split Pixbuf loader process.

app.rb

@@ -99,6 +99,27 @@ def prepare_real_name(name)
   end
 end
 
+def load_pixbuf(info)
+  screen_name = info[:screen_name]
+  profile_image_url = info[:profile_image_url]
+  *profile_image_url_components = profile_image_url.split(/\//)
+  profile_image_last_component = profile_image_url_components.last
+  profile_image_url_components[-1] =
+    u(profile_image_last_component.gsub(/_normal\.([a-zA-Z]+)\z/, '.\1'))
+  profile_image_url = profile_image_url_components.join("/")
+
+  extension = $1
+  image_data = cache_file("images", "#{screen_name}.#{extension}") do
+    open(profile_image_url, "rb") do |image_file|
+      image_file.read
+    end
+  end
+  loader = Gdk::PixbufLoader.new
+  loader.write(image_data)
+  loader.close
+  loader.pixbuf
+end
+
 def render_to_surface_big(surface, scale, paper, info, font)
   margin = paper.width * 0.03
   image_width = image_height = paper.width * 0.3
@@ -139,22 +160,7 @@ def render_to_surface_big(surface, scale, paper, info, font)
   context.move_to(margin, paper.height - layout.pixel_size[1] - margin)
   context.show_pango_layout(layout)
 
-  *profile_image_url_components = info[:profile_image_url].split(/\//)
-  profile_image_last_component = profile_image_url_components.last
-  profile_image_url_components[-1] =
-    u(profile_image_last_component.gsub(/_normal\.([a-zA-Z]+)\z/, '.\1'))
-  profile_image_url = profile_image_url_components.join("/")
-
-  extension = $1
-  image_data = cache_file("images", "#{screen_name}.#{extension}") do
-    open(profile_image_url, "rb") do |image_file|
-      image_file.read
-    end
-  end
-  loader = Gdk::PixbufLoader.new
-  loader.write(image_data)
-  loader.close
-  pixbuf = loader.pixbuf
+  pixbuf = load_pixbuf(info)
   if pixbuf
     context.save do
       context.translate(paper.width - image_width - margin,