public static string GetStaticDisplayText(SpecifierInfo specifier, DateTimeFormatInfo dateTimeFormat,
Calendar calendar, DateTime?value)
{
if (specifier.ValueType != ValueType.Static)
{
throw new ArgumentException("specifier");
}
switch (specifier.Type)
{
case SpecifierType.g:
if (value.HasValue)
{
int era = calendar.GetEra(value.Value);
return(dateTimeFormat.GetEraName(era));
}
return(string.Empty);
case SpecifierType.DateSeparator:
return(dateTimeFormat.DateSeparator);
case SpecifierType.TimeSeparator:
return(dateTimeFormat.TimeSeparator);
default:
throw new ArgumentOutOfRangeException("specifier.Type");
}
}
public bool IncreaseComponentValue(SpecifierInfo specifier)
{
switch (specifier.Type)
{
case SpecifierType.s:
case SpecifierType.ss:
if (this.second.HasValue && this.second.Value < 59)
{
this.second++;
}
else
{
this.second = 1;
}
return(true);
case SpecifierType.m:
case SpecifierType.mm:
if (this.minute.HasValue && this.minute.Value < 59)
{
this.minute++;
}
else
{
this.minute = 1;
}
return(true);
case SpecifierType.h:
case SpecifierType.hh:
case SpecifierType.H:
case SpecifierType.HH:
if (this.hour.HasValue && this.hour.Value < 23)
{
this.hour++;
}
else
{
this.hour = 0;
}
this.am = hour < 12;
return(true);
case SpecifierType.d:
case SpecifierType.dd:
if (this.day.HasValue)
{
if (this.year.HasValue && this.month.HasValue)
{
int daysInMonth = this.Calendar.GetDaysInMonth(this.year.Value, this.month.Value);
if (this.day.Value < daysInMonth)
{
this.day++;
return(true);
}
}
}
this.day = 1;
return(true);
case SpecifierType.M:
case SpecifierType.MM:
case SpecifierType.MMM:
case SpecifierType.MMMM:
if (this.month.HasValue)
{
if (this.year.HasValue)
{
int monthsInYear = this.Calendar.GetMonthsInYear(this.year.Value);
if (this.month.Value < monthsInYear)
{
this.month++;
return(true);
}
}
else
{
if (this.month.Value < 12) /**********/
{
this.month++;
return(true);
}
}
}
this.month = 1;
return(true);
case SpecifierType.y:
case SpecifierType.yy:
case SpecifierType.yyy:
case SpecifierType.yyyy:
if (this.year.HasValue)
{
int maxYear = this.Calendar.GetYear(this.Calendar.MaxSupportedDateTime);
if (this.year.Value < maxYear)
{
this.year++;
return(true);
}
else
{
return(false);
}
}
this.year = this.Calendar.GetYear(DateTime.Now);
return(true);
case SpecifierType.t:
case SpecifierType.tt:
if (this.hour.HasValue)
{
if (this.hour < 12)
{
this.hour += 12;
this.am = false;
}
else
{
this.hour -= 12;
this.am = true;
}
return(true);
}
return(false);
}
return(false);
}
public static SpecifierInfo[] GetSpecifiers(string format)
{
if (format == null)
{
throw new ArgumentNullException("format");
}
StringBuilder stringLiteral = new StringBuilder();
var matchedSpecifiers = new List <SpecifierInfo>();
int length = format.Length;
for (int index = 0; index < length;)
{
char symbol = format[index];
if (symbol.Equals(escapeCharacter))
{
if (index < length - 1)
{
index++; // Move to the next character
stringLiteral.Append(format[index]);
index++;
}
continue;
}
var specsOfSymbol = GetSpecsOfSymbol(symbol);
int lastMatchedRepeatCount = 1;
SpecifierInfo matchedSpecifier = new SpecifierInfo();
bool specifierFound = false;
int repeatCount = 0;
if (specsOfSymbol != null)
{
do
{
repeatCount++;
foreach (var specifier in specsOfSymbol)
{
int specSymbolCount = specifier.Symbol.Length;
if (specSymbolCount == repeatCount || (specSymbolCount < repeatCount &&
specifier.MatchesExtraSymbols))
{
matchedSpecifier = specifier;
lastMatchedRepeatCount = repeatCount;
specifierFound = true;
}
}
} while ((index + repeatCount) < length && format[index + repeatCount].Equals(symbol));
}
else
{
repeatCount = 1;
}
if (specifierFound)
{
if (stringLiteral.Length > 0)
{
var slSpecifier = SpecifierInfo.CreateStringLiteralSpecifier(stringLiteral.ToString());
