- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 1999-2002 The Apache Software Foundation.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation and was
- * originally based on software copyright (c) 2002, International
- * Business Machines, Inc., http://www.apache.org. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-
- package com.sun.org.apache.xerces.internal.impl;
-
- import java.io.IOException;
-
- import com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidatorFilter;
- import com.sun.org.apache.xerces.internal.impl.msg.XMLMessageFormatter;
- import com.sun.org.apache.xerces.internal.util.XMLAttributesImpl;
- import com.sun.org.apache.xerces.internal.util.XMLSymbols;
- import com.sun.org.apache.xerces.internal.xni.NamespaceContext;
- import com.sun.org.apache.xerces.internal.xni.QName;
- import com.sun.org.apache.xerces.internal.xni.XMLDocumentHandler;
- import com.sun.org.apache.xerces.internal.xni.XNIException;
- import com.sun.org.apache.xerces.internal.xni.parser.XMLComponentManager;
- import com.sun.org.apache.xerces.internal.xni.parser.XMLConfigurationException;
- import com.sun.org.apache.xerces.internal.xni.parser.XMLDocumentSource;
-
- /**
- * The scanner acts as the source for the document
- * information which is communicated to the document handler.
- *
- * This class scans an XML document, checks if document has a DTD, and if
- * DTD is not found the scanner will remove the DTD Validator from the pipeline and perform
- * namespace binding.
- *
- * Note: This scanner should only be used when the namespace processing is on!
- *
- * <p>
- * This component requires the following features and properties from the
- * component manager that uses it:
- * <ul>
- * <li>http://xml.org/sax/features/namespaces {true} -- if the value of this
- * feature is set to false this scanner must not be used.</li>
- * <li>http://xml.org/sax/features/validation</li>
- * <li>http://apache.org/xml/features/nonvalidating/load-external-dtd</li>
- * <li>http://apache.org/xml/features/scanner/notify-char-refs</li>
- * <li>http://apache.org/xml/features/scanner/notify-builtin-refs</li>
- * <li>http://apache.org/xml/properties/internal/symbol-table</li>
- * <li>http://apache.org/xml/properties/internal/error-reporter</li>
- * <li>http://apache.org/xml/properties/internal/entity-manager</li>
- * <li>http://apache.org/xml/properties/internal/dtd-scanner</li>
- * </ul>
- *
- * @author Elena Litani, IBM
- *
- * @version $Id: XMLNSDocumentScannerImpl.java,v 1.23 2004/04/30 15:36:38 mrglavas Exp $
- */
- public class XMLNSDocumentScannerImpl
- extends XMLDocumentScannerImpl {
-
- /** If is true, the dtd validator is no longer in the pipeline
- * and the scanner should bind namespaces */
- protected boolean fBindNamespaces;
-
- /** If validating parser, make sure we report an error in the
- * scanner if DTD grammar is missing.*/
- protected boolean fPerformValidation;
-
- // private data
- //
-
- /** DTD validator */
- private XMLDTDValidatorFilter fDTDValidator;
-
- /**
- * Saw spaces after element name or between attributes.
- *
- * This is reserved for the case where scanning of a start element spans
- * several methods, as is the case when scanning the start of a root element
- * where a DTD external subset may be read after scanning the element name.
- */
- private boolean fSawSpace;
-
-
- /**
- * The scanner is responsible for removing DTD validator
- * from the pipeline if it is not needed.
- *
- * @param previous The filter component before DTDValidator
- * @param dtdValidator
- * The DTDValidator
- * @param next The documentHandler after the DTDValidator
- */
- public void setDTDValidator(XMLDTDValidatorFilter dtd){
- fDTDValidator = dtd;
- }
-
- /**
- * Scans a start element. This method will handle the binding of
- * namespace information and notifying the handler of the start
- * of the element.
- * <p>
- * <pre>
- * [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
- * [40] STag ::= '<' Name (S Attribute)* S? '>'
- * </pre>
- * <p>
- * <strong>Note:</strong> This method assumes that the leading
- * '<' character has been consumed.
- * <p>
- * <strong>Note:</strong> This method uses the fElementQName and
- * fAttributes variables. The contents of these variables will be
- * destroyed. The caller should copy important information out of
- * these variables before calling this method.
- *
- * @return True if element is empty. (i.e. It matches
- * production [44].
