glint

Gleam command line argument parsing with basic flag support.

Installation

If available on Hex this package can be added to your Gleam project.

gleam add glint

Usage

You can import glint as a dependency and use it as follows:

import gleam/io
import gleam/map
import gleam/erlang.{start_arguments}
import glint.{CommandInput}
import glint/flag

pub fn main() {
  let hello_world = fn(input: CommandInput) {
    assert Ok(flag.BoolFlag(caps)) = map.get(input.flags, "caps")

    case caps {
      True -> io.println("HELLO, WORLD!")
      False -> io.println("Hello, World!")
    }
  }

  glint.new()
  |> glint.add_command([], hello_world, [flag.string("caps", False)])
  |> glint.run(start_arguments())
}

Run it with either of:

• gleam run which will print Hello, World!
• gleam run -- --caps=true which will print HELLO, WORLD!