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