Minor cleanup
[NovacoinLibrary.git] / Novacoin / CTransaction.cs
index 422c849..9ed33ca 100644 (file)
@@ -1,4 +1,6 @@
 \feffusing System;
+using System.Text;
+using System.Collections.Generic;
 
 namespace Novacoin
 {
@@ -20,22 +22,185 @@ namespace Novacoin
                /// <summary>
                /// Array of transaction inputs
                /// </summary>
-               public CTxIn[] inputs;
+               public CTxIn[] vin;
 
                /// <summary>
                /// Array of transaction outputs
                /// </summary>
-               public CTxOut[] outputs;
+               public CTxOut[] vout;
 
                /// <summary>
                /// Block height or timestamp when transaction is final
                /// </summary>
                public uint nLockTime = 0;
 
-               public CTransaction ()
+        /// <summary>
+        /// Initialize an empty instance
+        /// </summary>
+        public CTransaction()
+        {
+        }
+
+        /// <summary>
+        /// Parse byte sequence and initialize new instance of CTransaction
+        /// </summary>
+        /// <param name="txBytes"></param>
+               public CTransaction (IList<byte> txBytes)
                {
+            WrappedList<byte> wBytes = new WrappedList<byte>(txBytes);
+
+            nVersion = Interop.LEBytesToUInt32(wBytes.GetItems(4));
+            nTime = Interop.LEBytesToUInt32(wBytes.GetItems(4));
+
+            int nInputs = (int)VarInt.ReadVarInt(ref wBytes);
+            vin = new CTxIn[nInputs];
+
+            for (int nCurrentInput = 0; nCurrentInput < nInputs; nCurrentInput++)
+            {
+                // Fill inputs array
+                vin[nCurrentInput] = new CTxIn();
+
+                vin[nCurrentInput].txID = new Hash256(wBytes.GetItems(32));
+                vin[nCurrentInput].n = Interop.LEBytesToUInt32(wBytes.GetItems(4));
+                vin[nCurrentInput].scriptSig = wBytes.GetItems((int)VarInt.ReadVarInt(ref wBytes));
+                vin[nCurrentInput].nSequence = Interop.LEBytesToUInt32(wBytes.GetItems(4));
+            }
+
+            int nOutputs = (int)VarInt.ReadVarInt(ref wBytes);
+            vout = new CTxOut[nOutputs];
+
+            for (int nCurrentOutput = 0; nCurrentOutput < nOutputs; nCurrentOutput++)
+            {
+                // Fill outputs array
+                vout[nCurrentOutput] = new CTxOut();
+                vout[nCurrentOutput].nValue = Interop.LEBytesToUInt64(wBytes.GetItems(8));
+                vout[nCurrentOutput].scriptPubKey = wBytes.GetItems((int)VarInt.ReadVarInt(ref wBytes));
+            }
 
