From: Marius Amado Alves <amado.alves@netcabo.pt>
To: comp.lang.ada@ada-france.org
Subject: Ada bench : count words
Date: Tue, 22 Mar 2005 01:16:09 +0000
Date: 2005-03-22T01:16:09+00:00 [thread overview]
Message-ID: <mailman.47.1111454204.23655.comp.lang.ada@ada-france.org> (raw)
In-Reply-To: <423f5813$0$9224$9b4e6d93@newsread4.arcor-online.net>
I took a shot at the count-words benchmark, a program to count lines,
words and characters. The Ada program currently published there is
broken. My program is correct and portable but:
- the speed is circa 1/3 of the GCC C version
- it fails to comply with the requirement that the input be taken from
standard input. To implement buffering, I have resorted to
Ada.Direct_IO, which I think cannot apply to standard input.
Can you help with any of these points? Thanks. The complete program
follows.
-- Count words in Ada for the language shootout
-- by Marius Amado Alves
with Ada.Characters.Handling;
with Ada.Characters.Latin_1;
with Ada.Command_Line;
with Ada.Direct_IO;
with Ada.Strings.Fixed;
with Ada.Text_IO;
procedure Count_Words is
use Ada.Characters.Handling;
use Ada.Characters.Latin_1;
use Ada.Command_Line;
Filename : String := Argument (1);
Buffer_Size : constant := 4096;
EOF : Character := FS;
EOL : String := (1 => LF);
Lines : Natural := 0;
Words : Natural := 0;
Total : Natural := 0;
In_Word : Boolean := False;
function Is_Separator (C : Character) return Boolean is
begin
return Is_Control (C) or C = ' ';
end;
procedure Start_Word is
begin
In_Word := True;
end;
procedure Finish_Word is
begin
Words := Words + 1;
In_Word := False;
end;
procedure Process (S : in String) is
begin
Lines := Lines + Ada.Strings.Fixed.Count (S, EOL);
for I in S'Range loop
if Is_Separator (S (I)) then
if In_Word then Finish_Word; end if;
else
if not In_Word then Start_Word; end if;
end if;
end loop;
end;
begin
declare
package Character_IO is new Ada.Direct_IO (Character);
use Character_IO;
File : File_Type;
begin
Open (File, In_File, Filename);
Total := Natural (Size (File));
Close (File);
end;
declare
subtype Buffer_Type is String (1 .. Buffer_Size);
package Buffer_IO is new Ada.Direct_IO (Buffer_Type);
use Buffer_IO;
File : File_Type;
S : Buffer_Type;
begin
Open (File, In_File, Filename);
for I in 1 .. Total / Buffer_Size loop
Read (File, S);
Process (S);
end loop;
Close (File);
end;
declare
subtype Rest_Type is String (1 .. Total rem Buffer_Size);
package Character_IO is new Ada.Direct_IO (Character);
use Character_IO;
File : File_Type;
S : Rest_Type;
begin
Open (File, In_File, Filename);
Set_Index (File, Count (Total - S'Length));
for I in 1 .. S'Length loop
Read (File, S (I));
end loop;
Close (File);
Process (S);
end;
if In_Word then Finish_Word; end if;
Ada.Text_IO.Put_Line
(Natural'Image (Lines) &
Natural'Image (Words) &
Natural'Image (Total));
end;
next prev parent reply other threads:[~2005-03-22 1:16 UTC|newest]
Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-19 16:22 Ada bench Pascal Obry
2005-03-19 16:55 ` Dr. Adrian Wrigley
2005-03-19 21:32 ` Michael Bode
2005-03-20 9:20 ` Pascal Obry
2005-03-20 9:39 ` Michael Bode
2005-03-20 11:16 ` Pascal Obry
2005-03-20 12:20 ` Dmitry A. Kazakov
2005-03-20 12:32 ` Pascal Obry
2005-03-21 1:42 ` (see below)
2005-03-21 2:24 ` (see below)
2005-03-21 15:00 ` (see below)
2005-03-21 3:54 ` Ed Falis
2005-03-21 12:20 ` Jeff C
2005-03-21 15:18 ` (see below)
2005-03-21 15:24 ` (see below)
2005-03-21 18:56 ` Isaac Gouy
2005-03-21 21:31 ` Randy Brukardt
2005-03-21 22:14 ` Ed Falis
2005-03-21 18:07 ` Pascal Obry
2005-03-20 10:11 ` Adrian Knoth
2005-03-20 10:30 ` Michael Bode
2005-03-21 23:27 ` Georg Bauhaus
2005-03-22 1:16 ` Marius Amado Alves [this message]
2005-03-22 10:59 ` Ada bench : count words Dmitry A. Kazakov
