[188] | 1 | /*
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| 2 | * The Apache Software License, Version 1.1
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| 3 | *
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| 4 | * Copyright (c) 1999-2000 The Apache Software Foundation. All rights
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| 5 | * reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | *
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| 11 | * 1. Redistributions of source code must retain the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer.
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| 13 | *
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright
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| 15 | * notice, this list of conditions and the following disclaimer in
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| 16 | * the documentation and/or other materials provided with the
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| 17 | * distribution.
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| 18 | *
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| 19 | * 3. The end-user documentation included with the redistribution,
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| 20 | * if any, must include the following acknowledgment:
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| 21 | * "This product includes software developed by the
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| 22 | * Apache Software Foundation (http://www.apache.org/)."
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| 23 | * Alternately, this acknowledgment may appear in the software itself,
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| 24 | * if and wherever such third-party acknowledgments normally appear.
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| 25 | *
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| 26 | * 4. The names "Xerces" and "Apache Software Foundation" must
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| 27 | * not be used to endorse or promote products derived from this
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| 28 | * software without prior written permission. For written
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| 29 | * permission, please contact apache\@apache.org.
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| 30 | *
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| 31 | * 5. Products derived from this software may not be called "Apache",
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| 32 | * nor may "Apache" appear in their name, without prior written
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| 33 | * permission of the Apache Software Foundation.
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| 34 | *
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| 35 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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| 36 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 37 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 38 | * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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| 39 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 40 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 41 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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| 42 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 43 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 44 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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| 45 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 46 | * SUCH DAMAGE.
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| 47 | * ====================================================================
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| 48 | *
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| 49 | * This software consists of voluntary contributions made by many
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| 50 | * individuals on behalf of the Apache Software Foundation, and was
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| 51 | * originally based on software copyright (c) 1999, International
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| 52 | * Business Machines, Inc., http://www.ibm.com . For more information
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| 53 | * on the Apache Software Foundation, please see
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| 54 | * <http://www.apache.org/>.
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| 55 | */
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| 56 |
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| 57 | /*
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| 58 | * $Log: XMLEntityHandler.hpp,v $
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| 59 | * Revision 1.7 2003/10/30 21:37:31 knoaman
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| 60 | * Enhanced Entity Resolver Support. Thanks to David Cargill.
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| 61 | *
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| 62 | * Revision 1.6 2003/03/07 18:08:10 tng
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| 63 | * Return a reference instead of void for operator=
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| 64 | *
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| 65 | * Revision 1.5 2002/11/04 15:00:21 tng
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| 66 | * C++ Namespace Support.
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| 67 | *
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| 68 | * Revision 1.4 2002/06/06 20:41:51 tng
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| 69 | * Regression fix: should assign the returned InputSource from resolveEntity to srcToFill.
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| 70 | *
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| 71 | * Revision 1.3 2002/05/31 15:14:07 tng
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| 72 | * Fix doxygen documentation.
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| 73 | *
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| 74 | * Revision 1.2 2002/05/29 21:47:08 knoaman
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| 75 | * DOM L3 LS: DOMInputSource, DOMEntityResolver, DOMImplementationLS and DOMBuilder
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| 76 | *
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| 77 | * Revision 1.1.1.1 2002/02/01 22:21:51 peiyongz
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| 78 | * sane_include
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| 79 | *
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| 80 | * Revision 1.7 2000/03/02 19:54:25 roddey
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| 81 | * This checkin includes many changes done while waiting for the
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| 82 | * 1.1.0 code to be finished. I can't list them all here, but a list is
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| 83 | * available elsewhere.
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| 84 | *
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| 85 | * Revision 1.6 2000/02/24 20:00:23 abagchi
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| 86 | * Swat for removing Log from API docs
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| 87 | *
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| 88 | * Revision 1.5 2000/02/16 21:42:58 aruna1
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| 89 | * API Doc++ summary changes in
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| 90 | *
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| 91 | * Revision 1.4 2000/02/15 01:21:31 roddey
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| 92 | * Some initial documentation improvements. More to come...
