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ruby--ruby/time.c
akr dcf2aad3a5 * time.c (add): shortcut implemented for fixnums. 
(sub): ditto.
  (mul): ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24710 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2009-08-30 04:01:42 +00:00

3887 lines
98 KiB
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/**********************************************************************
time.c -
$Author$
created at: Tue Dec 28 14:31:59 JST 1993
Copyright (C) 1993-2007 Yukihiro Matsumoto
**********************************************************************/
#include "ruby/ruby.h"
#include <sys/types.h>
#include <time.h>
#include <errno.h>
#include "ruby/encoding.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <float.h>
#include <math.h>
#include "timev.h"
#ifndef TYPEOF_TIMEVAL_TV_SEC
# define TYPEOF_TIMEVAL_TV_SEC time_t
#endif
#ifndef TYPEOF_TIMEVAL_TV_USEC
# if INT_MAX >= 1000000
# define TYPEOF_TIMEVAL_TV_USEC int
# else
# define TYPEOF_TIMEVAL_TV_USEC long
# endif
#endif
#if SIZEOF_TIME_T == SIZEOF_LONG
typedef unsigned long unsigned_time_t;
#elif SIZEOF_TIME_T == SIZEOF_INT
typedef unsigned int unsigned_time_t;
#elif SIZEOF_TIME_T == SIZEOF_LONG_LONG
typedef unsigned LONG_LONG unsigned_time_t;
#else
# error cannot find integer type which size is same as time_t.
#endif
#define TIMET_MAX (~(time_t)0 <= 0 ? (time_t)((~(unsigned_time_t)0) >> 1) : (~(unsigned_time_t)0))
#define TIMET_MIN (~(time_t)0 <= 0 ? (time_t)(((unsigned_time_t)1) << (sizeof(time_t) * CHAR_BIT - 1)) : (time_t)0)
VALUE rb_cTime;
static VALUE time_utc_offset _((VALUE));
static long obj2long(VALUE obj);
static VALUE obj2vint(VALUE obj);
static int month_arg(VALUE arg);
static void validate_utc_offset(VALUE utc_offset);
static void validate_vtm(struct vtm *vtm);
static VALUE time_gmtime(VALUE);
static VALUE time_localtime(VALUE);
static VALUE time_fixoff(VALUE);
static time_t timegm_noleapsecond(struct tm *tm);
static int tmcmp(struct tm *a, struct tm *b);
static int vtmcmp(struct vtm *a, struct vtm *b);
static const char *find_time_t(struct tm *tptr, int utc_p, time_t *tp);
static struct vtm *localtimexv(VALUE timexv, struct vtm *result);
static int leap_year_p(long y);
#define leap_year_v_p(y) leap_year_p(NUM2LONG(mod(v, INT2FIX(400))))
#define NDIV(x,y) (-(-((x)+1)/(y))-1)
#define NMOD(x,y) ((y)-(-((x)+1)%(y))-1)
#define DIV(n,d) ((n)<0 ? NDIV((n),(d)) : (n)/(d))
#ifdef HAVE_GMTIME_R
#define IF_HAVE_GMTIME_R(x) x
#define ASCTIME(tm, buf) asctime_r((tm), (buf))
#define GMTIME(tm, result) gmtime_r((tm), &(result))
#define LOCALTIME(tm, result) (tzset(),localtime_r((tm), &(result)))
#else
#define IF_HAVE_GMTIME_R(x) /* nothing */
#define ASCTIME(tm, buf) asctime(tm)
#define GMTIME(tm, result) rb_gmtime((tm), &(result))
#define LOCALTIME(tm, result) rb_localtime((tm), &(result))
static inline struct tm *
rb_gmtime(const time_t *tm, struct tm *result)
{
struct tm *t = gmtime(tm);
if (t) *result = *t;
return t;
}
static inline struct tm *
rb_localtime(const time_t *tm, struct tm *result)
{
struct tm *t = localtime(tm);
if (t) *result = *t;
return t;
}
#endif
static ID id_divmod, id_mul, id_submicro, id_subnano;
static ID id_eq, id_ne, id_quo, id_div, id_cmp, id_lshift;
#define eq(x,y) (RTEST(rb_funcall((x), id_eq, 1, (y))))
#define ne(x,y) (RTEST(rb_funcall((x), id_ne, 1, (y))))
#define lt(x,y) (RTEST(rb_funcall((x), '<', 1, (y))))
#define gt(x,y) (RTEST(rb_funcall((x), '>', 1, (y))))
#define le(x,y) (!gt(x,y))
#define ge(x,y) (!lt(x,y))
static VALUE
add(VALUE x, VALUE y)
{
if (FIXNUM_P(x) && FIXNUM_P(y)) {
long l = FIX2LONG(x) + FIX2LONG(y);
if (FIXABLE(l)) return LONG2FIX(l);
return LONG2NUM(l);
}
if (TYPE(x) == T_BIGNUM) return rb_big_plus(x, y);
return rb_funcall(x, '+', 1, y);
}
static VALUE
sub(VALUE x, VALUE y)
{
if (FIXNUM_P(x) && FIXNUM_P(y)) {
long l = FIX2LONG(x) - FIX2LONG(y);
if (FIXABLE(l)) return LONG2FIX(l);
return LONG2NUM(l);
}
if (TYPE(x) == T_BIGNUM) return rb_big_minus(x, y);
return rb_funcall(x, '-', 1, y);
}
static VALUE
mul(VALUE x, VALUE y)
{
if (FIXNUM_P(x) && FIXNUM_P(y)) {
#if HAVE_LONG_LONG && SIZEOF_LONG * 2 <= SIZEOF_LONG_LONG
LONG_LONG ll = (LONG_LONG)FIX2LONG(x) * FIX2LONG(y);
if (FIXABLE(ll)) return LONG2FIX(ll);
return LL2NUM(ll);
#else
long a, b, c;
a = FIX2LONG(x);
if (a == 0) return x;
b = FIX2LONG(y);
c = a * b;
if (c / a == b && FIXABLE(c)) return LONG2FIX(c);
#endif
}
if (TYPE(x) == T_BIGNUM) return rb_big_mul(x, y);
return rb_funcall(x, '*', 1, y);
}
#define div(x,y) (rb_funcall((x), id_div, 1, (y)))
static VALUE
mod(VALUE x, VALUE y)
{
switch (TYPE(x)) {
case T_BIGNUM: return rb_big_modulo(x, y);
default: return rb_funcall(x, '%', 1, y);
}
}
#define neg(x) (sub(INT2FIX(0), (x)))
#define cmp(x,y) (rb_funcall((x), id_cmp, 1, (y)))
#define lshift(x,y) (rb_funcall((x), id_lshift, 1, (y)))
static VALUE
quo(VALUE x, VALUE y)
{
VALUE ret;
ret = rb_funcall((x), id_quo, 1, (y));
if (TYPE(ret) == T_RATIONAL &&
((struct RRational *)ret)->den == INT2FIX(1)) {
ret = ((struct RRational *)ret)->num;
}
return ret;
}
#define mulquo(x,y,z) ((y == z) ? x : quo(mul(x,y),z))
static void
divmodv(VALUE n, VALUE d, VALUE *q, VALUE *r)
{
VALUE tmp, ary;
tmp = rb_funcall(n, id_divmod, 1, d);
ary = rb_check_array_type(tmp);
if (NIL_P(ary)) {
rb_raise(rb_eTypeError, "unexpected divmod result: into %s",
rb_obj_classname(tmp));
}
*q = rb_ary_entry(ary, 0);
*r = rb_ary_entry(ary, 1);
}
static VALUE
num_exact(VALUE v)
{
switch (TYPE(v)) {
case T_FIXNUM:
case T_BIGNUM:
case T_RATIONAL:
break;
case T_FLOAT:
v = rb_convert_type(v, T_RATIONAL, "Rational", "to_r");
break;
case T_NIL:
goto typeerror;
default: {
VALUE tmp;
if (!NIL_P(tmp = rb_check_convert_type(v, T_RATIONAL, "Rational", "to_r")))
v = tmp;
else if (!NIL_P(tmp = rb_check_to_integer(v, "to_int")))
v = tmp;
else {
typeerror:
rb_raise(rb_eTypeError, "can't convert %s into an exact number",
rb_obj_classname(v));
}
break;
}
}
return v;
}
static VALUE
rb_time_magnify(VALUE v)
{
return mul(v, INT2FIX(TIME_SCALE));
}
static VALUE
rb_time_unmagnify(VALUE v)
{
return quo(v, INT2FIX(TIME_SCALE));
}
static const int common_year_yday_offset[] = {
-1,
-1 + 31,
-1 + 31 + 28,
-1 + 31 + 28 + 31,
-1 + 31 + 28 + 31 + 30,
-1 + 31 + 28 + 31 + 30 + 31,
-1 + 31 + 28 + 31 + 30 + 31 + 30,
-1 + 31 + 28 + 31 + 30 + 31 + 30 + 31,
-1 + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
-1 + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
-1 + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
-1 + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30
/* 1 2 3 4 5 6 7 8 9 10 11 */
};
static const int leap_year_yday_offset[] = {
-1,
-1 + 31,
-1 + 31 + 29,
-1 + 31 + 29 + 31,
-1 + 31 + 29 + 31 + 30,
-1 + 31 + 29 + 31 + 30 + 31,
-1 + 31 + 29 + 31 + 30 + 31 + 30,
-1 + 31 + 29 + 31 + 30 + 31 + 30 + 31,
-1 + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
-1 + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
-1 + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
-1 + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30
/* 1 2 3 4 5 6 7 8 9 10 11 */
};
static const int common_year_days_in_month[] = {
31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
static const int leap_year_days_in_month[] = {
31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
static VALUE
timegmxv_noleapsecond(struct vtm *vtm)
{
VALUE year1900;
VALUE q400, r400;
int year_mod400;
int yday = vtm->mday;
long days_in400;
VALUE ret;
year1900 = sub(vtm->year, INT2FIX(1900));
divmodv(year1900, INT2FIX(400), &q400, &r400);
year_mod400 = NUM2INT(r400);
if (leap_year_p(year_mod400 + 1900))
yday += leap_year_yday_offset[vtm->mon-1];
else
yday += common_year_yday_offset[vtm->mon-1];
/*
* `Seconds Since the Epoch' in SUSv3:
* tm_sec + tm_min*60 + tm_hour*3600 + tm_yday*86400 +
* (tm_year-70)*31536000 + ((tm_year-69)/4)*86400 -
* ((tm_year-1)/100)*86400 + ((tm_year+299)/400)*86400
*/
ret = LONG2NUM(vtm->sec
+ vtm->min*60
+ vtm->hour*3600);
days_in400 = yday
- 70*365
+ DIV(year_mod400 - 69, 4)
- DIV(year_mod400 - 1, 100)
+ (year_mod400 + 299) / 400;
ret = add(ret, mul(LONG2NUM(days_in400), INT2FIX(86400)));
ret = add(ret, mul(q400, INT2FIX(97*86400)));
ret = add(ret, mul(year1900, INT2FIX(365*86400)));
ret = add(rb_time_magnify(ret), vtm->subsecx);
return ret;
}
static st_table *zone_table;
static const char *
zone_str(const char *s)
{
st_data_t k, v;
if (!zone_table)
zone_table = st_init_strtable();
k = (st_data_t)s;
if (st_lookup(zone_table, k, &v)) {
return (const char *)v;
}
s = strdup(s);
k = (st_data_t)s;
st_add_direct(zone_table, k, k);
return s;
}
static void
gmtimexv_noleapsecond(VALUE timexv, struct vtm *vtm)
{
VALUE v;
int i, n, x, y;
const int *yday_offset;
int wday;
VALUE timev;
vtm->isdst = 0;
divmodv(timexv, INT2FIX(TIME_SCALE), &timev, &vtm->subsecx);
divmodv(timev, INT2FIX(86400), &timev, &v);
wday = NUM2INT(mod(timev, INT2FIX(7)));
vtm->wday = (wday + 4) % 7;
n = NUM2INT(v);
vtm->sec = n % 60; n = n / 60;
vtm->min = n % 60; n = n / 60;
vtm->hour = n;
/* 97 leap days in the 400 year cycle */
divmodv(timev, INT2FIX(400*365 + 97), &timev, &v);
vtm->year = mul(timev, INT2FIX(400));
/* n is the days in the 400 year cycle.
* the start of the cycle is 1970-01-01. */
n = NUM2INT(v);
y = 1970;
/* 30 years including 7 leap days (1972, 1976, ... 1996),
* 31 days in January 2000 and
* 29 days in Febrary 2000
* from 1970-01-01 to 2000-02-29 */
if (30*365+7+31+29-1 <= n) {
/* 2000-02-29 or after */
if (n < 31*365+8) {
/* 2000-02-29 to 2000-12-31 */
y += 30;
n -= 30*365+7;
goto found;
}
else {
/* 2001-01-01 or after */
n -= 1;
}
}
x = n / (365*100 + 24);
n = n % (365*100 + 24);
y += x * 100;
if (30*365+7+31+29-1 <= n) {
if (n < 31*365+7) {
y += 30;
n -= 30*365+7;
goto found;
}
else
n += 1;
}
x = n / (365*4 + 1);
n = n % (365*4 + 1);
y += x * 4;
if (365*2+31+29-1 <= n) {
if (n < 365*2+366) {
y += 2;
n -= 365*2;
goto found;
}
else
n -= 1;
}
x = n / 365;
n = n % 365;
y += x;
found:
vtm->yday = n+1;
vtm->year = add(vtm->year, INT2NUM(y));
if (leap_year_p(y))
yday_offset = leap_year_yday_offset;
else
yday_offset = common_year_yday_offset;
for (i = 0; i < 12; i++) {
if (yday_offset[i] < n) {
vtm->mon = i+1;
vtm->mday = n - yday_offset[i];
}
else
break;
}
vtm->utc_offset = INT2FIX(0);
vtm->zone = "UTC";
}
static struct tm *
gmtime_with_leapsecond(const time_t *timep, struct tm *result)
{
#if defined(HAVE_STRUCT_TM_TM_GMTOFF)
/* 4.4BSD counts leap seconds only with localtime, not with gmtime. */
struct tm *t;
int sign;
long gmtoff, gmtoff_sec, gmtoff_min, gmtoff_hour, gmtoff_day;
t = localtime_r(timep, result);
if (t == NULL)
return NULL;
/* subtract gmtoff */
if (t->tm_gmtoff < 0) {
sign = 1;
gmtoff = -t->tm_gmtoff;
}
else {
sign = -1;
gmtoff = t->tm_gmtoff;
}
gmtoff_sec = gmtoff % 60;
gmtoff = gmtoff / 60;
gmtoff_min = gmtoff % 60;
gmtoff = gmtoff / 60;
gmtoff_hour = gmtoff;
gmtoff_sec *= sign;
gmtoff_min *= sign;
gmtoff_hour *= sign;
gmtoff_day = 0;
if (gmtoff_sec) {
/* If gmtoff_sec == 0, don't change result->tm_sec.
