Class | Haml::Exec::SassConvert |
In: |
lib/haml/exec.rb
|
Parent: | Generic |
The `sass-convert` executable.
@param args [Array<String>] The command-line arguments
# File lib/haml/exec.rb, line 609 609: def initialize(args) 610: super 611: require 'sass' 612: @options[:for_tree] = {} 613: @options[:for_engine] = {:cache => false, :read_cache => true} 614: end
Processes the options set by the command-line arguments, and runs the CSS compiler appropriately.
# File lib/haml/exec.rb, line 689 689: def process_result 690: require 'sass' 691: 692: if @options[:recursive] 693: process_directory 694: return 695: end 696: 697: super 698: input = @options[:input] 699: raise "Error: '#{input.path}' is a directory (did you mean to use --recursive?)" if File.directory?(input) 700: output = @options[:output] 701: output = input if @options[:in_place] 702: process_file(input, output) 703: end
Tells optparse how to parse the arguments.
@param opts [OptionParser]
# File lib/haml/exec.rb, line 619 619: def set_opts(opts) 620: opts.banner = "Usage: sass-convert [options] [INPUT] [OUTPUT]\n\nDescription:\n Converts between CSS, Sass, and SCSS files.\n E.g. converts from SCSS to Sass,\n or converts from CSS to SCSS (adding appropriate nesting).\n\nOptions:\n" 621: 622: opts.on('-F', '--from FORMAT', 623: 'The format to convert from. Can be css, scss, sass, less, or sass2.', 624: 'sass2 is the same as sass, but updates more old syntax to new.', 625: 'By default, this is inferred from the input filename.', 626: 'If there is none, defaults to css.') do |name| 627: @options[:from] = name.downcase.to_sym 628: unless [:css, :scss, :sass, :less, :sass2].include?(@options[:from]) 629: raise "Unknown format for sass-convert --from: #{name}" 630: end 631: try_less_note if @options[:from] == :less 632: end 633: 634: opts.on('-T', '--to FORMAT', 635: 'The format to convert to. Can be scss or sass.', 636: 'By default, this is inferred from the output filename.', 637: 'If there is none, defaults to sass.') do |name| 638: @options[:to] = name.downcase.to_sym 639: unless [:scss, :sass].include?(@options[:to]) 640: raise "Unknown format for sass-convert --to: #{name}" 641: end 642: end 643: 644: opts.on('-R', '--recursive', 645: 'Convert all the files in a directory. Requires --from and --to.') do 646: @options[:recursive] = true 647: end 648: 649: opts.on('-i', '--in-place', 650: 'Convert a file to its own syntax.', 651: 'This can be used to update some deprecated syntax.') do 652: @options[:in_place] = true 653: end 654: 655: opts.on('--dasherize', 'Convert underscores to dashes') do 656: @options[:for_tree][:dasherize] = true 657: end 658: 659: opts.on('--old', 'Output the old-style ":prop val" property syntax.', 660: 'Only meaningful when generating Sass.') do 661: @options[:for_tree][:old] = true 662: end 663: 664: opts.on('-C', '--no-cache', "Don't cache to sassc files.") do 665: @options[:for_engine][:read_cache] = false 666: end 667: 668: unless ::Haml::Util.ruby1_8? 669: opts.on('-E encoding', 'Specify the default encoding for Sass and CSS files.') do |encoding| 670: Encoding.default_external = encoding 671: end 672: end 673: 674: super 675: end
# File lib/haml/exec.rb, line 707 707: def process_directory 708: input = @options[:input] = @args.shift 709: output = @options[:output] = @args.shift 710: raise "Error: --from required when using --recursive." unless @options[:from] 711: raise "Error: --to required when using --recursive." unless @options[:to] 712: raise "Error: '#{@options[:input]}' is not a directory" unless File.directory?