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var codify = module.exports = {};
// This function accepts numbers from 0-35
function character(num) {
if (num < 10) return String(num);
return String.fromCharCode(num-10+65);
}
/*
* Generate an alphanumeric (base-36) code from an integer
*/
codify.toCode = function(val, minSize) {
minSize = minSize || 1;
var code = '';
while (val >= 1) {
var remainder = val % 36;
val = Math.floor(val / 36);
code = character(remainder)+code;
}
while (code.length < minSize) {
code = '0'+code;
}
return code;
};
var digits = {};
for (var i = 0; i < 10; i++) {
digits[String(i)] = i;
}
for (i = 0; i < 26; i++) {
digits[String.fromCharCode(i+65)] = i+10;
}
/*
* Convert an alphanumeric (base-36) code to an integer
*/
codify.toInt = function(code) {
var calculated = 0;
for (var i =0; i < code.length; i++) {
var num = digits[code.charAt(i)];
calculated += Math.pow(36, code.length-i-1)*num;
}
return calculated;
};