made form parser easier to use

examples/form/form.ru

@@ -2,17 +2,12 @@
 
 $LOAD_PATH.unshift("#{File.dirname(__FILE__)}/lib")
 require 'hyde'
-require 'hyde/util/multipart'
-require 'hyde/util/header'
 
 app = Hyde::Server.new do
   root ENV["PWD"]
   index ["index.html"]
   post "/" do
-    _, opts = Hyde::Util.parse_value(request.headers["content-type"])
-    puts Hyde::Util::MultipartParser.new(
-      request.input, opts["boundary"]
-    ).to_h.pretty_inspect
+    puts form.pretty_inspect if form?
     bounce
   end
   serve "*.html"

examples/logging.ru

@@ -12,8 +12,9 @@ app = Hyde::Server.new do
   end
   path "important" do
     preprocess do |req|
+
       # Implement logging logic here
-      puts "Client at #{req.headers['REMOTE_ADDR']} wanted to access something /important!"
+      puts "Client at #{req.headers['remote-addr']} wanted to access something /important!"
     end
     get "answer" do
       header "content-type", "application/json"

lib/hyde/dsl/common_methods.rb

@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+module Hyde
+  module DSL
+    # Methods shared by probes, preprocessors and filters.
+    module CommonMethods
+      # Stop execution and generate a boilerplate response with the given code
+      # @param errorcode [Integer]
+      # @param backtrace [Array(String), nil]
+      # @raise [UncaughtThrowError] throws :finish to return back to Server
+      def die(errorcode, backtrace: nil)
+        throw :finish, [errorcode].append(
+          *(@origin.properties["handle.#{errorcode}"] or
+            @origin.properties["handle.default"]).call(
+              errorcode,
+              backtrace: backtrace
+            )
+        )
+      end
+
+      # Bounce request to the next handler
+      # @raise [UncaughtThrowError] throws :break to get out of the callback
+      def bounce
+        throw :break
+      end
+    end
+  end
+end

lib/hyde/dsl/probe_methods.rb

@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 require_relative '../response'
+require_relative '../util/multipart'
+require_relative '../util/header'
 
 module Hyde
   module DSL
@@ -12,31 +14,11 @@ module Hyde
         @origin.request
       end
 
-      # Stop execution and generate a boilerplate response with the given code
-      # @param errorcode [Integer]
-      # @param backtrace [Array(String), nil]
-      # @raise [UncaughtThrowError] throws :finish to return back to Server
-      def die(errorcode, backtrace: nil)
-        throw :finish, [errorcode].append(
-          *(@origin.properties["handle.#{errorcode}"] or
-            @origin.properties["handle.default"]).call(
-              errorcode,
-              backtrace: backtrace
-            )
-        )
-      end
-
-      # Bounce request to the next handler
-      # @raise [UncaughtThrowError] throws :break to get out of the callback
-      def bounce
-        throw :break
-      end
-
       # Set response status (generate response if one doesn't exist yet)
       # @param status [Integer] http status code
       def status(status)
-        @response = (@response or Hyde::Response.new)
-        @response.status = status
+        @origin.response = (@origin.response or Hyde::Response.new)
+        @origin.response.status = status
       end
 
       alias code status
@@ -79,6 +61,27 @@ module Hyde
 
         @origin.response.delete_header(key, value)
       end
+
+      # Checks if current request has multipart/form-data associated with it
+      # @return [Boolean]
+      def form?
+        value, opts = Hyde::Util.parse_value(request.headers["content-type"])
+        if value == "multipart/form-data" and
+           opts["boundary"]
+          true
+        else
+          false
+        end
+      end
+
+      # Returns formdata
+      # @return [Hash{String=>(String,Hyde::Util::FormPart)}]
+      def form
+        _, opts = Hyde::Util.parse_value(request.headers["content-type"])
+        Hyde::Util::MultipartParser.new(
+          request.input, opts["boundary"]
+        ).to_h
+      end
     end
   end
 end

lib/hyde/path.rb

@@ -4,10 +4,20 @@ require_relative 'pattern_matching'
 require_relative 'node'
 require_relative 'dsl/path_constructors'
 require_relative 'dsl/path_methods'
+require_relative 'dsl/common_methods'
 require_relative 'util/lookup'
 
 module Hyde
-  # Protected interface that provides DSL context for setup block.
+  # Binding that provides execution context for filters and preprocessors.
+  class ProcessorBinding
+    include Hyde::DSL::CommonMethods
+
+    def initialize(path)
+      @origin = path
+    end
+  end
+
+  # Binding that provides execution context for path setup block.
   class PathBinding
     include Hyde::DSL::PathConstructors
     include Hyde::DSL::PathMethods
@@ -19,6 +29,7 @@ module Hyde
 
