NFe.Components.XMLIniFile.ConvertToOEM C# (CSharp) Method

        protected string ConvertToOEM(string FBuffer)
        {
            const string FAnsi = (" áéíóúÁÉÍÓÚçÇàèìòùÀÈÌÒÙãõÃÕºª§ÑâäåêëïîÄÅôûÿÖÜñüÂ");
            const string FOEM = (" aeiouAEIOUcCaeiouAEIOUaoAOoa.NaaaeeiiAAouyOUnuA");
            int L, P;
            char X;
            string result = "";

            for (L = 0; L < FBuffer.Length; ++L)
            {
                X = (char)FBuffer[L];
                P = FAnsi.IndexOf(X);
                if (P >= 0) X = FOEM[P];
                result += X;
            }
            return result;
        }