/usr/share/ada/adainclude/aws/aws-resources-files.adb is in libaws2.10.2-dev 2.10.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- Ada Web Server --
-- --
-- Copyright (C) 2002-2011, 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 Ada.Directories;
with Ada.IO_Exceptions;
with AWS.Resources.Streams.Disk;
with AWS.Resources.Streams.ZLib;
with ZLib;
package body AWS.Resources.Files is
use Ada;
use type Directories.File_Kind;
-----------
-- Exist --
-----------
function Exist (Name : String) return File_Instance is
VP, VG : Boolean := False;
begin
if Is_GZip (Name) then
VG := Utils.Is_Regular_File (Name);
VP := Utils.Is_Regular_File
(Name (Name'First .. Name'Last - GZip_Ext'Length));
else
VP := Utils.Is_Regular_File (Name);
VG := Utils.Is_Regular_File (Name & GZip_Ext);
end if;
if VG and then VP then
return Both;
elsif VG then
return GZip;
elsif VP then
return Plain;
else
return None;
end if;
end Exist;
---------------
-- File_Size --
---------------
function File_Size (Name : String) return Utils.File_Size_Type is
begin
if Utils.Is_Regular_File (Name) then
return Utils.File_Size (Name);
else
if Is_GZip (Name) then
raise Resource_Error;
else
return File_Size (Name & GZip_Ext);
end if;
end if;
end File_Size;
--------------------
-- File_Timestamp --
--------------------
function File_Timestamp (Name : String) return Ada.Calendar.Time is
begin
if Utils.Is_Regular_File (Name) then
return Directories.Modification_Time (Name);
else
if Is_GZip (Name) then
raise Resource_Error;
else
return File_Timestamp (Name & GZip_Ext);
end if;
end if;
end File_Timestamp;
---------------------
-- Is_Regular_File --
---------------------
function Is_Regular_File (Name : String) return Boolean is
begin
return Utils.Is_Regular_File (Name)
or else
(not Is_GZip (Name)
and then Utils.Is_Regular_File (Name & GZip_Ext));
end Is_Regular_File;
----------
-- Open --
----------
procedure Open
(File : out File_Type;
Name : String;
Form : String := "";
GZip : in out Boolean)
is
use type AWS.Resources.Streams.Stream_Access;
File_Kind : constant Resources.File_Instance := Resources.Exist (Name);
Stream : AWS.Resources.Streams.Stream_Access;
procedure Open_File (Name : String);
---------------
-- Open_File --
---------------
procedure Open_File (Name : String) is
begin
Stream := new AWS.Resources.Streams.Disk.Stream_Type;
AWS.Resources.Streams.Disk.Open
(AWS.Resources.Streams.Disk.Stream_Type (Stream.all), Name, Form);
end Open_File;
begin
if Is_GZip (Name) then
-- Don't try to open file Name & ".gz.gz"
case File_Kind is
when Both | Resources.GZip =>
GZip := False;
Open_File (Name);
when Plain | None =>
raise IO_Exceptions.Name_Error;
end case;
elsif GZip then
case File_Kind is
when Both | Resources.GZip =>
Open_File (Name & ".gz");
when Plain =>
Open_File (Name);
GZip := False;
when None =>
raise IO_Exceptions.Name_Error;
end case;
else
case File_Kind is
when Both | Plain =>
Open_File (Name);
when Resources.GZip =>
Open_File (Name & ".gz");
Stream := Streams.ZLib.Inflate_Create
(Stream, Header => ZLib.GZip);
when None =>
raise IO_Exceptions.Name_Error;
end case;
end if;
Streams.Create (File, Stream);
end Open;
procedure Open
(File : out File_Type;
Name : String;
Form : String := "")
is
GZip : Boolean := False;
begin
Open (File, Name, Form, GZip);
end Open;
end AWS.Resources.Files;
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