Class: Sprockets::SasscCompressor

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

Overview

Public: Sass CSS minifier.

To accept the default options

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

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

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ SasscCompressor

Returns a new instance of SasscCompressor.



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# File 'lib/sprockets/sassc_compressor.rb', line 30

def initialize(options = {})
  @options = {
    syntax: :scss,
    style: :compressed,
    source_map_contents: false,
    omit_source_map_url: true,
  }.merge(options).freeze
end

Class Method Details

.call(input) ⇒ Object 



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# File 'lib/sprockets/sassc_compressor.rb', line 26

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

.instance ⇒ Object

Public: Return singleton instance with default options.

Returns SasscCompressor object.



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# File 'lib/sprockets/sassc_compressor.rb', line 22

def self.instance
  @instance ||= new
end

Instance Method Details

#call(input) ⇒ Object 



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

def call(input)
  # SassC requires the template to be modifiable
  input_data = input[:data].frozen? ? input[:data].dup : input[:data]
  engine = Autoload::SassC::Engine.new(input_data, @options.merge(filename: input[:filename], source_map_file: "#{input[:filename]}.map")) 
    
  css = engine.render.sub(/^\n^\/\*# sourceMappingURL=.*\*\/$/m, '')

  begin
    map = SourceMapUtils.format_source_map(JSON.parse(engine.source_map), input)
    map = SourceMapUtils.combine_source_maps(input[:metadata][:map], map)
  rescue SassC::NotRenderedError
    map = input[:metadata][:map]
  end

  { data: css, map: map }
end