#!/usr/bin/perl

# $Id: pwgen.pl,v 1ad4c2066b77 2020/12/09 14:56:54 grin $

# (c)Peter Gervai, 2002; Released under GPLv2 + CC_BY-SA-2.0

#

# jelszogenerator, 2002/04/08; 2016/11/09; 2020/12/09

#

use Getopt::Long;

my $help;

my $words=5;

my $syllab=4;

my $dash;

my $dashlen=2;

my $dashchr='-';

my $longsyl=20;

my $nolf=0;

GetOptions(

  "help" 	=> \&help,

  "words=i" 	=> \$words,

  "syllab=i"	=> \$syllab,

  "dash"	=> \$dash,

  "dashlen=i"	=> \$dashlen,

  "longsyl=i"	=> \$longsyl,

  "dashchr=s"	=> \$dashchr,

  "nolf"	=> \$nolf,

) or &help;

$vowel='aeiou';

#$cons='bcdfghjklmnpqrstvwxyz';

 $cons='bcdfghjklmnprstvxyz';

$vlen=length($vowel);

$clen=length($cons);

$longsyl=20; # percent

for (1..$words) {

    my $dash_count=0;

    my $sylnum=$syllab + rand(3);

    for my $i (1..$sylnum) {

        print substr($cons,rand($clen),1);

        print substr($vowel,rand($vlen),1);

        print substr($cons,rand($clen),1) if $longsyl > rand(100);

        print $dashchr  unless !$dash or ++$dash_count % $dashlen  or  $i>$sylnum-$dashlen;

    }

    print "   " unless $words == 1;

}

print "\n" unless $nolf;

sub help {

    print "Usage:\n";

    print "  $0 [--help] [--words=$words] [--syllab=$syllab] [--longsyl=$longsyl] [--dash [--dashchr=$dashchr] [--dashlen=$dashlen]]\n";

    print "      words:   how many passwords to display\n";

    print "      syllab:  how many syllables in a word\n";

    print "      dash:    use dash between syllables\n";

    print "      dashlen: use dash between every N syllable\n";

    print "      longsyl: long syllable probability (percent)\n";

    print "      dashchr: character to use instead of '-'\n";

    print "      nolf:    don't print a linefeed after the last word\n";

    exit;

}