* It may be 60 which is a leap second. */
result->tm_sec += gmtoff_sec;
if (result->tm_sec < 0) {
result->tm_sec += 60;
gmtoff_min -= 1;
}
if (60 <= result->tm_sec) {
result->tm_sec -= 60;
gmtoff_min += 1;
}
}
if (gmtoff_min) {
result->tm_min += gmtoff_min;
if (result->tm_min < 0) {
result->tm_min += 60;
gmtoff_hour -= 1;
}
if (60 <= result->tm_min) {
result->tm_min -= 60;
gmtoff_hour += 1;
}
}
if (gmtoff_hour) {
result->tm_hour += gmtoff_hour;
if (result->tm_hour < 0) {
result->tm_hour += 24;
gmtoff_day = -1;
}
if (24 <= result->tm_hour) {
result->tm_hour -= 24;
gmtoff_day = 1;
}
}
if (gmtoff_day) {
if (gmtoff_day < 0) {
if (result->tm_yday == 0) {
result->tm_mday = 31;
result->tm_mon = 11; /* December */
result->tm_year--;
result->tm_yday = leap_year_p(result->tm_year + 1900) ? 365 : 364;
}
else if (result->tm_mday == 1) {
const int *days_in_month = leap_year_p(result->tm_year + 1900) ?
leap_year_days_in_month :
common_year_days_in_month;
result->tm_mon--;
result->tm_mday = days_in_month[result->tm_mon];
result->tm_yday--;
}
else {
result->tm_mday--;
result->tm_yday--;
}
result->tm_wday = (result->tm_wday + 6) % 7;
}
else {
int leap = leap_year_p(result->tm_year + 1900);
if (result->tm_yday == (leap ? 365 : 364)) {
result->tm_year++;
result->tm_mon = 0; /* January */
result->tm_mday = 1;
result->tm_yday = 0;
}
else if (result->tm_mday == (leap ? leap_year_days_in_month :
common_year_days_in_month)[result->tm_mon]) {
result->tm_mon++;
result->tm_mday = 1;
result->tm_yday++;
}
else {
result->tm_mday++;
result->tm_yday++;
}
result->tm_wday = (result->tm_wday + 1) % 7;
}
}
result->tm_isdst = 0;
result->tm_gmtoff = 0;
#if defined(HAVE_TM_ZONE)
result->tm_zone = (char *)"UTC";
#endif
return result;
#else
return GMTIME(timep, *result);
#endif
}
static long this_year = 0;
static time_t known_leap_seconds_limit;
static int number_of_leap_seconds_known;
static void
init_leap_second_info()
{
/*
* leap seconds are determined by IERS.
* It is announced 6 months before the leap second.
* So no one knows leap seconds in the future after the next year.
*/
if (this_year == 0) {
time_t now;
struct tm *tm, result;
struct vtm vtm;
VALUE timexv;
now = time(NULL);
gmtime(&now);
tm = gmtime_with_leapsecond(&now, &result);
if (!tm) return;
this_year = tm->tm_year;
if (TIMET_MAX - now < (time_t)(366*86400))
known_leap_seconds_limit = TIMET_MAX;
else
known_leap_seconds_limit = now + (time_t)(366*86400);
gmtime_with_leapsecond(&known_leap_seconds_limit, &result);
vtm.year = LONG2NUM(result.tm_year + 1900);
vtm.mon = result.tm_mon + 1;
vtm.mday = result.tm_mday;
vtm.hour = result.tm_hour;
vtm.min = result.tm_min;
vtm.sec = result.tm_sec;
vtm.subsecx = INT2FIX(0);
vtm.utc_offset = INT2FIX(0);
timexv = timegmxv_noleapsecond(&vtm);
number_of_leap_seconds_known = NUM2INT(sub(TIMET2NUM(known_leap_seconds_limit), rb_time_unmagnify(timexv)));
}
}
static VALUE
timegmxv(struct vtm *vtm)
{
VALUE timexv;
struct tm tm;
time_t t;
const char *errmsg;
/* The first leap second is 1972-06-30 23:59:60 UTC.
* No leap seconds before. */
if (RTEST(gt(INT2FIX(1972), vtm->year)))
return timegmxv_noleapsecond(vtm);
init_leap_second_info();
timexv = timegmxv_noleapsecond(vtm);
if (RTEST(lt(rb_time_magnify(TIMET2NUM(known_leap_seconds_limit)), timexv))) {
return add(timexv, rb_time_magnify(INT2NUM(number_of_leap_seconds_known)));
}
tm.tm_year = NUM2LONG(vtm->year) - 1900;
tm.tm_mon = vtm->mon - 1;
tm.tm_mday = vtm->mday;
tm.tm_hour = vtm->hour;
tm.tm_min = vtm->min;
tm.tm_sec = vtm->sec;
tm.tm_isdst = 0;
errmsg = find_time_t(&tm, 1, &t);
if (errmsg)
rb_raise(rb_eArgError, "%s", errmsg);
return add(rb_time_magnify(TIMET2NUM(t)), vtm->subsecx);
}
static struct vtm *
gmtimexv(VALUE timexv, struct vtm *result)
{
time_t t;
struct tm tm;
VALUE subsecx;
VALUE timev;
if (RTEST(lt(timexv, INT2FIX(0)))) {
gmtimexv_noleapsecond(timexv, result);
return result;
}
init_leap_second_info();
if (RTEST(lt(rb_time_magnify(LONG2NUM(known_leap_seconds_limit)), timexv))) {
timexv = sub(timexv, rb_time_magnify(INT2NUM(number_of_leap_seconds_known)));
gmtimexv_noleapsecond(timexv, result);
return result;
}
divmodv(timexv, INT2FIX(TIME_SCALE), &timev, &subsecx);
t = NUM2TIMET(timev);
if (!gmtime_with_leapsecond(&t, &tm))
return NULL;
result->year = LONG2NUM((long)tm.tm_year + 1900);
result->mon = tm.tm_mon + 1;
result->mday = tm.tm_mday;
result->hour = tm.tm_hour;
result->min = tm.tm_min;
result->sec = tm.tm_sec;
result->subsecx = subsecx;
result->utc_offset = INT2FIX(0);
result->wday = tm.tm_wday;
result->yday = tm.tm_yday+1;
result->isdst = tm.tm_isdst;
result->zone = "UTC";
return result;
}
static struct tm *localtime_with_gmtoff(const time_t *t, struct tm *result, long *gmtoff);
/*
* The idea is come from Perl:
* http://use.perl.org/articles/08/02/07/197204.shtml
*
* compat_common_month_table is generated by following program.
* This table finds the last month which start the same day of a week.
* The year 2037 is not used because
* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=522949
*
* #!/usr/bin/ruby
*
* require 'date'
*
* h = {}
* 2036.downto(2010) {|y|
* 1.upto(12) {|m|
* next if m == 2 && y % 4 == 0
* d = Date.new(y,m,1)
* h[m] ||= {}
* h[m][d.wday] ||= y
* }
* }
*
* 1.upto(12) {|m|
* print "{"
* 0.upto(6) {|w|
* y = h[m][w]
* print " #{y},"
* }
* puts "},"
* }
*
*/
static int compat_common_month_table[12][7] = {
/* Sun Mon Tue Wed Thu Fri Sat */
{ 2034, 2035, 2036, 2031, 2032, 2027, 2033 }, /* January */
{ 2026, 2027, 2033, 2034, 2035, 2030, 2031 }, /* February */
{ 2026, 2032, 2033, 2034, 2035, 2030, 2036 }, /* March */
{ 2035, 2030, 2036, 2026, 2032, 2033, 2034 }, /* April */
{ 2033, 2034, 2035, 2030, 2036, 2026, 2032 }, /* May */
{ 2036, 2026, 2032, 2033, 2034, 2035, 2030 }, /* June */
{ 2035, 2030, 2036, 2026, 2032, 2033, 2034 }, /* July */
{ 2032, 2033, 2034, 2035, 2030, 2036, 2026 }, /* August */
{ 2030, 2036, 2026, 2032, 2033, 2034, 2035 }, /* September */
{ 2034, 2035, 2030, 2036, 2026, 2032, 2033 }, /* October */
{ 2026, 2032, 2033, 2034, 2035, 2030, 2036 }, /* November */
{ 2030, 2036, 2026, 2032, 2033, 2034, 2035 }, /* December */
};
/*
* compat_leap_month_table is generated by following program.
*
* #!/usr/bin/ruby
*
* require 'date'
*
* h = {}
* 2037.downto(2010) {|y|
* 1.upto(12) {|m|
* next unless m == 2 && y % 4 == 0
* d = Date.new(y,m,1)
* h[m] ||= {}
* h[m][d.wday] ||= y
* }
* }
*
* 2.upto(2) {|m|
* 0.upto(6) {|w|
* y = h[m][w]
* print " #{y},"
* }
* puts
* }
*/
static int compat_leap_month_table[7] = {
/* Sun Mon Tue Wed Thu Fri Sat */
2032, 2016, 2028, 2012, 2024, 2036, 2020, /* February */
};
static int
calc_wday(int year, int month, int day)
{
int a, y, m;
int wday;
a = (14 - month) / 12;
y = year + 4800 - a;
m = month + 12 * a - 3;
wday = day + (153*m+2)/5 + 365*y + y/4 - y/100 + y/400 + 2;
wday = wday % 7;
return wday;
}
static VALUE
guess_local_offset(struct vtm *vtm_utc)
{
VALUE off = INT2FIX(0);
struct tm tm;
long gmtoff;
time_t t;
struct vtm vtm2;
VALUE timev;
int y, wday;
# if defined(NEGATIVE_TIME_T)
/* 1901-12-13 20:45:52 UTC : The oldest time in 32-bit signed time_t. */
if (localtime_with_gmtoff((t = (time_t)0x80000000, &t), &tm, &gmtoff))
off = LONG2FIX(gmtoff);
else
# endif
/* 1970-01-01 00:00:00 UTC : The Unix epoch - the oldest time in portable time_t. */
if (localtime_with_gmtoff((t = 0, &t), &tm, &gmtoff))
off = LONG2FIX(gmtoff);
/* The first DST is at 1916 in German.
