/**
    * 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.access.html;
  
  import static ch.qos.logback.core.CoreConstants.LINE_SEPARATOR;
  
  import java.util.Map;
  
  import ch.qos.logback.access.PatternLayout;
  import ch.qos.logback.access.spi.IAccessEvent;
  import ch.qos.logback.core.html.HTMLLayoutBase;
  import ch.qos.logback.core.pattern.Converter;
  
  /**
   * 
   * HTMLLayout outputs events in an HTML table. 
   * <p>
   * The content of the table columns are specified using a conversion pattern. 
   * See {@link ch.qos.logback.access.PatternLayout} for documentation on the
   * available patterns.
   * <p>
   * For more information about this layout, please refer to the online manual at
   * http://logback.qos.ch/manual/layouts.html#AccessHTMLLayout
   * 
   * 
   * @author Ceki G&uuml;lc&uuml;
   * @author S&eacute;bastien Pennec
   */
  public class HTMLLayout extends HTMLLayoutBase<IAccessEvent> {
  
      /**
       * Default pattern string for log output.
       */
      static final String DEFAULT_CONVERSION_PATTERN = "%h%l%u%t%r%s%b";
  
      /**
       * Constructs a PatternLayout using the DEFAULT_LAYOUT_PATTERN.
       * 
       */
      public HTMLLayout() {
          pattern = DEFAULT_CONVERSION_PATTERN;
          cssBuilder = new DefaultCssBuilder();
      }
  
      @Override
      protected Map<String, String> getDefaultConverterMap() {
          return PatternLayout.defaultConverterMap;
      }
  
      @Override
      public String doLayout(IAccessEvent event) {
          StringBuilder buf = new StringBuilder();
          startNewTableIfLimitReached(buf);
  
          boolean odd = true;
          if (((counter++) & 1) == 0) {
              odd = false;
          }
  
          buf.append(LINE_SEPARATOR);
          buf.append("<tr class=\"");
          if (odd) {
              buf.append(" odd\">");
          } else {
              buf.append(" even\">");
          }
          buf.append(LINE_SEPARATOR);
  
          Converter<IAccessEvent> c = head;
          while (c != null) {
              appendEventToBuffer(buf, c, event);
              c = c.getNext();
          }
          buf.append("</tr>");
          buf.append(LINE_SEPARATOR);
  
          return buf.toString();
      }
  
      private void appendEventToBuffer(StringBuilder buf, Converter<IAccessEvent> c, IAccessEvent event) {
          buf.append("<td class=\"");
          buf.append(computeConverterName(c));
          buf.append("\">");
          c.write(buf, event);
          buf.append("</td>");
          buf.append(LINE_SEPARATOR);
      }
  }