ref: 39dd0a36bae056660c36deefdf6faccb898d98a4
dir: /jsdate.c/
#include "jsi.h" #include "jsvalue.h" #include "jsbuiltin.h" #include <time.h> static double Now(void) { time_t now = time(NULL); return mktime(gmtime(&now)) * 1000; } static double LocalTZA(void) { static int once = 1; static double tza = 0; if (once) { time_t now = time(NULL); time_t utc = mktime(gmtime(&now)); time_t loc = mktime(localtime(&now)); tza = (loc - utc) * 1000; once = 0; } return tza; } static double DaylightSavingTA(double t) { return 0; // TODO } /* Helpers from the ECMA 262 specification */ #define HoursPerDay 24.0 #define MinutesPerDay (HoursPerDay * MinutesPerHour) #define MinutesPerHour 60.0 #define SecondsPerDay (MinutesPerDay * SecondsPerMinute) #define SecondsPerHour (MinutesPerHour * SecondsPerMinute) #define SecondsPerMinute 60.0 #define msPerDay (SecondsPerDay * msPerSecond) #define msPerHour (SecondsPerHour * msPerSecond) #define msPerMinute (SecondsPerMinute * msPerSecond) #define msPerSecond 1000.0 static int Day(double t) { return floor(t / msPerDay); } static double TimeWithinDay(double t) { return fmod(t, msPerDay); } static int DaysInYear(int y) { return y % 4 == 0 && (y % 100 || (y % 400 == 0)) ? 366 : 365; } static int DayFromYear(int y) { return 365 * (y - 1970) + floor((y - 1969) / 4.0) - floor((y - 1901) / 100.0) + floor((y - 1601) / 400.0); } static double TimeFromYear(int y) { return DayFromYear(y) * msPerDay; } static int YearFromTime(double t) { int y = floor(t / (msPerDay * 365.2425)) + 1970; double t2 = TimeFromYear(y); if (t2 > t) --y; else if (t2 + msPerDay * DaysInYear(y) <= t) ++y; return y; } static int InLeapYear(int t) { return DaysInYear(YearFromTime(t)) == 366; } static int DayWithinYear(double t) { return Day(t) - DayFromYear(YearFromTime(t)); } static int MonthFromTime(double t) { int day = DayWithinYear(t); int leap = InLeapYear(t); if (day < 31) return 0; if (day < 59 + leap) return 1; if (day < 90 + leap) return 2; if (day < 120 + leap) return 3; if (day < 151 + leap) return 4; if (day < 181 + leap) return 5; if (day < 212 + leap) return 6; if (day < 243 + leap) return 7; if (day < 273 + leap) return 8; if (day < 304 + leap) return 9; if (day < 334 + leap) return 10; return 11; } static int DateFromTime(double t) { int day = DayWithinYear(t); int leap = InLeapYear(t); switch (MonthFromTime(t)) { case 0: return day + 1; case 1: return day - 30; case 2: return day - 58 - leap; case 3: return day - 89 - leap; case 4: return day - 119 - leap; case 5: return day - 150 - leap; case 6: return day - 180 - leap; case 7: return day - 211 - leap; case 8: return day - 242 - leap; case 9: return day - 272 - leap; case 10: return day - 303 - leap; default : return day - 333 - leap; } } static int WeekDay(double t) { return (Day(t) + 4) % 7; } static double LocalTime(double utc) { return utc + LocalTZA() + DaylightSavingTA(utc); } static double UTC(double loc) { return loc - LocalTZA() - DaylightSavingTA(loc - LocalTZA()); } static int HourFromTime(double t) { return fmod(floor(t / msPerHour), HoursPerDay); } static int MinFromTime(double t) { return fmod(floor(t / msPerMinute), MinutesPerHour); } static int SecFromTime(double t) { return fmod(floor(t / msPerSecond), SecondsPerMinute); } static int msFromTime(double t) { return