KMLCacher.rb

# description: given a KML file or URL this script caches all the remote files to a local directory and creates a KMZ (zipped KML)
# usage: cache_kml.rb "http://maps.nanaimo.ca/data/property/109332.kml"

%w{ rubygems open-uri uri }.each {|gem| require gem}

kml = ARGV[0]
filename = URI.parse(kml).path.split("/").last
dir = filename.gsub(/\.\w+/,'')

file = open(kml).read
urls = URI.extract(file)
system("mkdir #{dir}")
urls.each do |url|
  uri = URI.parse(url)
  unless uri.path.nil?
    puts uri.to_s
    ufile = uri.path.split("/").last
    system("curl -s --create-dirs -o #{dir}#{uri.path} #{uri.scheme}://#{uri.host}#{uri.path}")
    file.gsub!("#{uri.scheme}://#{uri.host}#{uri.path}","#{dir}#{uri.path}")
  end
end

File.open("#{dir}/doc.kml", "w") {|f| f << file}
system("zip -r #{dir} #{dir}.kmz")