eproto is base on msgpack. support protobuf description file format (.proto). can use in Lua(C++/pure lua),javascript and C#, C++,flutter(dart).eproto是基于msgpack的序列化协议，支持使用protobuf文件格式来定义协议，目前支持的语言有Lua（C++版本高效，纯Lua版本方便），JavaScript，C#，C++，flutter(dart)。
link https://github.com/zhouxingtuan/eproto
define the proto just the same as protobuf
in the tool directory, run command to gen a pb file:
lua gen.lua xxx.proto
embedded the code into your program, now support with Lua5.1/LuaJIT only:
eproto.cpp
eproto.h
use the api follow to register a file:
eproto.register_file("xxx.pb")
user the api follow to register a buffer from pb file:
eproto.register(buffer)
encode:
eproto.encode("packageName.messageName", tab)
decode:
eproto.decode("packageName.messageName", buffer)
pack:
eproto.pack(tab)
unpack:
eproto.unpack(buf)
in the tool directory, after run command to gen a pb file, you can find the js file:
xxx.js
including the xxx.js into your codes, check the example in index.html:
<script type="text/javascript" src="eproto.js" ></script>
<script type="text/javascript" src="invitemgr_client.js" ></script>
use the api follow:
var buf = eproto.encode("packageName.messageName", tab);
var tab = eproto.decode("packageName.messageName", buf);
var buf = eproto.pack(tab);
var tab = eproto.unpack(buf);
in the tool directory, after run command to gen a pb file, you can find the cs file:
xxx.cs
Copy the Eproto.cs and these proto files to your project:
WriteBuffer wb = new WriteBuffer();
test.request req = new test.request();
wb.Clear();
req.Encode(wb);
byte[] tb = wb.CopyData();
//
ReadBuffer rb = new ReadBuffer(tb);
req.Decode(rb);
in the tool directory, after run command to gen a pb file, you can find the hpp file:
xxx.hpp
Copy eproto.hpp and these proto files to your project, and include them:
test::request* req = test::request::New();
eproto::Writer wb;
wb.clear();
req->Encode(wb);
//
eproto::Reader rb(wb.data(), wb.size());
req->Decode(rb);
test::request::Delete(req);
You can find some simple test in main.cpp
Note: C++中的message对象采用的是裸指针，需要显式New和Delete，挂载到另一个message里面的message会被连带释放，
可以看生成源代码中的Clear函数；由于C++中对数字、字符串、map、vector等没有nil的概念，所以和Lua中的nil
会不一致，C++中会给默认值，分别是数字（0）、字符串（空""）、map（空表）、vector（长度为0空数组）。
只有message对象使用指针，NULL和nil保持了一致。这里采用了完全public的class模式（类似struct），对新手
不友好，容易造成内存泄漏，注意使用。
in the tool directory, after run command to gen a pb file, you can find the dart file:
xxx.dart
Copy eproto.dart and these proto files to your project, and import them. You can use it just like C++.