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Overview
Comment:tools/smaz: basic adaptation to use the generic framework
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: ab9c060396d68b18fa0cb1085598447059a65066
User & Date: nat 2016-11-29 20:37:10
Context
2016-11-30
22:30
natools.gpr: add a profiling mode to the build check-in: 2a24860505 user: nat tags: trunk
2016-11-29
20:37
tools/smaz: basic adaptation to use the generic framework check-in: ab9c060396 user: nat tags: trunk
2016-11-28
22:31
smaz_tools-gnat: duplication of GNAT tools for generic-based tree check-in: 29b53deb6d user: nat tags: trunk
Changes
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Changes to tools/smaz.adb.

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with Ada.Strings.Fixed;
with Ada.Strings.Unbounded;
with Ada.Text_IO.Text_Streams;
with Natools.Getopt_Long;
with Natools.Parallelism;
with Natools.S_Expressions.Parsers;
with Natools.S_Expressions.Printers;
with Natools.Smaz.Tools;

with Natools.Smaz.Tools.GNAT;

with Natools.String_Escapes;

procedure Smaz is
   function To_SEA (S : String) return Ada.Streams.Stream_Element_Array
     renames Natools.S_Expressions.To_Atom;

   package Holders is new Ada.Containers.Indefinite_Holders
     (Natools.Smaz.Dictionary, Natools.Smaz."=");



   package Methods renames Natools.Smaz.Tools.Methods;

   package Actions is
      type Enum is
        (Nothing,
         Decode,
         Encode,
         Evaluate);







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with Ada.Strings.Fixed;
with Ada.Strings.Unbounded;
with Ada.Text_IO.Text_Streams;
with Natools.Getopt_Long;
with Natools.Parallelism;
with Natools.S_Expressions.Parsers;
with Natools.S_Expressions.Printers;
with Natools.Smaz_256;
with Natools.Smaz_Generic.Tools;
with Natools.Smaz_Tools;
with Natools.Smaz_Tools.GNAT;
with Natools.String_Escapes;

procedure Smaz is
   function To_SEA (S : String) return Ada.Streams.Stream_Element_Array
     renames Natools.S_Expressions.To_Atom;

   package Holders is new Ada.Containers.Indefinite_Holders
     (Natools.Smaz_256.Dictionary, Natools.Smaz_256."=");

   package Tools_256 is new Natools.Smaz_256.Tools;

   package Methods renames Natools.Smaz_Tools.Methods;

   package Actions is
      type Enum is
        (Nothing,
         Decode,
         Encode,
         Evaluate);
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      Max_Sub_Size : Positive := 3;
      Max_Word_Size : Positive := 10;
      Dict_Size : Positive := 254;
      Vlen_Verbatim : Boolean := True;
      Max_Pending : Ada.Containers.Count_Type
        := Ada.Containers.Count_Type'Last;
      Job_Count : Natural := 0;
      Filter_Threshold : Natools.Smaz.Tools.String_Count := 0;
      Score_Method : Methods.Enum := Methods.Encoded;
      Action : Actions.Enum := Actions.Nothing;
      Ada_Dictionary : Ada.Strings.Unbounded.Unbounded_String;
      Hash_Package : Ada.Strings.Unbounded.Unbounded_String;
      Dict_Source : Dict_Sources.Enum := Dict_Sources.S_Expression;
   end record;

   overriding procedure Option
     (Handler  : in out Callback;
      Id       : in Options.Id;
      Argument : in String);

   overriding procedure Argument
     (Handler  : in out Callback;
      Argument : in String)
     is null;


   procedure Evaluate_Dictionary
     (Job_Count : in Natural;
      Dict : in Natools.Smaz.Dictionary;
      Corpus : in Natools.Smaz.Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Natools.Smaz.Tools.Dictionary_Counts);
      --  Dispatch to parallel or non-parallel version of Evaluate_Dictionary
      --  depending on Job_Count.

   function Getopt_Config return Getopt.Configuration;
      --  Build the configuration object

   procedure Optimization_Round
     (Dict : in out Holders.Holder;
      Score : in out Ada.Streams.Stream_Element_Count;
      Counts : in out Natools.Smaz.Tools.Dictionary_Counts;
      Pending_Words : in out Natools.Smaz.Tools.String_Lists.List;
      Input_Texts : in Natools.Smaz.Tools.String_Lists.List;
      Job_Count : in Natural;
      Method : in Methods.Enum;
      Updated : out Boolean);
      --  Try to improve on Dict by replacing a single entry from it with
      --  one of the substring in Pending_Words.

   function Optimize_Dictionary
     (Base : in Natools.Smaz.Dictionary;
      Pending_Words : in Natools.Smaz.Tools.String_Lists.List;
      Input_Texts : in Natools.Smaz.Tools.String_Lists.List;
      Job_Count : in Natural;
      Method : in Methods.Enum)
     return Natools.Smaz.Dictionary;
      --  Optimize the dictionary on Input_Texts, starting with Base and
      --  adding substrings from Pending_Words.

   procedure Parallel_Evaluate_Dictionary
     (Job_Count : in Positive;
      Dict : in Natools.Smaz.Dictionary;
      Corpus : in Natools.Smaz.Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Natools.Smaz.Tools.Dictionary_Counts);
      --  Return the same results as Natools.Smaz.Tools.Evaluate_Dictionary,
      --  but hopefully more quickly, using Job_Count tasks.

   procedure Print_Dictionary
     (Filename : in String;
      Dictionary : in Natools.Smaz.Dictionary;
      Hash_Package_Name : in String := "");
   procedure Print_Dictionary
     (Output : in Ada.Text_IO.File_Type;
      Dictionary : in Natools.Smaz.Dictionary;
      Hash_Package_Name : in String := "");
      --  print the given dictionary in the given file

   procedure Print_Help
     (Opt : in Getopt.Configuration;
      Output : in Ada.Text_IO.File_Type);
      --  Print the help text to the given file

   function To_Dictionary
     (Handler : in Callback'Class;
      Input : in Natools.Smaz.Tools.String_Lists.List)
     return Natools.Smaz.Dictionary;
      --  Convert the input into a dictionary given the option in Handler


   overriding procedure Option
     (Handler  : in out Callback;
      Id       : in Options.Id;
      Argument : in String) is







