id: "befunge"
aliases:
  - "be"
name: "Befunge"

info:
  impl: "amicloud Befunge-93"
  version: "Befunge-93"
  year: 1993
  desc: "Two-dimensional esoteric programming language invented in 1993 by Chris Pressey with the goal of being as difficult to compile as possible"
  ext:
    - be
    - bf
    - b93
    - b98
    - befunge
  web:
    wiki: "https://en.wikipedia.org/wiki/Befunge"
    esolang: "https://esolangs.org/wiki/Befunge"
    home: "https://catseye.tc/article/Languages.md#befunge-93"
    source: "https://github.com/amicloud/befunge93"
  category: esoteric
  mode: interpreted
  platform: []
  syntax:
    - golf
    - 2d
  typing: integer
  paradigm: stack
  usage: []

install:
  npm:
    - befunge93
    - prompt-sync
  scripts:
    befunge: |
      #!/usr/bin/env -S NODE_PATH=/opt/befunge93/lib/node_modules:/opt/prompt-sync/lib/node_modules node
      const fs = require("fs");

      const Befunge = require("befunge93");
      const prompt = require("prompt-sync")();

      const befunge = new Befunge();
      befunge.onInput = prompt;
      befunge.onOutput = (output) => {
        if (typeof output === "string") {
          process.stdout.write(output);
        } else {
          process.stdout.write(output + " ");
        }
      };

      const args = process.argv.slice(2);
      if (args.length !== 1) {
        console.error("usage: befunge FILE");
        process.exit(1);
      }

      befunge.run(fs.readFileSync(args[0], { encoding: "utf-8" })).catch((err) => {
        console.error(err);
        process.exit(1);
      });

main: "main.be"
template: |
  64+"!dlrow ,olleH">:#,_@

run: |
  befunge main.be