Small script that modifies the content of the clipboard by HTML encoding dangerous characters and wraps i in a <pre>-tag. Used when blogging source code.

preformat.rb

=begin
  TO INSTALL DEPENDENCIES
  -----------------------
  gem install ffi           <-- For Windows users
  gem install clipboard
=end

HTML_CODES = {
  "&" => "&amp;",
  ">" => "&gt;",
  "<" => "&lt;",
  "\\" => "&#92;",
  "\t" => "  "
}

def html_wrap tag, content
  "<#{tag}>#{content}</#{tag}>"
end

require "clipboard"
source = Clipboard.paste

HTML_CODES.each {|c,s| source.gsub! c,s }

Clipboard.copy html_wrap("pre", source)

hr = "-" * 60

puts "Copied to clipboard:"
puts hr
puts Clipboard.paste
puts hr