String.prototype.bytes = function() {
    var str = this;
    var l = 0;
    for (var i=0; i<str.length; i++) l += (str.charCodeAt(i) > 128) ? 3 : 1;
    return l;
};

String.prototype.cut = function(len) {
    var str = this;
    var l = 0;
    for (var i=0; i<str.length; i++) {
        l += (str.charCodeAt(i) > 128) ? 3 : 1;
        if (l > len) return str.substring(0,i);
    }
    return str;
};

/**
 *  object empty check
 * */

function emptyObject(param){
    return Object.keys(param).length === 0;
}



function isEmptyList(data){
    if(data == undefined || data == null || data.length == 0){
        return true;
    }
    return false;
}


function dateFormatStr (dateStr) {
    var	refinedDateStr;
    var rv;

    if (dateStr == null) {
        return null;
    }
    refinedDateStr	= dateStr.match(/\d+/g);
    if (refinedDateStr == null || refinedDateStr.length == 0) {
        return null;
    }
    refinedDateStr	= refinedDateStr + "";
    switch (refinedDateStr.length) {
        case 4:
            rv	= moment(refinedDateStr, "HHmm");
            break;
        case 6:
            rv	= moment(refinedDateStr, "HHmmss");
            break;
        case 8:
            rv	= moment(refinedDateStr, "YYYYMMDD");
            break;
        case 12:
            rv	= moment(refinedDateStr, "YYYYMMDDHHmm");
            break;
        case 14:
            rv	= moment(refinedDateStr, "YYYYMMDDHHmmss");
            break;
        default:
            throw new Error("invalid date str " + dateStr);
    }
    return rv;
}

function dateFormat(str, type) {
    var	date	= dateFormatStr(str);
    if (date == null) {
        return "";
    }

    if (type == "slash") {
        return date.format("YYYY/MM/DD");
    } else if (type == "date") {
        return date.format("YYYY.MM.DD");
    } else if (type == "colon") {
        return date.format("YYYY:MM:DD");
    } else if (type == "dash") {
        return date.format("YYYY-MM-DD");
    }else if(type == "normal"){
        return date.format("YYYYMMDD");
    } else {
        return date.format("YYYY-MM-DD");
    }
};

function timeFomat (value, type) {
    var	date	= dateFormatStr(value);
    if (date == null) {
        return "";
    }

    if (type == "slash") {
        return date.format("HH:mm:ss");
    } else if (type == "date") {
        return date.format("HH:mm:ss");
    } else if (type == "colon") {
        return date.format("HH:mm:ss");
    } else if (type == "dash") {
        return date.format("HH:mm:ss");
    } else {
        return date.format("HH:mm");
    }
};

function countBytes(obj, len, target){
    var cnt  = obj.value.bytes();
    var txtSplit;
    var ieVersion;
    if(cnt > 0){
        txtSplit = (obj.value).split("\n");
        if(navigator.appName == "Microsoft Internet Explorer"){
            ieVersion = navigator.appVersion.substring(navigator.appVersion.indexOf("MSIE")+5,navigator.appVersion.indexOf("MSIE")+8);
            if(ieVersion >= "9.0"){
                cnt += txtSplit.length - 1
            }
        }else{
            cnt += txtSplit.length - 1
        }
    }

    if(cnt <= len){
        target.textContent = cnt;
    }else{
        alert("허용 글자수를 초과하였습니다.");
        obj.value = obj.value.cut(len - txtSplit.length + 1);
        target.textContent = obj.value.bytes();
    }
}