SAXParser.hpp

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Id: SAXParser.hpp 932887 2010-04-11 13:04:59Z borisk $
 */

#if !defined(XERCESC_INCLUDE_GUARD_SAXPARSER_HPP)
#define XERCESC_INCLUDE_GUARD_SAXPARSER_HPP

#include <xercesc/sax/Parser.hpp>
#include <xercesc/internal/VecAttrListImpl.hpp>
#include <xercesc/framework/XMLDocumentHandler.hpp>
#include <xercesc/framework/XMLElementDecl.hpp>
#include <xercesc/framework/XMLEntityHandler.hpp>
#include <xercesc/framework/XMLErrorReporter.hpp>
#include <xercesc/framework/XMLBuffer.hpp>
#include <xercesc/util/SecurityManager.hpp>
#include <xercesc/validators/common/Grammar.hpp>
#include <xercesc/validators/DTD/DocTypeHandler.hpp>


XERCES_CPP_NAMESPACE_BEGIN


class DocumentHandler;
class EntityResolver;
class XMLPScanToken;
class XMLScanner;
class XMLValidator;
class GrammarResolver;
class XMLGrammarPool;
class XMLEntityResolver;
class XMLResourceIdentifier;
class PSVIHandler;

class PARSERS_EXPORT SAXParser :

    public XMemory
    , public Parser
    , public XMLDocumentHandler
    , public XMLErrorReporter
    , public XMLEntityHandler
    , public DocTypeHandler
{
public :
    // -----------------------------------------------------------------------
    //  Class types
    // -----------------------------------------------------------------------
    enum ValSchemes
    {
        Val_Never
        , Val_Always
        , Val_Auto
    };


    // -----------------------------------------------------------------------
    //  Constructors and Destructor
    // -----------------------------------------------------------------------
    SAXParser
    (
          XMLValidator*   const valToAdopt = 0
        , MemoryManager*  const manager = XMLPlatformUtils::fgMemoryManager
        , XMLGrammarPool* const gramPool = 0
    );

    ~SAXParser();


    // -----------------------------------------------------------------------
    //  Getter Methods
    // -----------------------------------------------------------------------
    DocumentHandler* getDocumentHandler();

    const DocumentHandler* getDocumentHandler() const;

    EntityResolver* getEntityResolver();

    const EntityResolver* getEntityResolver() const;

    XMLEntityResolver* getXMLEntityResolver();

    const XMLEntityResolver* getXMLEntityResolver() const;

    ErrorHandler* getErrorHandler();

    const ErrorHandler* getErrorHandler() const;

    PSVIHandler* getPSVIHandler();

    const PSVIHandler* getPSVIHandler() const;

    const XMLValidator& getValidator() const;

    ValSchemes getValidationScheme() const;

    bool getDoSchema() const;

    bool getValidationSchemaFullChecking() const;

    bool getIdentityConstraintChecking() const;

    int getErrorCount() const;

    bool getDoNamespaces() const;

    bool getExitOnFirstFatalError() const;

    bool getValidationConstraintFatal() const;

    XMLCh* getExternalSchemaLocation() const;

    XMLCh* getExternalNoNamespaceSchemaLocation() const;

    SecurityManager* getSecurityManager() const;

    XMLSize_t getLowWaterMark() const;

    bool getLoadExternalDTD() const;

    bool getLoadSchema() const;

    bool isCachingGrammarFromParse() const;

    bool isUsingCachedGrammarInParse() const;

    bool getCalculateSrcOfs() const;

    bool getStandardUriConformant() const;

    Grammar* getGrammar(const XMLCh* const nameSpaceKey);

    Grammar* getRootGrammar();

    const XMLCh* getURIText(unsigned int uriId) const;

    XMLFilePos getSrcOffset() const;

    bool getGenerateSyntheticAnnotations() const;

    bool getValidateAnnotations() const;

    bool getIgnoreCachedDTD() const;

    bool getIgnoreAnnotations() const;

    bool getDisableDefaultEntityResolution() const;

    bool getSkipDTDValidation() const;

    bool getHandleMultipleImports() const;


