class Sprockets::AssetAttributes

‘AssetAttributes` is a wrapper similar to `Pathname` that provides some helper accessors.

These methods should be considered internalish.

Attributes

Public Class Methods

Source

# File lib/sprockets/asset_attributes.rb, line 11
def initialize(environment, path)
  @environment = environment
  @pathname = path.is_a?(Pathname) ? path : Pathname.new(path.to_s)
end

Public Instance Methods

content_type ()

Source

# File lib/sprockets/asset_attributes.rb, line 94
def content_type
  @content_type ||= begin
    if format_extension.nil?
      engine_content_type || 'application/octet-stream'
    else
      @environment.mime_types(format_extension) ||
        engine_content_type ||
        'application/octet-stream'
    end
  end
end

Returns the content type for the pathname. Falls back to ‘application/octet-stream`.

engine_extensions ()

Source

# File lib/sprockets/asset_attributes.rb, line 71
def engine_extensions
  exts = extensions

  if offset = extensions.index(format_extension)
    exts = extensions[offset+1..-1]
  end

  exts.select { |ext| @environment.engines(ext) }
end

Returns an ‘Array` of engine extensions.

"foo.js.coffee.erb"
# => [".coffee", ".erb"]

engines ()

Source

# File lib/sprockets/asset_attributes.rb, line 82
def engines
  engine_extensions.map { |ext| @environment.engines(ext) }
end

Returns engine classes.

extensions ()

Source

# File lib/sprockets/asset_attributes.rb, line 51
def extensions
  @extensions ||= @pathname.basename.to_s.scan(/\.[^.]+/)
end

Returns ‘Array` of extension `String`s.

"foo.js.coffee"
# => [".js", ".coffee"]

format_extension ()

Source

# File lib/sprockets/asset_attributes.rb, line 60
def format_extension
  extensions.reverse.detect { |ext|
    @environment.mime_types(ext) && !@environment.engines(ext)
  }
end

Returns the format extension.

"foo.js.coffee"
# => ".js"

logical_path ()

Source

# File lib/sprockets/asset_attributes.rb, line 34
def logical_path
  if root_path = environment.paths.detect { |path| pathname.to_s[path] }
    path = pathname.to_s.sub("#{root_path}/", '')
    path = pathname.relative_path_from(Pathname.new(root_path)).to_s
    path = engine_extensions.inject(path) { |p, ext| p.sub(ext, '') }
    path = "#{path}#{engine_format_extension}" unless format_extension
    path
  else
    raise FileOutsidePaths, "#{pathname} isn't in paths: #{environment.paths.join(', ')}"
  end
end

Reverse guess logical path for fully expanded path.

This has some known issues. For an example if a file is shaddowed in the path, but is required relatively, its logical path will be incorrect.

processors ()

Source

# File lib/sprockets/asset_attributes.rb, line 87
def processors
  environment.preprocessors(content_type) +
    engines.reverse +
    environment.postprocessors(content_type)
end

Returns all processors to run on the path.

search_paths ()

Source

# File lib/sprockets/asset_attributes.rb, line 17
def search_paths
  paths = [pathname.to_s]

  if pathname.basename(extensions.join).to_s != 'index'
    path_without_extensions = extensions.inject(pathname) { |p, ext| p.sub(ext, '') }
    index_path = path_without_extensions.join("index#{extensions.join}").to_s
    paths << index_path
  end

  paths
end

Returns paths search the load path for.