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146 | ------------------------------------------------------------------------------
-- Ada Web Server --
-- --
-- Copyright (C) 2002-2021, 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. --
------------------------------------------------------------------------------
with Ada.IO_Exceptions;
with Ada.Strings.Unbounded;
with AWS.Resources.Embedded;
with AWS.Resources.Streams.Disk.Once;
with AWS.Resources.Streams.Memory;
with AWS.Resources.Streams.ZLib;
package body AWS.Resources.Streams is
use Ada.Strings.Unbounded;
------------
-- Create --
------------
procedure Create
(Resource : out File_Type;
Stream : Stream_Access) is
begin
Resource := File_Type (Stream);
end Create;
--------------
-- Get_Line --
--------------
function Get_Line (Resource : in out Stream_Type'Class) return String is
Result : Unbounded_String;
B : Stream_Element_Array (1 .. 1);
L : Stream_Element_Offset;
Stop : Boolean := False;
begin
while not Stop and then not Resource.End_Of_File loop
Resource.Read (B, L);
if B (B'First) not in 13 | 10 then
Append (Result, Character'Val (Natural (B (B'First))));
elsif B (B'First) = 10 then
Stop := True;
end if;
end loop;
return To_String (Result);
end Get_Line;
----------
-- Name --
----------
function Name (Resource : Stream_Type) return String is
pragma Unreferenced (Resource);
begin
return "";
end Name;
----------
-- Open --
----------
function Open
(Name : String;
Form : String := "";
GZip : in out Boolean;
Once : Boolean := False) return Stream_Access
is
use type Embedded.Buffer_Access;
In_GZip : constant Boolean := GZip;
Buffer : constant Embedded.Buffer_Access :=
Embedded.Get_Buffer (Name, GZip);
Stream : Stream_Access;
begin
if Buffer /= null then
Stream := new Memory.Stream_Type;
Memory.Stream_Type (Stream.all).Append (Buffer);
else
declare
Filename : constant String :=
Check_Name (Name, Utils.Is_Regular_File'Access, GZip);
begin
if Filename = "" then
raise Ada.IO_Exceptions.Name_Error with
"File '" & Name & "' not found.";
else
Stream := (if Once
then new Disk.Once.Stream_Type
else new Disk.Stream_Type);
Disk.Stream_Type (Stream.all).Open (Filename, Form => Form);
end if;
end;
end if;
if GZip and not In_GZip then
return ZLib.Inflate_Create (Stream, Header => ZLib.ZL.GZip);
else
return Stream;
end if;
end Open;
----------
-- Size --
----------
overriding function Size
(Resource : Stream_Type) return Stream_Element_Offset
is
pragma Unreferenced (Resource);
begin
return Undefined_Length;
end Size;
end AWS.Resources.Streams;
|