libgfortran/intrinsics/ctime.c

   1 /* Implementation of the CTIME and FDATE g77 intrinsics.
   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 #ifdef TIME_WITH_SYS_TIME
  34 #  include <sys/time.h>
  35 #  include <time.h>
  36 #else
  37 #  if HAVE_SYS_TIME_H
  38 #    include <sys/time.h>
  39 #  else
  40 #    ifdef HAVE_TIME_H
  41 #      include <time.h>
  42 #    endif
  43 #  endif
  44 #endif
  45
  46 #include <string.h>
  47
  48
  49 extern void fdate (char **, gfc_charlen_type *);
  50 export_proto(fdate);
  51
  52 void
  53 fdate (char ** date, gfc_charlen_type * date_len)
  54 {
  55 #if defined(HAVE_TIME) && defined(HAVE_CTIME)
  56   int i;
  57   time_t now = time(NULL);
  58   *date = ctime (&now);
  59   if (*date != NULL)
  60     {
  61       *date = strdup (*date);
  62       *date_len = strlen (*date);
  63
  64       i = 0;
  65       while ((*date)[i])
  66        {
  67          if ((*date)[i] == '\n')
  68            (*date)[i] = ' ';
  69          i++;
  70        }
  71       return;
  72     }
  73 #endif
  74
  75   *date = NULL;
  76   *date_len = 0;
  77 }
  78
  79
  80 extern void fdate_sub (char *, gfc_charlen_type);
  81 export_proto(fdate_sub);
  82
  83 void
  84 fdate_sub (char * date, gfc_charlen_type date_len)
  85 {
  86 #if defined(HAVE_TIME) && defined(HAVE_CTIME)
  87   int i;
  88   char *d;
  89   time_t now = time(NULL);
  90 #endif
  91
  92   memset (date, ' ', date_len);
  93 #if defined(HAVE_TIME) && defined(HAVE_CTIME)
  94   d = ctime (&now);
  95   if (d != NULL)
  96     {
  97       i = 0;
  98       while (*d && *d != '\n' && i < date_len)
  99        date[i++] = *(d++);
 100     }
 101 #endif
 102 }
 103
 104
 105
 106 extern void PREFIX(ctime) (char **, gfc_charlen_type *, GFC_INTEGER_8);
 107 export_proto_np(PREFIX(ctime));
 108
 109 void
 110 PREFIX(ctime) (char ** date, gfc_charlen_type * date_len, GFC_INTEGER_8 t)
 111 {
 112 #if defined(HAVE_CTIME)
 113   time_t now = t;
 114   int i;
 115   *date = ctime (&now);
 116   if (*date != NULL)
 117     {
 118       *date = strdup (*date);
 119       *date_len = strlen (*date);
 120
 121       i = 0;
 122       while ((*date)[i])
 123        {
 124          if ((*date)[i] == '\n')
 125            (*date)[i] = ' ';
 126          i++;
 127        }
 128       return;
 129     }
 130 #endif
 131
 132   *date = NULL;
 133   *date_len = 0;
 134 }
 135
 136
 137 extern void ctime_sub (GFC_INTEGER_8 *, char *, gfc_charlen_type);
 138 export_proto(ctime_sub);
 139
 140 void
 141 ctime_sub (GFC_INTEGER_8 * t, char * date, gfc_charlen_type date_len)
 142 {
 143 #if defined(HAVE_CTIME)
 144   int i;
 145   char *d;
 146   time_t now = *t;
 147 #endif
 148
 149   memset (date, ' ', date_len);
 150 #if defined(HAVE_CTIME)
 151   d = ctime (&now);
 152   if (d != NULL)
 153     {
 154       i = 0;
 155       while (*d && *d != '\n' && i < date_len)
 156        date[i++] = *(d++);
 157     }
 158 #endif
 159 }