Class: Middleman::Extensions::AssetHash::Middleware

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

Overview

The asset hash middleware is responsible for rewriting references to assets to include their new, hashed name.

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/middleman-more/extensions/asset_hash.rb', line 57

def initialize(app, options={})
  @rack_app        = app
  @exts            = options[:exts]
  @ignore          = options[:ignore]
  @exts_regex_text = @exts.map {|e| Regexp.escape(e) }.join('|')
  @middleman_app   = options[:middleman_app]
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/middleman-more/extensions/asset_hash.rb', line 65

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

  # We don't want to use this middleware when rendering files to figure out their hash!
  return [status, headers, response] if env["bypass_asset_hash"]

  path = @middleman_app.full_path(env["PATH_INFO"])
  dirpath = Pathname.new(File.dirname(path))

  if path =~ /(^\/$)|(\.(htm|html|php|css|js)$)/
    body = ::Middleman::Util.extract_response_text(response)

    if body
      # TODO: This regex will change some paths in plan HTML (not in a tag) - is that OK?
      body.gsub! /([=\'\"\(]\s*)([^\s\'\"\)]+(#{@exts_regex_text}))/ do |match|
        opening_character = $1
        asset_path = $2

        relative_path = Pathname.new(asset_path).relative?

        asset_path = dirpath.join(asset_path).to_s if relative_path

        if @ignore.any? { |r| asset_path.match(r) }
          match
        elsif asset_page = @middleman_app.sitemap.find_resource_by_path(asset_path)
          replacement_path = "/#{asset_page.destination_path}"
          replacement_path = Pathname.new(replacement_path).relative_path_from(dirpath).to_s if relative_path

          "#{opening_character}#{replacement_path}"
        else
          match
        end
      end

      status, headers, response = Rack::Response.new(body, status, headers).finish
    end
  end
  [status, headers, response]
end