+            nLockTime = Interop.LEBytesToUInt32(wBytes.GetItems(4));
                }
+
+        /// <summary>
+        /// Read transactions array which is encoded in the block body.
+        /// </summary>
+        /// <param name="wTxBytes">Bytes sequence</param>
+        /// <returns>Transactions array</returns>
+        public static CTransaction[] ReadTransactionsList(ref WrappedList<byte> wTxBytes)
+        {
+            CTransaction[] tx;
+            
+            // Read amount of transactions
+            int nTransactions = (int) VarInt.ReadVarInt(ref wTxBytes);
+            tx = new CTransaction[nTransactions];
+
+            for (int nTx = 0; nTx < nTransactions; nTx++)
+            {
+                // Fill the transactions array
+                tx[nTx] = new CTransaction();
+
+                tx[nTx].nVersion = Interop.LEBytesToUInt32(wTxBytes.GetItems(4));
+                tx[nTx].nTime = Interop.LEBytesToUInt32(wTxBytes.GetItems(4));
+
+                // Inputs array
+                tx[nTx].vin = CTxIn.ReadTxInList(ref wTxBytes);
+
+                // outputs array
+                tx[nTx].vout = CTxOut.ReadTxOutList(ref wTxBytes);
+
+                tx[nTx].nLockTime = Interop.LEBytesToUInt32(wTxBytes.GetItems(4));
+            }
+
+            return tx;
+        }
+
+        public IList<byte> ToBytes()
+        {
+            List<byte> resultBytes = new List<byte>();
+
+            // Typical transaction example:
+            //
+            // 01000000 -- version
+            // 78b4c953 -- timestamp
+            // 06       -- amount of txins
+            // 340d96b77ec4ee9d42b31cadc2fab911e48d48c36274d516f226d5e85bbc512c -- txin hash
+            // 01000000 -- txin outnumber
+            // 6b       -- txin scriptSig length
+            // 483045022100c8df1fc17b6ea1355a39b92146ec67b3b53565e636e028010d3a8a87f6f805f202203888b9b74df03c3960773f2a81b2dfd1efb08bb036a8f3600bd24d5ed694cd5a0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
+            // ffffffff -- txin nSequence
+            // 364c640420de8fa77313475970bf09ce4d0b1f8eabb8f1d6ea49d90c85b202ee -- txin hash
+            // 01000000 -- txin outnumber
+            // 6b       -- txin scriptSig length
+            // 483045022100b651bf3a6835d714d2c990c742136d769258d0170c9aac24803b986050a8655b0220623651077ff14b0a9d61e30e30f2c15352f70491096f0ec655ae1c79a44e53aa0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
+            // ffffffff -- txin nSequence
+            // 7adbd5f2e521f567bfea2cb63e65d55e66c83563fe253464b75184a5e462043d -- txin hash
+            // 00000000 -- txin outnumber
+            // 6a       -- txin scriptSig length
+            // 4730440220183609f2b995993acc9df241aff722d48b9a731b0cd376212934565723ed81f00220737e7ce75ef39bdc061d0dcdba3ee24e43b899696a7c96803cee0a79e1f78ecb0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
+            // ffffffff -- txin nSequence
+            // 999eb03e00a41c2f9fde8865a554ceebbc48d30f4c8ba22dd88da8c9b46fa920 -- txin hash
+            // 03000000 -- txin outnumber
+            // 6b       -- txin scriptSig length
+            // 483045022100ec1ab104ef086ba79b0f2611ebf1bfdd22a7a1020f6630fa1c6707546626e0db022056093d4048a999392185ccc735ef736a5497bd68f60b42e6c0c93ba770b54d010121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
+            // ffffffff -- txin nSequence
+            // c0543b86be257ddd85b014a76718a70fab9eaa3c477460e4ca187094d86f369c -- txin hash
+            // 05000000 -- txin outnumber
+            // 69       -- txin scriptSig length
+            // 463043021f24275c72f952043174daf01d7f713f878625f0522124a3cab48a0a2e12604202201b47742e6697b0ebdd1e4ba49c74baf142a0228ad0e0ee847488994c9dce78470121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
+            // ffffffff -- txin nSequence
+            // e1793d4519147782293dd1db6d90e461265d91db2cc6889c37209394d42ad10d -- txin hash
+            // 05000000 -- txin outnumber
+            // 6a       -- txin scriptSig length
+            // 473044022018a0c3d73b2765d75380614ab36ee8e3c937080894a19166128b1e3357b208fb0220233c9609985f535547381431526867ad0255ec4969afe5c360544992ed6b3ed60121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
+            // ffffffff -- txin nSequence
+            // 02 -- amount of txouts
+            // e542000000000000 -- txout value
+            // 19 -- scriptPubKey length
+            // 76a91457d84c814b14bd86bf32f106b733baa693db7dc788ac -- scriptPubKey
+            // 409c000000000000 -- txout value
+            // 19 -- scriptPubKey length
+            // 76a91408c8768d5d6bf7c1d9609da4e766c3f1752247b188ac -- scriptPubKey
+            // 00000000 -- lock time
+
+            resultBytes.AddRange(Interop.LEBytes(nVersion));
+            resultBytes.AddRange(Interop.LEBytes(nTime));
+            resultBytes.AddRange(VarInt.EncodeVarInt(vin.LongLength));
+
+            foreach(CTxIn input in vin)
+            {
+                resultBytes.AddRange(input.ToBytes());
+            }
+
+            resultBytes.AddRange(VarInt.EncodeVarInt(vout.LongLength));
+            
+            foreach(CTxOut output in vout)
+            {
+                resultBytes.AddRange(output.ToBytes());
+            }
+
+            resultBytes.AddRange(Interop.LEBytes(nLockTime));
+
+            return resultBytes;
+        }
+
+        public override string ToString()
+        {
+            StringBuilder sb = new StringBuilder();
+
+            sb.AppendFormat("CTransaction(\n nVersion={0},\n nTime={1},\n", nVersion, nTime);
+
+            foreach (CTxIn txin in vin)
+            {
+                sb.AppendFormat(" {0},\n", txin.ToString());
+            }
+
+            foreach (CTxOut txout in vout)
+            {
+                sb.AppendFormat(" {0},\n", txout.ToString());
+            }
+
+            sb.AppendFormat("\nnLockTime={0}\n)", nLockTime);
+
+            return sb.ToString();
+        }
        }
 }
-