Added localization option for msi packager

docs/Building on Windows.md

@@ -38,6 +38,7 @@ package :msi do
   parameters {
     'KeyThing' => 'ValueThing'
   }
+  localization 'da-dk'
 end
 ```
 
@@ -53,5 +54,6 @@ Some DSL methods available include:
 | :----------------: | ------------------------------------------------|
 | **`upgrade_code`** | The unique GUID for this package                |
 | `parameters`       | And arbirtary list of key-value pairs to render |
+| `localization`     | The language to display in the UI               |
 
 For more information, please see the [`Packager::MSI` documentation](http://www.rubydoc.info/github/chef/omnibus/Omnibus/Packager/MSI).

lib/omnibus/packagers/msi.rb

@@ -248,6 +248,29 @@ def fast_msi(val = false)
     end
     expose :fast_msi
 
+    #
+    # Set or retrieve the localization. Take a look at
+    # this list[https://www.firegiant.com/wix/tutorial/user-interface/do-you-speak-english/]
+    # of valid localizations.
+    #
+    # @example
+    #   localization 'de-de'
+    #
+    # @param [String] val
+    #   the localization to set
+    #
+    # @return [String]
+    #   the set localization
+    #
+    def localization(val = "en-us")
+      unless val.is_a?(String)
+        raise InvalidValue.new(:localization, "be a String")
+      end
+
+      @localization ||= val
+    end
+    expose :localization
+
     #
     # Discovers a path to a gem/file included in a gem under the install directory.
     #
@@ -311,8 +334,8 @@ def resources_dir
     # @return [void]
     #
     def write_localization_file
-      render_template(resource_path("localization-en-us.wxl.erb"),
-        destination: "#{staging_dir}/localization-en-us.wxl",
+      render_template(resource_path("localization-#{localization}.wxl.erb"),
+        destination: "#{staging_dir}/localization-#{localization}.wxl",
         variables: {
           name: project.package_name,
           friendly_name: project.friendly_name,
@@ -492,8 +515,8 @@ def light_command(out_file, is_bundle: false)
           -ext WixUIExtension
           -ext WixBalExtension
           #{wix_extension_switches(wix_light_extensions)}
-          -cultures:en-us
-          -loc "#{windows_safe_path(staging_dir, 'localization-en-us.wxl')}"
+          -cultures:#{localization}
+          -loc "#{windows_safe_path(staging_dir, "localization-#{localization}.wxl")}"
           bundle.wixobj
           -out "#{out_file}"
         EOH
@@ -504,8 +527,8 @@ def light_command(out_file, is_bundle: false)
             #{wix_light_delay_validation}
             -ext WixUIExtension
             #{wix_extension_switches(wix_light_extensions)}
-            -cultures:en-us
-            -loc "#{windows_safe_path(staging_dir, 'localization-en-us.wxl')}"
+            -cultures:#{localization}
+            -loc "#{windows_safe_path(staging_dir, "localization-#{localization}.wxl")}"
             project-files.wixobj source.wixobj
             -out "#{out_file}"
         EOH

spec/unit/packagers/msi_spec.rb

@@ -90,6 +90,29 @@ module Omnibus
       end
     end
 
+    describe "#localization" do
+      it "is a DSL method" do
+        expect(subject).to have_exposed_method(:localization)
+      end
+
+      it "defaults to String en-us" do
+        expect(subject.localization).to be_a(String)
+        expect(subject.localization).to eq("en-us")
+      end
+
+      it "requires the value to be a String" do
+        expect do
+          subject.localization(Object.new)
+        end.to raise_error(InvalidValue)
+      end
+
+      it "returns the given value" do
+        loc = "te-st"
+        subject.localization(loc)
+        expect(subject.localization).to eq(loc)
+      end
+    end
+
     describe "#package_name" do
       before do
         allow(Config).to receive(:windows_arch).and_return(:foo_arch)