Class: Valkyrie::Shrine::Checksum::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/valkyrie/shrine/checksum/base.rb

Direct Known Subclasses

FileSystem, S3

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.digest_class ⇒ Object 



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# File 'lib/valkyrie/shrine/checksum/base.rb', line 7

def self.digest_class
  Digest::SHA256
end

Instance Method Details

#checksum_for(io) ⇒ Object 



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# File 'lib/valkyrie/shrine/checksum/base.rb', line 19

def checksum_for(io)
  simple_digest(io)
end

#digest_class ⇒ Object 



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# File 'lib/valkyrie/shrine/checksum/base.rb', line 11

def digest_class
  self.class.digest_class
end

#simple_digest(io) ⇒ Object 



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# File 'lib/valkyrie/shrine/checksum/base.rb', line 23

def simple_digest(io)
  digest_class.new.tap do |result|
    io.rewind
    while (chunk = io.read(16 * 1024))
      result << chunk
    end
  end
end

#verify_checksum(io, result) ⇒ Object 



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# File 'lib/valkyrie/shrine/checksum/base.rb', line 15

def verify_checksum(io, result)
  checksum_for(io) == calculate_checksum(result)
end