88 lines
3.1 KiB
Go
88 lines
3.1 KiB
Go
package pflag
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import "strconv"
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// -- float32 Value
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type float32Value float32
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func newFloat32Value(val float32, p *float32) *float32Value {
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*p = val
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return (*float32Value)(p)
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}
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func (f *float32Value) Set(s string) error {
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v, err := strconv.ParseFloat(s, 32)
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*f = float32Value(v)
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return err
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}
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func (f *float32Value) Type() string {
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return "float32"
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}
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func (f *float32Value) String() string { return strconv.FormatFloat(float64(*f), 'g', -1, 32) }
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func float32Conv(sval string) (interface{}, error) {
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v, err := strconv.ParseFloat(sval, 32)
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if err != nil {
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return 0, err
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}
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return float32(v), nil
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}
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// GetFloat32 return the float32 value of a flag with the given name
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func (f *FlagSet) GetFloat32(name string) (float32, error) {
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val, err := f.getFlagType(name, "float32", float32Conv)
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if err != nil {
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return 0, err
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}
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return val.(float32), nil
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}
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// Float32Var defines a float32 flag with specified name, default value, and usage string.
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// The argument p points to a float32 variable in which to store the value of the flag.
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func (f *FlagSet) Float32Var(p *float32, name string, value float32, usage string) {
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f.VarP(newFloat32Value(value, p), name, "", usage)
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}
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// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
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f.VarP(newFloat32Value(value, p), name, shorthand, usage)
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}
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// Float32Var defines a float32 flag with specified name, default value, and usage string.
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// The argument p points to a float32 variable in which to store the value of the flag.
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func Float32Var(p *float32, name string, value float32, usage string) {
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CommandLine.VarP(newFloat32Value(value, p), name, "", usage)
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}
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// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
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func Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
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CommandLine.VarP(newFloat32Value(value, p), name, shorthand, usage)
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}
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// Float32 defines a float32 flag with specified name, default value, and usage string.
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// The return value is the address of a float32 variable that stores the value of the flag.
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func (f *FlagSet) Float32(name string, value float32, usage string) *float32 {
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p := new(float32)
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f.Float32VarP(p, name, "", value, usage)
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return p
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}
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// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) Float32P(name, shorthand string, value float32, usage string) *float32 {
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p := new(float32)
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f.Float32VarP(p, name, shorthand, value, usage)
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return p
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}
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// Float32 defines a float32 flag with specified name, default value, and usage string.
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// The return value is the address of a float32 variable that stores the value of the flag.
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func Float32(name string, value float32, usage string) *float32 {
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return CommandLine.Float32P(name, "", value, usage)
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}
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// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
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func Float32P(name, shorthand string, value float32, usage string) *float32 {
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return CommandLine.Float32P(name, shorthand, value, usage)
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}
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