/* * 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 * . */ /* * $Id: IDOMParser.hpp,v 1.2 2002/02/20 18:17:01 tng Exp $ * */ #if !defined(IDOMPARSER_HPP) #define IDOMPARSER_HPP #include #include #include #include #include #include #include #include class EntityResolver; class ErrorHandler; class XMLPScanToken; class XMLScanner; class XMLValidator; class IDDocumentImpl; class IDDocumentTypeImpl; /** * This class implements the Document Object Model (DOM) interface. * It should be used by applications which choose to parse and * process the XML document using the DOM api's. This implementation * also allows the applications to install an error and an entitty * handler (useful extensions to the DOM specification). * *

It can be used to instantiate a validating or non-validating * parser, by setting a member flag.

*/ 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 // ----------------------------------------------------------------------- /** @name Constructors and Destructor */ //@{ /** Construct a IDOMParser, with an optional validator * * Constructor with an instance of validator class to use for * validation. If you don't provide a validator, a default one will * be created for you in the scanner. * * @param valToAdopt Pointer to the validator instance to use. The * parser is responsible for freeing the memory. */ IDOMParser(XMLValidator* const valToAdopt = 0); /** * Destructor */ ~IDOMParser(); //@} /** Reset the parser * * This method resets the state of the IDOM driver and makes * it ready for a fresh parse run. */ void reset(); /** Reset the documents vector pool and release all the associated memory * back to the system. * * When parsing a document using an IDOMParser, all memory allocated * for a DOM tree is associated to the DOM document. * * If you do multiple parse using the same IDOMParser instance, then * multiple DOM documents will be generated and saved in a vector pool. * All these documents (and thus all the allocated memory) * won't be deleted until the parser instance is destroyed. * * If you don't need these DOM documents anymore and don't want to * destroy the IDOMParser instance at this moment, then you can call this method * to reset the document vector pool and release all the allocated memory * back to the system. * * It is an error to call this method if you are in the middle of a * parse (e.g. in the mid of a progressive parse). * * @exception IOException An exception from the parser if this function * is called when a parse is in progress. * */ void resetDocumentPool(); // ----------------------------------------------------------------------- // Getter methods // ----------------------------------------------------------------------- /** @name Getter methods */ //@{ /** Get the IDOM document * * This method returns the IDOM_Document object representing the * root of the document tree. This object provides the primary * access to the document's data. * * @return The IDOM_Document object which represents the entire * XML document. */ IDOM_Document* getDocument(); /** Get a pointer to the error handler * * This method returns the installed error handler. If no handler * has been installed, then it will be a zero pointer. * * @return The pointer to the installed error handler object. */ ErrorHandler* getErrorHandler(); /** Get a const pointer to the error handler * * This method returns the installed error handler. If no handler * has been installed, then it will be a zero pointer. * * @return A const pointer to the installed error handler object. */ const ErrorHandler* getErrorHandler() const; /** Get a pointer to the entity resolver * * This method returns the installed entity resolver. If no resolver * has been installed, then it will be a zero pointer. * * @return The pointer to the installed entity resolver object. */ EntityResolver* getEntityResolver(); /** Get a const pointer to the entity resolver * * This method returns the installed entity resolver. If no resolver * has been installed, then it will be a zero pointer. * * @return A const pointer to the installed entity resolver object. */ const EntityResolver* getEntityResolver() const; /** Get a const reference to the validator * * This method returns a reference to the parser's installed * validator. * * @return A const reference to the installed validator object. */ const XMLValidator& getValidator() const; /** * This method returns an enumerated value that indicates the current * validation scheme set on this parser. * * @return The ValSchemes value current set on this parser. * @see #setValidationScheme */ ValSchemes getValidationScheme() const; /** Get the 'do schema' flag * * This method returns the state of the parser's schema processing * flag. * * @return true, if the parser is currently configured to * understand schema, false otherwise. * * @see #setDoSchema */ bool getDoSchema() const; /** Get the 'full schema constraint checking' flag * * This method returns the state of the parser's full schema constraint * checking flag. * * @return