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require 'active_support/deprecation/reporting'
require 'sass'
require 'sprockets/sass_importer'
require 'tilt'
module Sass
module Rails
class SassImporter < Sass::Importers::Filesystem
module Globbing
GLOB = /(\A|\/)(\*|\*\*\/\*)\z/
def find_relative(name, base, options)
if options[:sprockets] && m = name.match(GLOB)
path = name.sub(m[0], "")
base = File.expand_path(path, File.dirname(base))
glob_imports(base, m[2], options)
else
super
end
end
def find(name, options)
# globs must be relative
return if name =~ GLOB
super
end
private
def glob_imports(base, glob, options)
contents = ""
context = options[:sprockets][:context]
each_globbed_file(base, glob, context) do |filename|
next if filename == options[:filename]
contents << "@import #{filename.inspect};\n"
end
return nil if contents == ""
Sass::Engine.new(contents, options.merge(
:filename => base,
:importer => self,
:syntax => :scss
))
end
def each_globbed_file(base, glob, context)
raise ArgumentError unless glob == "*" || glob == "**/*"
exts = extensions.keys.map { |ext| Regexp.escape(".#{ext}") }.join("|")
sass_re = Regexp.compile("(#{exts})$")
context.depend_on(base)
Dir["#{base}/#{glob}"].sort.each do |path|
if File.directory?(path)
context.depend_on(path)
elsif sass_re =~ path
yield path
end
end
end
end
module ERB
def extensions
{
'css.erb' => :scss_erb,
'scss.erb' => :scss_erb,
'sass.erb' => :sass_erb
}.merge(super)
end
def erb_extensions
{
:scss_erb => :scss,
:sass_erb => :sass
}
end
def find_relative(*args)
process_erb_engine(super)
end
def find(*args)
process_erb_engine(super)
end
private
def process_erb_engine(engine)
if engine && engine.options[:sprockets] && syntax = erb_extensions[engine.options[:syntax]]
template = Tilt::ERBTemplate.new(engine.options[:filename])
contents = template.render(engine.options[:sprockets][:context], {})
Sass::Engine.new(contents, engine.options.merge(:syntax => syntax))
else
engine
end
end
end
module Deprecated
def extensions
{
'css.scss' => :scss,
'css.sass' => :sass,
'css.scss.erb' => :scss_erb,
'css.sass.erb' => :sass_erb
}.merge(super)
end
def find_relative(*args)
deprecate_extra_css_extension(super)
end
def find(*args)
deprecate_extra_css_extension(super)
end
private
def deprecate_extra_css_extension(engine)
if engine && filename = engine.options[:filename]
if filename.end_with?('.css.scss')
msg = "Extra .css in SCSS file is unnecessary. Rename #{filename} to #{filename.sub('.css.scss', '.scss')}."
elsif filename.end_with?('.css.sass')
msg = "Extra .css in SASS file is unnecessary. Rename #{filename} to #{filename.sub('.css.sass', '.sass')}."
elsif filename.end_with?('.css.scss.erb')
msg = "Extra .css in SCSS/ERB file is unnecessary. Rename #{filename} to #{filename.sub('.css.scss.erb', '.scss.erb')}."
elsif filename.end_with?('.css.sass.erb')
msg = "Extra .css in SASS/ERB file is unnecessary. Rename #{filename} to #{filename.sub('.css.sass.erb', '.sass.erb')}."
end
ActiveSupport::Deprecation.warn(msg) if msg
end
engine
end
end
include Deprecated
include ERB
include Globbing
# Allow .css files to be @import'd
def extensions
{ 'css' => :scss }.merge(super)
end
end
end
end
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