with Ada.Text_IO;
with Ada.Text_IO.Unbounded_IO;
with Ada.Strings.Unbounded;      use Ada.Strings.Unbounded;
with Ada.Containers.Vectors;     use Ada.Containers;
 
procedure Quotes is
   package IO renames Ada.Text_IO;
   package SUIO renames Ada.Text_IO.Unbounded_IO;
   package Quote_Container is new Vectors (Natural, Unbounded_String);
   use Quote_Container;
   Quotes    : Vector;
   Input     : IO.File_Type;
   Needle    : Unbounded_String;
 
   function Reverse_Contains (Container : Vector;
                              Item : Unbounded_String) return Boolean is
   begin
      return Container.Reverse_Find_Index (Item =>  Item) /= No_Index;
   end Reverse_Contains;     
begin
   IO.Open (File => Input,
            Mode => IO.In_File,
            Name => "quotes.txt");
   while not IO.End_Of_File (File => Input) loop
      Quotes.Append (New_Item => SUIO.Get_Line (File => Input));
   end loop;
   IO.Close (Input);
 
   Needle := To_Unbounded_String ("FooBar");
   if Reverse_Contains (Container => Quotes, 
                        Item => Needle) then
      IO.Put_Line (Item => "Found!");   
   else
      IO.Put_Line (Item => "Not found!");   
   end if;
 
   Needle := To_Unbounded_String 
     ("Most days I wake up thinking I'm the luckiest bastard alive.");
   if Reverse_Contains (Container => Quotes, 
                        Item => Needle) then
      IO.Put_Line (Item => "Found!");   
   else
      IO.Put_Line (Item => "Not found!");   
   end if;
end Quotes;

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