    // -----------------------------------------------------------------------
    //  Setter methods
    // -----------------------------------------------------------------------

    void setGenerateSyntheticAnnotations(const bool newValue);

    void setValidateAnnotations(const bool newValue);

    void setDoNamespaces(const bool newState);

    void setValidationScheme(const ValSchemes newScheme);

    void setDoSchema(const bool newState);

    void setValidationSchemaFullChecking(const bool schemaFullChecking);

    void setIdentityConstraintChecking(const bool identityConstraintChecking);

    void setExitOnFirstFatalError(const bool newState);

    void setValidationConstraintFatal(const bool newState);

    void setExternalSchemaLocation(const XMLCh* const schemaLocation);

    void setExternalSchemaLocation(const char* const schemaLocation);

    void setExternalNoNamespaceSchemaLocation(const XMLCh* const noNamespaceSchemaLocation);

    void setExternalNoNamespaceSchemaLocation(const char* const noNamespaceSchemaLocation);

    void setSecurityManager(SecurityManager* const securityManager);

    void setLowWaterMark(XMLSize_t lwm);

    void setLoadExternalDTD(const bool newState);

    void setLoadSchema(const bool newState);

    void cacheGrammarFromParse(const bool newState);

    void useCachedGrammarInParse(const bool newState);

    void setCalculateSrcOfs(const bool newState);

    void setStandardUriConformant(const bool newState);

    void useScanner(const XMLCh* const scannerName);

    void setInputBufferSize(const XMLSize_t bufferSize);

    void setIgnoreCachedDTD(const bool newValue);

    void setIgnoreAnnotations(const bool newValue);

    void setDisableDefaultEntityResolution(const bool newValue);

    void setSkipDTDValidation(const bool newValue);

    void setHandleMultipleImports(const bool newValue);


    // -----------------------------------------------------------------------
    //  Advanced document handler list maintenance methods
    // -----------------------------------------------------------------------

    void installAdvDocHandler(XMLDocumentHandler* const toInstall);

    bool removeAdvDocHandler(XMLDocumentHandler* const toRemove);


    // -----------------------------------------------------------------------
    //  Progressive scan methods
    // -----------------------------------------------------------------------


    bool parseFirst
    (
        const   XMLCh* const    systemId
        ,       XMLPScanToken&  toFill
    );

    bool parseFirst
    (
        const   char* const     systemId
        ,       XMLPScanToken&  toFill
    );

    bool parseFirst
    (
        const   InputSource&    source
        ,       XMLPScanToken&  toFill
    );

    bool parseNext(XMLPScanToken& token);

    void parseReset(XMLPScanToken& token);


    // -----------------------------------------------------------------------
    //  Grammar preparsing interface
    // -----------------------------------------------------------------------

    Grammar* loadGrammar(const InputSource& source,
                         const Grammar::GrammarType grammarType,
                         const bool toCache = false);

    Grammar* loadGrammar(const XMLCh* const systemId,
                         const Grammar::GrammarType grammarType,
                         const bool toCache = false);

    Grammar* loadGrammar(const char* const systemId,
                         const Grammar::GrammarType grammarType,
                         const bool toCache = false);

    void resetCachedGrammarPool();



    // -----------------------------------------------------------------------
    //  Implementation of the SAX Parser interface
    // -----------------------------------------------------------------------

    virtual void parse(const InputSource& source);

    virtual void parse(const XMLCh* const systemId);

    virtual void parse(const char* const systemId);

    virtual void setDocumentHandler(DocumentHandler* const handler);

    virtual void setDTDHandler(DTDHandler* const handler);

    virtual void setErrorHandler(ErrorHandler* const handler);

    virtual void setPSVIHandler(PSVIHandler* const handler);

    virtual void setEntityResolver(EntityResolver* const resolver);

    virtual void setXMLEntityResolver(XMLEntityResolver* const resolver);



