SpectraCli

Spectra’s command grammar, built applicatively with Std Cli.

The executable understands three subcommands, each defaulting its project path to the current directory:

spectra check [PATH]
spectra build [PATH] --output deck.pdf --open
spectra clean [PATH]

Parsing is a pure function over an argument list, so the grammar is its own test surface:

fn main() =
  match parse_spectra_argv(["build", "talk", "--open"]) of
    C.Parsed(cmd) => println(show(cmd))
    _ => println("usage error")

SpectraCli.Build("talk", "deck.pdf", true)

Types

SpectraCommand

type SpectraCommand
  = Check(String)
  | Build(String, String, Bool)
  | Clean(String)
  deriving (Eq, Show)

One parsed subcommand: check a project, build it to a named PDF and optionally open it, or clean its build directory.

Functions and Values

spectra_command

spectra_command : Cli.Command(SpectraCommand)

The whole command grammar the executable parses its argument list with.

parse_spectra_argv

parse_spectra_argv : (List(String)) -> Cli.Outcome(SpectraCommand)

Parse an argument list against the grammar, without touching the process environment.