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// Locator2.java - extended Locator
// http://www.saxproject.org
// Public Domain: no warranty.
// $Id: Locator2.java,v 1.1.1.1 2003-02-01 02:10:44 cbj Exp $
package org.xml.sax.ext;
import org.xml.sax.Locator;
/**
* SAX2 extension to augment the entity information provided
* though a {@link Locator}.
* If an implementation supports this extension, the Locator
* provided in {@link org.xml.sax.ContentHandler#setDocumentLocator
* ContentHandler.setDocumentLocator() } will implement this
* interface, and the
* <em>http://xml.org/sax/features/use-locator2</em> feature
* flag will have the value <em>true</em>.
*
* <blockquote>
* <em>This module, both source code and documentation, is in the
* Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
* </blockquote>
*
* <p> XMLReader implementations are not required to support this
* information, and it is not part of core-only SAX2 distributions.</p>
*
* @since SAX 2.0 (extensions 1.1 alpha)
* @author David Brownell
* @version TBS
*/
public interface Locator2 extends Locator
{
/**
* Returns the version of XML used for the entity. This will
* normally be the identifier from the current entity's
* <em><?xml version='...' ...?></em> declaration,
* or be defaulted by the parser.
*
* <p> At this writing, only one version ("1.0") is defined, but it
* seems likely that a new version will be defined which has slightly
* different rules about which characters are legal in XML names.
*
* @return Identifier for the XML version being used to interpret
* the entity's text.
*/
public String getXMLVersion ();
/**
* Returns the name of the character encoding for the entity.
* If the encoding was declared externally (for example, in a MIME
* Content-Type header), that will be the name returned. Else if there
* was an <em><?xml ...encoding='...'?></em> declaration at
* the start of the document, that encoding name will be returned.
* Otherwise the encoding will been inferred (normally to be UTF-8, or
* some UTF-16 variant), and that inferred name will be returned.
*
* <p>When an {@link org.xml.sax.InputSource InputSource} is used
* to provide an entity's character stream, this method returns the
* encoding provided in that input stream.
*
* <p> Note that some recent W3C specifications require that text
* in some encodings be normalized, using Unicode Normalization
* Form C, before processing. Such normalization must be performed
* by applications, and would normally be triggered based on the
* value returned by this method.
*
* <p> Encoding names may be those used by the underlying JVM,
* and comparisons should be case-insensitive.
*
* @return Name of the character encoding being used to interpret
* the entity's text, or null if this was not provided for a
* character stream passed through an InputSource.
*/
public String getEncoding ();
}
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