    // -----------------------------------------------------------------------
    //  Implementation of the XMLDocumentHandler interface
    // -----------------------------------------------------------------------

    virtual void docCharacters
    (
        const   XMLCh* const    chars
        , const XMLSize_t       length
        , const bool            cdataSection
    );

    virtual void docComment
    (
        const   XMLCh* const    comment
    );

    virtual void docPI
    (
        const   XMLCh* const    target
        , const XMLCh* const    data
    );

    virtual void endDocument();

    virtual void endElement
    (
        const   XMLElementDecl& elemDecl
        , const unsigned int    urlId
        , const bool            isRoot
        , const XMLCh* const    elemPrefix
    );

    virtual void endEntityReference
    (
        const   XMLEntityDecl&  entDecl
    );

    virtual void ignorableWhitespace
    (
        const   XMLCh* const    chars
        , const XMLSize_t       length
        , const bool            cdataSection
    );

    virtual void resetDocument();

    virtual void startDocument();

    virtual void startElement
    (
        const   XMLElementDecl&         elemDecl
        , const unsigned int            urlId
        , const XMLCh* const            elemPrefix
        , const RefVectorOf<XMLAttr>&   attrList
        , const XMLSize_t               attrCount
        , const bool                    isEmpty
        , const bool                    isRoot
    );

    virtual void startEntityReference
    (
        const   XMLEntityDecl&  entDecl
    );

    virtual void XMLDecl
    (
        const   XMLCh* const    versionStr
        , const XMLCh* const    encodingStr
        , const XMLCh* const    standaloneStr
        , const XMLCh* const    actualEncodingStr
    );


    // -----------------------------------------------------------------------
    //  Implementation of the XMLErrorReporter interface
    // -----------------------------------------------------------------------

    virtual void error
    (
        const   unsigned int                errCode
        , const XMLCh* const                msgDomain
        , const XMLErrorReporter::ErrTypes  errType
        , const XMLCh* const                errorText
        , const XMLCh* const                systemId
        , const XMLCh* const                publicId
        , const XMLFileLoc                  lineNum
        , const XMLFileLoc                  colNum
    );

    virtual void resetErrors();


    // -----------------------------------------------------------------------
    //  Implementation of the XMLEntityHandler interface
    // -----------------------------------------------------------------------

    virtual void endInputSource(const InputSource& inputSource);

    virtual bool expandSystemId
    (
        const   XMLCh* const    systemId
        ,       XMLBuffer&      toFill
    );

    virtual void resetEntities();

    virtual InputSource* resolveEntity
    (
        XMLResourceIdentifier* resourceIdentifier
    );

    virtual void startInputSource(const InputSource& inputSource);


    // -----------------------------------------------------------------------
    //  Implementation of the Deprecated DocTypeHandler Interface
    // -----------------------------------------------------------------------
    virtual void attDef
    (
        const   DTDElementDecl& elemDecl
        , const DTDAttDef&      attDef
        , const bool            ignore
    );

    virtual void doctypeComment
    (
        const   XMLCh* const    comment
    );

    virtual void doctypeDecl
    (
        const   DTDElementDecl& elemDecl
        , const XMLCh* const    publicId
        , const XMLCh* const    systemId
        , const bool            hasIntSubset
        , const bool            hasExtSubset = false
    );

    virtual void doctypePI
    (
        const   XMLCh* const    target
        , const XMLCh* const    data
    );

    virtual void doctypeWhitespace
    (
        const   XMLCh* const    chars
        , const XMLSize_t       length
    );

    virtual void elementDecl
    (
        const   DTDElementDecl& decl
        , const bool            isIgnored
    );

    virtual void endAttList
    (
        const   DTDElementDecl& elemDecl
    );

    virtual void endIntSubset();

    virtual void endExtSubset();

    virtual void entityDecl
    (
        const   DTDEntityDecl&  entityDecl
        , const bool            isPEDecl
        , const bool            isIgnored
    );

    virtual void resetDocType();

    virtual void notationDecl
    (
        const   XMLNotationDecl&    notDecl
        , const bool                isIgnored
    );

    virtual void startAttList
    (
        const   DTDElementDecl& elemDecl
    );

    virtual void startIntSubset();

    virtual void startExtSubset();

    virtual void TextDecl
    (
        const   XMLCh* const    versionStr
        , const XMLCh* const    encodingStr
    );

protected :
    // -----------------------------------------------------------------------
    //  Protected Methods
    // -----------------------------------------------------------------------
    const XMLScanner& getScanner() const;

    GrammarResolver* getGrammarResolver() const;


private:
    // -----------------------------------------------------------------------
    //  Unimplemented constructors and operators
    // -----------------------------------------------------------------------
    SAXParser(const SAXParser&);
    SAXParser& operator=(const SAXParser&);

