saxparser.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 1,546 行 · 第 1/3 页

        fAdvDHList[index]->endElement(elemDecl, uriId, isRoot, elemPrefix);

    //
    //  Dump the element depth down again. Don't let it underflow in case
    //  of malformed XML.
    //
    if (fElemDepth)
        fElemDepth--;
}


void SAXParser::endEntityReference(const XMLEntityDecl& entityDecl)
{
    //
    //  SAX has no way to report this event. But, if there are any installed
    //  advanced handlers, then lets call them with this info.
    //
    for (unsigned int index = 0; index < fAdvDHCount; index++)
        fAdvDHList[index]->endEntityReference(entityDecl);
}


void SAXParser::ignorableWhitespace(const   XMLCh* const    chars
                                    , const unsigned int    length
                                    , const bool            cdataSection)
{
    // Do not report the whitespace before the root element.
    if (!fElemDepth)
        return;

    // Just map to the SAX document handler
    if (fDocHandler)
        fDocHandler->ignorableWhitespace(chars, length);

    //
    //  If there are any installed advanced handlers, then lets call them
    //  with this info.
    //
    for (unsigned int index = 0; index < fAdvDHCount; index++)
        fAdvDHList[index]->ignorableWhitespace(chars, length, cdataSection);
}


void SAXParser::resetDocument()
{
    // Just map to the SAX document handler
    if (fDocHandler)
        fDocHandler->resetDocument();

    //
    //  If there are any installed advanced handlers, then lets call them
    //  with this info.
    //
    for (unsigned int index = 0; index < fAdvDHCount; index++)
        fAdvDHList[index]->resetDocument();

    // Make sure our element depth flag gets set back to zero
    fElemDepth = 0;
}


void SAXParser::startDocument()
{
    // Just map to the SAX document handler
    if (fDocHandler)
    {
        fDocHandler->setDocumentLocator(fScanner->getLocator());
        fDocHandler->startDocument();
    }

    //
    //  If there are any installed advanced handlers, then lets call them
    //  with this info.
    //
    for (unsigned int index = 0; index < fAdvDHCount; index++)
        fAdvDHList[index]->startDocument();
}


void SAXParser::
startElement(   const   XMLElementDecl&         elemDecl
                , const unsigned int            elemURLId
                , const XMLCh* const            elemPrefix
                , const RefVectorOf<XMLAttr>&   attrList
                , const unsigned int            attrCount
                , const bool                    isEmpty
                , const bool                    isRoot)
{
    // Bump the element depth counter if not empty
    if (!isEmpty)
        fElemDepth++;

    if (fDocHandler)
    {
        fAttrList.setVector(&attrList, attrCount);
        if (fScanner->getDoNamespaces()) {

            if (elemPrefix && *elemPrefix) {

                fElemQNameBuf.set(elemPrefix);
                fElemQNameBuf.append(chColon);
                fElemQNameBuf.append(elemDecl.getBaseName());
                fDocHandler->startElement(fElemQNameBuf.getRawBuffer(), fAttrList);

                // If its empty, send the end tag event now
                if (isEmpty)
                    fDocHandler->endElement(fElemQNameBuf.getRawBuffer());
            }
            else {

                fDocHandler->startElement(elemDecl.getBaseName(), fAttrList);

                // If its empty, send the end tag event now
                if (isEmpty)
                    fDocHandler->endElement(elemDecl.getBaseName());
            }
        }
        else {
            fDocHandler->startElement(elemDecl.getFullName(), fAttrList);

            // If its empty, send the end tag event now
            if (isEmpty)
                fDocHandler->endElement(elemDecl.getFullName());
        }
    }

    //
    //  If there are any installed advanced handlers, then lets call them
    //  with this info.
    //
    for (unsigned int index = 0; index < fAdvDHCount; index++)
    {
        fAdvDHList[index]->startElement
        (
            elemDecl
            , elemURLId
            , elemPrefix
            , attrList
            , attrCount
            , isEmpty
            , isRoot
        );
    }
}


void SAXParser::startEntityReference(const XMLEntityDecl& entityDecl)
{
    //
    //  SAX has no way to report this. But, If there are any installed
    //  advanced handlers, then lets call them with this info.
    //
    for (unsigned int index = 0; index < fAdvDHCount; index++)
        fAdvDHList[index]->startEntityReference(entityDecl);
}



