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-- Ada Web Server --
-- --
-- Copyright (C) 2000-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3, 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are --
-- granted additional permissions described in the GCC Runtime Library --
-- Exception, version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- 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. --
------------------------------------------------------------------------------
pragma Ada_2012;
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 with
Post =>
(N > Count (Headers) and then Get_Line'Result'Length = 0)
or else N <= Count (Headers);
-- 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.
overriding function Union
(Left, Right : List; Unique : Boolean) return List;
-- 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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