implement posix_order flag

lib/yawpa.rb

@@ -12,7 +12,7 @@ module Yawpa
   class InvalidArgumentsException < Exception; end
 
   module_function
-  def parse(params, options)
+  def parse(params, options, flags = {})
     options = _massage_options(options)
     opts = {}
     args = []
@@ -50,6 +50,9 @@ module Yawpa
           end
           short_idx += 1
         end
+      elsif flags[:posix_order]
+        args = params[i, params.length]
+        break
       else
         args << params[i]
       end

spec/yawpa_spec.rb

@@ -201,5 +201,17 @@ describe Yawpa do
       opts[:option].should eq('NEW_VALUE')
       args.should be_empty
     end
+
+    it "ignores options after arguments in posix_order mode" do
+      options = {
+        one: {},
+        two: {},
+      }
+      params = ['--one', 'arg', '--two']
+      opts, args = Yawpa.parse(params, options, posix_order: true)
+      opts[:one].should be_true
+      opts[:two].should be_false
+      args.should eq(['arg', '--two'])
+    end
   end
 end