tex-boxでゲストからホストにtexディレクトリをrsyncして指定したtexファイルをPDF変換し返却するRubyスクリプト

local_convert.rb

#! /bin/sh
exec ruby -S -x "$0" "$@"
#! ruby
require 'fileutils'

src_path = ARGV[0]

unless File.exist?(src_path)
  puts 'Specified file path does not exist.'
  exit(0)
end

ext_src = File.extname(src_path)
unless ext_src == ".tex"
  puts 'Specified file path was not latex file.'
  exit(0)
end

src_dir = File.dirname(src_path)
src_file = File.basename(src_path, ext_src)
working_dir = File.expand_path(src_dir)
working_path = "#{working_dir}/#{src_file}"

unless `rsync -ur /vagrant/texs/ ~/texs/`
  puts 'rsync failed.'
  exit(0)
end

puts "Conversion started from #{src_file + ext_src} into #{src_file}.pdf"

Dir.chdir(working_dir) do
  2.times do
    cmd_platex = "platex -output-dir=#{working_dir} #{working_path + ext_src}"
    unless system(cmd_platex)
      puts 'Error occrred during platex conversion.'
      exit(0)
    end

    cmd_dvipdfmx = "dvipdfmx -o #{working_path}.pdf #{working_path}.dvi"
    unless system(cmd_dvipdfmx)
      puts 'Error occrred during dvipdfmx conversion.'
      exit(0)
    end
  end

  puts "Converion finished!"
  puts "#{working_path}.pdf"
  FileUtils.copy("#{working_path}.pdf", '/vagrant')

  puts "Copy PDF back to the local directory!"

end