/// <summary>
/// Converts standard Stream to IDataStream.
/// </summary>
/// <param name="stream">Stream to convert. Must be readable.</param>
/// <returns></returns>
/// <remarks>
/// Note that if stream doesn't support seeking then it will be read entirely to memory.
/// </remarks>
public static IDataStream ToIDataStream(Stream stream)
{
if (!stream.CanRead)
{
throw new ArgumentException("Stream must be readable!");
}
if (stream.CanSeek)
{
return(new FromStream(stream));
}
else
{
var list = new StreamList();
int bytesRead = 0;
var buffer = new byte[4096];
do
{
// ByteArray's constructor copies the data, so there is no need to clear the buffer
bytesRead = stream.Read(buffer, 0, buffer.Length);
if (bytesRead > 0)
{
list.Add(new ByteArray(buffer, 0, bytesRead));
}
} while (bytesRead > 0);
list.Freeze();
return(list);
}
}
/// <summary>
/// Appends data to builded stream
/// </summary>
/// <remarks>
/// With large lengthThreshold it will take a while to create the LoggedFile.
/// </remarks>
/// <param name="data"></param>
/// <exception cref="ArgumentNullException">data</exception>
public void Append(IDataStream data)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
if (length >= threshold)
{
fileBuilder.Append(data);
}
else if (length + data.Length >= threshold)
{
fileBuilder = logger.CreateFileBuilder();
fileBuilder.Append(list);
fileBuilder.Append(data);
list = null;
}
else
{
list.Add((IDataStream)data.Clone());
}
length += data.Length;
}