61 lines
1.8 KiB
Ruby
61 lines
1.8 KiB
Ruby
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module Sass
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module Plugin
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# Rack middleware for compiling Sass code.
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#
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# ## Activate
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#
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# require 'sass/plugin/rack'
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# use Sass::Plugin::Rack
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#
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# ## Customize
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#
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# Sass::Plugin.options.merge!(
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# :cache_location => './tmp/sass-cache',
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# :never_update => environment != :production,
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# :full_exception => environment != :production)
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#
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# {file:SASS_REFERENCE.md#Options See the Reference for more options}.
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#
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# ## Use
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#
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# Put your Sass files in `public/stylesheets/sass`.
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# Your CSS will be generated in `public/stylesheets`,
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# and regenerated every request if necessary.
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# The locations and frequency {file:SASS_REFERENCE.md#Options can be customized}.
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# That's all there is to it!
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class Rack
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# The delay, in seconds, between update checks.
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# Useful when many resources are requested for a single page.
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# `nil` means no delay at all.
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#
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# @return [Float]
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attr_accessor :dwell
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# Initialize the middleware.
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#
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# @param app [#call] The Rack application
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# @param dwell [Float] See \{#dwell}
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def initialize(app, dwell = 1.0)
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@app = app
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@dwell = dwell
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@check_after = Time.now.to_f
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end
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# Process a request, checking the Sass stylesheets for changes
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# and updating them if necessary.
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#
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# @param env The Rack request environment
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# @return [(#to_i, {String => String}, Object)] The Rack response
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def call(env)
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if @dwell.nil? || Time.now.to_f > @check_after
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Sass::Plugin.check_for_updates
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@check_after = Time.now.to_f + @dwell if @dwell
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end
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@app.call(env)
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end
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end
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end
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end
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require 'sass/plugin'
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