private static SwapHeader ReadSwapHeader(Stream stream)
{
if (stream.Length < SwapHeader.PageSize)
{
return(null);
}
stream.Position = 0;
byte[] headerData = StreamUtilities.ReadFully(stream, SwapHeader.PageSize);
SwapHeader header = new SwapHeader();
header.ReadFrom(headerData, 0);
return(header);
}
/// <summary>
/// Detects if a stream contains a Swap file system.
/// </summary>
/// <param name="stream">The stream to inspect.</param>
/// <returns><c>true</c> if the stream appears to be a Swap file system, else <c>false</c>.</returns>
public static bool Detect(Stream stream)
{
SwapHeader header = ReadSwapHeader(stream);
return(header != null && (header.Magic == SwapHeader.Magic1 || header.Magic == SwapHeader.Magic2));
}