X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=Novacoin%2FCTxOut.cs;h=eb24845cbd503f15d2c0b6714fdb512a496ba074;hb=be9d844557911f95165d2c9875c4f5b2822cfc92;hp=b072985b0b9c1332377b7bc22f384d4d6865bc31;hpb=b5794452d82d72e14ecfa8fa236654201d271aaa;p=NovacoinLibrary.git

diff --git a/Novacoin/CTxOut.cs b/Novacoin/CTxOut.cs
index b072985..eb24845 100644
--- a/Novacoin/CTxOut.cs
+++ b/Novacoin/CTxOut.cs
@@ -1,21 +1,150 @@
-using System;
+/**
+ *  Novacoin classes library
+ *  Copyright (C) 2015 Alex D. (balthazar.ad@gmail.com)
+
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as
+ *  published by the Free Software Foundation, either version 3 of the
+ *  License, or (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+using System;
+using System.Text;
+using System.Collections.Generic;
+using System.IO;
 
 namespace Novacoin
 {
+	/// <summary>
+	/// Transaction output.
+	/// </summary>
 	public class CTxOut
 	{
 		/// <summary>
 		/// Input value.
 		/// </summary>
-		public ulong nValue;
+        public ulong nValue = ulong.MaxValue;
 
 		/// <summary>
 		/// Second half of script which contains spending instructions.
 		/// </summary>
-		public byte[] scriptPubKey;
+        public CScript scriptPubKey;
+
+        /// <summary>
+        /// Initialize new CTxOut instance as a copy of another instance.
+        /// </summary>
+        /// <param name="o">CTxOut instance.</param>
+        public CTxOut(CTxOut o)
+        {
+            nValue = o.nValue;
+            scriptPubKey = o.scriptPubKey;
+        }
+
+        /// <summary>
+        /// Initialize an empty instance of CTxOut class
+        /// </summary>
+        public CTxOut()
+        {
+            SetEmpty();
+        }
+
+        /// <summary>
+        /// Read vout list from byte sequence.
+        /// </summary>
+        /// <param name="wBytes">Reference to byte sequence</param>
+        /// <returns>Outputs array</returns>
+        public static CTxOut[] ReadTxOutList(ref ByteQueue wBytes)
+        {
+            int nOutputs = (int)wBytes.GetVarInt();
+            var vout =new CTxOut[nOutputs];
+
+            for (int nIndex = 0; nIndex < nOutputs; nIndex++)
+            {
+                // Fill outputs array
+                vout[nIndex] = new CTxOut();
+                vout[nIndex].nValue = BitConverter.ToUInt64(wBytes.Get(8), 0);
+
+                int nScriptPKLen = (int)wBytes.GetVarInt();
+                vout[nIndex].scriptPubKey = new CScript(wBytes.Get(nScriptPKLen));
+            }
+
+            return vout;
+        }
+
+        /// <summary>
+        /// Get raw bytes representation of our output.
+        /// </summary>
+        /// <returns>Byte sequence.</returns>
+        public static implicit operator byte[] (CTxOut output)
+        {
+            var stream = new MemoryStream();
+            var writer = new BinaryWriter(stream);
 
-		public CTxOut ()
+            writer.Write(output.nValue); // txout value
+            writer.Write(VarInt.EncodeVarInt(output.scriptPubKey.Size)); // scriptPubKey length
+            writer.Write(output.scriptPubKey);  // scriptPubKey
+
+            var resultBytes = stream.ToArray();
+
+            writer.Close();
+
+            return resultBytes;
+        }
+
+        /// <summary>
+        /// Null prevouts have -1 value
+        /// </summary>
+        public void SetNull()
+        {
+            nValue = ulong.MaxValue;
+            scriptPubKey = new CScript();
+        }
+
+        /// <summary>
+        /// Empty outputs have zero value and empty scriptPubKey
+        /// </summary>
+        public void SetEmpty()
+        {
+            nValue = 0;
+            scriptPubKey = new CScript();
+        }
+
+        public bool IsNull
+        {
+            get { return (nValue == ulong.MaxValue); }
+        }
+
+        public bool IsEmpty
+        {
+           get { return nValue == 0 && scriptPubKey.IsNull; }
+        }
+
+        /// <summary>
+        /// Serialized size
+        /// </summary>
+        public int Size
+        {
+            get
+            {
+                var nScriptSize = scriptPubKey.Size;
+                return 8 + VarInt.GetEncodedSize(nScriptSize) + nScriptSize;
+            }
+        }
+
+        public override string ToString ()
 		{
+			var sb = new StringBuilder ();
+			sb.AppendFormat ("CTxOut(nValue={0}, scriptPubKey={1})", nValue, scriptPubKey.ToString());
+
+			return sb.ToString ();
 		}
 	}
 }