111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
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/*
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* Date/time.
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*/
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#include "third_party/duktape/duk_internal.h"
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DUK_INTERNAL duk_double_t duk_time_get_ecmascript_time(duk_hthread *thr) {
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/* ECMAScript time, with millisecond fractions. Exposed via
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* duk_get_now() for example.
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*/
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DUK_UNREF(thr);
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return (duk_double_t) DUK_USE_DATE_GET_NOW(thr);
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}
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DUK_INTERNAL duk_double_t duk_time_get_ecmascript_time_nofrac(duk_hthread *thr) {
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/* ECMAScript time without millisecond fractions. Exposed via
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* the Date built-in which doesn't allow fractions.
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*/
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DUK_UNREF(thr);
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return (duk_double_t) DUK_FLOOR(DUK_USE_DATE_GET_NOW(thr));
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}
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DUK_INTERNAL duk_double_t duk_time_get_monotonic_time(duk_hthread *thr) {
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DUK_UNREF(thr);
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#if defined(DUK_USE_GET_MONOTONIC_TIME)
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return (duk_double_t) DUK_USE_GET_MONOTONIC_TIME(thr);
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#else
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return (duk_double_t) DUK_USE_DATE_GET_NOW(thr);
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#endif
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}
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DUK_EXTERNAL duk_double_t duk_get_now(duk_hthread *thr) {
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DUK_ASSERT_API_ENTRY(thr);
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DUK_UNREF(thr);
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/* This API intentionally allows millisecond fractions. */
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return duk_time_get_ecmascript_time(thr);
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}
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#if 0 /* XXX: worth exposing? */
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DUK_EXTERNAL duk_double_t duk_get_monotonic_time(duk_hthread *thr) {
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DUK_ASSERT_API_ENTRY(thr);
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DUK_UNREF(thr);
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return duk_time_get_monotonic_time(thr);
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}
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#endif
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DUK_EXTERNAL void duk_time_to_components(duk_hthread *thr, duk_double_t timeval, duk_time_components *comp) {
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duk_int_t parts[DUK_DATE_IDX_NUM_PARTS];
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duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS];
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duk_uint_t flags;
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DUK_ASSERT_API_ENTRY(thr);
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DUK_ASSERT(comp != NULL); /* XXX: or check? */
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DUK_UNREF(thr);
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/* Convert as one-based, but change month to zero-based to match the
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* ECMAScript Date built-in behavior 1:1.
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*/
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flags = DUK_DATE_FLAG_ONEBASED | DUK_DATE_FLAG_NAN_TO_ZERO;
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duk_bi_date_timeval_to_parts(timeval, parts, dparts, flags);
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/* XXX: sub-millisecond accuracy for the API */
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DUK_ASSERT(dparts[DUK_DATE_IDX_MONTH] >= 1.0 && dparts[DUK_DATE_IDX_MONTH] <= 12.0);
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comp->year = dparts[DUK_DATE_IDX_YEAR];
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comp->month = dparts[DUK_DATE_IDX_MONTH] - 1.0;
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comp->day = dparts[DUK_DATE_IDX_DAY];
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comp->hours = dparts[DUK_DATE_IDX_HOUR];
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comp->minutes = dparts[DUK_DATE_IDX_MINUTE];
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comp->seconds = dparts[DUK_DATE_IDX_SECOND];
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comp->milliseconds = dparts[DUK_DATE_IDX_MILLISECOND];
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comp->weekday = dparts[DUK_DATE_IDX_WEEKDAY];
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}
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DUK_EXTERNAL duk_double_t duk_components_to_time(duk_hthread *thr, duk_time_components *comp) {
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duk_double_t d;
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duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS];
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duk_uint_t flags;
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DUK_ASSERT_API_ENTRY(thr);
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DUK_ASSERT(comp != NULL); /* XXX: or check? */
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DUK_UNREF(thr);
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/* Match Date constructor behavior (with UTC time). Month is given
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* as zero-based. Day-of-month is given as one-based so normalize
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* it to zero-based as the internal conversion helpers expects all
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* components to be zero-based.
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*/
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flags = 0;
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/* XXX: expensive conversion; use array format in API instead, or unify
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* time provider and time API to use same struct?
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*/
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dparts[DUK_DATE_IDX_YEAR] = comp->year;
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dparts[DUK_DATE_IDX_MONTH] = comp->month;
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dparts[DUK_DATE_IDX_DAY] = comp->day - 1.0;
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dparts[DUK_DATE_IDX_HOUR] = comp->hours;
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dparts[DUK_DATE_IDX_MINUTE] = comp->minutes;
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dparts[DUK_DATE_IDX_SECOND] = comp->seconds;
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dparts[DUK_DATE_IDX_MILLISECOND] = comp->milliseconds;
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dparts[DUK_DATE_IDX_WEEKDAY] = 0; /* ignored */
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d = duk_bi_date_get_timeval_from_dparts(dparts, flags);
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return d;
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}
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