Merge pull request #16 from skylerto/cleanup

conditional logging

.travis.yml

@@ -2,8 +2,6 @@ sudo: true
 language: ruby
 rvm:
   - 2.5.0
-env:
-  - USE_SUDO: true
 before_install:
   - gem install bundler -v 1.16.1
   - bundle install

lib/litterbox/command.rb

@@ -2,26 +2,37 @@ module Litterbox
   # CLI Command operations
   class Command
     attr_accessor :stdout, :stderr, :process
-    def initialize(cmd)
+    def initialize(cmd, log = ENV['LITTERBOX_LOG'])
       @cmd = cmd
       @cmd = "sudo #{@cmd}" if ENV['USE_SUDO']
       @stdout = ''
       @stderr = ''
+      @log = log
     end
 
     def run_command
       Open3.popen3(@cmd) do |_, out, err, thr|
-        while (line = err.gets)
-          @stderr << line unless line.nil?
-          puts(line)
-        end
-        while (lines = out.gets)
-          @stdout << lines unless lines.nil?
-          puts(lines)
-        end
+        capture_stderr err
+        capture_stdout out
         @process = thr.value
         return @stdout, @stderr, @process
       end
     end
+
+    private
+
+    def capture_stderr(err)
+      while (line = err.gets)
+        @stderr << line unless line.nil?
+        puts(line) if @log
+      end
+    end
+
+    def capture_stdout(out)
+      while (lines = out.gets)
+        @stdout << lines unless lines.nil?
+        puts(lines) if @log
+      end
+    end
   end
 end