110 lines
3.2 KiB
Ruby
110 lines
3.2 KiB
Ruby
require 'sass'
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module Middleman
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module Renderers
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# Sass renderer
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class Sass < ::Middleman::Extension
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opts = { output_style: :nested }
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opts[:line_comments] = false if ENV['TEST']
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define_setting :sass, opts, 'Sass engine options'
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define_setting :sass_assets_paths, [], 'Paths to extra SASS/SCSS files'
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define_setting :sass_source_maps, nil, 'Whether to inline sourcemap into Sass'
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# Setup extension
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def initialize(app, options={}, &block)
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super
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logger.info '== Preferring use of LibSass' if defined?(::SassC)
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app.files.ignore :sass_cache, :source, /(^|\/)\.sass-cache\//
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# Tell Tilt to use it as well (for inline sass blocks)
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::Tilt.register 'sass', SassPlusCSSFilenameTemplate
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::Tilt.prefer(SassPlusCSSFilenameTemplate)
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# Tell Tilt to use it as well (for inline scss blocks)
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::Tilt.register 'scss', ScssPlusCSSFilenameTemplate
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::Tilt.prefer(ScssPlusCSSFilenameTemplate)
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require 'middleman-core/renderers/sass_functions'
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end
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# A SassTemplate for Tilt which outputs debug messages
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class SassPlusCSSFilenameTemplate < ::Tilt::SassTemplate
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def initialize(*args, &block)
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super
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@context = @options[:context] if @options.key?(:context)
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end
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# Define the expected syntax for the template
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# @return [Symbol]
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def syntax
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:sass
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end
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def prepare; end
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# Add exception messaging
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# @param [Class] context
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# @return [String]
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def evaluate(context, _)
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@context ||= context
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sass_module = if defined?(::SassC)
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::SassC
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else
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::Sass
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end
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@engine = sass_module::Engine.new(data, sass_options)
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begin
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@engine.render
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rescue sass_module::SyntaxError => e
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::Sass::SyntaxError.exception_to_css(e)
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end
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end
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# Change Sass path, for url functions, to the build folder if we're building
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# @return [Hash]
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def sass_options
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ctx = @context
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more_opts = {
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load_paths: ::Sass.load_paths | ctx.app.config[:sass_assets_paths],
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filename: eval_file,
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line: line,
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syntax: syntax,
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custom: (options[:custom] || {}).merge(
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middleman_context: ctx.app,
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current_resource: ctx.current_resource
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)
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}
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if ctx.app.config[:sass_source_maps] || (ctx.app.config[:sass_source_maps].nil? && ctx.app.development?)
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more_opts[:source_map_file] = '.'
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more_opts[:source_map_embed] = true
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more_opts[:source_map_contents] = true
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end
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if ctx.is_a?(::Middleman::TemplateContext) && file
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more_opts[:css_filename] = file.sub(/\.s[ac]ss$/, '')
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end
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options.merge(more_opts)
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end
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end
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# SCSS version of the above template
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class ScssPlusCSSFilenameTemplate < SassPlusCSSFilenameTemplate
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# Define the expected syntax for the template
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# @return [Symbol]
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def syntax
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:scss
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end
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end
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end
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end
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end
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