class Powersnap
Attributes
prefix[RW]
urls[RW]
Public Class Methods
default_powersnap_config()
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# File lib/powersnap.rb, line 9 def default_powersnap_config { "prefix" => nil } end
new(urls, prefix: nil)
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# File lib/powersnap.rb, line 14 def initialize(urls, prefix: nil) prefix ||= self.class.powersnap_config["prefix"] @urls = urls.map { |url| URI.encode(url) } @prefix = prefix end
powersnap_config()
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# File lib/powersnap.rb, line 5 def powersnap_config @system_prefix ||= (File.exist?("powersnap.yml") ? YAML.load_file("powersnap.yml") : default_powersnap_config) end
Public Instance Methods
generate(dir: ".", width: 768, height: 1024, pattern: "image-{index}.png", zoom: 1.0, page: false, quality: 100, css: nil)
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# File lib/powersnap.rb, line 20 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