This project is inspired by deno-bridge. Deno-bridge provides a great idea to create a WebSocket connection between emacs and deno, making emacs communicate with deno.
But when I write emacs plugins, I need a python package to provide some ability. So I try to transplant deno-bridge to python.
When I try to implement python-bridge, I think I could make it more general as websocket-bridge.
Emacs uses emacs-websocket to create a WebSocket server; other language extensions make WebSocket clients connect to the emacs server. So emacs can communicate with other languages’ programs.
git clone --depth=1 -b main https://github.com/ginqi7/websocket-bridge ~/.emacs.d/site-lisp/websocket-bridge/
From here on, you can add the full path to the websocket-bridge installation directory to your Emacs load-path, then add the following to init.el:
(add-to-list 'load-path "~/.emacs.d/site-lisp/websocket-bridge/")
(require 'websocket-bridge)
I write a demo to show you how simple write app base on websocket-brige:
(require 'websocket-bridge)
(setq websocket-bridge-demo-py-path (concat (file-name-directory load-file-name) "websocket-bridge-demo.py"))
(websocket-bridge-start "demo" "python" websocket-bridge-demo-py-path)
(websocket-bridge-call "demo" "ping" "Hello from Emacs.")
Start client process: (websocket-bridge-app-start "demo" "python" deno-bridge-demo-py-path)
Call TypeScript function from Emacs: (websocket-bridge-call "demo" "ping" "Hello from Emacs.")
Clean Deno process: execute command websocket-bridge-app-exit
and select application name
import websocket_bridge_python
async def on_message(message):
info = json.loads(message)
[func_name, func_args] = info[1]
if (func_name == "ping"):
print("Emacs message: ", func_args)
emacsVar = await bridge.get_emacs_var("websocket-bridge-app-list")
print("Emacs var 'websocket-bridge-app-list': ", emacs_var)
bridge.message_to_emacs("Hi from Python")
bridge.eval_in_emacs('(message \"Eval from Python\")')
bridge = websocket_bridge_python.bridge_app_regist(on_message) # regist message handle function
asyncio.run(bridge.start()))
import { bridgeAppRegist } from "https://deno.land/x/websocket_bridge@0.0.1/mod.ts";
const bridge = bridgeAppRegist(onMessage)
async function onMessage(message) {
console.log(message)
const [funcName, funcArgs] = JSON.parse(message)[1]
if (funcName == "ping") {
console.log("Emacs message: ", funcArgs)
const emacsVar = await bridge.getEmacsVar("deno-bridge-app-list")
console.log("Emacs var 'deno-bridge-app-list': ", emacsVar)
bridge.messageToEmacs("Hi from TypeScript")
bridge.evalInEmacs('(message \"Eval from TypeScript\")')
}
}