//<summary> /// Read in a JSON string containing base-64 encoded data and decode it. ///</summary> private byte[] ReadJSONBase64() { byte[] b = ReadJSONString(false); int len = b.Length; int off = 0; int size = 0; while (len >= 4) { // Decode 4 bytes at a time TBase64Utils.decode(b, off, 4, b, size); // NB: decoded in place off += 4; len -= 4; size += 3; } // Don't decode if we hit the end or got a single leftover byte (invalid // base64 but legal for skip of regular string type) if (len > 1) { // Decode remainder TBase64Utils.decode(b, off, len, b, size); // NB: decoded in place size += len - 1; } // Sadly we must copy the byte[] (any way around this?) byte[] result = new byte[size]; Array.Copy(b, 0, result, 0, size); return(result); }
///<summary> /// Write out contents of byte array b as a JSON string with base-64 encoded /// data ///</summary> private void WriteJSONBase64(byte[] b) { context.Write(); trans.Write(QUOTE); int len = b.Length; int off = 0; while (len >= 3) { // Encode 3 bytes at a time TBase64Utils.encode(b, off, 3, tempBuffer, 0); trans.Write(tempBuffer, 0, 4); off += 3; len -= 3; } if (len > 0) { // Encode remainder TBase64Utils.encode(b, off, len, tempBuffer, 0); trans.Write(tempBuffer, 0, len + 1); } trans.Write(QUOTE); }