File : soap/soap-message-reader.adb
------------------------------------------------------------------------------
-- Ada Web Server --
-- --
-- Copyright (C) 2000-2003 --
-- ACT-Europe --
-- --
-- Authors: Dmitriy Anisimkov - Pascal Obry --
-- --
-- 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. --
------------------------------------------------------------------------------
-- $Id: soap-message-reader.adb,v 1.12 2003/05/22 16:13:06 obry Exp $
-- This package is based on Tree_Reader from the XMLada package.
with Sax.Attributes; use Sax.Attributes;
with Unicode; use Unicode;
with Unicode.CES; use Unicode.CES;
with DOM.Core.Nodes; use DOM.Core.Nodes;
with DOM.Core.Documents; use DOM.Core.Documents;
with DOM.Core.Elements; use DOM.Core.Elements;
with SOAP.Utils;
package body SOAP.Message.Reader is
----------------
-- Characters --
----------------
procedure Characters
(Handler : in out Tree_Reader;
Ch : in Unicode.CES.Byte_Sequence)
is
Tmp : Node;
pragma Warnings (Off, Tmp);
-- We are not using pragma Unreferenced here because of GNAT 3.15p.
-- It counts left side assignment as a reference.
begin
declare
-- Ch comes from the SAX parser and is Utf8 encoded. We convert
-- it back to Basic_8bit (standard Ada strings). Depending on
-- Ch's value this could raise an exception. For example if
-- Ch is Utf32 encoded and contains characters outside the
-- Basic_8bit encoding.
Str : constant String := Utils.From_Utf8 (Ch);
begin
Tmp := Append_Child
(Handler.Current_Node, Create_Text_Node (Handler.Tree, Str));
end;
exception
when Unicode.CES.Invalid_Encoding =>
-- Here we had a problem decoding the string, just keep Ch as-is
Tmp := Append_Child
(Handler.Current_Node, Create_Text_Node (Handler.Tree, Ch));
end Characters;
-----------------
-- End_Element --
-----------------
procedure End_Element
(Handler : in out Tree_Reader;
Namespace_URI : in Unicode.CES.Byte_Sequence := "";
Local_Name : in Unicode.CES.Byte_Sequence := "";
Qname : in Unicode.CES.Byte_Sequence := "")
is
pragma Unreferenced (Namespace_URI);
pragma Unreferenced (Local_Name);
pragma Unreferenced (Qname);
begin
Handler.Current_Node := Parent_Node (Handler.Current_Node);
end End_Element;
--------------
-- Get_Tree --
--------------
function Get_Tree (Read : in Tree_Reader) return Document is
begin
return Read.Tree;
end Get_Tree;
--------------------------
-- Ignorable_Whitespace --
--------------------------
procedure Ignorable_Whitespace
(Handler : in out Tree_Reader;
Ch : in Unicode.CES.Byte_Sequence)
is
Tmp : Node;
pragma Warnings (Off, Tmp);
-- We are not using pragma Unreferenced here becouse of GNAT 3.15p.
-- It is count left side assignment as a reference.
begin
-- Ignore these white spaces at the toplevel
if Ch'Length >= 1
and then Ch (Ch'First) /= ASCII.LF
and then Handler.Current_Node /= Handler.Tree
then
Tmp := Append_Child
(Handler.Current_Node, Create_Text_Node (Handler.Tree, Ch));
end if;
end Ignorable_Whitespace;
--------------------
-- Start_Document --
--------------------
procedure Start_Document (Handler : in out Tree_Reader) is
Implementation : DOM_Implementation;
begin
Handler.Tree := Create_Document (Implementation);
Handler.Current_Node := Handler.Tree;
end Start_Document;
-------------------
-- Start_Element --
-------------------
procedure Start_Element
(Handler : in out Tree_Reader;
Namespace_URI : in Unicode.CES.Byte_Sequence := "";
Local_Name : in Unicode.CES.Byte_Sequence := "";
Qname : in Unicode.CES.Byte_Sequence := "";
Atts : in Sax.Attributes.Attributes'Class)
is
pragma Unreferenced (Local_Name);
begin
Handler.Current_Node := Append_Child
(Handler.Current_Node,
Create_Element_NS (Handler.Tree,
Namespace_URI => Namespace_URI,
Qualified_Name => Qname));
-- Insert the attributes in the right order.
for J in 0 .. Get_Length (Atts) - 1 loop
Set_Attribute_NS
(Handler.Current_Node,
Get_URI (Atts, J),
Get_Qname (Atts, J),
Get_Value (Atts, J));
end loop;
end Start_Element;
end SOAP.Message.Reader;