void finalizeConverter()

in src/main/java/org/apache/log4j/helpers/PatternParser.java [230:365]
97 lines of code
19 McCabe index (conditional complexity)

  void finalizeConverter(char c) {
    PatternConverter pc = null;
    switch(c) {
    case 'c':
      pc = new CategoryPatternConverter(formattingInfo,
					extractPrecisionOption());
      //LogLog.debug("CATEGORY converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 'C':
      pc = new ClassNamePatternConverter(formattingInfo,
					 extractPrecisionOption());
      //LogLog.debug("CLASS_NAME converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 'd':
      String dateFormatStr = AbsoluteTimeDateFormat.ISO8601_DATE_FORMAT;
      DateFormat df;
      String dOpt = extractOption();
      if(dOpt != null)
	dateFormatStr = dOpt;

      if(dateFormatStr.equalsIgnoreCase(
                                    AbsoluteTimeDateFormat.ISO8601_DATE_FORMAT))
	df = new  ISO8601DateFormat();
      else if(dateFormatStr.equalsIgnoreCase(
                                   AbsoluteTimeDateFormat.ABS_TIME_DATE_FORMAT))
	df = new AbsoluteTimeDateFormat();
      else if(dateFormatStr.equalsIgnoreCase(
                              AbsoluteTimeDateFormat.DATE_AND_TIME_DATE_FORMAT))
	df = new DateTimeDateFormat();
      else {
	try {
	  df = new SimpleDateFormat(dateFormatStr);
	}
	catch (IllegalArgumentException e) {
	  LogLog.error("Could not instantiate SimpleDateFormat with " +
		       dateFormatStr, e);
	  df = (DateFormat) OptionConverter.instantiateByClassName(
			           "org.apache.log4j.helpers.ISO8601DateFormat",
				   DateFormat.class, null);
	}
      }
      pc = new DatePatternConverter(formattingInfo, df);
      //LogLog.debug("DATE converter {"+dateFormatStr+"}.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 'F':
      pc = new LocationPatternConverter(formattingInfo,
					FILE_LOCATION_CONVERTER);
      //LogLog.debug("File name converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 'l':
      pc = new LocationPatternConverter(formattingInfo,
					FULL_LOCATION_CONVERTER);
      //LogLog.debug("Location converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 'L':
      pc = new LocationPatternConverter(formattingInfo,
					LINE_LOCATION_CONVERTER);
      //LogLog.debug("LINE NUMBER converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 'm':
      pc = new BasicPatternConverter(formattingInfo, MESSAGE_CONVERTER);
      //LogLog.debug("MESSAGE converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 'M':
      pc = new LocationPatternConverter(formattingInfo,
					METHOD_LOCATION_CONVERTER);
      //LogLog.debug("METHOD converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 'p':
      pc = new BasicPatternConverter(formattingInfo, LEVEL_CONVERTER);
      //LogLog.debug("LEVEL converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 'r':
      pc = new BasicPatternConverter(formattingInfo,
					 RELATIVE_TIME_CONVERTER);
      //LogLog.debug("RELATIVE time converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
    case 't':
      pc = new BasicPatternConverter(formattingInfo, THREAD_CONVERTER);
      //LogLog.debug("THREAD converter.");
      //formattingInfo.dump();
      currentLiteral.setLength(0);
      break;
      /*case 'u':
      if(i < patternLength) {
	char cNext = pattern.charAt(i);
	if(cNext >= '0' && cNext <= '9') {
	  pc = new UserFieldPatternConverter(formattingInfo, cNext - '0');
	  LogLog.debug("USER converter ["+cNext+"].");
	  formattingInfo.dump();
	  currentLiteral.setLength(0);
	  i++;
	}
	else
	  LogLog.error("Unexpected char" +cNext+" at position "+i);
      }
      break;*/
    case 'x':
      pc = new BasicPatternConverter(formattingInfo, NDC_CONVERTER);
      //LogLog.debug("NDC converter.");
      currentLiteral.setLength(0);
      break;
    case 'X':
      String xOpt = extractOption();
      pc = new MDCPatternConverter(formattingInfo, xOpt);
      currentLiteral.setLength(0);
      break;
    default:
      LogLog.error("Unexpected char [" +c+"] at position "+i
		   +" in conversion patterrn.");
      pc = new LiteralPatternConverter(currentLiteral.toString());
      currentLiteral.setLength(0);
    }

    addConverter(pc);
  }