subcmd is a minimalistic library that enables easy sub commands with the standard flag library.
Define a root command object using the Root function.
This object exposes the standard library's flag.FlagSet API, which enables adding flags in the
standard way.
Additionally, this object exposes the SubCommand method, which returns another command object.
This objects also exposing the same API, enabling definition of flags and nested sub commands.
The root object then have to be called with the Parse or ParseArgs methods, similiraly to
the flag.Parse call.
The usage is automatically configured to show both sub commands and flags.
The subcmd library is opinionated about positional arguments: it enforces their definition
and parsing. The user can define for each sub command if and how many positional arguments it
accepts. Their usage is similar to the flag values usage.
See ./example/main.go.
Suppose cmd has a flag -flag, and a subcommand sub. In the current implementation:
Calling cmd sub -flag won't work as the flag is set after the sub command, while
cmd -flag sub will work perfectly fine. Each flag needs to be used in the scope of its command.
Created by goreadme