/usr/lib/ruby/vendor_ruby/sass/exec/sass_scss.rb is in ruby-sass 3.4.6-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# The `sass` and `scss` executables.
class SassScss < Base
attr_reader :default_syntax
# @param args [Array<String>] The command-line arguments
def initialize(args, default_syntax)
super(args)
@options[:sourcemap] = :auto
@options[:for_engine] = {
:load_paths => default_sass_path
}
@default_syntax = default_syntax
end
protected
# Tells optparse how to parse the arguments.
#
# @param opts [OptionParser]
def set_opts(opts)
opts.banner = <<END
Usage: #{default_syntax} [options] [INPUT] [OUTPUT]
Description:
Converts SCSS or Sass files to CSS.
END
common_options(opts)
watching_and_updating(opts)
input_and_output(opts)
miscellaneous(opts)
end
# Processes the options set by the command-line arguments,
# and runs the Sass compiler appropriately.
def process_result
require 'sass'
if !@options[:update] && !@options[:watch] &&
@args.first && colon_path?(@args.first)
if @args.size == 1
@args = split_colon_path(@args.first)
else
@options[:update] = true
end
end
load_compass if @options[:compass]
return interactive if @options[:interactive]
return watch_or_update if @options[:watch] || @options[:update]
super
if @options[:sourcemap] != :none && @options[:output_filename]
@options[:sourcemap_filename] = Sass::Util.sourcemap_name(@options[:output_filename])
end
@options[:for_engine][:filename] = @options[:filename]
@options[:for_engine][:css_filename] = @options[:output] if @options[:output].is_a?(String)
@options[:for_engine][:sourcemap_filename] = @options[:sourcemap_filename]
@options[:for_engine][:sourcemap] = @options[:sourcemap]
run
end
private
def common_options(opts)
opts.separator ''
opts.separator 'Common Options:'
opts.on('-I', '--load-path PATH', 'Specify a Sass import path.') do |path|
(@options[:for_engine][:load_paths] ||= []) << path
end
opts.on('-r', '--require LIB', 'Require a Ruby library before running Sass.') do |lib|
require lib
end
opts.on('--compass', 'Make Compass imports available and load project configuration.') do
@options[:compass] = true
end
opts.on('-t', '--style NAME', 'Output style. Can be nested (default), compact, ' \
'compressed, or expanded.') do |name|
@options[:for_engine][:style] = name.to_sym
end
opts.on("-?", "-h", "--help", "Show this help message.") do
puts opts
exit
end
opts.on("-v", "--version", "Print the Sass version.") do
puts("Sass #{Sass.version[:string]}")
exit
end
end
def watching_and_updating(opts)
opts.separator ''
opts.separator 'Watching and Updating:'
opts.on('--watch', 'Watch files or directories for changes.',
'The location of the generated CSS can be set using a colon:',
" #{@default_syntax} --watch input.#{@default_syntax}:output.css",
" #{@default_syntax} --watch input-dir:output-dir") do
@options[:watch] = true
end
# Polling is used by default on Windows.
unless Sass::Util.windows?
opts.on('--poll', 'Check for file changes manually, rather than relying on the OS.',
'Only meaningful for --watch.') do
@options[:poll] = true
end
end
opts.on('--update', 'Compile files or directories to CSS.',
'Locations are set like --watch.') do
@options[:update] = true
end
opts.on('-f', '--force', 'Recompile every Sass file, even if the CSS file is newer.',
'Only meaningful for --update.') do
@options[:force] = true
end
opts.on('--stop-on-error', 'If a file fails to compile, exit immediately.',
'Only meaningful for --watch and --update.') do
@options[:stop_on_error] = true
end
end
def input_and_output(opts)
opts.separator ''
opts.separator 'Input and Output:'
if @default_syntax == :sass
opts.on('--scss',
'Use the CSS-superset SCSS syntax.') do
@options[:for_engine][:syntax] = :scss
end
else
opts.on('--sass',
'Use the indented Sass syntax.') do
@options[:for_engine][:syntax] = :sass
end
end
# This is optional for backwards-compatibility with Sass 3.3, which didn't
# enable sourcemaps by default and instead used "--sourcemap" to do so.
opts.on(:OPTIONAL, '--sourcemap=TYPE',
'How to link generated output to the source files.',
' auto (default): relative paths where possible, file URIs elsewhere',
' file: always absolute file URIs',
' inline: include the source text in the sourcemap',
' none: no sourcemaps') do |type|
if type && !%w[auto file inline none].include?(type)
$stderr.puts "Unknown sourcemap type #{type}.\n\n"
$stderr.puts opts
exit
elsif type.nil?
