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#!/usr/bin/env ruby
module MinifyResources
CSS_BLOB = 'public/blob.css'
CSS_DIR = 'public/css'
CSS_LIST = 'public/css/manifest.txt'
CSS_FILES = File.exists?(CSS_LIST) ? IO.read(CSS_LIST).scan(/\S+/) : Dir.chdir(CSS_DIR){ Dir['*.css'] }
JS_BLOB = 'public/blob.js'
JS_DIR = 'public/js'
JS_LIST = 'public/js/manifest.txt'
JS_FILES = File.exists?(JS_LIST) ? IO.read(JS_LIST).scan(/\S+/) : Dir.chdir(JS_DIR){ Dir['*.js'] }
def self.minify_all
require 'jsmin'
require 'cssmin'
minify( ::JSMin, JS_DIR, JS_FILES, JS_BLOB )
minify( ::CSSMin, CSS_DIR, CSS_FILES, CSS_BLOB )
end
def self.minify( lib, source_dir, files, output )
return if files.empty?
require_relative 'helpers/nicebytes'
raw_size = 0
minified = files.map do |file|
raw = IO.read(File.join(source_dir,file))
raw_size += raw.length
lib.minify(raw.dup)
end.join
min_size = minified.length
existing = File.exists?(output) && IO.read(output)
if minified==existing
puts "No change to #{output}"
else
File.open(output,"w"){ |f| f << minified }
puts "%i files => %s; %s => %s (%.1f%% reduction)" % [
files.length,
output,
NiceBytes.nice_bytes(raw_size),
NiceBytes.nice_bytes(min_size),
100*(raw_size-min_size)/raw_size
]
end
end
end
MinifyResources.minify_all if __FILE__==$0