/// <summary>
/// Checks that the header values are sensible, and throws an exception otherwise.
/// </summary>
public static BFastPreamble Validate(this BFastPreamble preamble)
{
if (preamble.Magic != Constants.SameEndian && preamble.Magic != Constants.SwappedEndian)
{
throw new Exception($"Invalid magic number {preamble.Magic}");
}
if (preamble.DataStart < BFastPreamble.Size)
{
throw new Exception($"Data start {preamble.DataStart} cannot be before the file header size {BFastPreamble.Size}");
}
if (preamble.DataStart > preamble.DataEnd)
{
throw new Exception($"Data start {preamble.DataStart} cannot be after the data end {preamble.DataEnd}");
}
if (!IsAligned(preamble.DataEnd))
{
throw new Exception($"Data end {preamble.DataEnd} should be aligned");
}
if (preamble.NumArrays < 0)
{
throw new Exception($"Number of arrays {preamble.NumArrays} is not a positive number");
}
if (preamble.NumArrays > preamble.DataEnd)
{
throw new Exception($"Number of arrays {preamble.NumArrays} can't be more than the total size");
}
if (preamble.RangesEnd > preamble.DataStart)
{
throw new Exception($"End of range {preamble.RangesEnd} can't be after data-start {preamble.DataStart}");
}
return(preamble);
}
public bool Equals(BFastPreamble other) => Magic == other.Magic && DataStart == other.DataStart && DataEnd == other.DataEnd && NumArrays == other.NumArrays;