Update encodings code

lib/mail/encodings/7bit.rb

@@ -6,21 +6,21 @@ class SevenBit < EightBit
 
       PRIORITY = 1
 
-      # 7bit is an identiy encoding, meaning nothing to do
+      # 7bit and 8bit operate the same
 
       # Decode the string
       def self.decode(str)
-        str.to_crlf
+        super
       end
 
       # Encode the string
       def self.encode(str)
-        str.to_crlf
+        super
       end
 
       # Idenity encodings have a fixed cost, 1 byte out per 1 byte in
       def self.cost(str)
-        1.0
+        super 
       end
 
       Encodings.register(NAME, self) 

lib/mail/encodings/8bit.rb

@@ -10,7 +10,7 @@ class EightBit < Binary
 
       # Decode the string
       def self.decode(str)
-        str.to_crlf
+        str.to_lf
       end
 
       # Encode the string

lib/mail/encodings/encodings.rb

@@ -41,13 +41,10 @@ def Encodings.get_encoding( str )
     end
 
     def Encodings.get_all
-      @transfer_encodings.keys
+      @transfer_encodings.values
     end
 
     def Encodings.get_name(enc)
-      if enc.is_a? Class then
-        enc = enc::Name
-      end
       enc = enc.to_s.gsub("-", "_").downcase
     end
 

lib/mail/encodings/transfer_encoding.rb

@@ -22,6 +22,37 @@ def self.can_encode?(enc)
       def self.cost(str)
         raise "Unimplemented"
       end
+
+      def self.to_s
+        self::NAME
+      end
+
+      def self.get_best_compatible(source_encoding, str)
+        if self.can_transport? source_encoding then
+            source_encoding 
+        else
+            choices = []
+            Encodings.get_all.each do |enc|
+                choices << enc if self.can_transport? enc and enc.can_encode? source_encoding
+            end
+            best = nil 
+            best_cost = 100
+            choices.each do |enc|
+                this_cost = enc.cost str
+                if this_cost < best_cost then
+                    best_cost = this_cost
+                    best = enc
+                elsif this_cost == best_cost then 
+                    best = enc if enc::PRIORITY < best::PRIORITY
+                end
+            end
+            best
+        end
+      end
+
+      def to_s
+        self.class.to_s
+      end
     end
   end
 end