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) 2010-2021, 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
32with Ada.Wide_Wide_Characters.Unicode; use Ada.Wide_Wide_Characters.Unicode;
33
34package 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
228end Ada.Wide_Wide_Characters.Handling;
229