Class: Middleman::Extensions::MinifyCss::Rack

Inherits:
Object
  • Object
show all
Defined in:
lib/middleman-more/extensions/minify_css.rb

Overview

Rack middleware to look for CSS and compress it

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Rack

Init

Parameters:

  • app (Class)
  • options (Hash) (defaults to: {}) 


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# File 'lib/middleman-more/extensions/minify_css.rb', line 39

def initialize(app, options={})
  @app = app
  @compressor = options[:compressor]
  @ignore = options[:ignore]
  @inline = options[:inline]
end

Instance Method Details

#call(env) ⇒ Array

Rack interface

Parameters:

  • env (Rack::Environmemt)

Returns:

  • (Array) 


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# File 'lib/middleman-more/extensions/minify_css.rb', line 49

def call(env)
  status, headers, response = @app.call(env)

  path = env["PATH_INFO"]

  if (path.end_with?('.html') || path.end_with?('.php')) && @inline
    uncompressed_source = ::Middleman::Util.extract_response_text(response)

    minified = uncompressed_source.gsub(/(<style[^>]*>\s*(?:\/\*<!\[CDATA\[\*\/\n)?)(.*?)((?:(?:\n\s*)?\/\*\]\]>\*\/)?\s*<\/style>)/m) do |match|
      first = $1
      css = $2
      last = $3

      minified_css = @compressor.compress(css)

      first << minified_css << last
    end

    headers["Content-Length"] = ::Rack::Utils.bytesize(minified).to_s
    response = [minified]
  elsif path.end_with?('.css') && @ignore.none? {|ignore| Middleman::Util.path_match(ignore, path) }
    uncompressed_source = ::Middleman::Util.extract_response_text(response)
    minified_css = @compressor.compress(uncompressed_source)

    headers["Content-Length"] = ::Rack::Utils.bytesize(minified_css).to_s
    response = [minified_css]
  end

  [status, headers, response]
end