libgfortran/intrinsics/ctime.c

   1 /* Implementation of the CTIME and FDATE g77 intrinsics.
   2    Copyright (C) 2005, 2007, 2009 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 #ifdef TIME_WITH_SYS_TIME
  29 #  include <sys/time.h>
  30 #  include <time.h>
  31 #else
  32 #  if HAVE_SYS_TIME_H
  33 #    include <sys/time.h>
  34 #  else
  35 #    ifdef HAVE_TIME_H
  36 #      include <time.h>
  37 #    endif
  38 #  endif
  39 #endif
  40
  41 #include <string.h>
  42
  43
  44 extern void fdate (char **, gfc_charlen_type *);
  45 export_proto(fdate);
  46
  47 void
  48 fdate (char ** date, gfc_charlen_type * date_len)
  49 {
  50 #if defined(HAVE_TIME) && defined(HAVE_CTIME)
  51   int i;
  52   time_t now = time(NULL);
  53   *date = ctime (&now);
  54   if (*date != NULL)
  55     {
  56       *date = strdup (*date);
  57       *date_len = strlen (*date);
  58
  59       i = 0;
  60       while ((*date)[i])
  61        {
  62          if ((*date)[i] == '\n')
  63            (*date)[i] = ' ';
  64          i++;
  65        }
  66       return;
  67     }
  68 #endif
  69
  70   *date = NULL;
  71   *date_len = 0;
  72 }
  73
  74
  75 extern void fdate_sub (char *, gfc_charlen_type);
  76 export_proto(fdate_sub);
  77
  78 void
  79 fdate_sub (char * date, gfc_charlen_type date_len)
  80 {
  81 #if defined(HAVE_TIME) && defined(HAVE_CTIME)
  82   int i;
  83   char *d;
  84   time_t now = time(NULL);
  85 #endif
  86
  87   memset (date, ' ', date_len);
  88 #if defined(HAVE_TIME) && defined(HAVE_CTIME)
  89   d = ctime (&now);
  90   if (d != NULL)
  91     {
  92       i = 0;
  93       while (*d && *d != '\n' && i < date_len)
  94        date[i++] = *(d++);
  95     }
  96 #endif
  97 }
  98
  99
 100
 101 extern void PREFIX(ctime) (char **, gfc_charlen_type *, GFC_INTEGER_8);
 102 export_proto_np(PREFIX(ctime));
 103
 104 void
 105 PREFIX(ctime) (char ** date, gfc_charlen_type * date_len, GFC_INTEGER_8 t)
 106 {
 107 #if defined(HAVE_CTIME)
 108   time_t now = t;
 109   int i;
 110   *date = ctime (&now);
 111   if (*date != NULL)
 112     {
 113       *date = strdup (*date);
 114       *date_len = strlen (*date);
 115
 116       i = 0;
 117       while ((*date)[i])
 118        {
 119          if ((*date)[i] == '\n')
 120            (*date)[i] = ' ';
 121          i++;
 122        }
 123       return;
 124     }
 125 #endif
 126
 127   *date = NULL;
 128   *date_len = 0;
 129 }
 130
 131
 132 extern void ctime_sub (GFC_INTEGER_8 *, char *, gfc_charlen_type);
 133 export_proto(ctime_sub);
 134
 135 void
 136 ctime_sub (GFC_INTEGER_8 * t, char * date, gfc_charlen_type date_len)
 137 {
 138 #if defined(HAVE_CTIME)
 139   int i;
 140   char *d;
 141   time_t now = *t;
 142 #endif
 143
 144   memset (date, ' ', date_len);
 145 #if defined(HAVE_CTIME)
 146   d = ctime (&now);
 147   if (d != NULL)
 148     {
 149       i = 0;
 150       while (*d && *d != '\n' && i < date_len)
 151        date[i++] = *(d++);
 152     }
 153 #endif
 154 }