libgfortran/intrinsics/rename.c

   1 /* Implementation of the RENAME intrinsic.
   2    Copyright (C) 2005, 2007 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 2 of the License, or (at your option) any later version.
  11
  12 In addition to the permissions in the GNU General Public License, the
  13 Free Software Foundation gives you unlimited permission to link the
  14 compiled version of this file into combinations with other programs,
  15 and to distribute those combinations without any restriction coming
  16 from the use of this file.  (The General Public License restrictions
  17 do apply in other respects; for example, they cover modification of
  18 the file, and distribution when not linked into a combine
  19 executable.)
  20
  21 Libgfortran is distributed in the hope that it will be useful,
  22 but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24 GNU General Public License for more details.
  25
  26 You should have received a copy of the GNU General Public
  27 License along with libgfortran; see the file COPYING.  If not,
  28 write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  29 Boston, MA 02110-1301, USA.  */
  30
  31 #include "libgfortran.h"
  32
  33 #include <errno.h>
  34 #include <string.h>
  35
  36 /* SUBROUTINE RENAME(PATH1, PATH2, STATUS)
  37    CHARACTER(len=*), INTENT(IN) :: PATH1, PATH2
  38    INTEGER, INTENT(OUT), OPTIONAL :: STATUS  */
  39
  40 extern void rename_i4_sub (char *, char *, GFC_INTEGER_4 *, gfc_charlen_type,
  41                            gfc_charlen_type);
  42 iexport_proto(rename_i4_sub);
  43
  44 void
  45 rename_i4_sub (char *path1, char *path2, GFC_INTEGER_4 *status,
  46                gfc_charlen_type path1_len, gfc_charlen_type path2_len)
  47 {
  48   int val;
  49   char *str1, *str2;
  50
  51   /* Trim trailing spaces from paths.  */
  52   while (path1_len > 0 && path1[path1_len - 1] == ' ')
  53     path1_len--;
  54   while (path2_len > 0 && path2[path2_len - 1] == ' ')
  55     path2_len--;
  56
  57   /* Make a null terminated copy of the strings.  */
  58   str1 = gfc_alloca (path1_len + 1);
  59   memcpy (str1, path1, path1_len);
  60   str1[path1_len] = '\0';
  61
  62   str2 = gfc_alloca (path2_len + 1);
  63   memcpy (str2, path2, path2_len);
  64   str2[path2_len] = '\0';
  65
  66   val = rename (str1, str2);
  67
  68   if (status != NULL)
  69     *status = (val == 0) ? 0 : errno;
  70 }
  71 iexport(rename_i4_sub);
  72
  73 extern void rename_i8_sub (char *, char *, GFC_INTEGER_8 *, gfc_charlen_type,
  74                            gfc_charlen_type);
  75 iexport_proto(rename_i8_sub);
  76
  77 void
  78 rename_i8_sub (char *path1, char *path2, GFC_INTEGER_8 *status,
  79                gfc_charlen_type path1_len, gfc_charlen_type path2_len)
  80 {
  81   int val;
  82   char *str1, *str2;
  83
  84   /* Trim trailing spaces from paths.  */
  85   while (path1_len > 0 && path1[path1_len - 1] == ' ')
  86     path1_len--;
  87   while (path2_len > 0 && path2[path2_len - 1] == ' ')
  88     path2_len--;
  89
  90   /* Make a null terminated copy of the strings.  */
  91   str1 = gfc_alloca (path1_len + 1);
  92   memcpy (str1, path1, path1_len);
  93   str1[path1_len] = '\0';
  94
  95   str2 = gfc_alloca (path2_len + 1);
  96   memcpy (str2, path2, path2_len);
  97   str2[path2_len] = '\0';
  98
  99   val = rename (str1, str2);
 100
 101   if (status != NULL)
 102     *status = (val == 0) ? 0 : errno;
 103 }
 104 iexport(rename_i8_sub);
 105
 106 extern GFC_INTEGER_4 rename_i4 (char *, char *, gfc_charlen_type,
 107                                 gfc_charlen_type);
 108 export_proto(rename_i4);
 109
 110 GFC_INTEGER_4
 111 rename_i4 (char *path1, char *path2, gfc_charlen_type path1_len,
 112            gfc_charlen_type path2_len)
 113 {
 114   GFC_INTEGER_4 val;
 115   rename_i4_sub (path1, path2, &val, path1_len, path2_len);
 116   return val;
 117 }
 118
 119 extern GFC_INTEGER_8 rename_i8 (char *, char *, gfc_charlen_type,
 120                                 gfc_charlen_type);
 121 export_proto(rename_i8);
 122
 123 GFC_INTEGER_8
 124 rename_i8 (char *path1, char *path2, gfc_charlen_type path1_len,
 125            gfc_charlen_type path2_len)
 126 {
 127   GFC_INTEGER_8 val;
 128   rename_i8_sub (path1, path2, &val, path1_len, path2_len);
 129   return val;
 130 }