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|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- GNAT.SOCKETS.THIN.HOST_ERROR_MESSAGES --
-- --
-- B o d y --
-- --
-- Copyright (C) 2007, AdaCore --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- 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. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This is the default implementation of this unit, providing explicit
-- literal messages (we do not use hstrerror from the standard C library,
-- as this function is obsolete).
separate (GNAT.Sockets.Thin)
package body Host_Error_Messages is
package Messages is
HOST_NOT_FOUND : aliased char_array := "Host not found" & nul;
TRY_AGAIN : aliased char_array := "Try again" & nul;
NO_RECOVERY : aliased char_array := "No recovery" & nul;
NO_DATA : aliased char_array := "No address" & nul;
Unknown_Error : aliased char_array := "Unknown error" & nul;
end Messages;
function Host_Error_Message (H_Errno : Integer) return C.Strings.chars_ptr
is
use Interfaces.C.Strings;
function TCP
(P : char_array_access; Nul_Check : Boolean := False) return chars_ptr
renames To_Chars_Ptr;
begin
case H_Errno is
when Constants.HOST_NOT_FOUND =>
return TCP (Messages.HOST_NOT_FOUND'Access);
when Constants.TRY_AGAIN =>
return TCP (Messages.TRY_AGAIN'Access);
when Constants.NO_RECOVERY =>
return TCP (Messages.NO_RECOVERY'Access);
when Constants.NO_DATA =>
return TCP (Messages.NO_DATA'Access);
when others =>
return TCP (Messages.Unknown_Error'Access);
end case;
end Host_Error_Message;
end Host_Error_Messages;
|
