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ruby/time.c

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/**********************************************************************
time.c -
$Author$
$Date$
created at: Tue Dec 28 14:31:59 JST 1993
Copyright (C) 1993-2001 Yukihiro Matsumoto
**********************************************************************/
#include "ruby.h"
#include <sys/types.h>
#include <time.h>
#ifndef NT
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#else
#define time_t long
struct timeval {
time_t tv_sec; /* seconds */
time_t tv_usec; /* and microseconds */
};
#endif
#endif /* NT */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
VALUE rb_cTime;
struct time_object {
struct timeval tv;
struct tm tm;
int gmt;
int tm_got;
};
#define GetTimeval(obj, tobj) {\
Data_Get_Struct(obj, struct time_object, tobj);\
}
static VALUE
time_s_now(klass)
VALUE klass;
{
VALUE obj;
struct time_object *tobj;
obj = Data_Make_Struct(klass, struct time_object, 0, free, tobj);
tobj->tm_got=0;
if (gettimeofday(&tobj->tv, 0) < 0) {
rb_sys_fail("gettimeofday");
}
return obj;
}
static VALUE
time_s_new(argc, argv, klass)
int argc;
VALUE *argv;
VALUE klass;
{
VALUE obj = time_s_now(klass);
rb_obj_call_init(obj, argc, argv);
return obj;
}
static VALUE
time_new_internal(klass, sec, usec)
VALUE klass;
time_t sec, usec;
{
VALUE obj;
struct time_object *tobj;
#ifndef NEGATIVE_TIME_T
if (sec < 0 || (sec == 0 && usec < 0))
rb_raise(rb_eArgError, "time must be positive");
#endif
obj = Data_Make_Struct(klass, struct time_object, 0, free, tobj);
tobj->tm_got = 0;
tobj->tv.tv_sec = sec;
tobj->tv.tv_usec = usec;
return obj;
}
VALUE
rb_time_new(sec, usec)
time_t sec, usec;
{
return time_new_internal(rb_cTime, sec, usec);
}
static struct timeval
time_timeval(time, interval)
VALUE time;
int interval;
{
struct timeval t;
char *tstr = interval ? "time interval" : "time";
#ifndef NEGATIVE_TIME_T
interval = 1;
#endif
switch (TYPE(time)) {
case T_FIXNUM:
t.tv_sec = FIX2LONG(time);
if (interval && t.tv_sec < 0)
rb_raise(rb_eArgError, "%s must be positive", tstr);
t.tv_usec = 0;
break;
case T_FLOAT:
if (interval && RFLOAT(time)->value < 0.0)
rb_raise(rb_eArgError, "%s must be positive", tstr);
t.tv_sec = (time_t)RFLOAT(time)->value;
t.tv_usec = (time_t)((RFLOAT(time)->value - (double)t.tv_sec)*1e6);
break;
case T_BIGNUM:
t.tv_sec = NUM2LONG(time);
if (interval && t.tv_sec < 0)
rb_raise(rb_eArgError, "%s must be positive", tstr);
t.tv_usec = 0;
break;
default:
rb_raise(rb_eTypeError, "can't convert %s into %s",
rb_class2name(CLASS_OF(time)), tstr);
break;
}
return t;
}
struct timeval
rb_time_interval(time)
VALUE time;
{
return time_timeval(time, Qtrue);
}
struct timeval
rb_time_timeval(time)
VALUE time;
{
struct time_object *tobj;
struct timeval t;
if (rb_obj_is_kind_of(time, rb_cTime)) {
GetTimeval(time, tobj);
t = tobj->tv;
return t;
}
return time_timeval(time, Qfalse);
}
static VALUE
time_s_at(argc, argv, klass)
int argc;
VALUE *argv;
VALUE klass;
