public static FileSizeFormatSize GetFileSizeRange(decimal size)
{
FileSizeFormatSize range = FileSizeFormatSize.PB;
string suffix = null;
while (suffix == null)
{
if (size > sizes[(int)range])
{
size /= sizes[(int)range];
suffix = range.ToString();
}
else
{
if (--range == 0)
{
suffix = range.ToString();
}
}
}
return(range);
}
public string Format(string format, object arg, IFormatProvider formatProvider)
{
if (format == null || !format.StartsWith(fileSizeFormat))
{
return(defaultFormat(format, arg, formatProvider));
}
if (arg is string)
{
return(defaultFormat(format, arg, formatProvider));
}
string precision;
FileSizeFormatSize range = FileSizeFormatSize.B;
bool hasRange = false;
bool noSuffix = false;
if (format.Contains(","))
{
var args = format.Split(',');
precision = args[0].Substring(2);
string r = args[1];
if (r.EndsWith("!"))
{
noSuffix = true;
r = r.Substring(0, r.Length - 1);
}
hasRange = true;
range = (FileSizeFormatSize)Enum.Parse(typeof(FileSizeFormatSize), r);
}
else
{
range = FileSizeFormatSize.PB;
precision = format.Substring(2);
}
if (String.IsNullOrEmpty(precision))
{
precision = _default_precision.ToString();
}
Decimal size;
try
{
size = Convert.ToDecimal(arg);
}
catch (InvalidCastException)
{
return(defaultFormat(format, arg, formatProvider));
}
string suffix = null;
if (hasRange)
{
suffix = range.ToString();
size /= sizes[(int)range];
}
else
{
while (suffix == null)
{
if (size > sizes[(int)range])
{
size /= sizes[(int)range];
suffix = range.ToString();
}
else
{
if (--range == 0)
{
suffix = range.ToString();
}
}
}
}
if (range == FileSizeFormatSize.B || size == 0)
{
precision = "0";
}
return(noSuffix ? String.Format("{0:N" + precision + "}", size) : String.Format("{0:N" + precision + "} {1}", size, suffix));
}
public static string ToFileSizeString(this long size, FileSizeFormatSize range, bool suffix = true, int precision = default_precision)
{
return(String.Format(_talk_bytes, "{0:fs" + precision.ToString() + "," + range.ToString() + (suffix ? "":"!") + "}", size));
}
