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: SGXMLScanner.hpp 568078 2007-08-21 11:43:25Z amassari $ |
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20 | */ |
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21 | |
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22 | |
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23 | #if !defined(SGXMLSCANNER_HPP) |
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24 | #define SGXMLSCANNER_HPP |
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25 | |
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26 | #include <xercesc/internal/XMLScanner.hpp> |
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27 | #include <xercesc/util/KVStringPair.hpp> |
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28 | #include <xercesc/util/ValueHashTableOf.hpp> |
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29 | #include <xercesc/util/RefHash3KeysIdPool.hpp> |
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30 | #include <xercesc/validators/common/Grammar.hpp> |
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31 | #include <xercesc/validators/schema/SchemaElementDecl.hpp> |
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32 | |
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33 | |
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34 | XERCES_CPP_NAMESPACE_BEGIN |
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35 | |
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36 | class SchemaGrammar; |
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37 | class SchemaValidator; |
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38 | class IdentityConstraintHandler; |
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39 | class IdentityConstraint; |
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40 | class ContentLeafNameTypeVector; |
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41 | class SchemaAttDef; |
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42 | class XMLContentModel; |
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43 | class XSModel; |
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44 | class PSVIAttributeList; |
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45 | class PSVIElement; |
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46 | |
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47 | // This is a scanner class, which process XML Schema grammar. |
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48 | class XMLPARSER_EXPORT SGXMLScanner : public XMLScanner |
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49 | { |
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50 | public : |
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51 | // ----------------------------------------------------------------------- |
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52 | // Constructors and Destructor |
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53 | // ----------------------------------------------------------------------- |
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54 | SGXMLScanner |
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55 | ( |
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56 | XMLValidator* const valToAdopt |
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57 | , GrammarResolver* const grammarResolver |
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58 | , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager |
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59 | ); |
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60 | SGXMLScanner |
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61 | ( |
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62 | XMLDocumentHandler* const docHandler |
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63 | , DocTypeHandler* const docTypeHandler |
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64 | , XMLEntityHandler* const entityHandler |
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65 | , XMLErrorReporter* const errReporter |
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66 | , XMLValidator* const valToAdopt |
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67 | , GrammarResolver* const grammarResolver |
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68 | , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager |
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69 | ); |
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70 | virtual ~SGXMLScanner(); |
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71 | |
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72 | // ----------------------------------------------------------------------- |
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73 | // XMLScanner public virtual methods |
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74 | // ----------------------------------------------------------------------- |
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75 | virtual const XMLCh* getName() const; |
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76 | virtual NameIdPool<DTDEntityDecl>* getEntityDeclPool(); |
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77 | virtual const NameIdPool<DTDEntityDecl>* getEntityDeclPool() const; |
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78 | virtual unsigned int resolveQName |
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79 | ( |
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80 | const XMLCh* const qName |
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81 | , XMLBuffer& prefixBufToFill |
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82 | , const short mode |
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83 | , int& prefixColonPos |
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84 | ); |
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85 | virtual void scanDocument |
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86 | ( |
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87 | const InputSource& src |
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88 | ); |
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89 | virtual bool scanNext(XMLPScanToken& toFill); |
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90 | virtual Grammar* loadGrammar |
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91 | ( |
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92 | const InputSource& src |
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93 | , const short grammarType |
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94 | , const bool toCache = false |
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95 | ); |
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96 | virtual Grammar::GrammarType getCurrentGrammarType() const; |
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97 | |
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98 | protected: |
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99 | // ----------------------------------------------------------------------- |
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100 | // XMLScanner virtual methods |
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101 | // ----------------------------------------------------------------------- |
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102 | virtual void scanReset(const InputSource& src); |
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103 | |
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104 | // ----------------------------------------------------------------------- |
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105 | // SGXMLScanner virtual methods |
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106 | // ----------------------------------------------------------------------- |
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107 | virtual bool scanStartTag(bool& gotData); |
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108 | virtual void scanEndTag(bool& gotData); |
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109 | |
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110 | // ----------------------------------------------------------------------- |
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111 | // Helper methods |
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112 | // ----------------------------------------------------------------------- |
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113 | unsigned int buildAttList |
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114 | ( |
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115 | const RefVectorOf<KVStringPair>& providedAttrs |
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116 | , const unsigned int attCount |
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117 | , XMLElementDecl* elemDecl |
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118 | , RefVectorOf<XMLAttr>& toFill |
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119 | ); |
