gem: add rubocop and fix style

lib/openvpn-status-web/int_patch.rb

@@ -1,16 +1,16 @@
 
 class Integer
   def as_bytes
-    return "1 Byte" if self == 1
-    
-    label = ["Bytes", "KiB", "MiB", "GiB", "TiB"]
+    return '1 Byte' if self == 1
+
+    label = %w[Bytes KiB MiB GiB TiB]
     i = 0
-    num = self.to_f
-    while num >= 1024 do
-      num = num / 1024
+    num = to_f
+    while num >= 1024
+      num /= 1024
       i += 1
     end
-    
+
     "#{format('%.2f', num)} #{label[i]}"
   end
 end

lib/openvpn-status-web/parser/modern_stateless.rb

@@ -10,29 +10,27 @@ module OpenVPNStatusWeb
 
         text.lines.each do |line|
           parts = line.strip.split(sep)
-          status.client_list << parse_client(parts[1..5]) if parts[0] == "CLIENT_LIST"
-          status.routing_table << parse_route(parts[1..4]) if parts[0] == "ROUTING_TABLE"
-          status.global_stats << parse_global(parts[1..2]) if parts[0] == "GLOBAL_STATS"
+          status.client_list << parse_client(parts[1..5]) if parts[0] == 'CLIENT_LIST'
+          status.routing_table << parse_route(parts[1..4]) if parts[0] == 'ROUTING_TABLE'
+          status.global_stats << parse_global(parts[1..2]) if parts[0] == 'GLOBAL_STATS'
         end
 
         status
       end
 
-      private
-
-      def self.parse_client(client)
+      private_class_method def self.parse_client(client)
         client[2] = client[2].to_i
         client[3] = client[3].to_i
         client[4] = DateTime.strptime(client[4], '%a %b %d %k:%M:%S %Y')
         client
       end
 
-      def self.parse_route(route)
+      private_class_method def self.parse_route(route)
         route[3] = DateTime.strptime(route[3], '%a %b %d %k:%M:%S %Y')
         route
       end
 
-      def self.parse_global(global)
+      private_class_method def self.parse_global(global)
         global[1] = global[1].to_i
         global
       end

lib/openvpn-status-web/parser/v1.rb

@@ -13,7 +13,7 @@ module OpenVPNStatusWeb
           (current_section = :rt; next) if line == "ROUTING TABLE\n"
           (current_section = :gs; next) if line == "GLOBAL STATS\n"
           (current_section = :end; next) if line == "END\n"
-      
+
           case current_section
           when :cl
             client_list << line.strip.split(',')

lib/openvpn-status-web/version.rb

@@ -1,4 +1,4 @@
 
 module OpenVPNStatusWeb
-  VERSION = "2.0.0"
+  VERSION = '2.0.0'.freeze
 end