Text to Brain-Flak

Question

Your challenge is to turn input text to brain-flak code that will output the text.

Tutorial taken from here with permission here

Brain-Flak has two stacks, known as 'left' and 'right'. The active stack starts at left. If an empty stack is popped, it will return 0. That's it. No other variables. When the program starts, each command line argument is pushed on to the active stack.

The only valid characters in a Brain-Flak program are ()[]{}<>, and they must always be balanced. There are two types of functions: Nilads and Monads. A nilad is a function that takes 0 arguments. Here are all of the nilads:

• () Evaluates to one.
• [] Evaluates to the height of the current stack.
• {} Pop the active stack. Evaluates to the popped value.
• <> Toggle the active stack. Evaluates to zero.

These are concatenated together when they are evaluated. So if we had a '3' on top of the active stack, this snippet:

()(){}

would evaluate to 1 + 1 + active.pop() which would evaluate to 5.

The monads take one argument, a chunk of Brain-Flak code. Here are all of the monads:

• (n) Push 'n' on the active stack.
• [n] Evaluates to negative 'n'
• {foo} While zero is not on the top of the stack, do foo.
• <foo> Execute foo, but evaluate it as 0.

These functions will also return the value inside of them, so

(()()())

Will push 3 but

((()()()))

Will push 3 twice.

The {} will evaluate to the sum of all runs. So if we had '3' and '4' on the top of the stack:

{{}}

would evaluate as 7.

When the program is done executing, each value left on the active stack is printed, with a newline between. Values on the other stack are ignored.

Rules

• You may assume that the Brain-Flak is being run with ascii out. (-A)
• The brain-flak code must NOT require input
• All standard rules apply
• The code must run within 1 minute for any input up to 1024 bytes on TIO. (If no TIO output is available supply an interpreter and I will run it on my machine (my machine should be able to come close to TIO)).
• You must support arbitrary length input.
• You may take input from a file.
• Optimization for test cases is not allowed
• Deterministic output is required
• Programs don't need to be stack clean

Test cases (try your code on these, actual scoring texts will be released in 1-2 weeks after challenge is posted)

ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz

The meaning of brain-flak is to flak your brain with pain.

`1234567890-=qwertyuiop[]\asdfghjkl;'zxcvbnm,./~!@#$%^&*()_+QWERTYUIOP{}|ASDFGHJKL:"ZXCVBNM<>?

To be, or not to be, that is the question:
Whether 'tis nobler in the mind to suffer
The slings and arrows of outrageous fortune,
Or to take arms against a sea of troubles
And by opposing end them. To die-to sleep,
No more; and by a sleep to say we die

<your brain-flak code here>

The fitness pacer test is a multi stage test. Avacado Avacado Avacadad Avacadad carrot.bat carrot.jar carrot.carrot Quack Quack Quack Quack Quack Quack Quack Quack Quack downgoat doawngoat down down gaot



This challenge came from a online program that turned text into brain-fuck. However brain-fuck has limitations and it is not nearly as cool as brain-flak. I really am looking forward to cool programs :) I am glad you took the time to read this and look forward to seeing your answer.

Winning

To win you must give the total length of the brain-flak code given by each of the test cases which will be released 1-2 weeks after the post date. The shortest total length wins.

NOTE!!!!!!:

This is not code-golf, length of your code will not effect your final score in any way. Making clean readable code is appreciated. Thanks!

Test cases

here

Answer 1

Brain-Flak, 130 bytes

{({}<>)<>}<>{((((()()()()()){}){}){}<>)<>{(((((()()()()()){}){}){}<>)())<>({}[()])}<>((((()()()()()){}){}){}())<>{}}<>{({}<>)<>}<>

Try it online!

Output for <your brain-flak code here>: 5045 bytes

(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()())(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()(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Try it online!

