673 lines
16 KiB
C
673 lines
16 KiB
C
/* Implementation of the DATE_AND_TIME intrinsic.
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Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011
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Free Software Foundation, Inc.
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Contributed by Steven Bosscher.
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This file is part of the GNU Fortran runtime library (libgfortran).
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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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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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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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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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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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "libgfortran.h"
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#include <string.h>
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#include <assert.h>
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#include <stdlib.h>
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#include "time_1.h"
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#ifndef abs
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#define abs(x) ((x)>=0 ? (x) : -(x))
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#endif
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/* If the re-entrant version of gmtime is not available, provide a
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fallback implementation. On some targets where the _r version is
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not available, gmtime uses thread-local storage so it's
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threadsafe. */
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#ifndef HAVE_GMTIME_R
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/* If _POSIX is defined gmtime_r gets defined by mingw-w64 headers. */
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#ifdef gmtime_r
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#undef gmtime_r
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#endif
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static struct tm *
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gmtime_r (const time_t * timep, struct tm * result)
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{
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*result = *gmtime (timep);
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return result;
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}
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#endif
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/* DATE_AND_TIME ([DATE, TIME, ZONE, VALUES])
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Description: Returns data on the real-time clock and date in a form
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compatible with the representations defined in ISO 8601:1988.
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Class: Non-elemental subroutine.
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Arguments:
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DATE (optional) shall be scalar and of type default character.
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It is an INTENT(OUT) argument. It is assigned a value of the
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form CCYYMMDD, where CC is the century, YY the year within the
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century, MM the month within the year, and DD the day within the
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month. If there is no date available, they are assigned blanks.
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TIME (optional) shall be scalar and of type default character.
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It is an INTENT(OUT) argument. It is assigned a value of the
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form hhmmss.sss, where hh is the hour of the day, mm is the
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minutes of the hour, and ss.sss is the seconds and milliseconds
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of the minute. If there is no clock available, they are assigned
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blanks.
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ZONE (optional) shall be scalar and of type default character.
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It is an INTENT(OUT) argument. It is assigned a value of the
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form [+-]hhmm, where hh and mm are the time difference with
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respect to Coordinated Universal Time (UTC) in hours and parts
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of an hour expressed in minutes, respectively. If there is no
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clock available, they are assigned blanks.
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VALUES (optional) shall be of type default integer and of rank
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one. It is an INTENT(OUT) argument. Its size shall be at least
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8. The values returned in VALUES are as follows:
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VALUES(1) the year (for example, 2003), or -HUGE(0) if there is
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no date available;
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VALUES(2) the month of the year, or -HUGE(0) if there
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is no date available;
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VALUES(3) the day of the month, or -HUGE(0) if there is no date
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available;
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VALUES(4) the time difference with respect to Coordinated
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Universal Time (UTC) in minutes, or -HUGE(0) if this information
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is not available;
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VALUES(5) the hour of the day, in the range of 0 to 23, or
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-HUGE(0) if there is no clock;
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VALUES(6) the minutes of the hour, in the range 0 to 59, or
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-HUGE(0) if there is no clock;
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VALUES(7) the seconds of the minute, in the range 0 to 60, or
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-HUGE(0) if there is no clock;
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VALUES(8) the milliseconds of the second, in the range 0 to
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999, or -HUGE(0) if there is no clock.
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NULL pointer represent missing OPTIONAL arguments. All arguments
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have INTENT(OUT). Because of the -i8 option, we must implement
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VALUES for INTEGER(kind=4) and INTEGER(kind=8).
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Based on libU77's date_time_.c.
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TODO :
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- Check year boundaries.
