| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| * $Id: XPathMatcher.cpp 568078 2007-08-21 11:43:25Z amassari $ |
| */ |
| |
| // --------------------------------------------------------------------------- |
| // Includes |
| // --------------------------------------------------------------------------- |
| #include <xercesc/validators/schema/identity/XPathMatcher.hpp> |
| #include <xercesc/validators/schema/identity/XercesXPath.hpp> |
| #include <xercesc/validators/schema/SchemaElementDecl.hpp> |
| #include <xercesc/validators/schema/SchemaAttDef.hpp> |
| #include <xercesc/validators/schema/SchemaSymbols.hpp> |
| #include <xercesc/util/RuntimeException.hpp> |
| #include <xercesc/util/OutOfMemoryException.hpp> |
| |
| XERCES_CPP_NAMESPACE_BEGIN |
| |
| typedef JanitorMemFunCall<XPathMatcher> CleanupType; |
| |
| // --------------------------------------------------------------------------- |
| // XPathMatcher: Constructors and Destructor |
| // --------------------------------------------------------------------------- |
| XPathMatcher::XPathMatcher( XercesXPath* const xpath |
| , MemoryManager* const manager) |
| : fLocationPathSize(0) |
| , fMatched(0) |
| , fNoMatchDepth(0) |
| , fCurrentStep(0) |
| , fStepIndexes(0) |
| , fLocationPaths(0) |
| , fIdentityConstraint(0) |
| , fMemoryManager(manager) |
| { |
| CleanupType cleanup(this, &XPathMatcher::cleanUp); |
| |
| try { |
| init(xpath); |
| } |
| catch(const OutOfMemoryException&) |
| { |
| cleanup.release(); |
| |
| throw; |
| } |
| |
| cleanup.release(); |
| } |
| |
| |
| XPathMatcher::XPathMatcher(XercesXPath* const xpath, |
| IdentityConstraint* const ic, |
| MemoryManager* const manager) |
| : fLocationPathSize(0) |
| , fMatched(0) |
| , fNoMatchDepth(0) |
| , fCurrentStep(0) |
| , fStepIndexes(0) |
| , fLocationPaths(0) |
| , fIdentityConstraint(ic) |
| , fMemoryManager(manager) |
| { |
| CleanupType cleanup(this, &XPathMatcher::cleanUp); |
| |
| try { |
| init(xpath); |
| } |
| catch(const OutOfMemoryException&) |
| { |
| cleanup.release(); |
| |
| throw; |
| } |
| |
| cleanup.release(); |
| } |
| |
| |
| XPathMatcher::~XPathMatcher() |
| { |
| cleanUp(); |
| } |
| |
| // --------------------------------------------------------------------------- |
| // XPathMatcher: Helper methods |
| // --------------------------------------------------------------------------- |
| void XPathMatcher::init(XercesXPath* const xpath) { |
| |
| if (xpath) { |
| |
| fLocationPaths = xpath->getLocationPaths(); |
| fLocationPathSize = (fLocationPaths ? fLocationPaths->size() : 0); |
| |
| if (fLocationPathSize) { |
| |
| fStepIndexes = new (fMemoryManager) RefVectorOf<ValueStackOf<int> >(fLocationPathSize, true, fMemoryManager); |
| fCurrentStep = (int*) fMemoryManager->allocate |
| ( |
| fLocationPathSize * sizeof(int) |
| );//new int[fLocationPathSize]; |
| fNoMatchDepth = (int*) fMemoryManager->allocate |
| ( |
| fLocationPathSize * sizeof(int) |
| );//new int[fLocationPathSize]; |
| fMatched = (int*) fMemoryManager->allocate |
| ( |
| fLocationPathSize * sizeof(int) |
| );//new int[fLocationPathSize]; |
| |
| for(unsigned int i=0; i < fLocationPathSize; i++) { |
| fStepIndexes->addElement(new (fMemoryManager) ValueStackOf<int>(8, fMemoryManager)); |
