orbit-basic/app/models/design/stylesheet.rb

class Stylesheet < DesignFile
  embedded_in :design
  mount_uploader :file_orig, AssetUploader
  
  def parse_urls
    orig_content = content = self.file.read.force_encoding("UTF-8")
    # self.remove_file!
    # self.remove_file_orig!
    names = []
    images = self.design.images
    content.scan(/(?<=url)(.*?)(?=\))/){
      css_name = $1.gsub(' ','').gsub('(','')
      name = File.basename(css_name).gsub(/[\\\"]/, '')
      file_name = images.detect{ |i| i.file_identifier.eql?(name) }.file_url rescue nil
      names << [css_name, file_name]
    }
    names.each do |name|
      content.gsub!(name[0], name[1]) if name[1]
    end
    Dir.mktmpdir('f_path') { |dir|
      orig_file_name = self.file_identifier
      
      temp_file = File.new(dir + '/' + orig_file_name, 'w+')
      temp_file.write orig_content.force_encoding("UTF-8")
      self.file_orig = temp_file
      
      temp_file = File.new(dir + '/' + orig_file_name, 'w+')
      temp_file.write content.force_encoding("UTF-8")
      self.file = temp_file
      self.save
    }    
  end
  
end