40 lines
981 B
Go
40 lines
981 B
Go
package flags
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import (
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"fmt"
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goflags "github.com/jessevdk/go-flags"
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"os"
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)
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var PrintedHelpErr = goflags.ErrHelp
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type Options struct {
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Foreground bool `short:"f" long:"foreground" description:"Run in the foreground"`
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ConfigFile string `short:"c" long:"config" description:"Configuration file location" value-name:"FILE"`
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PidFile string `short:"p" long:"pid" description:"PID file location"`
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Positional struct {
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InterfaceName string `required:"yes" positional-arg-name:"INTERFACE-NAME" description:"Interface name"`
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} `positional-args:"yes"`
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}
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func ParseFlags() (*Options, error) {
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o := new(Options)
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parser := goflags.NewParser(o, goflags.Default)
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_, err := parser.Parse()
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if err != nil {
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parser.WriteHelp(os.Stdout)
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return nil, err
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}
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if o.ConfigFile == "" {
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o.ConfigFile = fmt.Sprintf(DefaultConfigFile, o.Positional.InterfaceName)
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}
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if o.PidFile == "" {
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o.PidFile = fmt.Sprintf(DefaultPidFile, o.Positional.InterfaceName)
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}
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return o, nil
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}
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