Ensure all directory entries before creating archive

lib/warbler/war.rb

@@ -25,6 +25,7 @@ def create(config_or_path)
         war_path = File.join(config_or_path.autodeploy_dir, war_path) if config_or_path.autodeploy_dir
       end
       rm_f war_path
+      ensure_directory_entries
       puts "Creating #{war_path}"
       create_war war_path, @files
     end
@@ -145,6 +146,16 @@ def apply_pathmaps(config, file, pathmaps)
       file
     end
 
+    def ensure_directory_entries
+      files.select {|k,v| !v.nil? }.each do |k,v|
+        dir = File.dirname(k)
+        while dir != "." && !files.has_key?(dir)
+          files[dir] = nil
+          dir = File.dirname(dir)
+        end
+      end
+    end
+
     def create_war(war_file, entries)
       Zip::ZipFile.open(war_file, Zip::ZipFile::CREATE) do |zipfile|
         entries.keys.sort.each do |entry|