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120 | bool laxElementValidation(QName* element, ContentLeafNameTypeVector* cv, |
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121 | const XMLContentModel* const cm, |
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122 | const unsigned int parentElemDepth); |
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123 | unsigned int rawAttrScan |
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124 | ( |
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125 | const XMLCh* const elemName |
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126 | , RefVectorOf<KVStringPair>& toFill |
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127 | , bool& isEmpty |
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128 | ); |
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129 | void updateNSMap |
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130 | ( |
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131 | const XMLCh* const attrName |
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132 | , const XMLCh* const attrValue |
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133 | ); |
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134 | unsigned int resolvePrefix |
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135 | ( |
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136 | const XMLCh* const prefix |
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137 | , const ElemStack::MapModes mode |
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138 | ); |
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139 | void resizeElemState(); |
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140 | |
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141 | void updateNSMap |
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142 | ( |
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143 | const XMLCh* const attrName |
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144 | , const XMLCh* const attrValue |
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145 | , const int colonPosition |
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146 | ); |
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147 | void resizeRawAttrColonList(); |
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148 | unsigned int resolveQNameWithColon |
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149 | ( |
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150 | const XMLCh* const qName |
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151 | , XMLBuffer& prefixBufToFill |
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152 | , const short mode |
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153 | , const int prefixColonPos |
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154 | ); |
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155 | // ----------------------------------------------------------------------- |
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156 | // Data members |
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157 | // |
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158 | // fRawAttrList |
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159 | // During the initial scan of the attributes we can only do a raw |
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160 | // scan for key/value pairs. So this vector is used to store them |
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161 | // until they can be processed (and put into fAttrList.) |
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162 | // |
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163 | // fSchemaValidator |
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164 | // The Schema validator instance. |
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165 | // |
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166 | // fSeeXsi |
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167 | // This flag indicates a schema has been seen. |
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168 | // |
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169 | // fElemState |
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170 | // fElemStateSize |
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171 | // Stores an element next state from DFA content model - used for |
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172 | // wildcard validation |
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173 | // |
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174 | // fElemNonDeclPool |
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175 | // registry for elements without decls in the grammar |
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176 | // fElemCount |
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177 | // count of the number of start tags seen so far (starts at 1). |
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178 | // Used for duplicate attribute detection/processing of required/defaulted attributes |
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179 | // fAttDefRegistry |
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180 | // mapping from XMLAttDef instances to the count of the last |
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181 | // start tag where they were utilized. |
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182 | // fUndeclaredAttrRegistryNS |
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183 | // mapping of namespaceId/localName pairs to the count of the last |
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184 | // start tag in which they occurred. |
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185 | // fPSVIAttrList |
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186 | // PSVI attribute list implementation that needs to be |
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187 | // filled when a PSVIHandler is registered |
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188 | // |
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189 | // ----------------------------------------------------------------------- |
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190 | bool fSeeXsi; |
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191 | Grammar::GrammarType fGrammarType; |
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192 | unsigned int fElemStateSize; |
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193 | unsigned int* fElemState; |
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194 | XMLBuffer fContent; |
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195 | ValueHashTableOf<XMLCh>* fEntityTable; |
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196 | RefVectorOf<KVStringPair>* fRawAttrList; |
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197 | unsigned int fRawAttrColonListSize; |
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198 | int* fRawAttrColonList; |
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199 | SchemaGrammar* fSchemaGrammar; |
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200 | SchemaValidator* fSchemaValidator; |
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201 | IdentityConstraintHandler* fICHandler; |
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202 | RefHash3KeysIdPool<SchemaElementDecl>* fElemNonDeclPool; |
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203 | unsigned int fElemCount; |
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204 | RefHashTableOf<unsigned int>* fAttDefRegistry; |
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205 | RefHash2KeysTableOf<unsigned int>* fUndeclaredAttrRegistryNS; |
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206 | PSVIAttributeList * fPSVIAttrList; |
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207 | XSModel* fModel; |
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208 | PSVIElement* fPSVIElement; |
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209 | ValueStackOf<bool>* fErrorStack; |
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210 | PSVIElemContext fPSVIElemContext; |
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211 | |
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212 | private : |
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213 | // ----------------------------------------------------------------------- |
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214 | // Unimplemented constructors and operators |
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215 | // ----------------------------------------------------------------------- |
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216 | SGXMLScanner(); |
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217 | SGXMLScanner(const SGXMLScanner&); |
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218 | SGXMLScanner& operator=(const SGXMLScanner&); |
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219 | |
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220 | // ----------------------------------------------------------------------- |