- */
- protected boolean scanStartElement()
- throws IOException, XNIException {
- if (DEBUG_CONTENT_SCANNING) System.out.println(">>> scanStartElementNS()");
-
- // Note: namespace processing is on by default
- fEntityScanner.scanQName(fElementQName);
- // REVISIT - [Q] Why do we need this temp variable? -- mrglavas
- String rawname = fElementQName.rawname;
- if (fBindNamespaces) {
- fNamespaceContext.pushContext();
- if (fScannerState == SCANNER_STATE_ROOT_ELEMENT) {
- if (fPerformValidation) {
- fErrorReporter.reportError(XMLMessageFormatter.XML_DOMAIN,
- "MSG_GRAMMAR_NOT_FOUND",
- new Object[]{ rawname},
- XMLErrorReporter.SEVERITY_ERROR);
-
- if (fDoctypeName == null || !fDoctypeName.equals(rawname)) {
- fErrorReporter.reportError( XMLMessageFormatter.XML_DOMAIN,
- "RootElementTypeMustMatchDoctypedecl",
- new Object[]{fDoctypeName, rawname},
- XMLErrorReporter.SEVERITY_ERROR);
- }
- }
- }
- }
-
- // push element stack
- fCurrentElement = fElementStack.pushElement(fElementQName);
-
- // attributes
- boolean empty = false;
- fAttributes.removeAllAttributes();
- do {
- // spaces
- boolean sawSpace = fEntityScanner.skipSpaces();
-
- // end tag?
- int c = fEntityScanner.peekChar();
- if (c == '>') {
- fEntityScanner.scanChar();
- break;
- }
- else if (c == '/') {
- fEntityScanner.scanChar();
- if (!fEntityScanner.skipChar('>')) {
- reportFatalError("ElementUnterminated",
- new Object[]{rawname});
- }
- empty = true;
- break;
- }
- else if (!isValidNameStartChar(c) || !sawSpace) {
- reportFatalError("ElementUnterminated", new Object[]{rawname});
- }
-
- // attributes
- scanAttribute(fAttributes);
-
- } while (true);
-
- if (fBindNamespaces) {
- // REVISIT: is it required? forbit xmlns prefix for element
- if (fElementQName.prefix == XMLSymbols.PREFIX_XMLNS) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "ElementXMLNSPrefix",
- new Object[]{fElementQName.rawname},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
-
- // bind the element
- String prefix = fElementQName.prefix != null
- ? fElementQName.prefix : XMLSymbols.EMPTY_STRING;
- // assign uri to the element
- fElementQName.uri = fNamespaceContext.getURI(prefix);
- // make sure that object in the element stack is updated as well
- fCurrentElement.uri = fElementQName.uri;
-
- if (fElementQName.prefix == null && fElementQName.uri != null) {
- fElementQName.prefix = XMLSymbols.EMPTY_STRING;
- // making sure that the object in the element stack is updated too.
- fCurrentElement.prefix = XMLSymbols.EMPTY_STRING;
- }
- if (fElementQName.prefix != null && fElementQName.uri == null) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "ElementPrefixUnbound",
- new Object[]{fElementQName.prefix, fElementQName.rawname},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
-
- // bind attributes (xmlns are already bound bellow)
- int length = fAttributes.getLength();
- // fLength = 0; //initialize structure
- for (int i = 0; i < length; i++) {
- fAttributes.getName(i, fAttributeQName);
-
- String aprefix = fAttributeQName.prefix != null
- ? fAttributeQName.prefix : XMLSymbols.EMPTY_STRING;
- String uri = fNamespaceContext.getURI(aprefix);
- // REVISIT: try removing the first "if" and see if it is faster.
- //
- if (fAttributeQName.uri != null && fAttributeQName.uri == uri) {
- // checkDuplicates(fAttributeQName, fAttributes);
- continue;
- }
- if (aprefix != XMLSymbols.EMPTY_STRING) {
- fAttributeQName.uri = uri;
- if (uri == null) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "AttributePrefixUnbound",
- new Object[]{fElementQName.rawname,fAttributeQName.rawname,aprefix},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
- fAttributes.setURI(i, uri);
- // checkDuplicates(fAttributeQName, fAttributes);
- }
- }
-
- if (length > 1) {
- QName name = fAttributes.checkDuplicatesNS();
- if (name != null) {
- if (name.uri != null) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "AttributeNSNotUnique",
- new Object[]{fElementQName.rawname, name.localpart, name.uri},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
- else {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "AttributeNotUnique",
- new Object[]{fElementQName.rawname, name.rawname},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
- }
- }
- }
-
-
- // call handler
- if (fDocumentHandler != null) {
- if (empty) {
-
- //decrease the markup depth..
