Cli

The following functions require std.Cli to be imported to be used.

flag#

(let flag (fun (name desc) (...))) Defines a command line flag

Note: All flags are optional and turned off

Parameters#

• name: how the flag is named, eg “–debug”
• desc: what the flag achieves

value#

(let value (fun (name desc default) (...))) Defines a command line value

Note: All values are required and equal to their default value

Parameters#

• name: how the value is named, eg “filename”
• desc: what the value is for
• default: default value for the value

oneOf#

(let oneOf (fun (params) (...))) Creates a group of flags/values/groups where only one of the subgroup has to match

Parameter#

• params: list of flags/values/groups

group#

(let group (fun (params) (...))) Creates a group of flags/values/groups where all of the subgroups have to match

Parameter#

• params: list of flags/values/groups

parseArgs#

(let parseArgs (fun (args cli) (...))) Parse a list of arguments given a CLI definition

Note: Recursively visit the CLI to parse the argument list

Author: @SuperFola

Parameters#

• args: list of arguments, eg sys:args
• cli: cli definition

Example#

(import std.Cli)
(let command_line
  (cli:oneOf [
    (cli:flag "--help" "Display a help message")
    (cli:flag "--repl" "Start the REPL")
    (cli:group [
      (cli:flag "-c" "Compile a given file")
      (cli:value "file" "Path to the file to run" nil) ])]))

(print (cli:help "miniark" "A mini ArkScript CLI" command_line))
(print (cli:parseArgs ["-c" "path.ark"] command_line))