---

IDOMParser.hpp

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache\@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * 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) 2001, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/*
 * $Id: IDOMParser.hpp,v 1.1 2002/05/11 20:21:07 bhavani Exp $
 *
 */

#if !defined(IDOMPARSER_HPP)
#define IDOMPARSER_HPP


#include <xercesc/idom/IDOM_Document.hpp>
#include <xercesc/framework/XMLDocumentHandler.hpp>
#include <xercesc/framework/XMLErrorReporter.hpp>
#include <xercesc/framework/XMLEntityHandler.hpp>
#include <xercesc/util/ValueStackOf.hpp>

#include <xercesc/validators/DTD/DocTypeHandler.hpp>
#include <xercesc/idom/IDOM_DocumentType.hpp>
#include <xercesc/validators/DTD/DTDElementDecl.hpp>

class EntityResolver;
class ErrorHandler;
class XMLPScanToken;
class XMLScanner;
class XMLValidator;
class IDDocumentImpl;
class IDDocumentTypeImpl;


class PARSERS_EXPORT IDOMParser :

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


    // -----------------------------------------------------------------------
    //  Constructors and Detructor
    // -----------------------------------------------------------------------

    IDOMParser(XMLValidator* const valToAdopt = 0);

    ~IDOMParser();


    void reset();

    void resetDocumentPool();


    // -----------------------------------------------------------------------
    //  Getter methods
    // -----------------------------------------------------------------------


    IDOM_Document* getDocument();

    ErrorHandler* getErrorHandler();

    const ErrorHandler* getErrorHandler() const;

    EntityResolver* getEntityResolver();

    const EntityResolver* getEntityResolver() const;

    const XMLValidator& getValidator() const;

    ValSchemes getValidationScheme() const;

    bool getDoSchema() const;

    bool getValidationSchemaFullChecking() const;

    int getErrorCount() const;

    bool getDoNamespaces() const;

    bool getExitOnFirstFatalError() const;

    bool getValidationConstraintFatal() const;

    bool getExpandEntityReferences() const;

    bool  getCreateEntityReferenceNodes()const;

    bool getIncludeIgnorableWhitespace() const;

    XMLCh* getExternalSchemaLocation() const;

    XMLCh* getExternalNoNamespaceSchemaLocation() const;

    bool getURLEntityCaching() const;

    XMLCh* getURLEntityCacheDir() const;



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


    void setErrorHandler(ErrorHandler* const handler);

    void setEntityResolver(EntityResolver* const handler);

    void setDoNamespaces(const bool newState);

    void setExitOnFirstFatalError(const bool newState);

    void setValidationConstraintFatal(const bool newState);

    void setExpandEntityReferences(const bool expand);

    void setCreateEntityReferenceNodes(const bool create);

    void setIncludeIgnorableWhitespace(const bool include);

    void setValidationScheme(const ValSchemes newScheme);

    void setDoSchema(const bool newState);

    void setValidationSchemaFullChecking(const bool schemaFullChecking);

    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 setURLEntityCaching(const bool useCache);

    void setURLEntityCacheDir(const XMLCh* cachedir);

    void setURLEntityCacheDir(const char* cachedir);



    // -----------------------------------------------------------------------
    //  Parsing methods
    // -----------------------------------------------------------------------


    void parse(const InputSource& source, const bool reuseGrammar = false);

    void parse(const XMLCh* const systemId, const bool reuseGrammar = false);

    void parse(const char* const systemId, const bool reuseGrammar = false);

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

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

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

    bool parseNext(XMLPScanToken& token);

    void parseReset(XMLPScanToken& token);




    // -----------------------------------------------------------------------
    //  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 unsigned int                lineNum
        , const unsigned int                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
    (
        const   XMLCh* const    publicId
        , const XMLCh* const    systemId
    );

    virtual void startInputSource(const InputSource& inputSource);




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


    virtual void docCharacters
    (
        const   XMLCh* const    chars
        , const unsigned int    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
    );

    virtual void endEntityReference
    (
        const   XMLEntityDecl&  entDecl
    );

    virtual void ignorableWhitespace
    (
        const   XMLCh* const    chars
        , const unsigned int    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 unsigned int            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    actualEncStr
    );


    bool getDoValidation() const;

    void setDoValidation(const bool newState);

        virtual void attDef
    (
        const   DTDElementDecl&     elemDecl
        , const DTDAttDef&          attDef
        , const bool                ignoring
    );

    virtual void doctypeComment
    (
        const   XMLCh* const    comment
    );

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

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

    virtual void doctypeWhitespace
    (
        const   XMLCh* const    chars
        , const unsigned int    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 getter methods
    // -----------------------------------------------------------------------

    IDOM_Node* getCurrentNode();