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      Max_Sub_Size : Positive := 3;
      Max_Word_Size : Positive := 10;
      Dict_Size : Positive := 254;
      Vlen_Verbatim : Boolean := True;
      Max_Pending : Ada.Containers.Count_Type
        := Ada.Containers.Count_Type'Last;
      Job_Count : Natural := 0;
      Filter_Threshold : Natools.Smaz_Tools.String_Count := 0;
      Score_Method : Methods.Enum := Methods.Encoded;
      Action : Actions.Enum := Actions.Nothing;
      Ada_Dictionary : Ada.Strings.Unbounded.Unbounded_String;
      Hash_Package : Ada.Strings.Unbounded.Unbounded_String;
      Dict_Source : Dict_Sources.Enum := Dict_Sources.S_Expression;
   end record;

   overriding procedure Option
     (Handler  : in out Callback;
      Id       : in Options.Id;
      Argument : in String);

   overriding procedure Argument
     (Handler  : in out Callback;
      Argument : in String)
     is null;


   procedure Evaluate_Dictionary
     (Job_Count : in Natural;
      Dict : in Natools.Smaz_256.Dictionary;
      Corpus : in Natools.Smaz_Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Tools_256.Dictionary_Counts);
      --  Dispatch to parallel or non-parallel version of Evaluate_Dictionary
      --  depending on Job_Count.

   function Getopt_Config return Getopt.Configuration;
      --  Build the configuration object

   procedure Optimization_Round
     (Dict : in out Holders.Holder;
      Score : in out Ada.Streams.Stream_Element_Count;
      Counts : in out Tools_256.Dictionary_Counts;
      Pending_Words : in out Natools.Smaz_Tools.String_Lists.List;
      Input_Texts : in Natools.Smaz_Tools.String_Lists.List;
      Job_Count : in Natural;
      Method : in Methods.Enum;
      Updated : out Boolean);
      --  Try to improve on Dict by replacing a single entry from it with
      --  one of the substring in Pending_Words.

   function Optimize_Dictionary
     (Base : in Natools.Smaz_256.Dictionary;
      Pending_Words : in Natools.Smaz_Tools.String_Lists.List;
      Input_Texts : in Natools.Smaz_Tools.String_Lists.List;
      Job_Count : in Natural;
      Method : in Methods.Enum)
     return Natools.Smaz_256.Dictionary;
      --  Optimize the dictionary on Input_Texts, starting with Base and
      --  adding substrings from Pending_Words.

   procedure Parallel_Evaluate_Dictionary
     (Job_Count : in Positive;
      Dict : in Natools.Smaz_256.Dictionary;
      Corpus : in Natools.Smaz_Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Tools_256.Dictionary_Counts);
      --  Return the same results as Natools.Smaz.Tools.Evaluate_Dictionary,
      --  but hopefully more quickly, using Job_Count tasks.

   procedure Print_Dictionary
     (Filename : in String;
      Dictionary : in Natools.Smaz_256.Dictionary;
      Hash_Package_Name : in String := "");
   procedure Print_Dictionary
     (Output : in Ada.Text_IO.File_Type;
      Dictionary : in Natools.Smaz_256.Dictionary;
      Hash_Package_Name : in String := "");
      --  print the given dictionary in the given file

   procedure Print_Help
     (Opt : in Getopt.Configuration;
      Output : in Ada.Text_IO.File_Type);
      --  Print the help text to the given file

   function To_Dictionary
     (Handler : in Callback'Class;
      Input : in Natools.Smaz_Tools.String_Lists.List)
     return Natools.Smaz_256.Dictionary;
      --  Convert the input into a dictionary given the option in Handler


   overriding procedure Option
     (Handler  : in out Callback;
      Id       : in Options.Id;
      Argument : in String) is
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            Handler.Max_Word_Size := Positive'Value (Argument);

         when Options.Job_Count =>
            Handler.Job_Count := Natural'Value (Argument);

         when Options.Filter_Threshold =>
            Handler.Filter_Threshold
              := Natools.Smaz.Tools.String_Count'Value (Argument);

         when Options.Score_Method =>
            Handler.Score_Method := Methods.Enum'Value (Argument);

         when Options.Max_Pending =>
            Handler.Max_Pending := Ada.Containers.Count_Type'Value (Argument);








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            Handler.Max_Word_Size := Positive'Value (Argument);

         when Options.Job_Count =>
            Handler.Job_Count := Natural'Value (Argument);

         when Options.Filter_Threshold =>
            Handler.Filter_Threshold
              := Natools.Smaz_Tools.String_Count'Value (Argument);

         when Options.Score_Method =>
            Handler.Score_Method := Methods.Enum'Value (Argument);

         when Options.Max_Pending =>
            Handler.Max_Pending := Ada.Containers.Count_Type'Value (Argument);

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            Handler.Vlen_Verbatim := False;
      end case;
   end Option;


   procedure Evaluate_Dictionary
     (Job_Count : in Natural;
      Dict : in Natools.Smaz.Dictionary;
      Corpus : in Natools.Smaz.Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Natools.Smaz.Tools.Dictionary_Counts)
   is
      Actual_Dict : Natools.Smaz.Dictionary := Dict;
   begin
      Natools.Smaz.Tools.Set_Dictionary_For_Trie_Search (Actual_Dict);

      Actual_Dict.Hash := Natools.Smaz.Tools.Trie_Search'Access;

      for I in Actual_Dict.Offsets'Range loop
         if Natools.Smaz.Tools.Trie_Search (Natools.Smaz.Dict_Entry
           (Actual_Dict, I)) /= Natural (I)
         then
            Ada.Text_IO.Put_Line
              (Ada.Text_IO.Current_Error,
               "Fail at" & Ada.Streams.Stream_Element'Image (I)
               & " -> " & Natools.String_Escapes.C_Escape_Hex
                  (Natools.Smaz.Dict_Entry (Actual_Dict, I), True)
               & " ->" & Natural'Image (Natools.Smaz.Tools.Trie_Search
                  (Natools.Smaz.Dict_Entry (Actual_Dict, I))));
         end if;
      end loop;

      if Job_Count > 0 then
         Parallel_Evaluate_Dictionary (Job_Count,
            Actual_Dict, Corpus, Compressed_Size, Counts);
      else
         Natools.Smaz.Tools.Evaluate_Dictionary
           (Actual_Dict, Corpus, Compressed_Size, Counts);
      end if;
   end Evaluate_Dictionary;


   function Getopt_Config return Getopt.Configuration is
      use Getopt;







