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require 'digest.so'
module Digest
autoload "SHA256", "digest/sha2.so"
autoload "SHA384", "digest/sha2.so"
autoload "SHA512", "digest/sha2.so"
def self.const_missing(name)
begin
require File.join('digest', name.to_s.downcase)
return Digest.const_get(name) if Digest.const_defined?(name)
rescue LoadError => e
end
raise NameError, "Digest class not found: Digest::#{name}"
end
class ::Digest::Class
# creates a digest object and reads a given file, _name_.
#
# p Digest::SHA256.file("X11R6.8.2-src.tar.bz2").hexdigest
# # => "f02e3c85572dc9ad7cb77c2a638e3be24cc1b5bea9fdbb0b0299c9668475c534"
def self.file(name)
new.file(name)
end
end
module Instance
# updates the digest with the contents of a given file _name_ and
# returns self.
def file(name)
File.open(name, "rb") {|f|
buf = ""
while f.read(16384, buf)
update buf
end
}
self
end
end
end
def Digest(name)
Digest.const_get(name)
end
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