139 lines
4.1 KiB
Ruby
139 lines
4.1 KiB
Ruby
# This custom importer is used for site customizations. This is similar to the
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# Sprockets::SassImporter implementation provided in sass-rails since that is used
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# during asset precompilation.
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class DiscourseSassImporter < Sass::Importers::Filesystem
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GLOB = /\*|\[.+\]/
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# Depending upon where this is passed we might either be passed a string as the
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# first argument or a sprockets context. If the first argument is a sprockets
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# context we store it and use it to mark dependencies.
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def initialize(*args)
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@context = args.first unless args.first.is_a? String
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@root = Rails.root.join('app', 'assets', 'stylesheets').to_s
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@same_name_warnings = Set.new
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end
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def extensions
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{
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'css' => :scss,
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'css.scss' => :scss,
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'css.sass' => :sass,
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'css.erb' => :scss,
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'scss.erb' => :scss,
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'sass.erb' => :sass,
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'css.scss.erb' => :scss,
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'css.sass.erb' => :sass
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}.merge!(super)
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end
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def special_imports
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{
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"plugins" => DiscoursePluginRegistry.stylesheets,
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"plugins_mobile" => DiscoursePluginRegistry.mobile_stylesheets,
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"plugins_desktop" => DiscoursePluginRegistry.desktop_stylesheets,
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"plugins_variables" => DiscoursePluginRegistry.sass_variables,
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"theme_variables" => [ColorScheme::BASE_COLORS_FILE]
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}
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end
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def find_relative(name, base, options)
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if name =~ GLOB
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glob_imports(name, Pathname.new(base), options)
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else
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engine_from_path(name, File.dirname(base), options)
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end
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end
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def find(name, options)
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if special_imports.has_key? name
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if name == "theme_variables"
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contents = ""
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if color_scheme = ColorScheme.enabled
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ColorScheme.base_colors.each do |name, base_hex|
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override = color_scheme.colors_by_name[name]
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contents << "$#{name}: ##{override ? override.hex : base_hex} !default;\n"
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end
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else
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special_imports[name].each do |css_file|
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contents << File.read(css_file)
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end
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end
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Sass::Engine.new(contents, options.merge(
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filename: "#{name}.scss",
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importer: self,
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syntax: :scss
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))
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else
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stylesheets = special_imports[name]
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contents = ""
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stylesheets.each do |css_file|
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if css_file =~ /\.scss$/
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contents << "@import '#{css_file}';"
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else
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contents << File.read(css_file)
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end
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depend_on(css_file)
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end
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Sass::Engine.new(contents, options.merge(
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filename: "#{name}.scss",
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importer: self,
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syntax: :scss
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))
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end
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elsif name =~ GLOB
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nil # globs must be relative
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else
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engine_from_path(name, root, options)
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end
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end
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def each_globbed_file(glob, base_pathname, options)
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Dir["#{base_pathname}/#{glob}"].sort.each do |filename|
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next if filename == options[:filename]
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yield filename # assume all matching files are requirable
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end
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end
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def glob_imports(glob, base_pathname, options)
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contents = ""
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each_globbed_file(glob, base_pathname.dirname, options) do |filename|
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depend_on(filename)
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unless File.directory?(filename)
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contents << "@import #{Pathname.new(filename).relative_path_from(base_pathname.dirname).to_s.inspect};\n"
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end
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end
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return nil if contents.empty?
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Sass::Engine.new(contents, options.merge(
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filename: base_pathname.to_s,
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importer: self,
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syntax: :scss
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))
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end
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private
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def depend_on(filename)
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if @context
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@context.depend_on(filename)
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@context.depend_on(globbed_file_parent(filename))
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end
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end
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def globbed_file_parent(filename)
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if File.directory?(filename)
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File.expand_path('..', filename)
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else
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File.dirname(filename)
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end
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end
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def engine_from_path(name, dir, options)
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full_filename, syntax = Sass::Util.destructure(find_real_file(dir, name, options))
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return unless full_filename && File.readable?(full_filename)
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depend_on(full_filename)
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Sass::Engine.for_file(full_filename, options)
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end
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end
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