Extension:RomanNumbers
<translate> This extension stores its source code on a wiki page.</translate> <translate> Please be aware that this code may be unreviewed or maliciously altered.</translate> <translate> They may contain security holes, outdated interfaces that are no longer compatible etc.</translate> <translate> Note:</translate> <translate> No [[<tvar name=localisation>Special:MyLanguage/Localisation#Translation resources</tvar>|localisation]] updates are provided for this extension by <tvar name=twn>translatewiki.net </tvar>.</translate> |
<translate> This extension is currently not actively maintained!</translate> <translate> Although it may still work, any bug reports or feature requests will more than likely be ignored.</translate> |
RomanNumbers Release status: unmaintained |
|
---|---|
Implementation | Parser extension , Parser function |
Description | Convert a roman number to an arabic one or vice versa. |
Author(s) | Massimiliano Salvemini |
Latest version | 3.0 (2021-11-17) |
MediaWiki | 1.31+ |
License | GNU General Public License 2.0 or later |
Download | see code below |
Quarterly downloads | Lua error in Module:Extension at line 172: bad argument #1 to 'inNamespace' (unrecognized namespace name 'skin'). |
Public wikis using | Lua error in Module:Extension at line 172: bad argument #1 to 'inNamespace' (unrecognized namespace name 'skin'). |
The RomanNumbers extension adds a parser function that converts one arabic number to a roman number or vice versa. If the argument is a string, it try to parse the string and convert it in an arabic number, while, if the argument is an arabic number, the parser converts it in a roman number.
The allowed range is from 1 to 9999 on the conversion arabic to roman, while when converting a roman number to an arabic one the conversion range is limited only by PHP variable's size. <roman>MCLVI</roman>
Examples
{{#tag:123}}
returns CXXIII{{#tag:MDXCII}}
returns 1,592{{#tag:MyDzXCII}}
returns always 1,592 (unrecognized chars are skipped){{#tag:123MII}}
returns always 1,002 (unrecognized chars are skipped)
Installation
- <translate> <tvar name=1>Copy the code into a file called "RomanNumbers.php"</tvar> and place the file(s) in a directory called <tvar name=name>
RomanNumbers
</tvar> in your <tvar name=ext>extensions/
</tvar> folder.</translate> - <translate> Add the following code at the bottom of your <tvar name=1>LocalSettings.php </tvar> file:</translate>
require_once "$IP/extensions/RomanNumbers/RomanNumbers.php";
- File:OOjs UI icon check-constructive.svg <translate> Done</translate> – <translate> Navigate to <tvar name=special>Special:Version</tvar> on your wiki to verify that the extension is successfully installed.</translate>
Code
- RomanNumbers.php
<?php
if (!defined('MEDIAWIKI'))
die(' This file is a MediaWiki extension, it is not a valid entry point '
);
$wgExtensionCredits['parserhook'][] = array(
'name' => 'RomanNumbers',
'author' => array(
'Massimiliano Salvemini',
'Hakob Barseghyan'
),
'version' => '3.0',
'license-name' => 'GPL-2.0-or-later',
'url' => 'https://www.mediawiki.org/wiki/Extension:RomanNumbers',
'description' => 'Converts an Arabic number to a Roman number and vice versa'
);
$magicWords = [];
$magicWords['en'] = [ 'roman' => [ 0, 'roman' ] ];
class RomanNumbers {
//Conversion: Roman Numeral to Integer
public static function toArabic($roman) {
static $conv = array(
array("letter" => 'I', "number" => 1),
array("letter" => 'V', "number" => 5),
array("letter" => 'X', "number" => 10),
array("letter" => 'L', "number" => 50),
array("letter" => 'C', "number" => 100),
array("letter" => 'D', "number" => 500),
array("letter" => 'M', "number" => 1000),
array("letter" => 0, "number" => 0)
);
$arabic = 0;
$state = 0;
$sidx = 0;
$len = strlen($roman);
while ($len > 0) {
$i = 0;
$sidx = $len -1;
while ($conv[$i]["number"] > 0)
{
if (strtoupper($roman[$sidx]) == $conv[$i]["letter"])
{
if ($state > $conv[$i]["number"])
{
$arabic -= $conv[$i]["number"];
}
else
{
$arabic += $conv[$i]["number"];
$state = $conv[$i]["number"];
}
}
$i++;
}
$len--;
}
return($arabic);
}
public static function toRoman($num) {
if ($num < 0 || $num > 9999) return -1;
$romanOnes = array(1=> "I",2=>"II",3=>"III",4=>"IV", 5=>"V", 6=>"VI", 7=>"VII", 8=>"VIII", 9=>"IX" );
$romanTens = array(1=> "X", 2=>"XX", 3=>"XXX", 4=>"XL", 5=>"L", 6=>"LX", 7=>"LXX",8=>"LXXX", 9=>"XC");
$romanHund = array(1=> "C", 2=>"CC", 3=>"CCC", 4=>"CD", 5=>"D", 6=>"DC", 7=>"DCC",8=>"DCCC", 9=>"CM");
$romanThou = array(1=> "M", 2=>"MM", 3=>"MMM", 4=>"MMMM", 5=>"MMMMM", 6=>"MMMMMM",7=>"MMMMMMM", 8=>"MMMMMMMM", 9=>"MMMMMMMMM");
$ones = $num % 10;
$tens = ($num - $ones) % 100;
$hund = ($num - $tens - $ones) % 1000;
$thou = ($num - $hund - $tens - $ones) % 10000;
$tens = $tens / 10;
$hund = $hund / 100;
$thou = $thou / 1000;
$romanNum = '';
if ($thou) $romanNum .= $romanThou[$thou];
if ($hund) $romanNum .= $romanHund[$hund];
if ($tens) $romanNum .= $romanTens[$tens];
if ($ones) $romanNum .= $romanOnes[$ones];
return $romanNum;
}
}
$wgHooks['ParserFirstCallInit'] = 'onParserFirstCallInit';
function onParserFirstCallInit($parser) {
$parser->setFunctionHook( 'tag', 'wfRomanParse_Render' );
}
function wfRomanParse_Render(&$parser, $param1 = '') {
return convertRomanNumber($param1);
}
$wgAjaxExportList[] = "convertRomanNumber";
function convertRomanNumber($num) {
if (is_numeric($num)) {
if (($num > 9999)||($num<1)) return "error";
return RomanNumbers::toRoman($num);
}
else
return RomanNumbers::toArabic($num);
}
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