#include "xmlparse.h"
#include "expatprs.h"
#include "expatapi.h"
#include "ctype.h"

#include "hxperf.h"

#ifdef _DEBUG
#undef HX_THIS_FILE		
static const char HX_THIS_FILE[] = __FILE__;
#endif

#define MAX_ATTRIBUTE_SIZE 255


HXExpatXMLParser::HXExpatXMLParser(IUnknown* pContext)
: m_lRefCount(0)
, m_pParser(NULL)
, m_pResponse(NULL)
, m_pContext(pContext)
, m_pClassFactory(NULL)
, m_pCurrentBuffer(NULL)
, m_ulCurrentOffset(0)
, m_pNSResp(NULL)
, m_bInited(FALSE)
{
    m_pContext->AddRef();
    m_pContext->QueryInterface(IID_IHXCommonClassFactory, 
	(void**)&m_pClassFactory);
}

HXExpatXMLParser::~HXExpatXMLParser()
{
    Close();
    HX_RELEASE(m_pContext);
    HX_RELEASE(m_pClassFactory);
}

/************************************************************************
 *  IUnknown COM Interface Methods                          ref:  hxcom.h
 */
STDMETHODIMP 
HXExpatXMLParser::QueryInterface(REFIID riid, void** ppvObj)
{
    if (IsEqualIID(riid, IID_IUnknown))
    {
	AddRef();
	*ppvObj = this;
	return HXR_OK;
    }
    else if (IsEqualIID(riid, IID_IHXXMLParser))
    {
	AddRef();
	*ppvObj = (IHXXMLParser*)this;
	return HXR_OK;
    }
    else if (IsEqualIID(riid, IID_IHXXMLNamespaceParser))
    {
	AddRef();
	*ppvObj = (IHXXMLNamespaceParser*)this;
	return HXR_OK;
    }

    *ppvObj = NULL;
    return HXR_NOINTERFACE;
}

STDMETHODIMP_(UINT32)
HXExpatXMLParser::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

STDMETHODIMP_(UINT32)
HXExpatXMLParser::Release()
{
    if (InterlockedDecrement(&m_lRefCount) > 0)
    {
	return m_lRefCount;
    }
    delete this;
    return 0;
}

/*
 * IHXXMLNamespaceParser methods
 */
STDMETHODIMP
HXExpatXMLParser::InitNamespaceParser(
		       IHXXMLParserResponse* /*IN*/  pResponse,
		       IHXXMLNamespaceResponse*      pNSResp,
		       const char*	    /*IN*/    pEncoding,
		       const char		      sepChar)
{
    HX_LOG_BLOCK( "HXExpatXMLParser::InitNamespaceParser" );

    if (m_bInited)
    {
	return HXR_UNEXPECTED;
    }
    HX_RESULT rc = HXR_OK;
    if (pResponse)
    {
	m_pResponse = pResponse;
	m_pResponse->AddRef();
    }

    if (pNSResp)
    {
	m_pNSResp = pNSResp;
	m_pNSResp->AddRef();
    }

    m_cSepChar = sepChar;
    if (pEncoding)
    {
	m_pParser = XML_ParserCreateNS(pEncoding, sepChar);
    }
    else
    {
	/* use iso-8859-1 by default */
	m_pParser = XML_ParserCreateNS("iso-8859-1", sepChar);
    }

    if (m_pParser == NULL)
    {
	rc = HXR_OUTOFMEMORY;
    }
    if (SUCCEEDED(rc))
    {
	XML_SetUserData(m_pParser, this);
	XML_SetElementHandler(m_pParser, ::handleStartElement, 
	    ::handleEndElement);
	XML_SetCharacterDataHandler(m_pParser, ::handleCharacterData);
	XML_SetProcessingInstructionHandler(m_pParser, 
	    ::handleProcessingInstruction);
	XML_SetCommentHandler(m_pParser, ::handleComment);
    
	//XML_SetCdataSectionHandler(m_pParser, ::handleStartCdataSection,  
	//    ::handleEndCdataSection);
    
	XML_SetCharacterDataHandler(m_pParser, ::handleCharacterData);
	XML_SetUnparsedEntityDeclHandler(m_pParser, ::handleUnparsedEntityDecl);
	XML_SetNotationDeclHandler(m_pParser, ::handleNotationDecl);
	XML_SetDefaultHandler(m_pParser, ::handleDefault);

