brainfuckgenerator

src/inc/trigger/lib/brainfuck.js

@@ -0,0 +1,80 @@
+function gcd(a, b) {
+  if (b === 0)
+    return a;
+  else
+    return gcd(b, a % b);
+}
+
+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 };

src/inc/trigger/sandbox.js

@@ -1,8 +1,7 @@
+import { generate as bfgen } from "./lib/brainfuck.js";
+
 const vm = require("vm")
-  , http = require("http")
-  , https = require("https")
-  , request = require("request")
-  , querystring = require("querystring");
+  , request = require("request");
 
 const maxoutput = 400;
 
@@ -141,4 +140,15 @@ module.exports = bot => {
       });
     }
   });
+
+  bot._trigger.set("bfgen", {
+    call: /^\!bfgen .*/i,
+    level: 100,
+    active: true,
+    clients: ["irc", "tg"],
+    f: e => {
+      let args = e.message.trim().substring(7);
+      e.reply(bfgen(args));
+    }
+  });
 };