/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.core.joran.action;
  
  import org.xml.sax.Attributes;
  
  import ch.qos.logback.core.joran.spi.SaxEventInterpretationContext;
  import ch.qos.logback.core.joran.spi.ElementSelector;
  import ch.qos.logback.core.util.OptionHelper;
  
  public class NewRuleAction extends Action {
      boolean inError = false;
  
      /**
       * Instantiates a layout of the given class and sets its name.
       */
      public void begin(SaxEventInterpretationContext ec, String localName, Attributes attributes) {
          // Let us forget about previous errors (in this object)
          inError = false;
          String errorMsg;
          String pattern = attributes.getValue(Action.PATTERN_ATTRIBUTE);
          String actionClass = attributes.getValue(Action.ACTION_CLASS_ATTRIBUTE);
  
          if (OptionHelper.isNullOrEmptyOrAllSpaces(pattern)) {
              inError = true;
              errorMsg = "No 'pattern' attribute in <newRule>";
              addError(errorMsg);
              return;
          }
  
          if (OptionHelper.isNullOrEmptyOrAllSpaces(actionClass)) {
              inError = true;
              errorMsg = "No 'actionClass' attribute in <newRule>";
              addError(errorMsg);
              return;
          }
  
          try {
              addInfo("About to add new Joran parsing rule [" + pattern + "," + actionClass + "].");
              ec.getSaxEventInterpreter().getRuleStore().addRule(new ElementSelector(pattern), actionClass);
          } catch (Exception oops) {
              inError = true;
              errorMsg = "Could not add new Joran parsing rule [" + pattern + "," + actionClass + "]";
              addError(errorMsg);
          }
      }
  
      /**
       * Once the children elements are also parsed, now is the time to activate the
       * appender options.
       */
      public void end(SaxEventInterpretationContext ec, String n) {
      }
  
      public void finish(SaxEventInterpretationContext ec) {
      }
  }