Class: Sprockets::SassCompressor

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

Overview

Public: Sass CSS minifier.

To accept the default options

environment.register_bundle_processor 'text/css',
  Sprockets::SassCompressor

Or to pass options to the Sass::Engine class.

environment.register_bundle_processor 'text/css',
  Sprockets::SassCompressor.new({ ... })

Constant Summary collapse

VERSION =
'1'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ SassCompressor

Returns a new instance of SassCompressor.


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# File 'lib/sprockets/sass_compressor.rb', line 39

def initialize(options = {})
  @options = {
    syntax: :scss,
    cache: false,
    read_cache: false,
    style: :compressed
  }.merge(options).freeze
  @cache_key = "#{self.class.name}:#{Autoload::Sass::VERSION}:#{VERSION}:#{DigestUtils.digest(options)}".freeze
end

Instance Attribute Details

#cache_keyObject (readonly)

Returns the value of attribute cache_key


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# File 'lib/sprockets/sass_compressor.rb', line 37

def cache_key
  @cache_key
end

Class Method Details

.cache_keyObject


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# File 'lib/sprockets/sass_compressor.rb', line 33

def self.cache_key
  instance.cache_key
end

.call(input) ⇒ Object


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# File 'lib/sprockets/sass_compressor.rb', line 29

def self.call(input)
  instance.call(input)
end

.instanceObject

Public: Return singleton instance with default options.

Returns SassCompressor object.


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# File 'lib/sprockets/sass_compressor.rb', line 25

def self.instance
  @instance ||= new
end

Instance Method Details

#call(input) ⇒ Object


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# File 'lib/sprockets/sass_compressor.rb', line 49

def call(input)
  css, map = Autoload::Sass::Engine.new(
    input[:data],
    @options.merge(filename: input[:filename])
  ).render_with_sourcemap('')

  css = css.sub("/*# sourceMappingURL= */\n", '')

  map = SourceMapUtils.format_source_map(JSON.parse(map.to_json(css_uri: '')), input)
  map = SourceMapUtils.combine_source_maps(input[:metadata][:map], map)

  { data: css, map: map }
end