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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- G N A T K R --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2013, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Gnatvsn;
with Krunch;
with Switch; use Switch;
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Command_Line; use Ada.Command_Line;
with System.IO; use System.IO;
procedure Gnatkr is
pragma Ident (Gnatvsn.Gnat_Static_Version_String);
Count : Natural;
Maxlen : Integer;
Exit_Program : exception;
function Get_Maximum_File_Name_Length return Integer;
pragma Import (C, Get_Maximum_File_Name_Length,
"__gnat_get_maximum_file_name_length");
procedure Usage;
-- Output usage information
-----------
-- Usage --
-----------
procedure Usage is
begin
Put_Line ("Usage: gnatkr filename[.extension] [krunch-count]");
end Usage;
procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage);
begin
Check_Version_And_Help ("GNATKR", "1992");
Count := Argument_Count;
if Count < 1 or else Count > 2 then
Usage;
raise Exit_Program;
else
-- If the length (krunch-count) argument is omitted use the system
-- default if there is one, otherwise use 8.
if Count = 1 then
Maxlen := Get_Maximum_File_Name_Length;
if Maxlen = -1 then
Maxlen := 8;
end if;
else
Maxlen := 0;
for J in Argument (2)'Range loop
if Argument (2) (J) /= ' ' then
if Argument (2) (J) not in '0' .. '9' then
Put_Line ("Illegal argument for krunch-count");
raise Exit_Program;
else
Maxlen := Maxlen * 10 +
Character'Pos (Argument (2) (J)) - Character'Pos ('0');
end if;
end if;
end loop;
-- Zero means crunch only system files
if Maxlen = 0 then
Maxlen := Natural'Last;
end if;
end if;
declare
Fname : String := Argument (1);
Klen : Natural := Fname'Length;
Extp : Boolean := False;
-- True if extension is present
Ext : Natural := 0;
-- If extension is present, points to it (init to prevent warning)
begin
-- Remove extension if present (an extension is defined as the
-- section of the file name after the last dot in the name. If
-- there is no dot in the name, then
-- name is all lower case and contains no other instances of dots)
for J in reverse 1 .. Klen loop
if Fname (J) = '.' then
Extp := True;
Ext := J;
Klen := J - 1;
exit;
end if;
end loop;
-- Fold to lower case and replace dots by dashes
for J in 1 .. Klen loop
Fname (J) := To_Lower (Fname (J));
if Fname (J) = '.' then
Fname (J) := '-';
end if;
end loop;
Krunch (Fname, Klen, Maxlen, False);
Put (Fname (1 .. Klen));
if Extp then
Put (Fname (Ext .. Fname'Length));
end if;
New_Line;
end;
end if;
Set_Exit_Status (Success);
exception
when Exit_Program =>
Set_Exit_Status (Failure);
end Gnatkr;
|
