9283bc0697
This commit adds support for a type of command-line options that are
commonly used by many GNU tools. Now with this modification if you
have an option named 'verbose' with an integer argument and you enter
"-vvv" as in the command line you'll get {verbose, 3} as a result.
52 lines
2.3 KiB
Erlang
Executable File
52 lines
2.3 KiB
Erlang
Executable File
#!/usr/bin/env escript
|
|
%% -*- erlang -*-
|
|
%%! -sname ex1 -pz ebin
|
|
|
|
%%%-------------------------------------------------------------------
|
|
%%% @author Juan Jose Comellas <juanjo@comellas.org>
|
|
%%% @copyright (C) 2009 Juan Jose Comellas
|
|
%%% @doc Example file for the getopt module.
|
|
%%% @end
|
|
%%%
|
|
%%% This source file is subject to the New BSD License. You should have received
|
|
%%% a copy of the New BSD license with this software. If not, it can be
|
|
%%% retrieved from: http://www.opensource.org/licenses/bsd-license.php
|
|
%%%-------------------------------------------------------------------
|
|
-module(ex1).
|
|
-author('juanjo@comellas.org').
|
|
|
|
main([]) ->
|
|
getopt:usage(option_spec_list(), escript:script_name());
|
|
main(Args) ->
|
|
OptSpecList = option_spec_list(),
|
|
io:format("For command line: ~p~n"
|
|
"getopt:parse/2 returns:~n~n", [Args]),
|
|
case getopt:parse(OptSpecList, Args) of
|
|
{ok, {Options, NonOptArgs}} ->
|
|
io:format("Options:~n ~p~n~nNon-option arguments:~n ~p~n", [Options, NonOptArgs]);
|
|
{error, {Reason, Data}} ->
|
|
io:format("Error: ~s ~p~n~n", [Reason, Data]),
|
|
getopt:usage(OptSpecList, "ex1.escript")
|
|
end.
|
|
|
|
|
|
option_spec_list() ->
|
|
CurrentUser = case os:getenv("USER") of
|
|
false ->
|
|
"user";
|
|
User ->
|
|
User
|
|
end,
|
|
[
|
|
%% {Name, ShortOpt, LongOpt, ArgSpec, HelpMsg}
|
|
{help, $?, "help", undefined, "Show the program options"},
|
|
{username, $U, "username", string, "Username to connect to the database"},
|
|
{password, $P, "password", {string, CurrentUser}, "Password to connect to the database"},
|
|
{host, $h, "host", {string, "localhost"}, "Database server host name or IP address"},
|
|
{port, $p, "port", {integer, 1000}, "Database server port"},
|
|
{output_file, $o, "output-file", string, "File where the data will be saved to"},
|
|
{xml, $x, "xml", undefined, "Output data as XML"},
|
|
{verbose, $v, "verbose", integer, "Verbosity level"},
|
|
{dbname, undefined, undefined, string, "Database name"}
|
|
].
|