{
struct timeval tv;
VALUE time, t;
if (rb_scan_args(argc, argv, "11", &time, &t) == 2) {
tv.tv_sec = NUM2INT(time);
tv.tv_usec = NUM2INT(t);
}
else {
tv = rb_time_timeval(time);
}
t = time_new_internal(klass, tv.tv_sec, tv.tv_usec);
if (TYPE(time) == T_DATA) {
struct time_object *tobj, *tobj2;
GetTimeval(time, tobj);
GetTimeval(t, tobj2);
tobj2->gmt = tobj->gmt;
}
return t;
}
static char *months [12] = {
"jan", "feb", "mar", "apr", "may", "jun",
"jul", "aug", "sep", "oct", "nov", "dec",
};
static long
obj2long(obj)
VALUE obj;
{
if (TYPE(obj) == T_STRING) {
obj = rb_str2inum(obj, 10);
}
return NUM2LONG(obj);
}
static void
time_arg(argc, argv, tm, usec)
int argc;
VALUE *argv;
struct tm *tm;
time_t *usec;
{
VALUE v[7];
int i;
MEMZERO(tm, struct tm, 1);
if (argc == 10) {
v[0] = argv[5];
v[1] = argv[4];
v[2] = argv[3];
v[3] = argv[2];
v[4] = argv[1];
v[5] = argv[0];
*usec = 0;
tm->tm_isdst = RTEST(argv[9]) ? 1 : 0;
}
else {
rb_scan_args(argc, argv, "16", &v[0],&v[1],&v[2],&v[3],&v[4],&v[5],&v[6]);
*usec = (argc == 7) ? NUM2INT(v[6]) : 0;
}
tm->tm_year = obj2long(v[0]);
if (0 <= tm->tm_year && tm->tm_year < 69) tm->tm_year += 100;
if (tm->tm_year >= 1900) tm->tm_year -= 1900;
if (NIL_P(v[1])) {
tm->tm_mon = 0;
}
else if (TYPE(v[1]) == T_STRING) {
tm->tm_mon = -1;
for (i=0; i<12; i++) {
if (RSTRING(v[1])->len == 3 &&
strcasecmp(months[i], RSTRING(v[1])->ptr) == 0) {
tm->tm_mon = i;
break;
}
}
if (tm->tm_mon == -1) {
char c = RSTRING(v[1])->ptr[0];
if ('0' <= c && c <= '9') {
tm->tm_mon = obj2long(v[1])-1;
}
}
}
else {
tm->tm_mon = obj2long(v[1]) - 1;
}
if (NIL_P(v[2])) {
tm->tm_mday = 1;
}
else {
tm->tm_mday = obj2long(v[2]);
}
tm->tm_hour = NIL_P(v[3])?0:obj2long(v[3]);
tm->tm_min = NIL_P(v[4])?0:obj2long(v[4]);
tm->tm_sec = NIL_P(v[5])?0:obj2long(v[5]);
/* value validation */
if (
#ifndef NEGATIVE_TIME_T
tm->tm_year < 69 ||
#endif
tm->tm_mon < 0 || tm->tm_mon > 11
|| tm->tm_mday < 1 || tm->tm_mday > 31
|| tm->tm_hour < 0 || tm->tm_hour > 23
|| tm->tm_min < 0 || tm->tm_min > 59
|| tm->tm_sec < 0 || tm->tm_sec > 60)
rb_raise(rb_eArgError, "argument out of range");
}
static VALUE time_gmtime _((VALUE));
static VALUE time_localtime _((VALUE));
static VALUE time_get_tm _((VALUE, int));
static int
tmcmp(a, b)
struct tm *a;
struct tm *b;
{
if (a->tm_year != b->tm_year)
return a->tm_year < b->tm_year ? -1 : 1;
else if (a->tm_mon != b->tm_mon)
return a->tm_mon < b->tm_mon ? -1 : 1;
else if (a->tm_mday != b->tm_mday)
return a->tm_mday < b->tm_mday ? -1 : 1;
else if (a->tm_hour != b->tm_hour)
return a->tm_hour < b->tm_hour ? -1 : 1;
else if (a->tm_min != b->tm_min)
return a->tm_min < b->tm_min ? -1 : 1;
else if (a->tm_sec != b->tm_sec)
return a->tm_sec < b->tm_sec ? -1 : 1;
else
return 0;
}
static time_t
make_time_t(tptr, utc_p)
struct tm *tptr;
int utc_p;
{
time_t guess, guess_lo, guess_hi;
struct tm *tm, tm_lo, tm_hi;
int d;
#ifdef NEGATIVE_TIME_T
guess_lo = 1 << (8 * sizeof(time_t) - 1);
#else
guess_lo = 0;
#endif
guess_hi = ((time_t)-1) < ((time_t)0) ?
