/**
*Class SAXErrorHandler
*By Martin Carlsson
*Internetprogrammering 4 Course
*/
import org.xml.sax.*;

/**
*Takes care of Exceptions that are thrown during the parsing of non-well-formed or non-validating XML documents.
*@see SAXChecker
*/
public class SAXErrorHandler implements ErrorHandler {
    private String filename;
        
    public SAXErrorHandler(String filename) {
        this.filename = filename;
    }
    
    public void warning(SAXParseException sE) throws SAXException {
        showParserExceptions("The file \""+ filename + "\" seem to validate ok but have warnings!", sE, "Warning");
        throw (sE);
    }
    
    public void error(SAXParseException sE) throws SAXException {
        showParserExceptions("The file \""+ filename + "\" does NOT VALIDATE!", sE, "Error");
        throw (sE);
    }
    
    public void fatalError(SAXParseException sE) throws SAXException {
        showParserExceptions("The file \""+ filename + "\"  is NOT WELLFORMED!", sE, "Fatal Error");
        throw (sE);
    }
    
    /**
    Shows error messages
    *@param description shows a description of the error message
    *@param sE exception to collect information from
    *@param errorType the type of error message
    */
    private void showParserExceptions(String description, SAXParseException sE, String errorType) {
        
        System.out.println("\n**********************SAXParser*************************");
        System.out.println("\nParsed file: " + filename + ".");  
        System.out.println(description);
        System.out.println(errorType + " location: " + sE.getLineNumber() + ", column " + sE.getColumnNumber() +".");
        System.out.println("Error Message:\n" +  sE.getMessage() + "\n");
    }
}