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            Handler.Vlen_Verbatim := False;
      end case;
   end Option;


   procedure Evaluate_Dictionary
     (Job_Count : in Natural;
      Dict : in Natools.Smaz_256.Dictionary;
      Corpus : in Natools.Smaz_Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Tools_256.Dictionary_Counts)
   is
      Actual_Dict : Natools.Smaz_256.Dictionary := Dict;
   begin
      Natools.Smaz_Tools.Set_Dictionary_For_Trie_Search
        (Tools_256.To_String_List (Actual_Dict));
      Actual_Dict.Hash := Natools.Smaz_Tools.Trie_Search'Access;

      for I in Actual_Dict.Offsets'Range loop
         if Natools.Smaz_Tools.Trie_Search (Natools.Smaz_256.Dict_Entry
           (Actual_Dict, I)) /= Natural (I)
         then
            Ada.Text_IO.Put_Line
              (Ada.Text_IO.Current_Error,
               "Fail at" & Ada.Streams.Stream_Element'Image (I)
               & " -> " & Natools.String_Escapes.C_Escape_Hex
                  (Natools.Smaz_256.Dict_Entry (Actual_Dict, I), True)
               & " ->" & Natural'Image (Natools.Smaz_Tools.Trie_Search
                  (Natools.Smaz_256.Dict_Entry (Actual_Dict, I))));
         end if;
      end loop;

      if Job_Count > 0 then
         Parallel_Evaluate_Dictionary (Job_Count,
            Actual_Dict, Corpus, Compressed_Size, Counts);
      else
         Tools_256.Evaluate_Dictionary
           (Actual_Dict, Corpus, Compressed_Size, Counts);
      end if;
   end Evaluate_Dictionary;


   function Getopt_Config return Getopt.Configuration is
      use Getopt;
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      return R;
   end Getopt_Config;


   procedure Optimization_Round
     (Dict : in out Holders.Holder;
      Score : in out Ada.Streams.Stream_Element_Count;
      Counts : in out Natools.Smaz.Tools.Dictionary_Counts;
      Pending_Words : in out Natools.Smaz.Tools.String_Lists.List;
      Input_Texts : in Natools.Smaz.Tools.String_Lists.List;
      Job_Count : in Natural;
      Method : in Methods.Enum;
      Updated : out Boolean)
   is
      use type Ada.Streams.Stream_Element_Offset;

      New_Value : Ada.Strings.Unbounded.Unbounded_String;
      New_Position : Natools.Smaz.Tools.String_Lists.Cursor;
      Worst_Index : constant Ada.Streams.Stream_Element
        := Natools.Smaz.Tools.Worst_Index (Dict.Element, Counts, Method);
      Worst_Value : constant String
        := Natools.Smaz.Dict_Entry (Dict.Element, Worst_Index);
      Worst_Count : constant Natools.Smaz.Tools.String_Count
        := Counts (Worst_Index);
      Base : constant Natools.Smaz.Dictionary
        := Natools.Smaz.Tools.Remove_Element (Dict.Element, Worst_Index);
      Old_Score : constant Ada.Streams.Stream_Element_Count := Score;
   begin
      Updated := False;

      for Position in Pending_Words.Iterate loop
         declare
            Word : constant String
              := Natools.Smaz.Tools.String_Lists.Element (Position);
            New_Dict : constant Natools.Smaz.Dictionary
              := Natools.Smaz.Tools.Append_String (Base, Word);
            New_Score : Ada.Streams.Stream_Element_Count;
            New_Counts : Natools.Smaz.Tools.Dictionary_Counts;
         begin
            Evaluate_Dictionary
              (Job_Count, New_Dict, Input_Texts, New_Score, New_Counts);

            if New_Score < Score then
               Dict := Holders.To_Holder (New_Dict);
               Score := New_Score;







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      return R;
   end Getopt_Config;


   procedure Optimization_Round
     (Dict : in out Holders.Holder;
      Score : in out Ada.Streams.Stream_Element_Count;
      Counts : in out Tools_256.Dictionary_Counts;
      Pending_Words : in out Natools.Smaz_Tools.String_Lists.List;
      Input_Texts : in Natools.Smaz_Tools.String_Lists.List;
      Job_Count : in Natural;
      Method : in Methods.Enum;
      Updated : out Boolean)
   is
      use type Ada.Streams.Stream_Element_Offset;

      New_Value : Ada.Strings.Unbounded.Unbounded_String;
      New_Position : Natools.Smaz_Tools.String_Lists.Cursor;
      Worst_Index : constant Ada.Streams.Stream_Element
        := Tools_256.Worst_Index (Dict.Element, Counts, Method);
      Worst_Value : constant String
        := Natools.Smaz_256.Dict_Entry (Dict.Element, Worst_Index);
      Worst_Count : constant Natools.Smaz_Tools.String_Count
        := Counts (Worst_Index);
      Base : constant Natools.Smaz_256.Dictionary
        := Tools_256.Remove_Element (Dict.Element, Worst_Index);
      Old_Score : constant Ada.Streams.Stream_Element_Count := Score;
   begin
      Updated := False;

      for Position in Pending_Words.Iterate loop
         declare
            Word : constant String
              := Natools.Smaz_Tools.String_Lists.Element (Position);
            New_Dict : constant Natools.Smaz_256.Dictionary
              := Tools_256.Append_String (Base, Word);
            New_Score : Ada.Streams.Stream_Element_Count;
            New_Counts : Tools_256.Dictionary_Counts;
         begin
            Evaluate_Dictionary
              (Job_Count, New_Dict, Input_Texts, New_Score, New_Counts);

            if New_Score < Score then
               Dict := Holders.To_Holder (New_Dict);
               Score := New_Score;
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         Ada.Text_IO.Put_Line
           (Ada.Text_IO.Current_Error,
            "Removing"
            & Worst_Count'Img & "x "
            & Natools.String_Escapes.C_Escape_Hex (Worst_Value, True)
            & ", adding"
            & Counts (Dict.Element.Dict_Last)'Img & "x "
            & Natools.String_Escapes.C_Escape_Hex
               (Ada.Strings.Unbounded.To_String (New_Value), True)
            & ", size"
            & Score'Img
            & " ("
            & Ada.Streams.Stream_Element_Offset'Image (Score - Old_Score)
            & ')');
      end if;
   end Optimization_Round;


   function Optimize_Dictionary
     (Base : in Natools.Smaz.Dictionary;
      Pending_Words : in Natools.Smaz.Tools.String_Lists.List;
      Input_Texts : in Natools.Smaz.Tools.String_Lists.List;
      Job_Count : in Natural;
      Method : in Methods.Enum)
     return Natools.Smaz.Dictionary
   is
      Holder : Holders.Holder := Holders.To_Holder (Base);
      Pending : Natools.Smaz.Tools.String_Lists.List := Pending_Words;
      Score : Ada.Streams.Stream_Element_Count;
      Counts : Natools.Smaz.Tools.Dictionary_Counts;
      Running : Boolean := True;
   begin
      Evaluate_Dictionary (Job_Count, Base, Input_Texts, Score, Counts);

