// Decompiled with JetBrains decompiler
// Type: SevenZip.Buffer.InBuffer
// Assembly: P4CTEMP, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
// MVID: 7BE4E538-8555-4C2E-974B-99E556F5462C
// Assembly location: C:\Users\Administrateur\Downloads\Virusshare-00000-msil\Trojan-Ransom.Win32.Gimemo.ayt-624a52079bf1703bcd3bcc9d2d3716b6126fd05655e25289d19142f9aae02eb5.exe

using System;
using System.IO;

namespace SevenZip.Buffer
{
  public class InBuffer
  {
    private byte[] m_Buffer;
    private uint m_Pos;
    private uint m_Limit;
    private uint m_BufferSize;
    private Stream m_Stream;
    private bool m_StreamWasExhausted;
    private ulong m_ProcessedSize;

    public InBuffer(uint bufferSize)
    {
      this.m_Buffer = new byte[(IntPtr) bufferSize];
      this.m_BufferSize = bufferSize;
    }

    public void Init(Stream stream)
    {
      this.m_Stream = stream;
      this.m_ProcessedSize = 0UL;
      this.m_Limit = 0U;
      this.m_Pos = 0U;
      this.m_StreamWasExhausted = false;
    }

    public bool ReadBlock()
    {
      if (this.m_StreamWasExhausted)
        return false;
      this.m_ProcessedSize += (ulong) this.m_Pos;
      int num = this.m_Stream.Read(this.m_Buffer, 0, (int) this.m_BufferSize);
      this.m_Pos = 0U;
      this.m_Limit = (uint) num;
      this.m_StreamWasExhausted = num == 0;
      return !this.m_StreamWasExhausted;
    }

    public void ReleaseStream() => this.m_Stream = (Stream) null;

    public bool ReadByte(byte b)
    {
      if (this.m_Pos >= this.m_Limit && !this.ReadBlock())
        return false;
      b = this.m_Buffer[(IntPtr) this.m_Pos++];
      return true;
    }

    public byte ReadByte() => this.m_Pos >= this.m_Limit && !this.ReadBlock() ? byte.MaxValue : this.m_Buffer[(IntPtr) this.m_Pos++];

    public ulong GetProcessedSize() => this.m_ProcessedSize + (ulong) this.m_Pos;
  }
}