// ========= USAGE 3 =========
// int BaseEncoding.GetEncodeCount(int length)
// int BaseEncoding.Encode(byte[] bytesIn, int offsetIn, int lengthIn, char[] charsOut, int offsetOut)
// int BaseEncoding.GetDecodeCount(char[] chars, int offset, int length)
// int BaseEncoding.Decode(char[] charsIn, int offsetIn, int lengthIn, byte[] bytesOut, int offsetOut)
static void Usage3(string testName, BaseEncoding encoding, string testVector)
{
int encodeOffset = 99, decodeOffset = 199;
byte[] origin = Encoding.Default.GetBytes(testVector);
byte[] originBuffer = WrapArray <byte>(origin, 33, 44);
char[] baseCharsBuffer = new char[encoding.GetEncodeCount(origin.Length) + encodeOffset * 2];
// == encode
int encodeNum = encoding.Encode(originBuffer, 33, origin.Length, baseCharsBuffer, encodeOffset);
// ==
byte[] binBuffer = new byte[encoding.GetDecodeCount(baseCharsBuffer, encodeOffset, encodeNum) + decodeOffset * 2];
// == decode
int decodeNum = encoding.Decode(baseCharsBuffer, encodeOffset, encodeNum, binBuffer, decodeOffset);
// ====== result
char[] baseChars = SubArray <char>(baseCharsBuffer, encodeOffset, encodeNum);
byte[] binData = SubArray <byte>(binBuffer, decodeOffset, decodeNum);
// == output
Console.WriteLine("[" + testName + "]\tVector: " + testVector + "\tBaseString: "
+ new string(baseChars) + "\t" + (ArrayEquals(origin, binData) ? "Success" : "failed"));
}