      while Running loop
         Optimization_Round
           (Holder,







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         Ada.Text_IO.Put_Line
           (Ada.Text_IO.Current_Error,
            "Removing"
            & Worst_Count'Img & "x "
            & Natools.String_Escapes.C_Escape_Hex (Worst_Value, True)
            & ", adding"
            & Counts (Dict.Element.Last_Code)'Img & "x "
            & Natools.String_Escapes.C_Escape_Hex
               (Ada.Strings.Unbounded.To_String (New_Value), True)
            & ", size"
            & Score'Img
            & " ("
            & Ada.Streams.Stream_Element_Offset'Image (Score - Old_Score)
            & ')');
      end if;
   end Optimization_Round;


   function Optimize_Dictionary
     (Base : in Natools.Smaz_256.Dictionary;
      Pending_Words : in Natools.Smaz_Tools.String_Lists.List;
      Input_Texts : in Natools.Smaz_Tools.String_Lists.List;
      Job_Count : in Natural;
      Method : in Methods.Enum)
     return Natools.Smaz_256.Dictionary
   is
      Holder : Holders.Holder := Holders.To_Holder (Base);
      Pending : Natools.Smaz_Tools.String_Lists.List := Pending_Words;
      Score : Ada.Streams.Stream_Element_Count;
      Counts : Tools_256.Dictionary_Counts;
      Running : Boolean := True;
   begin
      Evaluate_Dictionary (Job_Count, Base, Input_Texts, Score, Counts);

      while Running loop
         Optimization_Round
           (Holder,
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      return Holder.Element;
   end Optimize_Dictionary;


   procedure Parallel_Evaluate_Dictionary
     (Job_Count : in Positive;
      Dict : in Natools.Smaz.Dictionary;
      Corpus : in Natools.Smaz.Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Natools.Smaz.Tools.Dictionary_Counts)
   is
      package String_Lists renames Natools.Smaz.Tools.String_Lists;

      type Result_Values is record
         Compressed_Size : Ada.Streams.Stream_Element_Count;
         Counts : Natools.Smaz.Tools.Dictionary_Counts;
      end record;

      procedure Initialize (Result : in out Result_Values);

      procedure Get_Next_Job
        (Global : in out String_Lists.Cursor;
         Job : out String_Lists.Cursor;







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      return Holder.Element;
   end Optimize_Dictionary;


   procedure Parallel_Evaluate_Dictionary
     (Job_Count : in Positive;
      Dict : in Natools.Smaz_256.Dictionary;
      Corpus : in Natools.Smaz_Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Tools_256.Dictionary_Counts)
   is
      package String_Lists renames Natools.Smaz_Tools.String_Lists;

      type Result_Values is record
         Compressed_Size : Ada.Streams.Stream_Element_Count;
         Counts : Tools_256.Dictionary_Counts;
      end record;

      procedure Initialize (Result : in out Result_Values);

      procedure Get_Next_Job
        (Global : in out String_Lists.Cursor;
         Job : out String_Lists.Cursor;
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      end Get_Next_Job;


      procedure Do_Job
        (Result : in out Result_Values;
         Job : in String_Lists.Cursor) is
      begin
         Natools.Smaz.Tools.Evaluate_Dictionary_Partial
           (Dict,
            String_Lists.Element (Job),
            Result.Compressed_Size,
            Result.Counts);
      end Do_Job;


      procedure Gather_Result
        (Global : in out String_Lists.Cursor;
         Partial : in Result_Values)
      is
         pragma Unreferenced (Global);
         use type Ada.Streams.Stream_Element_Count;
         use type Natools.Smaz.Tools.String_Count;
      begin
         Compressed_Size := Compressed_Size + Partial.Compressed_Size;

         for I in Counts'Range loop
            Counts (I) := Counts (I) + Partial.Counts (I);
         end loop;
      end Gather_Result;







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      end Get_Next_Job;


      procedure Do_Job
        (Result : in out Result_Values;
         Job : in String_Lists.Cursor) is
      begin
         Tools_256.Evaluate_Dictionary_Partial
           (Dict,
            String_Lists.Element (Job),
            Result.Compressed_Size,
            Result.Counts);
      end Do_Job;


      procedure Gather_Result
        (Global : in out String_Lists.Cursor;
         Partial : in Result_Values)
      is
         pragma Unreferenced (Global);
         use type Ada.Streams.Stream_Element_Count;
         use type Natools.Smaz_Tools.String_Count;
      begin
         Compressed_Size := Compressed_Size + Partial.Compressed_Size;

         for I in Counts'Range loop
            Counts (I) := Counts (I) + Partial.Counts (I);
         end loop;
      end Gather_Result;
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      Counts := (others => 0);
      Parallel_Run (Cursor, Job_Count);
   end Parallel_Evaluate_Dictionary;


   procedure Print_Dictionary
     (Filename : in String;
      Dictionary : in Natools.Smaz.Dictionary;
      Hash_Package_Name : in String := "") is
   begin
      if Filename = "-" then
         Print_Dictionary
           (Ada.Text_IO.Current_Output, Dictionary, Hash_Package_Name);
      elsif Filename'Length > 0 then
         declare
            File : Ada.Text_IO.File_Type;
         begin
            Ada.Text_IO.Create (File, Name => Filename);
            Print_Dictionary (File, Dictionary, Hash_Package_Name);
            Ada.Text_IO.Close (File);
         end;
      end if;
   end Print_Dictionary;


   procedure Print_Dictionary
     (Output : in Ada.Text_IO.File_Type;
      Dictionary : in Natools.Smaz.Dictionary;
      Hash_Package_Name : in String := "")
   is
      procedure Put_Line (Line : in String);

      procedure Put_Line (Line : in String) is
      begin
         Ada.Text_IO.Put_Line (Output, Line);
      end Put_Line;

      procedure Print_Dictionary_In_Ada is
        new Natools.Smaz.Tools.Print_Dictionary_In_Ada (Put_Line);
   begin
      if Hash_Package_Name'Length > 0 then
         Print_Dictionary_In_Ada
           (Dictionary,
            Hash_Image => Hash_Package_Name & ".Hash'Access");
      else
         Print_Dictionary_In_Ada (Dictionary);







