Move some stuff to Utils

src/kemal/helpers/utils.cr

@@ -1,7 +1,30 @@
 module Kemal
-  class Utils
+  module Utils
     def self.path_starts_with_backslash?(path)
       path.starts_with?("/")
     end
+
+    def self.zip_types(path) # https://github.com/h5bp/server-configs-nginx/blob/master/nginx.conf
+      [".htm", ".html", ".txt", ".css", ".js", ".svg", ".json", ".xml", ".otf", ".ttf", ".woff", ".woff2"].includes? File.extname(path)
+    end
+
+    def self.mime_type(path)
+      case File.extname(path)
+      when ".txt"          then "text/plain"
+      when ".htm", ".html" then "text/html"
+      when ".css"          then "text/css"
+      when ".js"           then "application/javascript"
+      when ".png"          then "image/png"
+      when ".jpg", ".jpeg" then "image/jpeg"
+      when ".gif"          then "image/gif"
+      when ".svg"          then "image/svg+xml"
+      when ".xml"          then "application/xml"
+      when ".json"         then "application/json"
+      when ".otf", ".ttf"  then "application/font-sfnt"
+      when ".woff"         then "application/font-woff"
+      when ".woff2"        then "font/woff2"
+      else                      "application/octet-stream"
+      end
+    end
   end
 end

src/kemal/request.cr

@@ -7,6 +7,13 @@ class HTTP::Request
     @override_method ||= check_for_method_override!
   end
 
+  # Checks if method contained in _method param is valid one
+  def self.override_method_valid?(override_method)
+    return false unless override_method.is_a?(String)
+    override_method = override_method.upcase
+    override_method == "PUT" || override_method == "PATCH" || override_method == "DELETE"
+  end
+
   # Checks if request params contain _method param to override request incoming method
   private def check_for_method_override!
     @override_method = @method
@@ -18,11 +25,4 @@ class HTTP::Request
     end
     @override_method
   end
-
-  # Checks if method contained in _method param is valid one
-  def self.override_method_valid?(override_method)
-    return false unless override_method.is_a?(String)
-    override_method = override_method.upcase
-    override_method == "PUT" || override_method == "PATCH" || override_method == "DELETE"
-  end
 end

src/kemal/static_file_handler.cr

@@ -2,6 +2,8 @@
   require "zlib"
 {% end %}
 
+require "./helpers/utils"
+
 module Kemal
   class StaticFileHandler < HTTP::StaticFileHandler
     def call(context)
@@ -52,16 +54,16 @@ module Kemal
       elsif File.exists?(file_path)
         return if self.etag(context, file_path)
         minsize = 860 # http://webmasters.stackexchange.com/questions/31750/what-is-recommended-minimum-object-size-for-gzip-performance-benefits ??
-        context.response.content_type = mime_type(file_path)
+        context.response.content_type = Utils.mime_type(file_path)
         request_headers = context.request.headers
         filesize = File.size(file_path)
         File.open(file_path) do |file|
-          if request_headers.includes_word?("Accept-Encoding", "gzip") && config.is_a?(Hash) && config["gzip"] == true && filesize > minsize && self.zip_types(file_path)
+          if request_headers.includes_word?("Accept-Encoding", "gzip") && config.is_a?(Hash) && config["gzip"] == true && filesize > minsize && Utils.zip_types(file_path)
             context.response.headers["Content-Encoding"] = "gzip"
             Zlib::Deflate.gzip(context.response) do |deflate|
               IO.copy(file, deflate)
             end
-          elsif request_headers.includes_word?("Accept-Encoding", "deflate") && config.is_a?(Hash) && config["gzip"]? == true && filesize > minsize && self.zip_types(file_path)
+          elsif request_headers.includes_word?("Accept-Encoding", "deflate") && config.is_a?(Hash) && config["gzip"]? == true && filesize > minsize && Utils.zip_types(file_path)
             context.response.headers["Content-Encoding"] = "deflate"
             Zlib::Deflate.new(context.response) do |deflate|
               IO.copy(file, deflate)
@@ -85,28 +87,5 @@ module Kemal
       context.response.status_code = 304 # not modified
       return true
     end
-
-    def zip_types(path) # https://github.com/h5bp/server-configs-nginx/blob/master/nginx.conf
-      [".htm", ".html", ".txt", ".css", ".js", ".svg", ".json", ".xml", ".otf", ".ttf", ".woff", ".woff2"].includes? File.extname(path)
-    end
-
-    def mime_type(path)
-      case File.extname(path)
-      when ".txt"          then "text/plain"
-      when ".htm", ".html" then "text/html"
-      when ".css"          then "text/css"
-      when ".js"           then "application/javascript"
-      when ".png"          then "image/png"
-      when ".jpg", ".jpeg" then "image/jpeg"
-      when ".gif"          then "image/gif"
-      when ".svg"          then "image/svg+xml"
-      when ".xml"          then "application/xml"
-      when ".json"         then "application/json"
-      when ".otf", ".ttf"  then "application/font-sfnt"
-      when ".woff"         then "application/font-woff"
-      when ".woff2"        then "font/woff2"
-      else                      "application/octet-stream"
-      end
-    end
   end
 end