* So we don't need to care DST before that. */
if (lt(vtm_utc->year, INT2FIX(1916)))
return off;
/* It is difficult to guess future. */
vtm2 = *vtm_utc;
/* guess using a year before 2038. */
y = NUM2INT(mod(vtm_utc->year, INT2FIX(400)));
wday = calc_wday(y, vtm_utc->mon, 1);
if (vtm_utc->mon == 2 && leap_year_p(y))
vtm2.year = INT2FIX(compat_leap_month_table[wday]);
else
vtm2.year = INT2FIX(compat_common_month_table[vtm_utc->mon-1][wday]);
timev = rb_time_unmagnify(timegmxv(&vtm2));
t = NUM2TIMET(timev);
if (localtime_with_gmtoff(&t, &tm, &gmtoff))
return LONG2FIX(gmtoff);
{
/* Use the current time offset as a last resort. */
static time_t now = 0;
static long now_gmtoff = 0;
if (now == 0) {
now = time(NULL);
localtime_with_gmtoff(&now, &tm, &now_gmtoff);
}
return LONG2FIX(now_gmtoff);
}
}
static VALUE
small_vtm_sub(struct vtm *vtm1, struct vtm *vtm2)
{
int off;
off = vtm1->sec - vtm2->sec;
off += (vtm1->min - vtm2->min) * 60;
off += (vtm1->hour - vtm2->hour) * 3600;
if (ne(vtm1->year, vtm2->year))
off += lt(vtm1->year, vtm2->year) ? -24*3600 : 24*3600;
else if (vtm1->mon != vtm2->mon)
off += vtm1->mon < vtm2->mon ? -24*3600 : 24*3600;
else if (vtm1->mday != vtm2->mday)
off += vtm1->mday < vtm2->mday ? -24*3600 : 24*3600;
return INT2FIX(off);
}
static VALUE
timelocalxv(struct vtm *vtm)
{
time_t t;
struct tm tm;
VALUE v;
VALUE timexv1, timexv2;
struct vtm vtm1, vtm2;
int n;
if (FIXNUM_P(vtm->year)) {
long l = FIX2LONG(vtm->year) - 1900;
if (l < INT_MIN || INT_MAX < l)
goto no_localtime;
tm.tm_year = l;
}
else {
v = sub(vtm->year, INT2FIX(1900));
if (lt(v, INT2NUM(INT_MIN)) || lt(INT2NUM(INT_MAX), v))
goto no_localtime;
tm.tm_year = NUM2INT(v);
}
tm.tm_mon = vtm->mon-1;
tm.tm_mday = vtm->mday;
tm.tm_hour = vtm->hour;
tm.tm_min = vtm->min;
tm.tm_sec = vtm->sec;
tm.tm_isdst = vtm->isdst;
if (find_time_t(&tm, 0, &t))
goto no_localtime;
return add(rb_time_magnify(TIMET2NUM(t)), vtm->subsecx);
no_localtime:
timexv1 = timegmxv(vtm);
if (!localtimexv(timexv1, &vtm1))
rb_raise(rb_eArgError, "localtimexv error");
n = vtmcmp(vtm, &vtm1);
if (n == 0) {
timexv1 = sub(timexv1, rb_time_magnify(INT2FIX(12*3600)));
if (!localtimexv(timexv1, &vtm1))
rb_raise(rb_eArgError, "localtimexv error");
n = 1;
}
if (n < 0) {
timexv2 = timexv1;
vtm2 = vtm1;
timexv1 = sub(timexv1, rb_time_magnify(INT2FIX(24*3600)));
if (!localtimexv(timexv1, &vtm1))
rb_raise(rb_eArgError, "localtimexv error");
}
else {
timexv2 = add(timexv1, rb_time_magnify(INT2FIX(24*3600)));
if (!localtimexv(timexv2, &vtm2))
rb_raise(rb_eArgError, "localtimexv error");
}
timexv1 = add(timexv1, rb_time_magnify(small_vtm_sub(vtm, &vtm1)));
timexv2 = add(timexv2, rb_time_magnify(small_vtm_sub(vtm, &vtm2)));
if (eq(timexv1, timexv2))
return timexv1;
if (!localtimexv(timexv1, &vtm1))
rb_raise(rb_eArgError, "localtimexv error");
if (vtm->hour != vtm1.hour || vtm->min != vtm1.min || vtm->sec != vtm1.sec)
return timexv2;
if (!localtimexv(timexv2, &vtm2))
rb_raise(rb_eArgError, "localtimexv error");
if (vtm->hour != vtm2.hour || vtm->min != vtm2.min || vtm->sec != vtm2.sec)
return timexv1;
if (vtm->isdst)
return lt(vtm1.utc_offset, vtm2.utc_offset) ? timexv2 : timexv1;
else
return lt(vtm1.utc_offset, vtm2.utc_offset) ? timexv1 : timexv2;
}
static struct tm *
localtime_with_gmtoff(const time_t *t, struct tm *result, long *gmtoff)
{
struct tm tm;
if (LOCALTIME(t, tm)) {
#if defined(HAVE_STRUCT_TM_TM_GMTOFF)
*gmtoff = tm.tm_gmtoff;
#else
struct tm *u, *l;
long off;
struct tm tmbuf;
l = &tm;
u = GMTIME(t, tmbuf);
if (!u)
return NULL;
if (l->tm_year != u->tm_year)
off = l->tm_year < u->tm_year ? -1 : 1;
else if (l->tm_mon != u->tm_mon)
off = l->tm_mon < u->tm_mon ? -1 : 1;
else if (l->tm_mday != u->tm_mday)
off = l->tm_mday < u->tm_mday ? -1 : 1;
else
off = 0;
off = off * 24 + l->tm_hour - u->tm_hour;
off = off * 60 + l->tm_min - u->tm_min;
off = off * 60 + l->tm_sec - u->tm_sec;
*gmtoff = off;
#endif
*result = tm;
return result;
}
return NULL;
}
static struct vtm *
localtimexv(VALUE timexv, struct vtm *result)
{
VALUE timev, subsecx, offset;
divmodv(timexv, INT2FIX(TIME_SCALE), &timev, &subsecx);
if (le(TIMET2NUM(TIMET_MIN), timev) &&
le(timev, TIMET2NUM(TIMET_MAX))) {
time_t t;
struct tm tm;
long gmtoff;
t = NUM2TIMET(timev);
if (localtime_with_gmtoff(&t, &tm, &gmtoff)) {
result->year = LONG2NUM((long)tm.tm_year + 1900);
result->mon = tm.tm_mon + 1;
result->mday = tm.tm_mday;
result->hour = tm.tm_hour;
result->min = tm.tm_min;
result->sec = tm.tm_sec;
result->subsecx = subsecx;
result->wday = tm.tm_wday;
result->yday = tm.tm_yday+1;
result->isdst = tm.tm_isdst;
result->utc_offset = LONG2NUM(gmtoff);
#if defined(HAVE_TM_ZONE)
result->zone = zone_str(tm.tm_zone);
#elif defined(HAVE_TZNAME) && defined(HAVE_DAYLIGHT)
/* this needs tzset or localtime, instead of localtime_r */
result->zone = zone_str(tzname[daylight && tm.tm_isdst]);
#else
{
char buf[64];
strftime(buf, sizeof(buf), "%Z", &tm);
result->zone = zone_str(buf);
}
#endif
return result;
}
}
if (!gmtimexv(timexv, result))
return NULL;
offset = guess_local_offset(result);
if (!gmtimexv(add(timexv, rb_time_magnify(offset)), result))
return NULL;
result->utc_offset = offset;
return result;
}
struct time_object {
VALUE timexv;
struct vtm vtm;
int gmt;
int tm_got;
};
#define GetTimeval(obj, tobj) \
Data_Get_Struct(obj, struct time_object, tobj)
#define TIME_UTC_P(tobj) ((tobj)->gmt == 1)
#define TIME_SET_UTC(tobj) ((tobj)->gmt = 1)
#define TIME_LOCALTIME_P(tobj) ((tobj)->gmt == 0)
#define TIME_SET_LOCALTIME(tobj) ((tobj)->gmt = 0)
#define TIME_FIXOFF_P(tobj) ((tobj)->gmt == 2)
#define TIME_SET_FIXOFF(tobj, off) \
((tobj)->gmt = 2, \
(tobj)->vtm.utc_offset = (off), \
(tobj)->vtm.zone = NULL)
#define TIME_COPY_GMT(tobj1, tobj2) ((tobj1)->gmt = (tobj2)->gmt)
static VALUE time_get_tm(VALUE, struct time_object *);
#define MAKE_TM(time, tobj) \
do { \
if ((tobj)->tm_got == 0) { \
time_get_tm((time), (tobj)); \
} \
} while (0)
static void
time_mark(void *ptr)
{
struct time_object *tobj = ptr;
if (!tobj) return;
rb_gc_mark(tobj->timexv);
rb_gc_mark(tobj->vtm.year);
rb_gc_mark(tobj->vtm.subsecx);
rb_gc_mark(tobj->vtm.utc_offset);
}
static void
time_free(void *tobj)
{
if (tobj) xfree(tobj);
}
static VALUE
time_s_alloc(VALUE klass)
{
VALUE obj;
struct time_object *tobj;
obj = Data_Make_Struct(klass, struct time_object, time_mark, time_free, tobj);
tobj->tm_got=0;
tobj->timexv = INT2FIX(0);
return obj;
}
static void
time_modify(VALUE time)
{
rb_check_frozen(time);
if (!OBJ_UNTRUSTED(time) && rb_safe_level() >= 4)
rb_raise(rb_eSecurityError, "Insecure: can't modify Time");
}
static VALUE
timespec2timexv(struct timespec *ts)
{
VALUE timexv;
timexv = rb_time_magnify(TIMET2NUM(ts->tv_sec));
if (ts->tv_nsec)
timexv = add(timexv, mulquo(LONG2NUM(ts->tv_nsec), INT2FIX(TIME_SCALE), INT2FIX(1000000000)));
return timexv;
}
static struct timespec
timexv2timespec(VALUE timexv)
{
VALUE timev, subsecx;
struct timespec ts;
divmodv(timexv, INT2FIX(TIME_SCALE), &timev, &subsecx);
if (lt(timev, TIMET2NUM(TIMET_MIN)) || lt(TIMET2NUM(TIMET_MAX), timev))
rb_raise(rb_eArgError, "time out of system range");
ts.tv_sec = NUM2TIMET(timev);
ts.tv_nsec = NUM2LONG(mulquo(subsecx, INT2FIX(1000000000), INT2FIX(TIME_SCALE)));
return ts;
}
/*
* Document-method: now
*
* Synonym for <code>Time.new</code>. Returns a +Time+ object
* initialized to the current system time.
*/
static VALUE
time_init_0(VALUE time)
{
struct time_object *tobj;
struct timespec ts;
time_modify(time);
GetTimeval(time, tobj);
tobj->tm_got=0;
tobj->timexv = INT2FIX(0);
#ifdef HAVE_CLOCK_GETTIME
if (clock_gettime(CLOCK_REALTIME, &ts) == -1) {
rb_sys_fail("clock_gettime");
}
#else
{
struct timeval tv;
if (gettimeofday(&tv, 0) < 0) {
rb_sys_fail("gettimeofday");
}
ts.tv_sec = tv.tv_sec;
ts.tv_nsec = tv.tv_usec * 1000;
}
#endif
tobj->timexv = timespec2timexv(&ts);
return time;
}
static VALUE
time_set_utc_offset(VALUE time, VALUE off)
{
struct time_object *tobj;
off = num_exact(off);
time_modify(time);
GetTimeval(time, tobj);
tobj->tm_got = 0;
TIME_SET_FIXOFF(tobj, off);
return time;
}
static void
vtm_add_offset(struct vtm *vtm, VALUE off)
{
int sign;
VALUE subsec, v;
int sec, min, hour;
int day;
vtm->utc_offset = sub(vtm->utc_offset, off);
if (RTEST(lt(off, INT2FIX(0)))) {
sign = -1;
off = neg(off);
}
else {
sign = 1;
}
divmodv(off, INT2FIX(1), &off, &subsec);
divmodv(off, INT2FIX(60), &off, &v);
sec = NUM2INT(v);
divmodv(off, INT2FIX(60), &off, &v);
min = NUM2INT(v);
divmodv(off, INT2FIX(24), &off, &v);
hour = NUM2INT(v);
if (sign < 0) {
subsec = neg(subsec);
sec = -sec;
min = -min;
hour = -hour;
}
day = 0;
if (!rb_equal(subsec, INT2FIX(0))) {
vtm->subsecx = add(vtm->subsecx, rb_time_magnify(subsec));
if (lt(vtm->subsecx, INT2FIX(0))) {
vtm->subsecx = add(vtm->subsecx, INT2FIX(TIME_SCALE));
sec -= 1;
}
if (le(INT2FIX(TIME_SCALE), vtm->subsecx)) {
vtm->subsecx = sub(vtm->subsecx, INT2FIX(TIME_SCALE));
sec += 1;
}
goto not_zero_sec;
}
if (sec) {
not_zero_sec:
/* If sec + subsec == 0, don't change vtm->sec.
* It may be 60 which is a leap second. */
vtm->sec += sec;
if (vtm->sec < 0) {
vtm->sec += 60;
min -= 1;
}
if (60 <= vtm->sec) {
vtm->sec -= 60;
min += 1;
}
}
if (min) {
vtm->min += min;
if (vtm->min < 0) {
vtm->min += 60;
hour -= 1;
}
if (60 <= vtm->min) {
vtm->min -= 60;
hour += 1;
}
}
if (hour) {
vtm->hour += hour;
if (vtm->hour < 0) {
vtm->hour += 24;
day = -1;
}
if (24 <= vtm->hour) {
vtm->hour -= 24;
day = 1;
}
}
if (day) {
if (day < 0) {
if (vtm->mon == 1 && vtm->mday == 1) {
vtm->mday = 31;
vtm->mon = 12; /* December */
vtm->year = sub(vtm->year, INT2FIX(1));
vtm->yday = leap_year_v_p(vtm->year) ? 365 : 364;
}
else if (vtm->mday == 1) {
const int *days_in_month = leap_year_v_p(vtm->year) ?
leap_year_days_in_month :
common_year_days_in_month;
vtm->mon--;
vtm->mday = days_in_month[vtm->mon-1];
vtm->yday--;
}
else {
vtm->mday--;
vtm->yday--;
}
vtm->wday = (vtm->wday + 6) % 7;
}
else {
int leap = leap_year_v_p(vtm->year);
if (vtm->mon == 12 && vtm->mday == 31) {
vtm->year = add(vtm->year, INT2FIX(1));
vtm->mon = 1; /* January */
vtm->mday = 1;
vtm->yday = 1;
}
else if (vtm->mday == (leap ? leap_year_days_in_month :
common_year_days_in_month)[vtm->mon-1]) {
vtm->mon++;
vtm->mday = 1;
vtm->yday++;
}
else {
vtm->mday++;
vtm->yday++;
}
vtm->wday = (vtm->wday + 1) % 7;
}
}
}
static VALUE
utc_offset_arg(VALUE arg)
{
VALUE tmp;
if (!NIL_P(tmp = rb_check_string_type(arg))) {
int n;
char *s = RSTRING_PTR(tmp);
if (!rb_enc_str_asciicompat_p(tmp) ||
RSTRING_LEN(tmp) != 6 ||
(s[0] != '+' && s[0] != '-') ||
!ISDIGIT(s[1]) ||
!ISDIGIT(s[2]) ||
s[3] != ':' ||
!ISDIGIT(s[4]) ||
!ISDIGIT(s[5]))
rb_raise(rb_eArgError, "\"+HH:MM\" or \"-HH:MM\" expected for utc_offset");
n = strtol(s+1, NULL, 10) * 3600;
n += strtol(s+4, NULL, 10) * 60;
if (s[0] == '-')
n = -n;
return INT2FIX(n);
}
else {
return num_exact(arg);
}
}
static VALUE
time_init_1(int argc, VALUE *argv, VALUE time)
{
struct vtm vtm;
VALUE v[7];
struct time_object *tobj;
vtm.wday = -1;
vtm.yday = 0;
vtm.zone = "";
/* year mon mday hour min sec off */
rb_scan_args(argc, argv, "16", &v[0],&v[1],&v[2],&v[3],&v[4],&v[5],&v[6]);
vtm.year = obj2vint(v[0]);
vtm.mon = NIL_P(v[1]) ? 1 : month_arg(v[1]);
vtm.mday = NIL_P(v[2]) ? 1 : obj2long(v[2]);
vtm.hour = NIL_P(v[3]) ? 0 : obj2long(v[3]);
vtm.min = NIL_P(v[4]) ? 0 : obj2long(v[4]);
vtm.sec = 0;
vtm.subsecx = INT2FIX(0);
if (!NIL_P(v[5])) {
VALUE sec = num_exact(v[5]);
VALUE subsec;
divmodv(sec, INT2FIX(1), &sec, &subsec);
vtm.sec = NUM2INT(sec);
vtm.subsecx = rb_time_magnify(subsec);
}
vtm.isdst = -1;
vtm.utc_offset = Qnil;
if (!NIL_P(v[6])) {
VALUE arg = v[6];
if (arg == ID2SYM(rb_intern("dst")))
vtm.isdst = 1;
else if (arg == ID2SYM(rb_intern("std")))
vtm.isdst = 0;
else
vtm.utc_offset = utc_offset_arg(arg);
}
validate_vtm(&vtm);
time_modify(time);
GetTimeval(time, tobj);
tobj->tm_got=0;
tobj->timexv = INT2FIX(0);
if (!NIL_P(vtm.utc_offset)) {
VALUE off = vtm.utc_offset;
vtm_add_offset(&vtm, neg(off));
vtm.utc_offset = Qnil;
tobj->timexv = timegmxv(&vtm);
return time_set_utc_offset(time, off);
}
else {
tobj->timexv = timelocalxv(&vtm);
return time_localtime(time);
}
}
/*
* call-seq:
* Time.new -> time
* Time.new(year) -> time
* Time.new(year, month) -> time
* Time.new(year, month, day) -> time
* Time.new(year, month, day, hour) -> time
* Time.new(year, month, day, hour, min) -> time
* Time.new(year, month, day, hour, min, sec) -> time
* Time.new(year, month, day, hour, min, sec, utc_offset) -> time
*
* Returns a <code>Time</code> object.
