bfgenerator

src/inc/trigger/lib/brainfuck.js

@@ -1,80 +1,13 @@
-function gcd(a, b) {
-  if (b === 0)
-    return a;
-  else
-    return gcd(b, a % b);
+function bfgen(text) {
+  let out = "+".repeat(10) + "[";
+  let repeat = 0;
+  for (let i = 0; i < text.length; i++)
+    repeat = text.charCodeAt(i) - text.charCodeAt(i) % 10;
+  out += repeat > 10 ? '>' + "+".repeat(repeat / 10) : null;
+  out += "<".repeat(out.split(">").length - 1) + "-]";
+  for (let i = 0; i < text.length; i++)
+    out += ">" + "+".repeat(text.charCodeAt(i) % 10) + ".";
+  return out;
 }
 
-function inverse_mod(n, m) {
-  var inv1 = 1,
-    inv2 = 0,
-    tmp;
-  while (m) {
-    tmp = inv1;
-    inv1 = inv2;
-    inv2 = tmp - inv2 * (n / m | 0);
-    tmp = n;
-    n = m;
-    m = tmp % m;
-  }
-  return inv1;
-}
-
-function shortest_str(arr) {
-  var min = 0;
-  for (var i = 1; i < arr.length; i++)
-    if (arr[i].length < arr[min].length)
-      min = i;
-  return min;
-}
-
-var map = [],
-  plus_map = [""],
-  minus_map = [""],
-  iter = true,
-  repeat = 2,
-  start;
-
-for (var i = 1; i < 256; i++) {
-  plus_map[i] = plus_map[i - 1] + "+";
-  minus_map[i] = minus_map[i - 1] + "-";
-}
-
-for (var x = 0; x < 256; x++) {
-  map[x] = [];
-  for (var y = 0; y < 256; y++) {
-    var delta = y - x;
-    if (delta > 128)
-      delta -= 256;
-    if (delta < -128)
-      delta += 256;
-    if (delta >= 0)
-      map[x][y] = plus_map[delta];
-    else
-      map[x][y] = minus_map[-delta];
-  }
-}
-
-function generate(str) {
-  var last = 0,
-    len = str.length,
-    char_map,
-    result = "",
-    memory = [0],
-    index = 0;
-  for (var i = 0; i < len; i++) {
-    var
-      chr = str.charCodeAt(i) & 255,
-      options = [
-        ">" + map[0][chr],
-        map[last][chr],
-      ],
-      shortest;
-    shortest = shortest_str(options);
-    result += options[shortest] + ".";
-    last = chr;
-  }
-  return result;
-}
-
-export default { generate };
+export default { bfgen };

src/inc/trigger/sandbox.js

@@ -1,4 +1,4 @@
-import { generate as bfgen } from "./lib/brainfuck.js";
+import { bfgen } from "./lib/brainfuck.js";
 
 const vm = require("vm")
   , request = require("request");
@@ -42,7 +42,7 @@ module.exports = bot => {
       },
       hs: {
         "LanguageChoice": "11",
-        "Program": "main = " + code,
+        "Program": "{-# LANGUAGE UnicodeSyntax #-}\r\nmain = " + code,
         "Input": "",
         "CompilerArgs": "-o a.out source_file.hs"
       },
@@ -148,7 +148,8 @@ module.exports = bot => {
     clients: ["irc", "tg"],
     f: e => {
       let args = e.message.trim().substring(7);
-      e.reply(bfgen(args));
+      let output = bfgen(args);
+      e.reply(output.length > maxoutput ? `holy fuck, Ausgabe wäre viel zu lang! (${output.length} Zeichen :DDDDDD)` : output);
     }
   });
 };