some refactors

exe/flatito

@@ -6,7 +6,7 @@ require "flatito"
 require "optparse"
 
 # If no arguments are given, print help
-stdin = STDIN.read unless STDIN.tty?
+stdin = $stdin.read unless $stdin.tty?
 ARGV << "-h" if ARGV.empty? && !stdin
 
 options = {}
@@ -45,13 +45,7 @@ OptionParser.new do |opts|
 end.parse!
 
 if stdin
-  items = Flatito::FlattenYaml.items_from_content(stdin)
-  renderer = Flatito::Renderer.build(options)
-  Flatito::PrintItems.call(renderer, options[:search], items)
+  Flatito.flat_content(stdin, options)
 else
-  begin
-    Flatito.search(ARGV, options)
-  rescue Interrupt
-    warn "\nInterrupted"
-  end
+  Flatito.search(ARGV, options)
 end

lib/flatito.rb

@@ -14,5 +14,13 @@
 module Flatito
   def self.search(paths, options)
     Finder.new(paths, options).call
+  rescue Interrupt
+    warn "\nInterrupted"
+  end
+
+  def self.flat_content(content, options)
+    items = FlattenYaml.items_from_content(content)
+    renderer = Renderer.build(options)
+    PrintItems.call(renderer, options[:search], items)
   end
 end