tagflag

Package tagflag uses reflection to derive flags and positional arguments to a program, and parses and sets them from a slice of arguments. For example: Supported tags include: MarshalArgs is called on fields that implement ArgsMarshaler. A number of arguments matching the arity of the field are passed if possible. Slices will collect successive values, within the provided arity constraints. A few helpful types have builtin marshallers, for example Bytes, *net.TCPAddr, *url.URL, time.Duration, and net.IP. Flags are strictly passed with the form -K or -K=V. No space between -K and the value is allowed. This allows positional arguments to be mixed in with flags, and prevents any confusion due to some flags occasionally not taking values. A `--` will terminate flag parsing, and treat all further arguments as positional. A builtin help and usage printer are provided, and activated when passing -h or -help. Flag and positional argument names are automatically munged to fit the standard scheme within tagflag.
6 versions
Latest release: almost 2 years ago
196 dependent packages

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