Convert to JSON from protobuf scheme and protobuf binary without generating the models?

[Nghia Tran]

Hi,

From what I understanding, given a Protobuf Scheme and the Protobuf Binary file, we can convert the binary to JSON by following:

1. Generate the models from the scheme by 

protoc --swift_out=. BookInfo_scheme.proto

2. Init models from the binary file

let decodedInfo = try BookInfo(serializedData: binaryData)) // swift

3. Serialize to JSON 

let jsonData: Data = try info.jsonUTF8Data() //swift

4. Convert Data to JSON String

Question: How can I achieve it without generating those Models? 

I did a research that Charles Proxy could do it by given protobuf binary and protobuf descriptor. Thus the solution is possible, but I couldn't find any documentation on how to implement it in C++ or Java or Swift.

Thanks in advance.

[Nghia Tran]

Btw, I found the answer. We can use Reflection C++ to do it. Thanks all