gcc/ada/s-casuti.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                     S Y S T E M . C A S E _ U T I L                      --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                     Copyright (C) 1995-2008, AdaCore                     --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 pragma Compiler_Unit;
  35
  36 package body System.Case_Util is
  37
  38    --------------
  39    -- To_Lower --
  40    --------------
  41
  42    function To_Lower (A : Character) return Character is
  43       A_Val : constant Natural := Character'Pos (A);
  44
  45    begin
  46       if A in 'A' .. 'Z'
  47         or else A_Val in 16#C0# .. 16#D6#
  48         or else A_Val in 16#D8# .. 16#DE#
  49       then
  50          return Character'Val (A_Val + 16#20#);
  51       else
  52          return A;
  53       end if;
  54    end To_Lower;
  55
  56    procedure To_Lower (A : in out String) is
  57    begin
  58       for J in A'Range loop
  59          A (J) := To_Lower (A (J));
  60       end loop;
  61    end To_Lower;
  62
  63    --------------
  64    -- To_Mixed --
  65    --------------
  66
  67    procedure To_Mixed (A : in out String) is
  68       Ucase : Boolean := True;
  69
  70    begin
  71       for J in A'Range loop
  72          if Ucase then
  73             A (J) := To_Upper (A (J));
  74          else
  75             A (J) := To_Lower (A (J));
  76          end if;
  77
  78          Ucase := A (J) = '_';
  79       end loop;
  80    end To_Mixed;
  81
  82    --------------
  83    -- To_Upper --
  84    --------------
  85
  86    function To_Upper (A : Character) return Character is
  87       A_Val : constant Natural := Character'Pos (A);
  88
  89    begin
  90       if A in 'a' .. 'z'
  91         or else A_Val in 16#E0# .. 16#F6#
  92         or else A_Val in 16#F8# .. 16#FE#
  93       then
  94          return Character'Val (A_Val - 16#20#);
  95       else
  96          return A;
  97       end if;
  98    end To_Upper;
  99
 100    procedure To_Upper (A : in out String) is
 101    begin
 102       for J in A'Range loop
 103          A (J) := To_Upper (A (J));
 104       end loop;
 105    end To_Upper;
 106
 107 end System.Case_Util;