private static bool IsMatchingType(IList <byte> input, FileTypeInfo type)
{
// find an initial match based on the header and offset
var isMatch = FindMatch(input, type.Header, type.Offset);
// some file types (Microsoft) have the same header
// but different signature in another location, if its one of these determine what the true file type is
if (isMatch && type.AdditionalIdentifier.Length > 0)
{
// find all indices of matching the 1st byte of the additional sequence
var matchingIndices = input.Select((b, i) => b == type.AdditionalIdentifier[0] ? i : -1).Where(i => i != -1).ToList();
// investigate all of them for a match
isMatch = matchingIndices.Any(i => FindMatch(input, type.AdditionalIdentifier, i));
}
return(isMatch);
}
private static bool IsMatchingType(IList<byte> input, FileTypeInfo type)
{
// find an initial match based on the header and offset
var isMatch = FindMatch(input, type.Header, type.Offset);
// some file types (Microsoft) have the same header
// but different signature in another location, if its one of these determine what the true file type is
if (isMatch && type.AdditionalIdentifier.Length > 0)
{
// find all indices of matching the 1st byte of the additional sequence
var matchingIndices = input.Select((b, i) => b == type.AdditionalIdentifier[0] ? i : -1).Where(i => i != -1).ToList();
// investigate all of them for a match
isMatch = matchingIndices.Any(i => FindMatch(input, type.AdditionalIdentifier, i));
}
return isMatch;
}
