A shell script to inline html styles from a static html page. requires premailer.

build_email.sh

#!/usr/bin/env ruby
 
require "premailer"
require "optparse"
 
OptionParser.new do |o|
  o.on('-d OUTPUT_FOLDER') { |b| $destination = b }
  o.on('-o OUTPUT_FILENAME') { |b| $output = b }
  o.on('-f INPUT_FILENAME') { |filename| $filename = filename }
  o.on('-h') { puts o; exit }
  o.parse!
end
 
unless File.directory?("./build")
  p "Bro... Seriously trying to run this without building the middleman!?"
  exit
end
 
unless File.exist?("./build/#{$filename}")
  p "Can't find that email, sorry bro"
  exit
end
 
premailer = Premailer.new("./build/#{$filename}", :warn_level => Premailer::Warnings::SAFE)
 
output_dir = $destination || "email"
 
output_filename = $output || $filename
 
if !File.directory?("#{Dir.pwd}/#{output_dir}")
  Dir.mkdir("#{Dir.pwd}/#{output_dir}")
end
 
output_path = "#{Dir.pwd}/#{output_dir}/#{output_filename}"
 
p output_path
 
File.open(output_path, "w") do |fout|
  fout.puts premailer.to_inline_css
end