add rake task for automatically wrapping locale files in umd

Author: m90

.gitignore

@@ -1,3 +1,4 @@
 .bundle
 vendor/ruby
 public
+node_modules/

Rakefile

@@ -12,3 +12,39 @@ desc "Open your default browser with the test page"
 task :test do
   sh("open test/index.html")
 end
+
+desc "Automatically wrap given locale files in UMD declarations"
+task :umd, [:files] do |t, args|
+    def indent(str)
+        indented = str.split("\n").map do |line|
+          "  #{line}"
+        end
+        indented.join("\n")
+    end
+
+    def wrap_in_umd(str)
+      <<~HEREDOC
+        (function (factory) {
+          if (typeof define === 'function' && define.amd) {
+            define(['jquery'], factory);
+          } else if (typeof module === 'object' && typeof module.exports === 'object') {
+            factory(require('jquery'));
+          } else {
+            factory(jQuery);
+          }
+        }(function (jQuery) {
+        #{indent(str)}
+        });
+      HEREDOC
+    end
+    
+    matches = Dir.glob(args[:files])
+    puts "Pattern did not match any file" if matches.length == 0
+    matches.each do |file|
+        input = File.read(file)
+        base = Pathname.new(file).basename
+        output = File.open("locales/#{base}", "w")
+        output.write(wrap_in_umd(input))
+        output.close
+    end
+end