77 lines
No EOL
2 KiB
Ruby
Executable file
77 lines
No EOL
2 KiB
Ruby
Executable file
# Extension namespace
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module Middleman::Extensions
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# Minify Javascript Extension
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module MinifyJavascript
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# Setup extension
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class << self
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# Once registered
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def registered(app)
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# Once config is parsed
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app.after_configuration do
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# Tell sprockets which compressor to use
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if !js_compressor
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require 'uglifier'
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set :js_compressor, ::Uglifier.new
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end
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# Setup Rack to watch for inline JS
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use InlineJavascriptRack, :compressor => js_compressor
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end
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end
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alias :included :registered
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end
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# Rack middleware to look for JS in HTML and compress it
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class InlineJavascriptRack
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# Init
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# @param [Class] app
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# @param [Hash] options
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def initialize(app, options={})
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@app = app
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@compressor = options[:compressor]
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end
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# Rack interface
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# @param [Rack::Environmemt] env
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# @return [Array]
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def call(env)
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status, headers, response = @app.call(env)
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if env["PATH_INFO"].match(/\.html$/)
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uncompressed_source = case(response)
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when String
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response
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when Array
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response.join
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when Rack::Response
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response.body.join
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when Rack::File
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File.read(response.path)
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end
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minified = uncompressed_source.gsub(/(<scri.*?\/\/<!\[CDATA\[\n)(.*?)(\/\/\]\].*?<\/script>)/m) do |m|
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first = $1
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uncompressed_source = $2
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last = $3
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minified_js = @compressor.compress(uncompressed_source)
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first << minified_js << "\n" << last
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end
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headers["Content-Length"] = ::Rack::Utils.bytesize(minified).to_s
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response = [minified]
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end
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[status, headers, response]
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end
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end
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end
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# Register extension
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# register :minify_javascript, MinifyJavascript
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end |