/// <summary>
/// Parses Cron Expressions of the following format:
/// (Minute) (hour) (day of month) (month) (day of week) (command)
/// * means all possible time unit
/// - range of time unit
/// , comma separated individual time units
/// / increments where the left is the starting point in the time unit and the right is the interval till the max of the time unit
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public CronExpressionResult Parse(string input)
{
var inputParts = input.Split(' ', StringSplitOptions.RemoveEmptyEntries);
if (!CheckIfValid(inputParts))
{
throw new InvalidExpressionException("Invalid input arguments");
}
var result = new CronExpressionResult();
result.Minutes = minutePart.ParseNotation(inputParts[0]);
result.Hours = hourPart.ParseNotation(inputParts[1]);
result.DaysOfMonth = dayOfMonthPart.ParseNotation(inputParts[2]);
result.Months = monthPart.ParseNotation(inputParts[3]);
result.DaysOfWeek = dayOfWeekPart.ParseNotation(inputParts[4]);
result.Command = inputParts[5];
return(result);
}
public string ParseExpression(String notation)
{
if (string.IsNullOrEmpty(notation))
{
throw new InvalidExpressionException("Invalid arguments provided");
}
try
{
CronExpressionResult cronExpressionResult = cronExpressionParserService.Parse(notation);
var cronExpressionResultFormatter = new CronExpressionResultFormatter();
var formattedCronExpression = cronExpressionResultFormatter.Format(cronExpressionResult);
return(formattedCronExpression);
}
catch (Exception ex)
{
throw new ExpressionParsingException("Parsing Exception", ex);
}
}