*
* It is initialized to the current system time if no argument.
* <b>Note:</b> The object created will be created using the
* resolution available on your system clock, and so may include
* fractional seconds.
*
* If one or more arguments specified, the time is initialized
* to the specified time.
* _sec_ may have fraction if it is a rational.
*
* _utc_offset_ is the offset from UTC.
* It is a string such as "+09:00" or a number of seconds such as 32400.
*
* a = Time.new #=> 2007-11-19 07:50:02 -0600
* b = Time.new #=> 2007-11-19 07:50:02 -0600
* a == b #=> false
* "%.6f" % a.to_f #=> "1195480202.282373"
* "%.6f" % b.to_f #=> "1195480202.283415"
*
* Time.new(2008,6,21, 13,30,0, "+09:00") #=> 2008-06-21 13:30:00 +0900
*
*/
static VALUE
time_init(int argc, VALUE *argv, VALUE time)
{
if (argc == 0)
return time_init_0(time);
else
return time_init_1(argc, argv, time);
}
static void
time_overflow_p(time_t *secp, long *nsecp)
{
time_t tmp, sec = *secp;
long nsec = *nsecp;
if (nsec >= 1000000000) { /* nsec positive overflow */
tmp = sec + nsec / 1000000000;
nsec %= 1000000000;
if (sec > 0 && tmp < 0) {
rb_raise(rb_eRangeError, "out of Time range");
}
sec = tmp;
}
if (nsec < 0) { /* nsec negative overflow */
tmp = sec + NDIV(nsec,1000000000); /* negative div */
nsec = NMOD(nsec,1000000000); /* negative mod */
if (sec < 0 && tmp > 0) {
rb_raise(rb_eRangeError, "out of Time range");
}
sec = tmp;
}
#ifndef NEGATIVE_TIME_T
if (sec < 0)
rb_raise(rb_eArgError, "time must be positive");
#endif
*secp = sec;
*nsecp = nsec;
}
static VALUE nsec2timexv(time_t sec, long nsec)
{
struct timespec ts;
time_overflow_p(&sec, &nsec);
ts.tv_sec = sec;
ts.tv_nsec = nsec;
return timespec2timexv(&ts);
}
static VALUE
time_new_internal(VALUE klass, VALUE timexv)
{
VALUE time = time_s_alloc(klass);
struct time_object *tobj;
GetTimeval(time, tobj);
tobj->timexv = num_exact(timexv);
return time;
}
VALUE
rb_time_new(time_t sec, long usec)
{
return time_new_internal(rb_cTime, nsec2timexv(sec, usec * 1000));
}
VALUE
rb_time_nano_new(time_t sec, long nsec)
{
return time_new_internal(rb_cTime, nsec2timexv(sec, nsec));
}
VALUE
rb_time_num_new(VALUE timev, VALUE off)
{
VALUE time = time_new_internal(rb_cTime, rb_time_magnify(timev));
if (!NIL_P(off)) {
off = utc_offset_arg(off);
validate_utc_offset(off);
time_set_utc_offset(time, off);
return time;
}
return time;
}
static VALUE
time_new_timexv(VALUE klass, VALUE timexv)
{
VALUE time = time_s_alloc(klass);
struct time_object *tobj;
GetTimeval(time, tobj);
tobj->timexv = timexv;
return time;
}
static struct timespec
time_timespec(VALUE num, int interval)
{
struct timespec t;
const char *tstr = interval ? "time interval" : "time";
VALUE i, f, ary;
#ifndef NEGATIVE_TIME_T
interval = 1;
#endif
switch (TYPE(num)) {
case T_FIXNUM:
t.tv_sec = NUM2TIMET(num);
if (interval && t.tv_sec < 0)
rb_raise(rb_eArgError, "%s must be positive", tstr);
t.tv_nsec = 0;
break;
case T_FLOAT:
if (interval && RFLOAT_VALUE(num) < 0.0)
rb_raise(rb_eArgError, "%s must be positive", tstr);
else {
double f, d;
d = modf(RFLOAT_VALUE(num), &f);
if (d >= 0) {
t.tv_nsec = (int)(d*1e9+0.5);
}
else if ((t.tv_nsec = (int)(-d*1e9+0.5)) > 0) {
t.tv_nsec = 1000000000 - t.tv_nsec;
f -= 1;
}
t.tv_sec = (time_t)f;
if (f != t.tv_sec) {
rb_raise(rb_eRangeError, "%f out of Time range", RFLOAT_VALUE(num));
}
}
break;
case T_BIGNUM:
t.tv_sec = NUM2TIMET(num);
if (interval && t.tv_sec < 0)
rb_raise(rb_eArgError, "%s must be positive", tstr);
t.tv_nsec = 0;
break;
default:
if (rb_respond_to(num, id_divmod)) {
ary = rb_check_array_type(rb_funcall(num, id_divmod, 1, INT2FIX(1)));
if (NIL_P(ary)) {
goto typeerror;
}
i = rb_ary_entry(ary, 0);
f = rb_ary_entry(ary, 1);
t.tv_sec = NUM2TIMET(i);
if (interval && t.tv_sec < 0)
rb_raise(rb_eArgError, "%s must be positive", tstr);
f = rb_funcall(f, id_mul, 1, INT2FIX(1000000000));
t.tv_nsec = NUM2LONG(f);
}
else {
typeerror:
rb_raise(rb_eTypeError, "can't convert %s into %s",
rb_obj_classname(num), tstr);
}
break;
}
return t;
}
static struct timeval
time_timeval(VALUE num, int interval)
{
struct timespec ts;
struct timeval tv;
ts = time_timespec(num, interval);
tv.tv_sec = (TYPEOF_TIMEVAL_TV_SEC)ts.tv_sec;
tv.tv_usec = (TYPEOF_TIMEVAL_TV_USEC)(ts.tv_nsec / 1000);
return tv;
}
struct timeval
rb_time_interval(VALUE num)
{
return time_timeval(num, Qtrue);
}
struct timeval
rb_time_timeval(VALUE time)
{
struct time_object *tobj;
struct timeval t;
struct timespec ts;
if (TYPE(time) == T_DATA && RDATA(time)->dfree == time_free) {
GetTimeval(time, tobj);
ts = timexv2timespec(tobj->timexv);
t.tv_sec = (TYPEOF_TIMEVAL_TV_SEC)ts.tv_sec;
t.tv_usec = (TYPEOF_TIMEVAL_TV_USEC)(ts.tv_nsec / 1000);
return t;
}
return time_timeval(time, Qfalse);
}
struct timespec
rb_time_timespec(VALUE time)
{
struct time_object *tobj;
struct timespec t;
if (TYPE(time) == T_DATA && RDATA(time)->dfree == time_free) {
GetTimeval(time, tobj);
t = timexv2timespec(tobj->timexv);
return t;
}
return time_timespec(time, Qfalse);
}
/*
* call-seq:
* Time.now => time
*
* Creates a new time object for the current time.
*
* Time.now #=> 2009-06-24 12:39:54 +0900
*/
static VALUE
time_s_now(VALUE klass)
{
return rb_class_new_instance(0, NULL, klass);
}
/*
* call-seq:
* Time.at(time) => time
* Time.at(seconds_with_frac) => time
* Time.at(seconds, microseconds_with_frac) => time
*
* Creates a new time object with the value given by <i>time</i>,
* the given number of <i>seconds_with_frac</i>, or
* <i>seconds</i> and <i>microseconds_with_frac</i> from the Epoch.
* <i>seconds_with_frac</i> and <i>microseconds_with_frac</i>
* can be Integer, Float, Rational, or other Numeric.
* non-portable feature allows the offset to be negative on some systems.
*
* Time.at(0) #=> 1969-12-31 18:00:00 -0600
* Time.at(Time.at(0)) #=> 1969-12-31 18:00:00 -0600
* Time.at(946702800) #=> 1999-12-31 23:00:00 -0600
* Time.at(-284061600) #=> 1960-12-31 00:00:00 -0600
* Time.at(946684800.2).usec #=> 200000
* Time.at(946684800, 123456.789).nsec #=> 123456789
*/
static VALUE
time_s_at(int argc, VALUE *argv, VALUE klass)
{
VALUE time, t, timexv;
if (rb_scan_args(argc, argv, "11", &time, &t) == 2) {
time = num_exact(time);
t = num_exact(t);
timexv = add(rb_time_magnify(time), mulquo(t, INT2FIX(TIME_SCALE), INT2FIX(1000000)));
t = time_new_timexv(klass, timexv);
}
else if (TYPE(time) == T_DATA && RDATA(time)->dfree == time_free) {
struct time_object *tobj, *tobj2;
GetTimeval(time, tobj);
t = time_new_timexv(klass, tobj->timexv);
GetTimeval(t, tobj2);
TIME_COPY_GMT(tobj2, tobj);
}
else {
timexv = rb_time_magnify(num_exact(time));
t = time_new_timexv(klass, timexv);
}
return t;
}
static const char months[][4] = {
"jan", "feb", "mar", "apr", "may", "jun",
"jul", "aug", "sep", "oct", "nov", "dec",
};
static long
obj2long(VALUE obj)
{
if (TYPE(obj) == T_STRING) {
obj = rb_str_to_inum(obj, 10, Qfalse);
}
return NUM2LONG(obj);
}
static VALUE
obj2vint(VALUE obj)
{
if (TYPE(obj) == T_STRING) {
obj = rb_str_to_inum(obj, 10, Qfalse);
}
else {
obj = rb_to_int(obj);
}
return obj;
}
static long
obj2subsecx(VALUE obj, VALUE *subsecx)
{
VALUE subsec;
if (TYPE(obj) == T_STRING) {
obj = rb_str_to_inum(obj, 10, Qfalse);
*subsecx = INT2FIX(0);
return NUM2LONG(obj);
}
divmodv(num_exact(obj), INT2FIX(1), &obj, &subsec);
*subsecx = rb_time_magnify(subsec);
return NUM2LONG(obj);
}
static long
usec2subsecx(VALUE obj)
{
if (TYPE(obj) == T_STRING) {
obj = rb_str_to_inum(obj, 10, Qfalse);
}
return mulquo(num_exact(obj), INT2FIX(TIME_SCALE), INT2FIX(1000000));
}
static int
month_arg(VALUE arg)
{
int i, mon;
VALUE s = rb_check_string_type(arg);
if (!NIL_P(s)) {
mon = 0;
for (i=0; i<12; i++) {
if (RSTRING_LEN(s) == 3 &&
STRCASECMP(months[i], RSTRING_PTR(s)) == 0) {
mon = i+1;
break;
}
}
if (mon == 0) {
char c = RSTRING_PTR(s)[0];
if ('0' <= c && c <= '9') {
mon = obj2long(s);
}
}
}
else {
mon = obj2long(arg);
}
return mon;
}
static void
validate_utc_offset(VALUE utc_offset)
{
if (le(utc_offset, INT2FIX(-86400)) || ge(utc_offset, INT2FIX(86400)))
rb_raise(rb_eArgError, "utc_offset out of range");
}
static void
validate_vtm(struct vtm *vtm)
{
if ( vtm->mon < 1 || vtm->mon > 12
|| vtm->mday < 1 || vtm->mday > 31
|| vtm->hour < 0 || vtm->hour > 24
|| (vtm->hour == 24 && (vtm->min > 0 || vtm->sec > 0))
|| vtm->min < 0 || vtm->min > 59
|| vtm->sec < 0 || vtm->sec > 60
|| lt(vtm->subsecx, INT2FIX(0)) || ge(vtm->subsecx, INT2FIX(TIME_SCALE))
|| (!NIL_P(vtm->utc_offset) && (validate_utc_offset(vtm->utc_offset), 0)))
rb_raise(rb_eArgError, "argument out of range");
}
static void
time_arg(int argc, VALUE *argv, struct vtm *vtm)
{
VALUE v[8];
vtm->year = INT2FIX(0);
vtm->mon = 0;
vtm->mday = 0;
vtm->hour = 0;
vtm->min = 0;
vtm->sec = 0;
vtm->subsecx = INT2FIX(0);
vtm->utc_offset = Qnil;
vtm->wday = 0;
vtm->yday = 0;
vtm->isdst = 0;
vtm->zone = "";
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];
v[6] = Qnil;
vtm->isdst = RTEST(argv[8]) ? 1 : 0;
}
else {
rb_scan_args(argc, argv, "17", &v[0],&v[1],&v[2],&v[3],&v[4],&v[5],&v[6],&v[7]);
/* v[6] may be usec or zone (parsedate) */
/* v[7] is wday (parsedate; ignored) */
vtm->wday = -1;
vtm->isdst = -1;
