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duration.go
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duration.go
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package rig
import (
"flag"
"time"
"github.com/Pimmr/rig/validators"
)
type durationValidators struct {
*durationValue
validators []validators.Duration
}
func (v durationValidators) Set(s string) error {
err := v.durationValue.Set(s)
if err != nil {
return err
}
for _, validator := range v.validators {
err = validator(time.Duration(*v.durationValue))
if err != nil {
return err
}
}
return nil
}
func (v durationValidators) New(i interface{}) flag.Value {
return durationValidators{
durationValue: (*durationValue)(i.(*time.Duration)),
validators: v.validators,
}
}
func (v durationValidators) IsNil() bool {
return v.durationValue == nil
}
type durationValue time.Duration
func (d durationValue) String() string {
return time.Duration(d).String()
}
func (d *durationValue) Set(s string) error {
v, err := time.ParseDuration(s)
*d = durationValue(v)
return err
}
// Duration creates a flag for a time.Duration variable.
func Duration(v *time.Duration, flag, env, usage string, validators ...validators.Duration) *Flag {
return &Flag{
Value: durationValidators{
durationValue: (*durationValue)(v),
validators: validators,
},
Name: flag,
Env: env,
Usage: usage,
TypeHint: "duration",
}
}
// DurationGenerator is the default time.Duration generator, to be used with Repeatable for time.Duration slices.
func DurationGenerator() Generator {
return func() flag.Value {
return new(durationValue)
}
}