Novacoin/CTxOut.cs

   1 \feffusing System;
   2 using System.Text;
   3 using System.Collections.Generic;
   4
   5 namespace Novacoin
   6 {
   7         /// <summary>
   8         /// Transaction output.
   9         /// </summary>
  10         public class CTxOut
  11         {
  12                 /// <summary>
  13                 /// Input value.
  14                 /// </summary>
  15         public long nValue = -1;
  16
  17                 /// <summary>
  18                 /// Second half of script which contains spending instructions.
  19                 /// </summary>
  20         public CScript scriptPubKey;
  21
  22         /// <summary>
  23         /// Initialize new CTxOut instance as a copy of another instance.
  24         /// </summary>
  25         /// <param name="o">CTxOut instance.</param>
  26         public CTxOut(CTxOut o)
  27         {
  28             nValue = o.nValue;
  29             scriptPubKey = o.scriptPubKey;
  30         }
  31
  32         /// <summary>
  33         /// Initialize an empty instance of CTxOut class
  34         /// </summary>
  35         public CTxOut()
  36         {
  37             scriptPubKey = new CScript();
  38         }
  39
  40         /// <summary>
  41         /// Read vout list from byte sequence.
  42         /// </summary>
  43         /// <param name="wBytes">Reference to byte sequence</param>
  44         /// <returns>Outputs array</returns>
  45         public static CTxOut[] ReadTxOutList(ref WrappedList<byte> wBytes)
  46         {
  47             int nOutputs = (int)VarInt.ReadVarInt(ref wBytes);
  48             CTxOut[] vout =new CTxOut[nOutputs];
  49
  50             for (int nIndex = 0; nIndex < nOutputs; nIndex++)
  51             {
  52                 // Fill outputs array
  53                 vout[nIndex] = new CTxOut();
  54                 vout[nIndex].nValue = BitConverter.ToUInt32(wBytes.GetItems(8), 0);
  55
  56                 int nScriptPKLen = (int)VarInt.ReadVarInt(ref wBytes);
  57                 vout[nIndex].scriptPubKey = new CScript(wBytes.GetItems(nScriptPKLen));
  58             }
  59
  60             return vout;
  61         }
  62
  63         /// <summary>
  64         /// Get raw bytes representation of our output.
  65         /// </summary>
  66         /// <returns>Byte sequence.</returns>
  67         public IList<byte> Bytes
  68         {
  69             get
  70             {
  71                 List<byte> resultBytes = new List<byte>();
  72
  73                 resultBytes.AddRange(BitConverter.GetBytes(nValue)); // txout value
  74
  75                 List<byte> s = new List<byte>(scriptPubKey.Bytes);
  76
  77                 resultBytes.AddRange(VarInt.EncodeVarInt(s.Count)); // scriptPubKey length
  78                 resultBytes.AddRange(s); // scriptPubKey
  79
  80                 return resultBytes;
  81             }
  82         }
  83
  84         public void SetNull()
  85         {
  86             nValue = -1;
  87             scriptPubKey.SetNullDestination();
  88         }
  89
  90         public void SetEmpty()
  91         {
  92             nValue = 0;
  93             scriptPubKey.SetNullDestination();
  94         }
  95
  96         public bool IsNull
  97         {
  98             get { return (nValue == -1); }
  99         }
 100
 101         public bool IsEmpty
 102         {
 103            get { return nValue == 0 && scriptPubKey.IsNull; }
 104         }
 105
 106                 public override string ToString ()
 107                 {
 108                         StringBuilder sb = new StringBuilder ();
 109                         sb.AppendFormat ("CTxOut(nValue={0}, scriptPubKey={1})", nValue, scriptPubKey.ToString());
 110
 111                         return sb.ToString ();
 112                 }
 113         }
 114 }
 115