Module: Nucleon::Gems

Defined in:
lib/core/gems.rb

Constant Summary collapse

@@core = 
nil
@@gems = 
{}
@@gateways = 
[]

Class Method Summary collapse

Class Method Details

.core ⇒ Object 



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# File 'lib/core/gems.rb', line 20

def self.core
  @@core
end

.each_gem(&block) ⇒ Object

Utilities



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# File 'lib/core/gems.rb', line 99

def self.each_gem(&block)
  if defined?(Gem)
    if ! defined?(Bundler) && Gem::Specification.respond_to?(:latest_specs)
      logger.debug("Not using bundler")
      Gem::Specification.latest_specs(true).each do |spec|
        block.call(spec)
      end
    else
      logger.debug("Using bundler or Gem specification without latest_specs")
      Gem.loaded_specs.each do |name, spec|
        block.call(spec)
      end
    end
  end
end

.exist?(*names) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/core/gems.rb', line 117

def self.exist?(*names)
  checks = Hash[names.map{|name| [ name.to_s, true ] }]
  each_gem do |spec|
    checks.delete(spec.name.to_s)
  end
  checks.empty? ? true : false
end

.gateway(name) ⇒ Object 



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# File 'lib/core/gems.rb', line 26

def self.gateway(name)
  unless @@gateways.include?(name.to_s)
    @@gateways << name.to_s
  end
end

.logger ⇒ Object

Gem interface



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# File 'lib/core/gems.rb', line 14

def self.logger
  Core.logger
end

.register(reset = false, loaded = []) ⇒ Object 



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# File 'lib/core/gems.rb', line 40

def self.register(reset = false, loaded = [])
  if reset || Util::Data.empty?(@@gems)
    logger.info("Registering external gem defined Nucleon plugins at #{Time.now}")

    each_gem do |spec|
      register_gem(spec, loaded)
    end
  end
  @@gems
end

.register_gem(spec, loaded = []) ⇒ Object 



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# File 'lib/core/gems.rb', line 53

def self.register_gem(spec, loaded = [])
  name      = spec.name.to_sym
  base_path = File.join(spec.full_gem_path, 'lib')
  loaded    = loaded.collect {|item| item.to_sym }

  if name == :nucleon
    logger.debug("Setting Nucleon core gemspec")
    @@core       = spec
    @@gems[name] = {
      :spec       => spec,
      :base_path  => base_path,
      :namespaces => [ :nucleon ]
    }
  else
    Manager.connection.register(base_path) do |data|
      namespace   = data[:namespace]
      plugin_path = data[:directory]

      unless @@gems.has_key?(name)
        logger.info("Registering gem #{name} at #{plugin_path} at #{Time.now}")

        unless @@gateways.include?(name.to_s) || loaded.include?(name)
          base_loader = File.join(base_path, "#{name}_base.rb")
          loader      = File.join(base_path, "#{name}.rb")

          if File.exists?(base_loader)
            require base_loader
          elsif File.exists?(loader)
            require loader
          end
        end
      end

      @@gems[name] = {
        :spec       => spec,
        :base_path  => base_path,
        :namespaces => []
      }
      @@gems[name][:namespaces] << namespace unless @@gems[name][:namespaces].include?(namespace)
    end
  end
end

.registered ⇒ Object 



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# File 'lib/core/gems.rb', line 34

def self.registered
  @@gems
end

.spec(name) ⇒ Object 



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# File 'lib/core/gems.rb', line 141

def self.spec(name)
  results = specs(name)
  return results[0] unless results.empty?
  nil
end

.specs(*names) ⇒ Object 



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# File 'lib/core/gems.rb', line 127

def self.specs(*names)
  checks = Hash[names.map{|name| [ name.to_s, true ] }]
  specs  = []

  each_gem do |spec|
    if checks.has_key?(spec.name.to_s)
      specs << spec
    end
  end
  specs
end