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Diffstat (limited to 'trunk/lib/rubygems/digest/digest_adapter.rb')
-rwxr-xr-x | trunk/lib/rubygems/digest/digest_adapter.rb | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/trunk/lib/rubygems/digest/digest_adapter.rb b/trunk/lib/rubygems/digest/digest_adapter.rb new file mode 100755 index 0000000000..d5a00b059d --- /dev/null +++ b/trunk/lib/rubygems/digest/digest_adapter.rb @@ -0,0 +1,40 @@ +#!/usr/bin/env ruby +#-- +# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. +# All rights reserved. +# See LICENSE.txt for permissions. +#++ + +module Gem + + # There is an incompatibility between the way Ruby 1.8.5 and 1.8.6 + # handles digests. This DigestAdapter will take a pre-1.8.6 digest + # and adapt it to the 1.8.6 API. + # + # Note that only the digest and hexdigest methods are adapted, + # since these are the only functions used by Gems. + # + class DigestAdapter + + # Initialize a digest adapter. + def initialize(digest_class) + @digest_class = digest_class + end + + # Return a new digester. Since we are only implementing the stateless + # methods, we will return ourself as the instance. + def new + self + end + + # Return the digest of +string+ as a hex string. + def hexdigest(string) + @digest_class.new(string).hexdigest + end + + # Return the digest of +string+ as a binary string. + def digest(string) + @digest_class.new(string).digest + end + end +end
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