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using Gestor.Common.Validation;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Runtime.CompilerServices;
namespace Gestor.Common.Helpers
{
public class Functions
{
public static System.Diagnostics.Stopwatch Stopwatch;
public static DateTime? StartTime;
public Functions()
{
}
public static int Compare(string original, string modified)
{
if (original == null)
{
original = "";
}
if (modified == null)
{
modified = "";
}
string str = original.ToLongNullable().ToString();
if (!string.IsNullOrWhiteSpace(str))
{
original = str;
}
str = modified.ToLongNullable().ToString();
if (!string.IsNullOrWhiteSpace(str))
{
modified = str;
}
int length = original.Length;
int num = modified.Length;
int[,] numArray = new int[length + 1, num + 1];
for (int i = 0; i <= length; i++)
{
numArray[i, 0] = i;
}
for (int j = 0; j <= num; j++)
{
numArray[0, j] = j;
}
for (int k = 1; k <= length; k++)
{
for (int l = 1; l <= num; l++)
{
int num1 = modified[l - 1] != original[k - 1];
numArray[k, l] = (new int[] { numArray[k - 1, l] + 1, numArray[k, l - 1] + 1, numArray[k - 1, l - 1] + num1 }).Min();
if (k > 1 && l > 1 && original[k - 1] == modified[l - 2] && original[k - 2] == modified[l - 1])
{
numArray[k, l] = Math.Min(numArray[k, l], numArray[k - 2, l - 2] + num1);
}
}
}
return numArray[length, num];
}
public static DateTime GetNetworkTime()
{
DateTime value;
try
{
if (!Functions.StartTime.HasValue)
{
byte[] numArray = new byte[48];
numArray[0] = 27;
IPEndPoint pEndPoint = new IPEndPoint(((IEnumerable<IPAddress>)Dns.GetHostEntry("time.google.com").AddressList).First<IPAddress>((IPAddress a) => a.AddressFamily == AddressFamily.InterNetwork), 123);
using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
{
socket.Connect(pEndPoint);
socket.ReceiveTimeout = 3000;
socket.Send(numArray);
socket.Receive(numArray);
socket.Close();
}
ulong num = (ulong)numArray[40] << 24 | (ulong)numArray[41] << 16 | (ulong)numArray[42] << 8 | (ulong)numArray[43];
ulong num1 = (ulong)numArray[44] << 24 | (ulong)numArray[45] << 16 | (ulong)numArray[46] << 8 | (ulong)numArray[47];
ulong num2 = num * (long)1000 + num1 * (long)1000 / 4294967296L;
DateTime dateTime = new DateTime(1900, 1, 1);
dateTime = dateTime.AddMilliseconds((double)num2);
Functions.StartTime = new DateTime?(dateTime.ToLocalTime());
Functions.Stopwatch = System.Diagnostics.Stopwatch.StartNew();
value = Functions.StartTime.Value;
}
else
{
value = Functions.StartTime.Value;
value = value.AddMilliseconds((double)Functions.Stopwatch.ElapsedMilliseconds);
}
}
catch (Exception exception)
{
Functions.StartTime = new DateTime?(DateTime.Now);
Functions.Stopwatch = System.Diagnostics.Stopwatch.StartNew();
value = Functions.StartTime.Value;
}
return value;
}
}
}
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