public static string ToString(byte[] input, Action <Base32EncodingOptions> optionsFunc = null)
{
var defaultOptions = new Base32EncodingOptions {
OmitPadding = false
};
optionsFunc?.Invoke(defaultOptions);
return(ToString(input, defaultOptions));
}
public static string ToString(byte[] input, Base32EncodingOptions options)
{
if (input == null || input.Length == 0)
{
throw new ArgumentNullException("input");
}
var charCount = (int)Math.Ceiling(input.Length / 5d) * 8;
var returnArray = new char[charCount];
byte nextChar = 0, bitsRemaining = 5;
var arrayIndex = 0;
foreach (var b in input)
{
nextChar = (byte)(nextChar | (b >> (8 - bitsRemaining)));
returnArray[arrayIndex++] = ValueToChar(nextChar);
if (bitsRemaining < 4)
{
nextChar = (byte)((b >> (3 - bitsRemaining)) & 31);
returnArray[arrayIndex++] = ValueToChar(nextChar);
bitsRemaining += 5;
}
bitsRemaining -= 3;
nextChar = (byte)((b << bitsRemaining) & 31);
}
//if we didn't end with a full char
if (arrayIndex != charCount)
{
returnArray[arrayIndex++] = ValueToChar(nextChar);
if (!options.OmitPadding)
{
while (arrayIndex != charCount)
{
returnArray[arrayIndex++] = '='; //padding
}
}
}
return(new string(returnArray.Slice(0, arrayIndex)));
}
