class Sass::CSS

This class converts CSS documents into Sass or SCSS templates. It works by parsing the CSS document into a {Sass::Tree} structure, and then applying various transformations to the structure to produce more concise and idiomatic Sass/SCSS.

Example usage:

Sass::CSS.new("p { color: blue }").render(:sass) #=> "p\n  color: blue"
Sass::CSS.new("p { color: blue }").render(:scss) #=> "p {\n  color: blue; }"

Public Class Methods

new(template, options = {}) click to toggle source

@param template [String] The CSS stylesheet.

This stylesheet can be encoded using any encoding
that can be converted to Unicode.
If the stylesheet contains an `@charset` declaration,
that overrides the Ruby encoding
(see {file:SASS_REFERENCE.md#encodings the encoding documentation})

@option options :old [Boolean] (false)

Whether or not to output old property syntax
(`:color blue` as opposed to `color: blue`).
This is only meaningful when generating Sass code,
rather than SCSS.
# File lib/sass/css.rb, line 27
def initialize(template, options = {})
  if template.is_a? IO
    template = template.read
  end

  @options = options.dup
  # Backwards compatibility
  @options[:old] = true if @options[:alternate] == false
  @template = template
end

Public Instance Methods

render(fmt = :sass) click to toggle source

Converts the CSS template into Sass or SCSS code.

@param fmt [Symbol] `:sass` or `:scss`, designating the format to return. @return [String] The resulting Sass or SCSS code @raise [Sass::SyntaxError] if there's an error parsing the CSS template

# File lib/sass/css.rb, line 43
def render(fmt = :sass)
  check_encoding!
  build_tree.send("to_#{fmt}", @options).strip + "\n"
rescue Sass::SyntaxError => err
  err.modify_backtrace(:filename => @options[:filename] || '(css)')
  raise err
end
source_encoding() click to toggle source

Returns the original encoding of the document, or `nil` under Ruby 1.8.

@return [Encoding, nil] @raise [Encoding::UndefinedConversionError] if the source encoding

cannot be converted to UTF-8

@raise [ArgumentError] if the document uses an unknown encoding with `@charset`

# File lib/sass/css.rb, line 58
def source_encoding
  check_encoding!
  @original_encoding
end