kindlegen用のhtmlを作る

jpg2html.rb

#!/usr/bin/env ruby
require 'optparse'

def tag(name, attr = nil, content = nil)
  unless attr or content
    return "<#{name}>"
  end

  if not attr and content
    return "<#{name}>#{content}</#{name}>"
  end

  # has attr
  attr_str = attr.each_pair.map{|k,v| "#{k}=\"#{v}\""}.join(" ")

  unless content
    return "<#{name} #{attr_str}>"
  end

  return "<#{name} #{attr_str}>#{content}</#{name}>"
end

banner = <<EOF
usage
jpg2html.rb *.jpg
EOF

config = { }
parser = OptionParser.new(banner) {|opt|
  opt.on('--title TITLE', 'specify title') {|v|
    config[:title] = v
  }
  opt.parse!(ARGV)
}

file = config[:title] or 'out.html'

if ARGV.empty?
  puts parser.to_s
  exit(1)
end

filename = (config[:title] || 'out') + '.html'

open(filename, 'w') {|f|
  f.puts tag('html')
  f.puts tag('head')
  f.puts tag('meta', "http-equiv" => "Content-Type",  "content" => "text/html; charset=utf-8")
  f.puts tag('title', nil, config[:title]) if config[:title]
  f.puts tag('/head')
  f.puts tag('body')
  ARGV.each{|file|
    f.puts tag("img", "src" => File.expand_path(file))
    f.puts tag("br")
  }
  f.puts tag('/body')
  f.puts tag('/html')
}

puts filename