2005-03-22 11:57 ` Marius Amado Alves
2005-03-22 12:17 ` Dmitry A. Kazakov
2005-03-22 12:47 ` Marius Amado Alves
2005-03-22 13:08 ` Dmitry A. Kazakov
2005-03-22 13:28 ` Marius Amado Alves
2005-03-22 16:48 ` Marius Amado Alves
2005-03-22 17:34 ` Dmitry A. Kazakov
2005-03-27 20:14 ` jtg
2005-03-27 21:22 ` Dmitry A. Kazakov
2005-03-28 19:54 ` jtg
2005-03-28 20:56 ` Dmitry A. Kazakov
2005-03-29 12:40 ` jtg
2005-03-29 13:00 ` [OT] " Tapio Kelloniemi
2005-03-29 13:47 ` Dmitry A. Kazakov
2005-03-29 15:53 ` Tapio Kelloniemi
2005-03-29 16:17 ` Dmitry A. Kazakov
[not found] ` <k33j419lgei1ui89s26o1dlr9ccf1qe1hd@4ax.com>
2005-04-11 23:04 ` Marius Amado Alves
2005-03-29 13:47 ` Dmitry A. Kazakov
2005-04-01 20:58 ` Georg Bauhaus
2005-04-01 20:18 ` Pascal Obry
2005-03-22 12:53 ` Marius Amado Alves
[not found] ` <f205219321dd18dba878fab16b7cb50d@netcabo.pt>
2005-03-22 13:12 ` Marius Amado Alves
2005-03-23 16:58 ` Isaac Gouy
2005-03-22 13:58 ` Robert A Duff
2005-03-22 16:30 ` Marius Amado Alves
2005-03-22 16:41 ` Tapio Kelloniemi
2005-03-22 17:39 ` Marius Amado Alves
2005-03-22 18:59 ` Dmitry A. Kazakov
2005-03-22 19:08 ` Tapio Kelloniemi
2005-03-22 18:34 ` Georg Bauhaus
2005-03-22 19:32 ` Robert A Duff
2005-03-22 20:04 ` tmoran
2005-03-23 16:55 ` Isaac Gouy
[not found] ` <1820eab50b57f2fe1c4e8e50bb0f4fe5@netcabo.pt>
2005-03-22 22:49 ` Stephen Leake
2005-03-22 22:58 ` Robert A Duff
2005-03-22 23:27 ` Larry Kilgallen
2005-03-23 22:33 ` Robert A Duff
2005-03-24 5:02 ` Larry Kilgallen
[not found] ` <wccpsxqro0c.fsfOrganization: LJK Software <bM40pHW6P2KW@eisner.encompasserve.org>
2005-03-25 1:34 ` Robert A Duff
2005-03-22 12:22 ` Jeff C
2005-03-23 16:48 ` Isaac Gouy
2005-03-23 17:06 ` Isaac Gouy
2005-03-22 19:49 ` tmoran
2005-03-22 21:51 ` Dmitry A. Kazakov
2005-03-23 0:16 ` tmoran
2005-03-23 7:25 ` Dmitry A. Kazakov
2005-03-22 22:33 ` Marius Amado Alves
[not found] ` <00b362390273e6c04844dd4ff1885ee0@netcabo.pt>
2005-03-23 15:09 ` Marius Amado Alves
2005-03-23 19:00 ` tmoran
2005-03-23 19:30 ` tmoran
2005-03-23 21:38 ` tmoran
2005-03-25 7:30 ` Simon Wright
2005-03-25 9:38 ` tmoran
2005-03-25 16:20 ` Tapio Kelloniemi
2005-03-25 22:18 ` Ada:The High Performance Language for Hyperthreaded and Multicore CPUs; was " tmoran
2005-03-23 19:54 ` Tapio Kelloniemi
2005-03-23 20:39 ` Ada bench : word frequency Marius Amado Alves
2005-03-23 21:26 ` Isaac Gouy
2005-03-24 1:24 ` Marius Amado Alves
2005-03-24 17:23 ` Isaac Gouy
2005-03-24 19:52 ` Martin Dowie
2005-04-11 15:11 ` Marius Amado Alves
2005-03-24 20:16 ` Pascal Obry
2005-03-24 22:54 ` tmoran
2005-04-11 15:38 ` Marius Amado Alves
2005-03-24 21:18 ` Gautier Write-only
2005-04-11 15:32 ` Marius Amado Alves
2005-04-11 23:56 ` Robert A Duff
2005-04-28 4:04 ` Matthew Heaney
2005-04-28 20:40 ` Matthew Heaney
2005-03-23 21:38 ` Ada bench : count words tmoran
2005-03-24 20:19 ` tmoran
2005-03-24 21:00 ` Pascal Obry
2005-03-24 22:54 ` tmoran
2005-03-30 16:08 ` Andre
2005-03-30 16:36 ` Pascal Obry
2005-03-22 22:27 ` Dmitry A. Kazakov
2005-03-23 7:46 ` Pascal Obry
2005-03-23 7:56 ` Dmitry A. Kazakov
2005-03-23 13:38 ` Robert A Duff
2005-03-22 7:05 ` Ada bench Pascal Obry
2005-04-07 20:59 ` David Sauvage
2005-04-07 23:40 ` David Sauvage
2005-04-08 17:11 ` Pascal Obry
2005-04-08 17:39 ` tmoran
2005-04-08 18:49 ` David Sauvage
2005-04-18 19:14 ` David Sauvage
2005-04-19 16:43 ` Matthew Heaney
2005-04-19 23:22 ` David Sauvage
2005-04-20 0:49 ` Matthew Heaney
2005-04-20 4:22 ` Georg Bauhaus
2005-04-20 21:24 ` David Sauvage
2005-04-20 23:06 ` Georg Bauhaus
2005-04-20 9:41 ` Pascal Obry
2005-04-20 11:44 ` Matthew Heaney
2005-04-20 14:47 ` Pascal Obry
2005-04-20 19:26 ` Georg Bauhaus
2005-04-20 19:34 ` Pascal Obry
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