Module: Yap::World::Addons

Defined in:
lib/yap/world/addons.rb

Defined Under Namespace

Classes: RcFile

Class Method Summary collapse

Class Method Details

.load_directories(search_paths) ⇒ Object 



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# File 'lib/yap/world/addons.rb', line 82

def self.load_directories(search_paths)
  Treefell['shell'].puts %|searching for addons in:\n  * #{search_paths.join("\n  * ")}|
  search_paths.map do |directory|
    Dir["#{directory}/*"].map do |d|
      if File.directory?(d)
        Treefell['shell'].puts %|addon found: #{d}|
        load_directory(d).map(&:new)
      else
        Treefell['shell'].puts %|file found in add-on search path, skipping.|
        nil
      end
    end
  end.flatten.compact
end

.load_directory(directory) ⇒ Object 



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# File 'lib/yap/world/addons.rb', line 110

def self.load_directory(directory)
  directory = File.expand_path(directory)
  Treefell['shell'].puts "loading addon from directory: #{directory}"
  namespace = File.basename(directory).
    split(/[_-]/).
    map(&:capitalize).join
  namespace = "#{namespace}Addon"

  if Yap::World::UserAddons.const_defined?(namespace)
    raise LoadError, "#{namespace} is already defined! Failed loading #{file}"
  end

  # Create a wrapper module for every add-on. This is to eliminate
  # namespace collision.
  addon_module = Module.new do
    extend Namespace
    extend AddonMethods::ClassMethods
    const_set :Addon, Addon
  end

  Yap::World::UserAddons.const_set namespace, addon_module
  Treefell['shell'].puts "creating addon namespace: Yap::World::UserAddons::#{namespace}"

  lib_path = File.join directory, "lib"
  Treefell['shell'].puts "prepending addon path to $LOAD_PATH: #{lib_path}"
  $LOAD_PATH.unshift lib_path

  gemfiles = Dir["#{directory}/Gemfile"]
  Treefell['shell'].puts "looking for Gemfile in #{namespace} addon directory: #{directory}"
  if gemfiles.any?
    gemfiles.each do |gemfile|
      Treefell['shell'].puts "loading #{gemfile} for addon"
      eval File.read(gemfile)
    end
  else
    Treefell['shell'].puts "No Gemfile found for #{namespace} addon"
  end

  Dir["#{directory}/*.rb"].map do |addon_file|
    load_file(addon_file, namespace:namespace, dir:directory, addon_module:addon_module)
  end
ensure
  if lib_path
    Treefell['shell'].puts "Removing addon #{lib_path} path from $LOAD_PATH"
    $LOAD_PATH.delete(lib_path)
  end
end

.load_file(file, dir:, namespace:, addon_module:) ⇒ Object 



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# File 'lib/yap/world/addons.rb', line 158

def self.load_file(file, dir:, namespace:, addon_module:)
  Treefell['shell'].puts "loading #{namespace} addon file: #{file}"
  klass_name = file.sub(dir, "").
    sub(/^#{Regexp.escape(File::Separator)}/, "").
    sub(File.extname(file.to_s), "").
    split(File::Separator).
    map{ |m| m.split(/[_-]/).map(&:capitalize).join }.
    join("::")

  addon_module.module_eval IO.read(file), file, lineno=1

  klass_name.split("::").reduce(addon_module) do |ns,name|
    if ns.const_defined?(name)
      ns.const_get(name)
    else
      raise("Did not find #{klass_name} in #{file}")
    end
  end.tap do |loaded_addon|
    Treefell['shell'].puts "loaded #{File.dirname(file)} as #{loaded_addon.inspect}"
  end
end

.load_rcfiles(files) ⇒ Object 



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# File 'lib/yap/world/addons.rb', line 70

def self.load_rcfiles(files)
  Treefell['shell'].puts %|searching for rcfiles:\n  * #{files.join("\n  * ")}|
  files.map do |file|
    if File.exists?(file)
      Treefell['shell'].puts "rcfile #{file} found, loading."
      RcFile.new file
    else
      Treefell['shell'].puts "rcfile #{file} not found, skipping."
    end
  end.flatten.compact
end

.syntax_ok?(file) ⇒ Boolean 



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# File 'lib/yap/world/addons.rb', line 63

def self.syntax_ok?(file)
  `ruby -c #{file}`
  ($?.exitstatus == 0).tap do |result|
    Treefell['shell'].puts "is syntax ok?(#{file.inspect}) #{result}"
  end
end