protected override bool ParseMatch(DatesRawData data, Match match, DateTime userDate)
{
var date = new AbstractPeriod();
// day of week
var dayOfWeek = ParserUtils.FindIndex(data.Tokens[match.Groups[2].Index].Value, Keywords.DaysOfWeek()) + 1;
var userDayOfWeek = (int)userDate.DayOfWeek;
if (userDayOfWeek == 0)
{
userDayOfWeek = 7; // starts from Monday, not Sunday
}
var diff = dayOfWeek - userDayOfWeek;
if (match.Groups[1].Success)
{
switch (match.Groups[1].Value)
{
case "y": // "closest next"
if (diff < 0)
{
diff += 7;
}
date.Date = userDate.AddDays(diff);
break;
case "x": // "next"
date.Date = userDate.AddDays(diff + 7);
break;
case "s": // "previous"
date.Date = userDate.AddDays(diff - 7);
break;
case "u": // "current"
date.Date = userDate.AddDays(diff);
break;
}
date.FixDownTo(FixPeriod.Day);
}
else
{
date.Date = userDate.AddDays(diff);
date.Fix(FixPeriod.Day);
date.FixDayOfWeek = true;
}
// remove and insert
data.ReplaceTokensByDates(match.Index, match.Length, date);
return(true);
}
internal static string CreatePatternFromToken(string token)
{
var t = token.ToLower().Replace("[^0-9а-яё-]", "").Trim();
if (Morph.HasOneOfLemmas(t, Keywords.Year))
{
return("Y");
}
if (Morph.HasOneOfLemmas(t, Keywords.Months().ToArray()))
{
return("M");
}
if (Morph.HasOneOfLemmas(t, Keywords.DaysOfWeek().ToArray()))
{
return("D");
}
if (Morph.HasOneOfLemmas(t, Keywords.PreviousPostfix))
{
return("b");
}
if (Morph.HasOneOfLemmas(t, Keywords.AfterPostfix))
{
return("l");
}
if (Morph.HasOneOfLemmas(t, Keywords.After))
{
return("i");
}
if (Morph.HasOneOfLemmas(t, Keywords.Holiday))
{
return("W");
}
var p = PeriodFromToken(t);
switch (p)
{
case Period.Minute:
return("e");
case Period.Hour:
return("h");
case Period.Day:
return("d");
case Period.Week:
return("w");
case Period.Month:
return("m");
}
var r = RelativeModeFromToken(t);
switch (r)
{
case RelativeMode.Previous:
return("s");
case RelativeMode.Current:
return("u");
case RelativeMode.CurrentNext:
return("y");
case RelativeMode.Next:
return("x");
}
var n = NeighbourDaysFromToken(t);
if (n > int.MinValue)
{
return((n + 4).ToString());
}
var d = DaytimeFromToken(t);
switch (d)
{
case DayTime.Morning:
return("r");
case DayTime.Noon:
return("n");
case DayTime.Day:
return("a");
case DayTime.Evening:
return("v");
case DayTime.Night:
return("g");
}
var pt = PartTimeFromToken(t);
switch (pt)
{
case PartTime.Quarter:
return("Q");
case PartTime.Half:
return("H");
}
if (int.TryParse(t, out var c))
{
if (c < 0 || c > 9999)
{
return("_");
}
if (c > 1900)
{
return("1");
}
return("0");
}
if (Morph.HasOneOfLemmas(t, Keywords.TimeFrom))
{
return("f");
}
if (Morph.HasOneOfLemmas(t, Keywords.TimeTo))
{
return("t");
}
if (Morph.HasOneOfLemmas(t, Keywords.TimeOn))
{
return("o");
}
if (Morph.HasOneOfLemmas(t, Keywords.DayInMonth))
{
return("#");
}
if (t == "и")
{
return("N");
}
return("_");
}
