1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . W C H _ C O N --
9 -- Copyright (C) 2005-2007, Free Software Foundation, Inc. --
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. --
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. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 pragma Warnings
(Off
);
38 package body System
.WCh_Con
is
40 ----------------------------
41 -- Get_WC_Encoding_Method --
42 ----------------------------
44 function Get_WC_Encoding_Method
(C
: Character) return WC_Encoding_Method
is
46 for Method
in WC_Encoding_Method
loop
47 if C
= WC_Encoding_Letters
(Method
) then
52 raise Constraint_Error
;
53 end Get_WC_Encoding_Method
;
55 function Get_WC_Encoding_Method
(S
: String) return WC_Encoding_Method
is
59 elsif S
= "upper" then
61 elsif S
= "shift_jis" then
62 return WCEM_Shift_JIS
;
67 elsif S
= "brackets" then
70 raise Constraint_Error
;
72 end Get_WC_Encoding_Method
;
74 --------------------------
75 -- Is_Start_Of_Encoding --
76 --------------------------
78 function Is_Start_Of_Encoding
80 EM
: WC_Encoding_Method
) return Boolean
83 return (EM
in WC_Upper_Half_Encoding_Method
84 and then Character'Pos (C
) >= 16#
80#
)
85 or else (EM
in WC_ESC_Encoding_Method
and then C
= ASCII
.ESC
);
86 end Is_Start_Of_Encoding
;