This module provides a framework for message digest libraries.
# File digest/lib/digest.rb, line 4
def self.const_missing(name)
case name
when :SHA256, :SHA384, :SHA512
lib = 'digest/sha2.so'
else
lib = File.join('digest', name.to_s.downcase)
end
begin
require lib
rescue LoadError => e
raise LoadError, "library not found for class Digest::#{name} -- #{lib}", caller(1)
end
unless Digest.const_defined?(name)
raise NameError, "uninitialized constant Digest::#{name}", caller(1)
end
Digest.const_get(name)
end
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