// ---------------------------------------------------------------------------
//  SAXParser: Overrides of the DocTypeHandler interface
// ---------------------------------------------------------------------------
void SAXParser::attDef( const   DTDElementDecl&
                        , const DTDAttDef&
                        , const bool)
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::doctypeComment(const XMLCh* const)
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::doctypeDecl(const   DTDElementDecl&
                            , const XMLCh* const
                            , const XMLCh* const
                            , const bool
                            , const bool)
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::doctypePI(  const   XMLCh* const
                            , const XMLCh* const)
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::doctypeWhitespace(  const   XMLCh* const
                                    , const unsigned int)
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::elementDecl(const DTDElementDecl&, const bool)
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::endAttList(const DTDElementDecl&)
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::endIntSubset()
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::endExtSubset()
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::entityDecl( const   DTDEntityDecl&  entityDecl
                            , const bool
                            , const bool            isIgnored)
{
    //
    //  If we have a DTD handler, and this entity is not ignored, and
    //  its an unparsed entity, then send this one.
    //
    if (fDTDHandler && !isIgnored)
    {
        if (entityDecl.isUnparsed())
        {
            fDTDHandler->unparsedEntityDecl
            (
                entityDecl.getName()
                , entityDecl.getPublicId()
                , entityDecl.getSystemId()
                , entityDecl.getNotationName()
            );
        }
    }
}


void SAXParser::resetDocType()
{
    // Just map to the DTD handler
    if (fDTDHandler)
        fDTDHandler->resetDocType();
}


void SAXParser::notationDecl(   const   XMLNotationDecl&    notDecl
                                , const bool                isIgnored)
{
    if (fDTDHandler && !isIgnored)
    {
        fDTDHandler->notationDecl
        (
            notDecl.getName()
            , notDecl.getPublicId()
            , notDecl.getSystemId()
        );
    }
}


void SAXParser::startAttList(const DTDElementDecl&)
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::startIntSubset()
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::startExtSubset()
{
    // Unused by SAX DTDHandler interface at this time
}


void SAXParser::TextDecl(   const  XMLCh* const
                            , const XMLCh* const)
{
    // Unused by SAX DTDHandler interface at this time
}


// ---------------------------------------------------------------------------
//  SAXParser: Overrides of the XMLErrorReporter interface
// ---------------------------------------------------------------------------
void SAXParser::resetErrors()
{
    if (fErrorHandler)
        fErrorHandler->resetErrors();
}


void SAXParser::error(  const   unsigned int
                        , const XMLCh* const
                        , const XMLErrorReporter::ErrTypes  errType
                        , const XMLCh* const                errorText
                        , const XMLCh* const                systemId
                        , const XMLCh* const                publicId
                        , const XMLSSize_t                  lineNum
                        , const XMLSSize_t                  colNum)
{
    SAXParseException toThrow = SAXParseException
    (
        errorText
        , publicId
        , systemId
        , lineNum
        , colNum
        , fMemoryManager
    );

    if (!fErrorHandler)
    {
        if (errType == XMLErrorReporter::ErrType_Fatal)
            throw toThrow;
        else
            return;
    }

    if (errType == XMLErrorReporter::ErrType_Warning)
        fErrorHandler->warning(toThrow);
    else if (errType == XMLErrorReporter::ErrType_Fatal)
        fErrorHandler->fatalError(toThrow);
    else
        fErrorHandler->error(toThrow);
}



