------------------------------------------------------------------------------ -- -- -- 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) 2004-2005, 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 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 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 .. NBSP => True, others => False); --------------------------------- -- 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; 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; ------------- -- OpenVMS -- ------------- function OpenVMS return Boolean is begin return False; end OpenVMS; end Ada.Directories.Validity;