Answer 2

Python 3, 17744 bytes

Edit: I've added a couple of options to help golf in stack safe situations.

import sys
sys.setrecursionlimit(1000000)
import time

def copy(n, code):
	if n == 1: return code
	for x in range(2, n):
		if n%x == 0: return '('*(x-1) + copy(n//x, code) + ')'*(x-1) + '{}'*(x-1)
	return '('*(n-1) + code + ')'*(n-1) + '{}'*(n-1)

letterCache = {}
def letterGen(n, stackLen, prev=0, enclosed=0):
	if (n, stackLen, prev, enclosed) in letterCache: return letterCache[(n, stackLen, prev, enclosed)]
	if n == 0: return ''
	if n == 1: return '()'
	if n == stackLen: return '[]'
	f = []
	if n < 0:
		f.append('[%s]'%letterGen(-n, stackLen, prev, enclosed))
	else:
		if prev != 0:
			diff = n-prev
			#Saves ~200 bytes but 20x longer
			#for x in range(min(diff, 0)-stackLen, max(diff, 0)+stackLen+1):
				#f.append(letterGen(x, stackLen - enclosed) + 's' + letterGen(diff - x, stackLen))

			f.append('s' + letterGen(diff, stackLen))
			f.append(letterGen(diff, stackLen - enclosed) + 's')
		x = 2
		while x*x < n:
			f.append(copy(x, letterGen(n//x, stackLen, prev, enclosed)) + letterGen(n%x, stackLen, prev, enclosed))
			x += 1
		f.append(letterGen(n-1, stackLen, prev, enclosed)+'()')
		if abs(n-stackLen) < n and stackLen > 1: f.append(letterGen(n-stackLen, stackLen, prev, enclosed) + '[]')
	letterCache[(n, stackLen, prev, enclosed)] = min(f, key=len)
	return letterCache[(n, stackLen, prev, enclosed)]

def s2BrainFlak(c, checkReverse = True):
	g = []
	c = c[::-1]
	stack = []
	out = []
	enclosed = 0

	if checkReverse:
		g.append(''.join(out) + s2BrainFlak(c, False) + '{({}<>)<>}<>')
		#for x in range(1,11): g.append(s2BrainFlak(list(c)+[chr(0)]*x, False) + '{({}<>)<>}<>')
	#if c and c[0] == chr(0):
	#	out.append('<>')
	#	while c[0] == chr(0):
	#		stack.append(0)
	#		out[0] = '(' + out[0] + ')'
	#		c = c[1:]


	for letter in range(len(c)):
		char = ord(c[letter])
		x = '(%s)'%letterGen(char, len(stack), stack[-1] if stack else 0, enclosed)

		if 's' in x:
			out[-1] = x.replace('s', out[-1])
			enclosed += 1
		else:
			out.append(x)
			enclosed = 1
		if checkReverse and c[letter+1:]:
			g.append(''.join(out) + '<>' + s2BrainFlak(c[letter+1:], False) + '{({}<>)<>}<>')
			m = min(list(map(ord, c[letter+1:])))-1
			#for i in range(1,m): g.append(''.join(out) + '<>' + s2BrainFlak(list(map(lambda x: chr(ord(x)-i), c[letter+1:])), False) + "{({}%s<>)<>}<>"%letterGen(i, 0))
			g.append(''.join(out) + '<>' + s2BrainFlak(list(map(lambda x: chr(ord(x)-m), c[letter+1:])), False) + "{({}%s<>)<>}<>"%letterGen(m, 0))
			#for x in range(1,11): g.append(''.join(out) + s2BrainFlak(list(c)+[chr(0)]*x, False) + '{({}<>)<>}<>')
		stack.append(char)
	g.append(''.join(out))
	return min(g, key=len)

Try it online!

A simple recursive solution which I will continue to improve further. This does very well with smaller inputs, but loses out to MegaTom's Ruby answer for longer inputs.

Notes:

• This needs a clean stack to operate, otherwise the improvements with [] become useless (though they can be disabled by commenting out a couple of lines, and they only improve it by about 100 bytes quite a bit).
• Since this is a recursive algorithm, it will take longer for chars with large values. For example, the character ÿ (value 255) takes 9 seconds to evaluate, where every test case at once takes 1.6 seconds. Cache implemented!
• Idea of checking the reverse shamelessly borrowed from HyperNeutrino's answer, saving 800 bytes from the total.
• I changed the total from all test cases at once to the total of each test case. This saves some bytes by adding more uses for the stack length operator ([])
• ~200 bytes from choosing the minimum of prepending the difference between characters, or appending them (again, this saves bytes through the stack length operator)
• Implemented a cache (which caches values based on stack length), which allowed me to check more possible avenues without going over the time limit. This saved 1500 bytes from the total.
  • Also, I switched the em dash in the Shakespeare test case to a normal -. This cut out a few bytes, and a lot of time given the value of that em dash was 8212 :o .
• Cut out 1200 bytes from the longer test cases by cutting them into slices and checking whether it was shorter to switch to the other stack, construct it in reverse, and push it back to the first stack again. Next up, even more slicing, and saving time by optimising the minimum slicing range.
• Combined the number generating function with the checking for efficiencies with the previous character part into one recursive function. There's a couple of sections in here that save some bytes, but extend the runtime of the program a bit beyond the the one minute limit.
  • Uncommenting those parts can cut it down to 11394 bytes... but takes about 16 minutes.

