Class: Microengine::Dispatcher

Inherits:
Object
  • Object
show all
Defined in:
lib/dispatcher.rb

Overview

Use FastCGI to return XHTML by HTTP request

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#admin=(value) ⇒ Object (writeonly)

Sets the attribute admin

Parameters:

  • value —

    the value to set the attribute admin to.



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# File 'lib/dispatcher.rb', line 31

def admin=(value)
  @admin = value
end

#cache=(value) ⇒ Object (writeonly)

Sets the attribute cache

Parameters:

  • value —

    the value to set the attribute cache to.



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# File 'lib/dispatcher.rb', line 30

def cache=(value)
  @cache = value
end

#config=(value) ⇒ Object (writeonly)

Sets the attribute config

Parameters:

  • value —

    the value to set the attribute config to.



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# File 'lib/dispatcher.rb', line 27

def config=(value)
  @config = value
end

#logger=(value) ⇒ Object (writeonly)

Sets the attribute logger

Parameters:

  • value —

    the value to set the attribute logger to.



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# File 'lib/dispatcher.rb', line 28

def logger=(value)
  @logger = value
end

#spiders=(value) ⇒ Object (writeonly)

Sets the attribute spiders

Parameters:

  • value —

    the value to set the attribute spiders to.



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# File 'lib/dispatcher.rb', line 29

def spiders=(value)
  @spiders = value
end

Instance Method Details

#language(http, available) ⇒ Object

Select best language for user



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# File 'lib/dispatcher.rb', line 84

def language(http, available)
  # Language selected manually
  if not http.get['lang'].nil?
    return http.get['lang'] if available.include? http.get['lang']
  elsif http.cookie['lang']
    return http.cookie['lang'] if available.include? http.cookie['lang']
  end
  
  # Select user language
  http.langs.each do |lang|
    lang.downcase!
    return lang if available.include? lang
  end
  
  # Select any language
  if available.include? @config['default_language']
    @config['default_language']
  else
    available.first
  end
end

#not_found(http) ⇒ Object

Forward to 404 error



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# File 'lib/dispatcher.rb', line 77

def not_found(http)
  http.status = '404 Not Found'
  http << @cache.get('/404/', language(http, @cache.langs['/404/']))
  http.finish
end

#run ⇒ Object

Start FastCGI



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# File 'lib/dispatcher.rb', line 34

def run
  FCGI.each do |request|
    http = HTTP.new(request)
    
    if @admin.dispatch(http)
      request.finish
      next
    else
      langs = @cache.langs[http.url]
      if langs.nil?
        not_found http
        request.finish
        next
      end
      
      if spider? http.agent
        # Search engine spiders (another i18n logic)
        unless http.get['lang'].nil?
          if langs.include? http.get['lang']
            http << @cache.get(http.url, http.get['lang'])
            request.finish
            next
          end
        end
        http.redirect http.url + '?lang=' + language(http, langs)
      else
        # Human visitor
        if http.get['lang']
          http.set_cookie 'lang', http.get['lang'], 30
          unless langs.include? http.get['lang']
            http.redirect http.url
            request.finish
            next
          end
        end
        http << @cache.get(http.url, language(http, langs))
      end
      request.finish
    end
  end
end

#spider?(agent) ⇒ Boolean

Check HTTP_USER_AGENT value for search engine spiders

Returns:

  • (Boolean) 


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# File 'lib/dispatcher.rb', line 107

def spider?(agent)
  @spiders.each do |spider|
    return true if agent.include? spider
  end
  false
end