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Validate XML with DTD/XML Schema by using xml-model
See #633 Signed-off-by: azerr <[email protected]>
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| * Contributors: | ||
| * Angelo Zerr <[email protected]> - initial API and implementation | ||
| */ | ||
| package org.eclipse.lemminx.services.extensions.xerces; | ||
| package org.eclipse.lemminx.extensions.xerces; | ||
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| import java.util.List; | ||
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135 changes: 135 additions & 0 deletions
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...nx/src/main/java/org/eclipse/lemminx/extensions/xerces/xmlmodel/XMLModelDTDValidator.java
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| package org.eclipse.lemminx.extensions.xerces.xmlmodel; | ||
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| import java.io.IOException; | ||
| import java.lang.reflect.Field; | ||
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| import org.apache.xerces.impl.Constants; | ||
| import org.apache.xerces.impl.XMLEntityManager; | ||
| import org.apache.xerces.impl.dtd.DTDGrammar; | ||
| import org.apache.xerces.impl.dtd.XMLDTDDescription; | ||
| import org.apache.xerces.impl.dtd.XMLDTDLoader; | ||
| import org.apache.xerces.impl.dtd.XMLDTDValidator; | ||
| import org.apache.xerces.util.SymbolTable; | ||
| import org.apache.xerces.xni.Augmentations; | ||
| import org.apache.xerces.xni.QName; | ||
| import org.apache.xerces.xni.XMLAttributes; | ||
| import org.apache.xerces.xni.XMLLocator; | ||
| import org.apache.xerces.xni.XNIException; | ||
| import org.apache.xerces.xni.parser.XMLComponentManager; | ||
| import org.apache.xerces.xni.parser.XMLConfigurationException; | ||
| import org.apache.xerces.xni.parser.XMLDTDScanner; | ||
| import org.apache.xerces.xni.parser.XMLInputSource; | ||
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| public class XMLModelDTDValidator extends XMLDTDValidator implements XMLModelValidator { | ||
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| /** Property identifier: entity manager. */ | ||
| protected static final String ENTITY_MANAGER = Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_MANAGER_PROPERTY; | ||
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| protected static final String DTD_SCANNER = Constants.XERCES_PROPERTY_PREFIX + Constants.DTD_SCANNER_PROPERTY; | ||
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| private String href; | ||
| private boolean firstElement; | ||
| private XMLLocator locator; | ||
| private XMLDTDScanner fDTDScanner; | ||
| private XMLEntityManager fEntityManager; | ||
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| public XMLModelDTDValidator() { | ||
| firstElement = true; | ||
| fDTDValidation = true; | ||
| } | ||
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| @Override | ||
| public void setHref(String href) { | ||
| this.href = href; | ||
| } | ||
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| @Override | ||
| public void setLocator(XMLLocator locator) { | ||
| this.locator = locator; | ||
| } | ||
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| @Override | ||
| public void startElement(QName element, XMLAttributes attributes, Augmentations augs) throws XNIException { | ||
| if (firstElement) { | ||
| QName fRootElement = getRootElement(); | ||
| String rootElement = element.localpart; | ||
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| // save root element state | ||
| fSeenDoctypeDecl = true; | ||
| fRootElement.setValues(null, rootElement, rootElement, null); | ||
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| String eid = null; | ||
| try { | ||
| eid = XMLEntityManager.expandSystemId(href, locator.getExpandedSystemId(), false); | ||
| } catch (java.io.IOException e) { | ||
| } | ||
| XMLDTDDescription grammarDesc = new XMLDTDDescription(null, href, locator.getExpandedSystemId(), eid, | ||
| rootElement); | ||
| // fDTDDescription.setValues(fDoctypePublicId, fDoctypeSystemId, null, null); | ||
| // fDTDDescription.setRootName(fDoctypeName); | ||
| // try { | ||
| // XMLInputSource xmlInputSource = | ||
| // fEntityManager.resolveEntity(grammarDesc); | ||
| // fDTDScanner.setInputSource(xmlInputSource); | ||
| // } catch (IOException e) { | ||
| // // TODO Auto-generated catch block | ||
| // e.printStackTrace(); | ||
| // } | ||
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| fDTDGrammar = fGrammarBucket.getGrammar(grammarDesc); | ||
| if (fDTDGrammar == null) { | ||
| // give grammar pool a chance... | ||
| // | ||
| // Do not bother checking the pool if no public or system identifier was | ||
| // provided. | ||
| // Since so many different DTDs have roots in common, using only a root name as | ||
| // the | ||
| // key may cause an unexpected grammar to be retrieved from the grammar pool. | ||
| // This scenario | ||
| // would occur when an ExternalSubsetResolver has been queried and the | ||
| // XMLInputSource returned contains an input stream but no external identifier. | ||
| // This can never happen when the instance document specified a DOCTYPE. -- | ||
| // mrglavas | ||
| if (fGrammarPool != null && (href != null)) { | ||
| fDTDGrammar = (DTDGrammar) fGrammarPool.retrieveGrammar(grammarDesc); | ||
| } | ||
| } | ||
| if (fDTDGrammar == null) { | ||
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| XMLDTDLoader loader = new XMLDTDLoader(fSymbolTable, fGrammarPool); | ||
| loader.setEntityResolver(fEntityManager); | ||
| try { | ||
| fDTDGrammar = (DTDGrammar) loader.loadGrammar(new XMLInputSource(null, eid, null)); | ||
| } catch (IOException e) { | ||
| // TODO Auto-generated catch block | ||
| e.printStackTrace(); | ||
| } | ||
| } else { | ||
| // we've found a cached one;so let's make sure not to read | ||
| // any external subset! | ||
| fValidationManager.setCachedDTD(true); | ||
| } | ||
| firstElement = false; | ||
| } | ||
| super.startElement(element, attributes, augs); | ||
| } | ||
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| private QName getRootElement() { | ||
| try { | ||
| Field f = XMLDTDValidator.class.getDeclaredField("fRootElement"); | ||
| f.setAccessible(true); | ||
| QName fRootElement = (QName) f.get(this); | ||
| return fRootElement; | ||
| } catch (Exception e) { | ||
| return null; | ||
| } | ||
| } | ||
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| @Override | ||
| public void reset(XMLComponentManager componentManager) throws XMLConfigurationException { | ||
| fDTDScanner = (XMLDTDScanner) componentManager.getProperty(DTD_SCANNER); | ||
| fEntityManager = (XMLEntityManager) componentManager.getProperty(ENTITY_MANAGER); | ||
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| super.reset(componentManager); | ||
| } | ||
| } |
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