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      Counts := (others => 0);
      Parallel_Run (Cursor, Job_Count);
   end Parallel_Evaluate_Dictionary;


   procedure Print_Dictionary
     (Filename : in String;
      Dictionary : in Natools.Smaz_256.Dictionary;
      Hash_Package_Name : in String := "") is
   begin
      if Filename = "-" then
         Print_Dictionary
           (Ada.Text_IO.Current_Output, Dictionary, Hash_Package_Name);
      elsif Filename'Length > 0 then
         declare
            File : Ada.Text_IO.File_Type;
         begin
            Ada.Text_IO.Create (File, Name => Filename);
            Print_Dictionary (File, Dictionary, Hash_Package_Name);
            Ada.Text_IO.Close (File);
         end;
      end if;
   end Print_Dictionary;


   procedure Print_Dictionary
     (Output : in Ada.Text_IO.File_Type;
      Dictionary : in Natools.Smaz_256.Dictionary;
      Hash_Package_Name : in String := "")
   is
      procedure Put_Line (Line : in String);

      procedure Put_Line (Line : in String) is
      begin
         Ada.Text_IO.Put_Line (Output, Line);
      end Put_Line;

      procedure Print_Dictionary_In_Ada is
        new Tools_256.Print_Dictionary_In_Ada (Put_Line);
   begin
      if Hash_Package_Name'Length > 0 then
         Print_Dictionary_In_Ada
           (Dictionary,
            Hash_Image => Hash_Package_Name & ".Hash'Access");
      else
         Print_Dictionary_In_Ada (Dictionary);
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         end case;
      end loop;
   end Print_Help;


   function To_Dictionary
     (Handler : in Callback'Class;
      Input : in Natools.Smaz.Tools.String_Lists.List)
     return Natools.Smaz.Dictionary
   is
      use type Natools.Smaz.Tools.String_Count;
      use type Dict_Sources.Enum;
   begin
      case Handler.Dict_Source is
         when Dict_Sources.S_Expression =>
            return Natools.Smaz.Tools.To_Dictionary
              (Input,
               Handler.Vlen_Verbatim);

         when Dict_Sources.Text_List | Dict_Sources.Unoptimized_Text_List =>
            declare
               Counter : Natools.Smaz.Tools.Word_Counter;
            begin
               for S of Input loop
                  Natools.Smaz.Tools.Add_Substrings
                    (Counter, S, Handler.Min_Sub_Size, Handler.Max_Sub_Size);

                  if Handler.Max_Word_Size > Handler.Max_Sub_Size then
                     Natools.Smaz.Tools.Add_Words
                       (Counter, S,
                        Handler.Max_Sub_Size + 1, Handler.Max_Word_Size);
                  end if;
               end loop;

               if Handler.Filter_Threshold > 0 then
                  Natools.Smaz.Tools.Filter_By_Count
                    (Counter, Handler.Filter_Threshold);
               end if;

               if Handler.Dict_Source = Dict_Sources.Text_List then
                  declare
                     Selected, Pending : Natools.Smaz.Tools.String_Lists.List;
                  begin
                     Natools.Smaz.Tools.Simple_Dictionary_And_Pending
                       (Counter,
                        Handler.Dict_Size,
                        Selected,
                        Pending,
                        Handler.Score_Method,
                        Handler.Max_Pending);

                     return Optimize_Dictionary
                       (Natools.Smaz.Tools.To_Dictionary
                          (Selected, Handler.Vlen_Verbatim),
                        Pending,
                        Input,
                        Handler.Job_Count,
                        Handler.Score_Method);
                  end;
               else
                  return Natools.Smaz.Tools.To_Dictionary
                    (Natools.Smaz.Tools.Simple_Dictionary
                       (Counter, Handler.Dict_Size, Handler.Score_Method),
                     Handler.Vlen_Verbatim);
               end if;
            end;
      end case;
   end To_Dictionary;


   Opt_Config : constant Getopt.Configuration := Getopt_Config;
   Handler : Callback;
   Input_List, Input_Data : Natools.Smaz.Tools.String_Lists.List;
begin
   Process_Command_Line :
   begin
      Opt_Config.Process (Handler);
   exception
      when Getopt.Option_Error =>
         Print_Help (Opt_Config, Ada.Text_IO.Current_Error);







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         end case;
      end loop;
   end Print_Help;


   function To_Dictionary
     (Handler : in Callback'Class;
      Input : in Natools.Smaz_Tools.String_Lists.List)
     return Natools.Smaz_256.Dictionary
   is
      use type Natools.Smaz_Tools.String_Count;
      use type Dict_Sources.Enum;
   begin
      case Handler.Dict_Source is
         when Dict_Sources.S_Expression =>


            return Tools_256.To_Dictionary (Input, Handler.Vlen_Verbatim);

         when Dict_Sources.Text_List | Dict_Sources.Unoptimized_Text_List =>
            declare
               Counter : Natools.Smaz_Tools.Word_Counter;
            begin
               for S of Input loop
                  Natools.Smaz_Tools.Add_Substrings
                    (Counter, S, Handler.Min_Sub_Size, Handler.Max_Sub_Size);

                  if Handler.Max_Word_Size > Handler.Max_Sub_Size then
                     Natools.Smaz_Tools.Add_Words
                       (Counter, S,
                        Handler.Max_Sub_Size + 1, Handler.Max_Word_Size);
                  end if;
               end loop;

               if Handler.Filter_Threshold > 0 then
                  Natools.Smaz_Tools.Filter_By_Count
                    (Counter, Handler.Filter_Threshold);
               end if;

               if Handler.Dict_Source = Dict_Sources.Text_List then
                  declare
                     Selected, Pending : Natools.Smaz_Tools.String_Lists.List;
                  begin
                     Natools.Smaz_Tools.Simple_Dictionary_And_Pending
                       (Counter,
                        Handler.Dict_Size,
                        Selected,
                        Pending,
                        Handler.Score_Method,
                        Handler.Max_Pending);

                     return Optimize_Dictionary
                       (Tools_256.To_Dictionary
                          (Selected, Handler.Vlen_Verbatim),
                        Pending,
                        Input,
                        Handler.Job_Count,
                        Handler.Score_Method);
                  end;
               else
                  return Tools_256.To_Dictionary
                    (Natools.Smaz_Tools.Simple_Dictionary
                       (Counter, Handler.Dict_Size, Handler.Score_Method),
                     Handler.Vlen_Verbatim);
               end if;
            end;
      end case;
   end To_Dictionary;


