36 lines
679 B
Go
36 lines
679 B
Go
package opt
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import "fmt"
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type Option interface {
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Name() string
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ShortName() string
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Description() string
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Parse(raw string) error
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RequiresVal() bool
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}
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func Names(o Option) string {
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names := ""
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if o.ShortName() != "" {
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names += fmt.Sprintf("-%s, ", o.ShortName())
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}
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names += fmt.Sprintf("--%s", o.Name())
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return names
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}
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func HelpLine(o Option, paddedWidth int) string {
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argNames := ""
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if o.ShortName() != "" {
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argNames += fmt.Sprintf("-%s, ", o.ShortName())
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}
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argNames += fmt.Sprintf("--%s", o.Name())
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spaceSize := paddedWidth - len(argNames)
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if spaceSize > 0 {
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argNames += fmt.Sprintf("%*s", spaceSize, "")
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}
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return argNames + " " + o.Description()
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}
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