Class: Vop::PluginLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/vop/parts/plugin_loader.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(op) ⇒ PluginLoader

Returns a new instance of PluginLoader.



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# File 'lib/vop/parts/plugin_loader.rb', line 11

def initialize(op)
  @op = op

  extend PluginSyntax
end

Instance Attribute Details

#loaded ⇒ Object (readonly)

Returns the value of attribute loaded.



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# File 'lib/vop/parts/plugin_loader.rb', line 9

def loaded
  @loaded
end

Instance Method Details

#load(found, plugin_options = {}) ⇒ Object 



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# File 'lib/vop/parts/plugin_loader.rb', line 35

def load(found, plugin_options = {})
  reset

  (plugins, templates) = [found.plugins, found.templates]

  plugins.each do |plugin_path|
    name = File.basename(plugin_path)

    $logger.debug "loading #{name} from #{plugin_path}"
    plugin = new_plugin(name, plugin_path, plugin_options)

    templates.each do |template|
      template_path = File.dirname(template)
      if plugin_path.start_with? template_path
        $logger.debug "  (applying template #{template_path})"
        template_file = File.join(template_path, "plugin.vop")
        code = File.read(template_file)
        read_plugin(code, template_file)
      end
    end

    plugin_file = File.join(plugin_path, "#{name}.plugin")
    next unless File.exists?(plugin_file)
    $logger.debug "reading plugin '#{name}' from '#{plugin_file}'"

    code = File.read(plugin_file)
    read_plugin(code, plugin_file)
    @loaded << @plugin

    $logger.debug "loaded plugin #{@plugin.name}"
  end

  self
end

#new_plugin(plugin_name, plugin_path, plugin_options = {}) ⇒ Object 



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# File 'lib/vop/parts/plugin_loader.rb', line 21

def new_plugin(plugin_name, plugin_path, plugin_options = {})
  @plugin = Plugin.new(@op, plugin_name, plugin_path, plugin_options)
  @plugin
end

#read_plugin(code, source_file = nil) ⇒ Object 



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# File 'lib/vop/parts/plugin_loader.rb', line 26

def read_plugin(code, source_file = nil)
  begin
    instance_eval(code, source_file)
  rescue => detail
    $logger.warn "problem loading plugin #{@plugin.name} : #{detail.message}\n#{detail.backtrace.join("\n")}"
    raise Errors::PluginLoadError.new(detail)
  end
end

#reset ⇒ Object 



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# File 'lib/vop/parts/plugin_loader.rb', line 17

def reset
  @loaded = []
end