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------------------------------------------------------------------------------
-- Command Line Interface for primitives in Natools.Smaz.Tools.             --
------------------------------------------------------------------------------

with Ada.Characters.Latin_1;
with Ada.Command_Line;

with Ada.Streams;
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 Actions is
      type Enum is
        (Nothing,
         Decode,
         Encode,
         Evaluate);
   end Actions;

   package Dict_Sources is
      type Enum is
        (S_Expression,
         Text_List);

   end Dict_Sources;

   package Options is
      type Id is
        (Output_Ada_Dict,
         Dictionary_Input,
         Decode,
         Encode,
         Evaluate,
         Filter_Threshold,
         Output_Hash,
         Job_Count,
         Help,
         Sx_Dict_Output,
         Min_Sub_Size,
         Max_Sub_Size,
         Stat_Output,
         No_Stat_Output,
         Text_List_Input,

         Max_Word_Size,
         Sx_Output,
         No_Sx_Output);
   end Options;

   package Getopt is new Natools.Getopt_Long (Options.Id);








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------------------------------------------------------------------------------
-- Command Line Interface for primitives in Natools.Smaz.Tools.             --
------------------------------------------------------------------------------

with Ada.Characters.Latin_1;
with Ada.Command_Line;
with Ada.Containers.Indefinite_Holders;
with Ada.Streams;
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 Actions is
      type Enum is
        (Nothing,
         Decode,
         Encode,
         Evaluate);
   end Actions;

   package Dict_Sources is
      type Enum is
        (S_Expression,
         Text_List,
         Unoptimized_Text_List);
   end Dict_Sources;

   package Options is
      type Id is
        (Output_Ada_Dict,
         Dictionary_Input,
         Decode,
         Encode,
         Evaluate,
         Filter_Threshold,
         Output_Hash,
         Job_Count,
         Help,
         Sx_Dict_Output,
         Min_Sub_Size,
         Max_Sub_Size,
         Stat_Output,
         No_Stat_Output,
         Text_List_Input,
         Fast_Text_Input,
         Max_Word_Size,
         Sx_Output,
         No_Sx_Output);
   end Options;

   package Getopt is new Natools.Getopt_Long (Options.Id);

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      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 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,







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      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;
      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)
     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,
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         when Options.Dictionary_Input =>
            Handler.Dict_Source := Dict_Sources.S_Expression;

         when Options.Text_List_Input =>
            Handler.Dict_Source := Dict_Sources.Text_List;




         when Options.Sx_Dict_Output =>
            Handler.Need_Dictionary := True;
            Handler.Sx_Dict_Output := True;

         when Options.Min_Sub_Size =>
            Handler.Min_Sub_Size := Positive'Value (Argument);








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         when Options.Dictionary_Input =>
            Handler.Dict_Source := Dict_Sources.S_Expression;

         when Options.Text_List_Input =>
            Handler.Dict_Source := Dict_Sources.Text_List;

         when Options.Fast_Text_Input =>
            Handler.Dict_Source := Dict_Sources.Unoptimized_Text_List;

         when Options.Sx_Dict_Output =>
            Handler.Need_Dictionary := True;
            Handler.Sx_Dict_Output := True;

         when Options.Min_Sub_Size =>
            Handler.Min_Sub_Size := Positive'Value (Argument);

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      R.Add_Option ("jobs",          'j', Required_Argument, Job_Count);
      R.Add_Option ("sx-dict",       'L', No_Argument,       Sx_Dict_Output);
      R.Add_Option ("min-substring", 'm', Required_Argument, Min_Sub_Size);
      R.Add_Option ("max-substring", 'M', Required_Argument, Max_Sub_Size);
      R.Add_Option ("stats",         's', No_Argument,       Stat_Output);
      R.Add_Option ("no-stats",      'S', No_Argument,       No_Stat_Output);
      R.Add_Option ("text-list",     't', No_Argument,       Text_List_Input);

