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system-wide css compression using Sprockets and CSSMin. fixes #102

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This commit is contained in:
Thomas Reynolds 2011-10-19 16:59:30 -07:00
parent 6ae709fa83
commit 61744661ff
3 changed files with 62 additions and 5 deletions
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7
lib/middleman/core_extensions/sprockets.rb
View file

@ -6,6 +6,7 @@ module Middleman::CoreExtensions::Sprockets
class << self
def registered(app)
app.set :js_compressor, false
app.set :css_compressor, false
# Cut off every extension after .js (which sprockets eats up)
app.build_reroute do |destination, request_path|
@ -78,7 +79,7 @@ module Middleman::CoreExtensions::Sprockets
super
# Disable css
unregister_processor "text/css", ::Sprockets::DirectiveProcessor
# unregister_processor "text/css", ::Sprockets::DirectiveProcessor
self.js_compressor = app.settings.js_compressor
@ -97,7 +98,9 @@ module Middleman::CoreExtensions::Sprockets
super
# Disable js
unregister_processor "application/javascript", ::Sprockets::DirectiveProcessor
# unregister_processor "application/javascript", ::Sprockets::DirectiveProcessor
self.css_compressor = app.settings.css_compressor
# configure search paths
append_path app.css_dir

5
lib/middleman/features/minify_css.rb
View file

@ -1,9 +1,8 @@
module Middleman::Features::MinifyCss
class << self
def registered(app)
app.compass_config do |config|
config.output_style = :compressed
end
require "middleman/features/minify_css/cssmin"
app.set :css_compressor, ::CSSMin
end
alias :included :registered
end

55
lib/middleman/features/minify_css/cssmin.rb Normal file
View file

@ -0,0 +1,55 @@
#--
# Copyright (c) 2008 Ryan Grove <ryan@wonko.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * Neither the name of this project nor the names of its contributors may be
# used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#++
module CSSMin
def self.compress(input)
css = input.is_a?(IO) ? input.read : input.dup.to_s
css.gsub!(/\/\*[\s\S]*?\*\//, '')
css.gsub!(/\s+/, ' ')
css.gsub!(/"\\"\}\\""/, '___BMH___')
css.gsub!(/(?:^|\})[^\{:]+\s+:+[^\{]*\{/) do |match|
match.gsub(':', '___PSEUDOCLASSCOLON___')
end
css.gsub!(/\s+([!\{\};:>+\(\)\],])/, '\1')
css.gsub!('___PSEUDOCLASSCOLON___', ':')
css.gsub!(/([!\{\}:;>+\(\[,])\s+/, '\1')
css.gsub!(/([^;\}])\}/, '\1;}')
css.gsub!(/([\s:])([+-]?0)(?:%|em|ex|px|in|cm|mm|pt|pc)/i, '\1\2')
css.gsub!(/:(?:0 )+0;/, ':0;')
css.gsub!('background-position:0;', 'background-position:0 0;')
css.gsub!(/(:|\s)0+\.(\d+)/, '\1.\2')
css.gsub!(/rgb\s*\(\s*([0-9,\s]+)\s*\)/) do |match|
'#' << $1.scan(/\d+/).map{|n| n.to_i.to_s(16).rjust(2, '0') }.join
end
css.gsub!(/([^"'=\s])\s*#([0-9a-f])\2([0-9a-f])\3([0-9a-f])\4/i, '\1 #\2\3\4')
css.gsub!(/[^\}]+\{;\}\n/, '')
css.gsub!('___BMH___', '"\"}\""')
css.gsub!(/;;+/, ';')
css.strip
end
end