Parent

Sprockets::AssetAttributes

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

These methods should be considered internalish.

Attributes

environment[R]
pathname[R]

Public Class Methods

new(environment, path) click to toggle 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() click to toggle source

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

# File lib/sprockets/asset_attributes.rb, line 105
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
engine_extensions() click to toggle source

Returns an `Array` of engine extensions.

"foo.js.coffee.erb"
# => [".coffee", ".erb"]
# File lib/sprockets/asset_attributes.rb, line 82
def engine_extensions
  exts = extensions

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

  exts.select { |ext| @environment.engines(ext) }
end
engines() click to toggle source

Returns engine classes.

# File lib/sprockets/asset_attributes.rb, line 93
def engines
  engine_extensions.map { |ext| @environment.engines(ext) }
end
expand_root() click to toggle source

Replaces `$root` placeholder with actual environment root.

# File lib/sprockets/asset_attributes.rb, line 17
def expand_root
  pathname.to_s.sub(/^\$root/, environment.root)
end
extensions() click to toggle source

Returns `Array` of extension `String`s.

"foo.js.coffee"
# => [".js", ".coffee"]
# File lib/sprockets/asset_attributes.rb, line 62
def extensions
  @extensions ||= @pathname.basename.to_s.scan(/\.[^.]+/)
end
format_extension() click to toggle source

Returns the format extension.

"foo.js.coffee"
# => ".js"
# File lib/sprockets/asset_attributes.rb, line 71
def format_extension
  extensions.reverse.detect { |ext|
    @environment.mime_types(ext) && !@environment.engines(ext)
  }
end
logical_path() click to toggle source

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.

# File lib/sprockets/asset_attributes.rb, line 44
def logical_path
  raise ArgumentError unless pathname.absolute?

  if root_path = environment.paths.detect { |path| pathname.to_s[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
path_fingerprint() click to toggle source

Gets digest fingerprint.

"foo-0aa2105d29558f3eb790d411d7d8fb66.js"
# => "0aa2105d29558f3eb790d411d7d8fb66"
# File lib/sprockets/asset_attributes.rb, line 122
def path_fingerprint
  pathname.basename(extensions.join).to_s =~ /-([0-9a-f]{7,40})$/ ? $1 : nil
end
path_with_fingerprint(digest) click to toggle source

Injects digest fingerprint into path.

"foo.js"
# => "foo-0aa2105d29558f3eb790d411d7d8fb66.js"
# File lib/sprockets/asset_attributes.rb, line 131
def path_with_fingerprint(digest)
  if old_digest = path_fingerprint
    pathname.sub(old_digest, digest).to_s
  else
    pathname.to_s.sub(/\.(\w+)$/) { |ext| "-#{digest}#{ext}" }
  end
end
processors() click to toggle source

Returns all processors to run on the path.

# File lib/sprockets/asset_attributes.rb, line 98
def processors
  environment.preprocessors(content_type) +
    engines.reverse +
    environment.postprocessors(content_type)
end
relativize_root() click to toggle source

Replaces environment root with `$root` placeholder.

# File lib/sprockets/asset_attributes.rb, line 22
def relativize_root
  pathname.to_s.sub(/^#{Regexp.escape(environment.root)}/, '$root')
end
search_paths() click to toggle source

Returns paths search the load path for.

# File lib/sprockets/asset_attributes.rb, line 27
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

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