Coveralls::Output.no_color = true to completely disable output colori…

…ng [Fixes #36]

lib/coveralls/output.rb

@@ -26,17 +26,24 @@ module Coveralls
   # or set this environment variable:
   #
   #   COVERALLS_SILENT
+  #
+  # To disable color completely:
+  #
+  #   Coveralls::Output.no_color = true
 
   module Output
-    require 'term/ansicolor'
-    attr_accessor :silent
+    attr_accessor :silent, :no_color
     attr_writer :output
     extend self
 
     def output
       (defined?(@output) && @output) || $stdout
     end
 
+    def no_color?
+      (defined?(@no_color)) && @no_color
+    end
+
     # Public: Formats the given string with the specified color
     # through Term::ANSIColor
     #
@@ -52,10 +59,13 @@ def output
     #
     # Returns the formatted string.
     def format(string, options = {})
-      if options[:color]
-        options[:color].split(/\s/).reverse_each do |color|
-          if Term::ANSIColor.respond_to?(color.to_sym)
-            string = Term::ANSIColor.send(color.to_sym, string)
+      unless no_color?
+        require 'term/ansicolor'
+        if options[:color]
+          options[:color].split(/\s/).reverse_each do |color|
+            if Term::ANSIColor.respond_to?(color.to_sym)
+              string = Term::ANSIColor.send(color.to_sym, string)
+            end
           end
         end
       end

spec/coveralls/output_spec.rb

@@ -57,6 +57,7 @@
 
   describe '.format' do
     it "accepts a color argument" do
+      require 'term/ansicolor'
       string = 'Hello'
       ansi_color_string =  Term::ANSIColor.red(string)
       Coveralls::Output.format(string, :color => 'red').should eq(ansi_color_string)
@@ -77,5 +78,15 @@
       multi_formatted_string = Term::ANSIColor.red{ Term::ANSIColor.underline(string) }
       Coveralls::Output.format(string, :color => 'red underline').should eq(multi_formatted_string)
     end
+
+    context "no color" do
+      before { Coveralls::Output.no_color = true }
+
+      it "does not add color to string" do
+        unformatted_string = "Hi Doggie!"
+        Coveralls::Output.format(unformatted_string, :color => 'red').
+          should eq(unformatted_string)
+      end
+    end
   end
 end