public static Byte[] Transform(string pattern)
{
pattern = Format(pattern);
var length = pattern.Length;
if (length == 0)
{
return(null);
}
var result = new List <Byte>((length + 1) / 2);
if (length % 2 != 0)
{
pattern += "?";
length++;
}
var newbyte = new Byte();
for (int i = 0, j = 0; i < length; i++)
{
var ch = pattern[i];
if (ch == '?') //wildcard
{
if (j == 0)
{
newbyte.N1.Wildcard = true;
}
else
{
newbyte.N2.Wildcard = true;
}
}
else //hex
{
if (j == 0)
{
newbyte.N1.Wildcard = false;
newbyte.N1.Data = (byte)(hexChToInt(ch) & 0xF);
}
else
{
newbyte.N2.Wildcard = false;
newbyte.N2.Data = (byte)(hexChToInt(ch) & 0xF);
}
}
j++;
if (j == 2)
{
j = 0;
result.Add(newbyte);
}
}
return(result.ToArray());
}
public static bool matchByte(byte b, ref Byte p)
{
if (!p.N1.Wildcard) //if not a wildcard we need to compare the data.
{
var n1 = b >> 4;
if (n1 != p.N1.Data) //if the data is not equal b doesn't match p.
{
return(false);
}
}
if (!p.N2.Wildcard) //if not a wildcard we need to compare the data.
{
var n2 = b & 0xF;
if (n2 != p.N2.Data) //if the data is not equal b doesn't match p.
{
return(false);
}
}
return(true);
}