(1U << (8 * sizeof(time_t) - 1)) - 1 :
~(time_t)0;
tm = (utc_p ? gmtime : localtime)(&guess_lo);
if (!tm) goto error;
d = tmcmp(tptr, tm);
if (d < 0) goto out_of_range;
if (d == 0) return guess_lo;
tm_lo = *tm;
tm = (utc_p ? gmtime : localtime)(&guess_hi);
if (!tm) goto error;
d = tmcmp(tptr, tm);
if (d > 0) goto out_of_range;
if (d == 0) return guess_hi;
tm_hi = *tm;
while (guess_lo + 1 < guess_hi) { /* there is a gap between lo and hi. */
unsigned long range;
int a, b;
/*
Try precious guess by a linear interpolation at first.
`a' and `b' is a coefficient of guess_lo and guess_hi.
`range' is approximation of maximum error by the interpolation.
(a + b)**2 should be less than 2**31 to avoid overflow.
When these parameter is wrong, binary search is used.
*/
a = (tm_hi.tm_year - tptr->tm_year);
b = (tptr->tm_year - tm_lo.tm_year);
range = 366 * 24 * 3600;
if (a + b < 46000 / 366) {
/* 46000 is selected as `some big number less than sqrt(2**31)'. */
/* The distinction between leap/non-leap year is not important here. */
static int days[] = {
0,
0 + 31,
0 + 31 + 29,
0 + 31 + 29 + 31,
0 + 31 + 29 + 31 + 30,
0 + 31 + 29 + 31 + 30 + 31,
0 + 31 + 29 + 31 + 30 + 31 + 30,
0 + 31 + 29 + 31 + 30 + 31 + 30 + 31,
0 + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
0 + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
0 + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
0 + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30
/* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov */
};
a *= 366;
b *= 366;
d = days[tptr->tm_mon] + tptr->tm_mday;
a += days[tm_hi.tm_mon] + tm_hi.tm_mday - d;
b += d - (days[tm_lo.tm_mon] + tm_lo.tm_mday);
range = 2 * 24 * 3600;
}
if (a + b <= 1) {
range = 2;
a *= 24 * 3600;
b *= 24 * 3600;
d = tptr->tm_hour * 3600 + tptr->tm_min * 60 + tptr->tm_sec;
a += tm_hi.tm_hour * 3600 + tm_hi.tm_min * 60 + tm_hi.tm_sec - d;
b += d - (tm_lo.tm_hour * 3600 + tm_lo.tm_min * 60 + tm_lo.tm_sec);
}
if (a <= 0) a = 1;
if (b <= 0) b = 1;
d = a + b;
guess = guess_lo / d * a + guess_hi / d * b;
/* Although `%' may not work with negative value,
it doesn't cause serious problem because there is a fail safe. */
guess += ((guess_lo % d) * a + (guess_hi % d) * b) / d;
fixguess:
if (guess <= guess_lo || guess >= guess_hi) {
/* Precious guess is invalid. try binary search. */
guess = guess_lo / 2 + guess_hi / 2;
if (guess <= guess_lo)
guess = guess_lo + 1;
else if (guess >= guess_hi)
guess = guess_hi - 1;
range = 0;
}
tm = (utc_p ? gmtime : localtime)(&guess);
if (!tm) goto error;
d = tmcmp(tptr, tm);
if (d == 0) {
if (!utc_p && !tm->tm_isdst) {
/* When leaving DST, there may be two time corresponding to given
argument. make_time_t returns DST in such cases. */
/* xxx this assumes a difference in time as 3600 seconds. */
time_t guess2 = guess - 3600;
tm = localtime(&guess2);
if (!tm) return guess;
if (tmcmp(tptr, tm) == 0)
return guess2;
}
return guess;
}
else if (d < 0) {
guess_hi = guess;
tm_hi = *tm;
if (range && range < (unsigned long)(guess_hi - guess_lo)) {
