Decode() [3/4]

static void System.Xml.BinHexDecoder.Decode ( ReadOnlySpan< char > chars, Span< byte > bytes, ref bool hasHalfByteCached, ref byte cachedHalfByte, out int charsDecoded, out int bytesDecoded )

inlinestaticprivate

Definition at line 115 of file BinHexDecoder.cs.

    {
        int num = 0;
        int i;
        for (i = 0; i < chars.Length; i++)
        {
            if ((uint)num >= (uint)bytes.Length)
            {
                break;
            }
            char c = chars[i];
            int num2 = System.HexConverter.FromChar(c);
            if (num2 != 255)
            {
                byte b = (byte)num2;
                if (hasHalfByteCached)
                {
                    bytes[num++] = (byte)((cachedHalfByte << 4) + b);
                    hasHalfByteCached = false;
                }
                else
                {
                    cachedHalfByte = b;
                    hasHalfByteCached = true;
                }
            }
            else if (!XmlCharType.IsWhiteSpace(c))
            {
                throw new XmlException(System.SR.Xml_InvalidBinHexValue, chars.ToString());
            }
        }
        bytesDecoded = num;
        charsDecoded = i;
    }

References System.bytes, System.chars, System.Xml.Dictionary, System.HexConverter.FromChar(), System.Xml.XmlCharType.IsWhiteSpace(), System.SR.Xml_InvalidBinHexValue, and System.Xml.XmlException.