Sass::Util.sass_warn <<MESSAGE.rstrip
DEPRECATION WARNING: Passing --sourcemap without a value is deprecated.
Sourcemaps are now generated by default, so this flag has no effect.
MESSAGE
end
@options[:sourcemap] = (type || :auto).to_sym
end
opts.on('-s', '--stdin', :NONE,
'Read input from standard input instead of an input file.',
'This is the default if no input file is specified.') do
@options[:input] = $stdin
end
encoding_option(opts)
opts.on('--unix-newlines', 'Use Unix-style newlines in written files.',
('Always true on Unix.' unless Sass::Util.windows?)) do
@options[:unix_newlines] = true if Sass::Util.windows?
end
opts.on('-g', '--debug-info',
'Emit output that can be used by the FireSass Firebug plugin.') do
@options[:for_engine][:debug_info] = true
end
opts.on('-l', '--line-numbers', '--line-comments',
'Emit comments in the generated CSS indicating the corresponding source line.') do
@options[:for_engine][:line_numbers] = true
end
end
def miscellaneous(opts)
opts.separator ''
opts.separator 'Miscellaneous:'
opts.on('-i', '--interactive',
'Run an interactive SassScript shell.') do
@options[:interactive] = true
end
opts.on('-c', '--check', "Just check syntax, don't evaluate.") do
require 'stringio'
@options[:check_syntax] = true
@options[:output] = StringIO.new
end
opts.on('--precision NUMBER_OF_DIGITS', Integer,
"How many digits of precision to use when outputting decimal numbers.",
"Defaults to #{Sass::Script::Value::Number.precision}.") do |precision|
Sass::Script::Value::Number.precision = precision
end
opts.on('--cache-location PATH',
'The path to save parsed Sass files. Defaults to .sass-cache.') do |loc|
@options[:for_engine][:cache_location] = loc
end
opts.on('-C', '--no-cache', "Don't cache parsed Sass files.") do
@options[:for_engine][:cache] = false
end
opts.on('--trace', :NONE, 'Show a full Ruby stack trace on error.') do
@options[:trace] = true
end
opts.on('-q', '--quiet', 'Silence warnings and status messages during compilation.') do
@options[:for_engine][:quiet] = true
end
end
def load_compass
begin
require 'compass'
rescue LoadError
puts "Unable to load Compass. Please install it e.g. with the following command:"
puts " aptitude install ruby-compass"
exit 1
end
Compass.add_project_configuration
Compass.configuration.project_path ||= Dir.pwd
@options[:for_engine][:load_paths] ||= []
@options[:for_engine][:load_paths] += Compass.configuration.sass_load_paths
end
def interactive
require 'sass/repl'
Sass::Repl.new(@options).run
end
# @comment
# rubocop:disable MethodLength
def watch_or_update
require 'sass/plugin'
Sass::Plugin.options.merge! @options[:for_engine]
Sass::Plugin.options[:unix_newlines] = @options[:unix_newlines]
Sass::Plugin.options[:poll] = @options[:poll]
Sass::Plugin.options[:sourcemap] = @options[:sourcemap]
if @options[:force]
raise "The --force flag may only be used with --update." unless @options[:update]
Sass::Plugin.options[:always_update] = true
end
raise <<MSG if @args.empty?
What files should I watch? Did you mean something like:
#{@default_syntax} --watch input.#{@default_syntax}:output.css
#{@default_syntax} --watch input-dir:output-dir
MSG
if !colon_path?(@args[0]) && probably_dest_dir?(@args[1])
flag = @options[:update] ? "--update" : "--watch"
err =
if !File.exist?(@args[1])
"doesn't exist"
elsif @args[1] =~ /\.css$/
"is a CSS file"
end
raise <<MSG if err
File #{@args[1]} #{err}.
