Subcommand for writing a configuration file.

features/step_definitions/command_line_steps.rb

@@ -164,9 +164,12 @@ Then /^the list of commands should describe the ([^ ]+) command$/ do |command|
   @last_result.should =~ /^\s+\* #{command}\s+- [A-Z].+$/
 end
 
-Then /^the following configuration properties are set in config\/compass\.rb:$/ do |table|
-  # table is a Cucumber::Ast::Table
-  pending
+Then /^the following configuration properties are set in ([^ ]+):$/ do |config_file, table|
+  
+  config = Compass::Configuration::Data.new_from_file(config_file)
+  table.hashes.each do |hash|
+   config.send(hash['property']).should == hash['value']
+  end
 end
 
 Then /^my css is validated$/ do

lib/compass/commands/write_configuration.rb

@@ -2,8 +2,29 @@ require 'compass/commands/project_base'
 
 module Compass
   module Commands
+    module ConfigurationOptionsParser
+      def set_options(opts)
+        opts.banner = %Q{
+          Usage: compass config [path/to/config_file.rb] [options]
+
+          Description:
+            Generate a configuration file for the options specified.
+            Compass will recognize configuration files in the
+            following locations relative to the project root:
+              * #{Compass::Configuration::Helpers::KNOWN_CONFIG_LOCATIONS.join("
+              * ")}
+            Any other location, and you'll need to specify it when working with the command line tool using the -c option.
+
+          Options:
+        }.strip.split("\n").map{|l| l.gsub(/^ {0,10}/,'')}.join("\n")
+
+        super
+      end
+    end
     class WriteConfiguration < ProjectBase
-      
+
+      register :config
+
       include InstallerCommand
 
       def initialize(working_path, options)
@@ -16,6 +37,7 @@ module Compass
       end
 
       def perform
+        directory projectize(File.dirname(options[:configuration_file]))
         installer.write_configuration_files(options[:configuration_file])
       end
 
@@ -27,6 +49,42 @@ module Compass
         false
       end
 
+      class << self
+
+        def option_parser(arguments)
+          parser = Compass::Exec::CommandOptionParser.new(arguments)
+          parser.extend(Compass::Exec::GlobalOptionsParser)
+          parser.extend(Compass::Exec::ProjectOptionsParser)
+          parser.extend(ConfigurationOptionsParser)
+        end
+
+        def usage
+          option_parser([]).to_s
+        end
+
+        def description(command)
+          "Generate a configuration file for the provided command line options."
+        end
+
+        def parse!(arguments)
+          parser = option_parser(arguments)
+          parser.parse!
+          parse_arguments!(parser, arguments)
+          parser.options
+        end
+
+        def parse_arguments!(parser, arguments)
+          if arguments.size == 1
+            parser.options[:configuration_file] = arguments.shift
+          elsif arguments.size == 0
+            # default to the current directory.
+          else
+            raise Compass::Error, "Too many arguments were specified."
+          end
+        end
+
+      end
+
     end
   end
-end
+end