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*/
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#define DATE_LEN 8
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#define TIME_LEN 10
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#define ZONE_LEN 5
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#define VALUES_SIZE 8
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extern void date_and_time (char *, char *, char *, gfc_array_i4 *,
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GFC_INTEGER_4, GFC_INTEGER_4, GFC_INTEGER_4);
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export_proto(date_and_time);
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void
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date_and_time (char *__date, char *__time, char *__zone,
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gfc_array_i4 *__values, GFC_INTEGER_4 __date_len,
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GFC_INTEGER_4 __time_len, GFC_INTEGER_4 __zone_len)
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{
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int i;
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char date[DATE_LEN + 1];
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char timec[TIME_LEN + 1];
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char zone[ZONE_LEN + 1];
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GFC_INTEGER_4 values[VALUES_SIZE];
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#ifndef HAVE_NO_DATE_TIME
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time_t lt;
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struct tm local_time;
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struct tm UTC_time;
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long usecs;
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if (!gf_gettime (<, &usecs))
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{
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values[7] = usecs / 1000;
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localtime_r (<, &local_time);
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gmtime_r (<, &UTC_time);
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/* All arguments can be derived from VALUES. */
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values[0] = 1900 + local_time.tm_year;
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values[1] = 1 + local_time.tm_mon;
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values[2] = local_time.tm_mday;
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values[3] = (local_time.tm_min - UTC_time.tm_min +
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60 * (local_time.tm_hour - UTC_time.tm_hour +
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24 * (local_time.tm_yday - UTC_time.tm_yday)));
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values[4] = local_time.tm_hour;
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values[5] = local_time.tm_min;
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values[6] = local_time.tm_sec;
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#if HAVE_SNPRINTF
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if (__date)
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snprintf (date, DATE_LEN + 1, "%04d%02d%02d",
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values[0], values[1], values[2]);
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if (__time)
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snprintf (timec, TIME_LEN + 1, "%02d%02d%02d.%03d",
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values[4], values[5], values[6], values[7]);
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if (__zone)
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snprintf (zone, ZONE_LEN + 1, "%+03d%02d",
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values[3] / 60, abs (values[3] % 60));
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#else
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if (__date)
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sprintf (date, "%04d%02d%02d", values[0], values[1], values[2]);
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if (__time)
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sprintf (timec, "%02d%02d%02d.%03d",
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values[4], values[5], values[6], values[7]);
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if (__zone)
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sprintf (zone, "%+03d%02d",
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values[3] / 60, abs (values[3] % 60));
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#endif
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}
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else
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{
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memset (date, ' ', DATE_LEN);
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date[DATE_LEN] = '\0';
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memset (timec, ' ', TIME_LEN);
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timec[TIME_LEN] = '\0';
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memset (zone, ' ', ZONE_LEN);
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zone[ZONE_LEN] = '\0';
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for (i = 0; i < VALUES_SIZE; i++)
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values[i] = - GFC_INTEGER_4_HUGE;
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}
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#else /* if defined HAVE_NO_DATE_TIME */
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/* We really have *nothing* to return, so return blanks and HUGE(0). */
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memset (date, ' ', DATE_LEN);
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date[DATE_LEN] = '\0';
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memset (timec, ' ', TIME_LEN);
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timec[TIME_LEN] = '\0';
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memset (zone, ' ', ZONE_LEN);
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zone[ZONE_LEN] = '\0';
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for (i = 0; i < VALUES_SIZE; i++)
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values[i] = - GFC_INTEGER_4_HUGE;
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#endif /* HAVE_NO_DATE_TIME */
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/* Copy the values into the arguments. */
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if (__values)
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{
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index_type len, delta, elt_size;
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elt_size = GFC_DESCRIPTOR_SIZE (__values);
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len = GFC_DESCRIPTOR_EXTENT(__values,0);
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delta = GFC_DESCRIPTOR_STRIDE(__values,0);
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if (delta == 0)
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delta = 1;
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if (unlikely (len < VALUES_SIZE))
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runtime_error ("Incorrect extent in VALUE argument to"
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" DATE_AND_TIME intrinsic: is %ld, should"
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" be >=%ld", (long int) len, (long int) VALUES_SIZE);
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/* Cope with different type kinds. */
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if (elt_size == 4)
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{
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GFC_INTEGER_4 *vptr4 = __values->data;
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for (i = 0; i < VALUES_SIZE; i++, vptr4 += delta)
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*vptr4 = values[i];
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}
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else if (elt_size == 8)
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{
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GFC_INTEGER_8 *vptr8 = (GFC_INTEGER_8 *)__values->data;
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for (i = 0; i < VALUES_SIZE; i++, vptr8 += delta)
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{
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if (values[i] == - GFC_INTEGER_4_HUGE)
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*vptr8 = - GFC_INTEGER_8_HUGE;
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else
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*vptr8 = values[i];
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}
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}
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else
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abort ();
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}
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if (__zone)
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fstrcpy (__zone, __zone_len, zone, ZONE_LEN);
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if (__time)
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fstrcpy (__time, __time_len, timec, TIME_LEN);
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if (__date)
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fstrcpy (__date, __date_len, date, DATE_LEN);
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}
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/* SECNDS (X) - Non-standard
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Description: Returns the system time of day, or elapsed time, as a GFC_REAL_4
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in seconds.
