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pluggability 0.5.0

Pluggability is a toolkit for creating plugins. It provides a mixin that extends your class with methods to load and instantiate its subclasses by name. So instead of: require 'acme/adapter/png' png_adapter = Acme::Adapter::PNG.new( 'file.png' ) you can do: require 'acme/adapter' png_adapter = Acme::Adapter.create( :png, 'file.png' ) A full example of where this might be useful is in a program which generates output with a 'driver' object, which provides a unified interface but generates different kinds of output. First the abstract base class, which is extended with Pluggability: # in mygem/driver.rb: require 'pluggability' require 'mygem' unless defined?( MyGem ) class MyGem::Driver extend Pluggability plugin_prefixes "mygem/drivers" end We can have one driver that outputs PDF documents: # mygem/drivers/pdf.rb: require 'mygem/driver' unless defined?( MyGem::Driver ) class MyGem::Driver::PDF < Driver ...implementation... end and another that outputs plain ascii text: #mygem/drivers/ascii.rb: require 'mygem/driver' unless defined?( MyGem::Driver ) class MyGem::Driver::ASCII < Driver ...implementation... end Now the driver is configurable by the end-user, who can just set it by its short name: require 'mygem' config[:driver_type] #=> "pdf" driver = MyGem::Driver.create( config[:driver_type] ) driver.class #=> MyGem::Driver::PDF # You can also pass arguments to the constructor, too: ascii_driver = MyGem::Driver.create( :ascii, :columns => 80 )

Gemfile:
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install:
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Versions:

  1. 0.9.0 June 08, 2023 (18 KB)
  2. 0.8.0 December 01, 2022 (18 KB)
  3. 0.7.0 February 05, 2020 (23.5 KB)
  4. 0.6.0 March 21, 2018 (25 KB)
  5. 0.5.0 January 19, 2018 (25 KB)
Show all versions (14 total)

Runtime Dependencies (1):

loggability ~> 0.12

Development Dependencies (5):

hoe ~> 3.16
hoe-deveiate ~> 0.9
hoe-highline ~> 0.2
hoe-mercurial ~> 1.4
rdoc ~> 5.1

Owners:

Authors:

  • Martin Chase, Michael Granger

SHA 256 checksum:

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Total downloads 44,487

For this version 9,452

Version Released:

License:

BSD-3-Clause

Required Ruby Version: >= 2.3.4

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