| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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 -- |
| -- (Windows Version) -- |
| -- -- |
| -- Copyright (C) 2004-2021, 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 Windows version of this package |
| |
| with Ada.Characters.Latin_1; use Ada.Characters.Latin_1; |
| |
| package body Ada.Directories.Validity is |
| |
| Invalid_Character : constant array (Character) of Boolean := |
| (NUL .. US | '\' => True, |
| '/' | ':' | '*' | '?' => True, |
| '"' | '<' | '>' | '|' => True, |
| DEL => True, |
| others => False); |
| -- Note that a valid file-name or path-name is implementation defined. |
| -- To support UTF-8 file and directory names, we do not want to be too |
| -- restrictive here. |
| |
| --------------------------------- |
| -- Is_Path_Name_Case_Sensitive -- |
| --------------------------------- |
| |
| function Is_Path_Name_Case_Sensitive return Boolean is |
| begin |
| return False; |
| end Is_Path_Name_Case_Sensitive; |
| |
| ------------------------ |
| -- Is_Valid_Path_Name -- |
| ------------------------ |
| |
| function Is_Valid_Path_Name (Name : String) return Boolean is |
| Start : Positive := Name'First; |
| Last : Natural; |
| |
| begin |
| -- A path name cannot be empty, cannot contain more than 256 characters, |
| -- cannot contain invalid characters and each directory/file name need |
| -- to be valid. |
| |
| if Name'Length = 0 or else Name'Length > 256 then |
| return False; |
| |
| else |
| -- A drive letter may be specified at the beginning |
| |
| if Name'Length >= 2 |
| and then Name (Start + 1) = ':' |
| and then |
| (Name (Start) in 'A' .. 'Z' or else Name (Start) in 'a' .. 'z') |
| then |
| Start := Start + 2; |
| |
| -- A drive letter followed by a colon and followed by nothing or |
| -- by a relative path is an ambiguous path name on Windows, so we |
| -- don't accept it. |
| |
| if Start > Name'Last |
| or else (Name (Start) /= '/' and then Name (Start) /= '\') |
| then |
| return False; |
| end if; |
| end if; |
| |
| loop |
| -- Look for the start of the next directory or file name |
| |
| while Start <= Name'Last |
| and then (Name (Start) = '\' or Name (Start) = '/') |
| loop |
| Start := Start + 1; |
| end loop; |
| |
| -- If all directories/file names are OK, return True |
| |
| exit when Start > Name'Last; |
| |
| Last := Start; |
| |
| -- Look for the end of the directory/file name |
| |
| while Last < Name'Last loop |
| exit when Name (Last + 1) = '\' or Name (Last + 1) = '/'; |
| Last := Last + 1; |
| end loop; |
| |
| -- Check if the directory/file name is valid |
| |
| if not Is_Valid_Simple_Name (Name (Start .. Last)) then |
| return False; |
| end if; |
| |
| -- Move to the next name |
| |
| Start := Last + 1; |
| end loop; |
| end if; |
| |
| -- If Name follows the rules, it is valid |
| |
| return True; |
| end Is_Valid_Path_Name; |
| |
| -------------------------- |
| -- Is_Valid_Simple_Name -- |
| -------------------------- |
| |
| function Is_Valid_Simple_Name (Name : String) return Boolean is |
| Only_Spaces : Boolean; |
| |
| begin |
| -- A file name cannot be empty, cannot contain more than 256 characters, |
| -- and cannot contain invalid characters. |
| |
| if Name'Length = 0 or else Name'Length > 256 then |
| return False; |
| |
| -- Name length is OK |
| |
| else |
| Only_Spaces := True; |
| for J in Name'Range loop |
| if Invalid_Character (Name (J)) then |
| return False; |
| elsif Name (J) /= ' ' then |
| Only_Spaces := False; |
| end if; |
| end loop; |
| |
| -- If no invalid chars, and not all spaces, file name is valid |
| |
| return not Only_Spaces; |
| end if; |
| end Is_Valid_Simple_Name; |
| |
| ------------- |
| -- Windows -- |
| ------------- |
| |
| function Windows return Boolean is |
| begin |
| return True; |
| end Windows; |
| |
| end Ada.Directories.Validity; |
