mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 13:03:45 +08:00
108 lines
2.5 KiB
Ruby
108 lines
2.5 KiB
Ruby
require "final_destination"
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require "mini_mime"
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require "open-uri"
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class FileHelper
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def self.log(log_level, message)
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Rails.logger.public_send(
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log_level,
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"#{RailsMultisite::ConnectionManagement.current_db}: #{message}"
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)
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end
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def self.is_image?(filename)
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filename =~ images_regexp
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end
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class FakeIO
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attr_accessor :status
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end
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def self.download(url,
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max_file_size:,
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tmp_file_name:,
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follow_redirect: false,
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read_timeout: 5,
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skip_rate_limit: false,
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verbose: false)
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url = "https:" + url if url.start_with?("//")
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raise Discourse::InvalidParameters.new(:url) unless url =~ /^https?:\/\//
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tmp = nil
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fd = FinalDestination.new(
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url,
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max_redirects: follow_redirect ? 5 : 1,
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skip_rate_limit: skip_rate_limit,
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verbose: verbose
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)
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fd.get do |response, chunk, uri|
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if tmp.nil?
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# error handling
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if uri.blank?
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if response.code.to_i >= 400
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# attempt error API compatibility
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io = FakeIO.new
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io.status = [response.code, ""]
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raise OpenURI::HTTPError.new("#{response.code} Error", io)
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else
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log(:error, "FinalDestination did not work for: #{url}") if verbose
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throw :done
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end
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end
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# first run
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tmp_file_ext = File.extname(uri.path)
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if tmp_file_ext.blank? && response.content_type.present?
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ext = MiniMime.lookup_by_content_type(response.content_type)&.extension
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ext = "jpg" if ext == "jpe"
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tmp_file_ext = "." + ext if ext.present?
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end
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tmp = Tempfile.new([tmp_file_name, tmp_file_ext])
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tmp.binmode
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end
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tmp.write(chunk)
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throw :done if tmp.size > max_file_size
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end
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tmp&.rewind
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tmp
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end
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def self.optimize_image!(filename)
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ImageOptim.new(
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# GLOBAL
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timeout: 15,
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skip_missing_workers: true,
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# PNG
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optipng: { level: 2, strip: SiteSetting.strip_image_metadata },
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advpng: false,
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pngcrush: false,
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pngout: false,
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pngquant: false,
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# JPG
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jpegoptim: { strip: SiteSetting.strip_image_metadata ? "all" : "none" },
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jpegtran: false,
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jpegrecompress: false,
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).optimize_image!(filename)
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end
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private
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def self.images
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@@images ||= Set.new %w{jpg jpeg png gif tif tiff bmp svg webp ico}
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end
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def self.images_regexp
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@@images_regexp ||= /\.(#{images.to_a.join("|")})$/i
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end
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end
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