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Auto Select CF Language

Auto selects the language based on file extension, when you upload a file

  1. // ==UserScript==
  2. // @name         Auto Select CF Language
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.2.0
  5. // @description  Auto selects the language based on file extension, when you upload a file
  6. // @author       Mushfiqur Rahman Talha
  7. // @match        *codeforces.com/contest/*/problem/*
  8. // @match        *codeforces.com/problemset/problem/*
  9. // @match        *mirror.codeforces.com/contest/*/problem/*
  10. // @match        *mirror.codeforces.com/problemset/problem/*
  11. // @icon         https://www.google.com/s2/favicons?sz=64&domain=codeforces.com
  12. // @grant        none
  13. // @license      Apache-2.0
  14. // ==/UserScript==
  15.  
  16. (function() {
  17.     'use strict';
  18.  
  19.     /*
  20.     Language Support:
  21.      - GNU GCC C11 5.1.0
  22.      - GNU G++23 14.2 (64 bit, msys2)
  23.      - C# 10, .NET SDK 6.0
  24.      - D DMD32 v2.105.0
  25.      - Go 1.22.2
  26.      - Java 21 64bit
  27.      - Kotlin 1.9.21
  28.      - OCaml 4.02.1
  29.      - PHP 8.1.7
  30.      - PyPy 3.10 (7.3.15, 64bit)
  31.      - Ruby 3.2.2
  32.      - Rust 1.75.0 (2021)
  33.      - Node.js 15.8.0 (64bit)
  34.     */
  35.     const fileInput = document.querySelector("input[name=sourceFile]");
  36.     fileInput.addEventListener("change", event => {
  37.         const file = event.target.files[0];
  38.         if (!file) return;
  39.         const ext = file.name.split('.').pop();
  40.         let optionValue = null;
  41.         switch (ext) {
  42.             case "cpp":
  43.                 optionValue = "91";
  44.                 break;
  45.             case "c":
  46.                 optionValue = "43";
  47.                 break;
  48.             case "java":
  49.                 optionValue = "87";
  50.                 break;
  51.             case "py":
  52.                 optionValue = "70";
  53.                 break;
  54.             case "cs":
  55.                 optionValue = "79";
  56.                 break;
  57.             case "js":
  58.                 optionValue = "55";
  59.                 break;
  60.             case "d":
  61.                 optionValue = "28";
  62.                 break;
  63.             case "go":
  64.                 optionValue = "32";
  65.                 break;
  66.             case "kt":
  67.                 optionValue = "88";
  68.                 break;
  69.             case "ml":
  70.                 optionValue = "19";
  71.                 break;
  72.             case "php":
  73.                 optionValue = "6";
  74.                 break;
  75.             case "rb":
  76.                 optionValue = "67";
  77.                 break;
  78.             case "rs":
  79.                 optionValue = "75";
  80.                 break;
  81.  
  82.             default:
  83.                 break;
  84.         }
  85.  
  86.         if (!optionValue) return;
  87.         document.querySelectorAll("option").forEach(element => element.removeAttribute("selected"));
  88.         document.querySelector(`option[value='${optionValue}']`).setAttribute("selected", "selected");
  89.     });
  90. })();