<?php
if (!defined('MEDIAWIKI'))
die(' This file is a MediaWiki extension, it is not a valid entry point ');
$wgExtensionCredits['parserhook'][] = array(
'name' => 'RomanNumbers',
'author' =>'Massimiliano Salvemini (corrected by Hakob Barseghyan)',
'version' => 1.1,
'url' => '<nowiki>https://www.mediawiki.org/wiki/Extension:RomanNumbers'</nowiki>,
'description' => 'Converts an arabic number to a roman number and vice versa'
);
class RomanNumbers {
//Conversion: Roman Numeral to Integer
public static function toArabic($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;
$romanNum = <nowiki>''</nowiki>;
if ($thou) $romanNum .= $romanThou[$thou];
if ($hund) $romanNum .= $romanHund[$hund];
if ($tens) $romanNum .= $romanTens[$tens];
if ($ones) $romanNum .= $romanOnes[$ones];
return $romanNum;
}
}
$wgExtensionFunctions[] = 'wfRomanParse_Setup';
$wgHooks['LanguageGetMagic'][] = 'wfRomanParse_Magic';
function wfRomanParse_Setup() {
global $wgParser;
$wgParser->setFunctionHook( 'roman', 'wfRomanParse_Render' );
}
function wfRomanParse_Magic( &$magicWords, $langCode ) {
$magicWords['roman'] = array( 0, 'roman' );
return true;
}
function wfRomanParse_Render(&$parser, $param1 = <nowiki>''</nowiki>) {
return convertRomanNumber($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);
}
