text to svg (for debugging)

my_svg.rb

require 'erb'

class MySVG
  include ERB::Util
  SRC = <<EOS
<svg xmlns='http://www.w3.org/2000/svg'><%
  x = 10
  dy = 18
  y = dy
  font = 16
%><g x='<%= x %>' font-size='<%= font %>' font-family='Helvetica' fill='navy'><%
  text.each_line do |line|
    line.chomp!
%><text y='<%= y %>' xml:space='preserve'><%=h line %></text><%
    y += dy
  end 
%></g>
</svg>
EOS

  ERB.new(SRC).def_method(self,'to_svg(text)')

  def to_url(text)
    svg = to_svg(text)
    'data:image/svg+xml,' + svg.chomp!.gsub!(/[#"]/){|c|ERB::Util.url_encode(c)}
  end
end

puts MySVG.new.to_svg(File.read(__FILE__))
# puts MySVG.new.to_url(File.read(__FILE__))