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94 lines
3 KiB
Go
94 lines
3 KiB
Go
package pflag
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import "strconv"
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// optional interface to indicate boolean flags that can be
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// supplied without "=value" text
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type boolFlag interface {
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Value
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IsBoolFlag() bool
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}
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// -- bool Value
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type boolValue bool
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func newBoolValue(val bool, p *bool) *boolValue {
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*p = val
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return (*boolValue)(p)
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}
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func (b *boolValue) Set(s string) error {
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v, err := strconv.ParseBool(s)
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*b = boolValue(v)
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return err
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}
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func (b *boolValue) Type() string {
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return "bool"
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}
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func (b *boolValue) String() string { return strconv.FormatBool(bool(*b)) }
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func (b *boolValue) IsBoolFlag() bool { return true }
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func boolConv(sval string) (interface{}, error) {
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return strconv.ParseBool(sval)
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}
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// GetBool return the bool value of a flag with the given name
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func (f *FlagSet) GetBool(name string) (bool, error) {
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val, err := f.getFlagType(name, "bool", boolConv)
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if err != nil {
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return false, err
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}
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return val.(bool), nil
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}
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// BoolVar defines a bool flag with specified name, default value, and usage string.
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// The argument p points to a bool variable in which to store the value of the flag.
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func (f *FlagSet) BoolVar(p *bool, name string, value bool, usage string) {
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f.BoolVarP(p, name, "", value, usage)
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}
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// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) BoolVarP(p *bool, name, shorthand string, value bool, usage string) {
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flag := f.VarPF(newBoolValue(value, p), name, shorthand, usage)
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flag.NoOptDefVal = "true"
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}
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// BoolVar defines a bool flag with specified name, default value, and usage string.
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// The argument p points to a bool variable in which to store the value of the flag.
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func BoolVar(p *bool, name string, value bool, usage string) {
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BoolVarP(p, name, "", value, usage)
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}
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// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash.
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func BoolVarP(p *bool, name, shorthand string, value bool, usage string) {
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flag := CommandLine.VarPF(newBoolValue(value, p), name, shorthand, usage)
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flag.NoOptDefVal = "true"
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}
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// Bool defines a bool flag with specified name, default value, and usage string.
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// The return value is the address of a bool variable that stores the value of the flag.
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func (f *FlagSet) Bool(name string, value bool, usage string) *bool {
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return f.BoolP(name, "", value, usage)
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}
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// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) BoolP(name, shorthand string, value bool, usage string) *bool {
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p := new(bool)
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f.BoolVarP(p, name, shorthand, value, usage)
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return p
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}
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// Bool defines a bool flag with specified name, default value, and usage string.
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// The return value is the address of a bool variable that stores the value of the flag.
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func Bool(name string, value bool, usage string) *bool {
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return BoolP(name, "", value, usage)
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}
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// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash.
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func BoolP(name, shorthand string, value bool, usage string) *bool {
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b := CommandLine.BoolP(name, shorthand, value, usage)
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return b
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}
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