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Class: Non-elemental subroutine.
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Arguments:
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X must be REAL(4) and the result is of the same type. The accuracy is system
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dependent.
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Usage:
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T = SECNDS (X)
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yields the time in elapsed seconds since X. If X is 0.0, T is the time in
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seconds since midnight. Note that a time that spans midnight but is less than
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24hours will be calculated correctly. */
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extern GFC_REAL_4 secnds (GFC_REAL_4 *);
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export_proto(secnds);
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GFC_REAL_4
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secnds (GFC_REAL_4 *x)
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{
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GFC_INTEGER_4 values[VALUES_SIZE];
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GFC_REAL_4 temp1, temp2;
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/* Make the INTEGER*4 array for passing to date_and_time. */
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gfc_array_i4 *avalues = internal_malloc_size (sizeof (gfc_array_i4));
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avalues->data = &values[0];
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GFC_DESCRIPTOR_DTYPE (avalues) = ((BT_REAL << GFC_DTYPE_TYPE_SHIFT)
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& GFC_DTYPE_TYPE_MASK) +
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(4 << GFC_DTYPE_SIZE_SHIFT);
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GFC_DIMENSION_SET(avalues->dim[0], 0, 7, 1);
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date_and_time (NULL, NULL, NULL, avalues, 0, 0, 0);
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free (avalues);
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temp1 = 3600.0 * (GFC_REAL_4)values[4] +
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60.0 * (GFC_REAL_4)values[5] +
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(GFC_REAL_4)values[6] +
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0.001 * (GFC_REAL_4)values[7];
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temp2 = fmod (*x, 86400.0);
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temp2 = (temp1 - temp2 >= 0.0) ? temp2 : (temp2 - 86400.0);
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return temp1 - temp2;
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}
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/* ITIME(X) - Non-standard
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Description: Returns the current local time hour, minutes, and seconds
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in elements 1, 2, and 3 of X, respectively. */
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static void
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itime0 (int x[3])
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{
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#ifndef HAVE_NO_DATE_TIME
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time_t lt;
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struct tm local_time;
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lt = time (NULL);
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if (lt != (time_t) -1)
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{
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localtime_r (<, &local_time);
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x[0] = local_time.tm_hour;
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x[1] = local_time.tm_min;
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x[2] = local_time.tm_sec;
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}
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#else
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x[0] = x[1] = x[2] = -1;
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#endif
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}
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extern void itime_i4 (gfc_array_i4 *);
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export_proto(itime_i4);
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void
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itime_i4 (gfc_array_i4 *__values)
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{
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int x[3], i;
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index_type len, delta;
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GFC_INTEGER_4 *vptr;
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/* Call helper function. */
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itime0(x);
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/* Copy the value into the array. */
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len = GFC_DESCRIPTOR_EXTENT(__values,0);
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assert (len >= 3);
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delta = GFC_DESCRIPTOR_STRIDE(__values,0);
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if (delta == 0)
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delta = 1;
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vptr = __values->data;
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for (i = 0; i < 3; i++, vptr += delta)
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*vptr = x[i];
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}
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extern void itime_i8 (gfc_array_i8 *);
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export_proto(itime_i8);
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void
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itime_i8 (gfc_array_i8 *__values)
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{
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int x[3], i;
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index_type len, delta;
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GFC_INTEGER_8 *vptr;
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/* Call helper function. */
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itime0(x);
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/* Copy the value into the array. */
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len = GFC_DESCRIPTOR_EXTENT(__values,0);
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assert (len >= 3);
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delta = GFC_DESCRIPTOR_STRIDE(__values,0);
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if (delta == 0)
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delta = 1;
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vptr = __values->data;
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for (i = 0; i < 3; i++, vptr += delta)
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*vptr = x[i];
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}
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/* IDATE(X) - Non-standard
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Description: Fills TArray with the numerical values at the current
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local time. The day (in the range 1-31), month (in the range 1-12),
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and year appear in elements 1, 2, and 3 of X, respectively.