| } |
| } |
| } |
| } |
| |
| |
| // --------------------------------------------------------------------------- |
| // XPathMatcher: XMLDocumentHandler methods |
| // --------------------------------------------------------------------------- |
| void XPathMatcher::startDocumentFragment() { |
| |
| for(unsigned int i = 0; i < fLocationPathSize; i++) { |
| |
| fStepIndexes->elementAt(i)->removeAllElements(); |
| fCurrentStep[i] = 0; |
| fNoMatchDepth[i] = 0; |
| fMatched[i] = 0; |
| } |
| } |
| |
| void XPathMatcher::startElement(const XMLElementDecl& elemDecl, |
| const unsigned int urlId, |
| const XMLCh* const elemPrefix, |
| const RefVectorOf<XMLAttr>& attrList, |
| const unsigned int attrCount) { |
| |
| for (int i = 0; i < (int) fLocationPathSize; i++) { |
| |
| // push context |
| int startStep = fCurrentStep[i]; |
| fStepIndexes->elementAt(i)->push(startStep); |
| |
| // try next xpath, if not matching |
| if ((fMatched[i] & XP_MATCHED_D) == XP_MATCHED || fNoMatchDepth[i] > 0) { |
| fNoMatchDepth[i]++; |
| continue; |
| } |
| |
| if((fMatched[i] & XP_MATCHED_D) == XP_MATCHED_D) { |
| fMatched[i] = XP_MATCHED_DP; |
| } |
| |
| // consume self::node() steps |
| XercesLocationPath* locPath = fLocationPaths->elementAt(i); |
| int stepSize = locPath->getStepSize(); |
| |
| while (fCurrentStep[i] < stepSize && |
| locPath->getStep(fCurrentStep[i])->getAxisType() == XercesStep::SELF) { |
| fCurrentStep[i]++; |
| } |
| |
| if (fCurrentStep[i] == stepSize) { |
| |
| fMatched[i] = XP_MATCHED; |
| continue; |
| } |
| |
| // now if the current step is a descendant step, we let the next |
| // step do its thing; if it fails, we reset ourselves |
| // to look at this step for next time we're called. |
| // so first consume all descendants: |
| int descendantStep = fCurrentStep[i]; |
| |
| while (fCurrentStep[i] < stepSize && |
| locPath->getStep(fCurrentStep[i])->getAxisType() == XercesStep::DESCENDANT) { |
| fCurrentStep[i]++; |
| } |
| |
| bool sawDescendant = fCurrentStep[i] > descendantStep; |
| if (fCurrentStep[i] == stepSize) { |
| |
| fNoMatchDepth[i]++; |
| continue; |
| } |
| |
| // match child::... step, if haven't consumed any self::node() |
| if ((fCurrentStep[i] == startStep || fCurrentStep[i] > descendantStep) && |
| locPath->getStep(fCurrentStep[i])->getAxisType() == XercesStep::CHILD) { |
| |
| XercesStep* step = locPath->getStep(fCurrentStep[i]); |
| XercesNodeTest* nodeTest = step->getNodeTest(); |
| |
| if (nodeTest->getType() == XercesNodeTest::QNAME) { |
| |
| QName elemQName(elemPrefix, elemDecl.getElementName()->getLocalPart(), urlId, fMemoryManager); |
| |
| // if (!(*(nodeTest->getName()) == *(elemDecl.getElementName()))) { |
| if (!(*(nodeTest->getName()) == elemQName)) { |
| |
| if(fCurrentStep[i] > descendantStep) { |
| fCurrentStep[i] = descendantStep; |
| continue; |
| } |
| |
| fNoMatchDepth[i]++; |
| continue; |
| } |
| } |
| |
| fCurrentStep[i]++; |
| } |
| |
| if (fCurrentStep[i] == stepSize) { |
| |
| if (sawDescendant) { |
| |
| fCurrentStep[i] = descendantStep; |
| fMatched[i] = XP_MATCHED_D; |
| } |
| else { |
| fMatched[i] = XP_MATCHED; |
| } |
| |
| continue; |
| } |
| |
| // match attribute::... step |
