You can run Python code now

backend/src/api.ts

@@ -1,10 +1,14 @@
+import * as fs from "fs";
 import * as pty from "node-pty";
 import { IPty } from "node-pty";
+import * as path from "path";
+import * as tmp from "tmp";
 import * as WebSocket from "ws";
 
 import { LangConfig, langs } from "./langs";
 
 export class Session {
+  code: string;
   config: LangConfig;
   term: IPty;
   ws: WebSocket;
@@ -13,13 +17,14 @@ export class Session {
     this.ws = ws;
     this.config = langs[lang];
     this.term = null;
+    this.code = "";
     this.ws.send(
       JSON.stringify({
         event: "setMonacoLanguage",
         monacoLanguage: this.config.monacoLang,
       })
     );
-    this.run();
+    this.run().catch(console.error);
     ws.on("message", this.handleClientMessage);
   }
   handleClientMessage = (event: string) => {
@@ -30,7 +35,7 @@ export class Session {
       console.error(`failed to parse client message: ${msg}`);
       return;
     }
-    switch (msg.event) {
+    switch (msg?.event) {
       case "terminalInput":
         if (!this.term) {
           console.error(`terminalInput: no terminal`);
@@ -40,19 +45,52 @@ export class Session {
           this.term.write(msg.input);
         }
         break;
+      case "runCode":
+        if (typeof msg.code !== "string") {
+          console.error(`runCode: missing or malformed code field`);
+        } else {
+          this.code = msg.code;
+          this.run();
+        }
+        break;
       default:
         console.error(`unknown client message type: ${msg.event}`);
         break;
     }
   };
-  run = () => {
+  run = async () => {
-    const cmdline = this.config.cmdline;
+    const { repl, file, run } = this.config;
     if (this.term) {
       this.term.kill();
     }
+    this.ws.send(JSON.stringify({ event: "terminalClear" }));
+    const tmpdir: string = await new Promise((resolve, reject) =>
+      tmp.dir({ unsafeCleanup: true }, (err, path) => {
+        if (err) {
+          reject(err);
+        } else {
+          resolve(path);
+        }
+      })
+    );
+    let cmdline: string[];
+    if (this.code || !repl) {
+      await new Promise((resolve, reject) =>
+        fs.writeFile(path.resolve(tmpdir, file), this.code, (err) => {
+          if (err) {
+            reject(err);
+          } else {
+            resolve();
+          }
+        })
+      );
+      cmdline = run;
+    } else {
+      cmdline = repl;
+    }
     this.term = pty.spawn(cmdline[0], cmdline.slice(1), {
       name: "xterm-color",
-      cwd: process.env.PWD,
+      cwd: tmpdir,
       env: process.env,
     });
     this.term.on("data", (data) =>

backend/src/langs.ts

@@ -1,92 +1,91 @@
 export interface LangConfig {
-  cmdline: string[];
+  repl?: string[];
+  file?: string;
+  run?: string[];
   monacoLang: string;
   name: string;
 }
 
 export const langs = {
   bash: {
-    cmdline: ["bash"],
+    repl: ["bash"],
     name: "Bash",
     monacoLang: "shell",
   },
   c: {
-    cmdline: ["echo", "not implemented"],
     name: "C",
     monacoLang: "c",
   },
   "c++": {
-    cmdline: ["echo", "not implemented"],
     name: "C++",
     monacoLang: "cpp",
   },
   clojure: {
-    cmdline: ["clojure"],
+    repl: ["clojure"],
     name: "Clojure",
     monacoLang: "clojure",
   },
   emacs: {
-    cmdline: ["emacs"],
+    repl: ["emacs"],
     name: "Emacs Lisp",
     monacoLang: "plaintext",
   },
   fish: {
-    cmdline: ["env", "SHELL=/usr/bin/fish", "fish"],
+    repl: ["env", "SHELL=/usr/bin/fish", "fish"],
     name: "Fish",
     monacoLang: "plaintext",
   },
   go: {
-    cmdline: ["echo", "not implemented"],
     name: "Go",
     monacoLang: "go",
   },
   haskell: {
-    cmdline: ["ghci"],
+    repl: ["ghci"],
     name: "Haskell",
     monacoLang: "plaintext",
   },
   java: {
-    cmdline: ["echo", "not implemented"],
     name: "Java",
     monacoLang: "java",
   },
   julia: {
-    cmdline: ["julia"],
+    repl: ["julia"],
     name: "Julia",
     monacoLang: "plaintext",
   },
   lua: {
-    cmdline: ["lua"],
+    repl: ["lua"],
     name: "Lua",
     monacoLang: "lua",
   },
   nodejs: {
-    cmdline: ["node"],
+    repl: ["node"],
     name: "Node.js",
     monacoLang: "javascript",
   },
   python: {
-    cmdline: ["python3"],
+    repl: ["python3", "-u"],
+    file: "main.py",
+    run: ["python3", "-u", "-i", "main.py"],
     name: "Python",
     monacoLang: "python",
   },
   ruby: {
-    cmdline: ["irb"],
+    repl: ["irb"],
     name: "Ruby",
     monacoLang: "ruby",
   },
   rust: {
-    cmdline: ["echo", "not implemented"],
     name: "Rust",
     monacoLang: "rust",
   },
   vim: {
-    cmdline: ["vim"],
+    repl: ["vim"],
     name: "Vimscript",
     monacoLang: "plaintext",
   },
   zsh: {
-    cmdline: ["env", "SHELL=/usr/bin/zsh", "zsh"],
+    repl: ["env", "SHELL=/usr/bin/zsh", "zsh"],
     name: "Zsh",
     monacoLang: "shell",
   },

