1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . D I R E C T O R I E S . V A L I D I T Y --
8 -- (Windows Version) --
10 -- Copyright (C) 2004-2007, Free Software Foundation, Inc. --
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 2, 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. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNAT; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
21 -- Boston, MA 02110-1301, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNAT was originally developed by the GNAT team at New York University. --
31 -- Extensive contributions were provided by Ada Core Technologies Inc. --
33 ------------------------------------------------------------------------------
35 -- This is the Windows version of this package
37 with Ada
.Characters
.Latin_1
; use Ada
.Characters
.Latin_1
;
39 package body Ada
.Directories
.Validity
is
41 Invalid_Character
: constant array (Character) of Boolean :=
42 (NUL
.. US |
'\' => True,
43 '/' |
':' |
'*' |
'?' => True,
44 '"' |
'<' |
'>' |
'|' => True,
48 ---------------------------------
49 -- Is_Path_Name_Case_Sensitive --
50 ---------------------------------
52 function Is_Path_Name_Case_Sensitive
return Boolean is
55 end Is_Path_Name_Case_Sensitive
;
57 ------------------------
58 -- Is_Valid_Path_Name --
59 ------------------------
61 function Is_Valid_Path_Name
(Name
: String) return Boolean is
62 Start
: Positive := Name
'First;
66 -- A path name cannot be empty, cannot contain more than 256 characters,
67 -- cannot contain invalid characters and each directory/file name need
70 if Name
'Length = 0 or else Name
'Length > 256 then
74 -- A drive letter may be specified at the beginning
77 and then Name
(Start
+ 1) = ':'
79 (Name
(Start
) in 'A' .. 'Z' or else
80 Name
(Start
) in 'a' .. 'z')
84 -- A drive letter followed by a colon and followed by nothing or
85 -- by a relative path is an ambiguous path name on Windows, so we
89 or else (Name
(Start
) /= '/' and then Name
(Start
) /= '\')
96 -- Look for the start of the next directory or file name
98 while Start
<= Name
'Last and then
99 (Name
(Start
) = '\' or Name
(Start
) = '/')
104 -- If all directories/file names are OK, return True
106 exit when Start
> Name
'Last;
110 -- Look for the end of the directory/file name
112 while Last
< Name
'Last loop
113 exit when Name
(Last
+ 1) = '\' or Name
(Last
+ 1) = '/';
117 -- Check if the directory/file name is valid
119 if not Is_Valid_Simple_Name
(Name
(Start
.. Last
)) then
123 -- Move to the next name
129 -- If Name follows the rules, it is valid
132 end Is_Valid_Path_Name
;
134 --------------------------
135 -- Is_Valid_Simple_Name --
136 --------------------------
138 function Is_Valid_Simple_Name
(Name
: String) return Boolean is
139 Only_Spaces
: Boolean;
142 -- A file name cannot be empty, cannot contain more than 256 characters,
143 -- and cannot contain invalid characters.
145 if Name
'Length = 0 or else Name
'Length > 256 then
152 for J
in Name
'Range loop
153 if Invalid_Character
(Name
(J
)) then
155 elsif Name
(J
) /= ' ' then
156 Only_Spaces
:= False;
160 -- If no invalid chars, and not all spaces, file name is valid
162 return not Only_Spaces
;
164 end Is_Valid_Simple_Name
;
170 function OpenVMS
return Boolean is
179 function Windows
return Boolean is
184 end Ada
.Directories
.Validity
;