1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
-----------------------------------------------------------------------
-- XML/Ada - An XML suite for Ada95 --
-- --
-- Copyright (C) 2001-2002 --
-- ACT-Europe --
-- --
-- This library is free software; you can redistribute it and/or --
-- modify it under the terms of the GNU General Public --
-- License as published by the Free Software Foundation; either --
-- version 2 of the License, or (at your option) any later version. --
-- --
-- This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public --
-- License along with this library; if not, write to the --
-- Free Software Foundation, Inc., 59 Temple Place - Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from --
-- this unit, or you link this unit with other files to produce an --
-- executable, this unit does not by itself cause the resulting --
-- executable to be covered by the GNU General Public License. This --
-- exception does not however invalidate any other reasons why the --
-- executable file might be covered by the GNU Public License. --
-----------------------------------------------------------------------
-- This is the root of the hierarchy that provides coded character sets.
-- These CCS can be used to convert from any encoding (like Iso/Latin-1)
-- to Unicode.
-- See http://www.isoc.org:8080/codage/iso8859/jeuxiso.en.htm for a list
-- of the ISO 8859-* character sets
package Unicode.CCS is
-- Each of the child package shall have two public functions with
-- the following profile:
-- function Convert (Char : Unicode_Char) return Unicode_Char
-- that converts from a code point representing an abstract character in
-- the specific encoding to the code point for the same character in
-- Unicode, or reverse
type Conversion_Function is access
function (Char : Unicode_Char) return Unicode_Char;
type Character_Set is record
To_Unicode : Conversion_Function;
To_CS : Conversion_Function;
end record;
--------------------
-- Character sets --
--------------------
function Get_Character_Set (Name : String) return Character_Set;
-- Get the character set associated with a given name
-- The valid names are given in the packages Unicode.CCS.*.
-- Unknown_Character_Set is raised if Name is not found.
function Identity (Char : Unicode_Char) return Unicode_Char;
-- return its parameter directly.
Unicode_Character_Set : constant Character_Set :=
(To_Unicode => Identity'Access,
To_Cs => Identity'Access);
Invalid_Code : exception;
-- Exception raised when trying to convert to a code point that
-- is not available in the specific character set. This can never be
-- raised when converting to Unicode, since it is universal by definition.
Unknown_Character_Set : exception;
-- Raised by Get_Conversion or Get_Revert_Conversion when the name is
-- unknown.
end Unicode.CCS;
|