frontend/src/app.ts

@@ -32,6 +32,9 @@ socket.addEventListener("message", (event) => {
     return;
   }
   switch (message?.event) {
+    case "terminalClear":
+      term.reset();
+      return;
     case "terminalOutput":
       if (typeof message.output !== "string") {
         console.error("Unexpected message from server:", message);

package.json

@@ -7,6 +7,7 @@
     "@types/app-root-path": "^1.2.4",
     "@types/express": "^4.17.6",
     "@types/express-ws": "^3.0.0",
+    "@types/tmp": "^0.2.0",
     "app-root-path": "^3.0.0",
     "css-loader": "^3.5.3",
     "express": "^4.17.1",
@@ -16,8 +17,8 @@
     "monaco-editor": "^0.20.0",
     "node-pty": "^0.9.0",
     "style-loader": "^1.2.1",
+    "tmp": "^0.2.1",
     "ts-loader": "^7.0.5",
-    "ttf-loader": "^1.0.2",
     "typescript": "^3.9.5",
     "webpack": "^4.43.0",
     "webpack-cli": "^3.3.11",

yarn.lock

@@ -83,6 +83,11 @@
     "@types/express-serve-static-core" "*"
     "@types/mime" "*"
 
+"@types/tmp@^0.2.0":
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/@types/tmp/-/tmp-0.2.0.tgz#e3f52b4d7397eaa9193592ef3fdd44dc0af4298c"
+  integrity sha512-flgpHJjntpBAdJD43ShRosQvNC0ME97DCfGvZEDlAThQmnerRXrLbX6YgzRBQCZTthET9eAWFAMaYP0m0Y4HzQ==
+
 "@types/ws@*":
   version "7.2.5"
   resolved "https://registry.yarnpkg.com/@types/ws/-/ws-7.2.5.tgz#513f28b04a1ea1aa9dc2cad3f26e8e37c88aae49"
@@ -316,13 +321,6 @@ aproba@^1.1.1:
   resolved "https://registry.yarnpkg.com/aproba/-/aproba-1.2.0.tgz#6802e6264efd18c790a1b0d517f0f2627bf2c94a"
   integrity sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==
 
-argparse@^1.0.6:
-  version "1.0.10"
-  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
-  integrity sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==
-  dependencies:
-    sprintf-js "~1.0.2"
-
 arr-diff@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-4.0.0.tgz#d6461074febfec71e7e15235761a329a5dc7c520"
@@ -385,14 +383,6 @@ atob@^2.1.2:
   resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
   integrity sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==
 
-babel-runtime@^6.26.0:
-  version "6.26.0"
-  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.26.0.tgz#965c7058668e82b55d7bfe04ff2337bc8b5647fe"
-  integrity sha1-llxwWGaOgrVde/4E/yM3vItWR/4=
-  dependencies:
-    core-js "^2.4.0"
-    regenerator-runtime "^0.11.0"
-
 balanced-match@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
@@ -817,11 +807,6 @@ copy-descriptor@^0.1.0:
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
   integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=
 
-core-js@^2.4.0:
-  version "2.6.11"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.11.tgz#38831469f9922bded8ee21c9dc46985e0399308c"
-  integrity sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg==
-
 core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
@@ -1751,11 +1736,6 @@ is-glob@^4.0.0, is-glob@^4.0.1, is-glob@~4.0.1:
   dependencies:
     is-extglob "^2.1.1"
 
