1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--             A D A . D I R E C T O R I E S . V A L I D I T Y              --
6--                                                                          --
7--                                 B o d y                                  --
8--                             (POSIX Version)                              --
9--                                                                          --
10--          Copyright (C) 2004-2010, Free Software Foundation, Inc.         --
11--                                                                          --
12-- GNAT is free software;  you can  redistribute it  and/or modify it under --
13-- terms of the  GNU General Public License as published  by the Free Soft- --
14-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
15-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
16-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
17-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
18--                                                                          --
19-- As a special exception under Section 7 of GPL version 3, you are granted --
20-- additional permissions described in the GCC Runtime Library Exception,   --
21-- version 3.1, as published by the Free Software Foundation.               --
22--                                                                          --
23-- You should have received a copy of the GNU General Public License and    --
24-- a copy of the GCC Runtime Library Exception along with this program;     --
25-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
26-- <http://www.gnu.org/licenses/>.                                          --
27--                                                                          --
28-- GNAT was originally developed  by the GNAT team at  New York University. --
29-- Extensive contributions were provided by Ada Core Technologies Inc.      --
30--                                                                          --
31------------------------------------------------------------------------------
32
33--  This is the POSIX version of this package
34
35package body Ada.Directories.Validity is
36
37   ---------------------------------
38   -- Is_Path_Name_Case_Sensitive --
39   ---------------------------------
40
41   function Is_Path_Name_Case_Sensitive return Boolean is
42   begin
43      return True;
44   end Is_Path_Name_Case_Sensitive;
45
46   ------------------------
47   -- Is_Valid_Path_Name --
48   ------------------------
49
50   function Is_Valid_Path_Name (Name : String) return Boolean is
51   begin
52      --  A path name cannot be empty and cannot contain any NUL character
53
54      if Name'Length = 0 then
55         return False;
56
57      else
58         for J in Name'Range loop
59            if Name (J) = ASCII.NUL then
60               return False;
61            end if;
62         end loop;
63      end if;
64
65      --  If Name does not contain any NUL character, it is valid
66
67      return True;
68   end Is_Valid_Path_Name;
69
70   --------------------------
71   -- Is_Valid_Simple_Name --
72   --------------------------
73
74   function Is_Valid_Simple_Name (Name : String) return Boolean is
75   begin
76      --  A file name cannot be empty and cannot contain a slash ('/') or
77      --  the NUL character.
78
79      if Name'Length = 0 then
80         return False;
81
82      else
83         for J in Name'Range loop
84            if Name (J) = '/' or else Name (J) = ASCII.NUL then
85               return False;
86            end if;
87         end loop;
88      end if;
89
90      --  If Name does not contain any slash or NUL, it is valid
91
92      return True;
93   end Is_Valid_Simple_Name;
94
95   -------------
96   -- OpenVMS --
97   -------------
98
99   function OpenVMS return Boolean is
100   begin
101      return False;
102   end OpenVMS;
103
104   -------------
105   -- Windows --
106   -------------
107
108   function Windows return Boolean is
109   begin
110      return False;
111   end Windows;
112
113end Ada.Directories.Validity;
114