- fMarkupDepth--;
-
- // check that this element was opened in the same entity
- if (fMarkupDepth < fEntityStack[fEntityDepth - 1]) {
- reportFatalError("ElementEntityMismatch",
- new Object[]{fCurrentElement.rawname});
- }
-
- fDocumentHandler.emptyElement(fElementQName, fAttributes, null);
-
- if (fBindNamespaces) {
- fNamespaceContext.popContext();
- }
- //pop the element off the stack..
- fElementStack.popElement(fElementQName);
- } else {
- fDocumentHandler.startElement(fElementQName, fAttributes, null);
- }
- }
-
- if (DEBUG_CONTENT_SCANNING) System.out.println("<<< scanStartElement(): "+empty);
- return empty;
-
- } // scanStartElement():boolean
-
- /**
- * Scans the name of an element in a start or empty tag.
- *
- * @see #scanStartElement()
- */
- protected void scanStartElementName ()
- throws IOException, XNIException {
- // Note: namespace processing is on by default
- fEntityScanner.scanQName(fElementQName);
- // Must skip spaces here because the DTD scanner
- // would consume them at the end of the external subset.
- fSawSpace = fEntityScanner.skipSpaces();
- } // scanStartElementName()
-
- /**
- * Scans the remainder of a start or empty tag after the element name.
- *
- * @see #scanStartElement
- * @return True if element is empty.
- */
- protected boolean scanStartElementAfterName()
- throws IOException, XNIException {
-
- // REVISIT - [Q] Why do we need this temp variable? -- mrglavas
- String rawname = fElementQName.rawname;
- if (fBindNamespaces) {
- fNamespaceContext.pushContext();
- if (fScannerState == SCANNER_STATE_ROOT_ELEMENT) {
- if (fPerformValidation) {
- fErrorReporter.reportError(XMLMessageFormatter.XML_DOMAIN,
- "MSG_GRAMMAR_NOT_FOUND",
- new Object[]{ rawname},
- XMLErrorReporter.SEVERITY_ERROR);
-
- if (fDoctypeName == null || !fDoctypeName.equals(rawname)) {
- fErrorReporter.reportError( XMLMessageFormatter.XML_DOMAIN,
- "RootElementTypeMustMatchDoctypedecl",
- new Object[]{fDoctypeName, rawname},
- XMLErrorReporter.SEVERITY_ERROR);
- }
- }
- }
- }
-
- // push element stack
- fCurrentElement = fElementStack.pushElement(fElementQName);
-
- // attributes
- boolean empty = false;
- fAttributes.removeAllAttributes();
- do {
-
- // end tag?
- int c = fEntityScanner.peekChar();
- if (c == '>') {
- fEntityScanner.scanChar();
- break;
- }
- else if (c == '/') {
- fEntityScanner.scanChar();
- if (!fEntityScanner.skipChar('>')) {
- reportFatalError("ElementUnterminated",
- new Object[]{rawname});
- }
- empty = true;
- break;
- }
- else if (!isValidNameStartChar(c) || !fSawSpace) {
- reportFatalError("ElementUnterminated", new Object[]{rawname});
- }
-
- // attributes
- scanAttribute(fAttributes);
-
- // spaces
- fSawSpace = fEntityScanner.skipSpaces();
-
- } while (true);
-
- if (fBindNamespaces) {
- // REVISIT: is it required? forbit xmlns prefix for element
- if (fElementQName.prefix == XMLSymbols.PREFIX_XMLNS) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "ElementXMLNSPrefix",
- new Object[]{fElementQName.rawname},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
-
- // bind the element
- String prefix = fElementQName.prefix != null
- ? fElementQName.prefix : XMLSymbols.EMPTY_STRING;
- // assign uri to the element
- fElementQName.uri = fNamespaceContext.getURI(prefix);
- // make sure that object in the element stack is updated as well
- fCurrentElement.uri = fElementQName.uri;
-
- if (fElementQName.prefix == null && fElementQName.uri != null) {
- fElementQName.prefix = XMLSymbols.EMPTY_STRING;
- // making sure that the object in the element stack is updated too.