Example outputs:

<your brain-flak code here> (312 bytes):

(()(((((((((()()()){}()){}()){}){})){}())[(()[][]){}])[][])[[]])([]((((([]((()[][][]){})[][]){})(()[]){})[()[][]])[()][]))([()][]([[]]((((([][]){}())){}[])(()()()){})))([()()()][]((((((()()[[][]]([()()()()][]((([][])[]){}()))[])())[((()()[])){}{}])[()()][]){})[()()()]))(([][]){}())((()()()()()[]){}){({}<>)<>}<>

Try it online!

Hello, World! (142 bytes [Note: The current previous best was 148 bytes, and is now 136 bytes]):

((()(((((((((()()()()){}){}){}()))){}{}())([][]){})[][])[[]])[((()[]){}){}])([()[]](((()(()[]([][]((()[][]){}[]))){}[])[()()()])))(([][][]){})

Try it online!

Answer 3

Ruby, 17398 bytes for all (new) test cases

# cache for holding shortest push results
$p_cache = {} 

# Get code to push a number "a" to the stack,
#  given top of stack "b" and stack height "h"
def push a,b=nil,h=0
  return $p_cache[[a,b,h]] if $p_cache[[a,b,h]]
  arr = []
  if b
    arr.push "(({})#{add(a-b,h)})"
  end
  arr.push "(#{add a,h}  )"
  arr.push "([]#{add a-h,h}  )"
  i=2
  while i*i<=a && i<4
    arr.push "#{'('*(i-1)}#{push a/i,b,h}#{')'*(i-2)+'{}'*(i-1)}#{add(a%i,h)})"
    i+=1
  end
  $p_cache[[a,b,h]] = arr.min_by(&:length)
end


$cache = {}

# Get code to add a number "n" to the 3rd stack
#  given stack height "h" 

def add n,h=0
  return $cache[[n,h]] if $cache[[n,h]]
  arr = []
  if n > 0
    arr.push("()"*n)
  elsif n == 0
    return ""
  else
    if h > 0
      1.upto(-n/h){|i|
        arr.push "[#{'[]'*i}]#{add(h*i+n,h)}"
      }
    end
    arr.push "[#{add(-n,h)}]"
    return ($cache[[n,h]] = arr.min_by &:length)
  end
  
  if h > 0
    if n > h
      arr.push "[]#{add n-h,h}"
    else
      arr.push "[]#{add n-h}"
    end
  end
  
  i=2
  while i*i<=n && i<4
    arr.push "#{'('*(i-1)}#{add n/i,h}#{')'*(i-1)+'{}'*(i-1)}#{add(n%i,h)}"
    x=n-h-i+1
    if x > 0
      arr.push "#{'('*(i-1)}#{add x/i,h}#{')'*(i-1)}[]#{'{}'*(i-1)}#{add(x%i)}"
    end
    i+=1
  end
  $cache[[n,h]] = arr.min_by &:length
end

def push_arr(arr)
  i=0
  code = push(arr[0]) + "\n" + 
  arr.each_cons(2).map{|r|
    i+=1;push r[1],r[0],i
  }.join(?\n)
  
  while code =~ /^\((.*)\)\n(\(*)\{\}/
    code.gsub!(/^\((.*)\)\n(\(*)\{\}/, '\2\1')
  end
  
  code.split(/\n| /).join
end

# push a string to the stack
def push_string(text)
  push_arr text.chars.map(&:ord)
end

$str_cache = {}
# Push a string in reverse order
def push_string_r(text)
  return $str_cache[text] if $str_cache[text]
  a = [push_string(text)+"{({}<>)<>}<>", push_string(text.reverse)]
  
  min = text.bytes.min-1
  a.push push_arr(text.bytes.map{|x|x-min}) + "{({}<>#{add min})<>}<>"

  # Try cutting it into bits
  3.upto([text.length/20, 10].min)do|x|
    spl = x*9
    a.push push_string_r(text[spl..-1]) + "<>" + 
      push_string(text[0...spl]) + "{({}<>)<>}<>"
    spl = x*10
    a.push push_string_r(text[spl..-1]) + "<>" + 
      push_string(text[0...spl]) + "{({}<>)<>}<>"
  end
  
  a.map!{|code|code.gsub("<><>","")}

  $str_cache[text] = a.min_by &:length
end

Try it online!

