initial

pages/api/spawn.js

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+import { spawn } from "child_process";
+export default function (req, res) {
+  console.log("spawnin");
+  //console.log(req.body);
+  //file
+  let textData = req.body.profil;
+  let replacedData = textData.replace("<22>", "o").replace("<22>", "e");
+  console.log(replacedData);
+
+  var fs = require("fs");
+  fs.writeFile("P.txt", replacedData, function (err) {
+    if (err) {
+      return console.error(err);
+    }
+  });
+
+  //py
+
+  const python = spawn("python3", ["a.py"]);
+
+  let dataToSend;
+  python.stdout.on("data", function (data) {
+    console.log("Pipe data from python script ...");
+    dataToSend = data.toString();
+    //console.log(dataToSend)
+  });
+python.stderr.on('data', (data) => {
+  console.error(`stderr: ${data}`);
+});
+  // in close event we are sure that stream from child process is closed
+  python.on("close", (code) => {
+    console.log(`child process close all stdio with code ${code}`);
+    // send data to browser
+    console.log(dataToSend);
+    console.log("done");
+    res.send("dataToSend");
+  });
+}