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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 Ada.Exceptions; use Ada.Exceptions;
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Unicode.CES; use Unicode.CES;
with Unicode.CES.Basic_8bit; use Unicode.CES.Basic_8bit;
with Unicode.CES.Utf8; use Unicode.CES.Utf8;
with Unicode.CCS; use Unicode.CCS;
with Unicode.CCS.Iso_8859_1; use Unicode.CCS.Iso_8859_1;
with Unicode.CCS.Iso_8859_2; use Unicode.CCS.Iso_8859_2;
with Unicode.CCS.Iso_8859_3; use Unicode.CCS.Iso_8859_3;
with Unicode.CCS.Iso_8859_4; use Unicode.CCS.Iso_8859_4;
package body Input_Sources is
-----------------
-- Prolog_Size --
-----------------
function Prolog_Size (From : Input_Source) return Natural is
begin
return From.Prolog_Size;
end Prolog_Size;
------------------
-- Set_Encoding --
------------------
procedure Set_Encoding
(Input : in out Input_Source;
Es : Unicode.CES.Encoding_Scheme) is
begin
Input.Es := Es;
end Set_Encoding;
------------------
-- Get_Encoding --
------------------
function Get_Encoding (Input : Input_Source)
return Unicode.CES.Encoding_Scheme is
begin
return Input.Es;
end Get_Encoding;
-----------------------
-- Set_Character_Set --
-----------------------
procedure Set_Character_Set
(Input : in out Input_Source;
Cs : Unicode.CCS.Character_Set) is
begin
Input.Cs := Cs;
end Set_Character_Set;
-----------------------
-- Get_Character_Set --
-----------------------
function Get_Character_Set (Input : Input_Source)
return Unicode.CCS.Character_Set is
begin
return Input.Cs;
end Get_Character_Set;
-------------------
-- Set_System_Id --
-------------------
procedure Set_System_Id (Input : in out Input_Source; Id : Byte_Sequence) is
begin
Free (Input.System_Id);
Input.System_Id := new Byte_Sequence'(Id);
end Set_System_Id;
-------------------
-- Get_System_Id --
-------------------
function Get_System_Id (Input : Input_Source) return Byte_Sequence is
begin
if Input.System_Id = null then
return "";
else
return Input.System_Id.all;
end if;
end Get_System_Id;
-------------------
-- Set_Public_Id --
-------------------
procedure Set_Public_Id (Input : in out Input_Source; Id : Byte_Sequence) is
begin
Free (Input.Public_Id);
Input.Public_Id := new Byte_Sequence'(Id);
end Set_Public_Id;
-------------------
-- Get_Public_Id --
-------------------
function Get_Public_Id (Input : Input_Source) return Byte_Sequence is
begin
if Input.Public_Id = null then
return "";
else
return Input.Public_Id.all;
end if;
end Get_Public_Id;
-----------
-- Close --
-----------
procedure Close (Input : in out Input_Source) is
begin
Free (Input.Public_Id);
Free (Input.System_Id);
end Close;
-------------------------
-- Set_Stream_Encoding --
-------------------------
procedure Set_Stream_Encoding
(Input : in out Input_Sources.Input_Source'Class;
Encoding : String)
is
Upper : constant String := To_Upper (Encoding);
begin
if Upper = "UTF-16" then
-- Do nothing, since UTF-16 is automatically detected by the input
-- stream, based on the first bytes. This also includes detection of
-- big-endian/little-endian, which we can't do from this function.
null;
elsif Upper = "UTF-8" then
Set_Encoding (Input, Utf8_Encoding);
Set_Character_Set (Input, Unicode_Character_Set);
elsif Upper = Unicode.CCS.Iso_8859_1.Name1
or else Upper = To_Upper (Unicode.CCS.Iso_8859_1.Name2)
then
Set_Encoding (Input, Basic_8bit_Encoding);
Set_Character_Set (Input, Iso_8859_1_Character_Set);
elsif Upper = Unicode.CCS.Iso_8859_2.Name1
or else Upper = To_Upper (Unicode.CCS.Iso_8859_2.Name2)
then
Set_Encoding (Input, Basic_8bit_Encoding);
Set_Character_Set (Input, Iso_8859_2_Character_Set);
elsif Upper = Unicode.CCS.Iso_8859_3.Name1 then
Set_Encoding (Input, Basic_8bit_Encoding);
Set_Character_Set (Input, Iso_8859_3_Character_Set);
elsif Upper = Unicode.CCS.Iso_8859_4.Name1 then
Set_Encoding (Input, Basic_8bit_Encoding);
Set_Character_Set (Input, Iso_8859_4_Character_Set);
else
Raise_Exception
(Invalid_Encoding'Identity, "Invalid encoding: " & Upper);
end if;
end Set_Stream_Encoding;
end Input_Sources;
|
