memcache.rb in fiveruns-memcache-client-1.5.0.5

- old
+ new

@@ -2,43 +2,12 @@
 
 require 'socket'
 require 'thread'
 require 'timeout'
 require 'rubygems'
+require 'zlib'
 
-class String
-
-  ##
-  # Uses the ITU-T polynomial in the CRC32 algorithm.
-  begin
-    require 'crc32'
-    def crc32_ITU_T
-      CRC32.itu_t(self)
-    end
-  rescue LoadError => e
-    puts "Loading with slow CRC32 ITU-T implementation: #{e.message}"
-    
-    def crc32_ITU_T
-      r = 0xFFFFFFFF
-
-      each_byte do |i|
-        r ^= i
-        8.times do
-          if (r & 1) != 0 then
-            r = (r>>1) ^ 0xEDB88320
-          else
-            r >>= 1
-          end
-        end
-      end
-
-      r ^ 0xFFFFFFFF
-    end
-  end
-  
-end
-
 ##
 # A Ruby client library for memcached.
 #
 # This is intended to provide access to basic memcached functionality.  It
 # does not attempt to be complete implementation of the entire API, but it is
@@ -498,10 +467,10 @@
   ##
   # Returns an interoperable hash value for +key+.  (I think, docs are
   # sketchy for down servers).
 
   def hash_for(key)
-    (key.crc32_ITU_T >> 16) & 0x7fff
+    (Zlib.crc32(key) >> 16) & 0x7fff
   end
 
   ##
   # Performs a raw decr for +cache_key+ from +server+.  Returns nil if not
   # found.