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Code Issues

Add time routines to TimeStamp class

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This commit is contained in:
skidder 2004-11-14 20:49:47 +00:00
parent 8dedd6e4de
commit 8d71db462e
2 changed files with 38 additions and 1 deletions
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34
src/common/classes/timestamp.cpp
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@ -176,6 +176,40 @@ ISC_DATE TimeStamp::encode_date(const struct tm* times)
(153 * month + 2) / 5 + day + 1721119 - 2400001);
}
void TimeStamp::decode_time(
ISC_TIME ntime, int* hours, int* minutes, int* seconds, int* fractions)
{
*hours = ntime / (3600 * ISC_TIME_SECONDS_PRECISION);
ntime %= 3600 * ISC_TIME_SECONDS_PRECISION;
*minutes = ntime / (60 * ISC_TIME_SECONDS_PRECISION);
ntime %= 60 * ISC_TIME_SECONDS_PRECISION;
*seconds = ntime / ISC_TIME_SECONDS_PRECISION;
*fractions = ntime % ISC_TIME_SECONDS_PRECISION;
}
ISC_TIME TimeStamp::round_time(ISC_TIME ntime, int precision)
{
int scale = -ISC_TIME_SECONDS_PRECISION_SCALE - precision;
// for the moment, if greater precision was requested than we can
// provide return what we have.
if (scale < 0) return ntime;
static ISC_TIME pow10table[] =
{1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000};
fb_assert(scale < FB_NELEM(pow10table));
ISC_TIME period = pow10table[scale];
return ntime - (ntime % period);
}
ISC_TIME TimeStamp::encode_time(int hours, int minutes, int seconds, int fractions)
{
return ((hours * 60 + minutes) * 60 + seconds) * ISC_TIME_SECONDS_PRECISION;
}
// Encode timestamp from UNIX datetime structure
void TimeStamp::encode(const struct tm* times) {
mValue.timestamp_date = encode_date(times);

5
src/common/classes/timestamp.h
View File

@ -98,9 +98,12 @@ public:
// Read access to timestamp structure we wrap
const ISC_TIMESTAMP& value() const { return mValue; }
// ISC date/time helper routines. Both functions are signal-safe.
// ISC date/time helper routines. These functions are signal-safe.
static void decode_date(ISC_DATE nday, struct tm* times);
static ISC_DATE encode_date(const struct tm* times);
static void decode_time(ISC_TIME ntime, int* hours, int* minutes, int* seconds, int* fractions);
static ISC_TIME encode_time(int hours, int minutes, int seconds, int fractions);
static ISC_TIME round_time(ISC_TIME ntime, int precision);
private:
ISC_TIMESTAMP mValue;