Module: Sprockets::Rails::LegacyAssetUrlHelper

Included in:
Helper
Defined in:
lib/sprockets/rails/legacy_asset_url_helper.rb

Overview

Backports of AssetUrlHelper methods for Rails 2.x and 3.x.

Constant Summary collapse

URI_REGEXP = 
%r{^[-a-z]+://|^(?:cid|data):|^//}
ASSET_EXTENSIONS = 
{
  :javascript => '.js',
  :stylesheet => '.css'
}
ASSET_PUBLIC_DIRECTORIES = 
{
  :audio      => '/audios',
  :font       => '/fonts',
  :image      => '/images',
  :javascript => '/javascripts',
  :stylesheet => '/stylesheets',
  :video      => '/videos'
}

Instance Method Summary collapse

Instance Method Details

#asset_path(source, options = {}) ⇒ Object Also known as: path_to_asset 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 9

def asset_path(source, options = {})
  source = source.to_s
  return "" unless source.present?
  return source if source =~ URI_REGEXP

  tail, source = source[/([\?#].+)$/], source.sub(/([\?#].+)$/, '')

  if extname = compute_asset_extname(source, options)
    source = "#{source}#{extname}"
  end

  if source[0] != ?/
    source = compute_asset_path(source, options)
  end

  relative_url_root = defined?(config.relative_url_root) && config.relative_url_root
  if relative_url_root
    source = "#{relative_url_root}#{source}" unless source.starts_with?("#{relative_url_root}/")
  end

  if host = compute_asset_host(source, options)
    source = "#{host}#{source}"
  end

  "#{source}#{tail}"
end

#asset_url(source, options = {}) ⇒ Object 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 37

def asset_url(source, options = {})
  path_to_asset(source, options.merge(:protocol => :request))
end

#audio_path(source, options = {}) ⇒ Object Also known as: path_to_audio 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 122

def audio_path(source, options = {})
  path_to_asset(source, {:type => :audio}.merge(options))
end

#compute_asset_extname(source, options = {}) ⇒ Object 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 46

def compute_asset_extname(source, options = {})
  return if options[:extname] == false
  extname = options[:extname] || ASSET_EXTENSIONS[options[:type]]
  extname if extname && File.extname(source) != extname
end

#compute_asset_host(source = "", options = {}) ⇒ Object 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 66

def compute_asset_host(source = "", options = {})
  request = self.request if respond_to?(:request)

  if defined? config
    host = config.asset_host
  elsif defined? ActionController::Base.asset_host
    host = ActionController::Base.asset_host
  end

  host ||= request.base_url if request && options[:protocol] == :request
  return unless host

  if host.respond_to?(:call)
    arity = host.respond_to?(:arity) ? host.arity : host.method(:call).arity
    args = [source]
    args << request if request && (arity > 1 || arity < 0)
    host = host.call(*args)
  elsif host =~ /%d/
    host = host % (Zlib.crc32(source) % 4)
  end

  if host =~ URI_REGEXP
    host
  else
    protocol = options[:protocol] || (request ? :request : :relative)
    case protocol
    when :relative
      "//#{host}"
    when :request
      "#{request.protocol}#{host}"
    else
      "#{protocol}://#{host}"
    end
  end
end

#compute_asset_path(source, options = {}) ⇒ Object 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 61

def compute_asset_path(source, options = {})
  dir = ASSET_PUBLIC_DIRECTORIES[options[:type]] || ""
  File.join(dir, source)
end

#font_path(source, options = {}) ⇒ Object Also known as: path_to_font 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 127

def font_path(source, options = {})
  path_to_asset(source, {:type => :font}.merge(options))
end

#image_path(source, options = {}) ⇒ Object Also known as: path_to_image 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 112

def image_path(source, options = {})
  path_to_asset(source, {:type => :image}.merge(options))
end

#javascript_path(source, options = {}) ⇒ Object Also known as: path_to_javascript 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 102

def javascript_path(source, options = {})
  path_to_asset(source, {:type => :javascript}.merge(options))
end

#stylesheet_path(source, options = {}) ⇒ Object Also known as: path_to_stylesheet 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 107

def stylesheet_path(source, options = {})
  path_to_asset(source, {:type => :stylesheet}.merge(options))
end

#video_path(source, options = {}) ⇒ Object Also known as: path_to_video 



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# File 'lib/sprockets/rails/legacy_asset_url_helper.rb', line 117

def video_path(source, options = {})
  path_to_asset(source, {:type => :video}.merge(options))
end