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#
# File compressor plugin for jekyll
# =================================
#
# By [mytharcher](https://github.com/mytharcher)
# 2012-05-20
#
# Updated by [nicoespeon](https://github.com/nicoespeon)
# 2013-04-12
#
# This plugin for compressing text files, including
# HTML and JavaScript of jekyll site. NOT support CSS
# file yet.
#
# The JavaScript compressing requires 'packr', a
# third-party lib. I'm not sure if GitHub has this
# extension. But the compressor for HTML files works OK.
#
# For HTML files it uses Alan Moore's regexp :
# http://stackoverflow.com/questions/5312349/minifying-final-html-output-using-regular-expressions-with-codeigniter
# It removes spaces between HTML, excepted within
# <textarea> and <pre> code, so you don't get into trouble!
#
require 'packr'
module Jekyll
module Compressor
def compress_html(content)
content.gsub(/(?>[^\S ]\s*|\s{2,})(?=(?:(?:[^<]++|<(?!\/?(?:textarea|pre)\b))*+)(?:<(?>textarea|pre)\b|\z))/ix, '')
end
# Really writing process
def output_file(dest, content)
FileUtils.mkdir_p(File.dirname(dest))
File.open(dest, 'w') do |f|
f.write(content)
end
end
def output_html(dest, content)
path = self.destination(dest)
if File.extname(path) == ".xml"
self.output_file(path, content)
else
self.output_file(path, compress_html(content))
end
end
def output_js(dest, content)
self.output_file(dest, Packr.pack(content,
:shrink_vars => true
))
end
end
# Overwrite old methods to insert a hook
class Post
include Compressor
def write(dest)
self.output_html(dest, self.output)
end
end
class Page
include Compressor
def write(dest)
self.output_html(dest, self.output)
end
end
class StaticFile
include Compressor
def write(dest)
dest_path = self.destination(dest)
return false if File.exist?(dest_path) and !self.modified?
@@mtimes[path] = mtime
case File.extname(dest_path)
when '.html'
self.output_html(dest_path, File.read(path))
when '.js'
self.output_js(dest_path, File.read(path))
else
FileUtils.mkdir_p(File.dirname(dest_path))
FileUtils.cp(path, dest_path)
end
true
end
end
end
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