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package com.sun.tools.xjc.reader.dtd.bindinfo;
import org.w3c.dom.Element;
import org.xml.sax.Locator;
class DOMLocator {
private static final String locationNamespace =
"http://www.sun.com/xmlns/jaxb/dom-location";
private static final String systemId = "systemid";
private static final String column = "column";
private static final String line = "line";
/** Sets the location information to a specified element. */
public static void setLocationInfo( Element e, Locator loc ) {
e.setAttributeNS(locationNamespace,"loc:"+systemId,loc.getSystemId());
e.setAttributeNS(locationNamespace,"loc:"+column,Integer.toString(loc.getLineNumber()));
e.setAttributeNS(locationNamespace,"loc:"+line,Integer.toString(loc.getColumnNumber()));
}
/**
* Gets the location information from an element.
*
* <p>
* For this method to work, the setLocationInfo method has to be
* called before.
*/
public static Locator getLocationInfo( final Element e ) {
if(DOMUtil.getAttribute(e,locationNamespace,systemId)==null)
return null; // no location information
return new Locator(){
public int getLineNumber() {
return Integer.parseInt(DOMUtil.getAttribute(e,locationNamespace,line));
}
public int getColumnNumber() {
return Integer.parseInt(DOMUtil.getAttribute(e,locationNamespace,column));
}
public String getSystemId() {
return DOMUtil.getAttribute(e,locationNamespace,systemId);
}
// we are not interested in PUBLIC ID.
public String getPublicId() { return null; }
};
}
}