true, if the parser is currently configured to * have full schema constraint checking, false otherwise. * * @see #setValidationSchemaFullChecking */ bool getValidationSchemaFullChecking() const; /** Get error count from the last parse operation. * * This method returns the error count from the last parse * operation. Note that this count is actually stored in the * scanner, so this method simply returns what the * scanner reports. * * @return number of errors encountered during the latest * parse operation. * */ int getErrorCount() const; /** Get the 'do namespaces' flag * * This method returns the state of the parser's namespace processing * flag. * * @return true, if the parser is currently configured to * understand namespaces, false otherwise. * * @see #setDoNamespaces */ bool getDoNamespaces() const; /** Get the 'exit on first error' flag * * This method returns the state of the parser's * exit-on-First-Fatal-Error flag. If this flag is true, then the * parse will exit the first time it sees any non-wellformed XML or * any validity error. The default state is true. * * @return true, if the parser is currently configured to * exit on the first fatal error, false otherwise. * * @see #setExitOnFirstFatalError */ bool getExitOnFirstFatalError() const; /** * This method returns the state of the parser's * validation-constraint-fatal flag. * * @return true, if the parser is currently configured to * set validation constraint errors as fatal, false * otherwise. * * @see #setValidationContraintFatal */ bool getValidationConstraintFatal() const; /** Get the 'expand entity references' flag. * DEPRECATED Use getCreateEntityReferenceNodes() instead. * * This method returns the state of the parser's expand entity * references flag. * * @return 'true' if the expand entity reference flag is set on * the parser, 'false' otherwise. * * @see #setExpandEntityReferences */ bool getExpandEntityReferences() const; /** Get the 'include entity references' flag * * This flag specifies whether the parser is * creating entity reference nodes in the DOM tree being produced. * When the 'create' flag is * true, the DOM tree will contain entity reference nodes. * When the 'create' flag is false, no entity reference nodes * are included in the DOM tree. *

The replacement text * of the entity is included in either case, either as a * child of the Entity Reference node or in place at the location * of the reference. * * @return The state of the create entity reference node * flag. * @see #setCreateEntityReferenceNodes */ bool getCreateEntityReferenceNodes()const; /** Get the 'include ignorable whitespace' flag. * * This method returns the state of the parser's include ignorable * whitespace flag. * * @return 'true' if the include ignorable whitespace flag is set on * the parser, 'false' otherwise. * * @see #setIncludeIgnorableWhitespace */ bool getIncludeIgnorableWhitespace() const; /** Get the set of Namespace/SchemaLocation that is specified externaly. * * This method returns the list of Namespace/SchemaLocation that was * specified using setExternalSchemaLocation. * * The parser owns the returned string, and the memory allocated for * the returned string will be destroyed when the parser is deleted. * * To ensure assessiblity of the returned information after the parser * is deleted, callers need to copy and store the returned information * somewhere else. * * @return a pointer to the list of Namespace/SchemaLocation that was * specified externally. The pointer spans the same life-time as * the parser. A null pointer is returned if nothing * was specified externally. * * @see #setExternalSchemaLocation(const XMLCh* const) */ XMLCh* getExternalSchemaLocation() const; /** Get the noNamespace SchemaLocation that is specified externaly. * * This method returns the no target namespace XML Schema Location * that was specified using setExternalNoNamespaceSchemaLocation. * * The parser owns the returned string, and the memory allocated for * the returned string will be destroyed when the parser is deleted. * * To ensure assessiblity of the returned information after the parser * is deleted, callers need to copy and store the returned information * somewhere else. * * @return a pointer to the no target namespace Schema Location that was * specified externally. The pointer spans the same life-time as * the parser. A null pointer is returned if nothing * was specified externally. * * @see #setExternalNoNamespaceSchemaLocation(const XMLCh* const) */ XMLCh* getExternalNoNamespaceSchemaLocation() const; //@} // ----------------------------------------------------------------------- // Setter methods // ----------------------------------------------------------------------- /** @name Setter methods */ //@{ /** Set the error handler * * This method allows applications to install their own error handler * to trap error and warning messages. * * Any previously set handler is merely dropped, since the parser * does not own them. * * @param handler A const pointer to the user supplied error * handler. * * @see #getErrorHandler */ void setErrorHandler(ErrorHandler* const handler); /** Set the entity resolver * * This method allows applications to install their own entity * resolver. By installing an entity resolver, the applications * can trap and potentially redirect references to external * entities. * * Any previously set resolver is merely dropped, since the parser * does not own them. * * @param handler A const pointer to the user supplied entity * resolver. * * @see #getEntityResolver */ void setEntityResolver(EntityResolver* const handler); /** Set the 'do namespaces' flag * * This method allows users to enable or disable the parser's * namespace processing. When set to true, parser starts enforcing * all the constraints and rules specified by the NameSpace * specification. * * The parser's default state is: false. * * This flag is ignored by the underlying scanner if the installed * validator indicates that namespace constraints should be * enforced. * * @param newState The value specifying whether NameSpace rules should * be enforced or not. * * @see #getDoNamespaces */ void setDoNamespaces(const bool newState); /** Set the 'exit on first error' flag * * This method allows users to set the parser's behaviour when it * encounters the first fatal error. If set to true, the parser * will exit at the first fatal error. If false, then it will * report the error and continue processing. * * The default value is 'true' and the parser exits on the * first fatal error. * * @param newState The value specifying whether the parser should * continue or exit when it encounters the first * fatal error. * * @see #getExitOnFirstFatalError */ void setExitOnFirstFatalError(const bool newState); /** * This method allows users to set the parser's behaviour when it * encounters a validtion constraint error. If set to true, and the * the parser is set to exit when it encounter the first fatal error, * the parser will exit at the first encounter. If false, then it will * report the error and continue processing. * *

The default value is 'false'.

* * @param newState The value specifying whether the parser should * continue or exit when it encounters a validation * constraint error. * * @see #getValidationConstraintFatal */ void setValidationConstraintFatal(const bool newState); /** Set the 'expand entity references' flag * * DEPRECATED. USE setCreateEntityReferenceNodes instead. * This method allows the user to specify whether the parser should * expand all entity reference nodes. When the 'do expansion' flag is * true, the DOM tree does not have any entity reference nodes. It is * replaced by the sub-tree representing the replacement text of the * entity. When the 'do expansion' flag is false, the DOM tree * contains an extra entity reference node, whose children is the * sub tree of the replacement text. * * @param expand The new state of the expand entity reference * flag. */ void setExpandEntityReferences(const bool expand); /** Set the 'include entity references' flag * * This method allows the user to specify whether the parser should * create entity reference nodes in the DOM tree being produced. * When the 'create' flag is * true, the DOM tree constains entity reference nodes. * When the 'create' flag is false, no entity reference nodes * are included in the DOM tree. *

The replacement text * of the entity is included in either case, either as a * child of the Entity Reference node or in place at the location * of the reference. * * @param create The new state of the create entity reference nodes * flag. */ void setCreateEntityReferenceNodes(const bool create); /** Set the 'include ignorable whitespace' flag * * This method allows the user to specify whether a validating parser * should include ignorable whitespaces as text nodes. It has no effect * on non-validating parsers which always include non-markup text. *

When set to true (also the default), ignorable whitespaces will be * added to the DOM tree as text nodes. The method * IDOM_Text::isIgnorableWhitespace() will return true for those text * nodes only. *

When set to false, all ignorable whitespace will be discarded and * no text node is added to the DOM tree. Note: applications intended * to process the "xml:space" attribute should not set this flag to false. * And this flag also overrides any schema datateye whitespace facets, * that is, all ignorable whitespace will be discarded even though * 'preserve' is set in schema datatype whitespace facets. * * @param include The new state of the include ignorable whitespace * flag. * * @see #getIncludeIgnorableWhitespace */ void setIncludeIgnorableWhitespace(const bool include); /** * This method allows users to set the validation scheme to be used * by this parser. The value is one of the ValSchemes enumerated values * defined by this class: * *
Val_Never - turn off validation *
Val_Always - turn on validation *
Val_Auto - turn on validation if any internal/external * DTD subset have been seen * *

The parser's default state is: Val_Auto.

