113 lines
6.1 KiB
C
113 lines
6.1 KiB
C
/*
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*******************************************************************************
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* Copyright (C) 2004-2006, International Business Machines Corporation and
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* others. All Rights Reserved.
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*******************************************************************************
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "unicode/utmscale.h"
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#define ticks INT64_C(1)
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#define microseconds (ticks * 10)
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#define milliseconds (microseconds * 1000)
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#define seconds (milliseconds * 1000)
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#define minutes (seconds * 60)
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#define hours (minutes * 60)
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#define days (hours * 24)
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static const int64_t timeScaleTable[UDTS_MAX_SCALE][UTSV_MAX_SCALE_VALUE] = {
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/* units epochOffset fromMin fromMax toMin toMax epochOffsetP1 epochOffsetM1 unitsRound minRound maxRound */
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{milliseconds, INT64_C(62135769600000), INT64_C(-984472973285477), INT64_C(860201434085477), INT64_C(-9223372036854774999), INT64_C(9223372036854774999), INT64_C(62135769600001), INT64_C(62135769599999), INT64_C(5000), INT64_C(-9223372036854770808), INT64_C(9223372036854770807)},
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{seconds, INT64_C(62135769600), INT64_C(-984472973285), INT64_C(860201434085), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(62135769601), INT64_C(62135769599), INT64_C(5000000), INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
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{milliseconds, INT64_C(62135769600000), INT64_C(-984472973285477), INT64_C(860201434085477), INT64_C(-9223372036854774999), INT64_C(9223372036854774999), INT64_C(62135769600001), INT64_C(62135769599999), INT64_C(5000), INT64_C(-9223372036854770808), INT64_C(9223372036854770807)},
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{ticks, INT64_C(504912960000000000), U_INT64_MIN, INT64_C(8718459076854775807), INT64_C(-8718459076854775808), INT64_C(9223372036854775807), INT64_C(504912960000000000), INT64_C(504912960000000000), INT64_C(0), U_INT64_MIN, INT64_C(9223372036854775807)},
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{ticks, INT64_C(0), U_INT64_MIN, INT64_C(9223372036854775807), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(0), INT64_C(0), INT64_C(0), U_INT64_MIN, INT64_C(9223372036854775807)},
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{seconds, INT64_C(60052924800), INT64_C(-982390128485), INT64_C(862284278885), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(60052924801), INT64_C(60052924799), INT64_C(5000000), INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
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{seconds, INT64_C(63114076800), INT64_C(-985451280485), INT64_C(859223126885), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(63114076801), INT64_C(63114076799), INT64_C(5000000), INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
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{days, INT64_C(693596), INT64_C(-11368795), INT64_C(9981603), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(693597), INT64_C(693595), INT64_C(432000000000), INT64_C(-9223371604854775808), INT64_C(9223371604854775807)},
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{days, INT64_C(693596), INT64_C(-11368795), INT64_C(9981603), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(693597), INT64_C(693595), INT64_C(432000000000), INT64_C(-9223371604854775808), INT64_C(9223371604854775807)},
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};
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U_CAPI int64_t U_EXPORT2
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utmscale_getTimeScaleValue(UDateTimeScale timeScale, UTimeScaleValue value, UErrorCode *status)
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{
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if (status == NULL || U_FAILURE(*status)) {
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return 0;
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}
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if (timeScale < UDTS_JAVA_TIME || UDTS_MAX_SCALE <= timeScale
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|| value < UTSV_UNITS_VALUE || UTSV_MAX_SCALE_VALUE <= value)
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{
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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return timeScaleTable[timeScale][value];
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}
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U_CAPI int64_t U_EXPORT2
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utmscale_fromInt64(int64_t otherTime, UDateTimeScale timeScale, UErrorCode *status)
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{
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const int64_t *data;
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if (status == NULL || U_FAILURE(*status)) {
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return 0;
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}
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if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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data = (const int64_t *)(&timeScaleTable[timeScale]);
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if (otherTime < data[UTSV_FROM_MIN_VALUE] || otherTime > data[UTSV_FROM_MAX_VALUE]) {
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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return (otherTime + data[UTSV_EPOCH_OFFSET_VALUE]) * data[UTSV_UNITS_VALUE];
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}
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U_CAPI int64_t U_EXPORT2
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utmscale_toInt64(int64_t universalTime, UDateTimeScale timeScale, UErrorCode *status)
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{
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const int64_t *data;
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if (status == NULL || U_FAILURE(*status)) {
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return 0;
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}
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if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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data = (const int64_t *)(&timeScaleTable[timeScale]);
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if (universalTime < data[UTSV_TO_MIN_VALUE] || universalTime > data[UTSV_TO_MAX_VALUE]) {
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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if (universalTime < 0) {
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if (universalTime < data[UTSV_MIN_ROUND_VALUE]) {
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return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_PLUS_1_VALUE];
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}
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return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE];
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}
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if (universalTime > data[UTSV_MAX_ROUND_VALUE]) {
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return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_MINUS_1_VALUE];
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}
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return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE];
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}
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#endif /* #if !UCONFIG_NO_FORMATTING */
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