public BlobType GetContentType()
{
if (!IsInitialized)
{
return(BlobType.Empty);
}
// Check if blob starts with key name
var step = FitsKey.EntrySizeInBytes;
var size = FitsKey.NameSize * FitsKey.CharSizeInBytes;
ReadOnlySpan <byte> span = Data;
// If not a key, assume it is data
if (!FitsKey.IsValidKeyName(span.Slice(0, size), true))
{
return(BlobType.Data);
}
// Now check all remaining keys
var counter = 1;
for (var i = 1; i < KeysPerBlob; i++)
{
counter += FitsKey.IsValidKeyName(span.Slice(i * step, size), true) ? 1 : 0;
}
return(counter == KeysPerBlob ? BlobType.FitsHeader : BlobType.Corrupted);
}
public ImmutableArray <IFitsValue> AsKeyCollection()
{
var builder = ImmutableArray.CreateBuilder <IFitsValue>(SizeInBytes / FitsKey.EntrySizeInBytes);
ReadOnlySpan <byte> data = Data;
for (var i = 0; i < KeysPerBlob; i++)
{
var newKey = FitsKey.ParseRawData(data.Slice(i * FitsKey.EntrySizeInBytes));
if (newKey is { })