- fCurrentElement.prefix = XMLSymbols.EMPTY_STRING;
- }
- if (fElementQName.prefix != null && fElementQName.uri == null) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "ElementPrefixUnbound",
- new Object[]{fElementQName.prefix, fElementQName.rawname},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
-
- // bind attributes (xmlns are already bound bellow)
- int length = fAttributes.getLength();
- // fLength = 0; //initialize structure
- for (int i = 0; i < length; i++) {
- fAttributes.getName(i, fAttributeQName);
-
- String aprefix = fAttributeQName.prefix != null
- ? fAttributeQName.prefix : XMLSymbols.EMPTY_STRING;
- String uri = fNamespaceContext.getURI(aprefix);
- // REVISIT: try removing the first "if" and see if it is faster.
- //
- if (fAttributeQName.uri != null && fAttributeQName.uri == uri) {
- // checkDuplicates(fAttributeQName, fAttributes);
- continue;
- }
- if (aprefix != XMLSymbols.EMPTY_STRING) {
- fAttributeQName.uri = uri;
- if (uri == null) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "AttributePrefixUnbound",
- new Object[]{fElementQName.rawname,fAttributeQName.rawname,aprefix},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
- fAttributes.setURI(i, uri);
- // checkDuplicates(fAttributeQName, fAttributes);
- }
- }
-
- if (length > 1) {
- QName name = fAttributes.checkDuplicatesNS();
- if (name != null) {
- if (name.uri != null) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "AttributeNSNotUnique",
- new Object[]{fElementQName.rawname, name.localpart, name.uri},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
- else {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "AttributeNotUnique",
- new Object[]{fElementQName.rawname, name.rawname},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
- }
- }
- }
-
-
- // call handler
- if (fDocumentHandler != null) {
- if (empty) {
-
- //decrease the markup depth..
- fMarkupDepth--;
-
- // check that this element was opened in the same entity
- if (fMarkupDepth < fEntityStack[fEntityDepth - 1]) {
- reportFatalError("ElementEntityMismatch",
- new Object[]{fCurrentElement.rawname});
- }
-
- fDocumentHandler.emptyElement(fElementQName, fAttributes, null);
-
- if (fBindNamespaces) {
- fNamespaceContext.popContext();
- }
- //pop the element off the stack..
- fElementStack.popElement(fElementQName);
- } else {
- fDocumentHandler.startElement(fElementQName, fAttributes, null);
- }
- }
-
- if (DEBUG_CONTENT_SCANNING) System.out.println("<<< scanStartElementAfterName(): "+empty);
- return empty;
- } // scanStartElementAfterName()
-
- /**
- * Scans an attribute.
- * <p>
- * <pre>
- * [41] Attribute ::= Name Eq AttValue
- * </pre>
- * <p>
- * <strong>Note:</strong> This method assumes that the next
- * character on the stream is the first character of the attribute
- * name.
- * <p>
- * <strong>Note:</strong> This method uses the fAttributeQName and
- * fQName variables. The contents of these variables will be
- * destroyed.
- *
- * @param attributes The attributes list for the scanned attribute.
- */
- protected void scanAttribute(XMLAttributesImpl attributes)
- throws IOException, XNIException {
- if (DEBUG_CONTENT_SCANNING) System.out.println(">>> scanAttribute()");
-
- // name
- fEntityScanner.scanQName(fAttributeQName);
-
- // equals
- fEntityScanner.skipSpaces();
- if (!fEntityScanner.skipChar('=')) {
- reportFatalError("EqRequiredInAttribute",
- new Object[]{fCurrentElement.rawname,fAttributeQName.rawname});
- }
- fEntityScanner.skipSpaces();
-
- // content
- int attrIndex;
-
- if (fBindNamespaces) {
- attrIndex = attributes.getLength();
- attributes.addAttributeNS(fAttributeQName, XMLSymbols.fCDATASymbol, null);
- }
- else {
- int oldLen = attributes.getLength();
- attrIndex = attributes.addAttribute(fAttributeQName, XMLSymbols.fCDATASymbol, null);
-
- // WFC: Unique Att Spec
- if (oldLen == attributes.getLength()) {
- reportFatalError("AttributeNotUnique",
- new Object[]{fCurrentElement.rawname,
- fAttributeQName.rawname});
- }
- }
-
- //REVISIT: one more case needs to be included: external PE and standalone is no
- boolean isVC = fHasExternalDTD && !fStandalone;
-
- scanAttributeValue(this.fTempString, fTempString2,
- fAttributeQName.rawname, isVC,
- fCurrentElement.rawname);
- String value = fTempString.toString();
- attributes.setValue(attrIndex, value);
- attributes.setNonNormalizedValue(attrIndex, fTempString2.toString());
- attributes.setSpecified(attrIndex, true);
-
- // record namespace declarations if any.