}
vtm->year = obj2vint(v[0]);
if (NIL_P(v[1])) {
vtm->mon = 1;
}
else {
vtm->mon = month_arg(v[1]);
}
if (NIL_P(v[2])) {
vtm->mday = 1;
}
else {
vtm->mday = obj2long(v[2]);
}
vtm->hour = NIL_P(v[3])?0:obj2long(v[3]);
vtm->min = NIL_P(v[4])?0:obj2long(v[4]);
if (!NIL_P(v[6]) && argc == 7) {
vtm->sec = NIL_P(v[5])?0:obj2long(v[5]);
vtm->subsecx = usec2subsecx(v[6]);
}
else {
/* when argc == 8, v[6] is timezone, but ignored */
vtm->sec = NIL_P(v[5])?0:obj2subsecx(v[5], &vtm->subsecx);
}
validate_vtm(vtm);
}
static int
leap_year_p(long y)
{
return ((y % 4 == 0) && (y % 100 != 0)) || (y % 400 == 0);
}
static time_t
timegm_noleapsecond(struct tm *tm)
{
long tm_year = tm->tm_year;
int tm_yday = tm->tm_mday;
if (leap_year_p(tm_year + 1900))
tm_yday += leap_year_yday_offset[tm->tm_mon];
else
tm_yday += common_year_yday_offset[tm->tm_mon];
/*
* `Seconds Since the Epoch' in SUSv3:
* tm_sec + tm_min*60 + tm_hour*3600 + tm_yday*86400 +
* (tm_year-70)*31536000 + ((tm_year-69)/4)*86400 -
* ((tm_year-1)/100)*86400 + ((tm_year+299)/400)*86400
*/
return tm->tm_sec + tm->tm_min*60 + tm->tm_hour*3600 +
(time_t)(tm_yday +
(tm_year-70)*365 +
DIV(tm_year-69,4) -
DIV(tm_year-1,100) +
DIV(tm_year+299,400))*86400;
}
#if 0
#define DEBUG_FIND_TIME_NUMGUESS
#define DEBUG_GUESSRANGE
#endif
#ifdef DEBUG_GUESSRANGE
#define DEBUG_REPORT_GUESSRANGE fprintf(stderr, "find time guess range: %ld - %ld : %lu\n", guess_lo, guess_hi, (unsigned_time_t)(guess_hi-guess_lo))
#else
#define DEBUG_REPORT_GUESSRANGE
#endif
#ifdef DEBUG_FIND_TIME_NUMGUESS
#define DEBUG_FIND_TIME_NUMGUESS_INC find_time_numguess++,
static unsigned long long find_time_numguess;
static VALUE find_time_numguess_getter(void)
{
return ULL2NUM(find_time_numguess);
}
#else
#define DEBUG_FIND_TIME_NUMGUESS_INC
#endif
static const char *
find_time_t(struct tm *tptr, int utc_p, time_t *tp)
{
time_t guess, guess0, guess_lo, guess_hi;
struct tm *tm, tm0, tm_lo, tm_hi;
int d;
int find_dst;
struct tm result;
int status;
#define GUESS(p) (DEBUG_FIND_TIME_NUMGUESS_INC (utc_p ? gmtime_with_leapsecond(p, &result) : LOCALTIME(p, result)))
guess_lo = TIMET_MIN;
guess_hi = TIMET_MAX;
find_dst = 0 < tptr->tm_isdst;
tm0 = *tptr;
if (tm0.tm_mon < 0) {
tm0.tm_mon = 0;
tm0.tm_mday = 1;
tm0.tm_hour = 0;
tm0.tm_min = 0;
tm0.tm_sec = 0;
}
else if (11 < tm0.tm_mon) {
tm0.tm_mon = 11;
tm0.tm_mday = 31;
tm0.tm_hour = 23;
tm0.tm_min = 59;
tm0.tm_sec = 60;
}
else if (tm0.tm_mday < 1) {
tm0.tm_mday = 1;
tm0.tm_hour = 0;
tm0.tm_min = 0;
tm0.tm_sec = 0;
}
else if ((d = (leap_year_p(1900 + tm0.tm_year) ?
leap_year_days_in_month :
common_year_days_in_month)[tm0.tm_mon]) < tm0.tm_mday) {
tm0.tm_mday = d;
tm0.tm_hour = 23;
tm0.tm_min = 59;
tm0.tm_sec = 60;
}
else if (tm0.tm_hour < 0) {
tm0.tm_hour = 0;
tm0.tm_min = 0;
tm0.tm_sec = 0;
}
else if (23 < tm0.tm_hour) {
tm0.tm_hour = 23;
tm0.tm_min = 59;
tm0.tm_sec = 60;
}
else if (tm0.tm_min < 0) {
tm0.tm_min = 0;
tm0.tm_sec = 0;
}
else if (59 < tm0.tm_min) {
tm0.tm_min = 59;
tm0.tm_sec = 60;
}
else if (tm0.tm_sec < 0) {
tm0.tm_sec = 0;
}
else if (60 < tm0.tm_sec) {
tm0.tm_sec = 60;
}
DEBUG_REPORT_GUESSRANGE;
guess0 = guess = timegm_noleapsecond(&tm0);
tm = GUESS(&guess);
if (tm) {
d = tmcmp(tptr, tm);
if (d == 0) { goto found; }
if (d < 0) {
guess_hi = guess;
guess -= 24 * 60 * 60;
}
else {
guess_lo = guess;
guess += 24 * 60 * 60;
}
DEBUG_REPORT_GUESSRANGE;
if (guess_lo < guess && guess < guess_hi && (tm = GUESS(&guess)) != NULL) {
d = tmcmp(tptr, tm);
if (d == 0) { goto found; }
if (d < 0)
guess_hi = guess;
else
guess_lo = guess;
DEBUG_REPORT_GUESSRANGE;
}
}
tm = GUESS(&guess_lo);
if (!tm) goto error;
d = tmcmp(tptr, tm);
if (d < 0) goto out_of_range;
if (d == 0) { guess = guess_lo; goto found; }
tm_lo = *tm;
tm = GUESS(&guess_hi);
if (!tm) goto error;
d = tmcmp(tptr, tm);
if (d > 0) goto out_of_range;
if (d == 0) { guess = guess_hi; goto found; }
tm_hi = *tm;
DEBUG_REPORT_GUESSRANGE;
status = 1;
while (guess_lo + 1 < guess_hi) {
if (status == 0) {
binsearch:
guess = guess_lo / 2 + guess_hi / 2;
if (guess <= guess_lo)
guess = guess_lo + 1;
else if (guess >= guess_hi)
guess = guess_hi - 1;
status = 1;
}
else {
if (status == 1) {
time_t guess0_hi = timegm_noleapsecond(&tm_hi);
guess = guess_hi - (guess0_hi - guess0);
if (guess == guess_hi) /* hh:mm:60 tends to cause this condition. */
guess--;
status = 2;
}
else if (status == 2) {
time_t guess0_lo = timegm_noleapsecond(&tm_lo);
guess = guess_lo + (guess0 - guess0_lo);
if (guess == guess_lo)
guess++;
status = 0;
}
if (guess <= guess_lo || guess_hi <= guess) {
/* Precious guess is invalid. try binary search. */
#ifdef DEBUG_GUESSRANGE
if (guess <= guess_lo) fprintf(stderr, "too small guess: %ld <= %ld\n", guess, guess_lo);
if (guess_hi <= guess) fprintf(stderr, "too big guess: %ld <= %ld\n", guess_hi, guess);
#endif
goto binsearch;
}
}
tm = GUESS(&guess);
if (!tm) goto error;
d = tmcmp(tptr, tm);
if (d < 0) {
guess_hi = guess;
tm_hi = *tm;
DEBUG_REPORT_GUESSRANGE;
}
else if (d > 0) {
guess_lo = guess;
tm_lo = *tm;
DEBUG_REPORT_GUESSRANGE;
}
else {
found:
if (!utc_p) {
/* If localtime is nonmonotonic, another result may exist. */
time_t guess2;
if (find_dst) {
guess2 = guess - 2 * 60 * 60;
tm = LOCALTIME(&guess2, result);
if (tm) {
if (tptr->tm_hour != (tm->tm_hour + 2) % 24 ||
tptr->tm_min != tm->tm_min ||
tptr->tm_sec != tm->tm_sec) {
guess2 -= (tm->tm_hour - tptr->tm_hour) * 60 * 60 +
(tm->tm_min - tptr->tm_min) * 60 +
(tm->tm_sec - tptr->tm_sec);
if (tptr->tm_mday != tm->tm_mday)
guess2 += 24 * 60 * 60;
if (guess != guess2) {
tm = LOCALTIME(&guess2, result);
if (tmcmp(tptr, tm) == 0) {
if (guess < guess2)
*tp = guess;
else
*tp = guess2;
return NULL;
}
}
}
}
}
else {
guess2 = guess + 2 * 60 * 60;
tm = LOCALTIME(&guess2, result);
if (tm) {
if ((tptr->tm_hour + 2) % 24 != tm->tm_hour ||
tptr->tm_min != tm->tm_min ||
tptr->tm_sec != tm->tm_sec) {
guess2 -= (tm->tm_hour - tptr->tm_hour) * 60 * 60 +
(tm->tm_min - tptr->tm_min) * 60 +
(tm->tm_sec - tptr->tm_sec);
if (tptr->tm_mday != tm->tm_mday)
guess2 -= 24 * 60 * 60;
if (guess != guess2) {
tm = LOCALTIME(&guess2, result);
if (tmcmp(tptr, tm) == 0) {
if (guess < guess2)
*tp = guess2;
else
*tp = guess;
return NULL;
}
}
}
}
}
}
*tp = guess;
return NULL;
}
}
/* Given argument has no corresponding time_t. Let's outerpolation. */
if (tm_lo.tm_year == tptr->tm_year && tm_lo.tm_mon == tptr->tm_mon) {
*tp = guess_lo +
(tptr->tm_mday - tm_lo.tm_mday) * 24 * 60 * 60 +
(tptr->tm_hour - tm_lo.tm_hour) * 60 * 60 +
(tptr->tm_min - tm_lo.tm_min) * 60 +
(tptr->tm_sec - tm_lo.tm_sec);
return NULL;
}
else if (tm_hi.tm_year == tptr->tm_year && tm_hi.tm_mon == tptr->tm_mon) {
*tp = guess_hi +
(tptr->tm_mday - tm_hi.tm_mday) * 24 * 60 * 60 +
(tptr->tm_hour - tm_hi.tm_hour) * 60 * 60 +
(tptr->tm_min - tm_hi.tm_min) * 60 +
(tptr->tm_sec - tm_hi.tm_sec);
return NULL;
}
out_of_range:
return "time out of range";
error:
return "gmtime/localtime error";
}
static int
vtmcmp(struct vtm *a, struct vtm *b)
{
if (ne(a->year, b->year))
return lt(a->year, b->year) ? -1 : 1;
else if (a->mon != b->mon)
return a->mon < b->mon ? -1 : 1;
else if (a->mday != b->mday)
return a->mday < b->mday ? -1 : 1;
else if (a->hour != b->hour)
return a->hour < b->hour ? -1 : 1;
else if (a->min != b->min)
return a->min < b->min ? -1 : 1;
else if (a->sec != b->sec)
return a->sec < b->sec ? -1 : 1;
else if (ne(a->subsecx, b->subsecx))
return lt(a->subsecx, b->subsecx) ? -1 : 1;
else
return 0;
}
static int
tmcmp(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 VALUE
time_utc_or_local(int argc, VALUE *argv, int utc_p, VALUE klass)
{
struct vtm vtm;
VALUE time;
time_arg(argc, argv, &vtm);
if (utc_p)
time = time_new_timexv(klass, timegmxv(&vtm));
else
time = time_new_timexv(klass, timelocalxv(&vtm));
if (utc_p) return time_gmtime(time);
return time_localtime(time);
}
/*
* call-seq:
* Time.utc(year) => time
* Time.utc(year, month) => time
* Time.utc(year, month, day) => time
* Time.utc(year, month, day, hour) => time
* Time.utc(year, month, day, hour, min) => time
* Time.utc(year, month, day, hour, min, sec_with_frac) => time
* Time.utc(year, month, day, hour, min, sec, usec_with_frac) => time
* Time.utc(sec, min, hour, day, month, year, wday, yday, isdst, tz) => time
* Time.gm(year) => time
* Time.gm(year, month) => time
* Time.gm(year, month, day) => time
* Time.gm(year, month, day, hour) => time
* Time.gm(year, month, day, hour, min) => time
* Time.gm(year, month, day, hour, min, sec_with_frac) => time
* Time.gm(year, month, day, hour, min, sec, usec_with_frac) => time
* Time.gm(sec, min, hour, day, month, year, wday, yday, isdst, tz) => time
*
* Creates a time based on given values, interpreted as UTC (GMT). The
* year must be specified. Other values default to the minimum value
* for that field (and may be <code>nil</code> or omitted). Months may
* be specified by numbers from 1 to 12, or by the three-letter English
* month names. Hours are specified on a 24-hour clock (0..23). Raises
* an <code>ArgumentError</code> if any values are out of range. Will
* also accept ten arguments in the order output by
* <code>Time#to_a</code>.