* * @param newScheme The new validation scheme to use. * * @see #getValidationScheme */ void setValidationScheme(const ValSchemes newScheme); /** Set the 'do schema' flag * * This method allows users to enable or disable the parser's * schema processing. When set to false, parser will not process * any schema found. * * The parser's default state is: false. * * @param newState The value specifying whether schema support should * be enforced or not. * * @see #getDoSchema */ void setDoSchema(const bool newState); /** * This method allows the user to turn full Schema constraint checking on/off. * Only takes effect if Schema validation is enabled. * If turned off, partial constraint checking is done. * * Full schema constraint checking includes those checking that may * be time-consuming or memory intensive. Currently, particle unique * attribution constraint checking and particle derivation resriction checking * are controlled by this option. * * The parser's default state is: false. * * @param schemaFullChecking True to turn on full schema constraint checking. * * @see #getValidationSchemaFullChecking */ void setValidationSchemaFullChecking(const bool schemaFullChecking); /** * This method allows the user to specify a list of schemas to use. * If the targetNamespace of a schema specified using this method matches * the targetNamespace of a schema occuring in the instance document in * the schemaLocation attribute, or if the targetNamespace matches the * namespace attribute of the "import" element, the schema specified by the * user using this method will be used (i.e., the schemaLocation attribute * in the instance document or on the "import" element will be effectively ignored). * * If this method is called more than once, only the last one takes effect. * * The syntax is the same as for schemaLocation attributes in instance * documents: e.g, "http://www.example.com file_name.xsd". The user can * specify more than one XML Schema in the list. * * @param schemaLocation the list of schemas to use * * @see #getExternalSchemaLocation */ void setExternalSchemaLocation(const XMLCh* const schemaLocation); /** * This method is same as setExternalSchemaLocation(const XMLCh* const). * It takes native char string as parameter * * @param schemaLocation the list of schemas to use * * @see #setExternalSchemaLocation(const XMLCh* const) */ void setExternalSchemaLocation(const char* const schemaLocation); /** * This method allows the user to specify the no target namespace XML * Schema Location externally. If specified, the instance document's * noNamespaceSchemaLocation attribute will be effectively ignored. * * If this method is called more than once, only the last one takes effect. * * The syntax is the same as for the noNamespaceSchemaLocation attribute * that may occur in an instance document: e.g."file_name.xsd". * * @param noNamespaceSchemaLocation the XML Schema Location with no target namespace * * @see #getExternalNoNamespaceSchemaLocation */ void setExternalNoNamespaceSchemaLocation(const XMLCh* const noNamespaceSchemaLocation); /** * This method is same as setExternalNoNamespaceSchemaLocation(const XMLCh* const). * It takes native char string as parameter * * @param noNamespaceSchemaLocation the XML Schema Location with no target namespace * * @see #setExternalNoNamespaceSchemaLocation(const XMLCh* const) */ void setExternalNoNamespaceSchemaLocation(const char* const noNamespaceSchemaLocation); //@} // ----------------------------------------------------------------------- // Parsing methods // ----------------------------------------------------------------------- /** @name Parsing methods */ //@{ /** Parse via an input source object * * This method invokes the parsing process on the XML file specified * by the InputSource parameter. This API is borrowed from the * SAX Parser interface. * * @param source A const reference to the InputSource object which * points to the XML file to be parsed. * @param reuseGrammar The flag indicating whether the existing Grammar * should be reused or not for this parsing run. * If true, there cannot be any internal subset. * @exception SAXException Any SAX exception, possibly * wrapping another exception. * @exception XMLException An exception from the parser or client * handler code. * @exception IDOM_DOMException A DOM exception as per DOM spec. * @see InputSource#InputSource * @see #setEntityResolver * @see #setErrorHandler */ void parse(const InputSource& source, const bool reuseGrammar = false); /** Parse via a file path or URL * * This method invokes the parsing process on the XML file specified by * the Unicode string parameter 'systemId'. This method is borrowed * from the SAX Parser interface. * * @param systemId A const XMLCh pointer to the Unicode string which * contains the path to the XML file to be parsed. * @param reuseGrammar The flag indicating whether the existing Grammar * should be reused or not for this parsing run. * If