cli.rb in nanoc3-3.2.0b1

- old
+ new
@@ -1,12 +1,104 @@
 # encoding: utf-8
 
-# Load Cri
 require 'cri'
 
 module Nanoc3::CLI
-end
 
-# Load CLI
-require 'nanoc3/cli/logger'
-require 'nanoc3/cli/commands'
-require 'nanoc3/cli/base'
+  module Commands
+  end
+
+  # @return [Boolean] true if debug output is enabled, false if not
+  #
+  # @since 3.2.0
+  def self.debug?
+    @debug || false
+  end
+
+  # @param [Boolean] boolean true if debug output should be enabled,
+  #   false if it should not
+  #
+  # @return [void]
+  #
+  # @since 3.2.0
+  def self.debug=(boolean)
+    @debug = boolean
+  end
+
+  autoload 'Logger',             'nanoc3/cli/logger'
+  autoload 'Command',            'nanoc3/cli/command'
+
+  # Invokes the nanoc commandline tool with the given arguments.
+  #
+  # @param [Array<String>] args An array of commandline arguments
+  #
+  # @return [void]
+  def self.run(args)
+    self.setup
+    self.load_custom_commands
+    self.root_command.run(args)
+  end
+
+  # Adds the given command to the collection of available commands.
+  #
+  # @param [Cri::Command] cmd The command to add
+  #
+  # @return [void]
+  def self.add_command(cmd)
+    self.root_command.add_command(cmd)
+  end
+
+protected
+
+  # Makes the commandline interface ready for using by loading the commands.
+  #
+  # @return [void]
+  def self.setup
+    # Don’t set up twice
+    return if @setup
+
+    # Add help command
+    help_cmd = Cri::Command.new_basic_help
+    self.add_command(help_cmd)
+
+    # Add other commands
+    cmd_filenames = Dir[File.dirname(__FILE__) + '/cli/commands/*.rb']
+    cmd_filenames.each do |filename|
+      next if File.basename(filename, '.rb') == 'nanoc'
+      cmd = self.load_command_at(filename)
+      self.add_command(cmd)
+    end
+
+    @setup = true
+  end
+
+  # Loads the commands in `commands/`.
+  #
+  # @return [void]
+  def self.load_custom_commands
+    Dir['commands/*.rb'].each do |filename|
+      cmd = Nanoc3::CLI.load_command_at(filename)
+      Nanoc3::CLI.root_command.add_command(cmd)
+    end
+  end
+
+  # Loads the command in the file with the given filename.
+  #
+  # @param [String] filename The name of the file that contains the command
+  #
+  # @return [Cri::Command] The loaded command
+  def self.load_command_at(filename)
+    code = File.read(filename)
+    cmd = Cri::Command.define(code)
+    cmd.modify { name File.basename(filename, '.rb') }
+    cmd
+  end
+
+  # @return [Cri::Command] The root command, i.e. the commandline tool itself
+  def self.root_command
+    @root_command ||= begin
+      filename = File.dirname(__FILE__) + "/cli/commands/nanoc.rb"
+      self.load_command_at(filename)
+    end
+  end
+
+end