#!/usr/bin/env ruby

# Example usage:  ./stripjs.rb --files path/to/file.html
# Example usage with find:  ./stripjs.rb --files $(find . -name '*.html' -print0 | tr '\0' ,)

require 'optparse'
require 'nokogiri'

options = {}
optparse = OptionParser.new do |opts|
  # opts.banner = "Usage: test.rb [options]"
  opts.on("--files file1,file2", Array, "Html files") do |f|
    options[:files] = f
  end
end

begin
  optparse.parse!
  mandatory = [:files]
  missing = mandatory.select{ |param| options[param].nil? }
  unless missing.empty?
    raise OptionParser::MissingArgument.new(missing.join(', '))
  end
rescue OptionParser::InvalidOption, OptionParser::MissingArgument
  puts $!.to_s
  puts optparse
  exit
end

options[:files].each do |file|
  doc = File.open(file) { |f| Nokogiri::HTML(f) }
  doc.search('//script').remove
  puts "Write file #{file}\n"
  File.write(file, doc.to_html)
end