true, there cannot be any internal subset. * * @exception SAXException Any SAX exception, possibly * wrapping another exception. * @exception XMLException An exception from the parser or client * handler code. * @exception DOM_DOMException A DOM exception as per DOM spec. * @see #parse(InputSource,...) */ void parse(const XMLCh* const systemId, const bool reuseGrammar = false); /** Parse via a file path or URL (in the local code page) * * This method invokes the parsing process on the XML file specified by * the native char* string parameter 'systemId'. * * @param systemId A const char pointer to a native string which * contains the path to the XML file to be parsed. * @param reuseGrammar The flag indicating whether the existing Grammar * should be reused or not for this parsing run. * If true, there cannot be any internal subset. * * @exception SAXException Any SAX exception, possibly * wrapping another exception. * @exception XMLException An exception from the parser or client * handler code. * @exception DOM_DOMException A DOM exception as per DOM spec. * @see #parse(InputSource,...) */ void parse(const char* const systemId, const bool reuseGrammar = false); /** Begin a progressive parse operation * * This method is used to start a progressive parse on a XML file. * To continue parsing, subsequent calls must be to the parseNext * method. * * It scans through the prolog and returns a token to be used on * subsequent scanNext() calls. If the return value is true, then the * token is legal and ready for further use. If it returns false, then * the scan of the prolog failed and the token is not going to work on * subsequent scanNext() calls. * * @param systemId A pointer to a Unicode string represting the path * to the XML file to be parsed. * @param toFill A token maintaing state information to maintain * internal consistency between invocation of 'parseNext' * calls. * @param reuseGrammar The flag indicating whether the existing Grammar * should be reused or not for this parsing process. * If true, there cannot be any internal subset. * @return 'true', if successful in parsing the prolog. It indicates the * user can go ahead with parsing the rest of the file. It * returns 'false' to indicate that the parser could not parse * the prolog. * * @see #parseNext * @see #parseFirst(char*,...) * @see #parseFirst(InputSource&,...) */ bool parseFirst ( const XMLCh* const systemId , XMLPScanToken& toFill , const bool reuseGrammar = false ); /** Begin a progressive parse operation * * This method is used to start a progressive parse on a XML file. * To continue parsing, subsequent calls must be to the parseNext * method. * * It scans through the prolog and returns a token to be used on * subsequent scanNext() calls. If the return value is true, then the * token is legal and ready for further use. If it returns false, then * the scan of the prolog failed and the token is not going to work on * subsequent scanNext() calls. * * @param systemId A pointer to a regular native string represting * the path to the XML file to be parsed. * @param toFill A token maintaing state information to maintain * internal consistency between invocation of 'parseNext' * calls. * @param reuseGrammar The flag indicating whether the existing Grammar * should be reused or not for this parsing run. * If true, there cannot be any internal subset. * * @return 'true', if successful in parsing the prolog. It indicates the * user can go ahead with parsing the rest of the file. It * returns 'false' to indicate that the parser could not parse * the prolog. * * @see #parseNext * @see #parseFirst(XMLCh*,...) * @see #parseFirst(InputSource&,...) */ bool parseFirst ( const char* const systemId , XMLPScanToken& toFill , const bool reuseGrammar = false ); /** Begin a progressive parse operation * * This method is used to start a progressive parse on a XML file. * To continue parsing, subsequent calls must be to the parseNext * method. * * It scans through the prolog and returns a token to be used on * subsequent scanNext() calls. If the return value is true, then the * token is legal and ready for further use. If it returns false, then * the scan of the prolog failed and the token is not going to work on * subsequent scanNext() calls. * * @param source A const reference to the InputSource object which * points to the XML file to be parsed. * @param toFill A token maintaing state information to maintain * internal consistency between invocation of 'parseNext' * calls. * @param reuseGrammar The flag indicating whether the existing Grammar * should be reused or not for this parsing process. * If true, there cannot be any internal subset. * * @return 'true', if successful in parsing the prolog. It indicates the * user can go ahead with parsing the rest of the file. It * returns 'false' to indicate that the parser could not parse * the prolog. * * @see #parseNext * @see #parseFirst(XMLCh*,...) * @see #parseFirst(char*,...) */ bool parseFirst ( const InputSource& source , XMLPScanToken& toFill , const bool reuseGrammar = false ); /** Continue a progressive parse operation * * This method is used to continue with progressive parsing of * XML files started by a call to 'parseFirst' method. * * It parses the XML file and stops as soon as it comes across * a XML token (as defined in the XML specification). * * @param token A token maintaing state information to maintain * internal consistency between invocation of 'parseNext' * calls. * * @return 'true', if successful in parsing the next XML token. * It indicates the user can go ahead with parsing the rest * of the file. It returns 'false' to indicate that the parser * could not find next token as per the XML specification * production rule. * * @see #parseFirst(XMLCh*,...) * @see #parseFirst(char*,...) * @see #parseFirst(InputSource&,...) */ bool parseNext(XMLPScanToken& token); /** Reset the parser after a progressive parse * * If a progressive parse loop exits before the end of the document * is reached, the parser has no way of knowing this. So it will leave * open any files or sockets or memory buffers that were in use at * the time that the parse loop exited. * * The next parse operation will cause these open files and such to * be closed, but the next parse operation might occur at some unknown * future point. To avoid this problem, you should reset the parser if * you exit the loop early. * * If you exited because of an error, then this cleanup will be done * for you. Its only when you exit the file prematurely of your own * accord, because you've found what you wanted in the file most * likely. * * @param token A token maintaing state information to maintain * internal consistency between invocation of 'parseNext' * calls. * * @see #parseFirst(XMLCh*,...) * @see #parseFirst(char*,...) * @see #parseFirst(InputSource&,...) */ void parseReset(XMLPScanToken& token); //@} // ----------------------------------------------------------------------- // Implementation of the XMLErrorReporter interface. // ----------------------------------------------------------------------- /** @name Implementation of the XMLErrorReporter interface. */ //@{ /** Handle errors reported from the parser * * This method is used to report back errors found while parsing the * XML file. This method is also borrowed from the SAX specification. * It calls the corresponding user installed Error Handler method: * 'fatal', 'error', 'warning' depending on the severity of the error. * This classification is defined by the XML specification. * * @param errCode An integer code for the error. * @param msgDomain A const pointer to an Unicode string representing * the message domain to use. * @param errType An enumeration classifying the severity of the error. * @param errorText A const pointer to an Unicode string representing * the text of the error message. * @param systemId A const pointer to an Unicode string representing * the system id of the XML file where this error * was discovered. * @param publicId A const pointer to an Unicode string representing * the public id of the XML file where this error * was discovered. * @param lineNum The line number where the error occurred. * @param colNum The column number where the error occurred. * @see ErrorHandler */ 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 ); /** Reset any error data before a new parse * * This method allows the user installed Error Handler callback to * 'reset' itself. * * This method is a no-op for this IDOM * implementation. */ virtual void resetErrors(); //@} // ----------------------------------------------------------------------- // Implementation of the XMLEntityHandler interface. // ----------------------------------------------------------------------- /** @name Implementation of the XMLEntityHandler interface. */ //@{ /** Handle an end of input source event * * This method is used to indicate the end of parsing of an external * entity file. * * This method is a no-op for this IDOM * implementation. * * @param inputSource A const reference to the InputSource object * which points to the XML file being parsed. * @see InputSource */ virtual void endInputSource(const InputSource& inputSource); /** Expand a system id * * This method allows an installed XMLEntityHandler to further * process any system id's of enternal entities encountered in * the XML file being parsed, such as redirection etc. * * This method always returns 'false' * for this IDOM implementation. * * @param systemId A const pointer to an Unicode string representing * the system id scanned by the parser. * @param toFill A pointer to a buffer in which the application * processed system id is stored. * @return 'true', if any processing is done, 'false' otherwise. */ virtual bool expandSystemId ( const XMLCh* const systemId , XMLBuffer& toFill ); /** Reset any entity handler information * * This method allows the installed