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| 93 | *
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| 94 | * Revision 1.3 2000/02/06 07:47:48 rahulj
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| 95 | * Year 2K copyright swat.
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| 96 | *
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| 97 | * Revision 1.2 1999/12/15 19:46:28 roddey
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| 98 | * Got rid of redundant 'const' on bool return value. Some compilers choke on this
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| 99 | * and its not useful anyway.
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| 100 | *
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| 101 | * Revision 1.1.1.1 1999/11/09 01:08:33 twl
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| 102 | * Initial checkin
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| 103 | *
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| 104 | * Revision 1.2 1999/11/08 20:44:38 rahul
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| 105 | * Swat for adding in Product name and CVS comment log variable.
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| 106 | *
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| 107 | */
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| 108 |
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| 109 |
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| 110 | #if !defined(XMLENTITYHANDLER_HPP)
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| 111 | #define XMLENTITYHANDLER_HPP
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| 112 |
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| 113 | #include <xercesc/util/XercesDefs.hpp>
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| 114 |
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| 115 | XERCES_CPP_NAMESPACE_BEGIN
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| 116 |
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| 117 | class InputSource;
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| 118 | class XMLBuffer;
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| 119 | class XMLResourceIdentifier;
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| 120 |
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| 121 | /**
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| 122 | * This abstract class is a callback mechanism for the scanner. By creating
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| 123 | * a derivative of this class and plugging into the scanner, the scanner
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| 124 | * will call back on the object's methods to entity events.
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| 125 | *
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| 126 | * This class is primarily for use by those writing their own parser classes.
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| 127 | * If you use the standard parser classes, DOMParser and SAXParser, you won't
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| 128 | * use this API. You will instead use a similar mechanism defined by the SAX
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| 129 | * API, called EntityResolver.
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| 130 | */
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| 131 | class XMLPARSER_EXPORT XMLEntityHandler
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| 132 | {
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| 133 | public:
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| 134 | // -----------------------------------------------------------------------
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| 135 | // Constructors are hidden, only the virtual destructor is exposed
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| 136 | // -----------------------------------------------------------------------
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| 137 |
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| 138 | /** @name Destructor */
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| 139 | //@{
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| 140 |
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| 141 | /**
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| 142 | * Default destructor
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| 143 | */
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| 144 | virtual ~XMLEntityHandler()
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| 145 | {
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| 146 | }
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| 147 | //@}
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| 148 |
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| 149 |
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| 150 | // -----------------------------------------------------------------------
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| 151 | // The virtual entity handler interface
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| 152 | // -----------------------------------------------------------------------
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| 153 | /** @name The pure virtual methods in this interface. */
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| 154 | //@{
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| 155 |
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| 156 | /**
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| 157 | * This method get called after the scanner has finished reading from
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| 158 | * the given input source while processing external entity references.
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| 159 | *
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| 160 | * @param inputSource The input source for the entity
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| 161 | */
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| 162 | virtual void endInputSource(const InputSource& inputSource) = 0;
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| 163 |
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| 164 | /**
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| 165 | * This method allows the passes the scanned systemId to the entity
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| 166 | * handler, thereby giving it a chance to provide any customized
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| 167 | * handling like resolving relative path names. The scanner first
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| 168 | * calls this method before calling <code>resolveEntity</code>.
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| 169 | *
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| 170 | * @param systemId The system id extracted by the scanner from the
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| 171 | * input source.
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| 172 | * @param toFill The buffer in which the fully expanded system id needs
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| 173 | * to be stored.
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| 174 | */
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| 175 | virtual bool expandSystemId
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| 176 | (
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| 177 | const XMLCh* const systemId
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| 178 | , XMLBuffer& toFill
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| 179 | ) = 0;
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| 180 |
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| 181 | /**
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| 182 | * This method allows the entity handler to reset itself, so that
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| 183 | * it can be used again. It is called prior to a new document parse
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| 184 | * operation.