guess = guess - range;
range = 0;
goto fixguess;
}
}
else {
guess_lo = guess;
tm_lo = *tm;
if (range && range < (unsigned long)(guess_hi - guess_lo)) {
guess = guess + range;
range = 0;
goto fixguess;
}
}
}
/* given time is not found. */
if (guess_lo + 1 == guess_hi) {
/* given argument is invalid: 04/29 at non-leap year for example. */
return guess_hi;
}
else {
/* given argument is in a gap. When it enters DST, for example. */
d = tptr->tm_sec - tm_lo.tm_sec;
d += (tptr->tm_min - tm_lo.tm_min) * 60;
d += (tptr->tm_hour - tm_lo.tm_hour) * 3600;
if (d < 0)
d += 24 * 3600;
return guess_hi + d - 1;
}
out_of_range:
rb_raise(rb_eArgError, "time out of range");
error:
rb_raise(rb_eArgError, "gmtime/localtime error");
return 0; /* not reached */
}
static VALUE
time_utc_or_local(argc, argv, utc_p, klass)
int argc;
VALUE *argv;
int utc_p;
VALUE klass;
{
struct tm tm;
VALUE time;
time_t usec;
time_arg(argc, argv, &tm, &usec);
time = time_new_internal(klass, make_time_t(&tm, utc_p), usec);
if (utc_p) return time_gmtime(time);
return time_localtime(time);
}
static VALUE
time_s_mkutc(argc, argv, klass)
int argc;
VALUE *argv;
VALUE klass;
{
return time_utc_or_local(argc, argv, Qtrue, klass);
}
static VALUE
time_s_mktime(argc, argv, klass)
int argc;
VALUE *argv;
VALUE klass;
{
return time_utc_or_local(argc, argv, Qfalse, klass);
}
static VALUE
time_to_i(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
return INT2NUM(tobj->tv.tv_sec);
}
static VALUE
time_to_f(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
return rb_float_new((double)tobj->tv.tv_sec+(double)tobj->tv.tv_usec/1e6);
}
static VALUE
time_usec(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
return INT2NUM(tobj->tv.tv_usec);
}
static VALUE
time_cmp(time1, time2)
VALUE time1, time2;
{
struct time_object *tobj1, *tobj2;
long i;
GetTimeval(time1, tobj1);
switch (TYPE(time2)) {
case T_FIXNUM:
i = FIX2LONG(time2);
if (tobj1->tv.tv_sec == i) return INT2FIX(0);
if (tobj1->tv.tv_sec > i) return INT2FIX(1);
return INT2FIX(-1);
case T_FLOAT:
{
double t;
t = (double)tobj1->tv.tv_sec + (double)tobj1->tv.tv_usec*1e-6;
if (t > RFLOAT(time2)->value)
return INT2FIX(1);
if (t < RFLOAT(time2)->value)
return INT2FIX(-1);
return INT2FIX(0);
}
}
if (rb_obj_is_kind_of(time2, rb_cTime)) {
GetTimeval(time2, tobj2);
if (tobj1->tv.tv_sec == tobj2->tv.tv_sec) {
if (tobj1->tv.tv_usec == tobj2->tv.tv_usec) return INT2FIX(0);
if (tobj1->tv.tv_usec > tobj2->tv.tv_usec) return INT2FIX(1);
return INT2FIX(-1);
}
if (tobj1->tv.tv_sec > tobj2->tv.tv_sec) return INT2FIX(1);
return INT2FIX(-1);
}
i = NUM2LONG(time2);
if (tobj1->tv.tv_sec == i) return INT2FIX(0);
if (tobj1->tv.tv_sec > i) return INT2FIX(1);
return INT2FIX(-1);
}
static VALUE
time_eql(time1, time2)
VALUE time1, time2;
{
struct time_object *tobj1, *tobj2;
GetTimeval(time1, tobj1);
if (rb_obj_is_kind_of(time2, rb_cTime)) {
GetTimeval(time2, tobj2);
if (tobj1->tv.tv_sec == tobj2->tv.tv_sec) {
if (tobj1->tv.tv_usec == tobj2->tv.tv_usec) return Qtrue;
