| /* Implementation of the ACCESS intrinsic. |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| Contributed by François-Xavier Coudert <coudert@clipper.ens.fr> |
| |
| This file is part of the GNU Fortran 95 runtime library (libgfortran). |
| |
| Libgfortran is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| In addition to the permissions in the GNU General Public License, the |
| Free Software Foundation gives you unlimited permission to link the |
| compiled version of this file into combinations with other programs, |
| and to distribute those combinations without any restriction coming |
| from the use of this file. (The General Public License restrictions |
| do apply in other respects; for example, they cover modification of |
| the file, and distribution when not linked into a combine |
| executable.) |
| |
| Libgfortran is distributed in the hope that it will be useful, |
| but WITHOUT 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 along with libgfortran; see the file COPYING. If not, |
| write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| #include "config.h" |
| #include "libgfortran.h" |
| |
| #include <errno.h> |
| |
| #ifdef HAVE_STRING_H |
| #include <string.h> |
| #endif |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| |
| /* INTEGER FUNCTION ACCESS(NAME, MODE) |
| CHARACTER(len=*), INTENT(IN) :: NAME, MODE */ |
| |
| #ifdef HAVE_ACCESS |
| extern int access_func (char *, char *, gfc_charlen_type, gfc_charlen_type); |
| export_proto(access_func); |
| |
| int |
| access_func (char *name, char *mode, gfc_charlen_type name_len, |
| gfc_charlen_type mode_len) |
| { |
| char * file; |
| gfc_charlen_type i; |
| int m; |
| |
| /* Parse the MODE string. */ |
| m = F_OK; |
| for (i = 0; i < mode_len && mode[i]; i++) |
| switch (mode[i]) |
| { |
| case ' ': |
| break; |
| |
| case 'r': |
| case 'R': |
| m |= R_OK; |
| break; |
| |
| case 'w': |
| case 'W': |
| m |= W_OK; |
| break; |
| |
| case 'x': |
| case 'X': |
| m |= X_OK; |
| break; |
| |
| default: |
| return -1; |
| break; |
| } |
| |
| /* Trim trailing spaces from NAME argument. */ |
| while (name_len > 0 && name[name_len - 1] == ' ') |
| name_len--; |
| |
| /* Make a null terminated copy of the string. */ |
| file = gfc_alloca (name_len + 1); |
| memcpy (file, name, name_len); |
| file[name_len] = '\0'; |
| |
| /* And make the call to access(). */ |
| return (access (file, m) == 0 ? 0 : errno); |
| } |
| #endif |