Contents

class Powersnap
  attr_accessor :urls, :prefix

  class << self
    def powersnap_config
      @system_prefix ||= (File.exist?("powersnap.yml") ? YAML.load_file("powersnap.yml") : default_powersnap_config)
    end

    def default_powersnap_config
      { "prefix" => nil }
    end
  end

  def initialize(urls, prefix: nil)
    prefix ||= self.class.powersnap_config["prefix"]
    @urls = urls.map { |url| URI.encode(url) }
    @prefix = prefix
  end

  def generate(dir: ".", width: 768, height: 1024, pattern: "image-{index}.png", zoom: 1.0, page: false, quality: 100, css: nil)
    extension = File.extname(pattern)
    if extension == ".jpg"
      format = "jpeg"
    elsif extension == ".png"
      format = "png"
    else
      raise "Invalid file extension: #{extension}"
    end
    cmd = "#{@prefix} powersnap -j -d \"#{dir}\" -t \"#{format}\" -q #{quality} -z #{zoom} #{page ? '--page' : ''} -w #{width.to_i} -h #{height.to_i} #{(css and "-c #{css}")} -f \"#{pattern}\" #{@urls.join(' ')}"
    json_response = `#{cmd}`
    JSON.parse(json_response) rescue { "status" => "error" }
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
maglove-2.0.11	lib/powersnap.rb
maglove-2.0.10	lib/powersnap.rb
maglove-2.0.9	lib/powersnap.rb
maglove-2.0.8	lib/powersnap.rb
maglove-2.0.7	lib/powersnap.rb