// Decompiled with JetBrains decompiler
// Type: Rei.Fs.Adler32
// Assembly: Rei.Fs, Version=1.13.2.8796, Culture=neutral, PublicKeyToken=null
// MVID: D8B08A8B-697C-4439-9CFF-1BE4EE46F7B0
// Assembly location: F:\Eigene Dateien\Dropbox\portable Collection\Progs\CarotDAV\Rei.Fs.dll

namespace Rei.Fs
{
  public class Adler32
  {
    private int m_s1;
    private int m_s2;
    private const int modulo = 65521;

    public byte[] Value
    {
      get
      {
        return new byte[4]
        {
          checked ((byte) (this.m_s2 >> 8)),
          checked ((byte) (this.m_s2 & (int) byte.MaxValue)),
          checked ((byte) (this.m_s1 >> 8)),
          checked ((byte) (this.m_s1 & (int) byte.MaxValue))
        };
      }
    }

    public Adler32()
    {
      this.m_s1 = 1;
      this.m_s2 = 0;
    }

    public void Calc(byte[] buf)
    {
      this.Calc(buf, 0, buf.Length);
    }

    public void Calc(byte[] buf, int index, int length)
    {
      int num1 = index;
      int num2 = checked (index + length - 1);
      int index1 = num1;
      while (index1 <= num2)
      {
        this.m_s1 = checked (this.m_s1 + (int) buf[index1]) % 65521;
        this.m_s2 = checked (this.m_s2 + this.m_s1) % 65521;
        checked { ++index1; }
      }
    }
  }
}