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# ex:ts=8 sw=4:
# $OpenBSD: Interactive.pm,v 1.20 2015/01/30 11:42:55 espie Exp $
#
# Copyright (c) 2005-2007 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
use strict;
use warnings;
package OpenBSD::Interactive;
sub new
{
my ($class, $state, $level) = @_;
bless {
state => $state,
always => 0,
level => $level,
}, $class;
}
sub ask_list
{
my ($self, $prompt, @values) = @_;
if ($self->{always}) {
return $values[0];
}
$self->{state}->errsay('#1', $prompt);
my $i = 0;
for my $v (@values) {
$self->{state}->errsay("#1\t#2: #3",
$i == 0 ? "a" : "", $i, $v);
$i++;
}
LOOP:
$self->{state}->errprint("Your choice: ");
my $result = <STDIN>;
unless (defined $result) {
$self->{state}->errsay("");
return $values[0];
}
chomp $result;
if ($result eq '') {
return $values[0];
}
if ($result eq 'a') {
$self->{always} = 1;
return $values[0];
}
if ($result =~ m/^\d+$/o) {
if ($result >= 0 && $result < @values) {
return $values[$result];
}
$self->{state}->errsay("invalid numeric value !");
goto LOOP;
}
if (grep { $result eq $_ } @values) {
return $result;
} else {
$self->{state}->errsay("Ambiguous value !");
goto LOOP;
}
}
sub confirm
{
my ($self, $prompt, $yesno) = @_;
if ($self->{always}) {
return 1;
}
LOOP2:
$self->{state}->errprint("#1 ? [#2/a] ",
$prompt, $yesno ? "Y/n" : "y/N");
my $result = <STDIN>;
unless(defined $result) {
$self->{state}->errsay("");
return $yesno;
}
chomp $result;
$result =~ s/\s+//go;
$result =~ tr/A-Z/a-z/;
if ($result eq 'yes' or $result eq 'y') {
return 1;
}
if ($result eq 'no' or $result eq 'n') {
return 0;
}
if ($result eq 'a') {
$self->{always} = 1;
return 1;
}
if ($result eq '') {
return $yesno;
}
$self->{state}->errsay("Ambiguous answer");
goto LOOP2;
}
sub is_interactive
{
return shift->{level};
}
1;
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