DOMInputSource.hpp
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上传日期:2013-06-25
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- #ifndef DOMInputSource_HEADER_GUARD_
- #define DOMInputSource_HEADER_GUARD_
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2002 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) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Id: DOMInputSource.hpp,v 1.9 2003/03/07 19:59:05 tng Exp $
- */
- #include <xercesc/util/XercesDefs.hpp>
- XERCES_CPP_NAMESPACE_BEGIN
- class BinInputStream;
- /**
- * This interface represents a single input source for an XML entity.
- *
- * <p>This interface allows an application to encapsulate information about
- * an input source in a single object, which may include a public identifier,
- * a system identifier, a byte stream (possibly with a specified encoding),
- * and/or a character stream.</p>
- *
- * <p>There are two places that the application will deliver this input source
- * to the parser: as the argument to the parse method, or as the return value
- * of the DOMEntityResolver.resolveEntity method.</p>
- *
- * <p>The DOMBuilder will use the DOMInputSource object to determine how to
- * read XML input. If there is a character stream available, the parser will
- * read that stream directly; if not, the parser will use a byte stream, if
- * available; if neither a character stream nor a byte stream is available,
- * the parser will attempt to open a URI connection to the resource identified
- * by the system identifier.</p>
- *
- * <p>A DOMInputSource object belongs to the application: the parser shall
- * never modify it in any way (it may modify a copy if necessary).</p>
- *
- * @see DOMBuilder#parse
- * @see DOMEntityResolver#resolveEntity
- * @since DOM Level 3
- */
- class CDOM_EXPORT DOMInputSource
- {
- protected:
- // -----------------------------------------------------------------------
- // Hidden constructors
- // -----------------------------------------------------------------------
- /** @name Hidden constructors */
- //@{
- DOMInputSource() {};
- //@}
- private:
- // -----------------------------------------------------------------------
- // Unimplemented constructors and operators
- // -----------------------------------------------------------------------
- /** @name Unimplemented constructors and operators */
- //@{
- DOMInputSource(const DOMInputSource &);
- DOMInputSource & operator = (const DOMInputSource &);
- //@}
- public:
- // -----------------------------------------------------------------------
- // All constructors are hidden, just the destructor is available
- // -----------------------------------------------------------------------
- /** @name Destructor */
- //@{
- /**
- * Destructor
- *
- */
- virtual ~DOMInputSource() {};
- //@}
- // -----------------------------------------------------------------------
- // Virtual DOMInputSource interface
- // -----------------------------------------------------------------------
- /** @name Functions introduced in DOM Level 3 */
- //@{
- // -----------------------------------------------------------------------
- // Getter methods
- // -----------------------------------------------------------------------
- /**
- * An input source can be set to force the parser to assume a particular
- * encoding for the data that input source reprsents, via the setEncoding()
- * method. This method returns name of the encoding that is to be forced.
- * If the encoding has never been forced, it returns a null pointer.
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @return The forced encoding, or null if none was supplied.
- * @see #setEncoding
- * @since DOM Level 3
- */
- virtual const XMLCh* getEncoding() const = 0;
- /**
- * Get the public identifier for this input source.
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @return The public identifier, or null if none was supplied.
- * @see #setPublicId
- * @since DOM Level 3
- */
- virtual const XMLCh* getPublicId() const = 0;
- /**
- * Get the system identifier for this input source.
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * <p>If the system ID is a URL, it will be fully resolved.</p>
- *
- * @return The system identifier.
- * @see #setSystemId
- * @since DOM Level 3
- */
- virtual const XMLCh* getSystemId() const = 0;
- /**
- * Get the base URI to be used for resolving relative URIs to absolute
- * URIs. If the baseURI is itself a relative URI, the behavior is
- * implementation dependent.
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @return The base URI.
- * @see #setBaseURI
- * @since DOM Level 3
- */
- virtual const XMLCh* getBaseURI() const = 0;
- // -----------------------------------------------------------------------
- // Setter methods
- // -----------------------------------------------------------------------
- /**
- * Set the encoding which will be required for use with the XML text read
- * via a stream opened by this input source.
- *
- * <p>This is usually not set, allowing the encoding to be sensed in the
- * usual XML way. However, in some cases, the encoding in the file is known
- * to be incorrect because of intermediate transcoding, for instance
- * encapsulation within a MIME document.
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @param encodingStr The name of the encoding to force.
- * @since DOM Level 3
- */
- virtual void setEncoding(const XMLCh* const encodingStr) = 0;
- /**
- * Set the public identifier for this input source.
- *
- * <p>The public identifier is always optional: if the application writer
- * includes one, it will be provided as part of the location information.</p>
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @param publicId The public identifier as a string.
- * @see #getPublicId
- * @since DOM Level 3
- */
- virtual void setPublicId(const XMLCh* const publicId) = 0;
- /**
- * Set the system identifier for this input source.
- *
- * <p>The system id is always required. The public id may be used to map
- * to another system id, but the system id must always be present as a fall
- * back.</p>
- *
- * <p>If the system ID is a URL, it must be fully resolved.</p>
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @param systemId The system identifier as a string.
- * @see #getSystemId
- * @since DOM Level 3
- */
- virtual void setSystemId(const XMLCh* const systemId) = 0;
- /**
- * Set the base URI to be used for resolving relative URIs to absolute
- * URIs. If the baseURI is itself a relative URI, the behavior is
- * implementation dependent.
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @param baseURI The base URI.
- * @see #getBaseURI
- * @since DOM Level 3
- */
- virtual void setBaseURI(const XMLCh* const baseURI) = 0;
- //@}
- // -----------------------------------------------------------------------
- // Non-standard Extension
- // -----------------------------------------------------------------------
- /** @name Non-standard Extension */
- //@{
- /**
- * Makes the byte stream for this input source.
- *
- * <p>The derived class must create and return a binary input stream of an
- * appropriate type for its kind of data source. The returned stream must
- * be dynamically allocated and becomes the parser's property.
- * </p>
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @see BinInputStream
- */
- virtual BinInputStream* makeStream() const = 0;
- /**
- * Indicates if the parser should issue fatal error if this input source
- * is not found. If set to false, the parser issue warning message instead.
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @param flag True if the parser should issue fatal error if this input source is not found.
- * If set to false, the parser issue warning message instead. (Default: true)
- *
- * @see #getIssueFatalErrorIfNotFound
- */
- virtual void setIssueFatalErrorIfNotFound(const bool flag) = 0;
- /**
- * Get the flag that indicates if the parser should issue fatal error if this input source
- * is not found.
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * @return True if the parser should issue fatal error if this input source is not found.
- * False if the parser issue warning message instead.
- * @see #setIssueFatalErrorIfNotFound
- */
- virtual const bool getIssueFatalErrorIfNotFound() const = 0;
- /**
- * Called to indicate that this DOMInputSource is no longer in use
- * and that the implementation may relinquish any resources associated with it.
- *
- * Access to a released object will lead to unexpected result.
- */
- virtual void release() = 0;
- //@}
- };
- XERCES_CPP_NAMESPACE_END
- #endif