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817afbd987
- Introduce versioning in Digest::Base API, and prefix C
constants with RUBY_ and C type names with rb_ to avoid name
clash in writing extensions.
- Introduce Digest::Class and Digest::Instance for ease of
implementing subclasses and add-ons.
- Digest::Instance module requires and assumes that any instance
be resettable and clonable. An instance method #new() is
added so digest instances work just like digest classes.
- The constructor does no longer take an initial string to feed;
digest() and hexdigest() now do, instead. This allows digest
classes to take their own hashing parameters.
- Make some changes to digest() and hexdigest() class methods,
which now take extra arguments, which are passed through to
the constructor in an internal call.
- Add #digest_length/size/length() and #block_length(),
- Add the Digest::SHA2 class to wrap up SHA2 variants: SHA256,
SHA384 and SHA512, hoping this module would make a decent
example of a digest subclass written in Ruby.
- Rip BubbleBabble support out of the base class and have a
separate module named digest/bubblebabble.
- Remove RD documents in favor of newly written and embedded
RDoc documentation.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@11223 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
46 lines
1 KiB
Ruby
46 lines
1 KiB
Ruby
require 'digest.so'
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module Digest
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autoload "SHA256", "digest/sha2.so"
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autoload "SHA384", "digest/sha2.so"
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autoload "SHA512", "digest/sha2.so"
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def self.const_missing(name)
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begin
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require File.join('digest', name.to_s.downcase)
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return Digest.const_get(name) if Digest.const_defined?(name)
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rescue LoadError => e
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end
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raise NameError, "Digest class not found: Digest::#{name}"
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end
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class ::Digest::Class
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# creates a digest object and reads a given file, _name_.
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#
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# p Digest::SHA256.file("X11R6.8.2-src.tar.bz2").hexdigest
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# # => "f02e3c85572dc9ad7cb77c2a638e3be24cc1b5bea9fdbb0b0299c9668475c534"
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def self.file(name)
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new.file(name)
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end
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end
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module Instance
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# updates the digest with the contents of a given file _name_ and
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# returns self.
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def file(name)
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File.open(name, "rb") {|f|
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buf = ""
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while f.read(16384, buf)
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update buf
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end
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}
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self
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end
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end
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end
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def Digest(name)
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Digest.const_get(name)
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end
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