fmod(t, msPerSecond); } static double MakeTime(double hour, double min, double sec, double ms) { return ((hour * MinutesPerHour + min) * SecondsPerMinute + sec) * msPerSecond + ms; } static double MakeDay(double y, double m, double date) { /* * The following array contains the day of year for the first day of * each month, where index 0 is January, and day 0 is January 1. */ static const double firstDayOfMonth[2][12] = { {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334}, {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335} }; double yd, md; y += floor(m / 12); m = fmod(m, 12); if (m < 0) m += 12; yd = floor(TimeFromYear(y) / msPerDay); md = firstDayOfMonth[InLeapYear(y)][(int)m]; return yd + md + date - 1; } static double MakeDate(double day, double time) { return day * msPerDay + time; } static double TimeClip(double t) { if (!isfinite(t)) return NAN; if (abs(t) > 8.64e15) return NAN; return t < 0 ? -floor(-t) : floor(t); } static double parseDate(const char *str) { const char *tz; int y = 1970, m = 0, d = 1, H = 0, M = 0, S = 0, ms = 0; double t; sscanf(str, "%04d-%02d-%02d%*[T ]%02d:%02d:%02d.%d", &y, &m, &d, &H, &M, &S, &ms); t = MakeDate(MakeDay(y, m-1, d), MakeTime(H, M, S, ms)); if ((tz = strstr(str, "UTC")) && !strcmp(tz, "UTC")) return t; if ((tz = strstr(str, "GMT")) && !strcmp(tz, "GMT")) return t; if ((tz = strstr(str, "Z")) && !strcmp(tz, "Z")) return t; return UTC(t); } /* strftime based date formatting */ #define FMT_DATE "%Y-%m-%d" #define FMT_TIME "%H:%M:%S" #define FMT_DATETIME "%Y-%m-%d %H:%M:%S %Z" #define FMT_DATETIME_ISO "%Y-%m-%dT%H:%M:%SZ" static const char *fmtlocal(const char *fmt, double t) { static char buf[64]; time_t tt = t * 0.001; strftime(buf, sizeof buf, fmt, localtime(&tt)); return buf; } static const char *fmtutc(const char *fmt, double t) { static char buf[64]; time_t tt = t * 0.001; strftime(buf, sizeof buf, fmt, gmtime(&tt)); return buf; } /* Date functions */ static double js_todate(js_State *J, int idx) { js_Object *self = js_toobject(J, idx); if (self->type != JS_CDATE) js_typeerror(J, "not a date"); return self->u.number; } static int js_setdate(js_State *J, int idx, double t) { js_Object *self = js_toobject(J, idx); if (self->type != JS_CDATE) js_typeerror(J, "not a date"); self->u.number = TimeClip(t); js_pushnumber(J, self->u.number); return 1; } static int D_parse(js_State *J, int argc) { double t = parseDate(js_tostring(J, 1)); js_pushnumber(J, t); return 1; } static int D_UTC(js_State *J, int argc) { double y, m, d, H, M, S, ms, t; y = js_tonumber(J, 1); if (y < 100) y += 1900; m = js_tonumber(J, 2); d = argc > 2 ? js_tonumber(J, 3) : 1; H = argc > 3 ? js_tonumber(J, 4) : 0; M = argc > 4 ? js_tonumber(J, 5) : 0; S = argc > 5 ? js_tonumber(J, 6) : 0; ms = argc > 6 ? js_tonumber(J, 7) : 0; t = MakeDate(MakeDay(y, m, d), MakeTime(H, M, S, ms)); t = TimeClip(t); js_pushnumber(J, t); return 1; } static int D_now(js_State *J, int argc) { js_pushnumber(J, Now()); return 1; } static int jsB_Date(js_State *J, int argc) { js_pushstring(J, fmtlocal(FMT_DATETIME, Now())); return 1; } static int jsB_new_Date(js_State *J, int argc) { js_Object *obj; js_Value v; double t; if (argc == 0) t = Now(); else if (argc == 1) { v = js_toprimitive(J, 1, JS_HNONE); if (v.type == JS_TSTRING) t = parseDate(v.u.string); else