38 lines
797 B
Ruby
38 lines
797 B
Ruby
require "open-uri"
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class FileHelper
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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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def self.download(url, max_file_size, tmp_file_name)
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raise Discourse::InvalidParameters unless url =~ /^https?:\/\//
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uri = URI.parse(url)
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extension = File.extname(uri.path)
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tmp = Tempfile.new([tmp_file_name, extension])
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File.open(tmp.path, "wb") do |f|
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downloaded = uri.open("rb", read_timeout: 5)
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while f.size <= max_file_size && data = downloaded.read(max_file_size)
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f.write(data)
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end
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downloaded.close!
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end
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tmp
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end
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private
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def self.images
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@@images ||= Set.new ["jpg", "jpeg", "png", "gif", "tif", "tiff", "bmp"]
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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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