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1------------------------------------------------------------------------------
2-- --
3-- GNAT COMPILER COMPONENTS --
4-- --
5-- S Y S T E M . W C H _ C O N --
6-- --
7-- B o d y --
8-- --
4b490c1e 9-- Copyright (C) 2005-2020, Free Software Foundation, Inc. --
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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- --
748086b7 13-- ware Foundation; either version 3, or (at your option) any later ver- --
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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 --
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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/>. --
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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
e917e3b8 32pragma Compiler_Unit_Warning;
2d9ea47f 33
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34package body System.WCh_Con is
35
36 ----------------------------
37 -- Get_WC_Encoding_Method --
38 ----------------------------
39
40 function Get_WC_Encoding_Method (C : Character) return WC_Encoding_Method is
41 begin
42 for Method in WC_Encoding_Method loop
43 if C = WC_Encoding_Letters (Method) then
44 return Method;
45 end if;
46 end loop;
47
48 raise Constraint_Error;
49 end Get_WC_Encoding_Method;
50
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51 function Get_WC_Encoding_Method (S : String) return WC_Encoding_Method is
52 begin
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53 if S = "hex" then
54 return WCEM_Hex;
55 elsif S = "upper" then
56 return WCEM_Upper;
57 elsif S = "shift_jis" then
58 return WCEM_Shift_JIS;
59 elsif S = "euc" then
60 return WCEM_EUC;
61 elsif S = "utf8" then
62 return WCEM_UTF8;
63 elsif S = "brackets" then
64 return WCEM_Brackets;
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65 else
66 raise Constraint_Error;
67 end if;
68 end Get_WC_Encoding_Method;
69
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70 --------------------------
71 -- Is_Start_Of_Encoding --
72 --------------------------
73
74 function Is_Start_Of_Encoding
75 (C : Character;
76 EM : WC_Encoding_Method) return Boolean
77 is
78 begin
79 return (EM in WC_Upper_Half_Encoding_Method
80 and then Character'Pos (C) >= 16#80#)
81 or else (EM in WC_ESC_Encoding_Method and then C = ASCII.ESC);
82 end Is_Start_Of_Encoding;
83
6f301919 84end System.WCh_Con;