add OS functions to host

Author: ianfixes

arduino_ci.gemspec

@@ -23,6 +23,8 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
+  spec.add_dependency "os", "~> 1.0"
+
   spec.add_development_dependency "bundler", "~> 1.15"
   spec.add_development_dependency "rspec", "~> 3.0"
   spec.add_development_dependency 'rubocop', '~>0.49.0'

lib/arduino_ci/host.rb

@@ -1,3 +1,5 @@
+require 'os'
+
 module ArduinoCI
 
   # Tools for interacting with the host machine
@@ -31,5 +33,11 @@ def self.run(*args, **kwargs)
       ret
     end
 
+    def self.os
+      return :osx if OS.osx?
+      return :linux if OS.linux?
+      return :windows if OS.windows?
+    end
+
   end
 end