private static unsafe void EvaluateContentSignatures(Stream fileStream, Evaluator evaluator)
{
fileStream.Seek(0, SeekOrigin.Begin);
var matches = SignatureScanner.Scan(_fileContentSignatures, fileStream);
foreach (var match in matches)
{
foreach (var type in _signatureTypeLookup[match.Signature])
{
evaluator.Add(type, POINTS_SIG_CONTENT);
}
}
}
private static unsafe void EvaluateMagicSignatures(Stream fileStream, Evaluator evaluator)
{
fileStream.Seek(0, SeekOrigin.Begin);
var alloc = new byte[_longestMagicSignatureLength];
var bytesRead = fileStream.Read(alloc);
var buffer = new Memory <byte>(alloc, 0, Math.Min(bytesRead, _longestMagicSignatureLength));
var matches = SignatureScanner.Scan(_fileMagicSignatures, buffer.Slice(0, bytesRead));
foreach (var match in matches)
{
if (match.Offset != 0)
{
continue;
}
foreach (var type in _signatureTypeLookup[match.Signature])
{
evaluator.Add(type, POINTS_SIG_MAGIC);
}
}
}