libgfortran/intrinsics/rename.c

   1 /* Implementation of the RENAME intrinsic.
   2    Copyright (C) 2005-2013 Free Software Foundation, Inc.
   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
  10 version 3 of the License, or (at your option) any later version.
  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
  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/>.  */
  25
  26 #include "libgfortran.h"
  27
  28 #include <errno.h>
  29 #include <string.h>
  30
  31 /* SUBROUTINE RENAME(PATH1, PATH2, STATUS)
  32    CHARACTER(len=*), INTENT(IN) :: PATH1, PATH2
  33    INTEGER, INTENT(OUT), OPTIONAL :: STATUS  */
  34
  35 extern void rename_i4_sub (char *, char *, GFC_INTEGER_4 *, gfc_charlen_type,
  36                            gfc_charlen_type);
  37 iexport_proto(rename_i4_sub);
  38
  39 void
  40 rename_i4_sub (char *path1, char *path2, GFC_INTEGER_4 *status,
  41                gfc_charlen_type path1_len, gfc_charlen_type path2_len)
  42 {
  43   int val;
  44   char *str1, *str2;
  45
  46   /* Trim trailing spaces from paths.  */
  47   while (path1_len > 0 && path1[path1_len - 1] == ' ')
  48     path1_len--;
  49   while (path2_len > 0 && path2[path2_len - 1] == ' ')
  50     path2_len--;
  51
  52   /* Make a null terminated copy of the strings.  */
  53   str1 = gfc_alloca (path1_len + 1);
  54   memcpy (str1, path1, path1_len);
  55   str1[path1_len] = '\0';
  56
  57   str2 = gfc_alloca (path2_len + 1);
  58   memcpy (str2, path2, path2_len);
  59   str2[path2_len] = '\0';
  60
  61   val = rename (str1, str2);
  62
  63   if (status != NULL)
  64     *status = (val == 0) ? 0 : errno;
  65 }
  66 iexport(rename_i4_sub);
  67
  68 extern void rename_i8_sub (char *, char *, GFC_INTEGER_8 *, gfc_charlen_type,
  69                            gfc_charlen_type);
  70 iexport_proto(rename_i8_sub);
  71
  72 void
  73 rename_i8_sub (char *path1, char *path2, GFC_INTEGER_8 *status,
  74                gfc_charlen_type path1_len, gfc_charlen_type path2_len)
  75 {
  76   int val;
  77   char *str1, *str2;
  78
  79   /* Trim trailing spaces from paths.  */
  80   while (path1_len > 0 && path1[path1_len - 1] == ' ')
  81     path1_len--;
  82   while (path2_len > 0 && path2[path2_len - 1] == ' ')
  83     path2_len--;
  84
  85   /* Make a null terminated copy of the strings.  */
  86   str1 = gfc_alloca (path1_len + 1);
  87   memcpy (str1, path1, path1_len);
  88   str1[path1_len] = '\0';
  89
  90   str2 = gfc_alloca (path2_len + 1);
  91   memcpy (str2, path2, path2_len);
  92   str2[path2_len] = '\0';
  93
  94   val = rename (str1, str2);
  95
  96   if (status != NULL)
  97     *status = (val == 0) ? 0 : errno;
  98 }
  99 iexport(rename_i8_sub);
 100
 101 extern GFC_INTEGER_4 rename_i4 (char *, char *, gfc_charlen_type,
 102                                 gfc_charlen_type);
 103 export_proto(rename_i4);
 104
 105 GFC_INTEGER_4
 106 rename_i4 (char *path1, char *path2, gfc_charlen_type path1_len,
 107            gfc_charlen_type path2_len)
 108 {
 109   GFC_INTEGER_4 val;
 110   rename_i4_sub (path1, path2, &val, path1_len, path2_len);
 111   return val;
 112 }
 113
 114 extern GFC_INTEGER_8 rename_i8 (char *, char *, gfc_charlen_type,
 115                                 gfc_charlen_type);
 116 export_proto(rename_i8);
 117
 118 GFC_INTEGER_8
 119 rename_i8 (char *path1, char *path2, gfc_charlen_type path1_len,
 120            gfc_charlen_type path2_len)
 121 {
 122   GFC_INTEGER_8 val;
 123   rename_i8_sub (path1, path2, &val, path1_len, path2_len);
 124   return val;
 125 }