- if (fBindNamespaces) {
-
- String localpart = fAttributeQName.localpart;
- String prefix = fAttributeQName.prefix != null
- ? fAttributeQName.prefix : XMLSymbols.EMPTY_STRING;
- // when it's of form xmlns="..." or xmlns:prefix="...",
- // it's a namespace declaration. but prefix:xmlns="..." isn't.
- if (prefix == XMLSymbols.PREFIX_XMLNS ||
- prefix == XMLSymbols.EMPTY_STRING && localpart == XMLSymbols.PREFIX_XMLNS) {
-
- // get the internalized value of this attribute
- String uri = fSymbolTable.addSymbol(value);
-
- // 1. "xmlns" can't be bound to any namespace
- if (prefix == XMLSymbols.PREFIX_XMLNS && localpart == XMLSymbols.PREFIX_XMLNS) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "CantBindXMLNS",
- new Object[]{fAttributeQName},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
-
- // 2. the namespace for "xmlns" can't be bound to any prefix
- if (uri == NamespaceContext.XMLNS_URI) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "CantBindXMLNS",
- new Object[]{fAttributeQName},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
-
- // 3. "xml" can't be bound to any other namespace than it's own
- if (localpart == XMLSymbols.PREFIX_XML) {
- if (uri != NamespaceContext.XML_URI) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "CantBindXML",
- new Object[]{fAttributeQName},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
- }
- // 4. the namespace for "xml" can't be bound to any other prefix
- else {
- if (uri ==NamespaceContext.XML_URI) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "CantBindXML",
- new Object[]{fAttributeQName},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
- }
-
- prefix = localpart != XMLSymbols.PREFIX_XMLNS ? localpart : XMLSymbols.EMPTY_STRING;
-
- // http://www.w3.org/TR/1999/REC-xml-names-19990114/#dt-prefix
- // We should only report an error if there is a prefix,
- // that is, the local part is not "xmlns". -SG
- if (uri == XMLSymbols.EMPTY_STRING && localpart != XMLSymbols.PREFIX_XMLNS) {
- fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
- "EmptyPrefixedAttName",
- new Object[]{fAttributeQName},
- XMLErrorReporter.SEVERITY_FATAL_ERROR);
- }
-
- // declare prefix in context
- fNamespaceContext.declarePrefix(prefix, uri.length() != 0 ? uri : null);
- // bind namespace attribute to a namespace
- attributes.setURI(attrIndex, fNamespaceContext.getURI(XMLSymbols.PREFIX_XMLNS));
-
- }
- else {
- // attempt to bind attribute
- if (fAttributeQName.prefix != null) {
- attributes.setURI(attrIndex, fNamespaceContext.getURI(fAttributeQName.prefix));
- }
- }
- }
-
- if (DEBUG_CONTENT_SCANNING) System.out.println("<<< scanAttribute()");
- } // scanAttribute(XMLAttributes)
-
-
-
- /**
- * Scans an end element.
- * <p>
- * <pre>
- * [42] ETag ::= '</' Name S? '>'
- * </pre>
- * <p>
- * <strong>Note:</strong> This method uses the fElementQName variable.
- * The contents of this variable will be destroyed. The caller should
- * copy the needed information out of this variable before calling
- * this method.
- *
- * @return The element depth.
