public sealed override void Write(byte[] array, int offset, int count)
{
this.AssertOpen();
if (!this.CanWrite)
{
throw new NotSupportedException(EncodersStrings.EncStrCannotWrite);
}
if (array == null)
{
throw new ArgumentNullException("array");
}
if (count + offset > array.Length)
{
throw new ArgumentException(EncodersStrings.EncStrLengthExceeded(offset + count, array.Length), "array");
}
if (0 > offset || 0 > count)
{
throw new ArgumentOutOfRangeException((offset < 0) ? "offset" : "count");
}
while (count != 0)
{
int num;
int count2;
bool flag;
this.encoder.Convert(array, offset, count, this.buffer, 0, this.buffer.Length, false, out num, out count2, out flag);
count -= num;
offset += num;
this.position += (long)num;
this.stream.Write(this.buffer, 0, count2);
}
}
public sealed override int Read(byte[] array, int offset, int count)
{
this.AssertOpen();
if (!this.CanRead)
{
throw new NotSupportedException(EncodersStrings.EncStrCannotRead);
}
if (array == null)
{
throw new ArgumentNullException("array");
}
if (offset + count > array.Length)
{
throw new ArgumentOutOfRangeException("offset, count", EncodersStrings.EncStrLengthExceeded(offset + count, array.Length));
}
if (0 > offset || 0 > count)
{
throw new ArgumentOutOfRangeException((offset < 0) ? "offset" : "count");
}
int num = 0;
while (!this.endOfFile && count != 0)
{
if (this.bufferCount == 0)
{
this.bufferPos = 0;
this.bufferCount = this.stream.Read(this.buffer, 0, 4096);
}
int num2;
int num3;
bool flag;
this.encoder.Convert(this.buffer, this.bufferPos, this.bufferCount, array, offset, count, this.bufferCount == 0, out num2, out num3, out flag);
if (this.bufferCount == 0 && flag)
{
this.endOfFile = true;
}
count -= num3;
offset += num3;
num += num3;
this.position += (long)num3;
this.bufferPos += num2;
this.bufferCount -= num2;
}
return(num);
}