    // -----------------------------------------------------------------------
    //  Protected setter methods
    // -----------------------------------------------------------------------


    void setCurrentNode(IDOM_Node* toSet);

    void setDocument(IDOM_Document* toSet);


private :
    // -----------------------------------------------------------------------
    //  Private data members
    //
    //  fCurrentNode
    //  fCurrentParent
    //      Used to track the current node during nested element events. Since
    //      the tree must be built from a set of disjoint callbacks, we need
    //      these to keep up with where we currently are.
    //
    //  fDocument
    //      The root document object, filled with the document contents.
    //
    //  fEntityResolver
    //      The installed SAX entity resolver, if any. Null if none.
    //
    //  fErrorHandler
    //      The installed SAX error handler, if any. Null if none.
    //
    //  fCreateEntityReferenceNode
    //      Indicates whether entity reference nodes should be created.
    //
    //  fIncludeIgnorableWhitespace
    //      Indicates whether ignorable whiltespace should be added to
    //      the IDOM tree for validating parsers.
    //
    //  fNodeStack
    //      Used to track previous parent nodes during nested element events.
    //
    //  fParseInProgress
    //      Used to prevent multiple entrance to the parser while its doing
    //      a parse.
    //
    //  fScanner
    //      The scanner used for this parser. This is created during the
    //      constructor.
    //
    //  fWithinElement
    //      A flag to indicate that the parser is within at least one level
    //      of element processing.
    //
    //  fDocumentType
    //      Used to store and update the documentType variable information
    //      in fDocument
    //
    //  fDocumentVector
    //      Store all the previous fDocument(s) (thus not the current fDocument)
    //      created in this parser.  It is destroyed when the parser is destructed.
    // -----------------------------------------------------------------------
    IDOM_Node*               fCurrentParent;
    IDOM_Node*               fCurrentNode;
    IDDocumentImpl*          fDocument;
    EntityResolver*          fEntityResolver;
    ErrorHandler*            fErrorHandler;
    bool                     fCreateEntityReferenceNodes;
    bool                     fIncludeIgnorableWhitespace;
    ValueStackOf<IDOM_Node*>* fNodeStack;
    bool                     fParseInProgress;
    XMLScanner*              fScanner;
    bool                     fWithinElement;
    IDDocumentTypeImpl*      fDocumentType;
    RefVectorOf<IDDocumentImpl>* fDocumentVector;
};



// ---------------------------------------------------------------------------
//  IDOMParser: Handlers for the XMLEntityHandler interface
// ---------------------------------------------------------------------------
inline void IDOMParser::endInputSource(const InputSource&)
{
    // The IDOM entity resolver doesn't handle this
}

inline bool IDOMParser::expandSystemId(const XMLCh* const, XMLBuffer&)
{
    // The IDOM entity resolver doesn't handle this
    return false;
}

inline void IDOMParser::resetEntities()
{
    // Nothing to do on this one
}

inline void IDOMParser::startInputSource(const InputSource&)
{
    // The IDOM entity resolver doesn't handle this
}


// ---------------------------------------------------------------------------
//  IDOMParser: Getter methods
// ---------------------------------------------------------------------------
inline ErrorHandler* IDOMParser::getErrorHandler()
{
    return fErrorHandler;
}

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

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

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

inline bool IDOMParser::getExpandEntityReferences() const
{
    return fCreateEntityReferenceNodes;
}
inline bool IDOMParser::getCreateEntityReferenceNodes() const
{
    return fCreateEntityReferenceNodes;
}

inline bool IDOMParser::getIncludeIgnorableWhitespace() const
{
    return fIncludeIgnorableWhitespace;
}


// ---------------------------------------------------------------------------
//  IDOMParser: Setter methods
// ---------------------------------------------------------------------------
inline void IDOMParser::setExpandEntityReferences(const bool expand)
{
    fCreateEntityReferenceNodes = expand;
}

inline void IDOMParser::setCreateEntityReferenceNodes(const bool create)
{
    fCreateEntityReferenceNodes = create;
}

inline void IDOMParser::setIncludeIgnorableWhitespace(const bool include)
{
    fIncludeIgnorableWhitespace = include;
}


// ---------------------------------------------------------------------------
//  IDOMParser: Protected getter methods
// ---------------------------------------------------------------------------
inline IDOM_Node* IDOMParser::getCurrentNode()
{
    return fCurrentNode;
}


// ---------------------------------------------------------------------------
//  IDOMParser: Protected setter methods
// ---------------------------------------------------------------------------
inline void IDOMParser::setCurrentNode(IDOM_Node* toSet)
{
    fCurrentNode = toSet;
}

inline void IDOMParser::setDocument(IDOM_Document* toSet)
{
    fDocument = (IDDocumentImpl *)toSet;
}

#endif

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