persian-number-tostring/lib/index.js

Convert numbers to words - تبدیل عدد به حروف فارسی

'use strict';
exports = module.exports = PersianNumberToString;

var s_0_9 = new Array('صفر', 'یک', 'دو', 'سه', 'چهار', 'پنج', 'شش', 'هفت', 'هشت', 'نه');
var s_10_19 = new Array('ده', 'یازده', 'دوازده', 'سیزده', 'چهارده', 'پانزده', 'شانزده', 'هفده', 'هجده', 'نوزده');
var s_20_90 = new Array('بیست', 'سی', 'چهل', 'پنجاه', 'شصت', 'هفتاد', 'هشتاد', 'نود');
var s_100_900 = new Array('صد', 'دویست', 'سیصد', 'چهارصد', 'پانصد', 'ششصد', 'هفتصد', 'هشتصد', 'نهصد');
var s_Parts = new Array('هزار', 'میلیون', 'میلیارد', 'تريليون');
var splitter = " و ";
var veryBig = "تعریف نشده";
var negative = "منفی";

function getPart(numberIn3) {
    if (numberIn3.length > 3) {
        return "";
    }

    var number = numberIn3.toString();

    switch (number.length) {
        case 1:
            number = "00" + number;
            break;
        case 2:
            number = "0" + number;
            break;
    }

    var outString = "";

    var n1 = parseInt(number.substr(0, 1));
    var n2 = parseInt(number.substr(1, 1));
    var n3 = parseInt(number.substr(2, 1));

    if (n1 != 0) {
        switch (n2) {
            case 0:
                if (n3 != 0) {
                    outString = s_100_900[n1 - 1] + splitter + s_0_9[n3];
                }
                else {
                    outString = s_100_900[n1 - 1];
                };
                break;
            case 1:
                outString = s_100_900[n1 - 1] + splitter + s_10_19[n3];
                break;
            default:
                if (n3 != 0) {
                    outString = s_100_900[n1 - 1] + splitter + s_20_90[n2 - 2] + splitter + s_0_9[n3];
                }
                else {
                    outString = s_100_900[n1 - 1] + splitter + s_20_90[n2 - 2];
                }
        }
    }
    else {
        switch (n2) {
            case 0:
                if (n3 != 0) {
                    outString = s_0_9[n3];
                }
                else {
                    outString = "";
                }
                break;
            case 1:
                outString = s_10_19[n3];
                break;
            default:
                if (n3 != 0) {
                    outString = s_20_90[n2 - 2] + splitter + s_0_9[n3];
                }
                else {
                    outString = s_20_90[n2 - 2];
                }
        }
    };

    return outString;
}






function PersianNumberToString(inputNumber) {

	if(!Number.isSafeInteger(Number(inputNumber))){
		inputNumber="";
	}


	    var tempNumber = Math.abs(inputNumber).toString();
	            
	    if (tempNumber.length == 0) {
	        return "";
	    }

	    if (tempNumber == 0)
	        return s_0_9[0];

	    var partCount = Math.ceil((parseInt(tempNumber).toString().length / 3), 1);

	    if (s_Parts.length < partCount)
	        return veryBig;

	    var partFullString = new Array();

	    for (var i = 0; i < partCount; i++) {
	        var numberLength3;

	        var lengthToSelectFirtPart;
	        if (i == 0) {
	            lengthToSelectFirtPart = tempNumber.length - ((partCount - 1) * 3);
	            numberLength3 = tempNumber.substr((i * 3), lengthToSelectFirtPart);
	        }
	        else {
	            numberLength3 = tempNumber.substr(lengthToSelectFirtPart + ((i - 1) * 3), 3);
	        }

	        var partInWord = getPart(numberLength3);

	        var partIndex = (partCount - 2 - i);
	        var partPreFix = s_Parts[partIndex];

	        if (i == partCount - 1) {
	            partPreFix = "";
	        }

	        if (i == 0) {
	            if (partInWord != "") {
	                partFullString[i] = partInWord + " " + partPreFix;
	            }
	            else {
	                partFullString[i] = "";
	            }
	        }
	        else {
	            if (partFullString[i - 1] != "") {
	                if (partInWord != "") {
	                    partFullString[i] = splitter + partInWord + " " + partPreFix;
	                }
	                else {
	                    partFullString[i] = "";
	                }
	            }
	            else {
	                if (partInWord != "") {
	                    partFullString[i] = splitter + partInWord + " " + partPreFix;
	                }
	                else {
	                    partFullString[i] = "";
	                }
	            }
	        }
	    }

	    var outString = "";

	    for (var i = 0; i < partFullString.length; i++) {
	        outString += partFullString[i];
	    }

	    if (inputNumber.toString().substring(0, 1) == "-") {
	        outString = negative + " " + outString;
	    }

	    return outString;

    
}