XMLEntityHandler to reset * itself. * * This method is a no-op for this IDOM * implementation. */ virtual void resetEntities(); /** Resolve a public/system id * * This method allows a user installed entity handler to further * process any pointers to external entities. The applications can * implement 'redirection' via this callback. This method is also * borrowed from the SAX specification. * * @param publicId A const pointer to a Unicode string representing the * public id of the entity just parsed. * @param systemId A const pointer to a Unicode string representing the * system id of the entity just parsed. * @return The value returned by the user installed resolveEntity * method or NULL otherwise to indicate no processing was done. * @see EntityResolver */ virtual InputSource* resolveEntity ( const XMLCh* const publicId , const XMLCh* const systemId ); /** Handle a 'start input source' event * * This method is used to indicate the start of parsing an external * entity file. * * This method is a no-op for this IDOM parse * implementation. * * @param inputSource A const reference to the InputSource object * which points to the external entity * being parsed. */ virtual void startInputSource(const InputSource& inputSource); //@} // ----------------------------------------------------------------------- // Implementation of the XMLDocumentHandler interface. // ----------------------------------------------------------------------- /** @name Implementation of the XMLDocumentHandler interface. */ //@{ /** Handle document character events * * This method is used to report all the characters scanned by the * parser. This IDOM implementation stores this data in the appropriate * IDOM node, creating one if necessary. * * @param chars A const pointer to a Unicode string representing the * character data. * @param length The length of the Unicode string returned in 'chars'. * @param cdataSection A flag indicating if the characters represent * content from the CDATA section. */ virtual void docCharacters ( const XMLCh* const chars , const unsigned int length , const bool cdataSection ); /** Handle a document comment event * * This method is used to report any comments scanned by the parser. * A new comment node is created which stores this data. * * @param comment A const pointer to a null terminated Unicode * string representing the comment text. */ virtual void docComment ( const XMLCh* const comment ); /** Handle a document PI event * * This method is used to report any PI scanned by the parser. A new * PI node is created and appended as a child of the current node in * the tree. * * @param target A const pointer to a Unicode string representing the * target of the PI declaration. * @param data A const pointer to a Unicode string representing the * data of the PI declaration. See the PI production rule * in the XML specification for details. */ virtual void docPI ( const XMLCh* const target , const XMLCh* const data ); /** Handle the end of document event * * This method is used to indicate the end of the current document. */ virtual void endDocument(); /** Handle and end of element event * * This method is used to indicate the end tag of an element. The * IDOMParse pops the current element off the top of the element * stack, and make it the new current element. * * @param elemDecl A const reference to the object containing element * declaration information. * @param urlId An id referring to the namespace prefix, if * namespaces setting is switched on. * @param isRoot A flag indicating whether this element was the * root element. */ virtual void endElement ( const XMLElementDecl& elemDecl , const unsigned int urlId , const bool isRoot ); /** Handle and end of entity reference event * * This method is used to indicate that an end of an entity reference * was just scanned. * * @param entDecl A const reference to the object containing the * entity declaration information. */ virtual void endEntityReference ( const XMLEntityDecl& entDecl ); /** Handle an ignorable whitespace vent * * This method is used to report all the whitespace characters, which * are determined to be 'ignorable'. This distinction between characters * is only made, if validation is enabled. * * Any whitespace before content is ignored. If the current node is * already of type IDOM_Node::TEXT_NODE, then these whitespaces are * appended, otherwise a new Text node is created which stores this * data. Essentially all contiguous ignorable characters are collected * in one node. * * @param chars A const pointer to a Unicode string representing the * ignorable whitespace character data. * @param length The length of the Unicode string 'chars'. * @param cdataSection A flag indicating if the characters represent * content from the CDATA section. */ virtual void ignorableWhitespace ( const XMLCh* const chars , const unsigned int length , const bool cdataSection ); /** Handle a document reset event * * This method