[2674] | 1 | /* |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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| 3 | * contributor license agreements. See the NOTICE file distributed with |
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| 4 | * this work for additional information regarding copyright ownership. |
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| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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| 6 | * (the "License"); you may not use this file except in compliance with |
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| 7 | * the License. You may obtain a copy of the License at |
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| 8 | * |
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 10 | * |
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| 11 | * Unless required by applicable law or agreed to in writing, software |
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 14 | * See the License for the specific language governing permissions and |
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| 15 | * limitations under the License. |
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| 16 | */ |
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| 17 | |
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| 18 | /* |
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| 19 | * $Id: XPathMatcher.hpp 568078 2007-08-21 11:43:25Z amassari $ |
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| 20 | */ |
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| 21 | |
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| 22 | #if !defined(XPATHMATCHER_HPP) |
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| 23 | #define XPATHMATCHER_HPP |
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| 24 | |
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| 25 | |
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| 26 | // --------------------------------------------------------------------------- |
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| 27 | // Includes |
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| 28 | // --------------------------------------------------------------------------- |
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| 29 | #include <xercesc/util/ValueStackOf.hpp> |
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| 30 | #include <xercesc/util/RefVectorOf.hpp> |
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| 31 | #include <xercesc/framework/XMLBuffer.hpp> |
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| 32 | |
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| 33 | XERCES_CPP_NAMESPACE_BEGIN |
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| 34 | |
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| 35 | // --------------------------------------------------------------------------- |
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| 36 | // Forward Declaration |
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| 37 | // --------------------------------------------------------------------------- |
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| 38 | class XMLElementDecl; |
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| 39 | class XercesXPath; |
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| 40 | class IdentityConstraint; |
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| 41 | class DatatypeValidator; |
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| 42 | class XMLStringPool; |
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| 43 | class XercesLocationPath; |
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| 44 | class XMLAttr; |
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| 45 | |
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| 46 | class VALIDATORS_EXPORT XPathMatcher : public XMemory |
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| 47 | { |
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| 48 | public: |
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| 49 | // ----------------------------------------------------------------------- |
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| 50 | // Constructors/Destructor |
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| 51 | // ----------------------------------------------------------------------- |
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| 52 | XPathMatcher(XercesXPath* const xpath, |
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| 53 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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| 54 | XPathMatcher(XercesXPath* const xpath, |
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| 55 | IdentityConstraint* const ic, |
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| 56 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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| 57 | virtual ~XPathMatcher(); |
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| 58 | |
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| 59 | // ----------------------------------------------------------------------- |
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| 60 | // Getter methods |
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| 61 | // ----------------------------------------------------------------------- |
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| 62 | IdentityConstraint* getIdentityConstraint() const { return fIdentityConstraint; } |
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| 63 | MemoryManager* getMemoryManager() const { return fMemoryManager; } |
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| 64 | |
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| 65 | // ----------------------------------------------------------------------- |
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| 66 | // Match methods |
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| 67 | // ----------------------------------------------------------------------- |
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| 68 | /** |
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| 69 | * Returns true if XPath has been matched. |
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| 70 | */ |
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| 71 | int isMatched(); |
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| 72 | virtual int getInitialDepth() const; |
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| 73 | |
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| 74 | // ----------------------------------------------------------------------- |
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| 75 | // XMLDocumentHandler methods |
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| 76 | // ----------------------------------------------------------------------- |
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| 77 | virtual void startDocumentFragment(); |
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| 78 | virtual void startElement(const XMLElementDecl& elemDecl, |
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| 79 | const unsigned int urlId, |
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| 80 | const XMLCh* const elemPrefix, |
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| 81 | const RefVectorOf<XMLAttr>& attrList, |
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| 82 | const unsigned int attrCount); |
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| 83 | virtual void endElement(const XMLElementDecl& elemDecl, |
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| 84 | const XMLCh* const elemContent); |
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| 85 | |
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| 86 | protected: |
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| 87 | |
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| 88 | enum |
