gcc/ada/libgnat/a-dirval.adb

   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) 2004-2023, 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
  35 package 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    -- Windows --
  97    -------------
  98
  99    function Windows return Boolean is
 100    begin
 101       return False;
 102    end Windows;
 103
 104 end Ada.Directories.Validity;