added erlang support

README.md

@@ -70,6 +70,8 @@ Or Settings/Preferences ➔ Packages ➔ Search for `atom-beautify`
 - [x] [TypeScript](https://github.com/Glavin001/atom-beautify/issues/49)
 - [x] [Haskell](https://github.com/Glavin001/atom-beautify/issues/628)
   - Requires [stylish-haskell](https://github.com/jaspervdj/stylish-haskell)
+- [x] [Erlang]()
+  - Requires erlang syntax_tools to be installed
 
 ## Usage
 

src/beautifiers/erl_tidy.coffee

@@ -0,0 +1,26 @@
+###
+Requires https://github.com/hhatto/autopep8
+###
+
+"use strict"
+Beautifier = require('./beautifier')
+
+module.exports = class ErlTidy extends Beautifier
+
+  name: "erl_tidy"
+
+  options: {
+    Erlang: true
+  }
+
+  beautify: (text, language, options) ->
+    tempFile = undefined
+    @tempFile("input", text).then((path) =>
+      tempFile = path
+      @run("erl", [
+        ["-eval", 'erl_tidy:file("' + tempFile + '")']
+        ["-noshell", "-s", "init", "stop"]
+        ])
+    ).then(=>
+      @readFile(tempFile)
+    )

src/beautifiers/index.coffee

@@ -57,6 +57,7 @@ module.exports = class Beautifiers extends EventEmitter
     'tidy-markdown'
     'typescript-formatter'
     'yapf'
+    'erl_tidy'
   ]
 
   ###

src/languages/erlang.coffee

@@ -0,0 +1,21 @@
+module.exports = {
+
+  name: "Erlang"
+  namespace: "erlang"
+  fallback: []
+
+  ###
+  Supported Grammars
+  ###
+  grammars: [
+    "Erlang"
+  ]
+
+  ###
+  Supported extensions
+  ###
+  extensions: ['erl']
+
+  options: []
+
+}

src/languages/index.coffee

@@ -22,6 +22,7 @@ module.exports = class Languages
     "d"
     "ejs"
     "erb"
+    "erlang"
     "gherkin"
     "go"
     "fortran"