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The year has four significant digits. */
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static void
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idate0 (int x[3])
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{
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#ifndef HAVE_NO_DATE_TIME
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time_t lt;
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struct tm local_time;
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lt = time (NULL);
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if (lt != (time_t) -1)
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{
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localtime_r (<, &local_time);
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x[0] = local_time.tm_mday;
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x[1] = 1 + local_time.tm_mon;
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x[2] = 1900 + local_time.tm_year;
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}
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#else
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x[0] = x[1] = x[2] = -1;
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#endif
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}
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extern void idate_i4 (gfc_array_i4 *);
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export_proto(idate_i4);
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void
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idate_i4 (gfc_array_i4 *__values)
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{
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int x[3], i;
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index_type len, delta;
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GFC_INTEGER_4 *vptr;
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/* Call helper function. */
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idate0(x);
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/* Copy the value into the array. */
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len = GFC_DESCRIPTOR_EXTENT(__values,0);
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assert (len >= 3);
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delta = GFC_DESCRIPTOR_STRIDE(__values,0);
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if (delta == 0)
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delta = 1;
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vptr = __values->data;
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for (i = 0; i < 3; i++, vptr += delta)
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*vptr = x[i];
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}
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extern void idate_i8 (gfc_array_i8 *);
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export_proto(idate_i8);
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void
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idate_i8 (gfc_array_i8 *__values)
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{
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int x[3], i;
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index_type len, delta;
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GFC_INTEGER_8 *vptr;
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/* Call helper function. */
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idate0(x);
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/* Copy the value into the array. */
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len = GFC_DESCRIPTOR_EXTENT(__values,0);
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assert (len >= 3);
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delta = GFC_DESCRIPTOR_STRIDE(__values,0);
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if (delta == 0)
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delta = 1;
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vptr = __values->data;
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for (i = 0; i < 3; i++, vptr += delta)
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*vptr = x[i];
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}
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/* GMTIME(STIME, TARRAY) - Non-standard
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Description: Given a system time value STime, fills TArray with values
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extracted from it appropriate to the GMT time zone using gmtime_r(3).
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The array elements are as follows:
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1. Seconds after the minute, range 0-59 or 0-61 to allow for leap seconds
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2. Minutes after the hour, range 0-59
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3. Hours past midnight, range 0-23
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4. Day of month, range 0-31
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5. Number of months since January, range 0-11
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6. Years since 1900
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7. Number of days since Sunday, range 0-6
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8. Days since January 1
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9. Daylight savings indicator: positive if daylight savings is in effect,
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zero if not, and negative if the information isn't available. */
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static void
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gmtime_0 (const time_t * t, int x[9])
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{
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struct tm lt;
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gmtime_r (t, <);
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x[0] = lt.tm_sec;
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x[1] = lt.tm_min;
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x[2] = lt.tm_hour;
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x[3] = lt.tm_mday;
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x[4] = lt.tm_mon;
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x[5] = lt.tm_year;
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x[6] = lt.tm_wday;
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x[7] = lt.tm_yday;
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x[8] = lt.tm_isdst;
|
|
}
|
|
|
|
extern void gmtime_i4 (GFC_INTEGER_4 *, gfc_array_i4 *);
|
|
export_proto(gmtime_i4);
|
|
|
|
void
|
|
gmtime_i4 (GFC_INTEGER_4 * t, gfc_array_i4 * tarray)
|
|
{
|
|
int x[9], i;
|
|
index_type len, delta;
|
|
GFC_INTEGER_4 *vptr;
|
|
time_t tt;
|
|
|
|
/* Call helper function. */
|
|
tt = (time_t) *t;
|
|
gmtime_0(&tt, x);
|
|
|
|
/* Copy the values into the array. */
|
|
len = GFC_DESCRIPTOR_EXTENT(tarray,0);
|
|
assert (len >= 9);
|
|
delta = GFC_DESCRIPTOR_STRIDE(tarray,0);
|
|
if (delta == 0)
|
|
delta = 1;
|
|
|
|
vptr = tarray->data;
|
|
for (i = 0; i < 9; i++, vptr += delta)
|
|
*vptr = x[i];
|
|
}
|
|
|
|
extern void gmtime_i8 (GFC_INTEGER_8 *, gfc_array_i8 *);
|
|
export_proto(gmtime_i8);
|
|
|
|
void
|
|
gmtime_i8 (GFC_INTEGER_8 * t, gfc_array_i8 * tarray)
|
|
{
|
|
int x[9], i;
|
|
index_type len, delta;
|
|
GFC_INTEGER_8 *vptr;
|
|
time_t tt;
|
|
|
|
/* Call helper function. */
|
|
tt = (time_t) *t;
|
|
gmtime_0(&tt, x);
|
|
|
|
/* Copy the values into the array. */
|
|
len = GFC_DESCRIPTOR_EXTENT(tarray,0);
|
|
assert (len >= 9);
|
|
delta = GFC_DESCRIPTOR_STRIDE(tarray,0);
|
|
if (delta == 0)
|
|
delta = 1;
|
|
|
|
vptr = tarray->data;
|
|
for (i = 0; i < 9; i++, vptr += delta)
|
|
*vptr = x[i];
|
|
}
|
|
|
|
|
|
|
|
|
|
/* LTIME(STIME, TARRAY) - Non-standard
|
|
|
|
Description: Given a system time value STime, fills TArray with values
|
|
extracted from it appropriate to the local time zone using localtime_r(3).