t = TimeClip(jsV_tonumber(J, &v)); } else { double y, m, d, H, M, S, ms; y = js_tonumber(J, 1); if (y < 100) y += 1900; m = js_tonumber(J, 2); d = argc > 2 ? js_tonumber(J, 3) : 1; H = argc > 3 ? js_tonumber(J, 4) : 0; M = argc > 4 ? js_tonumber(J, 5) : 0; S = argc > 5 ? js_tonumber(J, 6) : 0; ms = argc > 6 ? js_tonumber(J, 7) : 0; t = MakeDate(MakeDay(y, m, d), MakeTime(H, M, S, ms)); t = TimeClip(UTC(t)); } obj = jsV_newobject(J, JS_CDATE, J->Date_prototype); obj->u.number = t; js_pushobject(J, obj); return 1; } static int Dp_valueOf(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, t); return 1; } static int Dp_toString(js_State *J, int argc) { double t = js_todate(J, 0); js_pushstring(J, fmtlocal(FMT_DATETIME, t)); return 1; } static int Dp_toDateString(js_State *J, int argc) { double t = js_todate(J, 0); js_pushstring(J, fmtlocal(FMT_DATE, t)); return 1; } static int Dp_toTimeString(js_State *J, int argc) { double t = js_todate(J, 0); js_pushstring(J, fmtlocal(FMT_TIME, t)); return 1; } static int Dp_toUTCString(js_State *J, int argc) { double t = js_todate(J, 0); js_pushstring(J, fmtutc(FMT_DATETIME, t)); return 1; } static int Dp_toISOString(js_State *J, int argc) { double t = js_todate(J, 0); js_pushstring(J, fmtutc(FMT_DATETIME_ISO, t)); return 1; } static int Dp_getFullYear(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, YearFromTime(LocalTime(t))); return 1; } static int Dp_getMonth(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, MonthFromTime(LocalTime(t))); return 1; } static int Dp_getDate(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, DateFromTime(LocalTime(t))); return 1; } static int Dp_getDay(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, WeekDay(LocalTime(t))); return 1; } static int Dp_getHours(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, HourFromTime(LocalTime(t))); return 1; } static int Dp_getMinutes(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, MinFromTime(LocalTime(t))); return 1; } static int Dp_getSeconds(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, SecFromTime(LocalTime(t))); return 1; } static int Dp_getMilliseconds(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, msFromTime(LocalTime(t))); return 1; } static int Dp_getUTCFullYear(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, YearFromTime(t)); return 1; } static int Dp_getUTCMonth(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, MonthFromTime(t)); return 1; } static int Dp_getUTCDate(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, DateFromTime(t)); return 1; } static int Dp_getUTCDay(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, WeekDay(t)); return 1; } static int Dp_getUTCHours(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, HourFromTime(t)); return 1; } static int Dp_getUTCMinutes(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, MinFromTime(t)); return 1; } static int Dp_getUTCSeconds(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, SecFromTime(t)); return 1; } static int Dp_getUTCMilliseconds(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, msFromTime(t)); return 1; } static int Dp_getTimezoneOffset(js_State *J, int argc) { double t = js_todate(J, 0); js_pushnumber(J, (t - LocalTime(t)) / msPerMinute); return 1; } static int