   Opt_Config : constant Getopt.Configuration := Getopt_Config;
   Handler : Callback;
   Input_List, Input_Data : Natools.Smaz_Tools.String_Lists.List;
begin
   Process_Command_Line :
   begin
      Opt_Config.Process (Handler);
   exception
      when Getopt.Option_Error =>
         Print_Help (Opt_Config, Ada.Text_IO.Current_Error);
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      use type Actions.Enum;

      Input : constant access Ada.Streams.Root_Stream_Type'Class
        := Ada.Text_IO.Text_Streams.Stream (Ada.Text_IO.Current_Input);
      Parser : Natools.S_Expressions.Parsers.Stream_Parser (Input);
   begin
      Parser.Next;
      Natools.Smaz.Tools.Read_List (Input_List, Parser);

      if Handler.Action /= Actions.Nothing then
         Parser.Next;
         Natools.Smaz.Tools.Read_List (Input_Data, Parser);
      end if;
   end Read_Input_List;


   Build_Dictionary :
   declare
      Dictionary : Natools.Smaz.Dictionary
        := To_Dictionary (Handler, Input_List);
      Sx_Output : Natools.S_Expressions.Printers.Canonical
        (Ada.Text_IO.Text_Streams.Stream (Ada.Text_IO.Current_Output));
      Ada_Dictionary : constant String
        := Ada.Strings.Unbounded.To_String (Handler.Ada_Dictionary);
      Hash_Package : constant String
        := Ada.Strings.Unbounded.To_String (Handler.Hash_Package);
   begin
      Dictionary.Hash := Natools.Smaz.Tools.Linear_Search'Access;
      Natools.Smaz.Tools.List_For_Linear_Search := Input_List;

      if Ada_Dictionary'Length > 0 then
         Print_Dictionary (Ada_Dictionary, Dictionary, Hash_Package);
      end if;

      if Hash_Package'Length > 0 then
         Natools.Smaz.Tools.GNAT.Build_Perfect_Hash (Input_List, Hash_Package);
      end if;

      if Handler.Sx_Dict_Output then
         Sx_Output.Open_List;
         for I in Dictionary.Offsets'Range loop
            Sx_Output.Append_String
              (Natools.Smaz.Dict_Entry (Dictionary, I));
         end loop;
         Sx_Output.Close_List;
      end if;

      case Handler.Action is
         when Actions.Nothing => null;

         when Actions.Decode =>
            if Handler.Sx_Output then
               Sx_Output.Open_List;
               for S of Input_Data loop
                  Sx_Output.Append_String
                    (Natools.Smaz.Decompress (Dictionary, To_SEA (S)));
               end loop;
               Sx_Output.Close_List;
            end if;

            if Handler.Stat_Output then
               declare
                  procedure Print_Line (Original, Output : Natural);







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      use type Actions.Enum;

      Input : constant access Ada.Streams.Root_Stream_Type'Class
        := Ada.Text_IO.Text_Streams.Stream (Ada.Text_IO.Current_Input);
      Parser : Natools.S_Expressions.Parsers.Stream_Parser (Input);
   begin
      Parser.Next;
      Natools.Smaz_Tools.Read_List (Input_List, Parser);

      if Handler.Action /= Actions.Nothing then
         Parser.Next;
         Natools.Smaz_Tools.Read_List (Input_Data, Parser);
      end if;
   end Read_Input_List;


   Build_Dictionary :
   declare
      Dictionary : Natools.Smaz_256.Dictionary
        := To_Dictionary (Handler, Input_List);
      Sx_Output : Natools.S_Expressions.Printers.Canonical
        (Ada.Text_IO.Text_Streams.Stream (Ada.Text_IO.Current_Output));
      Ada_Dictionary : constant String
        := Ada.Strings.Unbounded.To_String (Handler.Ada_Dictionary);
      Hash_Package : constant String
        := Ada.Strings.Unbounded.To_String (Handler.Hash_Package);
   begin
      Dictionary.Hash := Natools.Smaz_Tools.Linear_Search'Access;
      Natools.Smaz_Tools.List_For_Linear_Search := Input_List;

      if Ada_Dictionary'Length > 0 then
         Print_Dictionary (Ada_Dictionary, Dictionary, Hash_Package);
      end if;

      if Hash_Package'Length > 0 then
         Natools.Smaz_Tools.GNAT.Build_Perfect_Hash (Input_List, Hash_Package);
      end if;

      if Handler.Sx_Dict_Output then
         Sx_Output.Open_List;
         for I in Dictionary.Offsets'Range loop
            Sx_Output.Append_String
              (Natools.Smaz_256.Dict_Entry (Dictionary, I));
         end loop;
         Sx_Output.Close_List;
      end if;

      case Handler.Action is
         when Actions.Nothing => null;

         when Actions.Decode =>
            if Handler.Sx_Output then
               Sx_Output.Open_List;
               for S of Input_Data loop
                  Sx_Output.Append_String
                    (Natools.Smaz_256.Decompress (Dictionary, To_SEA (S)));
               end loop;
               Sx_Output.Close_List;
            end if;

            if Handler.Stat_Output then
               declare
                  procedure Print_Line (Original, Output : Natural);
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                  Original_Total : Natural := 0;
                  Output_Total : Natural := 0;
               begin
                  for S of Input_Data loop
                     declare
                        Original_Size : constant Natural := S'Length;
                        Output_Size : constant Natural
                          := Natools.Smaz.Decompress
                             (Dictionary, To_SEA (S))'Length;
                     begin
                        Print_Line (Original_Size, Output_Size);
                        Original_Total := Original_Total + Original_Size;
                        Output_Total := Output_Total + Output_Size;
                     end;
                  end loop;

                  Print_Line (Original_Total, Output_Total);
               end;
            end if;

         when Actions.Encode =>
            if Handler.Sx_Output then
               Sx_Output.Open_List;
               for S of Input_Data loop
                  Sx_Output.Append_Atom
                    (Natools.Smaz.Compress (Dictionary, S));
               end loop;
               Sx_Output.Close_List;
            end if;

            if Handler.Stat_Output then
               declare
                  procedure Print_Line (Original, Output, Base64 : Natural);







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                  Original_Total : Natural := 0;
                  Output_Total : Natural := 0;
               begin
                  for S of Input_Data loop
                     declare
                        Original_Size : constant Natural := S'Length;
                        Output_Size : constant Natural
                          := Natools.Smaz_256.Decompress
                             (Dictionary, To_SEA (S))'Length;
                     begin
                        Print_Line (Original_Size, Output_Size);
                        Original_Total := Original_Total + Original_Size;
                        Output_Total := Output_Total + Output_Size;
                     end;
                  end loop;

