File : adagio-upload-resource-file.adb
------------------------------------------------------------------------------
-- ADAGIO - ADALID - AENEA. --
-- --
-- Copyright (C) 2003 --
-- A. Mosteo. --
-- --
-- Authors: A. Mosteo. (adagio@mosteo.com) --
-- --
-- If you have any questions in regard to this software, please address --
-- them to the above email. --
-- --
-- This program 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 program 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. --
-- --
-- You are not allowed to use any part of this code to develop a program --
-- whose output would be used to harass or prosecute other users of the --
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------------------------------------------------------------------------------
-- $Id: adagio-upload-resource-file.adb,v 1.3 2004/01/21 21:05:50 Jano Exp $
-- Uploadable resources.
with Adagio.File.Criteria;
with Adagio.File.Safe;
with Adagio.Globals.Options;
with Sha1;
with Ada.Streams.Stream_io;
with Ada.Unchecked_deallocation;
package body Adagio.Upload.Resource.File is
Upload_buffer_size : constant File_size :=
File_size (Globals.Options.Uploads_SendBufferSize);
procedure Free is new Unchecked_deallocation (
Buffered_stream.Buffered_stream, Buffered_stream.Object_access);
------------------------------------------------------------------------
-- Create --
------------------------------------------------------------------------
-- Creation
function Create (Target : in Adagio.File.Object) return Object_access is
O : Object_access := new Object;
begin
O.File := Target;
Decoupled_file_stream.Get_decoupled_file_stream (
O.DS, Adagio.File.Path (Target));
return O;
end Create;
------------------------------------------------------------------------
-- Id --
------------------------------------------------------------------------
-- Unique id for the resource, will identify it in queues.
function Id (This : in Object) return String is
begin
return "urn:sha1:" & Sha1.To_base32 (Adagio.File.Sha (File (This)));
end Id;
------------------------------------------------------------------------
-- Set_position --
------------------------------------------------------------------------
-- Set the starting position for its data. Call it before Stream.
procedure Set_position (This : in out Object; Position : in Natural) is
use Ada.Streams.Stream_io;
begin
Decoupled_file_stream.Set_position (This.DS, Count (Position));
end Set_position;
------------------------------------------------------------------------
-- Stream --
------------------------------------------------------------------------
-- Get an stream for the resource binary data
procedure Stream (This : in out Object; Result : out Stream_access) is
use type Buffered_stream.Object_access;
begin
if This.BS = null then
This.BS := new Buffered_stream.Buffered_stream (
Streams.Stream_element_offset (Upload_buffer_size));
Buffered_stream.Get_buffered_stream (
This.BS.all, This.DS'Unchecked_access);
end if;
Result := Stream_access (This.BS);
end Stream;
------------------------------------------------------------------------
-- Content_type --
------------------------------------------------------------------------
-- Get the corresponding Content-Type: http header for the resource.
function Content_type (This : in Object) return String is
pragma Unreferenced (This);
begin
return "application/x-binary";
end Content_type;
------------------------------------------------------------------------
-- Name --
------------------------------------------------------------------------
-- Descriptive name of the resource.
function Name (This : in Object) return String is
begin
return Adagio.File.Name (This.File);
end Name;
------------------------------------------------------------------------
-- Size --
------------------------------------------------------------------------
-- Size in bytes of the resource.
function Size (This : in Object) return Natural is
begin
return Natural (Decoupled_file_stream.Size (This.DS));
end Size;
------------------------------------------------------------------------
-- Qualify --
------------------------------------------------------------------------
-- Say if a resource qualifies according a criteria string:
function Qualify (This : in Object; Criteria : in String) return Boolean is
begin
return Adagio.File.Criteria.Qualify (This.File, Criteria);
end Qualify;
------------------------------------------------------------------------
-- Add_upload --
------------------------------------------------------------------------
-- Marks this file as having another upload.
procedure Add_upload (This : in Object) is
begin
Adagio.File.Safe.Add_upload (This.File);
end Add_upload;
------------------------------------------------------------------------
-- File --
------------------------------------------------------------------------
-- Get the boxed file.
function File (This : in Object) return Adagio.File.object is
begin
return This.File;
end File;
------------------------------------------------------------------------
-- Finalize --
------------------------------------------------------------------------
procedure Finalize (This : in out Object) is
begin
Free (This.BS);
end Finalize;
end Adagio.Upload.Resource.File;