-is-in-browser@^1.1.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/is-in-browser/-/is-in-browser-1.1.3.tgz#56ff4db683a078c6082eb95dad7dc62e1d04f835"
-  integrity sha1-Vv9NtoOgeMYILrldrX3GLh0E+DU=
-
 is-number@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/is-number/-/is-number-3.0.0.tgz#24fd6201a4782cf50561c810276afc7d12d71195"
@@ -1812,11 +1792,6 @@ isobject@^3.0.0, isobject@^3.0.1:
   resolved "https://registry.yarnpkg.com/isobject/-/isobject-3.0.1.tgz#4e431e92b11a9731636aa1f9c8d1ccbcfdab78df"
   integrity sha1-TkMekrEalzFjaqH5yNHMvP2reN8=
 
-"js-tokens@^3.0.0 || ^4.0.0":
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
-  integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
-
 json-parse-better-errors@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz#bb867cfb3450e69107c131d1c514bab3dc8bcaa9"
@@ -1841,15 +1816,6 @@ json5@^2.1.2:
   dependencies:
     minimist "^1.2.5"
 
-jss@^9.5.1:
-  version "9.8.7"
-  resolved "https://registry.yarnpkg.com/jss/-/jss-9.8.7.tgz#ed9763fc0f2f0260fc8260dac657af61e622ce05"
-  integrity sha512-awj3XRZYxbrmmrx9LUSj5pXSUfm12m8xzi/VKeqI1ZwWBtQ0kVPTs3vYs32t4rFw83CgFDukA8wKzOE9sMQnoQ==
-  dependencies:
-    is-in-browser "^1.1.3"
-    symbol-observable "^1.1.0"
-    warning "^3.0.0"
-
 kind-of@^3.0.2, kind-of@^3.0.3, kind-of@^3.2.0:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-3.2.2.tgz#31ea21a734bab9bbb0f32466d893aea51e4a3c64"
@@ -1921,13 +1887,6 @@ locate-path@^3.0.0:
     p-locate "^3.0.0"
     path-exists "^3.0.0"
 
-loose-envify@^1.0.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
-  integrity sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==
-  dependencies:
-    js-tokens "^3.0.0 || ^4.0.0"
-
 lru-cache@^5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-5.1.1.tgz#1da27e6710271947695daf6848e847f01d84b920"
@@ -2011,11 +1970,6 @@ methods@~1.1.2:
   resolved "https://registry.yarnpkg.com/methods/-/methods-1.1.2.tgz#5529a4d67654134edcc5266656835b0f851afcee"
   integrity sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4=
 
-microbuffer@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/microbuffer/-/microbuffer-1.0.0.tgz#8b3832ed40c87d51f47bb234913a698a756d19d2"
-  integrity sha1-izgy7UDIfVH0e7I0kTppinVtGdI=
-
 micromatch@^3.0.4, micromatch@^3.1.10, micromatch@^3.1.4:
   version "3.1.10"
   resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-3.1.10.tgz#70859bc95c9840952f359a068a3fc49f9ecfac23"
@@ -2335,7 +2289,7 @@ p-try@^2.0.0:
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
   integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
 
-pako@^1.0.0, pako@~1.0.5:
+pako@~1.0.5:
   version "1.0.11"
   resolved "https://registry.yarnpkg.com/pako/-/pako-1.0.11.tgz#6c9599d340d54dfd3946380252a35705a6b992bf"
   integrity sha512-4hLB8Py4zZce5s4yd9XzopqwVv/yGNhV1Bl8NTmCq1763HeK2+EwVTv+leGeL13Dnh2wfbqowVPXCIO0z4taYw==
@@ -2658,11 +2612,6 @@ readdirp@~3.4.0:
   dependencies:
     picomatch "^2.2.1"
 
-regenerator-runtime@^0.11.0:
-  version "0.11.1"
-  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz#be05ad7f9bf7d22e056f9726cee5017fbf19e2e9"
-  integrity sha512-MguG95oij0fC3QV3URf4V2SDYGJhJnJGqvIIgdECeODCT98wSWDAJ94SSuVpYQUoTcGUIL6L4yNB7j1DFFHSBg==
-
 regex-not@^1.0.0, regex-not@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/regex-not/-/regex-not-1.0.2.tgz#1f4ece27e00b0b65e0247a6810e6a85d83a5752c"
@@ -2733,6 +2682,13 @@ rimraf@^2.5.4, rimraf@^2.6.3:
   dependencies:
     glob "^7.1.3"
 
+rimraf@^3.0.0:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-3.0.2.tgz#f1a5402ba6220ad52cc1282bac1ae3aa49fd061a"
+  integrity sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==
+  dependencies:
+    glob "^7.1.3"
+
 ripemd160@^2.0.0, ripemd160@^2.0.1:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/ripemd160/-/ripemd160-2.0.2.tgz#a1c1a6f624751577ba5d07914cbc92850585890c"
@@ -2960,11 +2916,6 @@ split-string@^3.0.1, split-string@^3.0.2:
   dependencies:
     extend-shallow "^3.0.0"
 