Dp_setTime(js_State *J, int argc) { return js_setdate(J, 0, js_tonumber(J, 1)); } static int Dp_setMilliseconds(js_State *J, int argc) { double t = LocalTime(js_todate(J, 0)); double h = HourFromTime(t); double m = MinFromTime(t); double s = SecFromTime(t); double ms = js_tonumber(J, 1); return js_setdate(J, 0, UTC(MakeDate(Day(t), MakeTime(h, m, s, ms)))); } static int Dp_setSeconds(js_State *J, int argc) { double t = LocalTime(js_todate(J, 0)); double h = HourFromTime(t); double m = MinFromTime(t); double s = js_tonumber(J, 1); double ms = argc > 1 ? js_tonumber(J, 2) : msFromTime(t); return js_setdate(J, 0, UTC(MakeDate(Day(t), MakeTime(h, m, s, ms)))); } static int Dp_setMinutes(js_State *J, int argc) { double t = LocalTime(js_todate(J, 0)); double h = HourFromTime(t); double m = js_tonumber(J, 1); double s = argc > 1 ? js_tonumber(J, 2) : SecFromTime(t); double ms = argc > 2 ? js_tonumber(J, 3) : msFromTime(t); return js_setdate(J, 0, UTC(MakeDate(Day(t), MakeTime(h, m, s, ms)))); } static int Dp_setHours(js_State *J, int argc) { double t = LocalTime(js_todate(J, 0)); double h = js_tonumber(J, 1); double m = argc > 1 ? js_tonumber(J, 2) : HourFromTime(t); double s = argc > 2 ? js_tonumber(J, 3) : SecFromTime(t); double ms = argc > 3 ? js_tonumber(J, 4) : msFromTime(t); return js_setdate(J, 0, UTC(MakeDate(Day(t), MakeTime(h, m, s, ms)))); } static int Dp_setDate(js_State *J, int argc) { double t = LocalTime(js_todate(J, 0)); double y = YearFromTime(t); double m = MonthFromTime(t); double d = js_tonumber(J, 1); return js_setdate(J, 0, UTC(MakeDate(MakeDay(y, m, d), TimeWithinDay(t)))); } static int Dp_setMonth(js_State *J, int argc) { double t = LocalTime(js_todate(J, 0)); double y = YearFromTime(t); double m = js_tonumber(J, 1); double d = argc > 1 ? js_tonumber(J, 3) : DateFromTime(t); return js_setdate(J, 0, UTC(MakeDate(MakeDay(y, m, d), TimeWithinDay(t)))); } static int Dp_setFullYear(js_State *J, int argc) { double t = LocalTime(js_todate(J, 0)); double y = js_tonumber(J, 1); double m = argc > 1 ? js_tonumber(J, 2) : MonthFromTime(t); double d = argc > 2 ? js_tonumber(J, 3) : DateFromTime(t); return js_setdate(J, 0, UTC(MakeDate(MakeDay(y, m, d), TimeWithinDay(t)))); } static int Dp_setUTCMilliseconds(js_State *J, int argc) { double t = js_todate(J, 0); double h = HourFromTime(t); double m = MinFromTime(t); double s = SecFromTime(t); double ms = js_tonumber(J, 1); return js_setdate(J, 0, MakeDate(Day(t), MakeTime(h, m, s, ms))); } static int Dp_setUTCSeconds(js_State *J, int argc) { double t = js_todate(J, 0); double h = HourFromTime(t); double m = MinFromTime(t); double s = js_tonumber(J, 1); double ms = argc > 1 ? js_tonumber(J, 2) : msFromTime(t); return js_setdate(J, 0, MakeDate(Day(t), MakeTime(h, m, s, ms))); } static int Dp_setUTCMinutes(js_State *J, int argc) { double t = js_todate(J, 0); double h = HourFromTime(t); double m = js_tonumber(J, 1); double s = argc > 1 ? js_tonumber(J, 2) : SecFromTime(t); double ms = argc > 2 ? js_tonumber(J, 3) : msFromTime(t); return js_setdate(J, 0, MakeDate(Day(t), MakeTime(h, m, s, ms))); } static int Dp_setUTCHours(js_State *J, int argc) { double t = js_todate(J, 0); double h = js_tonumber(J, 1); double m = argc > 1 ? js_tonumber(J, 2) : HourFromTime(t); double s = argc > 2 ? js_tonumber(J, 