make it possible to call DSL script

bin/dat

@@ -56,6 +56,10 @@ when :make
   puts "making..."
   require 'make'
   Make.command(options)
+when :execute
+  puts "Ececuting: #{options.name}"
+  require 'execute'
+  Execute.file(options)
 when :goto
   Dir.chdir(ENV["DAT_ROOT"])
 when :vm

lib/execute.rb

@@ -0,0 +1,71 @@
+
+module Execute
+
+
+end
+
+
+require 'rubygems'
+require 'ostruct'
+
+# dat execute progress
+# dat execute                   < default Configfile
+
+module Execute
+  def dependency(name)
+    puts "Checking for #{name}..."
+
+    unless gem_installed?(name)
+      puts "Installing #{name}..."
+      system("gem install #{name}")
+    else
+      puts "#{name} is already installed."
+    end
+
+    require name
+  rescue LoadError => e
+    puts "Failed to load #{name}: #{e.message}"
+  end
+
+  def gem_installed?(name)
+    Gem::Specification::find_all_by_name(name).any?
+  end
+
+  def postgres
+    require 'setup/postgresql'
+    puts 'installing postgres'
+    Setup::PostgreSQL.install
+  end
+
+  def service(name)
+    if block_given?
+      context = OpenStruct.new
+      output = yield context
+      puts output
+      puts "context: #{context}"
+    else
+      puts "No block provided"
+    end
+  end
+
+  def user(name)
+    puts "Creating user: #{name}"
+  end
+
+  def install(*packages) 
+    packages.each do |pkg|
+      puts "Installing #{pkg}"
+    end
+  end
+
+  def self.file(options)
+    puts "options: #{options}"
+    dsl = Object.new
+    dsl.extend(Execute)
+    # Configfile
+    path = File.join(Dir.pwd, options.name || "./Configfile")
+    dsl.instance_eval(File.read(path), path)
+    # Execute the config
+  end
+end
+