Generic class was a bit excessive for our purposes

[NovacoinLibrary.git] / Novacoin / CTxIn.cs

diff --git a/Novacoin/CTxIn.cs b/Novacoin/CTxIn.cs
index c3b2fc5..8cff600 100644 (file)
--- a/Novacoin/CTxIn.cs
+++ b/Novacoin/CTxIn.cs
@@ -9,50 +9,118 @@ namespace Novacoin
        /// </summary>
        public class CTxIn
        {
-               /// <summary>
-               /// Hash of parent transaction.
-               /// </summary>
-               private Hash256 txID = new Hash256();
-
-               /// <summary>
-               /// Parent input number.
-               /// </summary>
-               private uint nInput = 0;
+        /// <summary>
+        /// Previous input data
+        /// </summary>
+        public COutPoint prevout;
 
                /// <summary>
                /// First half of script, signatures for the scriptPubKey
                /// </summary>
-               private byte[] scriptSig;
+        public CScript scriptSig;
 
                /// <summary>
                /// Transaction variant number, irrelevant if nLockTime isn't specified. Its value is 0xffffffff by default.
                /// </summary>
-               private uint nSequence = 0xffffffff;
+        public uint nSequence = uint.MaxValue;
 
-               public CTxIn ()
-               {
-               }
+        /// <summary>
+        /// Initialize new CTxIn instance as copy of another one.
+        /// </summary>
+        /// <param name="i">CTxIn instance.</param>
+        public CTxIn(CTxIn i)
+        {
+            prevout = new COutPoint(i.prevout);
+            scriptSig = i.scriptSig;
+            nSequence = i.nSequence;
+        }
+
+        /// <summary>
+        /// Initialize an empty instance of CTxIn class
+        /// </summary>
+        public CTxIn()
+        {
+            prevout = new COutPoint();
+            scriptSig = new CScript();
+        }
+
+        /// <summary>
+        /// Read vin list from byte sequence.
+        /// </summary>
+        /// <param name="wBytes">Reference to byte sequence</param>
+        /// <returns>Inputs array</returns>
+        public static CTxIn[] ReadTxInList(ref ByteQueue wBytes)
+        {
+            CTxIn[] vin;
+
+            // Get amount
+            int nInputs = (int)VarInt.ReadVarInt(ref wBytes);
+            vin = new CTxIn[nInputs];
 
-        public IList<byte> ToBytes()
+            for (int nIndex = 0; nIndex < nInputs; nIndex++)
+            {
+                // Fill inputs array
+                vin[nIndex] = new CTxIn();
+                vin[nIndex].prevout = new COutPoint(wBytes.Get(36));
+                vin[nIndex].scriptSig = new CScript(wBytes.Get((int)VarInt.ReadVarInt(ref wBytes)));
+                vin[nIndex].nSequence = BitConverter.ToUInt32(wBytes.Get(4), 0);
+            }
+
+            // Return inputs array
+            return vin;
+        }
+
+        /// <summary>
+        /// Get raw bytes representation of our input.
+        /// </summary>
+        /// <returns>Byte sequence.</returns>
+        public IList<byte> Bytes
         {
-            List<byte> inputBytes = new List<byte>();
+            get
+            {
+                List<byte> inputBytes = new List<byte>();
+
+                inputBytes.AddRange(prevout.Bytes); // prevout
 
+                List<byte> s = new List<byte>(scriptSig.Bytes);
 
-            inputBytes.AddRange(txID.hashBytes); // Input transaction id
-            inputBytes.AddRange(Interop.LEBytes(nInput)); // Input number
-            inputBytes.AddRange(VarInt.EncodeVarInt(scriptSig.LongLength)); // Scriptsig length
-            inputBytes.AddRange(scriptSig); // ScriptSig
-            inputBytes.AddRange(Interop.LEBytes(nSequence)); // Sequence
+                inputBytes.AddRange(VarInt.EncodeVarInt(s.Count)); // scriptSig length
+                inputBytes.AddRange(s); // scriptSig
+                inputBytes.AddRange(BitConverter.GetBytes(nSequence)); // Sequence
 
-            return inputBytes;
+                return inputBytes;
+            }
         }
 
-               public override string ToString ()
+        public bool IsFinal
+        {
+            get { return (nSequence == uint.MaxValue); }
+        }
+        public override string ToString ()
                {
                        StringBuilder sb = new StringBuilder ();
-                       sb.AppendFormat ("CTxIn(txId={0},n={1},scriptSig={2}", nInput, nInput, scriptSig.ToString());
 
-                       return sb.ToString ();
+            sb.AppendFormat("CTxIn(");
+            sb.Append(prevout.ToString());
+
+            if(prevout.IsNull)
+            {
+                sb.AppendFormat(", coinbase={0}", Interop.ToHex(scriptSig.Bytes));
+            }
+            else
+            {
+                sb.AppendFormat(", scriptsig={0}", scriptSig.ToString());
+            }
+
+            if (nSequence != uint.MaxValue)
+            {
+                sb.AppendFormat(", nSequence={0}", nSequence);
+            }
+
+            sb.Append(")");
+
+
+            return sb.ToString ();
                }
 
        }