---

<your brain-flak code here>, 362 358 bytes

((((((((((()()()){}()){}()){}){})){}())[[][][][][]])[][])[()()()])((((((((([][][]()){}))){}{}()())[][]()())[[][]()])[][()])()()()()())([][][][]())(((([]([]())[]{}){})(()()()){})[[][()()()]])([]([][][]()){})((([][])[]){}())([]([][]())[]{})((([][]()())[]{})())((((((()()()()())[]{})[][()()]){})[()()()])((()()()){}){}())([][][][]())(((()())[]{}){}){({}<>)<>}<>

Try it online!

Answer 4

Python 3, 16222 bytes

cache = {}

def generate_number(num, height, level = 0, output = False): # Idea to use Stack Height inspired by Jo King
	if output: print(" " * level + str(num) + " " + str(height))
	if (num, height) in cache: return cache[(num, height)]
	if num == 0: return ""
	if num < 0: return "[" + generate_number(-num, height, level + 1, output) + "]"
	if num == height: return "[]"
	value = min((["[]" + generate_number(num - height, height, level + 1, output)] if height > num * 2 and abs(num - height) < num else []) + ["()" + generate_number(num - 1, height, level + 1, output)] + ["(%s)%s{}" % (generate_number(num // i, height, level + 1, output), "({})" * (i - 2)) for i in range(2, num) if num % i == 0], key = len)
	cache[(num, height)] = value
	return value

generate_number(256, 0, 0, False)

def generate_string(array):
	string = ""
	last = 0
	for height, num in enumerate(array):
		string = min("(" + string + generate_number(num - last, height) + ")", "<" + string + ">" + "(" + generate_number(num, height) + ")", key = len)
		last = num
	return string

a = lambda s: generate_string(list(map(ord, s)))

i = sys.stdin.read()
j = i[::-1]

print(min(a(j), a(i) + "{({}<>)<>}<>", key = len))

Try it online!

First below 1000 for <your brain-flak code here> :D

Brain-Flak, 448 bytes

<((((((<(((<((((<((((<((((((()(()(()(()()()){}){}){}){})(()((()()[]){}){})({}){})()((()[]){}){})[()(([]){}){}])()()())>((()([])({}){}){})()((()(()()[]){}){}){})[()])()()()[])[()()()[]])>(()()([])({}){})(()(()[]){})({}){})[(()()()()()){}])()(()()()()()){})[(()()()){}])>(([])({}){})()(([]){}){})[()()()()()])[(()()()()){}])>((([])({}){}){})[((()()()()){}){}])[(()[])({}){}])()(()()()()()[])({}){})()()())[(()()()){}])(()()()()()){})>((()()()()[]){})

Try it online!

(originally 827 for <your brain-flak code here>)

Answer 5

05AB1E, too many bytes (My first BF anything)

ÇεDÑDg;<èUX÷VX"()"×"(ÿ)"YX-"()"׫"(ÿ)"}»"{({}<>)({<({}[()])><>({})<>}{}<><{}><>)<>}<>"«

Try it online!

---

Extremely basic attempt at golfing using a the premade "multiplication" Brain-flak code. All this does is finds the smallest-sum divisor pair for each ASCII code point, then pushes both of those divisors pairs as numbers. The Brainflak code ({}<>)({<({}[()])><>({})<>}{}<><{}>) is then appended and executed in a loop until all values are on the alternate stack.

---

List of people I'm thanking:

• DJMcMayhem for pointing out (()())(()()()) = ((()())()) (-252 bytes)
• DJMcMayhem for showing me how loops should work (-927 bytes).

