private void PrepareNextPacket() {
byte num = (byte)this.baseStream.ReadByte();
byte num2 = (byte)this.baseStream.ReadByte();
byte num3 = (byte)this.baseStream.ReadByte();
int len = (num + (num2 << 8)) + (num3 << 0x10);
this.baseStream.ReadByte();
int num5 = (this.baseStream.ReadByte() + (this.baseStream.ReadByte() << 8)) + (this.baseStream.ReadByte() << 0x10);
if (num5 == 0) {
num5 = len;
this.zInStream = null;
} else {
this.ReadNextPacket(len);
MemoryStream stream = new MemoryStream(this.inBuffer);
this.zInStream = new ZInputStream(stream);
this.zInStream.maxInput = len;
}
this.inPos = 0;
this.maxInPos = num5;
}
public override int Read(byte[] buffer, int offset, int count) {
int num2;
if (buffer == null) {
throw new ArgumentNullException("buffer", Resources.BufferCannotBeNull);
}
if ((offset < 0) || (offset >= buffer.Length)) {
throw new ArgumentOutOfRangeException("offset", Resources.OffsetMustBeValid);
}
if ((offset + count) > buffer.Length) {
throw new ArgumentException(Resources.BufferNotLargeEnough, "buffer");
}
if (this.inPos == this.maxInPos) {
this.PrepareNextPacket();
}
int len = Math.Min(count, this.maxInPos - this.inPos);
if (this.zInStream != null) {
num2 = this.zInStream.read(buffer, offset, len);
} else {
num2 = this.baseStream.Read(buffer, offset, len);
}
this.inPos += num2;
if (this.inPos == this.maxInPos) {
this.zInStream = null;
this.inBufferRef.Target = this.inBuffer;
this.inBuffer = null;
}
return num2;
}
