/**
* 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 .
*/
using System;
using System.Collections.Generic;
using System.Text;
namespace Novacoin
{
///
/// Miscellaneous functions
///
public class Interop
{
///
/// Convert array of unsigned integers to array of bytes.
///
/// Array of unsigned integer values.
/// Byte array
public static byte[] LEBytes(uint[] values)
{
var result = new byte[values.Length * sizeof(uint)];
Buffer.BlockCopy(values, 0, result, 0, result.Length);
return result;
}
///
/// Convert byte array to array of unsigned integers.
///
/// Byte array.
/// Array of integers
public static uint[] ToUInt32Array(byte[] bytes)
{
var result = new uint[bytes.Length / sizeof(uint)];
Buffer.BlockCopy(bytes, 0, result, 0, bytes.Length);
return result;
}
///
/// Reverse byte array
///
/// Source array
/// Result array
public static byte[] ReverseBytes(byte[] source)
{
var b = new byte[source.Length];
source.CopyTo(b, 0);
Array.Reverse(b);
return b;
}
public static byte[] HexToArray(string hex)
{
int nChars = hex.Length;
var bytes = new byte[nChars / 2];
for (int i = 0; i < nChars; i += 2)
{
bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16);
}
return bytes;
}
public static byte[] TrimArray(byte[] bytes)
{
int trimStart = bytes.Length - 1;
while (trimStart >= 0 && bytes[trimStart] == 0)
{
trimStart--;
}
byte[] result = new byte[trimStart + 1];
Array.Copy(bytes, 0, result, 0, trimStart + 1);
return result;
}
public static byte[] AppendWithZeros(byte[] bytes, int nTargetLen=32)
{
var result = new byte[nTargetLen];
bytes.CopyTo(result, 0);
return result;
}
public static string ToHex(byte[] bytes)
{
var sb = new StringBuilder();
foreach (var b in bytes)
{
sb.AppendFormat("{0:x2}", b);
}
return sb.ToString();
}
public static uint GetTime()
{
return (uint)(DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds;
}
}
}