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Contents
require 'tilt'
module Sprockets
# Some browsers have issues with stylesheets that contain multiple
# `@charset` definitions. The issue surfaces while using Sass since
# it inserts a `@charset` at the top of each file. Then Sprockets
# concatenates them together.
#
# The `CharsetNormalizer` processor strips out multiple `@charset`
# definitions.
#
# The current implementation is naive. It picks the first `@charset`
# it sees and strips the others. This works for most people because
# the other definitions are usually `UTF-8`. A more sophisticated
# approach would be to re-encode stylesheets with mixed encodings.
#
# This behavior can be disabled with:
#
# environment.unregister_bundle_processor 'text/css', Sprockets::CharsetNormalizer
#
class CharsetNormalizer < Tilt::Template
def prepare
end
def evaluate(context, locals, &block)
charset = nil
# Find and strip out any `@charset` definitions
filtered_data = data.gsub(/^@charset "([^"]+)";$/) {
charset ||= $1; ""
}
if charset
# If there was a charset, move it to the top
"@charset \"#{charset}\";#{filtered_data}"
else
data
end
end
end
end
Version data entries
157 entries across 132 versions & 22 rubygems