support jsonpointer format as rfc6901

[gcp85163]

Hi,
Does sonic-cpp support merge-patch easily?
For example : { op: replace, patch : "Object/0/New_object", value : "123" }

If use json_pointer:
sonic_json::Node* node2 = doc.AtPointer(PointerType({"Object", 0, "New_object"}));
This doesn't format well. transfer patch : "Object/0/New_object" to {"Object", 0, "New_object"}

[liuq19]

Are you discuss about jsonpointer rfc, for example, "/Object/0/New_object" follows jsonpointer rfc.

We will support the RFC in the future.

However, parsing “Object/0/New_object” hurts performance， and it can be easily rewritten as {"Object", 0, "New_object"}, so, we suggest using the existing format like {"Object", 0, "New_object"}.

[gcp85163]

Are you discuss about jsonpointer rfc, for example, "/Object/0/New_object" follows jsonpointer rfc.

We will support the RFC in the future.

However, parsing “Object/0/New_object” hurts performance， and it can be easily rewritten as {"Object", 0, "New_object"}, so, we suggest using the existing format like {"Object", 0, "New_object"}.

Yes, I am talking about jsonpointer rfc.

For current code, How to rewritten as {"Object", 0, "New_object"}? just split string by '/' ? But how to handle string to int automatic?
Can you give me some example?

[liuq19]

This is not just a matter of splitting strings by '/', you need to refer to the RFC to distinguish the escape characters. and you can refer to the rapidjson.