Add byte counter

lib/jekyll/liquid_renderer.rb

@@ -22,6 +22,11 @@ module Jekyll
       end
     end
 
+    def increment_bytes(filename, bytes)
+      @stats[filename][:bytes] ||= 0
+      @stats[filename][:bytes] += bytes
+    end
+
     def increment_time(filename, time)
       @stats[filename][:time] ||= 0.0
       @stats[filename][:time] += time

lib/jekyll/liquid_renderer/file.rb

@@ -16,18 +16,28 @@ module Jekyll
 
       def render(*args)
         measure_time do
-          @template.render(*args)
+          measure_bytes do
+            @template.render(*args)
+          end
         end
       end
 
       def render!(*args)
         measure_time do
-          @template.render!(*args)
+          measure_bytes do
+            @template.render!(*args)
+          end
         end
       end
 
       private
 
+      def measure_bytes
+        str = yield
+      ensure
+        @renderer.increment_bytes(@filename, str.bytesize)
+      end
+
       def measure_time
         before = Time.now
         yield

lib/jekyll/liquid_renderer/table.rb

@@ -57,11 +57,11 @@ module Jekyll
     end
 
     def table_widths(data)
-      widths = [ 0, 0, 0 ]
+      widths = []
 
       data.each do |row|
         row.each_with_index do |cell, index|
-          widths[index] = [ cell.length, widths[index] ].max
+          widths[index] = [ cell.length, widths[index] ].compact.max
         end
       end
 
@@ -72,17 +72,23 @@ module Jekyll
       sorted = @stats.sort_by{ |filename, file_stats| -file_stats[:time] }
       sorted = sorted.slice(0, n)
 
-      table = [[ 'Filename', 'Count', 'Total time' ]]
+      table = [[ 'Filename', 'Count', 'Bytes', 'Time' ]]
 
       sorted.each do |filename, file_stats|
         row = []
         row << filename
         row << file_stats[:count].to_s
+        row << format_bytes(file_stats[:bytes])
         row << "%.3f" % file_stats[:time]
         table << row
       end
 
       table
     end
+
+    def format_bytes(bytes)
+      bytes /= 1024.0
+      "%.2fK" % bytes
+    end
   end
 end

test/test_liquid_renderer.rb

@@ -13,9 +13,9 @@ class TestLiquidRenderer < JekyllUnitTest
       output = @renderer.stats_table
 
       expected = [
-        /^Filename\s+|\s+Count\s+|\s+Total time$/,
-        /^-+\++-+\++-+$/,
-        /^_posts\/2010-01-09-date-override\.markdown\s+|\s+\d+\s+|\s+\d+\.\d{3}$/,
+        /^Filename\s+|\s+Count\s+|\s+Bytes\s+|\s+Time$/,
+        /^-+\++-+\++-+\++-+$/,
+        /^_posts\/2010-01-09-date-override\.markdown\s+|\s+\d+\s+|\s+\d+\.\d{2}K\s+|\s+\d+\.\d{3}$/,
       ]
 
       expected.each do |regexp|