protected override string GetText(MonthlyRecurrenceRule rrule, CultureInfo cultureInfo)
{
if (rrule == null)
{
throw new ArgumentNullException(nameof(rrule));
}
if (cultureInfo == null)
{
throw new ArgumentNullException(nameof(cultureInfo));
}
var sb = new StringBuilder();
sb.Append("every");
if (rrule.Interval == 1)
{
sb.Append(" month");
}
else if (rrule.Interval == 2)
{
sb.Append(" other month");
}
else if (rrule.Interval > 2)
{
sb.Append(" ");
sb.Append(rrule.Interval);
sb.Append(" months");
}
if (rrule.ByMonthDays != null && rrule.ByMonthDays.Any())
{
if (rrule.ByMonthDays.Any(day => day < 0))
{
sb.Append(" on the ");
}
else
{
sb.Append(" the ");
}
ListToHumanText(sb, EnglishCultureInfo, rrule.ByMonthDays.Select(GetByMonthdayHumanText).ToList(), ", ", " and ");
}
if (rrule.ByWeekDays != null && rrule.ByWeekDays.Any())
{
sb.Append(" on ");
if (rrule.BySetPositions != null && rrule.BySetPositions.Any())
{
sb.Append("the ");
sb.Append(GetBySetPosHumanText(rrule.BySetPositions[0]));
sb.Append(" ");
}
sb.Append(GetWeekdayHumanText(rrule.ByWeekDays, options: WeekdayHumanTextOptions.AbbrDays | WeekdayHumanTextOptions.AbbrWeekdays | WeekdayHumanTextOptions.AbbrWeekendDays));
}
GetEndHumanText(rrule, sb);
return(sb.ToString());
}
protected override string GetText(MonthlyRecurrenceRule rrule, CultureInfo cultureInfo)
{
if (rrule == null)
{
throw new ArgumentNullException(nameof(rrule));
}
if (cultureInfo == null)
{
throw new ArgumentNullException(nameof(cultureInfo));
}
var sb = new StringBuilder();
sb.Append("tous les");
if (rrule.Interval == 1)
{
sb.Append(" mois");
}
else
{
sb.Append(' ');
sb.Append(rrule.Interval);
sb.Append(" mois");
}
if (rrule.ByMonthDays != null && rrule.ByMonthDays.Any())
{
sb.Append(" le ");
ListToHumanText(sb, FrenchCultureInfo, rrule.ByMonthDays.Select(GetByMonthdayOrdinalHumanText).ToList(), ", ", " et ");
sb.Append(" jour");
}
if (rrule.ByWeekDays != null && rrule.ByWeekDays.Any())
{
if (rrule.BySetPositions != null && rrule.BySetPositions.Any())
{
sb.Append(" le ");
sb.Append(GetBySetPosHumanText(rrule.BySetPositions[0]));
}
sb.Append(' ');
sb.Append(GetWeekdayHumanText(rrule.ByWeekDays, options: WeekdayHumanTextOptions.AbbrDays | WeekdayHumanTextOptions.AbbrWeekdays | WeekdayHumanTextOptions.AbbrWeekendDays));
}
GetHumanEnd(rrule, sb);
return(sb.ToString());
}
public static bool TryParse(string rrule, out RecurrenceRule recurrenceRule, out string error)
{
if (rrule == null)
{
throw new ArgumentNullException(nameof(rrule));
}
recurrenceRule = null;
error = null;
try
{
// Extract parts
IDictionary <string, string> values = new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase);
var parts = rrule.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var part in parts)
{
var split = SplitPart(part);
if (values.ContainsKey(split.Item1))
{
error = $"Duplicate name: '{split.Item1}'.";
return(false);
}
if (string.Equals("UNTIL", split.Item1, StringComparison.OrdinalIgnoreCase) && values.ContainsKey("COUNT"))
{
error = "Cannot set UNTIL and COUNT in the same recurrence rule.";
return(false);
}
if (string.Equals("COUNT", split.Item1, StringComparison.OrdinalIgnoreCase) && values.ContainsKey("UNTIL"))
{
error = "Cannot set UNTIL and COUNT in the same recurrence rule.";
return(false);
}
values.Add(split.Item1, split.Item2);
}
// Set specific properties
var frequency = values.GetValue("FREQ", Frequency.None);
switch (frequency)
{
case Frequency.Daily:
var dailyRecurrenceRule = new DailyRecurrenceRule
{
ByMonthDays = ParseByMonthDays(values),
ByMonths = ParseByMonth(values),
ByWeekDays = ParseByDay(values)
};
recurrenceRule = dailyRecurrenceRule;
break;
case Frequency.Weekly:
var weeklyRecurrence = new WeeklyRecurrenceRule
{
ByMonths = ParseByMonth(values),
ByWeekDays = ParseByDay(values)
};
recurrenceRule = weeklyRecurrence;
break;
case Frequency.Monthly:
var monthlyRecurrence = new MonthlyRecurrenceRule
{
ByWeekDays = ParseByDayWithOffset(values),
ByMonthDays = ParseByMonthDays(values),
ByMonths = ParseByMonth(values)
};
recurrenceRule = monthlyRecurrence;
break;
case Frequency.Yearly:
var yearlyRecurrence = new YearlyRecurrenceRule
{
ByWeekDays = ParseByDayWithOffset(values),
ByMonthDays = ParseByMonthDays(values),
BySetPositions = ParseBySetPos(values),
ByMonths = ParseByMonth(values),
ByYearDays = ParseByYearDay(values)
};
//yearlyRecurrence.ByWeekNo = ParseByWeekNo(values);
recurrenceRule = yearlyRecurrence;
break;
default:
error = "Unknown Frequency (FREQ).";
return(false);
}
// Set general properties
// Set Interval
recurrenceRule.Interval = values.GetValue("INTERVAL", 1);
recurrenceRule.Occurrences = values.GetValue("COUNT", (int?)null);
var until = values.GetValue("UNTIL", (string)null);
if (until != null)
{
recurrenceRule.EndDate = Utilities.ParseDateTime(until);
}
recurrenceRule.BySetPositions = ParseBySetPos(values);
recurrenceRule.WeekStart = ParseWeekStart(values);
return(true);
}
catch (FormatException e)
{
error = e.Message;
return(false);
}
}
protected abstract string GetText(MonthlyRecurrenceRule rrule, CultureInfo cultureInfo);