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) 1995-2007, 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 Warnings (Off);
  35 pragma Compiler_Unit;
  36 pragma Warnings (On);
  37
  38 package body System.Case_Util is
  39
  40    --------------
  41    -- To_Lower --
  42    --------------
  43
  44    function To_Lower (A : Character) return Character is
  45       A_Val : constant Natural := Character'Pos (A);
  46
  47    begin
  48       if A in 'A' .. 'Z'
  49         or else A_Val in 16#C0# .. 16#D6#
  50         or else A_Val in 16#D8# .. 16#DE#
  51       then
  52          return Character'Val (A_Val + 16#20#);
  53       else
  54          return A;
  55       end if;
  56    end To_Lower;
  57
  58    procedure To_Lower (A : in out String) is
  59    begin
  60       for J in A'Range loop
  61          A (J) := To_Lower (A (J));
  62       end loop;
  63    end To_Lower;
  64
  65    --------------
  66    -- To_Mixed --
  67    --------------
  68
  69    procedure To_Mixed (A : in out String) is
  70       Ucase : Boolean := True;
  71
  72    begin
  73       for J in A'Range loop
  74          if Ucase then
  75             A (J) := To_Upper (A (J));
  76          else
  77             A (J) := To_Lower (A (J));
  78          end if;
  79
  80          Ucase := A (J) = '_';
  81       end loop;
  82    end To_Mixed;
  83
  84    --------------
  85    -- To_Upper --
  86    --------------
  87
  88    function To_Upper (A : Character) return Character is
  89       A_Val : constant Natural := Character'Pos (A);
  90
  91    begin
  92       if A in 'a' .. 'z'
  93         or else A_Val in 16#E0# .. 16#F6#
  94         or else A_Val in 16#F8# .. 16#FE#
  95       then
  96          return Character'Val (A_Val - 16#20#);
  97       else
  98          return A;
  99       end if;
 100    end To_Upper;
 101
 102    procedure To_Upper (A : in out String) is
 103    begin
 104       for J in A'Range loop
 105          A (J) := To_Upper (A (J));
 106       end loop;
 107    end To_Upper;
 108
 109 end System.Case_Util;