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-- Ada Web Server --
-- --
-- Copyright (C) 2000-2009, AdaCore --
-- --
-- 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. --
-- --
------------------------------------------------------------------------------
with AWS.Containers.Tables;
with AWS.Net;
package AWS.Headers is
type List is new AWS.Containers.Tables.Table_Type with private;
-- Header container. This set handles a set of HTTP header line, each new
-- header line is inserted at the end of the list (see AWS.Headers.Set API)
-- and can be retrieved by the following services. Header lines are
-- numbered from 1 to N.
Empty_List : constant List;
subtype VString_Array is AWS.Containers.Tables.VString_Array;
subtype Element is AWS.Containers.Tables.Element;
Format_Error : exception;
-- Raised when header line format is wrong
procedure Send_Header
(Socket : Net.Socket_Type'Class; Headers : List);
-- Send all header lines in Headers list to the socket
function Get_Line (Headers : List; N : Positive) return String;
-- Returns the Nth header line in Headers container. The returned value is
-- formatted as a correct header line:
--
-- message-header = field-name ":" [ field-value ]
--
-- That is the header-name followed with character ':' and the header
-- values. If there is less than Nth header line it returns the empty
-- string. Note that this routine does returns all header line values, for
-- example it would return:
--
-- Content_Type: multipart/mixed; boundary="0123_The_Boundary_Value_"
--
-- For a file upload content type header style.
function Get_Values (Headers : List; Name : String) return String;
-- Returns all values for the specified header field Name in a
-- comma-separated string. This format is conformant to [RFC 2616 - 4.2]
-- (see last paragraph).
function Length (Headers : AWS.Headers.List) return Natural;
-- Returns the length (in bytes) of the header, including the ending
-- empty line.
-- See AWS.Containers.Tables for inherited routines
private
type List is new AWS.Containers.Tables.Table_Type with null record;
Empty_List : constant List :=
(AWS.Containers.Tables.Empty_Table with null record);
end AWS.Headers;
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