/usr/share/perl5/Roman.pm is in libroman-perl 1.23-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | package Roman;
use 5.006;
use strict;
use warnings;
our $VERSION='1.23';
=head1 NAME
Roman - Perl module for conversion between Roman and Arabic numerals.
=head1 VERSION
Version 1.20
=cut
=head1 SYNOPSIS
use Roman;
$arabic = arabic($roman) if isroman($roman);
$roman = Roman($arabic);
$roman = roman($arabic);
=head1 DESCRIPTION
This package provides some functions which help conversion of numeric
notation between Roman and Arabic.
=head1 Functions
=head2 isroman
Tests if argument is valid roman number
=head2 arabic
roman => arabic
=head2 Roman
arabic => roman
=head2 roman
Same as Roman, lowercase
=head1 BUGS
Domain of valid Roman numerals is limited to less than 4000, since
proper Roman digits for the rest are not available in ASCII.
Please report any bugs or feature requests to
C<bug-roman /AT/ rt.cpan.org>, or through the web interface at
L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Roman>.
I will be notified, and then you'll automatically be notified of progress on
your bug as I make changes.
=head1 SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Roman
You can also look for information at:
=over 4
=item * AnnoCPAN: Annotated CPAN documentation
L<http://annocpan.org/dist/Roman>
=item * CPAN Ratings
L<http://cpanratings.perl.org/d/Roman>
=item * RT: CPAN's request tracker
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Roman>
=item * Search CPAN
L<http://search.cpan.org/dist/Roman>
=back
=head1 AUTHOR
OZAWA Sakuro <ozawa at aisoft.co.jp> 1995-1997
Alexandr Ciornii, C<< <alexchorny at gmail.com> >> 2007
=head1 COPYRIGHT
Copyright (c) 1995 OZAWA Sakuro. All rights reserved. This program
is free software; you can redistribute it and/or modify it under the
same terms as Perl itself.
=cut
use Exporter 'import';
#our @ISA = qw(Exporter);
our @EXPORT = qw(isroman arabic Roman roman);
our %roman2arabic = qw(I 1 V 5 X 10 L 50 C 100 D 500 M 1000);
my %roman_digit = qw(1 IV 10 XL 100 CD 1000 MMMMMM);
my @figure = reverse sort keys %roman_digit;
#my %roman_digit;
$roman_digit{$_} = [split(//, $roman_digit{$_}, 2)] foreach @figure;
sub isroman($) {
my $arg = shift;
$arg ne '' and
$arg =~ /^(?: M{0,3})
(?: D?C{0,3} | C[DM])
(?: L?X{0,3} | X[LC])
(?: V?I{0,3} | I[VX])$/ix;
}
sub arabic($) {
my $arg = shift;
isroman $arg or return undef;
my($last_digit) = 1000;
my($arabic);
foreach (split(//, uc $arg)) {
my($digit) = $roman2arabic{$_};
$arabic -= 2 * $last_digit if $last_digit < $digit;
$arabic += ($last_digit = $digit);
}
$arabic;
}
sub Roman($) {
my $arg = shift;
0 < $arg and $arg < 4000 or return undef;
my($x, $roman);
foreach (@figure) {
my($digit, $i, $v) = (int($arg / $_), @{$roman_digit{$_}});
if (1 <= $digit and $digit <= 3) {
$roman .= $i x $digit;
} elsif ($digit == 4) {
$roman .= "$i$v";
} elsif ($digit == 5) {
$roman .= $v;
} elsif (6 <= $digit and $digit <= 8) {
$roman .= $v . $i x ($digit - 5);
} elsif ($digit == 9) {
$roman .= "$i$x";
}
$arg -= $digit * $_;
$x = $i;
}
$roman;
}
sub roman($) {
lc Roman shift;
}
1; # End of Roman
|