module Moneta::Transformer::Helper
@api private
Public Instance Methods
escape(value)
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# File lib/moneta/transformer/helper.rb, line 7 def escape(value) value.gsub(/[^a-zA-Z0-9_-]+/){ '%' + $&.unpack('H2' * $&.bytesize).join('%').upcase } end
hmacsign(value, secret)
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# File lib/moneta/transformer/helper.rb, line 20 def hmacsign(value, secret) OpenSSL::HMAC.digest(OpenSSL::Digest::Digest.new('sha256'), secret, value) << value end
hmacverify(value, secret)
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# File lib/moneta/transformer/helper.rb, line 15 def hmacverify(value, secret) hash, value = value[0..31], value[32..-1] value if hash == OpenSSL::HMAC.digest(OpenSSL::Digest::Digest.new('sha256'), secret, value) end
spread(value)
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# File lib/moneta/transformer/helper.rb, line 32 def spread(value) ::File.join(value[0..1], value[2..-1]) end
truncate(value, maxlen)
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# File lib/moneta/transformer/helper.rb, line 24 def truncate(value, maxlen) if value.size >= maxlen digest = Digest::MD5.hexdigest(value) value = value[0, maxlen-digest.size] << digest end value end
unescape(value)
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# File lib/moneta/transformer/helper.rb, line 11 def unescape(value) value.gsub(/((?:%[0-9a-fA-F]{2})+)/){ [$1.delete('%')].pack('H*') } end