| if (fCurrentStep[i] < stepSize && |
| locPath->getStep(fCurrentStep[i])->getAxisType() == XercesStep::ATTRIBUTE) { |
| |
| if (attrCount) { |
| |
| XercesNodeTest* nodeTest = locPath->getStep(fCurrentStep[i])->getNodeTest(); |
| |
| for (unsigned int attrIndex = 0; attrIndex < attrCount; attrIndex++) { |
| |
| const XMLAttr* curDef = attrList.elementAt(attrIndex); |
| |
| if (nodeTest->getType() != XercesNodeTest::QNAME || |
| (*(nodeTest->getName()) == *(curDef->getAttName()))) { |
| |
| fCurrentStep[i]++; |
| |
| if (fCurrentStep[i] == stepSize) { |
| |
| fMatched[i] = XP_MATCHED_A; |
| int j=0; |
| |
| for(; j<i && ((fMatched[j] & XP_MATCHED) != XP_MATCHED); j++) ; |
| |
| if(j == i) { |
| |
| SchemaAttDef* attDef = ((SchemaElementDecl&) elemDecl).getAttDef(curDef->getName(), curDef->getURIId()); |
| DatatypeValidator* dv = (attDef) ? attDef->getDatatypeValidator() : 0; |
| matched(curDef->getValue(), dv, false); |
| } |
| } |
| break; |
| } |
| } |
| } |
| |
| if ((fMatched[i] & XP_MATCHED) != XP_MATCHED) { |
| |
| if(fCurrentStep[i] > descendantStep) { |
| |
| fCurrentStep[i] = descendantStep; |
| continue; |
| } |
| |
| fNoMatchDepth[i]++; |
| } |
| } |
| } |
| } |
| |
| void XPathMatcher::endElement(const XMLElementDecl& elemDecl, |
| const XMLCh* const elemContent) { |
| |
| for(int i = 0; i < (int) fLocationPathSize; i++) { |
| |
| // go back a step |
| fCurrentStep[i] = fStepIndexes->elementAt(i)->pop(); |
| |
| // don't do anything, if not matching |
| if (fNoMatchDepth[i] > 0) { |
| fNoMatchDepth[i]--; |
| } |
| // signal match, if appropriate |
| else { |
| |
| int j=0; |
| for(; j<i && ((fMatched[j] & XP_MATCHED) != XP_MATCHED); j++) ; |
| |
| if (j < i || (fMatched[j] == 0) |
| || ((fMatched[j] & XP_MATCHED_A) == XP_MATCHED_A)) |
| continue; |
| |
| DatatypeValidator* dv = ((SchemaElementDecl*) &elemDecl)->getDatatypeValidator(); |
| bool isNillable = (((SchemaElementDecl *) &elemDecl)->getMiscFlags() & SchemaSymbols::XSD_NILLABLE) != 0; |
| |
| matched(elemContent, dv, isNillable); |
| fMatched[i] = 0; |
| } |
| } |
| } |
| |
| |
| // --------------------------------------------------------------------------- |
| // XPathMatcher: Match methods |
| // --------------------------------------------------------------------------- |
| int XPathMatcher::isMatched() { |
| |
| // xpath has been matched if any one of the members of the union have matched. |
| for (int i=0; i < (int) fLocationPathSize; i++) { |
| if (((fMatched[i] & XP_MATCHED) == XP_MATCHED) |
| && ((fMatched[i] & XP_MATCHED_DP) != XP_MATCHED_DP)) |
| return fMatched[i]; |
| } |
| |
| return 0; |
| } |
| |
| void XPathMatcher::matched(const XMLCh* const, |
| DatatypeValidator* const, |
| const bool) { |
| return; |
| } |
| |
| |
| // --------------------------------------------------------------------------- |
| // XPathMatcher: Match methods |
| // --------------------------------------------------------------------------- |
| int XPathMatcher::getInitialDepth() const |
| { |
| ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Regex_NotSupported, fMemoryManager); |
| return 0; // to make some compilers happy |
| } |
| |
| XERCES_CPP_NAMESPACE_END |
| |
| /** |
| * End of file XPathMatcher.cpp |
| */ |
| |
