DGXMLScanner.cpp

/*
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 * reserved.
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 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation, and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
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/*
 * $Id$
 */


// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include <xercesc/internal/DGXMLScanner.hpp>
#include <xercesc/util/Janitor.hpp>
#include <xercesc/util/RuntimeException.hpp>
#include <xercesc/util/UnexpectedEOFException.hpp>
#include <xercesc/framework/URLInputSource.hpp>
#include <xercesc/framework/LocalFileInputSource.hpp>
#include <xercesc/framework/XMLDocumentHandler.hpp>
#include <xercesc/framework/XMLEntityHandler.hpp>
#include <xercesc/framework/XMLPScanToken.hpp>
#include <xercesc/framework/XMLGrammarPool.hpp>
#include <xercesc/framework/XMLDTDDescription.hpp>
#include <xercesc/internal/EndOfEntityException.hpp>
#include <xercesc/validators/common/GrammarResolver.hpp>
#include <xercesc/validators/DTD/DocTypeHandler.hpp>
#include <xercesc/validators/DTD/DTDScanner.hpp>
#include <xercesc/validators/DTD/DTDValidator.hpp>
#include <xercesc/util/OutOfMemoryException.hpp>
#include <xercesc/util/XMLResourceIdentifier.hpp>
#include <xercesc/util/HashPtr.hpp>

XERCES_CPP_NAMESPACE_BEGIN

// ---------------------------------------------------------------------------
//  DGXMLScanner: Constructors and Destructor
// ---------------------------------------------------------------------------
DGXMLScanner::DGXMLScanner(XMLValidator* const valToAdopt
                         , GrammarResolver* const grammarResolver
                         , MemoryManager* const manager) :

    XMLScanner(valToAdopt, grammarResolver, manager)
    , fAttrNSList(0)
    , fDTDValidator(0)
    , fDTDGrammar(0)
    , fDTDElemNonDeclPool(0)
    , fElemCount(0)
    , fAttDefRegistry(0)
    , fUndeclaredAttrRegistry(0)
{
    try
    {
        commonInit();

        if (valToAdopt)
        {
            if (!valToAdopt->handlesDTD())
               ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Gen_NoDTDValidator, fMemoryManager);
        }
        else
        {
            fValidator = fDTDValidator;
        }
    }
    catch(const OutOfMemoryException&)
    {
        throw;
    }
    catch(...)
    {
        cleanUp();
        throw;
    }
}

DGXMLScanner::DGXMLScanner( XMLDocumentHandler* const docHandler
                          , DocTypeHandler* const     docTypeHandler
                          , XMLEntityHandler* const   entityHandler
                          , XMLErrorReporter* const   errHandler
                          , XMLValidator* const       valToAdopt
                          , GrammarResolver* const    grammarResolver
                          , MemoryManager* const      manager) :

    XMLScanner(docHandler, docTypeHandler, entityHandler, errHandler, valToAdopt, grammarResolver, manager)
    , fAttrNSList(0)
    , fDTDValidator(0)
    , fDTDGrammar(0)
    , fDTDElemNonDeclPool(0)
    , fElemCount(0)
    , fAttDefRegistry(0)
    , fUndeclaredAttrRegistry(0)
{
    try
    {	
        commonInit();

        if (valToAdopt)
        {
            if (!valToAdopt->handlesDTD())
               ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Gen_NoDTDValidator, fMemoryManager);
        }
        else
        {
            fValidator = fDTDValidator;
        }
    }
    catch(const OutOfMemoryException&)
    {
        throw;
    }
    catch(...)
    {
        cleanUp();
        throw;
    }
}

DGXMLScanner::~DGXMLScanner()
{
    cleanUp();
}

// ---------------------------------------------------------------------------
//  XMLScanner: Getter methods
// ---------------------------------------------------------------------------
NameIdPool<DTDEntityDecl>* DGXMLScanner::getEntityDeclPool()
{
    if(!fGrammar)
        return 0;
    return ((DTDGrammar*)fGrammar)->getEntityDeclPool();
}

const NameIdPool<DTDEntityDecl>* DGXMLScanner::getEntityDeclPool() const
{
    if(!fGrammar)
        return 0;
    return ((DTDGrammar*)fGrammar)->getEntityDeclPool();
}

// ---------------------------------------------------------------------------
//  DGXMLScanner: Main entry point to scan a document
// ---------------------------------------------------------------------------
void DGXMLScanner::scanDocument(const InputSource& src)
{
    //  Bump up the sequence id for this parser instance. This will invalidate
    //  any previous progressive scan tokens.
    fSequenceId++;