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| 185 | */
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| 186 | virtual void resetEntities() = 0;
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| 187 |
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| 188 | /**
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| 189 | * This method allows the entity handler to provide customized
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| 190 | * application specific entity resolution. This method is defined
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| 191 | * by SAX 1.0 API.
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| 192 | *
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| 193 | * <i>Only one resolveEntity method will be used. If both setEntityResolver and
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| 194 | * setXMLEntityResolver are called, then the last one is used.</i>
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| 195 | *
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| 196 | * @param publicId A const pointer to a Unicode string representing the
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| 197 | * public id of the entity just parsed.
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| 198 | * @param systemId A const pointer to a Unicode string representing the
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| 199 | * system id of the entity just parsed.
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| 200 | * @param baseURI A const pointer to a Unicode string representing the
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| 201 | * base URI of the entity just parsed,
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| 202 | * or <code>null</code> if there is no base URI.
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| 203 | * @return The value returned by the SAX resolveEntity method or
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| 204 | * NULL otherwise to indicate no processing was done.
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| 205 | * The returned InputSource is owned by the parser which is
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| 206 | * responsible to clean up the memory.
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| 207 | */
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| 208 | virtual InputSource* resolveEntity
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| 209 | (
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| 210 | const XMLCh* const publicId
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| 211 | , const XMLCh* const systemId
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| 212 | , const XMLCh* const baseURI = 0
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| 213 | ) = 0;
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| 214 |
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| 215 | /**
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| 216 | * This method allows the entity handler to provide customized
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| 217 | * application specific entity resolution.
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| 218 | *
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| 219 | * <i>Only one resolveEntity method will be used. If both setEntityResolver and
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| 220 | * setXMLEntityResolver are called, then the last one is used.</i>
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| 221 | *
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| 222 | * @param resourceIdentifier An object containing the type of
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| 223 | * resource to be resolved and the associated data members
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| 224 | * corresponding to this type.
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| 225 | * @return The value returned by the resolveEntity method or
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| 226 | * NULL otherwise to indicate no processing was done.
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| 227 | * The returned InputSource is owned by the parser which is
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| 228 | * responsible to clean up the memory.
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| 229 | */
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| 230 | virtual InputSource* resolveEntity
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| 231 | (
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| 232 | XMLResourceIdentifier* resourceIdentifier
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| 233 | ) = 0;
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| 234 |
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| 235 | /**
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| 236 | * This method will be called before the scanner starts reading
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| 237 | * from an input source while processing external entity references.
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| 238 | *
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| 239 | * @param inputSource The external input source.
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| 240 | */
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| 241 | virtual void startInputSource(const InputSource& inputSource) = 0;
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| 242 | //@}
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| 243 |
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| 244 |
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| 245 | protected :
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| 246 | // -----------------------------------------------------------------------
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| 247 | // Hidden Constructors
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| 248 | // -----------------------------------------------------------------------
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| 249 | /** @name Constructor */
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| 250 | //@{
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| 251 |
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| 252 | /**
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| 253 | * Protected default constructor
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| 254 | */
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| 255 | XMLEntityHandler()
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| 256 | {
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| 257 | }
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| 258 | //@}
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| 259 |
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| 260 |
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| 261 |
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| 262 | private:
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| 263 | // -----------------------------------------------------------------------
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| 264 | // Unimplemented constructors and destructor
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| 265 | // -----------------------------------------------------------------------
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| 266 | XMLEntityHandler(const XMLEntityHandler&);
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| 267 | XMLEntityHandler& operator=(const XMLEntityHandler&);
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| 268 | };
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| 269 |
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| 270 | XERCES_CPP_NAMESPACE_END
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| 271 |
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| 272 | #endif
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