Contents

# This class manages creation of aliases.
module Alias
  class Manager
  
    def initialize #:nodoc:
      @alias_creators = {}
      @verbose = false
      @force = false
    end

    attr_accessor :alias_creators, :verbose, :force
    def alias_types; @alias_creators.keys; end
    
    def factory_create_aliases(alias_type, aliases_hash)
      creator_class_string = "Alias::#{alias_type.camelize}Creator"
      create_options = aliases_hash.slice_off!('auto_alias', 'verbose', 'force')
      create_options['verbose'] = @verbose unless create_options.has_key?('verbose')
      if creator_class = Object.any_const_get(creator_class_string)
        creator_class.create(aliases_hash, create_options)
      else
        puts "Creator class '#{creator_class_string}' not found." if @verbose
        nil
      end
    end
    
    def create_aliases(alias_type, aliases_hash)
      aliases_hash = aliases_hash.dup
      if obj = factory_create_aliases(alias_type.to_s, aliases_hash.dup)
        @alias_creators[alias_type.to_sym] ||= obj
        
        accessor_method = "#{alias_type}_aliases"
        if ! respond_to?(accessor_method)
          self.class.send :attr_accessor, accessor_method
        end
        self.send("#{accessor_method}=", {}) if self.send(accessor_method).nil?
        self.send(accessor_method).merge! obj.alias_map
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
cldwalker-alias-0.1.1	lib/alias/manager.rb