}
}
return Qfalse;
}
static VALUE
time_utc_p(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->gmt) return Qtrue;
return Qfalse;
}
static VALUE
time_hash(time)
VALUE time;
{
struct time_object *tobj;
long hash;
GetTimeval(time, tobj);
hash = tobj->tv.tv_sec ^ tobj->tv.tv_usec;
return INT2FIX(hash);
}
static VALUE
time_clone(time)
VALUE time;
{
VALUE clone;
struct time_object *tobj, *tclone;
GetTimeval(time, tobj);
clone = Data_Make_Struct(0, struct time_object, 0, free, tclone);
CLONESETUP(clone, time);
MEMCPY(tclone, tobj, struct time_object, 1);
return clone;
}
static void
time_modify(time)
VALUE time;
{
if (OBJ_FROZEN(time)) rb_error_frozen("Time");
if (!OBJ_TAINTED(time) && rb_safe_level() >= 4)
rb_raise(rb_eSecurityError, "Insecure: can't modify Time");
}
static VALUE
time_localtime(time)
VALUE time;
{
struct time_object *tobj;
struct tm *tm_tmp;
time_t t;
GetTimeval(time, tobj);
if (tobj->tm_got && !tobj->gmt) {
return time;
}
time_modify(time);
t = tobj->tv.tv_sec;
tm_tmp = localtime(&t);
tobj->tm = *tm_tmp;
tobj->tm_got = 1;
tobj->gmt = 0;
return time;
}
static VALUE
time_gmtime(time)
VALUE time;
{
struct time_object *tobj;
struct tm *tm_tmp;
time_t t;
GetTimeval(time, tobj);
if (tobj->tm_got && tobj->gmt) {
return time;
}
time_modify(time);
t = tobj->tv.tv_sec;
tm_tmp = gmtime(&t);
tobj->tm = *tm_tmp;
tobj->tm_got = 1;
tobj->gmt = 1;
return time;
}
static VALUE
time_get_tm(time, gmt)
VALUE time;
int gmt;
{
if (gmt) return time_gmtime(time);
return time_localtime(time);
}
static VALUE
time_asctime(time)
VALUE time;
{
struct time_object *tobj;
char *s;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
s = asctime(&tobj->tm);
if (s[24] == '\n') s[24] = '\0';
return rb_str_new2(s);
}
static VALUE
time_to_s(time)
VALUE time;
{
struct time_object *tobj;
char buf[128];
int len;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
if (tobj->gmt == 1) {
len = strftime(buf, 128, "%a %b %d %H:%M:%S UTC %Y", &tobj->tm);
}
else {
len = strftime(buf, 128, "%a %b %d %H:%M:%S %Z %Y", &tobj->tm);
}
return rb_str_new(buf, len);
}
static VALUE
time_plus(time1, time2)
VALUE time1, time2;
{
struct time_object *tobj;
time_t sec, usec;
double f;
GetTimeval(time1, tobj);
if (rb_obj_is_kind_of(time2, rb_cTime)) {
rb_raise(rb_eTypeError, "time + time?");
}
f = NUM2DBL(time2);
sec = (time_t)f;
usec = tobj->tv.tv_usec + (time_t)((f - (double)sec)*1e6);
sec = tobj->tv.tv_sec + sec;
if (usec >= 1000000) { /* usec overflow */
sec++;
usec -= 1000000;
}
if (usec < 0) { /* usec underflow */
sec--;
usec += 1000000;
}
time2 = rb_time_new(sec, usec);
if (tobj->gmt) {
GetTimeval(time2, tobj);
tobj->gmt = 1;
}
return time2;
}
static VALUE
time_minus(time1, time2)
VALUE time1, time2;
{
struct time_object *tobj;
time_t sec, usec;
double f;
GetTimeval(time1, tobj);
if (rb_obj_is_kind_of(time2, rb_cTime)) {
struct time_object *tobj2;
GetTimeval(time2, tobj2);
f = tobj->tv.tv_sec - tobj2->tv.tv_sec;
f += (tobj->tv.tv_usec - tobj2->tv.tv_usec)*1e-6;
