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package pflag
import (
"fmt"
"strings"
"time"
)
// -- durationSlice Value
type durationSliceValue struct {
value *[]time.Duration
changed bool
}
func newDurationSliceValue(val []time.Duration, p *[]time.Duration) *durationSliceValue {
dsv := new(durationSliceValue)
dsv.value = p
*dsv.value = val
return dsv
}
func (s *durationSliceValue) Set(val string) error {
ss := strings.Split(val, ",")
out := make([]time.Duration, len(ss))
for i, d := range ss {
var err error
out[i], err = time.ParseDuration(d)
if err != nil {
return err
}
}
if !s.changed {
*s.value = out
} else {
*s.value = append(*s.value, out...)
}
s.changed = true
return nil
}
func (s *durationSliceValue) Type() string {
return "durationSlice"
}
func (s *durationSliceValue) String() string {
out := make([]string, len(*s.value))
for i, d := range *s.value {
out[i] = fmt.Sprintf("%s", d)
}
return "[" + strings.Join(out, ",") + "]"
}
func durationSliceConv(val string) (interface{}, error) {
val = strings.Trim(val, "[]")
// Empty string would cause a slice with one (empty) entry
if len(val) == 0 {
return []time.Duration{}, nil
}
ss := strings.Split(val, ",")
out := make([]time.Duration, len(ss))
for i, d := range ss {
var err error
out[i], err = time.ParseDuration(d)
if err != nil {
return nil, err
}
}
return out, nil
}
// GetDurationSlice returns the []time.Duration value of a flag with the given name
func (f *FlagSet) GetDurationSlice(name string) ([]time.Duration, error) {
val, err := f.getFlagType(name, "durationSlice", durationSliceConv)
if err != nil {
return []time.Duration{}, err
}
return val.([]time.Duration), nil
}
// DurationSliceVar defines a durationSlice flag with specified name, default value, and usage string.
// The argument p points to a []time.Duration variable in which to store the value of the flag.
func (f *FlagSet) DurationSliceVar(p *[]time.Duration, name string, value []time.Duration, usage string) {
f.VarP(newDurationSliceValue(value, p), name, "", usage)
}
// DurationSliceVarP is like DurationSliceVar, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) DurationSliceVarP(p *[]time.Duration, name, shorthand string, value []time.Duration, usage string) {
f.VarP(newDurationSliceValue(value, p), name, shorthand, usage)
}
// DurationSliceVar defines a duration[] flag with specified name, default value, and usage string.
// The argument p points to a duration[] variable in which to store the value of the flag.
func DurationSliceVar(p *[]time.Duration, name string, value []time.Duration, usage string) {
CommandLine.VarP(newDurationSliceValue(value, p), name, "", usage)
}
// DurationSliceVarP is like DurationSliceVar, but accepts a shorthand letter that can be used after a single dash.
func DurationSliceVarP(p *[]time.Duration, name, shorthand string, value []time.Duration, usage string) {
CommandLine.VarP(newDurationSliceValue(value, p), name, shorthand, usage)
}
// DurationSlice defines a []time.Duration flag with specified name, default value, and usage string.
// The return value is the address of a []time.Duration variable that stores the value of the flag.
func (f *FlagSet) DurationSlice(name string, value []time.Duration, usage string) *[]time.Duration {
p := []time.Duration{}
f.DurationSliceVarP(&p, name, "", value, usage)
return &p
}
// DurationSliceP is like DurationSlice, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) DurationSliceP(name, shorthand string, value []time.Duration, usage string) *[]time.Duration {
p := []time.Duration{}
f.DurationSliceVarP(&p, name, shorthand, value, usage)
return &p
}
// DurationSlice defines a []time.Duration flag with specified name, default value, and usage string.
// The return value is the address of a []time.Duration variable that stores the value of the flag.
func DurationSlice(name string, value []time.Duration, usage string) *[]time.Duration {
return CommandLine.DurationSliceP(name, "", value, usage)
}
// DurationSliceP is like DurationSlice, but accepts a shorthand letter that can be used after a single dash.
func DurationSliceP(name, shorthand string, value []time.Duration, usage string) *[]time.Duration {
return CommandLine.DurationSliceP(name, shorthand, value, usage)
}
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