This javascript function does it:
- Code: Select all
function romanToArabic(roman){
if(roman == null)
return -1;
var totalValue = 0,
value = 0, // Initialise!
prev = 0;
for(var i=0;i<roman.length;i++){
var current = char_to_int(roman.charAt(i));
if (current < 0) return -1;
if (current > prev) {
// Undo the addition that was done, turn it into subtraction
totalValue -= 2 * value;
}
if (current !== prev) { // Different symbol?
value = 0; // reset the sum for the new symbol
}
value += current; // keep adding same symbols
totalValue += current;
prev = current;
}
return totalValue;
}
function char_to_int(character) {
switch(character){
case 'I': return 1;
case 'V': return 5;
case 'X': return 10;
case 'L': return 50;
case 'C': return 100;
case 'D': return 500;
case 'M': return 1000;
default: return -1;
}
}
var string = name;
string = string.split(" ");
var stringArray = new Array();
for(var i =0; i < string.length; i++){
stringArray.push(string[i]);
if(i != string.length-1){
stringArray.push(" ");
}
}
newName = "";
var arabic = "";
for(var i =0; i < stringArray.length; i++){
arabic = romanToArabic(stringArray[i]);
if (arabic > -1) newName += arabic; else newName += stringArray[i];
}
Copy and paste into BRU Javascript Renaming section.
If you have just a few numbers to convert you could otherwise use replace or character convertions.