- */
- protected int scanEndElement() throws IOException, XNIException {
- if (DEBUG_CONTENT_SCANNING) System.out.println(">>> scanEndElement()");
-
- // pop context
- fElementStack.popElement(fElementQName) ;
-
- // Take advantage of the fact that next string _should_ be "fElementQName.rawName",
- //In scanners most of the time is consumed on checks done for XML characters, we can
- // optimize on it and avoid the checks done for endElement,
- //we will also avoid symbol table lookup - neeraj.bajaj@sun.com
-
- // this should work both for namespace processing true or false...
-
- //REVISIT: if the string is not the same as expected.. we need to do better error handling..
- //We can skip this for now... In any case if the string doesn't match -- document is not well formed.
- if (!fEntityScanner.skipString(fElementQName.rawname)) {
- reportFatalError("ETagRequired", new Object[]{fElementQName.rawname});
- }
-
- // end
- fEntityScanner.skipSpaces();
- if (!fEntityScanner.skipChar('>')) {
- reportFatalError("ETagUnterminated",
- new Object[]{fElementQName.rawname});
- }
- fMarkupDepth--;
-
- //we have increased the depth for two markup "<" characters
- fMarkupDepth--;
-
- // check that this element was opened in the same entity
- if (fMarkupDepth < fEntityStack[fEntityDepth - 1]) {
- reportFatalError("ElementEntityMismatch",
- new Object[]{fCurrentElement.rawname});
- }
-
- // call handler
- if (fDocumentHandler != null ) {
-
- fDocumentHandler.endElement(fElementQName, null);
- if (fBindNamespaces) {
- fNamespaceContext.popContext();
- }
-
- }
-
- return fMarkupDepth;
-
- } // scanEndElement():int
-
-
- public void reset(XMLComponentManager componentManager)
- throws XMLConfigurationException {
-
- super.reset(componentManager);
- fPerformValidation = false;
- fBindNamespaces = false;
- }
-
- /** Creates a content dispatcher. */
- protected Dispatcher createContentDispatcher() {
- return new NSContentDispatcher();
- } // createContentDispatcher():Dispatcher
-
- /**
- * Dispatcher to handle content scanning.
- */
- protected final class NSContentDispatcher
- extends ContentDispatcher {
-
- /**
- * Scan for root element hook. This method is a hook for
- * subclasses to add code that handles scanning for the root
- * element. This method will also attempt to remove DTD validator
- * from the pipeline, if there is no DTD grammar. If DTD validator
- * is no longer in the pipeline bind namespaces in the scanner.
- *
- *
- * @return True if the caller should stop and return true which
- * allows the scanner to switch to a new scanning
- * dispatcher. A return value of false indicates that
- * the content dispatcher should continue as normal.
- */
- protected boolean scanRootElementHook()
- throws IOException, XNIException {
-
- if (fExternalSubsetResolver != null && !fSeenDoctypeDecl
- && !fDisallowDoctype && (fValidation || fLoadExternalDTD)) {
- scanStartElementName();
- resolveExternalSubsetAndRead();
- reconfigurePipeline();
- if (scanStartElementAfterName()) {
- setScannerState(SCANNER_STATE_TRAILING_MISC);
- setDispatcher(fTrailingMiscDispatcher);
- return true;
- }
- }
- else {
- reconfigurePipeline();
- if (scanStartElement()) {
- setScannerState(SCANNER_STATE_TRAILING_MISC);
- setDispatcher(fTrailingMiscDispatcher);
- return true;
- }
- }
- return false;
-
- } // scanRootElementHook():boolean
-
- /**
- * Re-configures pipeline by removing the DTD validator
- * if no DTD grammar exists. If no validator exists in the
- * pipeline or there is no DTD grammar, namespace binding
- * is performed by the scanner in the enclosing class.
- */
- private void reconfigurePipeline() {
- if (fDTDValidator == null) {
- fBindNamespaces = true;
- }
- else if (!fDTDValidator.hasGrammar()) {
- fBindNamespaces = true;
- fPerformValidation = fDTDValidator.validate();
- // re-configure pipeline
- XMLDocumentSource source = fDTDValidator.getDocumentSource();
- XMLDocumentHandler handler = fDTDValidator.getDocumentHandler();
- source.setDocumentHandler(handler);
- if (handler != null)
- handler.setDocumentSource(source);
- fDTDValidator.setDocumentSource(null);
- fDTDValidator.setDocumentHandler(null);
- }
- } // reconfigurePipeline()
- }
-
- } // class XMLNSDocumentScannerImpl