allows the user installed Document Handler to 'reset' * itself, freeing all the memory resources. The scanner calls this * method before starting a new parse event. */ virtual void resetDocument(); /** Handle a start document event * * This method is used to report the start of the parsing process. */ virtual void startDocument(); /** Handle a start element event * * This method is used to report the start of an element. It is * called at the end of the element, by which time all attributes * specified are also parsed. A new IDOM Element node is created * along with as many attribute nodes as required. This new element * is added appended as a child of the current node in the tree, and * then replaces it as the current node (if the isEmpty flag is false.) * * @param elemDecl A const reference to the object containing element * declaration information. * @param urlId An id referring to the namespace prefix, if * namespaces setting is switched on. * @param elemPrefix A const pointer to a Unicode string containing * the namespace prefix for this element. Applicable * only when namespace processing is enabled. * @param attrList A const reference to the object containing the * list of attributes just scanned for this element. * @param attrCount A count of number of attributes in the list * specified by the parameter 'attrList'. * @param isEmpty A flag indicating whether this is an empty element * or not. If empty, then no endElement() call will * be made. * @param isRoot A flag indicating whether this element was the * root element. * @see DocumentHandler#startElement */ virtual void startElement ( const XMLElementDecl& elemDecl , const unsigned int urlId , const XMLCh* const elemPrefix , const RefVectorOf& attrList , const unsigned int attrCount , const bool isEmpty , const bool isRoot ); /** Handle a start entity reference event * * This method is used to indicate the start of an entity reference. * If the expand entity reference flag is true, then a new * IDOM Entity reference node is created. * * @param entDecl A const reference to the object containing the * entity declaration information. */ virtual void startEntityReference ( const XMLEntityDecl& entDecl ); /** Handle an XMLDecl event * * This method is used to report the XML decl scanned by the parser. * Refer to the XML specification to see the meaning of parameters. * * This method is a no-op for this IDOM * implementation. * * @param versionStr A const pointer to a Unicode string representing * version string value. * @param encodingStr A const pointer to a Unicode string representing * the encoding string value. * @param standaloneStr A const pointer to a Unicode string * representing the standalone string value. * @param actualEncStr A const pointer to a Unicode string * representing the actual encoding string * value. */ virtual void XMLDecl ( const XMLCh* const versionStr , const XMLCh* const encodingStr , const XMLCh* const standaloneStr , const XMLCh* const actualEncStr ); //@} /** @name Deprecated Methods */ //@{ /** * This method returns the state of the parser's validation * handling flag which controls whether validation checks * are enforced or not. * * @return true, if the parser is currently configured to * do validation, false otherwise. * * @see #setDoValidation */ bool getDoValidation() const; /** * This method allows users to enable or disable the parser's validation * checks. * *

By default, the parser does not to any validation. The default * value is false.

* * @param newState The value specifying whether the parser should * do validity checks or not against the DTD in the * input XML document. * * @see #getDoValidation */ void setDoValidation(const bool newState); /** * Deprecated doctypehandler interfaces */ 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 // ----------------------------------------------------------------------- /** @name Protected getter methods */ //@{ /** Get the current IDOM node * * This provides derived classes with access to the current node, i.e. * the node to which new nodes are being added. */ IDOM_Node* getCurrentNode(); //@} // ----------------------------------------------------------------------- // Protected setter methods // ----------------------------------------------------------------------- /** @name Protected setter methods */ //@{ /** Set the current IDOM node * * This method sets the current node maintained inside the parser to * the one specified. * * @param toSet The IDOM node which will be the current node. */ void setCurrentNode(IDOM_Node* toSet); /** Set the document node * * This method sets the IDOM Document node to the one specified. * * @param toSet The new IDOM Document node for this XML document. */ 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* fNodeStack; bool fParseInProgress; XMLScanner* fScanner; bool fWithinElement; IDDocumentTypeImpl* fDocumentType; RefVectorOf* 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