(@options[:input]) 713: if @options[:output] && File.exists?(@options[:output]) && !File.directory?(@options[:output]) 714: raise "Error: '#{@options[:output]}' is not a directory" 715: end 716: @options[:output] ||= @options[:input] 717: 718: if @options[:to] == @options[:from] && !@options[:in_place] 719: fmt = @options[:from] 720: raise "Error: converting from #{fmt} to #{fmt} without --in-place" 721: end 722: 723: ext = @options[:from] 724: ext = :sass if ext == :sass2 725: Dir.glob("#{@options[:input]}/**/*.#{ext}") do |f| 726: output = 727: if @options[:in_place] 728: f 729: elsif @options[:output] 730: output_name = f.gsub(/\.(c|sa|sc|le)ss$/, ".#{@options[:to]}") 731: output_name[0...@options[:input].size] = @options[:output] 732: output_name 733: else 734: f.gsub(/\.(c|sa|sc|le)ss$/, ".#{@options[:to]}") 735: end 736: 737: unless File.directory?(File.dirname(output)) 738: puts_action :directory, :green, File.dirname(output) 739: FileUtils.mkdir_p(File.dirname(output)) 740: end 741: puts_action :convert, :green, f 742: if File.exists?(output) 743: puts_action :overwrite, :yellow, output 744: else 745: puts_action :create, :green, output 746: end 747: 748: input = open_file(f) 749: output = @options[:in_place] ? input : open_file(output, "w") 750: process_file(input, output) 751: end 752: end
# File lib/haml/exec.rb, line 754 754: def process_file(input, output) 755: if input.is_a?(File) 756: @options[:from] ||= 757: case input.path 758: when /\.scss$/; :scss 759: when /\.sass$/; :sass 760: when /\.less$/; :less 761: when /\.css$/; :css 762: end 763: elsif @options[:in_place] 764: raise "Error: the --in-place option requires a filename." 765: end 766: 767: if output.is_a?(File) 768: @options[:to] ||= 769: case output.path 770: when /\.scss$/; :scss 771: when /\.sass$/; :sass 772: end 773: end 774: 775: if @options[:from] == :sass2 776: @options[:from] = :sass 777: @options[:for_engine][:sass2] = true 778: end 779: 780: @options[:from] ||= :css 781: @options[:to] ||= :sass 782: @options[:for_engine][:syntax] = @options[:from] 783: 784: out = 785: ::Haml::Util.silence_haml_warnings do 786: if @options[:from] == :css 787: require 'sass/css' 788: ::Sass::CSS.new(input.read, @options[:for_tree]).render(@options[:to]) 789: elsif @options[:from] == :less 790: require 'sass/less' 791: try_less_note 792: input = input.read if input.is_a?(IO) && !input.is_a?(File) # Less is dumb 793: Less::Engine.new(input).to_tree.to_sass_tree.send("to_#{@options[:to]}", @options[:for_tree]) 794: else 795: if input.is_a?(File) 796: ::Sass::Files.tree_for(input.path, @options[:for_engine]) 797: else 798: ::Sass::Engine.new(input.read, @options[:for_engine]).to_tree 799: end.send("to_#{@options[:to]}", @options[:for_tree]) 800: end 801: end 802: 803: output = File.open(input.path, 'w') if @options[:in_place] 804: output.write(out) 805: rescue ::Sass::SyntaxError => e 806: raise e if @options[:trace] 807: file = " of #{e.sass_filename}" if e.sass_filename 808: raise "Error on line #{e.sass_line}#{file}: #{e.message}\n Use --trace for backtrace" 809: rescue LoadError => err 810: handle_load_error(err) 811: end
# File lib/haml/exec.rb, line 814 814: def try_less_note 815: return if @@less_note_printed 816: @@less_note_printed = true 817: warn "* NOTE: Sass and Less are different languages, and they work differently.\n* I'll do my best to translate, but some features -- especially mixins --\n* should be checked by hand.\n" 818: end