* <i>sec_with_frac</i> and <i>usec_with_frac</i> can have a fractional part.
*
* Time.utc(2000,"jan",1,20,15,1) #=> 2000-01-01 20:15:01 UTC
* Time.gm(2000,"jan",1,20,15,1) #=> 2000-01-01 20:15:01 UTC
*/
static VALUE
time_s_mkutc(int argc, VALUE *argv, VALUE klass)
{
return time_utc_or_local(argc, argv, Qtrue, klass);
}
/*
* call-seq:
* Time.local(year) => time
* Time.local(year, month) => time
* Time.local(year, month, day) => time
* Time.local(year, month, day, hour) => time
* Time.local(year, month, day, hour, min) => time
* Time.local(year, month, day, hour, min, sec_with_frac) => time
* Time.local(year, month, day, hour, min, sec, usec_with_frac) => time
* Time.local(sec, min, hour, day, month, year, wday, yday, isdst, tz) => time
* Time.mktime(year) => time
* Time.mktime(year, month) => time
* Time.mktime(year, month, day) => time
* Time.mktime(year, month, day, hour) => time
* Time.mktime(year, month, day, hour, min) => time
* Time.mktime(year, month, day, hour, min, sec_with_frac) => time
* Time.mktime(year, month, day, hour, min, sec, usec_with_frac) => time
* Time.mktime(sec, min, hour, day, month, year, wday, yday, isdst, tz) => time
*
* Same as <code>Time::gm</code>, but interprets the values in the
* local time zone.
*
* Time.local(2000,"jan",1,20,15,1) #=> 2000-01-01 20:15:01 -0600
*/
static VALUE
time_s_mktime(int argc, VALUE *argv, VALUE klass)
{
return time_utc_or_local(argc, argv, Qfalse, klass);
}
/*
* call-seq:
* time.to_i => int
* time.tv_sec => int
*
* Returns the value of <i>time</i> as an integer number of seconds
* since the Epoch.
*
* t = Time.now
* "%10.5f" % t.to_f #=> "1049896564.17839"
* t.to_i #=> 1049896564
*/
static VALUE
time_to_i(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
return div(tobj->timexv, INT2FIX(TIME_SCALE));
}
/*
* call-seq:
* time.to_f => float
*
* Returns the value of <i>time</i> as a floating point number of
* seconds since the Epoch.
*
* t = Time.now
* "%10.5f" % t.to_f #=> "1049896564.13654"
* t.to_i #=> 1049896564
*
* Note that IEEE 754 double is not accurate enough to represent
* nanoseconds from the Epoch.
*/
static VALUE
time_to_f(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
return rb_Float(rb_time_unmagnify(tobj->timexv));
}
/*
* call-seq:
* time.to_r => Rational
*
* Returns the value of <i>time</i> as a rational number of seconds
* since the Epoch.
*
* t = Time.now
* p t.to_r #=> (8807170717088293/8388608)
*
* This methods is intended to be used to get an accurate value
* representing nanoseconds from the Epoch. You can use this
* to convert time to another Epoch.
*/
static VALUE
time_to_r(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
return rb_time_unmagnify(tobj->timexv);
}
/*
* call-seq:
* time.usec => int
* time.tv_usec => int
*
* Returns just the number of microseconds for <i>time</i>.
*
* t = Time.now #=> 2007-11-19 08:03:26 -0600
* "%10.6f" % t.to_f #=> "1195481006.775195"
* t.usec #=> 775195
*/
static VALUE
time_usec(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
return rb_to_int(mulquo(mod(tobj->timexv, INT2FIX(TIME_SCALE)), INT2FIX(1000000), INT2FIX(TIME_SCALE)));
}
/*
* call-seq:
* time.nsec => int
* time.tv_nsec => int
*
* Returns just the number of nanoseconds for <i>time</i>.
*
* t = Time.now #=> 2007-11-17 15:18:03 +0900
* "%10.9f" % t.to_f #=> "1195280283.536151409"
* t.nsec #=> 536151406
*
* The lowest digit of to_f and nsec is different because
* IEEE 754 double is not accurate enough to represent
* nanoseconds from the Epoch.
* The accurate value is returned by nsec.
*/
static VALUE
time_nsec(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
return rb_to_int(mulquo(mod(tobj->timexv, INT2FIX(TIME_SCALE)), INT2FIX(1000000000), INT2FIX(TIME_SCALE)));
}
/*
* call-seq:
* time.subsec => number
*
* Returns just the fraction for <i>time</i>.
*
* The result is possibly rational.
*
* t = Time.now #=> 2009-03-26 22:33:12 +0900
* "%10.9f" % t.to_f #=> "1238074392.940563917"
* t.subsec #=> (94056401/100000000)
*
* The lowest digit of to_f and subsec is different because
* IEEE 754 double is not accurate enough to represent
* the rational.
* The accurate value is returned by subsec.
*/
static VALUE
time_subsec(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
return quo(mod(tobj->timexv, INT2FIX(TIME_SCALE)), INT2FIX(TIME_SCALE));
}
/*
* call-seq:
* time <=> other_time => -1, 0, +1
*
* Comparison---Compares <i>time</i> with <i>other_time</i>.
*
* t = Time.now #=> 2007-11-19 08:12:12 -0600
* t2 = t + 2592000 #=> 2007-12-19 08:12:12 -0600
* t <=> t2 #=> -1
* t2 <=> t #=> 1
*
* t = Time.now #=> 2007-11-19 08:13:38 -0600
* t2 = t + 0.1 #=> 2007-11-19 08:13:38 -0600
* t.nsec #=> 98222999
* t2.nsec #=> 198222999
* t <=> t2 #=> -1
* t2 <=> t #=> 1
* t <=> t #=> 0
*/
static VALUE
time_cmp(VALUE time1, VALUE time2)
{
struct time_object *tobj1, *tobj2;
int n;
GetTimeval(time1, tobj1);
if (TYPE(time2) == T_DATA && RDATA(time2)->dfree == time_free) {
GetTimeval(time2, tobj2);
n = rb_cmpint(cmp(tobj1->timexv, tobj2->timexv), tobj1->timexv, tobj2->timexv);
}
else {
VALUE cmp;
cmp = rb_funcall(time2, rb_intern("<=>"), 1, time1);
if (NIL_P(cmp)) return Qnil;
n = -rb_cmpint(cmp, time1, time2);
}
if (n == 0) return INT2FIX(0);
if (n > 0) return INT2FIX(1);
return INT2FIX(-1);
}
/*
* call-seq:
* time.eql?(other_time)
*
* Return <code>true</code> if <i>time</i> and <i>other_time</i> are
* both <code>Time</code> objects with the same seconds and fractional
* seconds.
*/
static VALUE
time_eql(VALUE time1, VALUE time2)
{
struct time_object *tobj1, *tobj2;
GetTimeval(time1, tobj1);
if (TYPE(time2) == T_DATA && RDATA(time2)->dfree == time_free) {
GetTimeval(time2, tobj2);
return rb_equal(tobj1->timexv, tobj2->timexv);
}
return Qfalse;
}
/*
* call-seq:
* time.utc? => true or false
* time.gmt? => true or false
*
* Returns <code>true</code> if <i>time</i> represents a time in UTC
* (GMT).
*
* t = Time.now #=> 2007-11-19 08:15:23 -0600
* t.utc? #=> false
* t = Time.gm(2000,"jan",1,20,15,1) #=> 2000-01-01 20:15:01 UTC
* t.utc? #=> true
*
* t = Time.now #=> 2007-11-19 08:16:03 -0600
* t.gmt? #=> false
* t = Time.gm(2000,1,1,20,15,1) #=> 2000-01-01 20:15:01 UTC
* t.gmt? #=> true
*/
static VALUE
time_utc_p(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (TIME_UTC_P(tobj)) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* time.hash => fixnum
*
* Return a hash code for this time object.
*/
static VALUE
time_hash(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
return rb_hash(tobj->timexv);
}
/* :nodoc: */
static VALUE
time_init_copy(VALUE copy, VALUE time)
{
struct time_object *tobj, *tcopy;
if (copy == time) return copy;
time_modify(copy);
if (TYPE(time) != T_DATA || RDATA(time)->dfree != time_free) {
rb_raise(rb_eTypeError, "wrong argument type");
}
GetTimeval(time, tobj);
GetTimeval(copy, tcopy);
MEMCPY(tcopy, tobj, struct time_object, 1);
return copy;
}
static VALUE
time_dup(VALUE time)
{
VALUE dup = time_s_alloc(CLASS_OF(time));
time_init_copy(dup, time);
return dup;
}
static VALUE
time_localtime(VALUE time)
{
struct time_object *tobj;
struct vtm vtm;
GetTimeval(time, tobj);
if (TIME_LOCALTIME_P(tobj)) {
if (tobj->tm_got)
return time;
}
else {
time_modify(time);
}
if (!localtimexv(tobj->timexv, &vtm))
rb_raise(rb_eArgError, "localtime error");
tobj->vtm = vtm;
tobj->tm_got = 1;
TIME_SET_LOCALTIME(tobj);
return time;
}
/*
* call-seq:
* time.localtime => time
* time.localtime(utc_offset) => time
*
* Converts <i>time</i> to local time (using the local time zone in
* effect for this process) modifying the receiver.
*
* If _utc_offset_ is given, it is used instead of the local time.
*
* t = Time.utc(2000, "jan", 1, 20, 15, 1) #=> 2000-01-01 20:15:01 UTC
* t.utc? #=> true
*
* t.localtime #=> 2000-01-01 14:15:01 -0600
* t.utc? #=> false
*
* t.localtime("+09:00") #=> 2000-01-02 05:15:01 +0900
* t.utc? #=> false
*/
static VALUE
time_localtime_m(int argc, VALUE *argv, VALUE time)
{
VALUE off;
rb_scan_args(argc, argv, "01", &off);
if (!NIL_P(off)) {
off = utc_offset_arg(off);
validate_utc_offset(off);
time_set_utc_offset(time, off);
return time_fixoff(time);
}
return time_localtime(time);
}
/*
* call-seq:
* time.gmtime => time
* time.utc => time
*
* Converts <i>time</i> to UTC (GMT), modifying the receiver.
*
* t = Time.now #=> 2007-11-19 08:18:31 -0600
* t.gmt? #=> false
* t.gmtime #=> 2007-11-19 14:18:31 UTC
* t.gmt? #=> true
*
* t = Time.now #=> 2007-11-19 08:18:51 -0600
* t.utc? #=> false
* t.utc #=> 2007-11-19 14:18:51 UTC
* t.utc? #=> true
*/
static VALUE
time_gmtime(VALUE time)
{
struct time_object *tobj;
struct vtm vtm;
GetTimeval(time, tobj);
if (TIME_UTC_P(tobj)) {
if (tobj->tm_got)
return time;
}
else {
time_modify(time);
}
if (!gmtimexv(tobj->timexv, &vtm))
rb_raise(rb_eArgError, "gmtime error");
tobj->vtm = vtm;
tobj->tm_got = 1;
TIME_SET_UTC(tobj);
return time;
}
static VALUE
time_fixoff(VALUE time)
{
struct time_object *tobj;
struct vtm vtm;
VALUE off;
GetTimeval(time, tobj);
if (TIME_FIXOFF_P(tobj)) {
if (tobj->tm_got)
return time;
}
else {
time_modify(time);
}
if (TIME_FIXOFF_P(tobj))
off = tobj->vtm.utc_offset;
else
off = INT2FIX(0);
if (!gmtimexv(tobj->timexv, &vtm))
rb_raise(rb_eArgError, "gmtime error");
tobj->vtm = vtm;
vtm_add_offset(&tobj->vtm, off);
tobj->tm_got = 1;
TIME_SET_FIXOFF(tobj, off);
return time;
}
/*
* call-seq:
* time.getlocal => new_time
* time.getlocal(utc_offset) => new_time
*
* Returns a new <code>new_time</code> object representing <i>time</i> in
* local time (using the local time zone in effect for this process).
*
* If _utc_offset_ is given, it is used instead of the local time.
*
* t = Time.utc(2000,1,1,20,15,1) #=> 2000-01-01 20:15:01 UTC
* t.utc? #=> true
*
* l = t.getlocal #=> 2000-01-01 14:15:01 -0600
* l.utc? #=> false
* t == l #=> true
*
* j = t.getlocal("+09:00") #=> 2000-01-02 05:15:01 +0900
* j.utc? #=> false
* t == j #=> true
*/
static VALUE
time_getlocaltime(int argc, VALUE *argv, VALUE time)
{
VALUE off;
rb_scan_args(argc, argv, "01", &off);
if (!NIL_P(off)) {
off = utc_offset_arg(off);
validate_utc_offset(off);
time = time_dup(time);
time_set_utc_offset(time, off);
return time_fixoff(time);
}
return time_localtime(time_dup(time));
}
/*
* call-seq:
* time.getgm => new_time
* time.getutc => new_time
*
* Returns a new <code>new_time</code> object representing <i>time</i> in
* UTC.
*
* t = Time.local(2000,1,1,20,15,1) #=> 2000-01-01 20:15:01 -0600
* t.gmt? #=> false
* y = t.getgm #=> 2000-01-02 02:15:01 UTC
* y.gmt? #=> true
* t == y #=> true
*/
static VALUE
time_getgmtime(VALUE time)
{
return time_gmtime(time_dup(time));
}
static VALUE
time_get_tm(VALUE time, struct time_object *tobj)
{
if (TIME_UTC_P(tobj)) return time_gmtime(time);
if (TIME_FIXOFF_P(tobj)) return time_fixoff(time);
return time_localtime(time);
}
static VALUE strftimev(const char *fmt, VALUE time);
/*
* call-seq:
* time.asctime => string
* time.ctime => string
*
* Returns a canonical string representation of <i>time</i>.
