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require 'uglifier'
require 'htmlcompressor'
require 'cssminify2'
require 'json/minify'
module Jekyll
module Compressor
def output_file(dest, content)
FileUtils.mkdir_p(File.dirname(dest))
File.open(dest, 'w') do |f|
f.write(content)
end
end
def output_compressed(path, context)
case File.extname(path)
when '.js'
if path.end_with?('.min.js')
output_file(path, context)
else
output_js(path, context)
end
when '.json'
output_json(path, context)
when '.css'
if path.end_with?('.min.css')
output_file(path, context)
else
output_css(path, context)
end
else
output_html(path, context)
end
end
def output_html(path, content)
if ( ENV['JEKYLL_ENV'] == "production" )
html_args = { remove_comments: true, compress_css: true, compress_javascript: true, preserve_patterns: [] }
js_args = {}
opts = @site.config['jekyll-minifier']
if ( !opts.nil? )
# Javascript Arguments
js_args[:uglifier_args] = Hash[opts['uglifier_args'].map{|(k,v)| [k.to_sym,v]}] if opts.has_key?('uglifier_args')
# HTML Arguments
html_args[:remove_spaces_inside_tags] = opts['remove_spaces_inside_tags'] if opts.has_key?('remove_spaces_inside_tags')
html_args[:remove_multi_spaces] = opts['remove_multi_spaces'] if opts.has_key?('remove_multi_spaces')
html_args[:remove_comments] = opts['remove_comments'] if opts.has_key?('remove_comments')
html_args[:remove_intertag_spaces] = opts['remove_intertag_spaces'] if opts.has_key?('remove_intertag_spaces')
html_args[:remove_quotes] = opts['remove_quotes'] if opts.has_key?('remove_quotes')
html_args[:compress_css] = opts['compress_css'] if opts.has_key?('compress_css')
html_args[:compress_javascript] = opts['compress_javascript'] if opts.has_key?('compress_javascript')
html_args[:simple_doctype] = opts['simple_doctype'] if opts.has_key?('simple_doctype')
html_args[:remove_script_attributes] = opts['remove_script_attributes'] if opts.has_key?('remove_script_attributes')
html_args[:remove_style_attributes] = opts['remove_style_attributes'] if opts.has_key?('remove_style_attributes')
html_args[:remove_link_attributes] = opts['remove_link_attributes'] if opts.has_key?('remove_link_attributes')
html_args[:remove_form_attributes] = opts['remove_form_attributes'] if opts.has_key?('remove_form_attributes')
html_args[:remove_input_attributes] = opts['remove_input_attributes'] if opts.has_key?('remove_input_attributes')
html_args[:remove_javascript_protocol] = opts['remove_javascript_protocol'] if opts.has_key?('remove_javascript_protocol')
html_args[:remove_http_protocol] = opts['remove_http_protocol'] if opts.has_key?('remove_http_protocol')
html_args[:remove_https_protocol] = opts['remove_https_protocol'] if opts.has_key?('remove_https_protocol')
html_args[:preserve_line_breaks] = opts['preserve_line_breaks'] if opts.has_key?('preserve_line_breaks')
html_args[:simple_boolean_attributes] = opts['simple_boolean_attributes'] if opts.has_key?('simple_boolean_attributes')
html_args[:compress_js_templates] = opts['compress_js_templates'] if opts.has_key?('compress_js_templates')
html_args[:preserve_patterns] += [/<\?php.*?\?>/im] if opts['preserve_php'] == true
html_args[:preserve_patterns] += opts[:preserve_patterns].map { |pattern| Regexp.new(pattern)} if opts.has_key?(:preserve_patterns)
end
html_args[:css_compressor] = CSSminify2.new()
if ( !js_args[:uglifier_args].nil? )
html_args[:javascript_compressor] = Uglifier.new(js_args[:uglifier_args])
else
html_args[:javascript_compressor] = Uglifier.new()
end
compressor = HtmlCompressor::Compressor.new(html_args)
output_file(path, compressor.compress(content))
else
output_file(path, content)
end
end
def output_js(path, content)
if ( ENV['JEKYLL_ENV'] == "production" )
js_args = {}
opts = @site.config['jekyll-minifier']
compress = true
if ( !opts.nil? )
compress = opts['compress_javascript'] if opts.has_key?('compress_javascript')
js_args[:uglifier_args] = Hash[opts['uglifier_args'].map{|(k,v)| [k.to_sym,v]}] if opts.has_key?('uglifier_args')
end
if ( compress )
if ( !js_args[:uglifier_args].nil? )
compressor = Uglifier.new(js_args[:uglifier_args])
else
compressor = Uglifier.new()
end
output_file(path, compressor.compile(content))
else
output_file(path, content)
end
else
output_file(path, content)
end
end
def output_json(path, content)
if ( ENV['JEKYLL_ENV'] == "production" )
opts = @site.config['jekyll-minifier']
compress = true
if ( !opts.nil? )
compress = opts['compress_json'] if opts.has_key?('compress_json')
end
if ( compress )
output_file(path, JSON.minify(content))
else
output_file(path, content)
end
else
output_file(path, content)
end
end
def output_css(path, content)
if ( ENV['JEKYLL_ENV'] == "production" )
opts = @site.config['jekyll-minifier']
compress = true
if ( !opts.nil? )
compress = opts['compress_css'] if opts.has_key?('compress_css')
end
if ( compress )
compressor = CSSminify2.new()
output_file(path, compressor.compress(content))
else
output_file(path, content)
end
else
output_file(path, content)
end
end
private
def exclude?(dest, dest_path)
file_name = dest_path.slice(dest.length+1..dest_path.length)
exclude.any? { |e| e == file_name || File.fnmatch(e, file_name) }
end
def exclude
@exclude ||= Array(@site.config.dig('jekyll-minifier', 'exclude'))
end
end
class Document
include Compressor
def write(dest)
dest_path = destination(dest)
if exclude?(dest, dest_path)
output_file(dest_path, output)
else
output_compressed(dest_path, output)
end
trigger_hooks(:post_write)
end
end
class Page
include Compressor
def write(dest)
dest_path = destination(dest)
if exclude?(dest, dest_path)
output_file(dest_path, output)
else
output_compressed(dest_path, output)
end
Jekyll::Hooks.trigger hook_owner, :post_write, self
end
end
class StaticFile
include Compressor
def copy_file(path, dest_path)
FileUtils.mkdir_p(File.dirname(dest_path))
FileUtils.cp(path, dest_path)
end
def write(dest)
dest_path = destination(dest)
return false if File.exist?(dest_path) and !modified?
self.class.mtimes[path] = mtime
if exclude?(dest, dest_path)
copy_file(path, dest_path)
else
case File.extname(dest_path)
when '.js'
if dest_path.end_with?('.min.js')
copy_file(path, dest_path)
else
output_js(dest_path, File.read(path))
end
when '.json'
output_json(dest_path, File.read(path))
when '.css'
if dest_path.end_with?('.min.css')
copy_file(path, dest_path)
else
output_css(dest_path, File.read(path))
end
when '.xml'
output_html(dest_path, File.read(path))
else
copy_file(path, dest_path)
end
end
true
end
end
end