------------------------------------------------------------------------------
-- Copyright (c) 2016, Natacha Porté --
-- --
-- Permission to use, copy, modify, and distribute this software for any --
-- purpose with or without fee is hereby granted, provided that the above --
-- copyright notice and this permission notice appear in all copies. --
-- --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF --
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR --
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES --
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN --
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF --
-- 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;
with Natools.Smaz.Tools;
with Natools.Smaz.Tools.GNAT;
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);
end Actions;
package Options is
type Id is
(Output_Ada_Dictionary,
Decode,
Encode,
Output_Hash,
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;
Id : in Options.Id;
Argument : in String);
overriding procedure Argument
(Handler : in out Callback;
Argument : in String)
is null;
function Getopt_Config return Getopt.Configuration;
-- Build the configuration object
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
overriding procedure Option
(Handler : in out Callback;
Id : in Options.Id;
Argument : in String) is
begin
case Id is
when Options.Help =>
Handler.Display_Help := True;
when Options.Decode =>
Handler.Need_Dictionary := True;
Handler.Action := Actions.Decode;
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 ("decode", 'd', No_Argument, Decode);
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 ("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;
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);
end if;
end Print_Dictionary;
procedure Print_Help
(Opt : in Getopt.Configuration;
Output : in Ada.Text_IO.File_Type)
is
use Ada.Text_IO;
Indent : constant String := " ";
begin
Put_Line (Output, "Usage:");
for Id in Options.Id loop
Put (Output, Indent & Opt.Format_Names (Id));
case Id is
when Options.Help =>
New_Line (Output);
Put_Line (Output, Indent & Indent
& "Display this help text");
when Options.Decode =>
New_Line (Output);
Put_Line (Output, Indent & Indent
& "Read a list of strings and decode them");
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;
begin
Process_Command_Line :
begin
Opt_Config.Process (Handler);
exception
when Getopt.Option_Error =>
Print_Help (Opt_Config, Ada.Text_IO.Current_Error);
Ada.Command_Line.Set_Exit_Status (Ada.Command_Line.Failure);
return;
end Process_Command_Line;
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);
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
:= Natools.Smaz.Tools.To_Dictionary (Input_List, True);
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;
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);
procedure Print_Line (Original, Output : Natural) is
begin
Ada.Text_IO.Put_Line
(Natural'Image (Original)
& Ada.Characters.Latin_1.HT
& Natural'Image (Output)
& Ada.Characters.Latin_1.HT
& Float'Image (Float (Original) / Float (Output)));
end Print_Line;
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);
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;