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@eric-cc-su eric-cc-su/cumin.rb

Last active Aug 29, 2015
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Cumin (Cu)stom (min)ifier for GitHub Pages site constructed by Jekyll. This is a simple minifier for javascript. Still a work in progress
=begin
author: eric-cc-su
Cumin (Cu)stom (min)ifier
This Ruby script/plugin is meant to minify files that should be minified prior to website deployment.
This plugin will ultimately support simple minification of javascript and css files.
This code is licensed under the MIT License (end of file) and under copyright by Eric Su
=end
require 'fileutils'
module Cumin
$base = Dir.pwd
@list = [] # Compilation of all scripts
comment_open = false
leadstrip = true
no_min = false
trailstrip = true
dpath = File.join($base, "javascripts")
if not File.directory?(File.join($base, "js"))
FileUtils.mkdir_p(File.join($base, "js"))
end
Dir.foreach(dpath) {
|file|
if file.end_with?(".js") and not file.end_with?(".min.js")
newfile = file.dup.sub! ".js", ".min.js"
File.open(File.join($base, "js", newfile), "w+") do |jsminfile|
File.foreach(File.join($base, "javascripts", file)) do |line|
line = line.strip
#Indicates that following code should not be minified
if line == "/*NOMIN*/"
no_min = true;
next
end
#Toggle whether spaces in front of special characters are stripped
if line == "/*LEADSTRIP*/"
leadstrip ^= 1
end
#Toggle whether spaces behind special characters are stripped
if line == "/*TRAILSTRIP*/"
trailstrip ^= 1
end
#Indicates that following code should be continued to be minified
if no_min and line != "/*YESMIN*/"
jsminfile.write(line)
next
elsif line == "/*YESMIN*/"
no_min = false
next
end
if line[0..1] == "//" # Remove comments
next
elsif line.include?("/*")
comment_open = true
open_index = line.index("/*")
if line.include?("*/")
close_index = line.index("*/")+1
comment_open = false
else
close_index = -1
line = line.sub! line[open_index..close_index], ""
end
elsif line.include?("*/") and comment_open
comment_open = false
line = line.sub! line[0..line.index("*/")+1], ""
end
# Strip spaces in front of special characters
if leadstrip
leading_space = /\s[^A-Za-z0-9"'\s]/.match(line)
while leading_space != nil
line = line.sub! leading_space.to_s, leading_space.to_s.strip
leading_space = /\s[^A-Za-z0-9"'\s]/.match(line)
end
end
# Strip spaces following special characters
if trailstrip
trailing_space = /[^A-Za-z0-9"'\s]\s/.match(line)
while trailing_space != nil
line = line.sub! trailing_space.to_s, trailing_space.to_s.strip
trailing_space = /[^A-Za-z0-9"'\s]\s/.match(line)
end
end
if comment_open
next
end
jsminfile.write(line)
end
end
end
}
end
=begin
The MIT License (MIT)
Copyright (c) 2015 Eric Su
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
=end
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