                  Print_Line (Original_Total, Output_Total);
               end;
            end if;

         when Actions.Encode =>
            if Handler.Sx_Output then
               Sx_Output.Open_List;
               for S of Input_Data loop
                  Sx_Output.Append_Atom
                    (Natools.Smaz_256.Compress (Dictionary, S));
               end loop;
               Sx_Output.Close_List;
            end if;

            if Handler.Stat_Output then
               declare
                  procedure Print_Line (Original, Output, Base64 : Natural);
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                  Output_Total : Natural := 0;
                  Base64_Total : Natural := 0;
               begin
                  for S of Input_Data loop
                     declare
                        Original_Size : constant Natural := S'Length;
                        Output_Size : constant Natural
                          := Natools.Smaz.Compress (Dictionary, S)'Length;
                        Base64_Size : constant Natural
                          := ((Output_Size + 2) / 3) * 4;
                     begin
                        Print_Line (Original_Size, Output_Size, Base64_Size);
                        Original_Total := Original_Total + Original_Size;
                        Output_Total := Output_Total + Output_Size;
                        Base64_Total := Base64_Total + Base64_Size;
                     end;
                  end loop;

                  Print_Line (Original_Total, Output_Total, Base64_Total);
               end;
            end if;

         when Actions.Evaluate =>
            declare
               Total_Size : Ada.Streams.Stream_Element_Count;
               Counts : Natools.Smaz.Tools.Dictionary_Counts;
            begin
               Evaluate_Dictionary (Handler.Job_Count,
                  Dictionary, Input_Data, Total_Size, Counts);

               if Handler.Sx_Output then
                  Sx_Output.Open_List;
                  Sx_Output.Append_String (Ada.Strings.Fixed.Trim
                    (Ada.Streams.Stream_Element_Count'Image (Total_Size),
                     Ada.Strings.Both));

                  for E in Dictionary.Offsets'Range loop
                     Sx_Output.Open_List;
                     Sx_Output.Append_Atom ((0 => E));
                     Sx_Output.Append_String
                       (Natools.Smaz.Dict_Entry (Dictionary, E));
                     Sx_Output.Append_String (Ada.Strings.Fixed.Trim
                       (Natools.Smaz.Tools.String_Count'Image (Counts (E)),
                        Ada.Strings.Both));
                     Sx_Output.Close_List;
                  end loop;
                  Sx_Output.Close_List;
               end if;

               if Handler.Stat_Output then
                  declare
                     procedure Print
                       (Label : in String;
                        E : in Ada.Streams.Stream_Element;
                        Score : in Natools.Smaz.Tools.Score_Value);

                     procedure Print_Min_Max
                       (Label : in String;
                        Score : not null access function
                          (D : in Natools.Smaz.Dictionary;
                           C : in Natools.Smaz.Tools.Dictionary_Counts;
                           E : in Ada.Streams.Stream_Element)
                          return Natools.Smaz.Tools.Score_Value);

                     procedure Print_Value
                       (Label : in String;
                        Score : not null access function
                          (D : in Natools.Smaz.Dictionary;
                           C : in Natools.Smaz.Tools.Dictionary_Counts;
                           E : in Ada.Streams.Stream_Element)
                          return Natools.Smaz.Tools.Score_Value;
                        Ref : in Natools.Smaz.Tools.Score_Value);


                     procedure Print
                       (Label : in String;
                        E : in Ada.Streams.Stream_Element;
                        Score : in Natools.Smaz.Tools.Score_Value) is
                     begin
                        if Handler.Sx_Output then
                           Sx_Output.Open_List;
                           Sx_Output.Append_Atom ((0 => E));
                           Sx_Output.Append_String
                             (Natools.Smaz.Dict_Entry (Dictionary, E));
                           Sx_Output.Append_String (Ada.Strings.Fixed.Trim
                             (Score'Img, Ada.Strings.Both));
                           Sx_Output.Close_List;
                        else
                           Ada.Text_IO.Put_Line
                             (Label
                              & Ada.Characters.Latin_1.HT
                              & Ada.Streams.Stream_Element'Image (E)
                              & Ada.Characters.Latin_1.HT
                              & Natools.String_Escapes.C_Escape_Hex
                                (Natools.Smaz.Dict_Entry (Dictionary, E), True)

                              & Ada.Characters.Latin_1.HT
                              & Score'Img);
                        end if;
                     end Print;

                     procedure Print_Min_Max
                       (Label : in String;
                        Score : not null access function
                          (D : in Natools.Smaz.Dictionary;
                           C : in Natools.Smaz.Tools.Dictionary_Counts;
                           E : in Ada.Streams.Stream_Element)
                          return Natools.Smaz.Tools.Score_Value)
                     is
                        use type Natools.Smaz.Tools.Score_Value;
                        Min_Score, Max_Score : Natools.Smaz.Tools.Score_Value
                          := Score (Dictionary, Counts, 0);
                        S : Natools.Smaz.Tools.Score_Value;
                     begin
                        for E in 1 .. Dictionary.Dict_Last loop
                           S := Score (Dictionary, Counts, E);
                           if S < Min_Score then
                              Min_Score := S;
                           end if;
                           if S > Max_Score then
                              Max_Score := S;
                           end if;
                        end loop;

                        Print_Value ("best-" & Label, Score, Max_Score);
                        Print_Value ("worst-" & Label, Score, Min_Score);
                     end Print_Min_Max;

                     procedure Print_Value
                       (Label : in String;
                        Score : not null access function
                          (D : in Natools.Smaz.Dictionary;
                           C : in Natools.Smaz.Tools.Dictionary_Counts;
                           E : in Ada.Streams.Stream_Element)
                          return Natools.Smaz.Tools.Score_Value;
                        Ref : in Natools.Smaz.Tools.Score_Value)
                     is
                        use type Natools.Smaz.Tools.Score_Value;
                     begin
                        if Handler.Sx_Output then
                           Sx_Output.Open_List;
                           Sx_Output.Append_String (Label);
                        end if;

                        for E in Dictionary.Offsets'Range loop
                           if Score (Dictionary, Counts, E) = Ref then
                              Print (Label, E, Ref);
                           end if;
                        end loop;