matchedSpecifiers.Add(slSpecifier);
stringLiteral = new StringBuilder();
}
matchedSpecifiers.Add(matchedSpecifier);
}
else
{
stringLiteral.Append(new string(symbol, repeatCount));
}
index += lastMatchedRepeatCount;
}
if (stringLiteral.Length > 0)
{
var slSpecifier = SpecifierInfo.CreateStringLiteralSpecifier(stringLiteral.ToString());
matchedSpecifiers.Add(slSpecifier);
}
return(matchedSpecifiers.ToArray());
}
public string GetDisplayText(SpecifierInfo specifier)
{
if (specifier.ValueType == ValueType.StringLiteral)
{
return(specifier.Symbol);
}
string displayText = null;
switch (specifier.Type)
{
case SpecifierType.s:
if (this.second.HasValue)
{
displayText = this.second.Value.ToString();
}
break;
case SpecifierType.ss:
if (this.second.HasValue)
{
displayText = this.second.Value.ToString("00");
}
break;
case SpecifierType.m:
if (this.minute.HasValue)
{
displayText = this.minute.Value.ToString();
}
break;
case SpecifierType.mm:
if (this.minute.HasValue)
{
displayText = this.minute.Value.ToString("00");
}
break;
case SpecifierType.h:
if (this.hour.HasValue)
{
int hour = this.hour.Value;
if (hour > 12)
{
hour -= 12;
}
displayText = hour.ToString();
}
break;
case SpecifierType.hh:
if (this.hour.HasValue)
{
int hour = this.hour.Value;
if (hour > 12)
{
hour -= 12;
}
displayText = hour.ToString("00");
}
break;
case SpecifierType.H:
if (this.hour.HasValue)
{
displayText = this.hour.ToString();
}
break;
case SpecifierType.HH:
if (this.hour.HasValue)
{
displayText = this.hour.Value.ToString("00");
}
break;
case SpecifierType.t:
if (this.hour.HasValue)
{
int hour = this.hour.Value;
string designator;
if (hour < 12)
{
designator = this.DateTimeFormat.AMDesignator;
}
else
{
designator = this.DateTimeFormat.PMDesignator;
}
if (!string.IsNullOrEmpty(designator))
{
displayText = designator.Substring(0, 1);
}
else
{
displayText = string.Empty;
}
}
break;
case SpecifierType.tt:
if (this.hour.HasValue)
{
int hour = this.hour.Value;
if (hour < 12)
{
displayText = this.DateTimeFormat.AMDesignator;
}
else
{
displayText = this.DateTimeFormat.PMDesignator;
}
}
break;
case SpecifierType.d:
if (this.day.HasValue)
{
displayText = this.day.ToString();
}
break;
case SpecifierType.dd:
if (this.day.HasValue)
{
displayText = this.day.Value.ToString("00");
}
break;
case SpecifierType.ddd:
if (this.value.HasValue)
{
var dayOfWeek = this.Calendar.GetDayOfWeek(this.value.Value);
displayText = this.DateTimeFormat.GetAbbreviatedDayName(dayOfWeek);
}
break;
case SpecifierType.dddd:
if (this.value.HasValue)
{
var dayOfWeek = this.Calendar.GetDayOfWeek(this.value.Value);
displayText = this.DateTimeFormat.GetDayName(dayOfWeek);
}
break;
case SpecifierType.M:
if (this.month.HasValue)
{
displayText = this.month.ToString();
}
break;
case SpecifierType.MM:
if (this.month.HasValue)
{
displayText = this.month.Value.ToString("00");
}
break;
case SpecifierType.MMM:
if (this.month.HasValue)
{
displayText = this.DateTimeFormat.GetAbbreviatedMonthName(this.month.Value);
}
break;
case SpecifierType.MMMM:
if (this.month.HasValue)
{
displayText = this.DateTimeFormat.GetMonthName(this.month.Value);
}
break;
case SpecifierType.y:
if (this.year.HasValue)
{
displayText = (this.year.Value % 100).ToString();
}
break;
case SpecifierType.yy:
if (this.year.HasValue)
{
displayText = (this.year.Value % 100).ToString("00");
}
break;
case SpecifierType.yyy:
if (this.year.HasValue)
{
displayText = this.year.Value.ToString("000");
}
break;
case SpecifierType.yyyy:
if (this.year.HasValue)
{
displayText = this.year.Value.ToString("0000");
}
break;
case SpecifierType.g:
case SpecifierType.DateSeparator:
case SpecifierType.TimeSeparator:
return(GetStaticDisplayText(specifier, this.DateTimeFormat, this.Calendar, this.Value));
