how to get flag self position in os.Args

[zhujintao]

how to get flag self position in os.Args

[dearchap]

@zhujintao Can you elaborate with an example ?

[zhujintao]

mask password field in command lineps -ef --mysql-dsn=*********

flag := &cli.StringFlag{Name: "mysql-dsn", Usage: "mysql connect dsn, format: user:password@ip:port` `"}
	flag.Action = func(ctx context.Context, cli *cli.Command, s string) error {

		var pos int
		for _, name := range flag.Names() {
			findname := "--" + name + "=" + s
			pos = slices.Index(os.Args, s)
			if pos == -1 {
				pos = slices.Index(os.Args, findname)
			}
		}

                 // mask password args to **** 
                 maskDsnPasswordForIndex(pos)
	  
                 return nil
	}

[dearchap]

@zhujintao No we dont have any mechanism for the feature you want. You could reconstruct the command line args based on all the flags currently set and mask specific stuff

[zhujintao]

ok, can add method to get field position in command line?

[dearchap]

If you'd like to add it I would be happy to review your PR.