Add multipart support <3

src/kemal.cr

@@ -1,4 +1,5 @@
 require "http"
+require "multipart"
 require "./kemal/*"
 require "./kemal/helpers/*"
 require "./kemal/middleware/*"

src/kemal/cli.cr

@@ -39,7 +39,7 @@ module Kemal
     end
 
     def configure_ssl
-    {% if ! flag?(:without_openssl) %}
+      {% if !flag?(:without_openssl) %}
       if @ssl_enabled
         puts "SSL Key Not Found"; exit unless @key_file
         puts "SSL Certificate Not Found"; exit unless @cert_file

src/kemal/helpers/helpers.cr

@@ -78,3 +78,20 @@ end
 def gzip(status : Bool = false)
   add_handler HTTP::DeflateHandler.new if status
 end
+
+# Parses a multipart/form-data request. This is really useful for file uploads.
+# Consider the example below taking two image uploads as image1, image2. To get the relevant data
+# for each field you can use simple `if/switch` conditional.
+#
+#   post "/upload" do |env|
+#     parse_multipart(env) do |field, data|
+#       image1 = data if field == "image1"
+#       image2 = data if field == "image2"
+#       "Upload complete"
+#     end
+#   end
+def parse_multipart(env)
+  HTTP::FormData.parse(env.request) do |field, data|
+    yield field, data
+  end
+end