/// <summary>
/// Decode a share code from the string.
/// </summary>
/// <param name="shareCode"></param>
/// <returns></returns>
public static ShareCodeStruct Decode(string shareCode)
{
Regex r = new Regex(SHARECODE_PATTERN);
if (!r.IsMatch(shareCode))
{
throw new ShareCodePatternException();
}
string code = shareCode.Remove(0, 4).Replace("-", "");
BigInteger big = BigInteger.Zero;
foreach (char c in code.ToCharArray().Reverse())
{
big = BigInteger.Multiply(big, DICTIONARY.Length) + DICTIONARY.IndexOf(c);
}
byte[] matchIdBytes = new byte[sizeof(UInt64)];
byte[] outcomeIdBytes = new byte[sizeof(UInt64)];
byte[] tvPortIdBytes = new byte[sizeof(UInt32)];
byte[] all = big.ToByteArray().ToArray();
// sometimes the number isn't unsigned, add a 00 byte at the end of the array to make sure it is
if (all.Length != 2 * sizeof(UInt64) + sizeof(UInt16))
{
all = all.Concat(new byte[] { 0 }).ToArray();
}
all = all.Reverse().ToArray();
Array.Copy(all, 0, matchIdBytes, 0, sizeof(UInt64));
Array.Copy(all, sizeof(UInt64), outcomeIdBytes, 0, sizeof(UInt64));
Array.Copy(all, 2 * sizeof(UInt64), tvPortIdBytes, 0, sizeof(UInt16));
ShareCodeStruct s = new ShareCodeStruct
{
MatchId = BitConverter.ToUInt64(matchIdBytes, 0),
OutcomeId = BitConverter.ToUInt64(outcomeIdBytes, 0),
TokenId = BitConverter.ToUInt32(tvPortIdBytes, 0),
};
return(s);
}
/// <summary>
/// Decode a share code from the string.
/// </summary>
/// <param name="shareCode"></param>
/// <returns></returns>
public static ShareCodeStruct Decode(string shareCode)
{
Regex r = new Regex(SHARECODE_PATTERN);
if (!r.IsMatch(shareCode))
{
throw new ShareCodePatternException();
}
string code = shareCode.Remove(0, 4).Replace("-", "");
BigInteger big = BigInteger.Zero;
foreach (char c in code.ToCharArray().Reverse())
{
big = BigInteger.Multiply(big, DICTIONARY.Length) + DICTIONARY.IndexOf(c);
}
byte[] matchIdBytes = new byte[sizeof(UInt64)];
byte[] outcomeIdBytes = new byte[sizeof(UInt64)];
byte[] tvPortIdBytes = new byte[sizeof(UInt32)];
byte[] all = big.ToByteArray().Reverse().ToArray();
// there is an additional byte in BitInteger which represent positive values
Array.Copy(all, 1, matchIdBytes, 0, sizeof(UInt64));
Array.Copy(all, 1 + sizeof(UInt64), outcomeIdBytes, 0, sizeof(UInt64));
Array.Copy(all, 1 + 2 * sizeof(UInt64), tvPortIdBytes, 0, sizeof(UInt16));
ShareCodeStruct s = new ShareCodeStruct
{
MatchId = BitConverter.ToUInt64(matchIdBytes, 0),
OutcomeId = BitConverter.ToUInt64(outcomeIdBytes, 0),
TokenId = BitConverter.ToUInt32(tvPortIdBytes, 0),
};
return(s);
}