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+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- A D A . D I R E C T O R I E S . V A L I D I T Y --
+-- --
+-- B o d y --
+-- (POSIX Version) --
+-- --
+-- Copyright (C) 2004-2010, Free Software Foundation, Inc. --
+-- --
+-- 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 3, 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. --
+-- --
+-- 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/>. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+-- This is the POSIX version of this package
+
+package body Ada.Directories.Validity is
+
+ ---------------------------------
+ -- Is_Path_Name_Case_Sensitive --
+ ---------------------------------
+
+ function Is_Path_Name_Case_Sensitive return Boolean is
+ begin
+ return True;
+ end Is_Path_Name_Case_Sensitive;
+
+ ------------------------
+ -- Is_Valid_Path_Name --
+ ------------------------
+
+ function Is_Valid_Path_Name (Name : String) return Boolean is
+ begin
+ -- A path name cannot be empty and cannot contain any NUL character
+
+ if Name'Length = 0 then
+ return False;
+
+ else
+ for J in Name'Range loop
+ if Name (J) = ASCII.NUL then
+ return False;
+ end if;
+ end loop;
+ end if;
+
+ -- If Name does not contain any NUL character, it is valid
+
+ return True;
+ end Is_Valid_Path_Name;
+
+ --------------------------
+ -- Is_Valid_Simple_Name --
+ --------------------------
+
+ function Is_Valid_Simple_Name (Name : String) return Boolean is
+ begin
+ -- A file name cannot be empty and cannot contain a slash ('/') or
+ -- the NUL character.
+
+ if Name'Length = 0 then
+ return False;
+
+ else
+ for J in Name'Range loop
+ if Name (J) = '/' or else Name (J) = ASCII.NUL then
+ return False;
+ end if;
+ end loop;
+ end if;
+
+ -- If Name does not contain any slash or NUL, it is valid
+
+ return True;
+ end Is_Valid_Simple_Name;
+
+ -------------
+ -- OpenVMS --
+ -------------
+
+ function OpenVMS return Boolean is
+ begin
+ return False;
+ end OpenVMS;
+
+ -------------
+ -- Windows --
+ -------------
+
+ function Windows return Boolean is
+ begin
+ return False;
+ end Windows;
+
+end Ada.Directories.Validity;