112     const char* encode;  in Encode()  local
114         encode = default_encode;  in Encode()
116         encode = encodeMap;  in Encode()
131             *dst++ = encode[a];  in Encode()
132             *dst++ = encode[b];  in Encode()
133             *dst++ = encode[c];  in Encode()
134             *dst++ = encode[d];  in Encode()
146             *dst++ = encode[a >> 2];  in Encode()
147             *dst++ = encode[(k1 | a << 4) & 0x3F];  in Encode()
148             *dst++ = encode[k2];  in Encode()
149             *dst++ = encode[EncodePad];  in Encode()