Cleaned up the layout quite a bit to make Gemifying and including into Rails 3 less painful. Some steps to 1.9 compatibility

lib/net/ldap/core_ext/array.rb

@@ -0,0 +1,42 @@
+module Net
+  class LDAP
+    module Extensions
+      module Array
+        #
+        # to_ber_appsequence
+        # An application-specific sequence usually gets assigned
+        # a tag that is meaningful to the particular protocol being used.
+        # This is different from the universal sequence, which usually
+        # gets a tag value of 16.
+        # Now here's an interesting thing: We're adding the X.690
+        # "application constructed" code at the top of the tag byte (0x60),
+        # but some clients, notably ldapsearch, send "context-specific
+        # constructed" (0xA0). The latter would appear to violate RFC-1777,
+        # but what do I know? We may need to change this.
+        #
+
+        def to_ber                 id = 0; to_ber_seq_internal( 0x30 + id ); end
+        def to_ber_set             id = 0; to_ber_seq_internal( 0x31 + id ); end
+        def to_ber_sequence        id = 0; to_ber_seq_internal( 0x30 + id ); end
+        def to_ber_appsequence     id = 0; to_ber_seq_internal( 0x60 + id ); end
+        def to_ber_contextspecific id = 0; to_ber_seq_internal( 0xA0 + id ); end
+
+        def to_ber_oid
+          ary = self.dup
+          first = ary.shift
+          raise Net::BER::BerError.new( "invalid OID" ) unless [0,1,2].include?(first)
+          first = first * 40 + ary.shift
+          ary.unshift first
+          oid = ary.pack("w*")
+          [6, oid.length].pack("CC") + oid
+        end
+
+        private
+        def to_ber_seq_internal code
+          s = self.to_s
+          [code].pack('C') + s.length.to_ber_length_encoding + s
+        end
+      end
+    end
+  end
+end # class Array