	XML_SetNamespaceDeclHandler(m_pParser, ::handleStartNamespaceDecl,
		::handleEndNamespaceDecl);
    }

    m_bInited = TRUE;
    return rc;
}

STDMETHODIMP_(char)
HXExpatXMLParser::GetSepChar()
{
    return m_cSepChar;
}


/*
 * IHXXMLParser methods
 */
STDMETHODIMP
HXExpatXMLParser::Init(IHXXMLParserResponse* /*IN*/  pResponse,
		       const char*	    /*IN*/	pEncoding,
		       BOOL		    /*IN*/	bStrict)
{
    HX_LOG_BLOCK( "HXExpatXMLParser::Init" );

    if (m_bInited)
    {
	return HXR_UNEXPECTED;
    }
    HX_RESULT rc = HXR_OK;
    if (pResponse)
    {
	m_pResponse = pResponse;
	m_pResponse->AddRef();
    }

    if (pEncoding)
    {
	m_pParser = XML_ParserCreate(pEncoding);
    }
    else
    {
	/* use iso-8859-1 by default */
	m_pParser = XML_ParserCreate("iso-8859-1");
    }

    if (m_pParser == NULL)
    {
	rc = HXR_OUTOFMEMORY;
    }
    if (SUCCEEDED(rc))
    {
	XML_SetUserData(m_pParser, this);
	XML_SetElementHandler(m_pParser, ::handleStartElement, 
	    ::handleEndElement);
	XML_SetCharacterDataHandler(m_pParser, ::handleCharacterData);
	XML_SetProcessingInstructionHandler(m_pParser, 
	    ::handleProcessingInstruction);
	XML_SetCommentHandler(m_pParser, ::handleComment);
    
	//XML_SetCdataSectionHandler(m_pParser, ::handleStartCdataSection,  
	//    ::handleEndCdataSection);
    
	XML_SetCharacterDataHandler(m_pParser, ::handleCharacterData);
	XML_SetUnparsedEntityDeclHandler(m_pParser, ::handleUnparsedEntityDecl);
	XML_SetNotationDeclHandler(m_pParser, ::handleNotationDecl);
	XML_SetDefaultHandler(m_pParser, ::handleDefault);
    }
    m_bInited = TRUE;
    return rc;
}

STDMETHODIMP
HXExpatXMLParser::Close()
{
    HX_RELEASE(m_pResponse);
    HX_RELEASE(m_pNSResp);
    HX_RELEASE(m_pCurrentBuffer);
    m_ulCurrentOffset = 0;
    m_bInited = FALSE;
    if (m_pParser)
    {
	XML_ParserFree(m_pParser);
	m_pParser = NULL;
    }
    return HXR_OK;
}


STDMETHODIMP
HXExpatXMLParser::Parse(IHXBuffer*	/*IN*/	    pBuffer,
			 BOOL		/*IN*/	    bIsFinal)
{
    HX_LOG_BLOCK( "HXExpatXMLParser::Parse" );

