package.rb in linecook-1.0.0

- old
+ new
@@ -1,39 +1,57 @@
 require 'linecook/commands/command'
 require 'linecook/cookbook'
-require 'linecook/recipe'
+require 'linecook/package'
+require 'fileutils'
 require 'yaml'
 
 module Linecook
   module Commands
     
-    # ::desc generates a package
+    # :startdoc::desc generates a package
     #
-    # Generates a package.
+    # Generates the package specified at
+    # 'project_dir/packages/package_name.yml'.  The package file should be a
+    # YAML files that specifies a package env.  The full path to package file
+    # can be given instead of package name using the --file option.
     #
+    # If a cookbook file is present in the project_dir then it will be used to
+    # resolve resources available to the package.  See the env command to
+    # interrogate a package env.
     class Package < Command
-      config :cookbook_dir, '.', :short => :d       # the cookbook directory
-      config :force, false, :short => :f, &c.flag   # force creation
+      config :project_dir, '.', :short => :d              # the project directory
+      config :force, false, :short => :f, &c.flag         # force creation
+      config :quiet, false, &c.flag                       # silence output
       
-      def process(source, target=nil)
-        target ||= default_target(source)
+      def process(package_file, package_dir=nil)
+        package_dir ||= default_package_dir(package_file)
+        package_dir = File.expand_path(package_dir)
+        package = Linecook::Package.init(package_file, project_dir)
         
-        if File.exists?(target)
-          if force
-            FileUtils.rm_r(target)
-          else
-            raise "already exists: #{target}"
-          end
+        dependencies = package_dependencies(package) + [package_file]
+        if force || !FileUtils.uptodate?(package_dir, dependencies)
+          package.build
+          package.export(package_dir)
+          $stdout.puts package_dir unless quiet
         end
         
-        log :create, File.basename(target)
+        package_dir
+      end
+      
+      def package_dependencies(package)
+        dependencies = []
+        package.manifest.values.collect do |resources|
+          dependencies.concat resources.values
+        end
         
-        env = Linecook::Cookbook.init(cookbook_dir).env(source)
-        Linecook::Recipe.build(env).export(target)
+        $LOAD_PATH.each do |path|
+          dependencies.concat Dir.glob("#{path}/**/*.rb")
+        end
+        dependencies
       end
       
-      def default_target(source)
-        source.chomp(File.extname(source))
+      def default_package_dir(package_file)
+        package_file.chomp(File.extname(package_file))
       end
     end
   end
 end
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