Add configuration option to set MANIFEST.MF.

Add manifest_file configuration option in warble.rb that
specifies a path to a file containing entries that will
be added to the MANIFEST.MF.

[Also, use config.manifest_file in the warble.rb template.]

Signed-off-by: Nick Sieger <nick@nicksieger.com>

generators/warble/templates/warble.rb

@@ -59,6 +59,10 @@
   # of RAILS_ROOT
   # config.war_name = "mywar"
 
+  # Name of the MANIFEST.MF template for the war file. Defaults to the
+  # MANIFEST.MF normally generated by `jar cf`.
+  # config.manifest_file = "config/MANIFEST.MF"
+
   # Value of RAILS_ENV for the webapp -- default as shown below
   # config.webxml.rails.env = ENV['RAILS_ENV'] || 'production'
 
@@ -79,4 +83,4 @@
 
   # JNDI data source name
   # config.webxml.jndi = 'jdbc/rails'
-end
+end

lib/warbler/config.rb

@@ -59,6 +59,10 @@ class Config
     # the Rails application
     attr_accessor :war_name
 
+    # Name of the MANIFEST.MF template.  Defaults to the MANIFEST.MF normally generated
+    # by jar -cf....
+    attr_accessor :manifest_file
+
     # Extra configuration for web.xml. Controls how the dynamically-generated web.xml
     # file is generated.
     #

lib/warbler/task.rb

@@ -172,7 +172,8 @@ def define_jar_task
         task "jar" do
           war_path = "#{config.war_name}.war"
           war_path = File.join(config.autodeploy_dir, war_path) if config.autodeploy_dir
-          sh "jar cf #{war_path} -C #{config.staging_dir} ."
+          flags, manifest = config.manifest_file ? ["cfm", config.manifest_file] : ["cf", ""]
+          sh "jar #{flags} #{war_path} #{manifest} -C #{config.staging_dir} ."
         end
       end
     end
@@ -331,4 +332,4 @@ def apply_pathmaps(file, pathmaps)
       file
     end
   end
-end
+end