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Example golf of <your brain-flak code here> at 3470 3218 2291 bytes:

Brain-Flak, 2291 bytes

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((()())()()()()()()()()()()()()()()()()()()()()()()()()()()()()()){({}<>)({<({}[()])><>({})<>}{}<><{}><>)<>}<>

Try it online!

---

Each row represents one character being golfed, this beats the basic solution I posted by 60%, and going in knowing literally nothing about Brainflak I feel this is a good baseline of what not to do. I'll score the answer in a little while, in the middle of something else and I'm sure I can improve on this. (I'm including the newlines in the byte-count because I don't expect this to win).

Answer 6

Brain-Flak

For each character (main loop)
(([])<{({}[()]<

Get the difference between the top two characters
(({}<>)<>[({})]<><({}<>)>)

Push an open paren on the other stack
<>(((((()()){}()){}){}){})

Retrieve difference
(<>{}<>)

Greater than zero
([(({})[(())])](<>)){({}())<>}{}{((<{}>))<>{}}{}<>{}

If
{{}

While non-zero
({

Add value if not 1
<(({})[()])>{()(<{}>)}{}

<

Divmod 2
({}(())(<()>)){({}[()]<({}([{}]()))>)}{}({}[({})])

Hold the div
({}<

Push the mod part
{({}[()]<
((((((()()){}()){}){}){})())
>)}{}

Put div down
>)

Open paren if div non-zero
(({}))
{(<({}<{}
(((((()()){}()){}){}){})
>)>)}{}

Less than 4
([([({})[()()()()](())])](<>)){({}())<>}{}{((<{}>))<>{}}{}<>{}

If
{{}

Make that many 1s
{({}[()]<
((((((()()){}()){}){}){})())
>)}{}

End if
((<()>))}{}

End loop puting number of times run on the stack
>}{})

For each close push and pop
{({}[()]<
((((()()()()()){}){}){}())(((((((()()()()()){}){}){}())){}{})()())
>)}{}

End if
((<()>))}{}

Less than zero
([([({})(())])](<>)){({}())<>}{}{((<{}>))<>{}}{}<>{}

If
{{}

([{}]<

Push open bracket
((((((()()){}()){}()){}){}()){}())

>)

While non-zero
({

Add value if not 1
<(({})[()])>{()(<{}>)}{}

<

Divmod 2
({}(())(<()>)){({}[()]<({}([{}]()))>)}{}({}[({})])

Hold the div
({}<

Push the mod part
{({}[()]<
((((((()()){}()){}){}){})())
>)}{}

Put div down
>)

Open paren if div non-zero
(({}))
{(<({}<{}
(((((()()){}()){}){}){})
>)>)}{}

Less than 4
([([({})[()()()()](())])](<>)){({}())<>}{}{((<{}>))<>{}}{}<>{}

If
{{}

Make that many 1s
{({}[()]<
((((((()()){}()){}){}){})())
>)}{}

End if
((<()>))}{}

End loop puting number of times run on the stack
>}{})

For each close push and pop
{({}[()]<
((((()()()()()){}){}){}())(((((((()()()()()){}){}){}())){}{})()())
>)}{}

Push close bracket
((((((()()){}()){}()){}()){}){}())

Endif
((<()>))}{}{}

Remove top character
<>{}

End of main loop
>)}{}{}

Close the open parens
<>>){({}[()]<(((((()()){}()){}){}){}())>)}{}

Reverse code
([]){({}[()]<({}<>)<>>)}{}<>

Try it online!

Output for <your brain-flak code here>, 582 bytes:

([()((()(()(()()()){}){}){}){}]((()(()()){}){}([(()()()){}](()(()){}((()(((()(()()){}){}){}){}){}([(()((((()()){}){}){}){}){}]([(((()()){}){}){}](()(((()()){}){}){}([((()()){}){}]([()(()()){}](()(((((()()){}){}){}){}){}([()(((()(()()()){}){}){}){}]([(()()()){}](()(()(()()){}){}([(()(()()){}){}](()(()((()((()()){}){}){}){}){}([()(()((((()()){}){}){}){}){}]([((()()()){}){}](()(()(()()){}){}([()](()((()(((()()){}){}){}){}){}([(((()((()()){}){}){}){}){}](()(()){}([()((()()()){}){}](()((()()()){}){}(()(()(()((()()){}){}){}){}((()(()(()(()()()){}){}){}){})))))))))))))))))))))))))))