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-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. --
------------------------------------------------------------------------------
------------------------------------------------------------------------------
-- Command Line Interface for primitives in Natools.Smaz.Tools. --
------------------------------------------------------------------------------
with Ada.Characters.Latin_1;
with Ada.Command_Line;
with Ada.Streams;
with Ada.Strings.Unbounded;
with Ada.Text_IO.Text_Streams;
with Natools.Getopt_Long;
with Natools.S_Expressions.Parsers;
with Natools.S_Expressions.Printers;
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end Actions;
package Options is
type Id is
(Output_Ada_Dictionary,
Encode,
Output_Hash,
Help);
Help,
Stat_Output,
No_Stat_Output,
Sx_Output,
No_Sx_Output);
end Options;
package Getopt is new Natools.Getopt_Long (Options.Id);
type Callback is new Getopt.Handlers.Callback with record
Display_Help : Boolean := False;
Need_Dictionary : Boolean := False;
Stat_Output : Boolean := False;
Sx_Output : Boolean := False;
Action : Actions.Enum := Actions.Nothing;
Ada_Dictionary : Ada.Strings.Unbounded.Unbounded_String;
Hash_Package : Ada.Strings.Unbounded.Unbounded_String;
end record;
overriding procedure Option
(Handler : in out Callback;
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case Id is
when Options.Help =>
Handler.Display_Help := True;
when Options.Encode =>
Handler.Need_Dictionary := True;
Handler.Action := Actions.Encode;
when Options.No_Stat_Output =>
Handler.Stat_Output := False;
when Options.No_Sx_Output =>
Handler.Sx_Output := False;
when Options.Output_Ada_Dictionary =>
Handler.Need_Dictionary := True;
if Argument'Length > 0 then
Handler.Ada_Dictionary
:= Ada.Strings.Unbounded.To_Unbounded_String (Argument);
else
Handler.Ada_Dictionary
:= Ada.Strings.Unbounded.To_Unbounded_String ("-");
end if;
when Options.Output_Hash =>
Handler.Need_Dictionary := True;
Handler.Hash_Package
:= Ada.Strings.Unbounded.To_Unbounded_String (Argument);
when Options.Stat_Output =>
Handler.Stat_Output := True;
when Options.Sx_Output =>
Handler.Sx_Output := True;
end case;
end Option;
function Getopt_Config return Getopt.Configuration is
use Getopt;
use Options;
R : Getopt.Configuration;
begin
R.Add_Option ("ada-dict", 'A', Optional_Argument, Output_Ada_Dictionary);
R.Add_Option ("encode", 'e', No_Argument, Encode);
R.Add_Option ("help", 'h', No_Argument, Help);
R.Add_Option ("hash-pkg", 'H', Required_Argument, Output_Hash);
R.Add_Option ("stats", 's', No_Argument, Stat_Output);
R.Add_Option ("no-stats", 'S', No_Argument, No_Stat_Output);
R.Add_Option ("help", 'h', No_Argument, Help);
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 Print_Dictionary
(Filename : in String;
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& "Display this help text");
when Options.Encode =>
New_Line (Output);
Put_Line (Output, Indent & Indent
& "Read a list of strings and encode them");
when Options.No_Stat_Output =>
New_Line (Output);
Put_Line (Output, Indent & Indent
& "Do not output filter statistics");
when Options.No_Sx_Output =>
New_Line (Output);
Put_Line (Output, Indent & Indent
& "Do not output filtered results in a S-expression");
when Options.Output_Ada_Dictionary =>
Put_Line (Output, "=[filename]");
Put_Line (Output, Indent & Indent
& "Output the current dictionary as Ada code in the given");
Put_Line (Output, Indent & Indent
& "file, or standard output if filename is ""-""");
when Options.Output_Hash =>
Put_Line (Output, " <Hash Package Name>");
Put_Line (Output, Indent & Indent
& "Build a package with a perfect hash function for the");
Put_Line (Output, Indent & Indent
& "current dictionary.");
when Options.Stat_Output =>
New_Line (Output);
Put_Line (Output, Indent & Indent
& "Output filter statistics");
when Options.Sx_Output =>
New_Line (Output);
Put_Line (Output, Indent & Indent
& "Output filtered results in a S-expression");
end case;
end loop;
end Print_Help;
Opt_Config : constant Getopt.Configuration := Getopt_Config;
Handler : Callback;
Input_List, Input_Data : Natools.Smaz.Tools.String_Lists.List;
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if Handler.Display_Help then
Print_Help (Opt_Config, Ada.Text_IO.Current_Output);
end if;
if not Handler.Need_Dictionary then
return;
end if;
if not (Handler.Stat_Output or Handler.Sx_Output) then
Handler.Sx_Output := True;
end if;
Read_Input_List :
declare
use type Actions.Enum;
Input : constant access Ada.Streams.Root_Stream_Type'Class
:= Ada.Text_IO.Text_Streams.Stream (Ada.Text_IO.Current_Input);
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end Read_Input_List;
Build_Dictionary :
declare
Dictionary : Natools.Smaz.Dictionary
:= Natools.Smaz.Tools.To_Dictionary (Input_List, True);
Output : Natools.S_Expressions.Printers.Canonical
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;
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Natools.Smaz.Tools.GNAT.Build_Perfect_Hash (Input_List, Hash_Package);
end if;
case Handler.Action is
when Actions.Nothing => null;
when Actions.Encode =>
if Handler.Sx_Output then
Output.Open_List;
for S of Input_Data loop
Output.Append_Atom (Natools.Smaz.Compress (Dictionary, S));
end loop;
Output.Close_List;
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);
procedure Print_Line (Original, Output, Base64 : Natural) is
begin
Ada.Text_IO.Put_Line
(Natural'Image (Original)
& Ada.Characters.Latin_1.HT
& Natural'Image (Output)
& Ada.Characters.Latin_1.HT
& Natural'Image (Base64)
& Ada.Characters.Latin_1.HT
& Float'Image (Float (Output) / Float (Original))
& Ada.Characters.Latin_1.HT
& Float'Image (Float (Base64) / Float (Original)));
end Print_Line;
Original_Total : Natural := 0;
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;
end case;
end Build_Dictionary;
end Smaz;
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