139 lines
4.8 KiB
Ada
139 lines
4.8 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- G N A T K R --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1992-2003 Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with Ada.Characters.Handling; use Ada.Characters.Handling;
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with Ada.Command_Line; use Ada.Command_Line;
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with Gnatvsn;
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with Krunch;
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with System.IO; use System.IO;
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procedure Gnatkr is
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pragma Ident (Gnatvsn.Gnat_Static_Version_String);
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Count : Natural;
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Maxlen : Integer;
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Exit_Program : exception;
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function Get_Maximum_File_Name_Length return Integer;
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pragma Import (C, Get_Maximum_File_Name_Length,
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"__gnat_get_maximum_file_name_length");
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begin
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Count := Argument_Count;
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if Count < 1 or else Count > 2 then
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Put_Line ("Usage: gnatkr filename[.extension] [krunch-count]");
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raise Exit_Program;
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else
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-- If the length (krunch-count) argument is omitted use the system
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-- default if there is one, otherwise use 8.
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if Count = 1 then
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Maxlen := Get_Maximum_File_Name_Length;
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if Maxlen = -1 then
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Maxlen := 8;
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end if;
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else
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Maxlen := 0;
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for J in Argument (2)'Range loop
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if Argument (2) (J) /= ' ' then
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if Argument (2) (J) not in '0' .. '9' then
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Put_Line ("Illegal argument for krunch-count");
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raise Exit_Program;
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else
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Maxlen := Maxlen * 10 +
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Character'Pos (Argument (2) (J)) - Character'Pos ('0');
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end if;
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end if;
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end loop;
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-- Zero means crunch only system files
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if Maxlen = 0 then
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Maxlen := Natural'Last;
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end if;
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end if;
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declare
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Fname : String := Argument (1);
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Klen : Natural := Fname'Length;
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Extp : Boolean := False;
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-- True if extension is present
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Ext : Natural := 0;
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-- If extension is present, points to it (init to prevent warning)
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begin
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-- Remove extension if present (an extension is defined as the
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-- section of the file name after the last dot in the name. If
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-- there is no dot in the name, then
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-- name is all lower case and contains no other instances of dots)
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for J in reverse 1 .. Klen loop
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if Fname (J) = '.' then
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Extp := True;
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Ext := J;
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Klen := J - 1;
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exit;
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end if;
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end loop;
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-- Fold to lower case and replace dots by dashes
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for J in 1 .. Klen loop
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Fname (J) := To_Lower (Fname (J));
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if Fname (J) = '.' then
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Fname (J) := '-';
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end if;
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end loop;
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Krunch (Fname, Klen, Maxlen, False);
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Put (Fname (1 .. Klen));
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if Extp then
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Put (Fname (Ext .. Fname'Length));
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end if;
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New_Line;
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end;
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end if;
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Set_Exit_Status (Success);
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exception
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when Exit_Program =>
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Set_Exit_Status (Failure);
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end Gnatkr;
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