File	Doc	Category	Size	Date	Package
XMLVersionDetector.java	API Doc	Apache Xerces 3.0.1	10163	Fri Sep 14 20:33:56 BST 2007	org.apache.xerces.impl

XMLVersionDetector

• java.lang.Object

Fields Summary
private static final char[]	XML11_VERSION
protected static final String	SYMBOL_TABLE Property identifier: symbol table.
protected static final String	ERROR_REPORTER Property identifier: error reporter.
protected static final String	ENTITY_MANAGER Property identifier: entity manager.
protected static final String	fVersionSymbol Symbol: "version".
protected static final String	fXMLSymbol
protected org.apache.xerces.util.SymbolTable	fSymbolTable Symbol table.
protected XMLErrorReporter	fErrorReporter Error reporter.
protected XMLEntityManager	fEntityManager Entity manager.
protected String	fEncoding
private final char[]	fExpectedVersionString

Constructors Summary

Methods Summary
public short	determineDocVersion(org.apache.xerces.xni.parser.XMLInputSource inputSource) This methods scans the XML declaration to find out the version (and provisional encoding) of the document. The scanning is doing using XML 1.1 scanner. param inputSource return short - Constants.XML_VERSION_1_1 if document version 1.1, otherwise Constants.XML_VERSION_1_0 throws IOException fEncoding = fEntityManager.setupCurrentEntity(fXMLSymbol, inputSource, false, true); // Must use XML 1.0 scanner to handle whitespace correctly // in the XML declaration. fEntityManager.setScannerVersion(Constants.XML_VERSION_1_0); XMLEntityScanner scanner = fEntityManager.getEntityScanner(); try { if (!scanner.skipString("<?xml")) { // definitely not a well-formed 1.1 doc! return Constants.XML_VERSION_1_0; } if (!scanner.skipDeclSpaces()) { fixupCurrentEntity(fEntityManager, fExpectedVersionString, 5); return Constants.XML_VERSION_1_0; } if (!scanner.skipString("version")) { fixupCurrentEntity(fEntityManager, fExpectedVersionString, 6); return Constants.XML_VERSION_1_0; } scanner.skipDeclSpaces(); // Check if the next character is '='. If it is then consume it. if (scanner.peekChar() != '=") { fixupCurrentEntity(fEntityManager, fExpectedVersionString, 13); return Constants.XML_VERSION_1_0; } scanner.scanChar(); scanner.skipDeclSpaces(); int quoteChar = scanner.scanChar(); fExpectedVersionString[14] = (char) quoteChar; for (int versionPos = 0; versionPos < XML11_VERSION.length; versionPos++) { fExpectedVersionString[15 + versionPos] = (char) scanner.scanChar(); } // REVISIT: should we check whether this equals quoteChar? fExpectedVersionString[18] = (char) scanner.scanChar(); fixupCurrentEntity(fEntityManager, fExpectedVersionString, 19); int matched = 0; for (; matched < XML11_VERSION.length; matched++) { if (fExpectedVersionString[15 + matched] != XML11_VERSION[matched]) break; } return (matched == XML11_VERSION.length) ? Constants.XML_VERSION_1_1 : Constants.XML_VERSION_1_0; } // encoding errors catch (MalformedByteSequenceException e) { fErrorReporter.reportError(e.getDomain(), e.getKey(), e.getArguments(), XMLErrorReporter.SEVERITY_FATAL_ERROR, e); return Constants.XML_VERSION_ERROR; } catch (CharConversionException e) { fErrorReporter.reportError( XMLMessageFormatter.XML_DOMAIN, "CharConversionFailure", null, XMLErrorReporter.SEVERITY_FATAL_ERROR, e); return Constants.XML_VERSION_ERROR; } // premature end of file catch (EOFException e) { fErrorReporter.reportError( XMLMessageFormatter.XML_DOMAIN, "PrematureEOF", null, XMLErrorReporter.SEVERITY_FATAL_ERROR); return Constants.XML_VERSION_ERROR; }
private void	fixupCurrentEntity(XMLEntityManager manager, char[] scannedChars, int length) XMLEntityManager.ScannedEntity currentEntity = manager.getCurrentEntity(); if(currentEntity.count-currentEntity.position+length > currentEntity.ch.length) { //resize array; this case is hard to imagine... char[] tempCh = currentEntity.ch; currentEntity.ch = new char[length+currentEntity.count-currentEntity.position+1]; System.arraycopy(tempCh, 0, currentEntity.ch, 0, tempCh.length); } if(currentEntity.position < length) { // have to move sensitive stuff out of the way... System.arraycopy(currentEntity.ch, currentEntity.position, currentEntity.ch, length, currentEntity.count-currentEntity.position); currentEntity.count += length-currentEntity.position; } else { // have to reintroduce some whitespace so this parses: for(int i=length; i<currentEntity.position; i++) currentEntity.ch[i]=' "; } // prepend contents... System.arraycopy(scannedChars, 0, currentEntity.ch, 0, length); currentEntity.position = 0; currentEntity.baseCharOffset = 0; currentEntity.startPosition = 0; currentEntity.columnNumber = currentEntity.lineNumber = 1;
public void	reset(org.apache.xerces.xni.parser.XMLComponentManager componentManager) param componentManager The component manager. throws XNIException Throws exception if required features and properties cannot be found. // Xerces properties fSymbolTable = (SymbolTable)componentManager.getProperty(SYMBOL_TABLE); fErrorReporter = (XMLErrorReporter)componentManager.getProperty(ERROR_REPORTER); fEntityManager = (XMLEntityManager)componentManager.getProperty(ENTITY_MANAGER); for(int i=14; i<fExpectedVersionString.length; i++ ) fExpectedVersionString[i] = ' ";
public void	startDocumentParsing(XMLEntityHandler scanner, short version) Reset the reference to the appropriate scanner given the version of the document and start document scanning. param scanner - the scanner to use param version - the version of the document (XML 1.1 or XML 1.0). if (version == Constants.XML_VERSION_1_0){ fEntityManager.setScannerVersion(Constants.XML_VERSION_1_0); } else { fEntityManager.setScannerVersion(Constants.XML_VERSION_1_1); } // Make sure the locator used by the error reporter is the current entity scanner. fErrorReporter.setDocumentLocator(fEntityManager.getEntityScanner()); // Note: above we reset fEntityScanner in the entity manager, thus in startEntity // in each scanner fEntityScanner field must be reset to reflect the change. // fEntityManager.setEntityHandler(scanner); scanner.startEntity(fXMLSymbol, fEntityManager.getCurrentResourceIdentifier(), fEncoding, null);