create_sprite.rb

# SVG Squash
# Alasdair Monk

require 'Nokogiri'

puts "Creating sprite..."
svgs = Dir["./**.svg"]
contents =""

# Loop thru svgs in directory
svgs.each do |svg|
  puts "Reading #{svg}"
  file      = File.open(svg, "rb")
  filename  = File.basename(file,File.extname(file))
  doc       = File.open(file) { |f| Nokogiri::XML(f) }
  paths     = doc.at_css("path")
  viewbox   = doc.at_css('svg')['viewBox']
  contents  += "<symbol id='#{filename}' viewbox='#{viewbox}'>#{paths}</symbol>"
  file.close
end

# Write out sprite.svg
open('./sprite.svg', 'w') { |f|
  f.puts %q(<?xml version="1.0" encoding="UTF-8" standalone="no"?>
    <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="position:absolute;width:0;height:0;visibility:hidden">
      <defs>
        <linearGradient x1="0%" y1="0%" x2="100%" y2="100%" id="purple-gradient">
          <stop stop-color="#AC8ECE" offset="0%"></stop>
          <stop stop-color="#79589F" offset="100%"></stop>
        </linearGradient>
        <linearGradient x1="0%" y1="0" x2="100%" y2="100%" id="green-gradient">
          <stop stop-color="#ADE28F" offset="0%"></stop>
          <stop stop-color="#74C080" offset="100%"></stop>
        </linearGradient>
  )

  f.puts contents

  f.puts %q(
      </defs>
    </svg>
  )
}