default:
throw new ArgumentOutOfRangeException("specifier.Type");
}
return(displayText);
}
public bool EditComponentValue(SpecifierInfo specifier, int componentValue, bool commit, int length)
{
switch (specifier.Type)
{
case SpecifierType.s:
case SpecifierType.ss:
if (componentValue < 0)
{
return(false);
}
if (componentValue < 60)
{
if (commit)
{
this.second = componentValue;
this.UpdateDateTimeComponets();
}
return(true);
}
return(false);
case SpecifierType.m:
case SpecifierType.mm:
if (componentValue < 0)
{
return(false);
}
if (componentValue < 60)
{
if (commit)
{
this.minute = componentValue;
this.UpdateDateTimeComponets();
}
return(true);
}
return(false);
case SpecifierType.h:
case SpecifierType.hh:
if (componentValue < 0)
{
return(false);
}
if (!commit)
{
if (componentValue < 24)
{
return(true);
}
return(false);
}
if (componentValue == 0)
{
this.hour = 0;
}
else if (componentValue < 12)
{
this.hour = this.am ? componentValue : componentValue + 12;
}
else if (componentValue < 24)
{
this.hour = componentValue;
}
else
{
return(false);
}
this.UpdateDateTimeComponets();
return(true);
case SpecifierType.H:
case SpecifierType.HH:
if (componentValue < 0)
{
return(false);
}
if (componentValue < 24)
{
if (commit)
{
this.hour = componentValue;
this.UpdateDateTimeComponets();
}
return(true);
}
return(false);
case SpecifierType.d:
case SpecifierType.dd:
if (componentValue <= 0)
{
return(false);
}
if (this.year.HasValue && this.month.HasValue)
{
int daysInMonth = this.Calendar.GetDaysInMonth(this.year.Value, this.month.Value);
if (componentValue > daysInMonth)
{
return(false);
}
}
if (commit)
{
this.day = componentValue;
this.UpdateDateTimeComponets();
}
return(true);
case SpecifierType.M:
case SpecifierType.MM:
if (componentValue <= 0)
{
return(false);
}
if (this.year.HasValue)
{
int monthsInYear = this.Calendar.GetMonthsInYear(this.year.Value);
if (componentValue > monthsInYear)
{
return(false);
}
}
if (commit)
{
this.month = componentValue;
this.UpdateDateTimeComponets();
}
return(true);
case SpecifierType.y:
case SpecifierType.yy:
if (componentValue <= 0)
{
return(false);
}
if (componentValue <= 99)
{
if (commit)
{
this.year = this.Calendar.ToFourDigitYear(componentValue);
this.UpdateDateTimeComponets();
}
return(true);
}
return(false);
case SpecifierType.yyy:
case SpecifierType.yyyy:
if (componentValue <= 0)
{
return(false);
}
if (length <= 2 && componentValue <= 99)
{
if (commit)
{
this.year = this.Calendar.ToFourDigitYear(componentValue);
this.UpdateDateTimeComponets();
}
return(true);
}
else
{
int maxYear = this.Calendar.GetYear(this.Calendar.MaxSupportedDateTime);
int minYear = this.Calendar.GetYear(this.Calendar.MinSupportedDateTime);
if (componentValue >= minYear && componentValue <= maxYear)
{
if (commit)
{
this.year = componentValue;
this.UpdateDateTimeComponets();
}
return(true);
}
else if (componentValue > maxYear)
{
if (commit)
{
this.UpdateDateTimeComponets();
return(true);
}
return(false);
}
else if (componentValue < minYear)
{
if (commit)
{
this.UpdateDateTimeComponets();
}
return(true);
}
}
return(false);
}
return(false);
}
public bool DecreaseComponentValue(SpecifierInfo specifier)
{
switch (specifier.Type)
{
case SpecifierType.s:
case SpecifierType.ss:
if (this.second.HasValue && this.second.Value > 0)
{
this.second--;
}
else
{
this.second = 59;
}
return(true);
case SpecifierType.m:
case SpecifierType.mm:
if (this.minute.HasValue && this.minute.Value > 0)
{
this.minute--;
}
else
{
this.minute = 59;
}
return(true);
case SpecifierType.h:
case SpecifierType.hh:
case SpecifierType.H:
case SpecifierType.HH:
if (this.hour.HasValue && this.hour.Value > 0)
{
this.hour--;
}
else
{
this.hour = 23;
}
this.am = hour < 12;
