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babashka.cli

auto-coerce

(auto-coerce s)

Auto-coerces s to data. Does not coerce when s is not a string. If s:

  • is true or false, it is coerced as boolean
  • starts with number, it is coerced as a number (through edn/read-string)
  • starts with :, it is coerced as a keyword (through parse-keyword)
    source

coerce

(coerce s f)

Coerce string s using f. Does not coerce when s is not a string. f may be a keyword (:boolean, :int, :double, :symbol, :keyword) or a function. When f return nil, this is interpreted as a parse failure and throws.
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dispatch

(dispatch table args)
(dispatch table args opts)

Subcommand dispatcher.

Dispatches on longest matching command entry in table by matching subcommands to the :cmds vector and invoking the correspondig :fn.

Table is in the form:

[{:cmds ["sub_1" .. "sub_n"] :fn f :cmds-opts [:lib]}
 ...
 {:cmds [] :fn f}]

When a match is found, :fn called with the return value of parse-args applied to args enhanced with:

  • :dispatch - the matching commands
  • :args - concatenation of unparsed commands and args
  • :rest-cmds: DEPRECATED, this will be removed in a future version

Use an empty :cmds vector to always match or to provide global options.

Provide an :error-fn to deal with non-matches.

Each entry in the table may have additional parse-args options.

For more information and examples, see README.md.
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format-opts

(format-opts {:as cfg, :keys [indent], :or {indent 2}})

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format-table

(format-table {:keys [rows indent]})

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merge-opts

(merge-opts m & ms)

Merges babashka CLI options.
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number-char?

(number-char? c)

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opts->table

(opts->table {:keys [spec order]})

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pad

(pad len s)

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pad-cells

(pad-cells rows)

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parse-args

(parse-args args)
(parse-args args opts)

Same as parse-opts but separates parsed opts into :opts and adds :cmds and :rest-args on the top level instead of metadata.
source

parse-cmds

(parse-cmds args)
(parse-cmds args {:keys [no-keyword-opts]})

Parses sub-commands (arguments not starting with an option prefix) and returns a map with:

  • :cmds - The parsed subcommands
  • :args - The remaining (unparsed) arguments
    source

parse-keyword

(parse-keyword s)

Parse keyword from s. Ignores leading :.
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parse-opts

(parse-opts args)
(parse-opts args opts)

Parse the command line arguments args, a seq of strings. Instead of a leading : either -- or - may be used as well.

Return value: a map with parsed opts.

Additional data such as arguments (not corresponding to any options) are available under the :org.babashka/cli key in the metadata.

Supported options:

  • :coerce - a map of option (keyword) names to type keywords (optionally wrapped in a collection.)
  • :alias - a map of short names to long names.
  • :spec - a spec of options. See spec.
  • :restrict - true or coll of keys. Throw on first parsed option not in set of keys or keys of :spec and :coerce combined.
  • :require - a coll of options that are required. See require.
  • :validate - a map of validator functions. See validate.
  • :exec-args - a map of default args. Will be overridden by args specified in args.
  • :no-keyword-opts - true. Support only --foo-style opts (i.e. :foo will not work).
  • :args->opts - consume unparsed commands and args as options

Examples:

(parse-opts ["foo" ":bar" "1"])
;; => {:bar "1", :org.babashka/cli {:cmds ["foo"]}}
(parse-args [":b" "1"] {:aliases {:b :bar} :coerce {:bar parse-long}})
;; => {:bar 1}
(parse-args ["--baz" "--qux"] {:spec {:baz {:desc "Baz"} :restrict true})
;; => throws 'Unknown option --qux' exception b/c there is no :qux key in the spec


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rows

source

spec->opts

(spec->opts spec)
(spec->opts spec {:keys [exec-args]})

Converts spec into opts format. Pass existing opts as optional second argument.
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babashka.cli.exec

-main

(-main & args)

Main entrypoint for command line usage. Expects a namespace and var name followed by zero or more key value pair arguments that will be parsed and passed to the var. If the first argument is map-shaped, it is read as an EDN map containing parse instructions.

Example when used as a clojure CLI alias:

clojure -M:exec clojure.core prn :a 1 :b 2
;;=> {:a "1" :b "2"}


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main

(main & args)

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