// ---------------------------------------------------------------------------
//  SAXParser: Handlers for the XMLEntityHandler interface
// ---------------------------------------------------------------------------
void SAXParser::endInputSource(const InputSource&)
{
}

bool SAXParser::expandSystemId(const XMLCh* const, XMLBuffer&)
{
    return false;
}


void SAXParser::resetEntities()
{
    // Nothing to do for this one
}


InputSource*
SAXParser::resolveEntity(   const   XMLCh* const    publicId
                            , const XMLCh* const    systemId
                            , const XMLCh* const)
{
    // Just map to the SAX entity resolver handler
    if (fEntityResolver)
        return fEntityResolver->resolveEntity(publicId, systemId);
    return 0;
}


InputSource*
SAXParser::resolveEntity(  XMLResourceIdentifier* resourceIdentifier )
{
    // Just map to the SAX entity resolver handler
    if (fEntityResolver)
        return fEntityResolver->resolveEntity(resourceIdentifier->getPublicId(), 
                                                resourceIdentifier->getSystemId());
    if (fXMLEntityResolver)
        return fXMLEntityResolver->resolveEntity(resourceIdentifier);
    return 0;
}


void SAXParser::startInputSource(const InputSource&)
{
    // Nothing to do for this one
}



// ---------------------------------------------------------------------------
//  SAXParser: Deprecated methods
// ---------------------------------------------------------------------------
bool SAXParser::getDoValidation() const
{
    //
    //  We don't want to tie the public parser classes to the enum used
    //  by the scanner, so we use a separate one and map.
    //
    //  DON'T mix the new and old methods!!
    //
    const XMLScanner::ValSchemes scheme = fScanner->getValidationScheme();
    if (scheme == XMLScanner::Val_Always)
        return true;
    return false;
}

void SAXParser::setDoValidation(const bool newState)
{
    fScanner->setDoValidation
    (
        newState ? XMLScanner::Val_Always : XMLScanner::Val_Never
    );
}


// ---------------------------------------------------------------------------
//  SAXParser: Grammar preparsing methods
// ---------------------------------------------------------------------------
Grammar* SAXParser::loadGrammar(const char* const systemId,
                                const short grammarType,
                                const bool toCache)
{
    // Avoid multiple entrance
    if (fParseInProgress)
        ThrowXMLwithMemMgr(IOException, XMLExcepts::Gen_ParseInProgress, fMemoryManager);

    Grammar* grammar = 0;
    try
    {
        fParseInProgress = true;
        grammar = fScanner->loadGrammar(systemId, grammarType, toCache);
        fParseInProgress = false;
    }
    catch(const OutOfMemoryException&)
    {
        throw;
    }
    catch(...)
    {
        fParseInProgress = false;
        throw;
    }

    return grammar;
}

Grammar* SAXParser::loadGrammar(const XMLCh* const systemId,
                                const short grammarType,
                                const bool toCache)
{
    // Avoid multiple entrance
    if (fParseInProgress)
        ThrowXMLwithMemMgr(IOException, XMLExcepts::Gen_ParseInProgress, fMemoryManager);

    Grammar* grammar = 0;
    try
    {
        fParseInProgress = true;
        grammar = fScanner->loadGrammar(systemId, grammarType, toCache);
        fParseInProgress = false;
    }
    catch(const OutOfMemoryException&)
    {
        throw;
    }
    catch(...)
    {
        fParseInProgress = false;
        throw;
    }

    return grammar;
}

Grammar* SAXParser::loadGrammar(const InputSource& source,
                                const short grammarType,
                                const bool toCache)
{
    // Avoid multiple entrance
    if (fParseInProgress)
        ThrowXMLwithMemMgr(IOException, XMLExcepts::Gen_ParseInProgress, fMemoryManager);

    Grammar* grammar = 0;
    try
    {
        fParseInProgress = true;
        grammar = fScanner->loadGrammar(source, grammarType, toCache);
        fParseInProgress = false;
    }
    catch(const OutOfMemoryException&)
    {
        throw;
    }
    catch(...)
    {
        fParseInProgress = false;
        throw;
    }

    return grammar;
}

void SAXParser::resetCachedGrammarPool()
{
    fGrammarResolver->resetCachedGrammar();
}

XERCES_CPP_NAMESPACE_END