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* time.c: support fixed UTC offset. [ruby-dev:38326]

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(leap_year_v_p): new macro.
  (TIME_FIXOFF_P): new macro.
  (TIME_SET_FIXOFF): new macro.
  (time_init_0): renamed from time_init.
  (time_set_utc_offset): new function.
  (vtm_add_offset): new function.
  (utc_offset_arg): new function.
  (time_init_1): new function.
  (time_init): call time_init_0 or time_init_1 according argc.
  (validate_utc_offset): new function.
  (time_localtime_m): new function.
  (time_fixoff): new function.
  (time_getlocaltime): take optional UTC offset argument.
  (time_get_tm): support fixed UTC offset time.
  (Init_Time): make Time#{initialize,localtime,getlocal} varargs.

* strftime.c (rb_strftime): vtm->zone can be NULL now.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23415 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2009-05-12 12:07:49 +00:00
parent fab2a85c45
commit f64e076260
4 changed files with 432 additions and 40 deletions
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21
ChangeLog
View file

@ -1,3 +1,24 @@
Tue May 12 21:03:02 2009 Tanaka Akira <akr@fsij.org>
* time.c: support fixed UTC offset. [ruby-dev:38326]
(leap_year_v_p): new macro.
(TIME_FIXOFF_P): new macro.
(TIME_SET_FIXOFF): new macro.
(time_init_0): renamed from time_init.
(time_set_utc_offset): new function.
(vtm_add_offset): new function.
(utc_offset_arg): new function.
(time_init_1): new function.
(time_init): call time_init_0 or time_init_1 according argc.
(validate_utc_offset): new function.
(time_localtime_m): new function.
(time_fixoff): new function.
(time_getlocaltime): take optional UTC offset argument.
(time_get_tm): support fixed UTC offset time.
(Init_Time): make Time#{initialize,localtime,getlocal} varargs.
* strftime.c (rb_strftime): vtm->zone can be NULL now.
Tue May 12 18:23:40 2009 NAKAMURA Usaku <usa@ruby-lang.org>
* yarvtest: removed because it's outdated.

2
NEWS
View file

@ -51,6 +51,8 @@ with all sufficient information, see the ChangeLog file.
* extended feature:
* time_t restriction is removed to represent before 1901 and after 2038.
Proleptic Gregorian calendar is used for old dates.
* Time.new have optional arguments to specify date with time offset.
* Time#getlocal, Time#localtime have optional time offset argument.
* incompatible changes:
* The year argument of Time.{utc,gm,local,mktime} is now interpreted as

5
strftime.c
View file

@ -610,7 +610,10 @@ rb_strftime(char *s, size_t maxsize, const char *format, const struct vtm *vtm,
#endif /* HAVE_TM_ZONE */
#endif /* HAVE_TZNAME */
#endif /* 0 */
tp = vtm->zone;
if (vtm->zone == NULL)
tp = "";
else
tp = vtm->zone;
i = strlen(tp);
break;

444
time.c
View file

@ -48,8 +48,14 @@ typedef unsigned LONG_LONG unsigned_time_t;
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_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);
@ -59,6 +65,7 @@ static const char *find_time_t(struct tm *tptr, int utc_p, time_t *tp);
static struct vtm *localtimev(VALUE timev, 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)
@ -1002,6 +1009,12 @@ struct time_object {
#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 *);
@ -1082,25 +1095,8 @@ timev2timespec(VALUE timev)
* initialized to the current system time.
*/
/*
* call-seq:
* Time.new -> time
*
* Returns a <code>Time</code> object initialized to the current system
* time. <b>Note:</b> The object created will be created using the
* resolution available on your system clock, and so may include
* fractional seconds.
*
* 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"
*
*/
static VALUE
time_init(VALUE time)
time_init_0(VALUE time)
{
struct time_object *tobj;
struct timespec ts;
@ -1128,6 +1124,289 @@ time_init(VALUE time)
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->subsec = add(vtm->subsec, subsec);
if (lt(vtm->subsec, INT2FIX(0))) {
vtm->subsec = add(vtm->subsec, INT2FIX(1));
sec -= 1;
}
if (le(INT2FIX(1), vtm->subsec)) {
vtm->subsec = sub(vtm->subsec, INT2FIX(1));
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];
int i;
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.subsec = 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.subsec = subsec;
}
vtm.isdst = -1;
vtm.utc_offset = Qnil;
if (!NIL_P(v[6])) {
VALUE arg = v[6];
VALUE tmp;
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->timev = INT2FIX(0);
if (!NIL_P(vtm.utc_offset)) {
VALUE off = vtm.utc_offset;
vtm_add_offset(&vtm, neg(off));
vtm.utc_offset = Qnil;
tobj->timev = timegmv(&vtm);
return time_set_utc_offset(time, off);
}
else {
tobj->timev = timelocalv(&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)
{
@ -1451,6 +1730,13 @@ month_arg(VALUE 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)
{
@ -1460,7 +1746,8 @@ validate_vtm(struct vtm *vtm)
|| (vtm->hour == 24 && (vtm->min > 0 || vtm->sec > 0))
|| vtm->min < 0 || vtm->min > 59
|| vtm->sec < 0 || vtm->sec > 60
|| lt(vtm->subsec, INT2FIX(0)) || ge(vtm->subsec, INT2FIX(1)))
|| lt(vtm->subsec, INT2FIX(0)) || ge(vtm->subsec, INT2FIX(1))
|| (!NIL_P(vtm->utc_offset) && (validate_utc_offset(vtm->utc_offset), 0)))
rb_raise(rb_eArgError, "argument out of range");
}
@ -2201,19 +2488,6 @@ time_dup(VALUE time)
return dup;
}
/*
* call-seq:
* time.localtime => time
*
* Converts <i>time</i> to local time (using the local time zone in
* effect for this process) modifying the receiver.
*
* t = Time.gm(2000, "jan", 1, 20, 15, 1) #=> 2000-01-01 20:15:01 UTC
* t.gmt? #=> true
* t.localtime #=> 2000-01-01 14:15:01 -0600
* t.gmt? #=> false
*/
static VALUE
time_localtime(VALUE time)
{
@ -2238,6 +2512,43 @@ time_localtime(VALUE time)
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
@ -2280,23 +2591,75 @@ time_gmtime(VALUE time)
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 (!gmtimev(tobj->timev, &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).
*
* t = Time.gm(2000,1,1,20,15,1) #=> 2000-01-01 20:15:01 UTC
* t.gmt? #=> true
* 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.gmt? #=> false
* 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(VALUE time)
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));
}
@ -2325,6 +2688,7 @@ 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);
}
@ -2828,6 +3192,8 @@ time_zone(VALUE time)
if (TIME_UTC_P(tobj)) {
return rb_str_new2("UTC");
}
if (tobj->vtm.zone == NULL)
return Qnil;
return rb_str_new2(tobj->vtm.zone);
}
@ -3321,13 +3687,13 @@ Init_Time(void)
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, 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, 0);
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, 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);