urfave-cli/flag.go

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package cli
import "fmt"
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import "flag"
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type Flag interface {
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fmt.Stringer
Apply(*flag.FlagSet)
}
func flagSet(flags []Flag) *flag.FlagSet {
set := flag.NewFlagSet("cli", flag.ExitOnError)
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for _, f := range flags {
f.Apply(set)
}
return set
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}
type BoolFlag struct {
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Name string
Usage string
}
func (f BoolFlag) String() string {
return fmt.Sprintf("--%v\t%v", f.Name, f.Usage)
}
func (f BoolFlag) Apply(set *flag.FlagSet) {
set.Bool(f.Name, false, f.Usage)
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}
type StringFlag struct {
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Name string
Value string
Usage string
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}
func (f StringFlag) String() string {
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return fmt.Sprintf("--%v '%v'\t%v", f.Name, f.Value, f.Usage)
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}
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func (f StringFlag) Apply(set *flag.FlagSet) {
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set.String(f.Name, f.Value, f.Usage)
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}
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type IntFlag struct {
Name string
Value int
Usage string
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}
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func (f IntFlag) String() string {
return fmt.Sprintf("--%v '%v'\t%v", f.Name, f.Value, f.Usage)
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}
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func (f IntFlag) Apply(set *flag.FlagSet) {
set.Int(f.Name, f.Value, f.Usage)
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}