`Utils`, we didn't know where else to put it!
Define UTF-8 BOM pattern matcher. Avoid using a Regexp literal because it inheirts the files encoding and we want to avoid syntax errors in other interpreters.
Prepends a leading “.” to an extension if its missing.
normalize_extension("js") # => ".js" normalize_extension(".css") # => ".css"
# File lib/sprockets/utils.rb, line 60 def self.normalize_extension(extension) extension = extension.to_s if extension[/^\./] extension else ".#{extension}" end end
# File lib/sprockets/utils.rb, line 11 def self.read_unicode(pathname, external_encoding = Encoding.default_external) pathname.open("r:#{external_encoding}") do |f| f.read.tap do |data| # Eager validate the file's encoding. In most cases we # expect it to be UTF-8 unless `default_external` is set to # something else. An error is usually raised if the file is # saved as UTF-16 when we expected UTF-8. if !data.valid_encoding? raise EncodingError, "#{pathname} has a invalid " + "#{data.encoding} byte sequence" # If the file is UTF-8 and theres a BOM, strip it for safe concatenation. elsif data.encoding.name == "UTF-8" && data =~ UTF8_BOM_PATTERN data.sub!(UTF8_BOM_PATTERN, "") end end end end