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| 89 | { |
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| 90 | XP_MATCHED = 1 // matched any way |
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| 91 | , XP_MATCHED_A = 3 // matched on the attribute axis |
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| 92 | , XP_MATCHED_D = 5 // matched on the descendant-or-self axixs |
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| 93 | , XP_MATCHED_DP = 13 // matched some previous (ancestor) node on the |
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| 94 | // descendant-or-self-axis, but not this node |
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| 95 | }; |
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| 96 | |
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| 97 | // ----------------------------------------------------------------------- |
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| 98 | // Match methods |
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| 99 | // ----------------------------------------------------------------------- |
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| 100 | /** |
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| 101 | * This method is called when the XPath handler matches the XPath |
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| 102 | * expression. Subclasses can override this method to provide default |
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| 103 | * handling upon a match. |
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| 104 | */ |
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| 105 | virtual void matched(const XMLCh* const content, |
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| 106 | DatatypeValidator* const dv, const bool isNil); |
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| 107 | |
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| 108 | private: |
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| 109 | // ----------------------------------------------------------------------- |
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| 110 | // Unimplemented constructors and operators |
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| 111 | // ----------------------------------------------------------------------- |
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| 112 | XPathMatcher(const XPathMatcher&); |
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| 113 | XPathMatcher& operator=(const XPathMatcher&); |
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| 114 | |
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| 115 | // ----------------------------------------------------------------------- |
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| 116 | // Helper methods |
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| 117 | // ----------------------------------------------------------------------- |
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| 118 | void init(XercesXPath* const xpath); |
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| 119 | void cleanUp(); |
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| 120 | |
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| 121 | // ----------------------------------------------------------------------- |
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| 122 | // Data members |
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| 123 | // |
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| 124 | // fMatched |
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| 125 | // Indicates whether XPath has been matched or not |
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| 126 | // |
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| 127 | // fNoMatchDepth |
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| 128 | // Indicates whether matching is successful for the given xpath |
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| 129 | // expression. |
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| 130 | // |
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| 131 | // fCurrentStep |
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| 132 | // Stores current step. |
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| 133 | // |
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| 134 | // fStepIndexes |
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| 135 | // Integer stack of step indexes. |
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| 136 | // |
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| 137 | // fLocationPaths |
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| 138 | // fLocationPathSize |
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| 139 | // XPath location path, and its size. |
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| 140 | // |
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| 141 | // fIdentityConstraint |
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| 142 | // The identity constraint we're the matcher for. Only used for |
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| 143 | // selectors. |
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| 144 | // |
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| 145 | // ----------------------------------------------------------------------- |
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| 146 | unsigned int fLocationPathSize; |
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| 147 | int* fMatched; |
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| 148 | int* fNoMatchDepth; |
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| 149 | int* fCurrentStep; |
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| 150 | RefVectorOf<ValueStackOf<int> >* fStepIndexes; |
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| 151 | RefVectorOf<XercesLocationPath>* fLocationPaths; |
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| 152 | IdentityConstraint* fIdentityConstraint; |
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| 153 | MemoryManager* fMemoryManager; |
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| 154 | }; |
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| 155 | |
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| 156 | // --------------------------------------------------------------------------- |
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| 157 | // XPathMatcher: Helper methods |
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| 158 | // --------------------------------------------------------------------------- |
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| 159 | inline void XPathMatcher::cleanUp() { |
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| 160 | |
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| 161 | fMemoryManager->deallocate(fMatched);//delete [] fMatched; |
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| 162 | fMemoryManager->deallocate(fNoMatchDepth);//delete [] fNoMatchDepth; |
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| 163 | fMemoryManager->deallocate(fCurrentStep);//delete [] fCurrentStep; |
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| 164 | delete fStepIndexes; |
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| 165 | } |
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| 166 | |
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| 167 | XERCES_CPP_NAMESPACE_END |
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| 168 | |
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| 169 | #endif |
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| 170 | |
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| 171 | /** |
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| 172 | * End of file XPathMatcher.hpp |
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| 173 | */ |
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| 174 | |
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