I have written a C++ class for comparing two Google Protocol Buffer
messages. It takes two GPB objects and returns whether the two GPB messages
are exactly same or not. This class also has another API which returns even
the attributes that got modified between the two messages. The C++ API
(simple case of just return true/false) looks like below. It takes Google
Protobuf base class "Message" objects as input. So this API can be called
to compare any type of protobuf messages as long as firstMsg and secondMsg
are of same type. i.e. can be used to compare message of type Student, or
message of type Teacher.
bool get_diff(google::protobuf::Message* firstMsg,
google::protobuf::Message* secondMsg)
This works fine for me to use from a C++ code. However, now I have a new
use case where I need to call this API from a C code. My C code also has
protobuf messages that are generated with protoc-c compiler. I am having
difficulty in generating google::protobuf::Message from a protobuf-c
message to call this API.
Any suggestions on how to move forward ?
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