/
time.go
74 lines (62 loc) · 1.23 KB
/
time.go
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package tradier
import (
"strconv"
"time"
)
// DateTime wraps time.Time and adds flexible implementations for unmarshaling
// JSON in the different forms it appears in the Tradier API.
type DateTime struct {
time.Time
}
func (d *DateTime) Set(s string) error {
if s == "null" {
return nil
}
t, err := time.Parse(time.RFC3339, s)
if err == nil {
*d = DateTime{t}
return nil
}
// Date and time.
t, err = time.Parse("2006-01-02T15:04:05", s)
if err == nil {
*d = DateTime{t}
return nil
}
// Just the date
t, err = time.Parse("2006-01-02", s)
if err == nil {
*d = DateTime{t}
return nil
}
// Just the hour
t, err = time.Parse("15:04", s)
if err == nil {
*d = DateTime{t}
return nil
}
// Milliseconds since the Unix epoch.
t, err = ParseTimeMs(s)
if err == nil {
*d = DateTime{t}
return nil
}
return err
}
func (d *DateTime) UnmarshalJSON(b []byte) error {
if b[0] == '"' && b[len(b)-1] == '"' {
b = b[1 : len(b)-1]
}
s := string(b)
return d.Set(s)
}
func ParseTimeMs(tsMs string) (time.Time, error) {
msecs, err := strconv.ParseInt(tsMs, 10, 64)
if err != nil {
return time.Time{}, err
}
secs := msecs / 1000
nsecs := 1000000 * (msecs % 1000)
t := time.Unix(secs, nsecs)
return t, nil
}