gcc/ada/g-casuti.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --                       G N A T . C A S E _ U T I L                        --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.1 $
  10 --                                                                          --
  11 --           Copyright (C) 1995-1999 Ada Core Technologies, Inc.            --
  12 --                                                                          --
  13 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com).   --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 package body GNAT.Case_Util is
  36
  37    --------------
  38    -- To_Lower --
  39    --------------
  40
  41    function To_Lower (A : Character) return Character is
  42       A_Val : constant Natural := Character'Pos (A);
  43
  44    begin
  45       if A in 'A' .. 'Z'
  46         or else A_Val in 16#C0# .. 16#D6#
  47         or else A_Val in 16#D8# .. 16#DE#
  48       then
  49          return Character'Val (A_Val + 16#20#);
  50       else
  51          return A;
  52       end if;
  53    end To_Lower;
  54
  55    procedure To_Lower (A : in out String) is
  56    begin
  57       for J in A'Range loop
  58          A (J) := To_Lower (A (J));
  59       end loop;
  60    end To_Lower;
  61
  62    --------------
  63    -- To_Mixed --
  64    --------------
  65
  66    procedure To_Mixed (A : in out String) is
  67       Ucase : Boolean := True;
  68
  69    begin
  70       for J in A'Range loop
  71          if Ucase then
  72             A (J) := To_Upper (A (J));
  73          else
  74             A (J) := To_Lower (A (J));
  75          end if;
  76
  77          Ucase := A (J) = '_';
  78       end loop;
  79    end To_Mixed;
  80
  81    --------------
  82    -- To_Upper --
  83    --------------
  84
  85    function To_Upper (A : Character) return Character is
  86       A_Val : constant Natural := Character'Pos (A);
  87
  88    begin
  89       if A in 'a' .. 'z'
  90         or else A_Val in 16#E0# .. 16#F6#
  91         or else A_Val in 16#F8# .. 16#FE#
  92       then
  93          return Character'Val (A_Val - 16#20#);
  94       else
  95          return A;
  96       end if;
  97    end To_Upper;
  98
  99    procedure To_Upper (A : in out String) is
 100    begin
 101       for J in A'Range loop
 102          A (J) := To_Upper (A (J));
 103       end loop;
 104    end To_Upper;
 105
 106 end GNAT.Case_Util;