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82 lines
2.2 KiB
Mathematica
82 lines
2.2 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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%
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% Regression test.
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%
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% Name: getopt_test.m
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%
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% Description of bug:
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% "-" was not being handled correctly by getopt. It should be left
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% alone, but was being processed by an option.
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%
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% Symptom(s) of bug:
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% "-" as an option would be silently ignored.
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%
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% Date bug existed: 8-July-1997
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%
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% Author: trd
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%
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% Note: This bug report (and fix) provided by Philip Dart.
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%---------------------------------------------------------------------------%
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:- module getopt_test.
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:- interface.
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:- import_module getopt.
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:- import_module io.
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:- type option
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---> foo
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; bar.
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:- type option_table == option_table(option).
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:- pred short_option(character::in, option::out) is semidet.
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:- pred long_option(string::in, option::out) is semidet.
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:- pred option_defaults(option::out, option_data::out) is nondet.
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:- pred option_default(option::out, option_data::out) is multidet.
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:- pred main(io::di, io::uo) is det.
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%---------------------------------------------------------------------------%
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:- implementation.
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:- import_module bool.
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:- import_module list.
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:- import_module require.
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:- import_module std_util.
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option_defaults(Option, Default) :-
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semidet_succeed,
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option_default(Option, Default).
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option_default(foo, string("happy")).
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option_default(bar, bool(yes)).
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short_option('f', foo).
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short_option('b', bar).
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long_option("foo", foo).
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long_option("bar", bar).
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main(!IO) :-
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Ops = option_ops(short_option, long_option, option_defaults),
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getopt.process_options(Ops, ["-"], Left, MaybeOptionTable),
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( if
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MaybeOptionTable = ok(OptionTable)
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then
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getopt.lookup_bool_option(OptionTable, bar, Bar),
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getopt.lookup_string_option(OptionTable, foo, FooStr),
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io.write_string("option bar: `", !IO),
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io.write(Bar, !IO),
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io.write_string("'\n", !IO),
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io.write_string("option foo: `", !IO),
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io.write_string(FooStr, !IO),
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io.write_string("'\n", !IO),
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io.write_line(Left, !IO)
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else
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error("unable to process options")
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).
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