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scm_strptime.c
183 lines (158 loc) · 5.6 KB
/
scm_strptime.c
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/* Copyright (C) 1995,1996,1997,1998, 1999, 2000 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
#include <stdio.h>
#include "libguile/__scm.h"
#include "libguile.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
# ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
# endif
# ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
# else
# ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# ifdef HAVE_TIME_H
# include <time.h>
# endif
# endif
# endif
#ifdef HAVE_SYS_TIMES_H
# include <sys/times.h>
#endif
#ifdef HAVE_SYS_TIMEB_H
# include <sys/timeb.h>
#endif
#ifndef tzname /* For SGI. */
extern char *tzname[]; /* RS6000 and others reject char **tzname. */
#endif
#ifdef MISSING_STRPTIME_DECL
extern char *strptime ();
#endif
/* This should be figured out by autoconf. */
#if ! defined(CLKTCK) && defined(CLK_TCK)
# define CLKTCK CLK_TCK
#endif
#if ! defined(CLKTCK) && defined(CLOCKS_PER_SEC)
# define CLKTCK CLOCKS_PER_SEC
#endif
#if ! defined(CLKTCK)
# define CLKTCK 60
#endif
#include "strptime.h"
#ifdef __STDC__
# define timet time_t
#else
# define timet long
#endif
static SCM
filltime (struct tm *bd_time, int zoff, char *zname);
static SCM
filltime (struct tm *bd_time, int zoff, char *zname)
{
SCM result = scm_make_vector (SCM_MAKINUM(11), SCM_UNDEFINED);
SCM_VELTS (result)[0] = SCM_MAKINUM (bd_time->tm_sec);
SCM_VELTS (result)[1] = SCM_MAKINUM (bd_time->tm_min);
SCM_VELTS (result)[2] = SCM_MAKINUM (bd_time->tm_hour);
SCM_VELTS (result)[3] = SCM_MAKINUM (bd_time->tm_mday);
SCM_VELTS (result)[4] = SCM_MAKINUM (bd_time->tm_mon);
SCM_VELTS (result)[5] = SCM_MAKINUM (bd_time->tm_year);
SCM_VELTS (result)[6] = SCM_MAKINUM (bd_time->tm_wday);
SCM_VELTS (result)[7] = SCM_MAKINUM (bd_time->tm_yday);
SCM_VELTS (result)[8] = SCM_MAKINUM (bd_time->tm_isdst);
SCM_VELTS (result)[9] = SCM_MAKINUM (zoff);
SCM_VELTS (result)[10] = zname ? scm_makfrom0str (zname) : SCM_BOOL_F;
return result;
}
#ifndef HAVE_STRPTIME
SCM_DEFINE (scm_strptime, "strptime", 2, 0, 0,
(SCM format, SCM string),
"Performs the reverse action to @code{strftime}, parsing @var{string}\n"
"according to the specification supplied in @var{template}. The\n"
"interpretation of month and day names is dependent on the current\n"
"locale. The\n"
"value returned is a pair. The CAR has an object with time components \n"
"in the form returned by @code{localtime} or @code{gmtime},\n"
"but the time zone components\n"
"are not usefully set.\n"
"The CDR reports the number of characters from @var{string} which\n"
"vwere used for the conversion.")
#define FUNC_NAME s_scm_strptime
{
struct tm t;
char *fmt, *str, *rest;
SCM_VALIDATE_ROSTRING (1, format);
SCM_VALIDATE_ROSTRING (2, string);
SCM_COERCE_SUBSTR (format);
SCM_COERCE_SUBSTR (string);
fmt = SCM_ROCHARS (format);
str = SCM_ROCHARS (string);
/* initialize the struct tm */
#define tm_init(field) t.field = 0
tm_init (tm_sec);
tm_init (tm_min);
tm_init (tm_hour);
tm_init (tm_mday);
tm_init (tm_mon);
tm_init (tm_year);
tm_init (tm_wday);
tm_init (tm_yday);
#undef tm_init
t.tm_isdst = -1;
SCM_DEFER_INTS;
if ((rest = strptime (str, fmt, &t)) == NULL)
SCM_SYSERROR;
SCM_ALLOW_INTS;
return scm_cons (filltime (&t, 0, NULL), SCM_MAKINUM (rest - str));
}
#undef FUNC_NAME
#endif /* HAVE_STRPTIME */
/*
Local Variables:
c-file-style: "gnu"
End:
*/