/// <summary>
/// Returns an input stream at a specified location in a stream.
/// </summary>
/// <param name="position">The location in the stream at which to begin.</param>
/// <returns>The input stream.</returns>
public IInputStream GetInputStreamAt(ulong position)
{
BlobReadStream clonedStream = new BlobReadStream(this.originalStream);
clonedStream.Seek((long)position, SeekOrigin.Begin);
return(clonedStream.AsInputStream());
}
/// <summary>
/// Creates a new instance of a IRandomAccessStream over the same resource as the current stream.
/// </summary>
/// <returns>The new stream. The initial, internal position of the stream is 0.</returns>
public IRandomAccessStream CloneStream()
{
BlobReadStream clonedStream = new BlobReadStream(this.originalStream);
return(new BlobReadStreamHelper(clonedStream));
}
/// <summary>
/// Initializes a new instance of the BlobReadStreamHelper class.
/// </summary>
/// <param name="otherStream">An instance of BlobReadStream class that this helper should use.</param>
private BlobReadStreamHelper(BlobReadStream otherStream)
{
this.originalStream = otherStream;
this.originalStreamAsInputStream = this.originalStream.AsInputStream();
}
/// <summary>
/// Initializes a new instance of the BlobReadStreamHelper class.
/// </summary>
/// <param name="blob">Blob reference to read from</param>
/// <param name="accessCondition">An object that represents the access conditions for the blob. If null, no condition is used.</param>
/// <param name="options">An object that specifies additional options for the request.</param>
internal BlobReadStreamHelper(CloudBlob blob, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
{
this.originalStream = new BlobReadStream(blob, accessCondition, options, operationContext);
this.originalStreamAsInputStream = this.originalStream.AsInputStream();
}
/// <summary>
/// Initializes a new instance of the <see cref="BlobReadStream"/> class.
/// </summary>
/// <param name="otherStream">Another BlobReadStream instance to clone.</param>
internal BlobReadStream(BlobReadStream otherStream)
: this(otherStream.blob, otherStream.accessCondition, otherStream.options, otherStream.operationContext)
{
}