return(true);
case SpecifierType.d:
case SpecifierType.dd:
if (this.day.HasValue && this.day.Value > 1)
{
this.day--;
}
else
{
if (this.year.HasValue && this.month.HasValue)
{
int daysInMonth = this.Calendar.GetDaysInMonth(this.year.Value, this.month.Value);
this.day = daysInMonth;
return(true);
}
this.day = 31; /********/
}
return(true);
case SpecifierType.M:
case SpecifierType.MM:
case SpecifierType.MMM:
case SpecifierType.MMMM:
if (this.month.HasValue && this.month.Value > 1)
{
this.month--;
}
else
{
if (this.year.HasValue)
{
int monthsInYear = this.Calendar.GetMonthsInYear(this.year.Value);
this.month = monthsInYear;
return(true);
}
this.month = 12; /**********/
}
return(true);
case SpecifierType.y:
case SpecifierType.yy:
case SpecifierType.yyy:
case SpecifierType.yyyy:
int minYear = this.Calendar.GetYear(this.Calendar.MinSupportedDateTime);
if (this.year.HasValue && this.year.Value > minYear)
{
this.year--;
}
else
{
this.year = this.Calendar.GetYear(DateTime.Now);
}
return(true);
case SpecifierType.t:
case SpecifierType.tt:
if (this.hour.HasValue)
{
if (this.hour < 12)
{
this.hour += 12;
this.am = false;
}
else
{
this.hour -= 12;
this.am = true;
}
return(true);
}
return(false);
}
return(false);
}
public void ClearComponentValue(SpecifierInfo specifier)
{
switch (specifier.Type)
{
case SpecifierType.s:
case SpecifierType.ss:
if (this.second != null)
{
this.second = null;
this.UpdateDateTimeComponets();
}
break;
case SpecifierType.m:
case SpecifierType.mm:
if (this.minute != null)
{
this.minute = null;
this.UpdateDateTimeComponets();
}
break;
case SpecifierType.h:
case SpecifierType.hh:
if (this.hour != null)
{
this.hour = null;
this.UpdateDateTimeComponets();
}
break;
case SpecifierType.d:
case SpecifierType.dd:
if (this.day != null)
{
this.day = null;
this.UpdateDateTimeComponets();
}
break;
case SpecifierType.M:
case SpecifierType.MM:
if (this.month != null)
{
this.month = null;
this.UpdateDateTimeComponets();
}
break;
case SpecifierType.y:
case SpecifierType.yy:
case SpecifierType.yyy:
case SpecifierType.yyyy:
if (this.year != null)
{
this.year = null;
this.UpdateDateTimeComponets();
}
break;
}
}
public bool ShouldCommit(SpecifierInfo specifier)
{
if (specifier.ValueType == ValueType.StringLiteral)
{
return(false);
}
int?dateTimeValue = null;
switch (specifier.Type)
{
case SpecifierType.s:
return(ShouldCommit(this.value.HasValue ? (int?)this.value.Value.Second : null, this.second));
case SpecifierType.m:
case SpecifierType.mm:
return(ShouldCommit(this.value.HasValue ? (int?)this.value.Value.Minute : null, this.minute));
case SpecifierType.h:
case SpecifierType.hh:
case SpecifierType.H:
case SpecifierType.HH:
case SpecifierType.t: // Correct??
case SpecifierType.tt: // Correct??
return(ShouldCommit(this.value.HasValue ? (int?)this.value.Value.Hour : null, this.hour));
case SpecifierType.d:
case SpecifierType.dd:
case SpecifierType.ddd: // Correct??
case SpecifierType.dddd: // Correct??
if (this.value.HasValue)
{
dateTimeValue = this.Calendar.GetDayOfMonth(this.value.Value);
}
return(ShouldCommit(dateTimeValue, this.day));
case SpecifierType.M:
case SpecifierType.MM:
case SpecifierType.MMM:
case SpecifierType.MMMM:
if (this.value.HasValue)
{
dateTimeValue = this.Calendar.GetMonth(this.value.Value);
}
return(ShouldCommit(dateTimeValue, this.month));
case SpecifierType.y:
case SpecifierType.yy:
case SpecifierType.yyy:
case SpecifierType.yyyy:
if (this.value.HasValue)
{
dateTimeValue = this.Calendar.GetYear(this.value.Value);
}
return(ShouldCommit(dateTimeValue, this.year));
case SpecifierType.g:
case SpecifierType.DateSeparator:
case SpecifierType.TimeSeparator:
return(false);
default:
throw new ArgumentOutOfRangeException("specifier.Type");
}
}