3) : SecFromTime(t); double ms = argc > 3 ? js_tonumber(J, 4) : msFromTime(t); return js_setdate(J, 0, MakeDate(Day(t), MakeTime(h, m, s, ms))); } static int Dp_setUTCDate(js_State *J, int argc) { double t = js_todate(J, 0); double y = YearFromTime(t); double m = MonthFromTime(t); double d = js_tonumber(J, 1); return js_setdate(J, 0, MakeDate(MakeDay(y, m, d), TimeWithinDay(t))); } static int Dp_setUTCMonth(js_State *J, int argc) { double t = js_todate(J, 0); double y = YearFromTime(t); double m = js_tonumber(J, 1); double d = argc > 1 ? js_tonumber(J, 3) : DateFromTime(t); return js_setdate(J, 0, MakeDate(MakeDay(y, m, d), TimeWithinDay(t))); } static int Dp_setUTCFullYear(js_State *J, int argc) { double t = js_todate(J, 0); double y = js_tonumber(J, 1); double m = argc > 1 ? js_tonumber(J, 2) : MonthFromTime(t); double d = argc > 2 ? js_tonumber(J, 3) : DateFromTime(t); return js_setdate(J, 0, MakeDate(MakeDay(y, m, d), TimeWithinDay(t))); } void jsB_initdate(js_State *J) { J->Date_prototype->u.number = 0; js_pushobject(J, J->Date_prototype); { jsB_propf(J, "valueOf", Dp_valueOf, 0); jsB_propf(J, "toString", Dp_toString, 0); jsB_propf(J, "toDateString", Dp_toDateString, 0); jsB_propf(J, "toTimeString", Dp_toTimeString, 0); jsB_propf(J, "toLocaleString", Dp_toString, 0); jsB_propf(J, "toLocaleDateString", Dp_toDateString, 0); jsB_propf(J, "toLocaleTimeString", Dp_toTimeString, 0); jsB_propf(J, "toUTCString", Dp_toUTCString, 0); jsB_propf(J, "getTime", Dp_valueOf, 0); jsB_propf(J, "getFullYear", Dp_getFullYear, 0); jsB_propf(J, "getUTCFullYear", Dp_getUTCFullYear, 0); jsB_propf(J, "getMonth", Dp_getMonth, 0); jsB_propf(J, "getUTCMonth", Dp_getUTCMonth, 0); jsB_propf(J, "getDate", Dp_getDate, 0); jsB_propf(J, "getUTCDate", Dp_getUTCDate, 0); jsB_propf(J, "getDay", Dp_getDay, 0); jsB_propf(J, "getUTCDay", Dp_getUTCDay, 0); jsB_propf(J, "getHours", Dp_getHours, 0); jsB_propf(J, "getUTCHours", Dp_getUTCHours, 0); jsB_propf(J, "getMinutes", Dp_getMinutes, 0); jsB_propf(J, "getUTCMinutes", Dp_getUTCMinutes, 0); jsB_propf(J, "getSeconds", Dp_getSeconds, 0); jsB_propf(J, "getUTCSeconds", Dp_getUTCSeconds, 0); jsB_propf(J, "getMilliseconds", Dp_getMilliseconds, 0); jsB_propf(J, "getUTCMilliseconds", Dp_getUTCMilliseconds, 0); jsB_propf(J, "getTimezoneOffset", Dp_getTimezoneOffset, 0); jsB_propf(J, "setTime", Dp_setTime, 1); jsB_propf(J, "setMilliseconds", Dp_setMilliseconds, 1); jsB_propf(J, "setUTCMilliseconds", Dp_setUTCMilliseconds, 1); jsB_propf(J, "setSeconds", Dp_setSeconds, 2); jsB_propf(J, "setUTCSeconds", Dp_setUTCSeconds, 2); jsB_propf(J, "setMinutes", Dp_setMinutes, 3); jsB_propf(J, "setUTCMinutes", Dp_setUTCMinutes, 3); jsB_propf(J, "setHours", Dp_setHours, 4); jsB_propf(J, "setUTCHours", Dp_setUTCHours, 4); jsB_propf(J, "setDate", Dp_setDate, 1); jsB_propf(J, "setUTCDate", Dp_setUTCDate, 1); jsB_propf(J, "setMonth", Dp_setMonth, 2); jsB_propf(J, "setUTCMonth", Dp_setUTCMonth, 2); jsB_propf(J, "setFullYear", Dp_setFullYear, 3); jsB_propf(J, "setUTCFullYear", Dp_setUTCFullYear, 3); /* ES5 */ jsB_propf(J, "toISOString", Dp_toISOString, 0); } js_newcconstructor(J, jsB_Date, jsB_new_Date, 1); { jsB_propf(J, "parse", D_parse, 1); jsB_propf(J, "UTC", D_UTC, 7); /* ES5 */ jsB_propf(J, "now", D_now, 0); } js_defglobal(J, "Date", JS_DONTENUM); }