return rb_float_new(f);
}
else {
f = NUM2DBL(time2);
sec = (time_t)f;
usec = tobj->tv.tv_usec - (time_t)((f - (double)sec)*1e6);
sec = tobj->tv.tv_sec - sec;
}
if (usec >= 1000000) { /* usec overflow */
sec++;
usec -= 1000000;
}
if (usec < 0) { /* usec underflow */
sec--;
usec += 1000000;
}
time2 = rb_time_new(sec, usec);
if (tobj->gmt) {
GetTimeval(time2, tobj);
tobj->gmt = 1;
}
return time2;
}
static VALUE
time_sec(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return INT2FIX(tobj->tm.tm_sec);
}
static VALUE
time_min(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return INT2FIX(tobj->tm.tm_min);
}
static VALUE
time_hour(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return INT2FIX(tobj->tm.tm_hour);
}
static VALUE
time_mday(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return INT2FIX(tobj->tm.tm_mday);
}
static VALUE
time_mon(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return INT2FIX(tobj->tm.tm_mon+1);
}
static VALUE
time_year(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return INT2FIX(tobj->tm.tm_year+1900);
}
static VALUE
time_wday(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return INT2FIX(tobj->tm.tm_wday);
}
static VALUE
time_yday(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return INT2FIX(tobj->tm.tm_yday+1);
}
static VALUE
time_isdst(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return tobj->tm.tm_isdst?Qtrue:Qfalse;
}
static VALUE
time_zone(time)
VALUE time;
{
struct time_object *tobj;
char buf[64];
int len;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
if (tobj->gmt == 1) {
return rb_str_new2("UTC");
}
#if defined(HAVE_TM_ZONE)
return rb_str_new2(tobj->tm.tm_zone);
#elif defined(HAVE_TZNAME) && defined(HAVE_DAYLIGHT)
return rb_str_new2(tzname[daylight && tobj->tm.tm_isdst]);
#else
len = strftime(buf, 64, "%Z", &tobj->tm);
return rb_str_new(buf, len);
#endif
}
static VALUE
time_to_a(time)
VALUE time;
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
return rb_ary_new3(10,
INT2FIX(tobj->tm.tm_sec),
INT2FIX(tobj->tm.tm_min),
INT2FIX(tobj->tm.tm_hour),
INT2FIX(tobj->tm.tm_mday),
INT2FIX(tobj->tm.tm_mon+1),
INT2FIX(tobj->tm.tm_year+1900),
INT2FIX(tobj->tm.tm_wday),
INT2FIX(tobj->tm.tm_yday+1),
tobj->tm.tm_isdst?Qtrue:Qfalse,
time_zone(time));
}
#define SMALLBUF 100
static int
rb_strftime(buf, format, time)
char ** volatile buf;
char * volatile format;
struct tm * volatile time;
{
volatile int size;
int len, flen;
(*buf)[0] = '\0';
flen = strlen(format);
if (flen == 0) {
return 0;
}
len = strftime(*buf, SMALLBUF, format, time);
if (len != 0 || **buf == '\0') return len;
for (size=1024; ; size*=2) {
*buf = xmalloc(size);
(*buf)[0] = '\0';
len = strftime(*buf, size, format, time);
/*
* buflen can be zero EITHER because there's not enough
* room in the string, or because the control command
* goes to the empty string. Make a reasonable guess that
* if the buffer is 1024 times bigger than the length of the
* format string, it's not failing for lack of room.
