Adding configuration and tasks for compiling ruby files.

Manifest.txt

@@ -19,6 +19,7 @@ lib/warbler/version.rb
 lib/warbler/war.rb
 lib/warbler_war.jar
 spec/sample/app/controllers/application.rb
+spec/sample/app/helpers/application_helper.class
 spec/sample/app/helpers/application_helper.rb
 spec/sample/config/boot.rb
 spec/sample/config/database.yml

lib/warbler/config.rb

@@ -81,6 +81,9 @@ class Config
     # This also sets 'gem.path' inside web.xml.
     attr_accessor :gem_path
 
+    # FileList of ruby files to compile to class files
+    attr_accessor :compiled_ruby_files
+
     # Extra configuration for web.xml. Controls how the dynamically-generated web.xml
     # file is generated.
     #
@@ -128,6 +131,7 @@ def initialize(warbler_home = WARBLER_HOME)
       @war_name    = File.basename(@rails_root)
       @bundler     = true
       @webinf_files = default_webinf_files
+      @compiled_ruby_files = FileList[]
       auto_detect_frameworks
       yield self if block_given?
       update_gem_path

lib/warbler/task.rb

@@ -59,6 +59,7 @@ def define_tasks
       define_main_task
       namespace name do
         define_clean_task
+        define_compile_task
         define_files_task
         define_jar_task
         define_debug_task
@@ -99,8 +100,14 @@ def define_clean_task
       task "clear" => "#{name}:clean"
     end
 
+    def define_compile_task
+      task "compile_ruby_files" do
+        war.compile(config)
+      end
+    end
+
     def define_files_task
-      task "files" do
+      task "files" => "compile_ruby_files" do
         war.apply(config)
       end
     end

lib/warbler/war.rb

@@ -17,6 +17,30 @@ def initialize
       @files = {}
     end
 
+    def compile(config)
+      # Need to use the version of JRuby in the application to compile it
+      compiled_ruby_files = config.compiled_ruby_files.to_a
+
+      return if compiled_ruby_files.empty?
+
+      run_javac(config, compiled_ruby_files)
+      replace_compiled_ruby_files(config, compiled_ruby_files)
+    end
+
+    def run_javac(config, compiled_ruby_files)
+      %x{java -classpath #{config.java_libs.join(File::PATH_SEPARATOR)} org.jruby.Main -S jrubyc \"#{compiled_ruby_files.join('" "')}\"}
+    end
+
+    def replace_compiled_ruby_files(config, compiled_ruby_files)
+      # Exclude the rb files and recreate them. This
+      # prevents the original contents being used.
+      config.excludes = compiled_ruby_files
+
+      compiled_ruby_files.each do |ruby_source|
+        files[apply_pathmaps(config, ruby_source, :application)] = StringIO.new("require __FILE__.sub(/\.rb$/, '.class')")
+      end
+    end
+
     # Apply the information in a Warbler::Config object in order to
     # look for files to put into this war file.
     def apply(config)

spec/warbler/task_spec.rb

@@ -82,6 +82,21 @@
     Warbler::Task.new "warble", @config
   end
 
+  it "should compile any ruby files specified" do
+    @config.compiled_ruby_files = FileList["app/helpers/application_helper.rb"]
+    silence { Rake::Task["warble"].invoke }
+
+    java_class_magic_number = [0xCA,0xFE,0xBA,0xBE].map { |magic_char| magic_char.chr }.join
+
+    Zip::ZipFile.open("#{@config.war_name}.war") do |zf|
+      java_class_header     = zf.get_input_stream('WEB-INF/app/helpers/application_helper.class') {|io| io.read }[0..3]
+      ruby_class_definition = zf.get_input_stream('WEB-INF/app/helpers/application_helper.rb') {|io| io.read }
+
+      java_class_header.should == java_class_magic_number
+      ruby_class_definition.should == %{require __FILE__.sub(/.rb$/, '.class')}
+    end
+  end
+
   it "should process symlinks by storing a file in the archive that has the same contents as the source" do
     File.open("config/special.txt", "wb") {|f| f << "special"}
     Dir.chdir("config") { ln_s "special.txt", "link.txt" }