forked from cortexproject/cortex
/
time.go
60 lines (49 loc) · 1.02 KB
/
time.go
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package flagext
import (
"fmt"
"time"
)
// Time usable as flag or in YAML config.
type Time time.Time
// String implements flag.Value
func (t Time) String() string {
if time.Time(t).IsZero() {
return "0"
}
return time.Time(t).Format(time.RFC3339)
}
// Set implements flag.Value
func (t *Time) Set(s string) error {
if s == "0" {
*t = Time(time.Time{})
return nil
}
p, err := time.Parse("2006-01-02", s)
if err == nil {
*t = Time(p)
return nil
}
p, err = time.Parse("2006-01-02T15:04", s)
if err == nil {
*t = Time(p)
return nil
}
p, err = time.Parse("2006-01-02T15:04:05Z07:00", s)
if err == nil {
*t = Time(p)
return nil
}
return fmt.Errorf("failed to parse time: %q", s)
}
// UnmarshalYAML implements yaml.Unmarshaler.
func (t *Time) UnmarshalYAML(unmarshal func(interface{}) error) error {
var s string
if err := unmarshal(&s); err != nil {
return err
}
return t.Set(s)
}
// MarshalYAML implements yaml.Marshaler.
func (t Time) MarshalYAML() (interface{}, error) {
return t.String(), nil
}