*/
if (len > 0 || len >= 1024 * flen) return len;
free(*buf);
}
/* not reached */
}
static VALUE
time_strftime(time, format)
VALUE time, format;
{
struct time_object *tobj;
char buffer[SMALLBUF];
char *fmt;
char *buf = buffer;
int len;
VALUE str;
GetTimeval(time, tobj);
if (tobj->tm_got == 0) {
time_get_tm(time, tobj->gmt);
}
StringValue(format);
fmt = RSTRING(format)->ptr;
len = RSTRING(format)->len;
if (len == 0) {
rb_warning("strftime called with empty format string");
}
if (strlen(fmt) < len) {
/* Ruby string may contain \0's. */
char *p = fmt, *pe = fmt + len;
str = rb_str_new(0, 0);
while (p < pe) {
len = rb_strftime(&buf, p, &tobj->tm);
rb_str_cat(str, buf, len);
p += strlen(p) + 1;
if (p <= pe)
rb_str_cat(str, "\0", 1);
if (len > SMALLBUF) free(buf);
}
return str;
}
len = rb_strftime(&buf, RSTRING(format)->ptr, &tobj->tm);
str = rb_str_new(buf, len);
if (buf != buffer) free(buf);
return str;
}
static VALUE
time_s_times(obj)
VALUE obj;
{
rb_warn("obsolete method Time::times; use Process::times");
return rb_proc_times(obj);
}
static VALUE
time_dump(argc, argv, time)
int argc;
VALUE *argv;
VALUE time;
{
VALUE dummy;
struct time_object *tobj;
struct tm *tm;
unsigned long p, s;
unsigned char buf[8];
time_t t;
int i;
rb_scan_args(argc, argv, "01", &dummy);
GetTimeval(time, tobj);
t = tobj->tv.tv_sec;
tm = gmtime(&t);
p = 0x1 << 31 | /* 1 */
tm->tm_year << 14 | /* 17 */
tm->tm_mon << 10 | /* 4 */
tm->tm_mday << 5 | /* 5 */
tm->tm_hour; /* 5 */
s = tm->tm_min << 26 | /* 6 */
tm->tm_sec << 20 | /* 6 */
tobj->tv.tv_usec; /* 20 */
for (i=0; i<4; i++) {
buf[i] = p & 0xff;
p = RSHIFT(p, 8);
}
for (i=4; i<8; i++) {
buf[i] = s & 0xff;
s = RSHIFT(s, 8);
}
return rb_str_new(buf, 8);
}
static VALUE
time_load(klass, str)
VALUE klass, str;
{
unsigned long p, s;
time_t sec, usec;
unsigned char *buf;
struct tm tm;
int i;
StringValue(str);
buf = RSTRING(str)->ptr;
if (RSTRING(str)->len != 8) {
rb_raise(rb_eTypeError, "marshaled time format differ");
}
p = s = 0;
for (i=0; i<4; i++) {
p |= buf[i]<<(8*i);
}
for (i=4; i<8; i++) {
s |= buf[i]<<(8*(i-4));
}
if ((p & (1<<31)) == 0) {
return time_new_internal(klass, p, s);
}
p &= ~(1<<31);
tm.tm_year = (p >> 14) & 0x1ffff;
tm.tm_mon = (p >> 10) & 0xf;
tm.tm_mday = (p >> 5) & 0x1f;
tm.tm_hour = p & 0x1f;
tm.tm_min = (s >> 26) & 0x3f;
tm.tm_sec = (s >> 20) & 0x3f;
sec = make_time_t(&tm, gmtime);
usec = (time_t) s & 0xfffff;
return time_new_internal(klass, sec, usec);
}
void
Init_Time()
{
rb_cTime = rb_define_class("Time", rb_cObject);
