/// <summary>
/// Parses Dicom Date/Time tags. The <paramref name="dicomDateTime"/> would be a DateTime tag value - such as AcquisitionDatetime,
/// the <paramref name="dicomDate"/> would be just a Date tag value - such as AcquisitionDate; and <paramref name="dicomTime"/> would
/// be just the Time tag value - such as AcquisitionTime. So, this method will parse the <paramref name="dicomDateTime"/> if it is not empty,
/// otherwise it will parse the <paramref name="dicomDate"/> and <paramref name="dicomTime"/> together.
/// </summary>
/// <param name="dicomDateTime">The dicom date time.</param>
/// <param name="dicomDate">The dicom date.</param>
/// <param name="dicomTime">The dicom time.</param>
/// <param name="outDateTime">The date time.</param>
/// <returns></returns>
public static bool ParseDateAndTime(string dicomDateTime, string dicomDate, string dicomTime, out DateTime outDateTime)
{
outDateTime = DateTime.MinValue; // set default value
string dateTimeValue = dicomDateTime == null ? String.Empty : dicomDateTime.Trim();
// First try to do dateValue and timeValue separately - if both are there then set
// dateTimeConcat, and then parse dateTimeConcat the same as if dateTimeValue was set
if (dateTimeValue != String.Empty)
{
return(Parse(dateTimeValue, out outDateTime));
}
string dateValue = dicomDate == null ? String.Empty : dicomDate.Trim();
string timeValue = dicomTime == null ? String.Empty : dicomTime.Trim();
if (dateValue == String.Empty)
{
return(false);
}
DateTime date;
if (!DateParser.Parse(dateValue, out date))
{
return(false);
}
outDateTime = date;
if (timeValue == String.Empty)
{
return(true);
}
//Even though we have the date, the time is wrong. The "out" parameter will still have the parsed date in it if anyone cares.
DateTime time;
if (!TimeParser.Parse(timeValue, out time))
{
return(false);
}
outDateTime = outDateTime.Add(time.TimeOfDay);
return(true);
}
/// <summary>
/// Will parse a date range adhering to the dicom date format, returning the dates as <see cref="DateTime"/> objects.
/// </summary>
/// <param name="dateRange">the string to be parsed</param>
/// <param name="fromDate">the "from date", or null</param>
/// <param name="toDate">the "to date" or null</param>
/// <param name="isRange">whether or not the input value was actually a range. If not, then the "from date" value should be taken
/// to be an exact value, not a range, depending on the application.</param>
/// <exception cref="InvalidOperationException">if the input range is poorly formatted</exception>
public static void Parse(string dateRange, out DateTime?fromDate, out DateTime?toDate, out bool isRange)
{
try
{
fromDate = null;
toDate = null;
isRange = false;
if (dateRange == null)
{
return;
}
string fromDateString = "", toDateString = "";
string[] splitRange = dateRange.Split('-');
if (splitRange.Length == 1)
{
fromDateString = splitRange[0];
}
else if (splitRange.Length == 2)
{
fromDateString = splitRange[0];
toDateString = splitRange[1];
isRange = true;
}
else
{
throw new InvalidOperationException(string.Format(SR.ExceptionPoorlyFormattedDateRange, dateRange));
}
DateTime outDate;
if (fromDateString == "")
{
fromDate = null;
}
else
{
if (!DateParser.Parse(fromDateString, out outDate))
{
throw new InvalidOperationException(string.Format(SR.ExceptionPoorlyFormattedDateRange, dateRange));
}
fromDate = outDate;
}
if (toDateString == "")
{
toDate = null;
}
else
{
if (!DateParser.Parse(toDateString, out outDate))
{
throw new InvalidOperationException(string.Format(SR.ExceptionPoorlyFormattedDateRange, dateRange));
}
toDate = outDate;
}
if (fromDate != null && toDate != null)
{
if (fromDate > toDate)
{
throw new InvalidOperationException(string.Format(SR.ExceptionPoorlyFormattedDateRange, dateRange));
}
}
}
catch
{
fromDate = toDate = null;
throw;
}
}
