Class: Rack::Relativize

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/relativize/version.rb,
lib/rack/relativize.rb

Constant Summary collapse

VERSION = 
"0.0.1"

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Relativize 



6
7
8
 
# File 'lib/rack/relativize.rb', line 6

def initialize(app)
  @app        = app
end

Instance Method Details

#call(env) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
 
# File 'lib/rack/relativize.rb', line 10

def call(env)
  status, headers, enumerable_body = original_response = @app.call(env.dup)

  if headers["Content-Type"].to_s.match(/(ht|x)ml/) # FIXME: Use another pattern
    type = :html
  elsif headers["Content-Type"].to_s.match(/css/)
    type = :css
  else
    return original_response
  end

  path    = env['PATH_INFO']
  raise  "PATH_INFO is Empty" if path == ""

  content = join_body(enumerable_body)

  case type
  when :html
    processed_body = content.gsub(/(<[^>]+\s+(src|href))=(['"]?)(\/.*?)\3([ >])/) do
      $1 + '=' + $3 + relative_path_to(path, $4) + $3 + $5
    end
  when :css
    processed_body = content.gsub(/url\((['"]?)(\/.*?)\1\)/) do
      'url(' + $1 + relative_path_to(path, $2) + $1 + ')'
    end
  else
    raise RuntimeError.new(
      "The relativize_paths needs to know the type of content to " +
        "process. Pass :type => :html for HTML or :type => :css for CSS."
    )
  end
  processed_headers = headers.merge({
      "Content-Length" => processed_body.size.to_s
    })
  [status, processed_headers, [processed_body]]
end