Module: Tool::Autoloader

Defined in:
lib/tool/autoloader.rb

Constant Summary collapse

CAPITALIZE = 
%w[version cli]

Class Method Summary collapse

Class Method Details

.append_features(base) ⇒ Object 



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# File 'lib/tool/autoloader.rb', line 48

def self.append_features(base)
  setup(base)
end

.caller_dir ⇒ Object 



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# File 'lib/tool/autoloader.rb', line 52

def self.caller_dir
  caller.each do |line|
    file = File.expand_path(line.split(':', 2).first)
    return File.dirname(file) if file != File.expand_path(__FILE__)
  end
  File.dirname($0)
end

.capitalize(*args) ⇒ Object 



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# File 'lib/tool/autoloader.rb', line 44

def self.capitalize(*args)
  CAPITALIZE.concat(args)
end

.constant_for(file) ⇒ Object 



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# File 'lib/tool/autoloader.rb', line 39

def self.constant_for(file)
  return file.upcase if CAPITALIZE.include? file
  file.split('.', 2).first.split(/[_-]/).map(&:capitalize).join
end

.path_for(constant, full = false) ⇒ Object 



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# File 'lib/tool/autoloader.rb', line 30

def self.path_for(constant, full = false)
  name = constant.name.dup
  name = name[/[^:]+$/] unless full
  name.gsub! /([A-Z]+)([A-Z][a-z])/,'\1_\2'
  name.gsub! /([a-z\d])([A-Z])/,'\1_\2'
  name.gsub! '::', '/'
  name.tr("-", "_").downcase
end

.setup(container, path = caller_dir) ⇒ Object 



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# File 'lib/tool/autoloader.rb', line 5

def self.setup(container, path = caller_dir)
  prefix      = path_for(container)
  full_prefix = path_for(container, true)
  path        = File.expand_path(prefix, path)
  directories = []

  Dir.glob("#{path}/*") do |file|
    base  = File.basename(file, '.rb')
    const = constant_for(base)
    lib   = "#{full_prefix}/#{base}"

    if File.directory? file
      directories << const
    elsif file.end_with? '.rb'
      container.autoload const, lib
    end
  end

  directories.each do |const|
    next if container.const_defined? const
    nested = container.const_set(const, Module.new)
    setup nested, path
  end
end