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221 | // XMLScanner virtual methods |
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222 | // ----------------------------------------------------------------------- |
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223 | virtual void scanCDSection(); |
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224 | virtual void scanCharData(XMLBuffer& toToUse); |
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225 | virtual EntityExpRes scanEntityRef |
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226 | ( |
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227 | const bool inAttVal |
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228 | , XMLCh& firstCh |
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229 | , XMLCh& secondCh |
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230 | , bool& escaped |
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231 | ); |
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232 | virtual void scanDocTypeDecl(); |
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233 | virtual void sendCharData(XMLBuffer& toSend); |
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234 | virtual InputSource* resolveSystemId(const XMLCh* const sysId |
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235 | ,const XMLCh* const pubId); |
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236 | |
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237 | // ----------------------------------------------------------------------- |
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238 | // Private helper methods |
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239 | // ----------------------------------------------------------------------- |
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240 | void commonInit(); |
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241 | void cleanUp(); |
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242 | |
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243 | bool normalizeAttValue |
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244 | ( |
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245 | const XMLAttDef* const attDef |
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246 | , const XMLCh* const attrName |
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247 | , const XMLCh* const value |
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248 | , XMLBuffer& toFill |
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249 | ); |
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250 | bool normalizeAttRawValue |
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251 | ( |
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252 | const XMLCh* const attrName |
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253 | , const XMLCh* const value |
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254 | , XMLBuffer& toFill |
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255 | ); |
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256 | unsigned int resolvePrefix |
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257 | ( |
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258 | const XMLCh* const prefix |
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259 | , XMLBuffer& uriBufToFill |
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260 | , const ElemStack::MapModes mode |
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261 | ); |
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262 | void scanRawAttrListforNameSpaces(int attCount); |
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263 | void parseSchemaLocation(const XMLCh* const schemaLocationStr); |
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264 | void resolveSchemaGrammar(const XMLCh* const loc, const XMLCh* const uri); |
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265 | bool switchGrammar(const XMLCh* const newGrammarNameSpace); |
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266 | bool anyAttributeValidation(SchemaAttDef* attWildCard, |
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267 | unsigned int uriId, |
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268 | bool& skipThisOne, |
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269 | bool& laxThisOne); |
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270 | |
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271 | // ----------------------------------------------------------------------- |
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272 | // Private scanning methods |
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273 | // ----------------------------------------------------------------------- |
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274 | bool basicAttrValueScan |
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275 | ( |
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276 | const XMLCh* const attrName |
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277 | , XMLBuffer& toFill |
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278 | ); |
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279 | bool scanAttValue |
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280 | ( |
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281 | const XMLAttDef* const attDef |
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282 | , XMLBuffer& toFill |
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283 | ); |
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284 | bool scanContent(); |
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285 | |
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286 | // ----------------------------------------------------------------------- |
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287 | // IdentityConstraints Activation methods |
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288 | // ----------------------------------------------------------------------- |
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289 | inline bool toCheckIdentityConstraint() const; |
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290 | |
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291 | // ----------------------------------------------------------------------- |
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292 | // Grammar preparsing methods |
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293 | // ----------------------------------------------------------------------- |
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294 | Grammar* loadXMLSchemaGrammar(const InputSource& src, const bool toCache = false); |
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295 | |
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296 | // ----------------------------------------------------------------------- |
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297 | // PSVI handling methods |
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298 | // ----------------------------------------------------------------------- |
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299 | void endElementPSVI(SchemaElementDecl* const elemDecl, |
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300 | DatatypeValidator* const memberDV); |
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301 | void resetPSVIElemContext(); |
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302 | }; |
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303 | |
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304 | inline const XMLCh* SGXMLScanner::getName() const |
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305 | { |
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306 | return XMLUni::fgSGXMLScanner; |
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307 | } |
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308 | |
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309 | inline bool SGXMLScanner::toCheckIdentityConstraint() const |
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310 | { |
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311 | return fValidate && fIdentityConstraintChecking && fICHandler; |
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312 | } |
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313 | |
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314 | inline Grammar::GrammarType SGXMLScanner::getCurrentGrammarType() const |
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315 | { |
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316 | return fGrammarType; |
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317 | } |
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318 | |
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319 | XERCES_CPP_NAMESPACE_END |
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320 | |
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321 | #endif |
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