gcc/ada/libgnat/a-zchhan.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --    A D A . W I D E _ W I D E _ C H A R A C T E R S . H A N D L I N G     --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2010-2024, Free Software Foundation, Inc.         --
  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 3,  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.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 with Ada.Wide_Wide_Characters.Unicode; use Ada.Wide_Wide_Characters.Unicode;
  33
  34 package body Ada.Wide_Wide_Characters.Handling is
  35
  36    ---------------------------
  37    -- Character_Set_Version --
  38    ---------------------------
  39
  40    function Character_Set_Version return String is
  41    begin
  42       return "Unicode 4.0";
  43    end Character_Set_Version;
  44
  45    ---------------------
  46    -- Is_Alphanumeric --
  47    ---------------------
  48
  49    function Is_Alphanumeric (Item : Wide_Wide_Character) return Boolean is
  50    begin
  51       return Is_Letter (Item) or else Is_Digit (Item);
  52    end Is_Alphanumeric;
  53
  54    --------------
  55    -- Is_Basic --
  56    --------------
  57
  58    function Is_Basic (Item : Wide_Wide_Character) return Boolean
  59      renames Ada.Wide_Wide_Characters.Unicode.Is_Basic;
  60
  61    ----------------
  62    -- Is_Control --
  63    ----------------
  64
  65    function Is_Control (Item : Wide_Wide_Character) return Boolean is
  66    begin
  67       return Get_Category (Item) = Cc;
  68    end Is_Control;
  69
  70    --------------
  71    -- Is_Digit --
  72    --------------
  73
  74    function Is_Digit (Item : Wide_Wide_Character) return Boolean
  75      renames Ada.Wide_Wide_Characters.Unicode.Is_Digit;
  76
  77    ----------------
  78    -- Is_Graphic --
  79    ----------------
  80
  81    function Is_Graphic (Item : Wide_Wide_Character) return Boolean is
  82    begin
  83       return not Is_Non_Graphic (Item);
  84    end Is_Graphic;
  85
  86    --------------------------
  87    -- Is_Hexadecimal_Digit --
  88    --------------------------
  89
  90    function Is_Hexadecimal_Digit (Item : Wide_Wide_Character) return Boolean is
  91    begin
  92       return Is_Digit (Item)
  93         or else Item in 'A' .. 'F'
  94         or else Item in 'a' .. 'f';
  95    end Is_Hexadecimal_Digit;
  96
  97    ---------------
  98    -- Is_Letter --
  99    ---------------
 100
 101    function Is_Letter (Item : Wide_Wide_Character) return Boolean
 102      renames Ada.Wide_Wide_Characters.Unicode.Is_Letter;
 103
 104    ------------------------
 105    -- Is_Line_Terminator --
 106    ------------------------
 107
 108    function Is_Line_Terminator (Item : Wide_Wide_Character) return Boolean
 109      renames Ada.Wide_Wide_Characters.Unicode.Is_Line_Terminator;
 110
 111    --------------
 112    -- Is_Lower --
 113    --------------
 114
 115    function Is_Lower (Item : Wide_Wide_Character) return Boolean is
 116    begin
 117       return Get_Category (Item) = Ll;
 118    end Is_Lower;
 119
 120    -------------
 121    -- Is_Mark --
 122    -------------
 123
 124    function Is_Mark (Item : Wide_Wide_Character) return Boolean
 125      renames Ada.Wide_Wide_Characters.Unicode.Is_Mark;
 126
 127    -------------
 128    -- Is_NFKC --
 129    -------------
 130
 131    function Is_NFKC (Item : Wide_Wide_Character) return Boolean
 132      renames Ada.Wide_Wide_Characters.Unicode.Is_NFKC;
 133
 134    ---------------------
 135    -- Is_Other_Format --
 136    ---------------------
 137
 138    function Is_Other_Format (Item : Wide_Wide_Character) return Boolean
 139      renames Ada.Wide_Wide_Characters.Unicode.Is_Other;
 140
 141    ------------------------------
 142    -- Is_Punctuation_Connector --
 143    ------------------------------
 144
 145    function Is_Punctuation_Connector
 146      (Item : Wide_Wide_Character) return Boolean
 147      renames Ada.Wide_Wide_Characters.Unicode.Is_Punctuation;
 148
 149    --------------
 150    -- Is_Space --
 151    --------------
 152
 153    function Is_Space (Item : Wide_Wide_Character) return Boolean
 154      renames Ada.Wide_Wide_Characters.Unicode.Is_Space;
 155
 156    ----------------
 157    -- Is_Special --
 158    ----------------
 159
 160    function Is_Special (Item : Wide_Wide_Character) return Boolean is
 161    begin
 162       return Is_Graphic (Item) and then not Is_Alphanumeric (Item);
 163    end Is_Special;
 164
 165    --------------
 166    -- Is_Upper --
 167    --------------
 168
 169    function Is_Upper (Item : Wide_Wide_Character) return Boolean is
 170    begin
 171       return Get_Category (Item) = Lu;
 172    end Is_Upper;
 173
 174    --------------
 175    -- To_Lower --
 176    --------------
 177
 178    function To_Lower (Item : Wide_Wide_Character) return Wide_Wide_Character
 179      renames Ada.Wide_Wide_Characters.Unicode.To_Lower_Case;
 180
 181    function To_Lower (Item : Wide_Wide_String) return Wide_Wide_String is
 182       Result : Wide_Wide_String (Item'Range);
 183
 184    begin
 185       for J in Result'Range loop
 186          Result (J) := To_Lower (Item (J));
 187       end loop;
 188
 189       return Result;
 190    end To_Lower;
 191
 192    --------------
 193    -- To_Upper --
 194    --------------
 195
 196    function To_Upper (Item : Wide_Wide_Character) return Wide_Wide_Character
 197      renames Ada.Wide_Wide_Characters.Unicode.To_Upper_Case;
 198
 199    function To_Upper (Item : Wide_Wide_String) return Wide_Wide_String is
 200       Result : Wide_Wide_String (Item'Range);
 201
 202    begin
 203       for J in Result'Range loop
 204          Result (J) := To_Upper (Item (J));
 205       end loop;
 206
 207       return Result;
 208    end To_Upper;
 209
 210    --------------
 211    -- To_Basic --
 212    --------------
 213
 214    function To_Basic (Item : Wide_Wide_Character) return Wide_Wide_Character
 215      renames Ada.Wide_Wide_Characters.Unicode.To_Basic;
 216
 217    function To_Basic (Item : Wide_Wide_String) return Wide_Wide_String is
 218       Result : Wide_Wide_String (Item'Range);
 219
 220    begin
 221       for J in Result'Range loop
 222          Result (J) := To_Basic (Item (J));
 223       end loop;
 224
 225       return Result;
 226    end To_Basic;
 227
 228 end Ada.Wide_Wide_Characters.Handling;