Class: Middleman::Middleware::InlineURLRewriter

Inherits:
Object
  • Object
show all
Includes:
Contracts
Defined in:
lib/middleman-core/middleware/inline_url_rewriter.rb

Constant Summary collapse

IGNORE_DESCRIPTOR = 
Or[Regexp, RespondTo[:call], String]

Constants included from Contracts

Contracts::PATH_MATCHER

Instance Method Summary collapse

Methods included from Contracts

#Contract

Constructor Details

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

Returns a new instance of InlineURLRewriter.



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# File 'lib/middleman-core/middleware/inline_url_rewriter.rb', line 22

def initialize(app, options={})
  @rack_app = app
  @middleman_app = options.fetch(:middleman_app)

  @uid = options.fetch(:id, nil)
  @proc = options.fetch(:proc)

  raise 'InlineURLRewriter requires a :proc to call with inline URL results' unless @proc

  @exts = options.fetch(:url_extensions)

  @source_exts = options.fetch(:source_extensions)
  @source_exts_regex_text = Regexp.union(@source_exts).to_s

  @ignore = options.fetch(:ignore)
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/middleman-core/middleware/inline_url_rewriter.rb', line 39

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

  # Allow upstream request to skip all rewriting
  return [status, headers, response] if env['bypass_inline_url_rewriter'] == 'true'

  # Allow upstream request to skip this specific rewriting
  if @uid
    uid_key = "bypass_inline_url_rewriter_#{@uid}"
    return [status, headers, response] if env[uid_key] == 'true'
  end

  path = ::Middleman::Util.full_path(env['PATH_INFO'], @middleman_app)

  if path =~ /(^\/$)|(#{@source_exts_regex_text}$)/
    if body = ::Middleman::Util.extract_response_text(response)

      dirpath = Pathname.new(File.dirname(path))

      rewritten = ::Middleman::Util.rewrite_paths(body, path, @exts) do |asset_path|
        uri = ::Addressable::URI.parse(asset_path)

        relative_path = uri.host.nil?

        full_asset_path = if relative_path
          dirpath.join(asset_path).to_s
        else
          asset_path
        end

        @ignore.none? { |r| should_ignore?(r, full_asset_path) } && @proc.call(asset_path, dirpath, path)
      end

      status, headers, response = ::Rack::Response.new(
        rewritten,
        status,
        headers
      ).finish
    end
  end

  [status, headers, response]
end

#should_ignore?(validator, value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/middleman-core/middleware/inline_url_rewriter.rb', line 84

def should_ignore?(validator, value)
  if validator.is_a? Regexp
    # Treat as Regexp
    !value.match(validator).nil?
  elsif validator.respond_to? :call
    # Treat as proc
    validator.call(value)
  elsif validator.is_a? String
    # Treat as glob
    File.fnmatch(value, validator)
  else
    # If some unknown thing, don't ignore
    false
  end
end