Yield output based on ui opts

lib/vagrant/ui.rb

@@ -32,7 +32,7 @@ module Vagrant
 
       def initialize
         @logger   = Log4r::Logger.new("vagrant::ui::interface")
-        @opts     = {}
+        @opts     = { :show_progress => true }
 
         @stdin  = $stdin
         @stdout = $stdout
@@ -75,6 +75,12 @@ module Vagrant
       def machine(type, *data)
         @logger.info("Machine: #{type} #{data.inspect}")
       end
+
+      def output_if_showing_progress
+        if @opts[:show_progress] == true
+          yield self
+        end
+      end
     end
 
     # This is a UI implementation that does nothing.

lib/vagrant/util/curl_helper.rb

@@ -82,10 +82,11 @@ module Vagrant
             # 9 - Time spent
             # 10 - Time left
             # 11 - Current speed
-
             output = "Progress: #{columns[0]}% (Rate: #{columns[11]}/s, Estimated time remaining: #{columns[10]})"
-            ui.clear_line
-            ui.detail(output, new_line: false)
+            ui.output_if_showing_progress do |ui|
+              ui.clear_line
+              ui.detail(output, new_line: false)
+            end
           end
         end
 

test/unit/vagrant/ui_test.rb

@@ -110,6 +110,18 @@ describe Vagrant::UI::Basic do
       subject.detail(output)
     end
   end
+
+  context "#output_if_showing_progress" do
+    it "yields an output" do
+      subject.opts[:show_progress] = true
+      expect { |b| subject.output_if_showing_progress(&b) }.to yield_control
+    end
+
+    it "does not yield an output" do
+      subject.opts[:show_progress] = false
+      expect { |b| subject.output_if_showing_progress(&b) }.to_not yield_control
+    end
+  end
 end
 
 describe Vagrant::UI::Colored do