    if (m_pParser)
    {
	if (m_pCurrentBuffer)
	{
	    m_ulCurrentOffset += m_pCurrentBuffer->GetSize();
	    HX_RELEASE(m_pCurrentBuffer);
	}
	m_pCurrentBuffer = pBuffer;
	m_pCurrentBuffer->AddRef();
	if (!XML_Parse(m_pParser, (const XML_Char*)m_pCurrentBuffer->GetBuffer(), 
		m_pCurrentBuffer->GetSize(), bIsFinal))
	{
	    XML_Error code = XML_GetErrorCode(m_pParser);
	    switch (code)
	    {
	    case XML_ERROR_NONE:
		return HXR_FAIL;
	    case XML_ERROR_NO_MEMORY:
		return HXR_OUTOFMEMORY;
	    case XML_ERROR_SYNTAX:
		return HXR_XML_SYNTAX;
	    case XML_ERROR_NO_ELEMENTS:
		return HXR_XML_NO_ELEMENTS;
// we removed this error in favor of more specific errors
//	    case XML_ERROR_INVALID_TOKEN:
//		return HXR_XML_INVALID_TOKEN;
	    case XML_ERROR_UNCLOSED_TOKEN:
		return HXR_XML_UNCLOSED_TOKEN;
	    case XML_ERROR_PARTIAL_CHAR:
		return HXR_XML_PARTIAL_CHAR;
	    case XML_ERROR_TAG_MISMATCH:
		return HXR_XML_TAG_MISMATCH;
	    case XML_ERROR_DUPLICATE_ATTRIBUTE:
		// HXR_XML_DUPLICATE_ATTRIBUTE;
		return HXR_XML_DUPATTRIBUTE;
	    case XML_ERROR_JUNK_AFTER_DOC_ELEMENT:
		return HXR_XML_JUNK_AFTER_DOC_ELEMENT;
	    case XML_ERROR_PARAM_ENTITY_REF:
		return HXR_XML_PARAM_ENTITY_REF;
	    case XML_ERROR_UNDEFINED_ENTITY:
		return HXR_XML_UNDEFINED_ENTITY;
	    case XML_ERROR_RECURSIVE_ENTITY_REF:
		return HXR_XML_RECURSIVE_ENTITY_REF;
	    case XML_ERROR_ASYNC_ENTITY:
		return HXR_XML_ASYNC_ENTITY;
	    case XML_ERROR_BAD_CHAR_REF:
		return HXR_XML_BAD_CHAR_REF;
	    case XML_ERROR_BINARY_ENTITY_REF:
		return HXR_XML_BINARY_ENTITY_REF;
	    case XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF:
		return PNR_XML_ATTRIBUTE_EXTEHXAL_ENTITY_REF;
	    case XML_ERROR_MISPLACED_XML_PI:
		return HXR_XML_MISPLACED_XML_PI;
	    case XML_ERROR_UNKNOWN_ENCODING:
		return HXR_XML_UNKNOWN_ENCODING;
	    case XML_ERROR_INCORRECT_ENCODING:
		return HXR_XML_INCORRECT_ENCODING;
	    case XML_ERROR_UNCLOSED_CDATA_SECTION:
		return HXR_XML_UNCLOSED_CDATA_SECTION;
	    case XML_ERROR_EXTERNAL_ENTITY_HANDLING:
		return PNR_XML_EXTEHXAL_ENTITY_HANDLING;
	    case XML_ERROR_NOT_STANDALONE:
		return HXR_XML_NOT_STANDALONE;
            case XML_ERROR_INVALID_NAME:
		return HXR_XML_INVALID_NAME;
            case XML_ERROR_INVALID_CHAR_IN_DOC:
		return HXR_XML_INVALID_CHAR_IN_DOC;
            case XML_ERROR_TWO_DASHES_NOT_ALLOWED_IN_COMMENT:
		return HXR_XML_TWO_DASHES_NOT_ALLOWED_IN_COMMENT;
            case XML_ERROR_INVALID_DECL:
		return HXR_XML_INVALID_DECL;
            case XML_ERROR_INVALID_PI: 
		return HXR_XML_INVALID_PI;
            case XML_ERROR_INVALID_PI_TARGET: 
		return HXR_XML_INVALID_PI_TARGET;
            case XML_ERROR_INVALID_CDATA: 
		return HXR_XML_INVALID_CDATA;
            case XML_ERROR_NO_CLOSING_GT: 
		return HXR_XML_NO_CLOSING_GT;
            case XML_ERROR_INVALID_HEX_CHAR_REF: 
		return HXR_XML_INVALID_HEX_CHAR_REF;
            case XML_ERROR_INVALID_CHAR_REF: 
		return HXR_XML_INVALID_CHAR_REF;
            case XML_ERROR_INVALID_REF: 
		return HXR_XML_INVALID_REF;
            case XML_ERROR_MISSING_EQUALS: 
		return HXR_XML_MISSING_EQUALS;
            case XML_ERROR_MISSING_QUOT_APOS: 
		// HXR_XML_MISSING_QUOT_APOS;
		return HXR_XML_MISSINGQUOTE;
            case XML_ERROR_MISSING_REQ_SPACE: 
		return HXR_XML_MISSING_REQ_SPACE;
            case XML_ERROR_LT_NOT_ALLOWED: 
		return HXR_XML_LT_NOT_ALLOWED;
            case XML_ERROR_EXPECTED_GT: 
		return HXR_XML_EXPECTED_GT;
            case XML_ERROR_INVALID_GT_AFFT_2_RSQB_IN_CONTENT: 
		return HXR_XML_INVALID_GT_AFFT_2_RSQB_IN_CONTENT;
            case XML_ERROR_INVALID_COMMENT: