85 lines
3.0 KiB
Go
85 lines
3.0 KiB
Go
package pflag
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import "strconv"
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// -- float64 Value
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type float64Value float64
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func newFloat64Value(val float64, p *float64) *float64Value {
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*p = val
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return (*float64Value)(p)
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}
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func (f *float64Value) Set(s string) error {
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v, err := strconv.ParseFloat(s, 64)
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*f = float64Value(v)
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return err
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}
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func (f *float64Value) Type() string {
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return "float64"
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}
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func (f *float64Value) String() string { return strconv.FormatFloat(float64(*f), 'g', -1, 64) }
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func float64Conv(sval string) (interface{}, error) {
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return strconv.ParseFloat(sval, 64)
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}
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// GetFloat64 return the float64 value of a flag with the given name
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func (f *FlagSet) GetFloat64(name string) (float64, error) {
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val, err := f.getFlagType(name, "float64", float64Conv)
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if err != nil {
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return 0, err
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}
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return val.(float64), nil
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}
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// Float64Var defines a float64 flag with specified name, default value, and usage string.
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// The argument p points to a float64 variable in which to store the value of the flag.
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func (f *FlagSet) Float64Var(p *float64, name string, value float64, usage string) {
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f.VarP(newFloat64Value(value, p), name, "", usage)
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}
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// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) Float64VarP(p *float64, name, shorthand string, value float64, usage string) {
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f.VarP(newFloat64Value(value, p), name, shorthand, usage)
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}
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// Float64Var defines a float64 flag with specified name, default value, and usage string.
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// The argument p points to a float64 variable in which to store the value of the flag.
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func Float64Var(p *float64, name string, value float64, usage string) {
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CommandLine.VarP(newFloat64Value(value, p), name, "", usage)
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}
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// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash.
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func Float64VarP(p *float64, name, shorthand string, value float64, usage string) {
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CommandLine.VarP(newFloat64Value(value, p), name, shorthand, usage)
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}
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// Float64 defines a float64 flag with specified name, default value, and usage string.
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// The return value is the address of a float64 variable that stores the value of the flag.
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func (f *FlagSet) Float64(name string, value float64, usage string) *float64 {
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p := new(float64)
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f.Float64VarP(p, name, "", value, usage)
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return p
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}
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// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) Float64P(name, shorthand string, value float64, usage string) *float64 {
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p := new(float64)
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f.Float64VarP(p, name, shorthand, value, usage)
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return p
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}
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// Float64 defines a float64 flag with specified name, default value, and usage string.
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// The return value is the address of a float64 variable that stores the value of the flag.
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func Float64(name string, value float64, usage string) *float64 {
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return CommandLine.Float64P(name, "", value, usage)
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}
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// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash.
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func Float64P(name, shorthand string, value float64, usage string) *float64 {
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return CommandLine.Float64P(name, shorthand, value, usage)
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}
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