├── .formatter.exs ├── .gitignore ├── LICENSE.md ├── README.md ├── lib └── beam_to_ex.ex ├── mix.exs ├── mix.lock ├── run.exs └── test ├── beam_to_ex_test.exs ├── helloworld.erl └── test_helper.exs /.formatter.exs: -------------------------------------------------------------------------------- 1 | [ 2 | inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"] 3 | ] 4 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | /_build 2 | /cover 3 | /deps 4 | erl_crash.dump 5 | *.ez 6 | beam_to_ex 7 | 8 | # Vim 9 | *~ 10 | *.swp 11 | *.swo 12 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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There are a lot of codes to be mapped but it works with basic examples. 5 | 6 | This uses [beam_to_ex_ast](https://github.com/olafura/beam_to_ex_ast) 7 | 8 | ## Installation 9 | 10 | mix deps.get 11 | 12 | mix escript.build 13 | 14 | Then you have new command to play with: 15 | 16 | ./beam_to_ex --beam beam_file.beam 17 | 18 | ./beam_to_ex --erl erlang_file.erl 19 | 20 | ## Just for testing 21 | 22 | If you just want to test it out try this: 23 | 24 | mix run run.exs --beam beam_file.beam 25 | 26 | mix run run.exs --erl erlang_file.erl 27 | -------------------------------------------------------------------------------- /lib/beam_to_ex.ex: -------------------------------------------------------------------------------- 1 | defmodule BeamToEx do 2 | def main(args) do 3 | args |> parse_args |> convert 4 | end 5 | 6 | defp parse_args(args) do 7 | {options, _, _} = 8 | OptionParser.parse(args, 9 | switches: [beam: :string, erl: :string] 10 | ) 11 | 12 | options 13 | |> Map.new() 14 | end 15 | 16 | def convert(options) do 17 | mod_beam = 18 | case options do 19 | %{erl: erl} -> 20 | {:ok, mod_beam} = :epp.parse_file(String.to_charlist(erl), []) 21 | mod_beam 22 | 23 | %{beam: beam} -> 24 | {:ok, {_, [{:abstract_code, {_, mod_beam}}]}} = 25 | :beam_lib.chunks(String.to_charlist(beam), [:abstract_code]) 26 | 27 | mod_beam 28 | 29 | _ -> 30 | false 31 | end 32 | 33 | if mod_beam do 34 | mod_ast = BeamToExAst.convert(mod_beam) 35 | 36 | code = Macro.to_string(mod_ast) |> make_pretty() 37 | 38 | try do 39 | code 40 | |> Code.format_string!(migrate: true) 41 | |> IO.puts() 42 | rescue 43 | _ -> IO.puts(code) 44 | end 45 | else 46 | IO.puts("Either user --erl or --beam") 47 | end 48 | end 49 | 50 | def make_pretty(ast) do 51 | ast = Regex.replace(~r/(def)\(([a-zA-Z0-9]+\([a-zA-Z0-9]*\))\)/, ast, "\\1 \\2") 52 | Regex.replace(~r/(defmodule)\(([a-zA-Z0-9]+)\)/, ast, "\\1 \\2") 53 | end 54 | end 55 | -------------------------------------------------------------------------------- /mix.exs: -------------------------------------------------------------------------------- 1 | defmodule BeamToEx.Mixfile do 2 | use Mix.Project 3 | 4 | def project do 5 | [ 6 | app: :beam_to_ex, 7 | version: "0.3.0", 8 | elixir: "~> 1.3-dev", 9 | compilers: Mix.compilers(), 10 | build_embedded: Mix.env() == :prod, 11 | start_permanent: Mix.env() == :prod, 12 | escript: [main_module: BeamToEx], 13 | deps: deps() 14 | ] 15 | end 16 | 17 | # Configuration for the OTP application 18 | # 19 | # Type "mix help compile.app" for more information 20 | def application do 21 | [applications: [:logger]] 22 | end 23 | 24 | # Dependencies can be Hex packages: 25 | # 26 | # {:mydep, "~> 0.3.0"} 27 | # 28 | # Or git/path repositories: 29 | # 30 | # {:mydep, git: "https://github.com/elixir-lang/mydep.git", tag: "0.1.0"} 31 | # 32 | # Type "mix help deps" for more examples and options 33 | defp deps do 34 | [ 35 | {:beam_to_ex_ast, "~> 0.4.1"} 36 | ] 37 | end 38 | end 39 | -------------------------------------------------------------------------------- /mix.lock: -------------------------------------------------------------------------------- 1 | %{ 2 | "beam_to_ex_ast": {:hex, :beam_to_ex_ast, "0.4.1", "ec9a19b9647b82f78e019fb517d2fa813d91d23667df5c1d0e9dffc3705dc1be", [:mix], [{:forms, "~> 0.0.1", [hex: :forms, repo: "hexpm", optional: false]}], "hexpm", "22e53b827bf38be372213c5f6ef15e99e662f5d5ba795471bb64b1a47b58f89c"}, 3 | "forms": {:hex, :forms, "0.0.1", "45f3b10b6f859f95f2c2c1a1de244d63855296d55ed8e93eb0dd116b3e86c4a6", [:rebar3], [], "hexpm", "530f63ed8ed5a171f744fc75bd69cb2e36496899d19dbef48101b4636b795868"}, 4 | "protocol_ex": {:hex, :protocol_ex, "0.4.3", "4acbe35da85109dc40315c1139bb7a65ebc7fc102d384cd8b3038384fbb9b282", [:mix], [], "hexpm", "6ca5ddb3505c9c86f17cd3f19838b34bf89966ae17078f79f81983b6a4391fe9"}, 5 | } 6 | -------------------------------------------------------------------------------- /run.exs: -------------------------------------------------------------------------------- 1 | BeamToEx.main(System.argv()) 2 | -------------------------------------------------------------------------------- /test/beam_to_ex_test.exs: -------------------------------------------------------------------------------- 1 | defmodule BeamToExTest do 2 | use ExUnit.Case 3 | doctest BeamToEx 4 | 5 | test "the truth" do 6 | assert 1 + 1 == 2 7 | end 8 | end 9 | -------------------------------------------------------------------------------- /test/helloworld.erl: -------------------------------------------------------------------------------- 1 | % hello world program 2 | -module(helloworld). 3 | -export([start/0]). 4 | 5 | start() -> 6 | io:fwrite("Hello, world!\n"). 7 | -------------------------------------------------------------------------------- /test/test_helper.exs: -------------------------------------------------------------------------------- 1 | ExUnit.start() 2 | --------------------------------------------------------------------------------