Did you mean: #{@default_syntax} #{flag} #{@args[0]}:#{@args[1]}
MSG
end
# Watch the working directory for changes without adding it to the load
# path. This preserves the pre-3.4 behavior when the working directory was
# on the load path. We should remove this when we can look for directories
# to watch by traversing the import graph.
class << Sass::Plugin.compiler
# We have to use a class var to make this visible to #watched_file? and
# #watched_paths.
# rubocop:disable ClassVars
@@working_directory = Sass::Util.realpath('.').to_s
# rubocop:ensable ClassVars
def watched_file?(file)
super(file) ||
(file =~ /\.s[ac]ss$/ && file.start_with?(@@working_directory + File::SEPARATOR))
end
def watched_paths
@watched_paths ||= super + [@@working_directory]
end
end
dirs, files = @args.map {|name| split_colon_path(name)}.
partition {|i, _| File.directory? i}
files.map! do |from, to|
to ||= from.gsub(/\.[^.]*?$/, '.css')
sourcemap = Sass::Util.sourcemap_name(to) if @options[:sourcemap]
[from, to, sourcemap]
end
dirs.map! {|from, to| [from, to || from]}
Sass::Plugin.options[:template_location] = dirs
Sass::Plugin.on_updated_stylesheet do |_, css, sourcemap|
[css, sourcemap].each do |file|
next unless file
puts_action :write, :green, file
end
end
had_error = false
Sass::Plugin.on_creating_directory {|dirname| puts_action :directory, :green, dirname}
Sass::Plugin.on_deleting_css {|filename| puts_action :delete, :yellow, filename}
Sass::Plugin.on_deleting_sourcemap {|filename| puts_action :delete, :yellow, filename}
Sass::Plugin.on_compilation_error do |error, _, _|
if error.is_a?(SystemCallError) && !@options[:stop_on_error]
had_error = true
puts_action :error, :red, error.message
STDOUT.flush
next
end
raise error unless error.is_a?(Sass::SyntaxError) && !@options[:stop_on_error]
had_error = true
puts_action :error, :red,
"#{error.sass_filename} (Line #{error.sass_line}: #{error.message})"
STDOUT.flush
end
if @options[:update]
Sass::Plugin.update_stylesheets(files)
exit 1 if had_error
return
end
puts ">>> Sass is watching for changes. Press Ctrl-C to stop."
Sass::Plugin.on_template_modified do |template|
puts ">>> Change detected to: #{template}"
STDOUT.flush
end
Sass::Plugin.on_template_created do |template|
puts ">>> New template detected: #{template}"
STDOUT.flush
end
Sass::Plugin.on_template_deleted do |template|
puts ">>> Deleted template detected: #{template}"
STDOUT.flush
end
Sass::Plugin.watch(files)
end
# @comment
# rubocop:enable MethodLength
def run
input = @options[:input]
output = @options[:output]
@options[:for_engine][:syntax] ||= :scss if input.is_a?(File) && input.path =~ /\.scss$/
@options[:for_engine][:syntax] ||= @default_syntax
engine =
if input.is_a?(File) && !@options[:check_syntax]
Sass::Engine.for_file(input.path, @options[:for_engine])
else
# We don't need to do any special handling of @options[:check_syntax] here,
# because the Sass syntax checking happens alongside evaluation
# and evaluation doesn't actually evaluate any code anyway.
Sass::Engine.new(input.read, @options[:for_engine])
end
input.close if input.is_a?(File)
if @options[:sourcemap] != :none && @options[:sourcemap_filename]
relative_sourcemap_path = Sass::Util.relative_path_from(
@options[:sourcemap_filename], Sass::Util.pathname(@options[:output_filename]).dirname)
rendered, mapping = engine.render_with_sourcemap(relative_sourcemap_path.to_s)
write_output(rendered, output)
write_output(mapping.to_json(
:type => @options[:sourcemap],
:css_path => @options[:output_filename],
:sourcemap_path => @options[:sourcemap_filename]) + "\n",
@options[:sourcemap_filename])
else
write_output(engine.render, output)
end
rescue Sass::SyntaxError => e
write_output(Sass::SyntaxError.exception_to_css(e), output) if output.is_a?(String)
raise e
ensure
output.close if output.is_a? File
end
def colon_path?(path)
!split_colon_path(path)[1].nil?
end
def split_colon_path(path)
one, two = path.split(':', 2)
if one && two && Sass::Util.windows? &&
one =~ /\A[A-Za-z]\Z/ && two =~ /\A[\/\\]/
# If we're on Windows and we were passed a drive letter path,
# don't split on that colon.
one2, two = two.split(':', 2)
one = one + ':' + one2
end
return one, two
end
# Whether path is likely to be meant as the destination
# in a source:dest pair.
def probably_dest_dir?(path)
return false unless path
return false if colon_path?(path)
Sass::Util.glob(File.join(path, "*.s[ca]ss")).empty?
end
def default_sass_path
return unless ENV['SASS_PATH']
# The select here prevents errors when the environment's
# load paths specified do not exist.
ENV['SASS_PATH'].split(File::PATH_SEPARATOR).select {|d| File.directory?(d)}
end
end
end
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