Add bin and edit workflow

bin/gems/ethon-0.16.0/lib/ethon/easy/header.rb

@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+module Ethon
+  class Easy
+    # This module contains the logic around adding headers to libcurl.
+    #
+    # @api private
+    module Header
+      # Return headers, return empty hash if none.
+      #
+      # @example Return the headers.
+      #   easy.headers
+      #
+      # @return [ Hash ] The headers.
+      def headers
+        @headers ||= {}
+      end
+
+      # Set the headers.
+      #
+      # @example Set the headers.
+      #   easy.headers = {'User-Agent' => 'ethon'}
+      #
+      # @param [ Hash ] headers The headers.
+      def headers=(headers)
+        headers ||= {}
+        header_list = nil
+        headers.each do |k, v|
+          header_list = Curl.slist_append(header_list, compose_header(k,v))
+        end
+        Curl.set_option(:httpheader, header_list, handle)
+
+        @header_list = header_list && FFI::AutoPointer.new(header_list, Curl.method(:slist_free_all))
+      end
+
+      # Return header_list.
+      #
+      # @example Return header_list.
+      #   easy.header_list
+      #
+      # @return [ FFI::Pointer ] The header list.
+      def header_list
+        @header_list
+      end
+
+      # Compose libcurl header string from key and value.
+      # Also replaces null bytes, because libcurl will complain
+      # otherwise.
+      #
+      # @example Compose header.
+      #   easy.compose_header('User-Agent', 'Ethon')
+      #
+      # @param [ String ] key The header name.
+      # @param [ String ] value The header value.
+      #
+      # @return [ String ] The composed header.
+      def compose_header(key, value)
+        Util.escape_zero_byte("#{key}: #{value}")
+      end
+    end
+  end
+end