      R.Add_Option ("max-word-len",  'W', Required_Argument, Max_Word_Size);
      R.Add_Option ("s-expr",        'x', No_Argument,       Sx_Output);
      R.Add_Option ("no-s-expr",     'X', No_Argument,       No_Sx_Output);

      return R;
   end Getopt_Config;




















































   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)







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      R.Add_Option ("jobs",          'j', Required_Argument, Job_Count);
      R.Add_Option ("sx-dict",       'L', No_Argument,       Sx_Dict_Output);
      R.Add_Option ("min-substring", 'm', Required_Argument, Min_Sub_Size);
      R.Add_Option ("max-substring", 'M', Required_Argument, Max_Sub_Size);
      R.Add_Option ("stats",         's', No_Argument,       Stat_Output);
      R.Add_Option ("no-stats",      'S', No_Argument,       No_Stat_Output);
      R.Add_Option ("text-list",     't', No_Argument,       Text_List_Input);
      R.Add_Option ("fast-text-list", 'T', No_Argument,       Fast_Text_Input);
      R.Add_Option ("max-word-len",  'W', Required_Argument, Max_Word_Size);
      R.Add_Option ("s-expr",        'x', No_Argument,       Sx_Output);
      R.Add_Option ("no-s-expr",     'X', No_Argument,       No_Sx_Output);

      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;
      Updated : out Boolean)
   is
      pragma Unreferenced (Dict);
      pragma Unreferenced (Score);
      pragma Unreferenced (Counts);
      pragma Unreferenced (Pending_Words);
      pragma Unreferenced (Input_Texts);
      pragma Unreferenced (Job_Count);
   begin
      Updated := False;
   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)
     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,
            Score,
            Counts,
            Pending,
            Input_Texts,
            Job_Count,
            Running);
      end loop;

      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)
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            when Options.Text_List_Input =>
               New_Line (Output);
               Put_Line (Output, Indent & Indent
                 & "Compute dictionary from sample texts"
                 & " in input S-expression");







            when Options.Sx_Dict_Output =>
               New_Line (Output);
               Put_Line (Output, Indent & Indent
                 & "Output the dictionary as a S-expression");

            when Options.Min_Sub_Size =>
               New_Line (Output);







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            when Options.Text_List_Input =>
               New_Line (Output);
               Put_Line (Output, Indent & Indent
                 & "Compute dictionary from sample texts"
                 & " in input S-expression");

            when Options.Fast_Text_Input =>
               New_Line (Output);
               Put_Line (Output, Indent & Indent
                 & "Compute dictionary from sample texts"
                 & " in input S-expression, without optimization");

            when Options.Sx_Dict_Output =>
               New_Line (Output);
               Put_Line (Output, Indent & Indent
                 & "Output the dictionary as a S-expression");

            when Options.Min_Sub_Size =>
               New_Line (Output);
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               Put_Line (Output, Indent & Indent
                 & "Before building a dictionary from substrings, remove");
               Put_Line (Output, Indent & Indent
                 & "substrings whose count is below the threshold.");
         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;

   begin
      case Handler.Dict_Source is
         when Dict_Sources.S_Expression =>
            return Natools.Smaz.Tools.To_Dictionary (Input, True);

         when Dict_Sources.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;















               return Natools.Smaz.Tools.To_Dictionary
                 (Natools.Smaz.Tools.Simple_Dictionary (Counter, 254),
                  True);

            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;







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               Put_Line (Output, Indent & Indent
                 & "Before building a dictionary from substrings, remove");
               Put_Line (Output, Indent & Indent
                 & "substrings whose count is below the threshold.");
         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, True);

         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, 254, Selected, Pending);

                     return Optimize_Dictionary
                       (Natools.Smaz.Tools.To_Dictionary (Selected, True),
                        Pending,
                        Input,
                        Handler.Job_Count);
                  end;
               else
                  return Natools.Smaz.Tools.To_Dictionary
                    (Natools.Smaz.Tools.Simple_Dictionary (Counter, 254),
                     True);
               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;