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duration.go (3317B)

      1 package pflag
      2 
      3 import (
      4 	"time"
      5 )
      6 
      7 // -- time.Duration Value
      8 type durationValue time.Duration
      9 
     10 func newDurationValue(val time.Duration, p *time.Duration) *durationValue {
     11 	*p = val
     12 	return (*durationValue)(p)
     13 }
     14 
     15 func (d *durationValue) Set(s string) error {
     16 	v, err := time.ParseDuration(s)
     17 	*d = durationValue(v)
     18 	return err
     19 }
     20 
     21 func (d *durationValue) Type() string {
     22 	return "duration"
     23 }
     24 
     25 func (d *durationValue) String() string { return (*time.Duration)(d).String() }
     26 
     27 func durationConv(sval string) (interface{}, error) {
     28 	return time.ParseDuration(sval)
     29 }
     30 
     31 // GetDuration return the duration value of a flag with the given name
     32 func (f *FlagSet) GetDuration(name string) (time.Duration, error) {
     33 	val, err := f.getFlagType(name, "duration", durationConv)
     34 	if err != nil {
     35 		return 0, err
     36 	}
     37 	return val.(time.Duration), nil
     38 }
     39 
     40 // DurationVar defines a time.Duration flag with specified name, default value, and usage string.
     41 // The argument p points to a time.Duration variable in which to store the value of the flag.
     42 func (f *FlagSet) DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
     43 	f.VarP(newDurationValue(value, p), name, "", usage)
     44 }
     45 
     46 // DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash.
     47 func (f *FlagSet) DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) {
     48 	f.VarP(newDurationValue(value, p), name, shorthand, usage)
     49 }
     50 
     51 // DurationVar defines a time.Duration flag with specified name, default value, and usage string.
     52 // The argument p points to a time.Duration variable in which to store the value of the flag.
     53 func DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
     54 	CommandLine.VarP(newDurationValue(value, p), name, "", usage)
     55 }
     56 
     57 // DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash.
     58 func DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) {
     59 	CommandLine.VarP(newDurationValue(value, p), name, shorthand, usage)
     60 }
     61 
     62 // Duration defines a time.Duration flag with specified name, default value, and usage string.
     63 // The return value is the address of a time.Duration variable that stores the value of the flag.
     64 func (f *FlagSet) Duration(name string, value time.Duration, usage string) *time.Duration {
     65 	p := new(time.Duration)
     66 	f.DurationVarP(p, name, "", value, usage)
     67 	return p
     68 }
     69 
     70 // DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash.
     71 func (f *FlagSet) DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration {
     72 	p := new(time.Duration)
     73 	f.DurationVarP(p, name, shorthand, value, usage)
     74 	return p
     75 }
     76 
     77 // Duration defines a time.Duration flag with specified name, default value, and usage string.
     78 // The return value is the address of a time.Duration variable that stores the value of the flag.
     79 func Duration(name string, value time.Duration, usage string) *time.Duration {
     80 	return CommandLine.DurationP(name, "", value, usage)
     81 }
     82 
     83 // DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash.
     84 func DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration {
     85 	return CommandLine.DurationP(name, shorthand, value, usage)
     86 }