    // -----------------------------------------------------------------------
    //  Initialize/Cleanup methods
    // -----------------------------------------------------------------------
    void initialize();
    void cleanUp();
    void resetInProgress();

    // -----------------------------------------------------------------------
    //  Private data members
    //
    //  fAttrList
    //      A temporary implementation of the basic SAX attribute list
    //      interface. We use this one over and over on each startElement
    //      event to allow SAX-like access to the element attributes.
    //
    //  fDocHandler
    //      The installed SAX doc handler, if any. Null if none.
    //
    //  fDTDHandler
    //      The installed SAX DTD handler, if any. Null if none.
    //
    //  fElemDepth
    //      This is used to track the element nesting depth, so that we can
    //      know when we are inside content. This is so we can ignore char
    //      data outside of content.
    //
    //  fEntityResolver
    //      The installed SAX entity handler, if any. Null if none.
    //
    //  fErrorHandler
    //      The installed SAX error handler, if any. Null if none.
    //
    //  fPSVIHandler
    //      The installed PSVI handler, if any. Null if none.
    //
    //  fAdvDHCount
    //  fAdvDHList
    //  fAdvDHListSize
    //      This is an array of pointers to XMLDocumentHandlers, which is
    //      how we see installed advanced document handlers. There will
    //      usually not be very many at all, so a simple array is used
    //      instead of a collection, for performance. It will grow if needed,
    //      but that is unlikely.
    //
    //      The count is how many handlers are currently installed. The size
    //      is how big the array itself is (for expansion purposes.) When
    //      count == size, is time to expand.
    //
    //  fParseInProgress
    //      This flag is set once a parse starts. It is used to prevent
    //      multiple entrance or reentrance of the parser.
    //
    //  fScanner
    //      The scanner being used by this parser. It is created internally
    //      during construction.
    //
    //   fGrammarPool
    //      The grammar pool passed from external application (through derivatives).
    //      which could be 0, not owned.
    //
    // -----------------------------------------------------------------------
    bool                 fParseInProgress;
    XMLSize_t            fElemDepth;
    XMLSize_t            fAdvDHCount;
    XMLSize_t            fAdvDHListSize;
    VecAttrListImpl      fAttrList;
    DocumentHandler*     fDocHandler;
    DTDHandler*          fDTDHandler;
    EntityResolver*      fEntityResolver;
    XMLEntityResolver*   fXMLEntityResolver;
    ErrorHandler*        fErrorHandler;
    PSVIHandler*         fPSVIHandler;
    XMLDocumentHandler** fAdvDHList;
    XMLScanner*          fScanner;
    GrammarResolver*     fGrammarResolver;
    XMLStringPool*       fURIStringPool;
    XMLValidator*        fValidator;
    MemoryManager*       fMemoryManager;
    XMLGrammarPool*      fGrammarPool;
    XMLBuffer            fElemQNameBuf;
};


// ---------------------------------------------------------------------------
//  SAXParser: Getter methods
// ---------------------------------------------------------------------------
inline DocumentHandler* SAXParser::getDocumentHandler()
{
    return fDocHandler;
}

inline const DocumentHandler* SAXParser::getDocumentHandler() const
{
    return fDocHandler;
}

inline EntityResolver* SAXParser::getEntityResolver()
{
    return fEntityResolver;
}

inline XMLEntityResolver* SAXParser::getXMLEntityResolver()
{
    return fXMLEntityResolver;
}

inline const XMLEntityResolver* SAXParser::getXMLEntityResolver() const
{
    return fXMLEntityResolver;
}

inline const EntityResolver* SAXParser::getEntityResolver() const
{
    return fEntityResolver;
}

inline ErrorHandler* SAXParser::getErrorHandler()
{
    return fErrorHandler;
}

inline const ErrorHandler* SAXParser::getErrorHandler() const
{
    return fErrorHandler;
}

inline PSVIHandler* SAXParser::getPSVIHandler()
{
    return fPSVIHandler;
}

inline const PSVIHandler* SAXParser::getPSVIHandler() const
{
    return fPSVIHandler;
}

inline const XMLScanner& SAXParser::getScanner() const
{
    return *fScanner;
}

inline GrammarResolver* SAXParser::getGrammarResolver() const
{
    return fGrammarResolver;
}

XERCES_CPP_NAMESPACE_END

#endif

---