Class: Sprockets::AssetAttributes

Inherits:
Object
  • Object
show all
Defined in:
lib/sprockets/asset_attributes.rb

Overview

‘AssetAttributes` is a wrapper similar to `Pathname` that provides some helper accessors.

These methods should be considered internalish.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(environment, path) ⇒ AssetAttributes

Returns a new instance of AssetAttributes.



11
12
13
14
 
# File 'lib/sprockets/asset_attributes.rb', line 11

def initialize(environment, path)
  @environment = environment
  @pathname = path.is_a?(Pathname) ? path : Pathname.new(path.to_s)
end

Instance Attribute Details

#environment ⇒ Object (readonly)

Returns the value of attribute environment.



9
10
11
 
# File 'lib/sprockets/asset_attributes.rb', line 9

def environment
  @environment
end

#pathname ⇒ Object (readonly)

Returns the value of attribute pathname.



9
10
11
 
# File 'lib/sprockets/asset_attributes.rb', line 9

def pathname
  @pathname
end

Instance Method Details

#content_type ⇒ Object

Returns the content type for the pathname. Falls back to ‘application/octet-stream`.



104
105
106
107
108
109
110
111
112
113
114
 
# File 'lib/sprockets/asset_attributes.rb', line 104

def content_type
  @content_type ||= begin
    if format_extension.nil?
      engine_content_type || 'application/octet-stream'
    else
      @environment.mime_types(format_extension) ||
        engine_content_type ||
        'application/octet-stream'
    end
  end
end

#engine_extensions ⇒ Object

Returns an ‘Array` of engine extensions.

"foo.js.coffee.erb"
# => [".coffee", ".erb"]



81
82
83
84
85
86
87
88
89
 
# File 'lib/sprockets/asset_attributes.rb', line 81

def engine_extensions
  exts = extensions

  if offset = extensions.index(format_extension)
    exts = extensions[offset+1..-1]
  end

  exts.select { |ext| @environment.engines(ext) }
end

#engines ⇒ Object

Returns engine classes.



92
93
94
 
# File 'lib/sprockets/asset_attributes.rb', line 92

def engines
  engine_extensions.map { |ext| @environment.engines(ext) }
end

#extensions ⇒ Object

Returns ‘Array` of extension `String`s.

"foo.js.coffee"
# => [".js", ".coffee"]



61
62
63
 
# File 'lib/sprockets/asset_attributes.rb', line 61

def extensions
  @extensions ||= @pathname.basename.to_s.scan(/\.[^.]+/)
end

#format_extension ⇒ Object

Returns the format extension.

"foo.js.coffee"
# => ".js"



70
71
72
73
74
 
# File 'lib/sprockets/asset_attributes.rb', line 70

def format_extension
  extensions.reverse.detect { |ext|
    @environment.mime_types(ext) && !@environment.engines(ext)
  }
end

#logical_path ⇒ Object

Reverse guess logical path for fully expanded path.

This has some known issues. For an example if a file is shaddowed in the path, but is required relatively, its logical path will be incorrect.



44
45
46
47
48
49
50
51
52
53
54
 
# File 'lib/sprockets/asset_attributes.rb', line 44

def logical_path
  if root_path = environment.paths.detect { |path| pathname.to_s[path] }
    path = pathname.to_s.sub("#{root_path}/", '')
    path = pathname.relative_path_from(Pathname.new(root_path)).to_s
    path = engine_extensions.inject(path) { |p, ext| p.sub(ext, '') }
    path = "#{path}#{engine_format_extension}" unless format_extension
    path
  else
    raise FileOutsidePaths, "#{pathname} isn't in paths: #{environment.paths.join(', ')}"
  end
end

#processors ⇒ Object

Returns all processors to run on the path.



97
98
99
100
101
 
# File 'lib/sprockets/asset_attributes.rb', line 97

def processors
  environment.preprocessors(content_type) +
    engines.reverse +
    environment.postprocessors(content_type)
end

#search_paths ⇒ Object

Returns paths search the load path for.



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/sprockets/asset_attributes.rb', line 17

def search_paths
  paths = [pathname.to_s]

  extension = format_extension
  path_without_extension = extension ?
    pathname.sub(extension, '') :
    pathname

  # optimization: bower.json can only be nested one level deep
  if !path_without_extension.to_s.index('/')
    paths << path_without_extension.join("bower.json").to_s
    # DEPRECATED bower configuration file
    paths << path_without_extension.join("component.json").to_s
  end

  if pathname.basename(extension.to_s).to_s != 'index'
    paths << path_without_extension.join("index#{extension}").to_s
  end

  paths
end