public static string ToAbbreviatedFileSize(this decimal lengthInBytes, int maxPrecision = 2, FileSizeUnitAbbreviation? fileSizeUnitAbbreviation = null)
{
if (maxPrecision < 0) throw new ArgumentOutOfRangeException("maxPrecision", "Must be greater than or equal to zero.");
var unit = fileSizeUnitAbbreviation ?? GetSmartUnitAbbreviation(lengthInBytes);
var size = lengthInBytes.ConvertBytesTo(unit);
var precision = size.GetPrecision(maxPrecision);
var sizeText = size.ToString(precision.GetSizeFormat());
return string.Format("{0} {1}", sizeText, unit);
}
private static decimal ConvertBytesTo(this decimal lengthInBytes, FileSizeUnitAbbreviation unitAbbreviation)
{
switch (unitAbbreviation)
{
case FileSizeUnitAbbreviation.B: return lengthInBytes;
case FileSizeUnitAbbreviation.Kb: return lengthInBytes / Factor;
case FileSizeUnitAbbreviation.Mb: return lengthInBytes / Factor / Factor;
case FileSizeUnitAbbreviation.Gb: return lengthInBytes / Factor / Factor / Factor;
case FileSizeUnitAbbreviation.Tb: return lengthInBytes / Factor / Factor / Factor / Factor;
case FileSizeUnitAbbreviation.Pb: return lengthInBytes / Factor / Factor / Factor / Factor / Factor;
default: return lengthInBytes / Factor / Factor / Factor / Factor / Factor / Factor;
}
}
private static decimal ConvertBytesTo(this decimal lengthInBytes, FileSizeUnitAbbreviation unitAbbreviation)
{
switch (unitAbbreviation)
{
case FileSizeUnitAbbreviation.B: return(lengthInBytes);
case FileSizeUnitAbbreviation.Kb: return(lengthInBytes / Factor);
case FileSizeUnitAbbreviation.Mb: return(lengthInBytes / Factor / Factor);
case FileSizeUnitAbbreviation.Gb: return(lengthInBytes / Factor / Factor / Factor);
case FileSizeUnitAbbreviation.Tb: return(lengthInBytes / Factor / Factor / Factor / Factor);
case FileSizeUnitAbbreviation.Pb: return(lengthInBytes / Factor / Factor / Factor / Factor / Factor);
default: return(lengthInBytes / Factor / Factor / Factor / Factor / Factor / Factor);
}
}
public static string ToAbbreviatedFileSize(this long lengthInBytes, int maxPrecision = 2, FileSizeUnitAbbreviation? fileSizeUnitAbbreviation = null)
{
return ((decimal)lengthInBytes).ToAbbreviatedFileSize(maxPrecision, fileSizeUnitAbbreviation);
}