[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) 2001-2003 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) 2001, 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 | * $Id: XPathMatcher.hpp,v 1.7 2004/01/29 11:52:32 cargilld Exp $
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| 59 | */
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| 60 |
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| 61 | #if !defined(XPATHMATCHER_HPP)
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| 62 | #define XPATHMATCHER_HPP
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| 63 |
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| 64 |
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| 65 | // ---------------------------------------------------------------------------
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| 66 | // Includes
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| 67 | // ---------------------------------------------------------------------------
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| 68 | #include <xercesc/util/ValueStackOf.hpp>
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| 69 | #include <xercesc/util/RefVectorOf.hpp>
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| 70 | #include <xercesc/framework/XMLBuffer.hpp>
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| 71 |
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| 72 | XERCES_CPP_NAMESPACE_BEGIN
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| 73 |
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| 74 | // ---------------------------------------------------------------------------
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| 75 | // Forward Declaration
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| 76 | // ---------------------------------------------------------------------------
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| 77 | class XMLElementDecl;
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| 78 | class XercesXPath;
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| 79 | class IdentityConstraint;
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| 80 | class DatatypeValidator;
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| 81 | class XMLStringPool;
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| 82 | class XercesLocationPath;
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| 83 | class XMLAttr;
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| 84 |
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| 85 | class VALIDATORS_EXPORT XPathMatcher : public XMemory
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| 86 | {
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| 87 | public:
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| 88 | // -----------------------------------------------------------------------
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| 89 | // Constructors/Destructor
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| 90 | // -----------------------------------------------------------------------
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| 91 | XPathMatcher(XercesXPath* const xpath,
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| 92 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 93 | XPathMatcher(XercesXPath* const xpath,
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| 94 | IdentityConstraint* const ic,
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| 95 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 96 | virtual ~XPathMatcher();
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| 97 |
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| 98 | // -----------------------------------------------------------------------
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| 99 | // Getter methods
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| 100 | // -----------------------------------------------------------------------
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| 101 | IdentityConstraint* getIdentityConstraint() const { return fIdentityConstraint; }
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| 102 | MemoryManager* getMemoryManager() const { return fMemoryManager; }
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| 103 |
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| 104 | // -----------------------------------------------------------------------
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| 105 | // Match methods
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| 106 | // -----------------------------------------------------------------------
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| 107 | /**
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| 108 | * Returns true if XPath has been matched.
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| 109 | */
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| 110 | int isMatched();
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| 111 | virtual int getInitialDepth() const;
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| 112 |
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| 113 | // -----------------------------------------------------------------------
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| 114 | // XMLDocumentHandler methods
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| 115 | // -----------------------------------------------------------------------
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| 116 | virtual void startDocumentFragment();
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| 117 | virtual void startElement(const XMLElementDecl& elemDecl,
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| 118 | const unsigned int urlId,
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| 119 | const XMLCh* const elemPrefix,
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| 120 | const RefVectorOf<XMLAttr>& attrList,
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| 121 | const unsigned int attrCount);
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| 122 | virtual void endElement(const XMLElementDecl& elemDecl,
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| 123 | const XMLCh* const elemContent);
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| 124 |
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| 125 | protected:
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| 126 |
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| 127 | enum
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| 128 | {
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| 129 | XP_MATCHED = 1 // matched any way
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| 130 | , XP_MATCHED_A = 3 // matched on the attribute axis
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| 131 | , XP_MATCHED_D = 5 // matched on the descendant-or-self axixs
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| 132 | , XP_MATCHED_DP = 13 // matched some previous (ancestor) node on the
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| 133 | // descendant-or-self-axis, but not this node
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| 134 | };
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| 135 |
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| 136 | // -----------------------------------------------------------------------
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| 137 | // Match methods
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| 138 | // -----------------------------------------------------------------------
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| 139 | /**
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| 140 | * This method is called when the XPath handler matches the XPath
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| 141 | * expression. Subclasses can override this method to provide default
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| 142 | * handling upon a match.
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| 143 | */
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| 144 | virtual void matched(const XMLCh* const content,
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| 145 | DatatypeValidator* const dv, const bool isNil);
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| 146 |
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| 147 | private:
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| 148 | // -----------------------------------------------------------------------
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| 149 | // Unimplemented constructors and operators
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| 150 | // -----------------------------------------------------------------------
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| 151 | XPathMatcher(const XPathMatcher&);
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| 152 | XPathMatcher& operator=(const XPathMatcher&);
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| 153 |
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| 154 | // -----------------------------------------------------------------------
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| 155 | // Helper methods
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| 156 | // -----------------------------------------------------------------------
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| 157 | void init(XercesXPath* const xpath);
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| 158 | void cleanUp();
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| 159 |
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| 160 | // -----------------------------------------------------------------------
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| 161 | // Data members
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| 162 | //
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| 163 | // fMatched
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| 164 | // Indicates whether XPath has been matched or not
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| 165 | //
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| 166 | // fNoMatchDepth
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| 167 | // Indicates whether matching is successful for the given xpath
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| 168 | // expression.
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| 169 | //
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| 170 | // fCurrentStep
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| 171 | // Stores current step.
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| 172 | //
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| 173 | // fStepIndexes
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| 174 | // Integer stack of step indexes.
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| 175 | //
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| 176 | // fLocationPaths
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| 177 | // fLocationPathSize
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| 178 | // XPath location path, and its size.
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| 179 | //
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| 180 | // fIdentityConstraint
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| 181 | // The identity constraint we're the matcher for. Only used for
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| 182 | // selectors.
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| 183 | //
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| 184 | // -----------------------------------------------------------------------
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| 185 | unsigned int fLocationPathSize;
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| 186 | int* fMatched;
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| 187 | int* fNoMatchDepth;
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| 188 | int* fCurrentStep;
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| 189 | RefVectorOf<ValueStackOf<int> >* fStepIndexes;
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| 190 | RefVectorOf<XercesLocationPath>* fLocationPaths;
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| 191 | IdentityConstraint* fIdentityConstraint;
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| 192 | MemoryManager* fMemoryManager;
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| 193 | };
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| 194 |
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| 195 | // ---------------------------------------------------------------------------
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| 196 | // XPathMatcher: Helper methods
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| 197 | // ---------------------------------------------------------------------------
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| 198 | inline void XPathMatcher::cleanUp() {
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| 199 |
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| 200 | fMemoryManager->deallocate(fMatched);//delete [] fMatched;
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| 201 | fMemoryManager->deallocate(fNoMatchDepth);//delete [] fNoMatchDepth;
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| 202 | fMemoryManager->deallocate(fCurrentStep);//delete [] fCurrentStep;
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| 203 | delete fStepIndexes;
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| 204 | }
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| 205 |
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| 206 | XERCES_CPP_NAMESPACE_END
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| 207 |
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| 208 | #endif
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| 209 |
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| 210 | /**
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| 211 | * End of file XPathMatcher.hpp
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| 212 | */
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| 213 |
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