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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [gnatkr.adb] - Blame information for rev 706

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1 706 jeremybenn
------------------------------------------------------------------------------
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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) 1992-2007, 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 3,  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 COPYING3.  If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license.          --
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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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