icuSources/i18n/utmscale.c

   1 /*
   2 *******************************************************************************
   3 * Copyright (C) 2004, International Business Machines Corporation and
   4 * others. All Rights Reserved.
   5 *******************************************************************************
   6 */
   7
   8 #include "unicode/utypes.h"
   9
  10 #if !UCONFIG_NO_FORMATTING
  11
  12 #include "unicode/utmscale.h"
  13
  14 #define ticks        INT64_C(1)
  15 #define microseconds (ticks * 10)
  16 #define milliseconds (microseconds * 1000)
  17 #define seconds      (milliseconds * 1000)
  18 #define minutes      (seconds * 60)
  19 #define hours        (minutes * 60)
  20 #define days         (hours * 24)
  21
  22 #define TIME_SCALE_CHECK(scale,status) \
  23     if(scale < 0 || scale >= UDTS_MAX_SCALE) { \
  24         *status = U_ILLEGAL_ARGUMENT_ERROR; \
  25         return 0; \
  26     }
  27
  28 typedef struct
  29 {
  30     int64_t units;
  31     int64_t epochOffset;
  32
  33     int64_t fromMin;
  34     int64_t fromMax;
  35     int64_t toMin;
  36     int64_t toMax;
  37
  38     int64_t epochOffsetP1;
  39     int64_t epochOffsetM1;
  40     int64_t unitsRound;
  41     int64_t minRound;
  42     int64_t maxRound;
  43 } InternalTimeScaleData;
  44
  45 static const InternalTimeScaleData timeScaleTable[] = {
  46   /*    units             epochOffset                     fromMin                        fromMax                            toMin                        toMax                    epochOffsetP1                epochOffsetM1              unitsRound                    minRound                     maxRound          */
  47     {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)},
  48     {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)},
  49     {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)},
  50     {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)},
  51     {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)},
  52     {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)},
  53     {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)},
  54     {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)},
  55     {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)},
  56 };
  57
  58 U_CAPI int64_t U_EXPORT2
  59 utmscale_getTimeScaleValue(UDateTimeScale timeScale, UTimeScaleValue value, UErrorCode *status)
  60 {
  61     const InternalTimeScaleData *internalData;
  62
  63     if (status == NULL || U_FAILURE(*status)) {
  64         return 0;
  65     }
  66
  67     if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
  68         *status = U_ILLEGAL_ARGUMENT_ERROR;
  69         return 0;
  70     }
  71
  72     internalData = &timeScaleTable[timeScale];
  73
  74     switch (value)
  75     {
  76     case UTSV_UNITS_VALUE:
  77         return internalData->units;
  78
  79     case UTSV_EPOCH_OFFSET_VALUE:
  80         return internalData->epochOffset;
  81
  82     case UTSV_FROM_MIN_VALUE:
  83         return internalData->fromMin;
  84
  85     case UTSV_FROM_MAX_VALUE:
  86         return internalData->fromMax;
  87
  88     case UTSV_TO_MIN_VALUE:
  89         return internalData->toMin;
  90
  91     case UTSV_TO_MAX_VALUE:
  92         return internalData->toMax;
  93
  94     case UTSV_EPOCH_OFFSET_PLUS_1_VALUE:
  95         return internalData->epochOffsetP1;
  96
  97     case UTSV_EPOCH_OFFSET_MINUS_1_VALUE:
  98         return internalData->epochOffsetM1;
  99
 100     case UTSV_UNITS_ROUND_VALUE:
 101         return internalData->unitsRound;
 102
 103     case UTSV_MIN_ROUND_VALUE:
 104         return internalData->minRound;
 105
 106     case UTSV_MAX_ROUND_VALUE:
 107         return internalData->maxRound;
 108
 109     default:
 110         *status = U_ILLEGAL_ARGUMENT_ERROR;
 111         return 0;
 112     }
 113 }
 114
 115 U_CAPI int64_t U_EXPORT2
 116 utmscale_fromInt64(int64_t otherTime, UDateTimeScale timeScale, UErrorCode *status)
 117 {
 118     const InternalTimeScaleData *data;
 119
 120     if (status == NULL || U_FAILURE(*status)) {
 121         return 0;
 122     }
 123
 124     if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
 125         *status = U_ILLEGAL_ARGUMENT_ERROR;
 126         return 0;
 127     }
 128
 129     data = &timeScaleTable[timeScale];
 130
 131     if (otherTime < data->fromMin || otherTime > data->fromMax) {
 132         *status = U_ILLEGAL_ARGUMENT_ERROR;
 133         return 0;
 134     }
 135
 136     return (otherTime + data->epochOffset) * data->units;
 137 }
 138
 139 U_CAPI int64_t U_EXPORT2
 140 utmscale_toInt64(int64_t universalTime, UDateTimeScale timeScale, UErrorCode *status)
 141 {
 142     const InternalTimeScaleData *data;
 143
 144     if (status == NULL || U_FAILURE(*status)) {
 145         return 0;
 146     }
 147
 148     if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
 149         *status = U_ILLEGAL_ARGUMENT_ERROR;
 150         return 0;
 151     }
 152
 153     data = &timeScaleTable[timeScale];
 154
 155     if (universalTime < data->toMin || universalTime > data->toMax) {
 156         *status = U_ILLEGAL_ARGUMENT_ERROR;
 157         return 0;
 158     }
 159
 160     if (universalTime < 0) {
 161         if (universalTime < data->minRound) {
 162             return (universalTime + data->unitsRound) / data->units - data->epochOffsetP1;
 163         }
 164
 165         return (universalTime - data->unitsRound) / data->units - data->epochOffset;
 166     }
 167
 168     if (universalTime > data->maxRound) {
 169         return (universalTime - data->unitsRound) / data->units - data->epochOffsetM1;
 170     }
 171
 172     return (universalTime + data->unitsRound) / data->units - data->epochOffset;
 173 }
 174
 175 #endif /* #if !UCONFIG_NO_FORMATTING */