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time_parse.go
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time_parse.go
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package humanlog
import (
"math"
"time"
)
var formats = []string{
"2006-01-02 15:04:05.999999999 -0700 MST",
time.RFC3339,
time.RFC3339Nano,
time.RFC822,
time.RFC822Z,
time.RFC850,
time.RFC1123,
time.RFC1123Z,
time.UnixDate,
time.RubyDate,
time.ANSIC,
time.Kitchen,
time.Stamp,
time.StampMilli,
time.StampMicro,
time.StampNano,
}
func parseTimeFloat64(value float64) (time.Time, bool) {
if value/math.Pow10(15) > 1 { // Nanoseconds
secs := int64(math.Trunc(value / math.Pow10(6)))
nsecs := int64(math.Mod(value, math.Pow10(6)))
return time.Unix(secs, nsecs), true
} else if value/math.Pow10(12) > 1 { // Milliseconds
secs := int64(math.Trunc(value / math.Pow10(3)))
nsecs := int64(math.Mod(value, math.Pow10(3))) * int64(math.Pow10(3))
return time.Unix(secs, nsecs), true
} else {
return time.Unix(int64(value), 0), true
}
}
// tries to parse time using a couple of formats before giving up
func tryParseTime(value interface{}) (time.Time, bool) {
var t time.Time
var err error
switch value.(type) {
case string:
for _, layout := range formats {
t, err = time.Parse(layout, value.(string))
if err == nil {
return t, true
}
}
case float32:
return parseTimeFloat64(float64(value.(float32)))
case float64:
return parseTimeFloat64(value.(float64))
case int:
return parseTimeFloat64(float64(value.(int)))
case int32:
return parseTimeFloat64(float64(value.(int32)))
case int64:
return parseTimeFloat64(float64(value.(int64)))
}
return t, false
}