-sprintf-js@~1.0.2:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
-  integrity sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=
-
 ssri@^6.0.1:
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/ssri/-/ssri-6.0.1.tgz#2a3c41b28dd45b62b63676ecb74001265ae9edd8"
@@ -3074,11 +3025,6 @@ supports-color@^5.3.0:
   dependencies:
     has-flag "^3.0.0"
 
-symbol-observable@^1.1.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.2.0.tgz#c22688aed4eab3cdc2dfeacbb561660560a00804"
-  integrity sha512-e900nM8RRtGhlV36KGEU9k65K3mPb1WV70OdjfxlG2EAuM1noi/E/BaW/uMhL7bPEssK8QV57vN3esixjUvcXQ==
-
 tapable@^1.0.0, tapable@^1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/tapable/-/tapable-1.1.3.tgz#a1fccc06b58db61fd7a45da2da44f5f3a3e67ba2"
@@ -3123,6 +3069,13 @@ timers-browserify@^2.0.4:
   dependencies:
     setimmediate "^1.0.4"
 
+tmp@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.2.1.tgz#8457fc3037dcf4719c251367a1af6500ee1ccf14"
+  integrity sha512-76SUhtfqR2Ijn+xllcI5P1oyannHNHByD80W1q447gU3mp9G9PSpGdWmjUOHRDPiHYacIk66W7ubDTuPF3BEtQ==
+  dependencies:
+    rimraf "^3.0.0"
+
 to-arraybuffer@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/to-arraybuffer/-/to-arraybuffer-1.0.1.tgz#7d229b1fcc637e466ca081180836a7aabff83f43"
@@ -3181,25 +3134,6 @@ tslib@^1.9.0:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.13.0.tgz#c881e13cc7015894ed914862d276436fa9a47043"
   integrity sha512-i/6DQjL8Xf3be4K/E6Wgpekn5Qasl1usyw++dAA35Ue5orEn65VIxOA+YvNNl9HV3qv70T7CNwjODHZrLwvd1Q==
 
-ttf-loader@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/ttf-loader/-/ttf-loader-1.0.2.tgz#ac1d5824ac9ff2fe3daaa9836170072e1fb6f6f2"
-  integrity sha512-IMlcqjkSxqfOD4UpPrJ+LGm98JQ5URDFami19mR7lfjNR1XAEoG93Xd3loGYUMSxuhfzSTxsnLXu8emIawx/6A==
-  dependencies:
-    babel-runtime "^6.26.0"
-    jss "^9.5.1"
-    ttf2woff "^2.0.1"
-    uuid "^3.2.1"
-
-ttf2woff@^2.0.1:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/ttf2woff/-/ttf2woff-2.0.2.tgz#09a7cee59abd3c15282b57ed84ac7c7770749f1f"
-  integrity sha512-X68badwBjAy/+itU49scLjXUL094up+rHuYk+YAOTTBYSUMOmLZ7VyhZJuqQESj1gnyLAC2/5V8Euv+mExmyPA==
-  dependencies:
-    argparse "^1.0.6"
-    microbuffer "^1.0.0"
-    pako "^1.0.0"
-
 tty-browserify@0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/tty-browserify/-/tty-browserify-0.0.0.tgz#a157ba402da24e9bf957f9aa69d524eed42901a6"
@@ -3319,11 +3253,6 @@ utils-merge@1.0.1:
   resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.1.tgz#9f95710f50a267947b2ccc124741c1028427e713"
   integrity sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=
 
-uuid@^3.2.1:
-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
-  integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
-
 v8-compile-cache@2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/v8-compile-cache/-/v8-compile-cache-2.0.3.tgz#00f7494d2ae2b688cfe2899df6ed2c54bef91dbe"
@@ -3339,13 +3268,6 @@ vm-browserify@^1.0.1:
   resolved "https://registry.yarnpkg.com/vm-browserify/-/vm-browserify-1.1.2.tgz#78641c488b8e6ca91a75f511e7a3b32a86e5dda0"
   integrity sha512-2ham8XPWTONajOR0ohOKOHXkm3+gaBmGut3SRuu75xLd/RRaY6vqgh8NBYYk7+RW3u5AtzPQZG8F10LHkl0lAQ==
 
-warning@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/warning/-/warning-3.0.0.tgz#32e5377cb572de4ab04753bdf8821c01ed605b7c"
-  integrity sha1-MuU3fLVy3kqwR1O9+IIcAe1gW3w=
-  dependencies:
-    loose-envify "^1.0.0"
-
 watchpack-chokidar2@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/watchpack-chokidar2/-/watchpack-chokidar2-2.0.0.tgz#9948a1866cbbd6cb824dea13a7ed691f6c8ddff0"