|
|
|
|
The array elements are as follows:
|
|
|
|
1. Seconds after the minute, range 0-59 or 0-61 to allow for leap seconds
|
|
2. Minutes after the hour, range 0-59
|
|
3. Hours past midnight, range 0-23
|
|
4. Day of month, range 0-31
|
|
5. Number of months since January, range 0-11
|
|
6. Years since 1900
|
|
7. Number of days since Sunday, range 0-6
|
|
8. Days since January 1
|
|
9. Daylight savings indicator: positive if daylight savings is in effect,
|
|
zero if not, and negative if the information isn't available. */
|
|
|
|
static void
|
|
ltime_0 (const time_t * t, int x[9])
|
|
{
|
|
struct tm lt;
|
|
|
|
localtime_r (t, <);
|
|
x[0] = lt.tm_sec;
|
|
x[1] = lt.tm_min;
|
|
x[2] = lt.tm_hour;
|
|
x[3] = lt.tm_mday;
|
|
x[4] = lt.tm_mon;
|
|
x[5] = lt.tm_year;
|
|
x[6] = lt.tm_wday;
|
|
x[7] = lt.tm_yday;
|
|
x[8] = lt.tm_isdst;
|
|
}
|
|
|
|
extern void ltime_i4 (GFC_INTEGER_4 *, gfc_array_i4 *);
|
|
export_proto(ltime_i4);
|
|
|
|
void
|
|
ltime_i4 (GFC_INTEGER_4 * t, gfc_array_i4 * tarray)
|
|
{
|
|
int x[9], i;
|
|
index_type len, delta;
|
|
GFC_INTEGER_4 *vptr;
|
|
time_t tt;
|
|
|
|
/* Call helper function. */
|
|
tt = (time_t) *t;
|
|
ltime_0(&tt, x);
|
|
|
|
/* Copy the values into the array. */
|
|
len = GFC_DESCRIPTOR_EXTENT(tarray,0);
|
|
assert (len >= 9);
|
|
delta = GFC_DESCRIPTOR_STRIDE(tarray,0);
|
|
if (delta == 0)
|
|
delta = 1;
|
|
|
|
vptr = tarray->data;
|
|
for (i = 0; i < 9; i++, vptr += delta)
|
|
*vptr = x[i];
|
|
}
|
|
|
|
extern void ltime_i8 (GFC_INTEGER_8 *, gfc_array_i8 *);
|
|
export_proto(ltime_i8);
|
|
|
|
void
|
|
ltime_i8 (GFC_INTEGER_8 * t, gfc_array_i8 * tarray)
|
|
{
|
|
int x[9], i;
|
|
index_type len, delta;
|
|
GFC_INTEGER_8 *vptr;
|
|
time_t tt;
|
|
|
|
/* Call helper function. */
|
|
tt = (time_t) * t;
|
|
ltime_0(&tt, x);
|
|
|
|
/* Copy the values into the array. */
|
|
len = GFC_DESCRIPTOR_EXTENT(tarray,0);
|
|
assert (len >= 9);
|
|
delta = GFC_DESCRIPTOR_STRIDE(tarray,0);
|
|
if (delta == 0)
|
|
delta = 1;
|
|
|
|
vptr = tarray->data;
|
|
for (i = 0; i < 9; i++, vptr += delta)
|
|
*vptr = x[i];
|
|
}
|
|
|
|
|