/* Implementation of the LINK intrinsic.
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/* Implementation of the LINK intrinsic.
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Copyright (C) 2005, 2007, 2009 Free Software Foundation, Inc.
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Copyright (C) 2005, 2007, 2009 Free Software Foundation, Inc.
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Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
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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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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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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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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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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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version 3 of the License, or (at your option) any later version.
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Libgfortran is distributed in the hope that it will be useful,
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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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#include "libgfortran.h"
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#include "libgfortran.h"
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#include <errno.h>
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#include <errno.h>
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#include <string.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#include <unistd.h>
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#endif
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#endif
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/* SUBROUTINE LINK(PATH1, PATH2, STATUS)
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/* SUBROUTINE LINK(PATH1, PATH2, STATUS)
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CHARACTER(len=*), INTENT(IN) :: PATH1, PATH2
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CHARACTER(len=*), INTENT(IN) :: PATH1, PATH2
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INTEGER, INTENT(OUT), OPTIONAL :: STATUS */
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INTEGER, INTENT(OUT), OPTIONAL :: STATUS */
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#ifdef HAVE_LINK
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#ifdef HAVE_LINK
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extern void link_i4_sub (char *, char *, GFC_INTEGER_4 *, gfc_charlen_type,
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extern void link_i4_sub (char *, char *, GFC_INTEGER_4 *, gfc_charlen_type,
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gfc_charlen_type);
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gfc_charlen_type);
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iexport_proto(link_i4_sub);
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iexport_proto(link_i4_sub);
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void
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void
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link_i4_sub (char *path1, char *path2, GFC_INTEGER_4 *status,
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link_i4_sub (char *path1, char *path2, GFC_INTEGER_4 *status,
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gfc_charlen_type path1_len, gfc_charlen_type path2_len)
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gfc_charlen_type path1_len, gfc_charlen_type path2_len)
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{
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{
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int val;
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int val;
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char *str1, *str2;
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char *str1, *str2;
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/* Trim trailing spaces from paths. */
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/* Trim trailing spaces from paths. */
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while (path1_len > 0 && path1[path1_len - 1] == ' ')
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while (path1_len > 0 && path1[path1_len - 1] == ' ')
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path1_len--;
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path1_len--;
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while (path2_len > 0 && path2[path2_len - 1] == ' ')
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while (path2_len > 0 && path2[path2_len - 1] == ' ')
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path2_len--;
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path2_len--;
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/* Make a null terminated copy of the strings. */
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/* Make a null terminated copy of the strings. */
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str1 = gfc_alloca (path1_len + 1);
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str1 = gfc_alloca (path1_len + 1);
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memcpy (str1, path1, path1_len);
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memcpy (str1, path1, path1_len);
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str1[path1_len] = '\0';
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str1[path1_len] = '\0';
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str2 = gfc_alloca (path2_len + 1);
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str2 = gfc_alloca (path2_len + 1);
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memcpy (str2, path2, path2_len);
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memcpy (str2, path2, path2_len);
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str2[path2_len] = '\0';
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str2[path2_len] = '\0';
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val = link (str1, str2);
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val = link (str1, str2);
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if (status != NULL)
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if (status != NULL)
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*status = (val == 0) ? 0 : errno;
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*status = (val == 0) ? 0 : errno;
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}
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}
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iexport(link_i4_sub);
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iexport(link_i4_sub);
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extern void link_i8_sub (char *, char *, GFC_INTEGER_8 *, gfc_charlen_type,
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extern void link_i8_sub (char *, char *, GFC_INTEGER_8 *, gfc_charlen_type,
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gfc_charlen_type);
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gfc_charlen_type);
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iexport_proto(link_i8_sub);
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iexport_proto(link_i8_sub);
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void
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void
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link_i8_sub (char *path1, char *path2, GFC_INTEGER_8 *status,
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link_i8_sub (char *path1, char *path2, GFC_INTEGER_8 *status,
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gfc_charlen_type path1_len, gfc_charlen_type path2_len)
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gfc_charlen_type path1_len, gfc_charlen_type path2_len)
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{
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{
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int val;
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int val;
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char *str1, *str2;
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char *str1, *str2;
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/* Trim trailing spaces from paths. */
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/* Trim trailing spaces from paths. */
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while (path1_len > 0 && path1[path1_len - 1] == ' ')
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while (path1_len > 0 && path1[path1_len - 1] == ' ')
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path1_len--;
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path1_len--;
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while (path2_len > 0 && path2[path2_len - 1] == ' ')
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while (path2_len > 0 && path2[path2_len - 1] == ' ')
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path2_len--;
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path2_len--;
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/* Make a null terminated copy of the strings. */
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/* Make a null terminated copy of the strings. */
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str1 = gfc_alloca (path1_len + 1);
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str1 = gfc_alloca (path1_len + 1);
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memcpy (str1, path1, path1_len);
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memcpy (str1, path1, path1_len);
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str1[path1_len] = '\0';
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str1[path1_len] = '\0';
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str2 = gfc_alloca (path2_len + 1);
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str2 = gfc_alloca (path2_len + 1);
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memcpy (str2, path2, path2_len);
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memcpy (str2, path2, path2_len);
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str2[path2_len] = '\0';
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str2[path2_len] = '\0';
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val = link (str1, str2);
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val = link (str1, str2);
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if (status != NULL)
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if (status != NULL)
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*status = (val == 0) ? 0 : errno;
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*status = (val == 0) ? 0 : errno;
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}
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}
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iexport(link_i8_sub);
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iexport(link_i8_sub);
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extern GFC_INTEGER_4 link_i4 (char *, char *, gfc_charlen_type,
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extern GFC_INTEGER_4 link_i4 (char *, char *, gfc_charlen_type,
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gfc_charlen_type);
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gfc_charlen_type);
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export_proto(link_i4);
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export_proto(link_i4);
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GFC_INTEGER_4
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GFC_INTEGER_4
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link_i4 (char *path1, char *path2, gfc_charlen_type path1_len,
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link_i4 (char *path1, char *path2, gfc_charlen_type path1_len,
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gfc_charlen_type path2_len)
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gfc_charlen_type path2_len)
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{
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{
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GFC_INTEGER_4 val;
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GFC_INTEGER_4 val;
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link_i4_sub (path1, path2, &val, path1_len, path2_len);
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link_i4_sub (path1, path2, &val, path1_len, path2_len);
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return val;
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return val;
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}
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}
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extern GFC_INTEGER_8 link_i8 (char *, char *, gfc_charlen_type,
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extern GFC_INTEGER_8 link_i8 (char *, char *, gfc_charlen_type,
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gfc_charlen_type);
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gfc_charlen_type);
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export_proto(link_i8);
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export_proto(link_i8);
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GFC_INTEGER_8
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GFC_INTEGER_8
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link_i8 (char *path1, char *path2, gfc_charlen_type path1_len,
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link_i8 (char *path1, char *path2, gfc_charlen_type path1_len,
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gfc_charlen_type path2_len)
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gfc_charlen_type path2_len)
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{
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{
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GFC_INTEGER_8 val;
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GFC_INTEGER_8 val;
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link_i8_sub (path1, path2, &val, path1_len, path2_len);
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link_i8_sub (path1, path2, &val, path1_len, path2_len);
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return val;
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return val;
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}
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}
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#endif
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#endif
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