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-----------------------------------------------------------------------
-- 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. --
-----------------------------------------------------------------------
with Unicode; use Unicode;
with Unicode.CES; use Unicode.CES;
with Unicode.CES.Utf32; use Unicode.CES.Utf32;
with Unicode.CES.Utf16; use Unicode.CES.Utf16;
with Unicode.CES.Utf8; use Unicode.CES.Utf8;
package body Input_Sources.Strings is
----------
-- Open --
----------
procedure Open
(Str : Unicode.CES.Byte_Sequence_Access;
Encoding : Unicode.CES.Encoding_Scheme;
Input : out String_Input)
is
BOM : Bom_Type;
begin
Input.Encoding := Encoding;
Input.Buffer := Str;
Input.Index := Input.Buffer'First;
Read_Bom (Input.Buffer.all, Input.Prolog_Size, BOM);
case BOM is
when Utf32_LE =>
Set_Encoding (Input, Utf32_LE_Encoding);
when Utf32_BE =>
Set_Encoding (Input, Utf32_BE_Encoding);
when Utf16_LE =>
Set_Encoding (Input, Utf16_LE_Encoding);
when Utf16_BE =>
Set_Encoding (Input, Utf16_BE_Encoding);
when Ucs4_BE | Ucs4_LE | Ucs4_2143 | Ucs4_3412 =>
raise Invalid_Encoding;
when Utf8_All | Unknown =>
Set_Encoding (Input, Utf8_Encoding);
end case;
end Open;
-----------
-- Close --
-----------
procedure Close (Input : in out String_Input) is
begin
Input_Sources.Close (Input_Source (Input));
end Close;
---------------
-- Next_Char --
---------------
procedure Next_Char
(From : in out String_Input;
C : out Unicode.Unicode_Char) is
begin
From.Encoding.Read (From.Buffer.all, From.Index, C);
end Next_Char;
---------
-- Eof --
---------
function Eof (From : String_Input) return Boolean is
begin
return From.Index > From.Buffer'Last;
end Eof;
end Input_Sources.Strings;
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