b2e8bcd291
Add support for short options with embedded arguments (e.g. -j2).
Add support for implicit boolean options (e.g. -q -> {quiet, true}).
Add support for option terminator ("--").
51 lines
2.0 KiB
Erlang
Executable File
51 lines
2.0 KiB
Erlang
Executable File
#!/usr/bin/env escript
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%% -*- erlang -*-
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%%! -sname ex1 -pz ebin
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%%%-------------------------------------------------------------------
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%%% @author Juan Jose Comellas <juanjo@comellas.org>
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%%% @copyright (C) 2009 Juan Jose Comellas
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%%% @doc Example file for the getopt module.
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%%% @end
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%%%
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%%% This source file is subject to the New BSD License. You should have received
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%%% a copy of the New BSD license with this software. If not, it can be
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%%% retrieved from: http://www.opensource.org/licenses/bsd-license.php
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%%%-------------------------------------------------------------------
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-module(rebar_test).
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-author('juanjo@comellas.org').
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main([]) ->
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usage();
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main(Args) ->
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OptSpecList = option_spec_list(),
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io:format("For command line: ~p~n"
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"getopt:parse/2 returns:~n~n", [Args]),
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case getopt:parse(OptSpecList, Args) of
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{ok, {Options, NonOptArgs}} ->
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io:format("Options:~n ~p~n~nNon-option arguments:~n ~p~n", [Options, NonOptArgs]);
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{error, {Reason, Data}} ->
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io:format("Error: ~s ~p~n~n", [Reason, Data]),
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usage(OptSpecList)
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end.
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usage() ->
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usage(option_spec_list()).
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usage(OptSpecList) ->
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getopt:usage(OptSpecList, escript:script_name(), "[var1=val1 ...] [command1 ...]",
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[{"var=value", "Variables that will affect the compilation (e.g. debug=1)"},
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{"command", "Commands that will be executed by rebar (e.g. compile)"}]).
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option_spec_list() ->
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CpuCount = erlang:system_info(logical_processors),
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[
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%% {Name, ShortOpt, LongOpt, ArgSpec, HelpMsg}
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{help, $h, "help", undefined, "Show the program options"},
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{jobs, $j, "jobs", {integer, CpuCount}, "Number of concurrent jobs"},
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{verbose, $v, "verbose", {boolean, false}, "Be verbose about what gets done"},
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{force, $f, "force", {boolean, false}, "Force"}
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].
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