   # Primary building block of request navigation.
   class Path < Hyde::Node
+    ProcBinding = Hyde::ProcessorBinding
     Binding = Hyde::PathBinding
 
     # @param path [Object] Object to generate {Hyde::Pattern} from
@@ -32,9 +43,10 @@ module Hyde
       @preprocessors = []
       @postprocessors = []
       @filters = []
-
-      binding = Binding.new(self)
+      # Bindings setup
+      binding = self.class::Binding.new(self)
       binding.instance_exec(&setup)
+      @procbinding = self.class::ProcBinding.new(self)
     end
 
     # Method callback on successful request navigation.
@@ -92,7 +104,7 @@ module Hyde
     # @return [Boolean] true if request passed all filters
     def run_filters(request)
       @filters.each do |filter|
-        return false if filter.call(request).is_a? FalseClass
+        return false unless @procbinding.instance_exec(request, &filter)
       end
       true
     end
@@ -101,7 +113,7 @@ module Hyde
     # @param request [Hyde::Request]
     def run_preprocessors(request)
       @preprocessors.each do |preproc|
-        preproc.call(request)
+        @procbinding.instance_exec(request, &preproc)
       end
     end
 

lib/hyde/probe/binding.rb

@@ -1,12 +1,16 @@
 # frozen_string_literal: true
 
 require_relative "../dsl/probe_methods"
+require_relative "../dsl/common_methods"
 
 module Hyde
+  # Binding that provides execution context for Probes.
   class ProbeBinding
+    include Hyde::DSL::ProbeMethods
+    include Hyde::DSL::CommonMethods
+
     def initialize(origin)
       @origin = origin
     end
-    include Hyde::DSL::ProbeMethods
   end
 end

lib/hyde/util/html.rb

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'cgi/escape'
+
 module Hyde
   module Util
     # HTTP status codes and descriptions
@@ -40,6 +42,7 @@ module Hyde
       415 => 'Unsupported Media Type',
       416 => 'Request Range Not Satisfiable',
       417 => 'Expectation Failed',
+      418 => "I'm a teapot",
       422 => 'Unprocessable Entity',
       423 => 'Locked',
       424 => 'Failed Dependency',
@@ -65,11 +68,14 @@ module Hyde
     # @param str [String]
     # @return [String]
     def self.escape_html(str)
-      str.gsub("&", "&")
-         .gsub("<", "&lt;")
-         .gsub(">", "&gt;")
-         .gsub("\"", "&quot;")
-         .gsub("'", "&#39;")
+      CGI.escapeHTML(str)
+    end
+
+    # Return string with unescaped HTML entities.
+    # @param str [String]
+    # @return [String]
+    def self.unescape_html(str)
+      CGI.unescapeHTML(str)
     end
 
     # rubocop:disable Metrics/MethodLength

lib/hyde/util/query.rb

@@ -5,6 +5,7 @@ require_relative 'sorting'
 
 module Hyde
   module Util
+    # TODO: encoding support????
     # Query string parser
     class Query
       include Hyde::Util::ParserCommon
@@ -16,13 +17,13 @@ module Hyde
       # Shallow query parser (does not do PHP-like array keys)
       # @return [Hash]
       def parse_shallow
-        URI.decode_www_form(@query, Encoding::UTF_8)
+        URI.decode_www_form(@query)
            .sort_by { |array| array[0] }
            .to_h
       end
 
-      # Better(tm) query parser with
-      # Returns a hash with arrays
+      # Better(tm) query parser.
+      # Returns a hash with arrays.
       # Key semantics:
       #
       # - `key=value` creates a key value pair
@@ -30,10 +31,10 @@ module Hyde
       # - `key[index]=value` sets `value` at `index` of array named `key`
       # @return [Hash]
       def parse
-        construct_deep_hash(URI.decode_www_form(@query, Encoding::UTF_8))
+        construct_deep_hash(URI.decode_www_form(@query))
       end
 
-      # Get key from query
+      # Get key from query.
       # @param key [String]
       # @return [String,Array]
       def [](key)