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a119fc1c | 1 | /* Implementation of the ACCESS intrinsic. |
f0bcf628 | 2 | Copyright (C) 2006-2014 Free Software Foundation, Inc. |
a119fc1c FXC |
3 | Contributed by François-Xavier Coudert <coudert@clipper.ens.fr> |
4 | ||
5 | This file is part of the GNU Fortran 95 runtime library (libgfortran). | |
6 | ||
7 | Libgfortran is free software; you can redistribute it and/or | |
8 | modify it under the terms of the GNU General Public | |
9 | License as published by the Free Software Foundation; either | |
748086b7 | 10 | version 3 of the License, or (at your option) any later version. |
a119fc1c FXC |
11 | |
12 | Libgfortran is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
748086b7 JJ |
17 | Under Section 7 of GPL version 3, you are granted additional |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
a119fc1c | 25 | |
a119fc1c FXC |
26 | #include "libgfortran.h" |
27 | ||
28 | #include <errno.h> | |
a119fc1c | 29 | #include <string.h> |
36ae8a61 | 30 | |
a119fc1c FXC |
31 | #ifdef HAVE_UNISTD_H |
32 | #include <unistd.h> | |
33 | #endif | |
34 | ||
35 | /* INTEGER FUNCTION ACCESS(NAME, MODE) | |
36 | CHARACTER(len=*), INTENT(IN) :: NAME, MODE */ | |
37 | ||
38 | #ifdef HAVE_ACCESS | |
39 | extern int access_func (char *, char *, gfc_charlen_type, gfc_charlen_type); | |
40 | export_proto(access_func); | |
41 | ||
42 | int | |
43 | access_func (char *name, char *mode, gfc_charlen_type name_len, | |
44 | gfc_charlen_type mode_len) | |
45 | { | |
46 | char * file; | |
47 | gfc_charlen_type i; | |
48 | int m; | |
49 | ||
50 | /* Parse the MODE string. */ | |
51 | m = F_OK; | |
52 | for (i = 0; i < mode_len && mode[i]; i++) | |
53 | switch (mode[i]) | |
54 | { | |
55 | case ' ': | |
56 | break; | |
57 | ||
58 | case 'r': | |
59 | case 'R': | |
60 | m |= R_OK; | |
61 | break; | |
62 | ||
63 | case 'w': | |
64 | case 'W': | |
65 | m |= W_OK; | |
66 | break; | |
67 | ||
68 | case 'x': | |
69 | case 'X': | |
70 | m |= X_OK; | |
71 | break; | |
72 | ||
73 | default: | |
74 | return -1; | |
75 | break; | |
76 | } | |
77 | ||
78 | /* Trim trailing spaces from NAME argument. */ | |
79 | while (name_len > 0 && name[name_len - 1] == ' ') | |
80 | name_len--; | |
81 | ||
82 | /* Make a null terminated copy of the string. */ | |
83 | file = gfc_alloca (name_len + 1); | |
84 | memcpy (file, name, name_len); | |
85 | file[name_len] = '\0'; | |
86 | ||
87 | /* And make the call to access(). */ | |
88 | return (access (file, m) == 0 ? 0 : errno); | |
89 | } | |
a119fc1c | 90 | #endif |