rb_include_module(rb_cTime, rb_mComparable);
rb_define_singleton_method(rb_cTime, "now", time_s_now, 0);
rb_define_singleton_method(rb_cTime, "new", time_s_new, -1);
rb_define_singleton_method(rb_cTime, "at", time_s_at, -1);
rb_define_singleton_method(rb_cTime, "utc", time_s_mkutc, -1);
rb_define_singleton_method(rb_cTime, "gm", time_s_mkutc, -1);
rb_define_singleton_method(rb_cTime, "local", time_s_mktime, -1);
rb_define_singleton_method(rb_cTime, "mktime", time_s_mktime, -1);
rb_define_singleton_method(rb_cTime, "times", time_s_times, 0);
rb_define_method(rb_cTime, "to_i", time_to_i, 0);
rb_define_method(rb_cTime, "to_f", time_to_f, 0);
rb_define_method(rb_cTime, "<=>", time_cmp, 1);
rb_define_method(rb_cTime, "eql?", time_eql, 1);
rb_define_method(rb_cTime, "hash", time_hash, 0);
rb_define_method(rb_cTime, "clone", time_clone, 0);
rb_define_method(rb_cTime, "localtime", time_localtime, 0);
rb_define_method(rb_cTime, "gmtime", time_gmtime, 0);
rb_define_method(rb_cTime, "utc", time_gmtime, 0);
rb_define_method(rb_cTime, "ctime", time_asctime, 0);
rb_define_method(rb_cTime, "asctime", time_asctime, 0);
rb_define_method(rb_cTime, "to_s", time_to_s, 0);
rb_define_method(rb_cTime, "inspect", time_to_s, 0);
rb_define_method(rb_cTime, "to_a", time_to_a, 0);
rb_define_method(rb_cTime, "+", time_plus, 1);
rb_define_method(rb_cTime, "-", time_minus, 1);
rb_define_method(rb_cTime, "sec", time_sec, 0);
rb_define_method(rb_cTime, "min", time_min, 0);
rb_define_method(rb_cTime, "hour", time_hour, 0);
rb_define_method(rb_cTime, "mday", time_mday, 0);
rb_define_method(rb_cTime, "day", time_mday, 0);
rb_define_method(rb_cTime, "mon", time_mon, 0);
rb_define_method(rb_cTime, "month", time_mon, 0);
rb_define_method(rb_cTime, "year", time_year, 0);
rb_define_method(rb_cTime, "wday", time_wday, 0);
rb_define_method(rb_cTime, "yday", time_yday, 0);
rb_define_method(rb_cTime, "isdst", time_isdst, 0);
rb_define_method(rb_cTime, "dst?", time_isdst, 0);
rb_define_method(rb_cTime, "zone", time_zone, 0);
rb_define_method(rb_cTime, "utc?", time_utc_p, 0);
rb_define_method(rb_cTime, "gmt?", time_utc_p, 0);
rb_define_method(rb_cTime, "tv_sec", time_to_i, 0);
rb_define_method(rb_cTime, "tv_usec", time_usec, 0);
rb_define_method(rb_cTime, "usec", time_usec, 0);
rb_define_method(rb_cTime, "strftime", time_strftime, 1);
/* methods for marshaling */
rb_define_method(rb_cTime, "_dump", time_dump, -1);
rb_define_singleton_method(rb_cTime, "_load", time_load, 1);
}
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