                        if Handler.Sx_Output then
                           Sx_Output.Close_List;
                        end if;
                     end Print_Value;
                  begin
                     Print_Min_Max ("encoded",
                       Natools.Smaz.Tools.Score_Encoded'Access);
                     Print_Min_Max ("frequency",
                       Natools.Smaz.Tools.Score_Frequency'Access);
                     Print_Min_Max ("gain",
                       Natools.Smaz.Tools.Score_Gain'Access);
                  end;
               end if;
            end;
      end case;
   end Build_Dictionary;
end Smaz;







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                  Output_Total : Natural := 0;
                  Base64_Total : Natural := 0;
               begin
                  for S of Input_Data loop
                     declare
                        Original_Size : constant Natural := S'Length;
                        Output_Size : constant Natural
                          := Natools.Smaz_256.Compress (Dictionary, S)'Length;
                        Base64_Size : constant Natural
                          := ((Output_Size + 2) / 3) * 4;
                     begin
                        Print_Line (Original_Size, Output_Size, Base64_Size);
                        Original_Total := Original_Total + Original_Size;
                        Output_Total := Output_Total + Output_Size;
                        Base64_Total := Base64_Total + Base64_Size;
                     end;
                  end loop;

                  Print_Line (Original_Total, Output_Total, Base64_Total);
               end;
            end if;

         when Actions.Evaluate =>
            declare
               Total_Size : Ada.Streams.Stream_Element_Count;
               Counts : Tools_256.Dictionary_Counts;
            begin
               Evaluate_Dictionary (Handler.Job_Count,
                  Dictionary, Input_Data, Total_Size, Counts);

               if Handler.Sx_Output then
                  Sx_Output.Open_List;
                  Sx_Output.Append_String (Ada.Strings.Fixed.Trim
                    (Ada.Streams.Stream_Element_Count'Image (Total_Size),
                     Ada.Strings.Both));

                  for E in Dictionary.Offsets'Range loop
                     Sx_Output.Open_List;
                     Sx_Output.Append_Atom ((0 => E));
                     Sx_Output.Append_String
                       (Natools.Smaz_256.Dict_Entry (Dictionary, E));
                     Sx_Output.Append_String (Ada.Strings.Fixed.Trim
                       (Natools.Smaz_Tools.String_Count'Image (Counts (E)),
                        Ada.Strings.Both));
                     Sx_Output.Close_List;
                  end loop;
                  Sx_Output.Close_List;
               end if;

               if Handler.Stat_Output then
                  declare
                     procedure Print
                       (Label : in String;
                        E : in Ada.Streams.Stream_Element;
                        Score : in Natools.Smaz_Tools.Score_Value);

                     procedure Print_Min_Max
                       (Label : in String;
                        Score : not null access function
                          (D : in Natools.Smaz_256.Dictionary;
                           C : in Tools_256.Dictionary_Counts;
                           E : in Ada.Streams.Stream_Element)
                          return Natools.Smaz_Tools.Score_Value);

                     procedure Print_Value
                       (Label : in String;
                        Score : not null access function
                          (D : in Natools.Smaz_256.Dictionary;
                           C : in Tools_256.Dictionary_Counts;
                           E : in Ada.Streams.Stream_Element)
                          return Natools.Smaz_Tools.Score_Value;
                        Ref : in Natools.Smaz_Tools.Score_Value);


                     procedure Print
                       (Label : in String;
                        E : in Ada.Streams.Stream_Element;
                        Score : in Natools.Smaz_Tools.Score_Value) is
                     begin
                        if Handler.Sx_Output then
                           Sx_Output.Open_List;
                           Sx_Output.Append_Atom ((0 => E));
                           Sx_Output.Append_String
                             (Natools.Smaz_256.Dict_Entry (Dictionary, E));
                           Sx_Output.Append_String (Ada.Strings.Fixed.Trim
                             (Score'Img, Ada.Strings.Both));
                           Sx_Output.Close_List;
                        else
                           Ada.Text_IO.Put_Line
                             (Label
                              & Ada.Characters.Latin_1.HT
                              & Ada.Streams.Stream_Element'Image (E)
                              & Ada.Characters.Latin_1.HT
                              & Natools.String_Escapes.C_Escape_Hex
                                (Natools.Smaz_256.Dict_Entry (Dictionary, E),
                                 True)
                              & Ada.Characters.Latin_1.HT
                              & Score'Img);
                        end if;
                     end Print;

                     procedure Print_Min_Max
                       (Label : in String;
                        Score : not null access function
                          (D : in Natools.Smaz_256.Dictionary;
                           C : in Tools_256.Dictionary_Counts;
                           E : in Ada.Streams.Stream_Element)
                          return Natools.Smaz_Tools.Score_Value)
                     is
                        use type Natools.Smaz_Tools.Score_Value;
                        Min_Score, Max_Score : Natools.Smaz_Tools.Score_Value
                          := Score (Dictionary, Counts, 0);
                        S : Natools.Smaz_Tools.Score_Value;
                     begin
                        for E in 1 .. Dictionary.Last_Code loop
                           S := Score (Dictionary, Counts, E);
                           if S < Min_Score then
                              Min_Score := S;
                           end if;
                           if S > Max_Score then
                              Max_Score := S;
                           end if;
                        end loop;

                        Print_Value ("best-" & Label, Score, Max_Score);
                        Print_Value ("worst-" & Label, Score, Min_Score);
                     end Print_Min_Max;

                     procedure Print_Value
                       (Label : in String;
                        Score : not null access function
                          (D : in Natools.Smaz_256.Dictionary;
                           C : in Tools_256.Dictionary_Counts;
                           E : in Ada.Streams.Stream_Element)
                          return Natools.Smaz_Tools.Score_Value;
                        Ref : in Natools.Smaz_Tools.Score_Value)
                     is
                        use type Natools.Smaz_Tools.Score_Value;
                     begin
                        if Handler.Sx_Output then
                           Sx_Output.Open_List;
                           Sx_Output.Append_String (Label);
                        end if;

                        for E in Dictionary.Offsets'Range loop
                           if Score (Dictionary, Counts, E) = Ref then
                              Print (Label, E, Ref);
                           end if;
                        end loop;

                        if Handler.Sx_Output then
                           Sx_Output.Close_List;
                        end if;
                     end Print_Value;
                  begin
                     Print_Min_Max ("encoded",
                       Tools_256.Score_Encoded'Access);
                     Print_Min_Max ("frequency",
                       Tools_256.Score_Frequency'Access);
                     Print_Min_Max ("gain",
                       Tools_256.Score_Gain'Access);
                  end;
               end if;
            end;
      end case;
   end Build_Dictionary;
end Smaz;