format

bin/minisign

@@ -31,11 +31,9 @@ rescue OptionParser::InvalidOption
   exit 1
 end
 
-if options[:G] || options[:R] || options[:G] || options[:S]
-  unless defined? RbNaCl::Hash
-    STDERR.puts "Error: libsodium is not installed!"
-    exit 1
-  end
+if (options[:G] || options[:R] || options[:G] || options[:S]) && !defined? RbNaCl::Hash
+  warn 'Error: libsodium is not installed!'
+  exit 1
 end
 
 Minisign::CLI.generate(options) if options[:G]

lib/minisign.rb

@@ -4,9 +4,9 @@
 require 'base64'
 require 'openssl'
 begin
-    require 'rbnacl'
-rescue LoadError => e
-    # errors handled when invoked (see Minisign::NaCl)
+  require 'rbnacl'
+rescue LoadError
+  # errors handled when invoked (see Minisign::NaCl)
 end
 
 require 'minisign/cli'

lib/minisign/nacl.rb

@@ -1,27 +1,32 @@
+# frozen_string_literal: true
+
 module Minisign
-    module NaCl
-        def self.safely
-            begin
-                yield
-            rescue NameError
-                raise Minisign::LibSodiumDependencyError, 'libsodium is not installed!'
-            end
-        end
-        module Hash
-            module Blake2b
-                def self.digest(*args)
-                    NaCl::safely do
-                        RbNaCl::Hash::Blake2b.digest(*args)
-                    end
-                end
-            end
+  # A module that invokes RbNaCl with user-focused actionable error messages.
+  module NaCl
+    def self.safely
+      yield
+    rescue NameError
+      raise Minisign::LibSodiumDependencyError, 'libsodium is not installed!'
+    end
+
+    module Hash
+      # see RbNaCl::Hash::Blake2b
+      module Blake2b
+        def self.digest(*args)
+          NaCl.safely do
+            RbNaCl::Hash::Blake2b.digest(*args)
+          end
         end
-        module PasswordHash
-            def self.scrypt(*args)
-                NaCl::safely do
-                    RbNaCl::PasswordHash.scrypt(*args)
-                end
-            end
+      end
+    end
+
+    # see RbNaCl::PasswordHash
+    module PasswordHash
+      def self.scrypt(*args)
+        NaCl.safely do
+          RbNaCl::PasswordHash.scrypt(*args)
         end
+      end
     end
-end
+  end
+end