/usr/lib/ruby/vendor_ruby/sass/exec/sass_convert.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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require 'fileutils'
module Sass::Exec
# The `sass-convert` executable.
class SassConvert < Base
# @param args [Array<String>] The command-line arguments
def initialize(args)
super
require 'sass'
@options[:for_tree] = {}
@options[:for_engine] = {:cache => false, :read_cache => true}
end
# Tells optparse how to parse the arguments.
#
# @param opts [OptionParser]
def set_opts(opts)
opts.banner = <<END
Usage: sass-convert [options] [INPUT] [OUTPUT]
Description:
Converts between CSS, indented syntax, and SCSS files. For example,
this can convert from the indented syntax to SCSS, or from CSS to
SCSS (adding appropriate nesting).
END
common_options(opts)
style(opts)
input_and_output(opts)
miscellaneous(opts)
end
# Processes the options set by the command-line arguments,
# and runs the CSS compiler appropriately.
def process_result
require 'sass'
if @options[:recursive]
process_directory
return
end
super
input = @options[:input]
if File.directory?(input)
raise "Error: '#{input.path}' is a directory (did you mean to use --recursive?)"
end
output = @options[:output]
output = input if @options[:in_place]
process_file(input, output)
end
private
def common_options(opts)
opts.separator ''
opts.separator 'Common Options:'
opts.on('-F', '--from FORMAT',
'The format to convert from. Can be css, scss, sass.',
'By default, this is inferred from the input filename.',
'If there is none, defaults to css.') do |name|
@options[:from] = name.downcase.to_sym
raise "sass-convert no longer supports LessCSS." if @options[:from] == :less
unless [:css, :scss, :sass].include?(@options[:from])
raise "Unknown format for sass-convert --from: #{name}"
end
end
opts.on('-T', '--to FORMAT',
'The format to convert to. Can be scss or sass.',
'By default, this is inferred from the output filename.',
'If there is none, defaults to sass.') do |name|
@options[:to] = name.downcase.to_sym
unless [:scss, :sass].include?(@options[:to])
raise "Unknown format for sass-convert --to: #{name}"
end
end
opts.on('-i', '--in-place',
'Convert a file to its own syntax.',
'This can be used to update some deprecated syntax.') do
@options[:in_place] = true
end
opts.on('-R', '--recursive',
'Convert all the files in a directory. Requires --from and --to.') do
@options[:recursive] = true
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 style(opts)
opts.separator ''
opts.separator 'Style:'
opts.on('--dasherize', 'Convert underscores to dashes.') do
@options[:for_tree][:dasherize] = true
end
opts.on('--indent NUM',
'How many spaces to use for each level of indentation. Defaults to 2.',
'"t" means use hard tabs.') do |indent|
if indent == 't'
@options[:for_tree][:indent] = "\t"
else
@options[:for_tree][:indent] = " " * indent.to_i
end
end
opts.on('--old', 'Output the old-style ":prop val" property syntax.',
'Only meaningful when generating Sass.') do
@options[:for_tree][:old] = true
end
end
def input_and_output(opts)
opts.separator ''
opts.separator 'Input and Output:'
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. Requires --from.') do
@options[:input] = $stdin
end
encoding_option(opts)
opts.on('--unix-newlines', 'Use Unix-style newlines in written files.',
('Always true on Unix.' unless Sass::Util.windows?)) do
@options[:unix_newlines] = true if Sass::Util.windows?
end
end
def miscellaneous(opts)
opts.separator ''
opts.separator 'Miscellaneous:'
opts.on('--cache-location PATH',
'The path to save parsed Sass files. Defaults to .sass-cache.') do |loc|
@options[:for_engine][:cache_location] = loc
end
opts.on('-C', '--no-cache', "Don't cache to sassc files.") do
@options[:for_engine][:read_cache] = false
end
opts.on('--trace', :NONE, 'Show a full Ruby stack trace on error') do
@options[:trace] = true
end
end
def process_directory
unless @options[:input] = @args.shift
raise "Error: directory required when using --recursive."
end
output = @options[:output] = @args.shift
raise "Error: --from required when using --recursive." unless @options[:from]
raise "Error: --to required when using --recursive." unless @options[:to]
unless File.directory?(@options[:input])
raise "Error: '#{@options[:input]}' is not a directory"
end
if @options[:output] && File.exist?(@options[:output]) &&
!File.directory?(@options[:output])
raise "Error: '#{@options[:output]}' is not a directory"
end
@options[:output] ||= @options[:input]
if @options[:to] == @options[:from] && !@options[:in_place]
fmt = @options[:from]
raise "Error: converting from #{fmt} to #{fmt} without --in-place"
end
ext = @options[:from]
Sass::Util.glob("#{@options[:input]}/**/*.#{ext}") do |f|
output =
if @options[:in_place]
f
elsif @options[:output]
output_name = f.gsub(/\.(c|sa|sc|le)ss$/, ".#{@options[:to]}")
output_name[0...@options[:input].size] = @options[:output]
output_name
else
f.gsub(/\.(c|sa|sc|le)ss$/, ".#{@options[:to]}")
end
unless File.directory?(File.dirname(output))
puts_action :directory, :green, File.dirname(output)
FileUtils.mkdir_p(File.dirname(output))
end
puts_action :convert, :green, f
if File.exist?(output)
puts_action :overwrite, :yellow, output
else
puts_action :create, :green, output
end
process_file(f, output)
end
end
def process_file(input, output)
input_path, output_path = path_for(input), path_for(output)
if input_path
@options[:from] ||=
case input_path
when /\.scss$/; :scss
when /\.sass$/; :sass
when /\.less$/; raise "sass-convert no longer supports LessCSS."
when /\.css$/; :css
end
elsif @options[:in_place]
raise "Error: the --in-place option requires a filename."
end
if output_path
@options[:to] ||=
case output_path
when /\.scss$/; :scss
when /\.sass$/; :sass
end
end
@options[:from] ||= :css
@options[:to] ||= :sass
@options[:for_engine][:syntax] = @options[:from]
out =
Sass::Util.silence_sass_warnings do
if @options[:from] == :css
require 'sass/css'
Sass::CSS.new(input.read, @options[:for_tree]).render(@options[:to])
else
if input_path
Sass::Engine.for_file(input_path, @options[:for_engine])
else
Sass::Engine.new(input.read, @options[:for_engine])
end.to_tree.send("to_#{@options[:to]}", @options[:for_tree])
end
end
output = input_path if @options[:in_place]
write_output(out, output)
rescue Sass::SyntaxError => e
raise e if @options[:trace]
file = " of #{e.sass_filename}" if e.sass_filename
raise "Error on line #{e.sass_line}#{file}: #{e.message}\n Use --trace for backtrace"
rescue LoadError => err
handle_load_error(err)
end
def path_for(file)
return file.path if file.is_a?(File)
return file if file.is_a?(String)
end
end
end
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