Kosmas · October 20, 2015 12:56 · Oct 20, 2015
diff --git a/percentages_display b/percentages_display
@@ -0,0 +1,46 @@
+  def calculate_perc(i, total)
+    (i * 100 / total).to_i
+  end
+
+  def rate_limit_1_perc?(perc, last_perc, last_updated)
+    # Changes of at least 1% 
+    # once every 20 seconds
+    perc > last_perc && last_updated < Time.now.ago(20.seconds)
+  end
+
+  def rate_limit_5_perc?(perc, last_perc, last_updated)
+    # Changes >5%
+    # once every 10 seconds
+    perc.divmod(5).first > last_perc.divmod(5).first && 
+        last_updated < Time.now.ago(10.seconds)
+  end
+
+  def show_start_end_perc?(i, total)
+    # Show 0% and 100%
+    i == 1 || i == total
+  end
+
+  def main_loop
+    i = 1
+    last_perc ||= 0
+    last_updated ||= Time.now
+    total = e_batch.e_base_records.size
+
+   array_of_records.each do |rec|
+      if show_progress
+        perc = calculate_perc(i, total)
+
+        if rate_limit_1_perc?(perc, last_perc, last_updated) ||
+           rate_limit_5_perc?(perc, last_perc, last_updated) ||
+           show_start_end_perc?(i, total)
+
+          print "#{perc}% "
+
+          $stdout.flush
+          last_updated = Time.now
+        end
+        i += 1
+        last_perc = perc
+      end
+    end
+  end
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