module Sprockets::Processing

def add_engine_to_trail(ext, klass) 

def add_engine_to_trail(ext, klass)
  @trail.append_extension(ext.to_s)
  if klass.respond_to?(:default_mime_type) && klass.default_mime_type
    if format_ext = extension_for_mime_type(klass.default_mime_type)
      @trail.alias_extension(ext.to_s, format_ext)
    end
  end
end

def bundle_processors(mime_type = nil)

recommended to subclass `Tilt::Template`.
All `Processor`s must follow the `Tilt::Template` interface. It is

individual files.
Bundle Processors are ran on concatenated assets rather than

extension will be returned.
argument is supplied, the processors registered under that
Returns an `Array` of `Processor` classes. If a `mime_type` 
def bundle_processors(mime_type = nil)
  if mime_type
    @bundle_processors[mime_type].dup
  else
    deep_copy_hash(@bundle_processors)
  end
end

def format_extensions


# => ['.js', '.css']
format_extensions

Returns an `Array` of format extension `String`s. 
def format_extensions
  @trail.extensions - @engines.keys
end

def postprocessors(mime_type = nil)

recommended to subclass `Tilt::Template`.
All `Processor`s must follow the `Tilt::Template` interface. It is

Postprocessors are ran after Preprocessors and Engine processors.

extension will be returned.
argument is supplied, the processors registered under that
Returns an `Array` of `Processor` classes. If a `mime_type` 
def postprocessors(mime_type = nil)
  if mime_type
    @postprocessors[mime_type].dup
  else
    deep_copy_hash(@postprocessors)
  end
end

def preprocessors(mime_type = nil)

recommended to subclass `Tilt::Template`.
All `Processor`s must follow the `Tilt::Template` interface. It is

processors.
Preprocessors are ran before Postprocessors and Engine

extension will be returned.
argument is supplied, the processors registered under that
Returns an `Array` of `Processor` classes. If a `mime_type` 
def preprocessors(mime_type = nil)
  if mime_type
    @preprocessors[mime_type].dup
  else
    deep_copy_hash(@preprocessors)
  end
end

def processors(*args)

Deprecated alias for `preprocessors`. 
def processors(*args)
  preprocessors(*args)
end

def register_bundle_processor(mime_type, klass, &block)


end
data.gsub(...)
register_bundle_processor :my_processor do |context, data|

A block can be passed for to create a shorthand processor.

register_bundle_processor 'text/css', Sprockets::CharsetNormalizer

Registers a new Bundle Processor `klass` for `mime_type`. 
def register_bundle_processor(mime_type, klass, &block)
  if block_given?
    name  = klass.to_s
    klass = Class.new(Processor) do
      @name      = name
      @processor = block
    end
  end
  @bundle_processors[mime_type].push(klass)
end

def register_postprocessor(mime_type, klass, &block)


end
data.gsub(...)
register_postprocessor 'text/css', :my_processor do |context, data|

A block can be passed for to create a shorthand processor.

register_postprocessor 'text/css', Sprockets::CharsetNormalizer

Registers a new Postprocessor `klass` for `mime_type`. 
def register_postprocessor(mime_type, klass, &block)
  if block_given?
    name  = klass.to_s
    klass = Class.new(Processor) do
      @name      = name
      @processor = block
    end
  end
  @postprocessors[mime_type].push(klass)
end

def register_preprocessor(mime_type, klass, &block)


end
data.gsub(...)
register_preprocessor 'text/css', :my_processor do |context, data|

A block can be passed for to create a shorthand processor.

register_preprocessor 'text/css', Sprockets::DirectiveProcessor

Registers a new Preprocessor `klass` for `mime_type`. 
def register_preprocessor(mime_type, klass, &block)
  if block_given?
    name  = klass.to_s
    klass = Class.new(Processor) do
      @name      = name
      @processor = block
    end
  end
  @preprocessors[mime_type].push(klass)
end

def register_processor(*args, &block)

Deprecated alias for `register_preprocessor`. 
def register_processor(*args, &block)
  register_preprocessor(*args, &block)
end

def unregister_bundle_processor(mime_type, klass)


unregister_bundle_processor 'text/css', Sprockets::CharsetNormalizer

Remove Bundle Processor `klass` for `mime_type`. 
def unregister_bundle_processor(mime_type, klass)
  if klass.is_a?(String) || klass.is_a?(Symbol)
    klass = @bundle_processors[mime_type].detect { |cls|
      cls.respond_to?(:name) &&
        cls.name == "Sprockets::Processor (#{klass})"
    }
  end
  @bundle_processors[mime_type].delete(klass)
end

def unregister_postprocessor(mime_type, klass)


unregister_postprocessor 'text/css', Sprockets::DirectiveProcessor

Remove Postprocessor `klass` for `mime_type`. 
def unregister_postprocessor(mime_type, klass)
  if klass.is_a?(String) || klass.is_a?(Symbol)
    klass = @postprocessors[mime_type].detect { |cls|
      cls.respond_to?(:name) &&
        cls.name == "Sprockets::Processor (#{klass})"
    }
  end
  @postprocessors[mime_type].delete(klass)
end

def unregister_preprocessor(mime_type, klass)


unregister_preprocessor 'text/css', Sprockets::DirectiveProcessor

Remove Preprocessor `klass` for `mime_type`. 
def unregister_preprocessor(mime_type, klass)
  if klass.is_a?(String) || klass.is_a?(Symbol)
    klass = @preprocessors[mime_type].detect { |cls|
      cls.respond_to?(:name) &&
        cls.name == "Sprockets::Processor (#{klass})"
    }
  end
  @preprocessors[mime_type].delete(klass)
end

def unregister_processor(*args)

Deprecated alias for `unregister_preprocessor`. 
def unregister_processor(*args)
  unregister_preprocessor(*args)
end