*
* Time.now.asctime #=> "Wed Apr 9 08:56:03 2003"
*/
static VALUE
time_asctime(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
return strftimev("%a %b %e %T %Y", time);
}
/*
* call-seq:
* time.inspect => string
* time.to_s => string
*
* Returns a string representing <i>time</i>. Equivalent to calling
* <code>Time#strftime</code> with a format string of
* ``<code>%Y-%m-%d</code> <code>%H:%M:%S</code> <code>%z</code>''
* for a local time and
* ``<code>%Y-%m-%d</code> <code>%H:%M:%S</code> <code>UTC</code>''
* for a UTC time.
*
* Time.now.to_s #=> "2007-10-05 16:09:51 +0900"
* Time.now.utc.to_s #=> "2007-10-05 07:09:51 UTC"
*/
static VALUE
time_to_s(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
if (TIME_UTC_P(tobj))
return strftimev("%Y-%m-%d %H:%M:%S UTC", time);
else
return strftimev("%Y-%m-%d %H:%M:%S %z", time);
}
static VALUE
time_add(struct time_object *tobj, VALUE offset, int sign)
{
VALUE result;
offset = num_exact(offset);
if (sign < 0)
result = time_new_timexv(rb_cTime, sub(tobj->timexv, rb_time_magnify(offset)));
else
result = time_new_timexv(rb_cTime, add(tobj->timexv, rb_time_magnify(offset)));
if (TIME_UTC_P(tobj)) {
GetTimeval(result, tobj);
TIME_SET_UTC(tobj);
}
return result;
}
/*
* call-seq:
* time + numeric => time
*
* Addition---Adds some number of seconds (possibly fractional) to
* <i>time</i> and returns that value as a new time.
*
* t = Time.now #=> 2007-11-19 08:22:21 -0600
* t + (60 * 60 * 24) #=> 2007-11-20 08:22:21 -0600
*/
static VALUE
time_plus(VALUE time1, VALUE time2)
{
struct time_object *tobj;
GetTimeval(time1, tobj);
if (TYPE(time2) == T_DATA && RDATA(time2)->dfree == time_free) {
rb_raise(rb_eTypeError, "time + time?");
}
return time_add(tobj, time2, 1);
}
/*
* call-seq:
* time - other_time => float
* time - numeric => time
*
* Difference---Returns a new time that represents the difference
* between two times, or subtracts the given number of seconds in
* <i>numeric</i> from <i>time</i>.
*
* t = Time.now #=> 2007-11-19 08:23:10 -0600
* t2 = t + 2592000 #=> 2007-12-19 08:23:10 -0600
* t2 - t #=> 2592000.0
* t2 - 2592000 #=> 2007-11-19 08:23:10 -0600
*/
static VALUE
time_minus(VALUE time1, VALUE time2)
{
struct time_object *tobj;
GetTimeval(time1, tobj);
if (TYPE(time2) == T_DATA && RDATA(time2)->dfree == time_free) {
struct time_object *tobj2;
GetTimeval(time2, tobj2);
return rb_Float(rb_time_unmagnify(sub(tobj->timexv, tobj2->timexv)));
}
return time_add(tobj, time2, -1);
}
/*
* call-seq:
* time.succ => new_time
*
* Return a new time object, one second later than <code>time</code>.
*
* t = Time.now #=> 2007-11-19 08:23:57 -0600
* t.succ #=> 2007-11-19 08:23:58 -0600
*/
static VALUE
time_succ(VALUE time)
{
struct time_object *tobj;
struct time_object *tobj2;
GetTimeval(time, tobj);
time = time_new_timexv(rb_cTime, add(tobj->timexv, INT2FIX(TIME_SCALE)));
GetTimeval(time, tobj2);
TIME_COPY_GMT(tobj2, tobj);
return time;
}
VALUE
rb_time_succ(VALUE time)
{
return time_succ(time);
}
/*
* call-seq:
* time.sec => fixnum
*
* Returns the second of the minute (0..60)<em>[Yes, seconds really can
* range from zero to 60. This allows the system to inject leap seconds
* every now and then to correct for the fact that years are not really
* a convenient number of hours long.]</em> for <i>time</i>.
*
* t = Time.now #=> 2007-11-19 08:25:02 -0600
* t.sec #=> 2
*/
static VALUE
time_sec(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return INT2FIX(tobj->vtm.sec);
}
/*
* call-seq:
* time.min => fixnum
*
* Returns the minute of the hour (0..59) for <i>time</i>.
*
* t = Time.now #=> 2007-11-19 08:25:51 -0600
* t.min #=> 25
*/
static VALUE
time_min(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return INT2FIX(tobj->vtm.min);
}
/*
* call-seq:
* time.hour => fixnum
*
* Returns the hour of the day (0..23) for <i>time</i>.
*
* t = Time.now #=> 2007-11-19 08:26:20 -0600
* t.hour #=> 8
*/
static VALUE
time_hour(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return INT2FIX(tobj->vtm.hour);
}
/*
* call-seq:
* time.day => fixnum
* time.mday => fixnum
*
* Returns the day of the month (1..n) for <i>time</i>.
*
* t = Time.now #=> 2007-11-19 08:27:03 -0600
* t.day #=> 19
* t.mday #=> 19
*/
static VALUE
time_mday(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return INT2FIX(tobj->vtm.mday);
}
/*
* call-seq:
* time.mon => fixnum
* time.month => fixnum
*
* Returns the month of the year (1..12) for <i>time</i>.
*
* t = Time.now #=> 2007-11-19 08:27:30 -0600
* t.mon #=> 11
* t.month #=> 11
*/
static VALUE
time_mon(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return INT2FIX(tobj->vtm.mon);
}
/*
* call-seq:
* time.year => fixnum
*
* Returns the year for <i>time</i> (including the century).
*
* t = Time.now #=> 2007-11-19 08:27:51 -0600
* t.year #=> 2007
*/
static VALUE
time_year(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return tobj->vtm.year;
}
/*
* call-seq:
* time.wday => fixnum
*
* Returns an integer representing the day of the week, 0..6, with
* Sunday == 0.
*
* t = Time.now #=> 2007-11-20 02:35:35 -0600
* t.wday #=> 2
* t.sunday? #=> false
* t.monday? #=> false
* t.tuesday? #=> true
* t.wednesday? #=> false
* t.thursday? #=> false
* t.friday? #=> false
* t.saturday? #=> false
*/
static VALUE
time_wday(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return INT2FIX(tobj->vtm.wday);
}
#define wday_p(n) {\
struct time_object *tobj;\
GetTimeval(time, tobj);\
MAKE_TM(time, tobj);\
return (tobj->vtm.wday == (n)) ? Qtrue : Qfalse;\
}
/*
* call-seq:
* time.sunday? => true or false
*
* Returns <code>true</code> if <i>time</i> represents Sunday.
*
* t = Time.local(1990, 4, 1) #=> 1990-04-01 00:00:00 -0600
* t.sunday? #=> true
*/
static VALUE
time_sunday(VALUE time)
{
wday_p(0);
}
/*
* call-seq:
* time.monday? => true or false
*
* Returns <code>true</code> if <i>time</i> represents Monday.
*
* t = Time.local(2003, 8, 4) #=> 2003-08-04 00:00:00 -0500
* p t.monday? #=> true
*/
static VALUE
time_monday(VALUE time)
{
wday_p(1);
}
/*
* call-seq:
* time.tuesday? => true or false
*
* Returns <code>true</code> if <i>time</i> represents Tuesday.
*
* t = Time.local(1991, 2, 19) #=> 1991-02-19 00:00:00 -0600
* p t.tuesday? #=> true
*/
static VALUE
time_tuesday(VALUE time)
{
wday_p(2);
}
/*
* call-seq:
* time.wednesday? => true or false
*
* Returns <code>true</code> if <i>time</i> represents Wednesday.
*
* t = Time.local(1993, 2, 24) #=> 1993-02-24 00:00:00 -0600
* p t.wednesday? #=> true
*/
static VALUE
time_wednesday(VALUE time)
{
wday_p(3);
}
/*
* call-seq:
* time.thursday? => true or false
*
* Returns <code>true</code> if <i>time</i> represents Thursday.
*
* t = Time.local(1995, 12, 21) #=> 1995-12-21 00:00:00 -0600
* p t.thursday? #=> true
*/
static VALUE
time_thursday(VALUE time)
{
wday_p(4);
}
/*
* call-seq:
* time.friday? => true or false
*
* Returns <code>true</code> if <i>time</i> represents Friday.
*
* t = Time.local(1987, 12, 18) #=> 1987-12-18 00:00:00 -0600
* t.friday? #=> true
*/
static VALUE
time_friday(VALUE time)
{
wday_p(5);
}
/*
* call-seq:
* time.saturday? => true or false
*
* Returns <code>true</code> if <i>time</i> represents Saturday.
*
* t = Time.local(2006, 6, 10) #=> 2006-06-10 00:00:00 -0500
* t.saturday? #=> true
*/
static VALUE
time_saturday(VALUE time)
{
wday_p(6);
}
/*
* call-seq:
* time.yday => fixnum
*
* Returns an integer representing the day of the year, 1..366.
*
* t = Time.now #=> 2007-11-19 08:32:31 -0600
* t.yday #=> 323
*/
static VALUE
time_yday(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return INT2FIX(tobj->vtm.yday);
}
/*
* call-seq:
* time.isdst => true or false
* time.dst? => true or false
*
* Returns <code>true</code> if <i>time</i> occurs during Daylight
* Saving Time in its time zone.
*
* # CST6CDT:
* Time.local(2000, 1, 1).zone #=> "CST"
* Time.local(2000, 1, 1).isdst #=> false
* Time.local(2000, 1, 1).dst? #=> false
* Time.local(2000, 7, 1).zone #=> "CDT"
* Time.local(2000, 7, 1).isdst #=> true
* Time.local(2000, 7, 1).dst? #=> true
*
* # Asia/Tokyo:
* Time.local(2000, 1, 1).zone #=> "JST"
* Time.local(2000, 1, 1).isdst #=> false
* Time.local(2000, 1, 1).dst? #=> false
* Time.local(2000, 7, 1).zone #=> "JST"
* Time.local(2000, 7, 1).isdst #=> false
* Time.local(2000, 7, 1).dst? #=> false
*/
static VALUE
time_isdst(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return tobj->vtm.isdst ? Qtrue : Qfalse;
}
/*
* call-seq:
* time.zone => string
*
* Returns the name of the time zone used for <i>time</i>. As of Ruby
* 1.8, returns ``UTC'' rather than ``GMT'' for UTC times.
*
* t = Time.gm(2000, "jan", 1, 20, 15, 1)
* t.zone #=> "UTC"
* t = Time.local(2000, "jan", 1, 20, 15, 1)
* t.zone #=> "CST"
*/
static VALUE
time_zone(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
if (TIME_UTC_P(tobj)) {
return rb_str_new2("UTC");
}
if (tobj->vtm.zone == NULL)
return Qnil;
return rb_str_new2(tobj->vtm.zone);
}
/*
* call-seq:
* time.gmt_offset => fixnum
* time.gmtoff => fixnum
* time.utc_offset => fixnum
*
* Returns the offset in seconds between the timezone of <i>time</i>
* and UTC.
*
* t = Time.gm(2000,1,1,20,15,1) #=> 2000-01-01 20:15:01 UTC
* t.gmt_offset #=> 0
* l = t.getlocal #=> 2000-01-01 14:15:01 -0600
* l.gmt_offset #=> -21600
*/
static VALUE
time_utc_offset(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
if (TIME_UTC_P(tobj)) {
return INT2FIX(0);
}
else {
return tobj->vtm.utc_offset;
}
}
/*
* call-seq:
* time.to_a => array
*
* Returns a ten-element <i>array</i> of values for <i>time</i>:
* {<code>[ sec, min, hour, day, month, year, wday, yday, isdst, zone
* ]</code>}. See the individual methods for an explanation of the
* valid ranges of each value. The ten elements can be passed directly
* to <code>Time::utc</code> or <code>Time::local</code> to create a
* new <code>Time</code>.
*
* t = Time.now #=> 2007-11-19 08:36:01 -0600
* now = t.to_a #=> [1, 36, 8, 19, 11, 2007, 1, 323, false, "CST"]
*/
static VALUE
time_to_a(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
return rb_ary_new3(10,
INT2FIX(tobj->vtm.sec),
INT2FIX(tobj->vtm.min),
INT2FIX(tobj->vtm.hour),
INT2FIX(tobj->vtm.mday),
INT2FIX(tobj->vtm.mon),
tobj->vtm.year,
INT2FIX(tobj->vtm.wday),
INT2FIX(tobj->vtm.yday),
tobj->vtm.isdst?Qtrue:Qfalse,
time_zone(time));
}
size_t
rb_strftime(char *s, size_t maxsize, const char *format,
const struct vtm *vtm, VALUE timev,
int gmt);
#define SMALLBUF 100
static int
rb_strftime_alloc(char **buf, const char *format,
struct vtm *vtm, VALUE timev, int gmt)
{
int size, len, flen;
(*buf)[0] = '\0';
flen = strlen(format);
if (flen == 0) {
return 0;
}
errno = 0;
len = rb_strftime(*buf, SMALLBUF, format, vtm, timev, gmt);
if (len != 0 || (**buf == '\0' && errno != ERANGE)) return len;
for (size=1024; ; size*=2) {
*buf = xmalloc(size);
(*buf)[0] = '\0';
len = rb_strftime(*buf, size, format, vtm, timev, gmt);
/*
* 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 || size >= 1024 * flen) return len;
xfree(*buf);
}
/* not reached */
}
static VALUE
strftimev(const char *fmt, VALUE time)
{
struct time_object *tobj;
char buffer[SMALLBUF], *buf = buffer;
long len;
VALUE str;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
len = rb_strftime_alloc(&buf, fmt, &tobj->vtm, rb_time_unmagnify(tobj->timexv), TIME_UTC_P(tobj));
str = rb_str_new(buf, len);
if (buf != buffer) xfree(buf);
return str;
}
/*
* call-seq:
* time.strftime( string ) => string
*
* Formats <i>time</i> according to the directives in the given format
* string. Any text not listed as a directive will be passed through
* to the output string.
*
* Format meaning:
* %a - The abbreviated weekday name (``Sun'')
* %A - The full weekday name (``Sunday'')
* %b - The abbreviated month name (``Jan'')
* %B - The full month name (``January'')
* %c - The preferred local date and time representation
* %C - Century (20 in 2009)
* %d - Day of the month (01..31)
* %D - Date (%m/%d/%y)
* %e - Day of the month, blank-padded ( 1..31)
* %F - Equivalent to %Y-%m-%d (the ISO 8601 date format)
* %h - Equivalent to %b
* %H - Hour of the day, 24-hour clock (00..23)
* %I - Hour of the day, 12-hour clock (01..12)
* %j - Day of the year (001..366)
* %k - hour, 24-hour clock, blank-padded ( 0..23)
* %l - hour, 12-hour clock, blank-padded ( 0..12)
* %L - Millisecond of the second (000..999)
* %m - Month of the year (01..12)
* %M - Minute of the hour (00..59)
* %n - Newline (\n)
* %N - Fractional seconds digits, default is 9 digits (nanosecond)
* %3N millisecond (3 digits)
* %6N microsecond (6 digits)
* %9N nanosecond (9 digits)
* %p - Meridian indicator (``AM'' or ``PM'')
* %P - Meridian indicator (``am'' or ``pm'')
* %r - time, 12-hour (same as %I:%M:%S %p)
* %R - time, 24-hour (%H:%M)
* %s - Number of seconds since 1970-01-01 00:00:00 UTC.
* %S - Second of the minute (00..60)
* %t - Tab character (\t)
* %T - time, 24-hour (%H:%M:%S)
* %u - Day of the week as a decimal, Monday being 1. (1..7)
* %U - Week number of the current year,
* starting with the first Sunday as the first
* day of the first week (00..53)
* %v - VMS date (%e-%b-%Y)
* %V - Week number of year according to ISO 8601 (01..53)
* %W - Week number of the current year,
* starting with the first Monday as the first
* day of the first week (00..53)
* %w - Day of the week (Sunday is 0, 0..6)
* %x - Preferred representation for the date alone, no time
* %X - Preferred representation for the time alone, no date
* %y - Year without a century (00..99)
* %Y - Year with century
* %z - Time zone as hour offset from UTC (e.g. +0900)
* %Z - Time zone name
* %% - Literal ``%'' character
*
* t = Time.now #=> 2007-11-19 08:37:48 -0600
* t.strftime("Printed on %m/%d/%Y") #=> "Printed on 11/19/2007"
* t.strftime("at %I:%M%p") #=> "at 08:37AM"
*/
static VALUE
time_strftime(VALUE time, VALUE format)
{
void rb_enc_copy(VALUE, VALUE);
struct time_object *tobj;
char buffer[SMALLBUF], *buf = buffer;
const char *fmt;
long len;
VALUE str;
GetTimeval(time, tobj);
MAKE_TM(time, tobj);
StringValue(format);
if (!rb_enc_str_asciicompat_p(format)) {
rb_raise(rb_eArgError, "format should have ASCII compatible encoding");
}
format = rb_str_new4(format);
fmt = RSTRING_PTR(format);
len = RSTRING_LEN(format);
if (len == 0) {
rb_warning("strftime called with empty format string");
}
else if (memchr(fmt, '\0', len)) {
/* Ruby string may contain \0's. */
const char *p = fmt, *pe = fmt + len;
str = rb_str_new(0, 0);
while (p < pe) {
len = rb_strftime_alloc(&buf, p, &tobj->vtm, rb_time_unmagnify(tobj->timexv), TIME_UTC_P(tobj));
rb_str_cat(str, buf, len);
p += strlen(p);
if (buf != buffer) {
xfree(buf);
buf = buffer;
}
for (fmt = p; p < pe && !*p; ++p);
if (p > fmt) rb_str_cat(str, fmt, p - fmt);
}
return str;
}
else {
len = rb_strftime_alloc(&buf, RSTRING_PTR(format),
&tobj->vtm, rb_time_unmagnify(tobj->timexv), TIME_UTC_P(tobj));
}
str = rb_str_new(buf, len);
if (buf != buffer) xfree(buf);
rb_enc_copy(str, format);
return str;
}
/*
* undocumented
*/
static VALUE
time_mdump(VALUE time)
{
struct time_object *tobj;
unsigned long p, s;
char buf[8];
int i;
VALUE str;
struct vtm vtm;
long year;
long usec, nsec;
VALUE subsecx, nano, subnano, v;
GetTimeval(time, tobj);
gmtimexv(tobj->timexv, &vtm);
if (FIXNUM_P(vtm.year)) {
year = FIX2LONG(vtm.year);
if (year < 1900 || 1900+0xffff < year)
rb_raise(rb_eArgError, "year too big to marshal: %ld", year);
}
else {
rb_raise(rb_eArgError, "year too big to marshal");
}
subsecx = vtm.subsecx;
nano = mulquo(subsecx, INT2FIX(1000000000), INT2FIX(TIME_SCALE));
divmodv(nano, INT2FIX(1), &v, &subnano);
nsec = FIX2LONG(v);
usec = nsec / 1000;
nsec = nsec % 1000;
p = 0x1UL << 31 | /* 1 */
TIME_UTC_P(tobj) << 30 | /* 1 */
(year-1900) << 14 | /* 16 */
(vtm.mon-1) << 10 | /* 4 */
vtm.mday << 5 | /* 5 */
vtm.hour; /* 5 */
s = vtm.min << 26 | /* 6 */
vtm.sec << 20 | /* 6 */
usec; /* 20 */
for (i=0; i<4; i++) {
buf[i] = (unsigned char)p;
p = RSHIFT(p, 8);
}
for (i=4; i<8; i++) {
buf[i] = (unsigned char)s;
s = RSHIFT(s, 8);
}
str = rb_str_new(buf, 8);
rb_copy_generic_ivar(str, time);
if (nsec) {
/*
* submicro is formatted in fixed-point packed BCD (without sign).
* It represent digits under microsecond.
* For nanosecond resolution, 3 digits (2 bytes) are used.
* However it can be longer.
* Extra digits are ignored for loading.
*/
unsigned char buf[2];
int len = sizeof(buf);
buf[1] = (nsec % 10) << 4;
nsec /= 10;
buf[0] = nsec % 10;
nsec /= 10;
buf[0] |= (nsec % 10) << 4;
if (buf[1] == 0)
len = 1;
rb_ivar_set(str, id_submicro, rb_str_new((char *)buf, len));
}
if (!rb_equal(subnano, INT2FIX(0))) {
rb_ivar_set(str, id_subnano, subnano);
}
return str;
}
/*
* call-seq:
* time._dump => string
*
* Dump _time_ for marshaling.
*/
static VALUE
time_dump(int argc, VALUE *argv, VALUE time)
{
VALUE str;
rb_scan_args(argc, argv, "01", 0);
str = time_mdump(time);
return str;
}
/*
* undocumented
*/
static VALUE
time_mload(VALUE time, VALUE str)
{
struct time_object *tobj;
unsigned long p, s;
time_t sec;
long usec;
unsigned char *buf;
struct vtm vtm;
int i, gmt;
long nsec;
VALUE timexv, submicro, subnano;
time_modify(time);
submicro = rb_attr_get(str, id_submicro);
if (submicro != Qnil) {
st_delete(rb_generic_ivar_table(str), (st_data_t*)&id_submicro, 0);
}
subnano = rb_attr_get(str, id_subnano);
if (subnano != Qnil) {
st_delete(rb_generic_ivar_table(str), (st_data_t*)&id_subnano, 0);
}
rb_copy_generic_ivar(time, str);
StringValue(str);
buf = (unsigned char *)RSTRING_PTR(str);
if (RSTRING_LEN(str) != 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 & (1UL<<31)) == 0) {
gmt = 0;
sec = p;
usec = s;
nsec = usec * 1000;
timexv = add(rb_time_magnify(TIMET2NUM(sec)), mulquo(LONG2FIX(usec), INT2FIX(TIME_SCALE), LONG2FIX(1000000)));
}
else {
p &= ~(1UL<<31);
gmt = (p >> 30) & 0x1;
vtm.year = INT2FIX(((p >> 14) & 0xffff) + 1900);
vtm.mon = ((p >> 10) & 0xf) + 1;
vtm.mday = (p >> 5) & 0x1f;
vtm.hour = p & 0x1f;
vtm.min = (s >> 26) & 0x3f;
vtm.sec = (s >> 20) & 0x3f;
vtm.utc_offset = INT2FIX(0);
vtm.yday = vtm.wday = 0;
vtm.isdst = 0;
vtm.zone = "";
usec = (long)(s & 0xfffff);
nsec = usec * 1000;
if (submicro != Qnil) {
unsigned char *ptr;
long len;
int digit;
ptr = (unsigned char*)StringValuePtr(submicro);
len = RSTRING_LEN(submicro);
if (0 < len) {
if (10 <= (digit = ptr[0] >> 4)) goto end_submicro;
nsec += digit * 100;
if (10 <= (digit = ptr[0] & 0xf)) goto end_submicro;
nsec += digit * 10;
}
if (1 < len) {
if (10 <= (digit = ptr[1] >> 4)) goto end_submicro;
nsec += digit;
}
end_submicro: ;
}
vtm.subsecx = mulquo(LONG2FIX(nsec), INT2FIX(TIME_SCALE), LONG2FIX(1000000000));
if (subnano != Qnil) {
subnano = num_exact(subnano);
vtm.subsecx = add(vtm.subsecx, mulquo(subnano, INT2FIX(TIME_SCALE), LONG2FIX(1000000000)));
}
timexv = timegmxv(&vtm);
}
GetTimeval(time, tobj);
tobj->tm_got = 0;
if (gmt) TIME_SET_UTC(tobj);
tobj->timexv = timexv;
return time;
}
/*
* call-seq:
* Time._load(string) => time
*
* Unmarshal a dumped +Time+ object.
*/
static VALUE
time_load(VALUE klass, VALUE str)
{
VALUE time = time_s_alloc(klass);
time_mload(time, str);
return time;
}
/*
* <code>Time</code> is an abstraction of dates and times. Time is
* stored internally as the number of seconds with fraction since
* the <em>Epoch</em>, January 1, 1970 00:00 UTC.
* Also see the library modules <code>Date</code>.
* The <code>Time</code> class treats GMT (Greenwich Mean Time) and
* UTC (Coordinated Universal Time)<em>[Yes, UTC really does stand for
* Coordinated Universal Time. There was a committee involved.]</em>
* as equivalent. GMT is the older way of referring to these
* baseline times but persists in the names of calls on POSIX
* systems.
*
* All times may have fraction. Be aware of
* this fact when comparing times with each other---times that are
* apparently equal when displayed may be different when compared.
*/
void
Init_Time(void)
{
#undef rb_intern
#define rb_intern(str) rb_intern_const(str)
id_eq = rb_intern("==");
id_ne = rb_intern("!=");
id_quo = rb_intern("quo");
id_div = rb_intern("div");
id_cmp = rb_intern("<=>");
id_lshift = rb_intern("<<");
id_divmod = rb_intern("divmod");
id_mul = rb_intern("*");
id_submicro = rb_intern("submicro");
id_subnano = rb_intern("subnano");
rb_cTime = rb_define_class("Time", rb_cObject);
rb_include_module(rb_cTime, rb_mComparable);
rb_define_alloc_func(rb_cTime, time_s_alloc);
rb_define_singleton_method(rb_cTime, "now", time_s_now, 0);
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_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, "to_r", time_to_r, 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, "initialize", time_init, -1);
rb_define_method(rb_cTime, "initialize_copy", time_init_copy, 1);
rb_define_method(rb_cTime, "localtime", time_localtime_m, -1);
rb_define_method(rb_cTime, "gmtime", time_gmtime, 0);
rb_define_method(rb_cTime, "utc", time_gmtime, 0);
rb_define_method(rb_cTime, "getlocal", time_getlocaltime, -1);
rb_define_method(rb_cTime, "getgm", time_getgmtime, 0);
rb_define_method(rb_cTime, "getutc", time_getgmtime, 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, "succ", time_succ, 0);
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, "gmtoff", time_utc_offset, 0);
rb_define_method(rb_cTime, "gmt_offset", time_utc_offset, 0);
rb_define_method(rb_cTime, "utc_offset", time_utc_offset, 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, "sunday?", time_sunday, 0);
rb_define_method(rb_cTime, "monday?", time_monday, 0);
rb_define_method(rb_cTime, "tuesday?", time_tuesday, 0);
rb_define_method(rb_cTime, "wednesday?", time_wednesday, 0);
rb_define_method(rb_cTime, "thursday?", time_thursday, 0);
rb_define_method(rb_cTime, "friday?", time_friday, 0);
rb_define_method(rb_cTime, "saturday?", time_saturday, 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, "tv_nsec", time_nsec, 0);
rb_define_method(rb_cTime, "nsec", time_nsec, 0);
rb_define_method(rb_cTime, "subsec", time_subsec, 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);
#if 0
/* Time will support marshal_dump and marshal_load in the future (1.9 maybe) */
rb_define_method(rb_cTime, "marshal_dump", time_mdump, 0);
rb_define_method(rb_cTime, "marshal_load", time_mload, 1);
#endif
#ifdef DEBUG_FIND_TIME_NUMGUESS
rb_define_virtual_variable("$find_time_numguess", find_time_numguess_getter, NULL);
#endif
}
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