/*!
 * Hyundai UNI JavaScript Library v2.2.0
 * http://www.hyundai-uni.com/
 *
 * Copyright 2007-2014 Hyundai Ubiquitous & Information Technology CO.LTD.
 *
 * 시스템에 공통으로 사용하는 유틸리티 함수를 정의한 js
 *
 * @author 권중규
 */
var StringUtils = {
    startsWith: function(str, prefix, offset) {
        var to = (offset || 0);
        var po = 0;
        var pc = prefix.length;

        if((to < 0) || (to > str.length - pc)) {
            return false;
        }
        while(--pc >= 0) {
            if(str.charAt(to++) != prefix.charAt(po++)) {
                return false;
            }
        }
        return true;
    },

    endsWith: function(str, suffix) {
        return StringUtils.startsWith(str, suffix, str.length - suffix.length);
    },

    isEmpty: function(object) {
        if(object == null || object == "") {
            return true;
        }

        return false;
    },

    isNotEmpty: function(object) {
        return !StringUtils.isEmpty(object);
    },

    defaultIfEmpty: function(str, defaultStr) {
        return !StringUtils.isEmpty(str) ? str : (defaultStr || "");
    },

    removeStart: function(str, remove) {
        if(StringUtils.isEmpty(str) || StringUtils.isEmpty(remove)) {
            return str;
        }
        if(StringUtils.startsWith(str, remove)) {
            return str.substring(remove.length);
        }

        return str;
    },

    removeEnd: function(str, remove) {
        if(StringUtils.isEmpty(str) || StringUtils.isEmpty(remove)) {
            return str;
        }
        if(StringUtils.endsWith(str, remove)) {
            return str.substring(0, str.length - remove.length);
        }

        return str;
    },

    strip: function(str, stripChars) {
        if(StringUtils.isEmpty(str)) {
            return str;
        }
        str = StringUtils.stripStart(str, stripChars);
        return StringUtils.stripEnd(str, stripChars);
    },

    stripStart: function(str, stripChars) {
        var strLen = 0;
        if(str == null || (strLen = str.length) == 0) {
            return str;
        }
        var start = 0;
        if(!stripChars) {
            while(start != strLen && (str.charAt(start) == "")) {
                start++;
            }
        }
        else if(stripChars.length == 0) {
            return str;
        }
        else {
            while(start != strLen && stripChars.indexOf(str.charAt(start)) != -1) {
                start++;
            }
        }
        return str.substring(start);
    },

    stripEnd: function(str, stripChars) {
        var end = 0;
        if(str == null || (end = str.length) == 0) {
            return str;
        }

        if(!stripChars) {
            while(end != 0 && (str.charAt(end - 1) == "")) {
                end--;
            }
        }
        else if(stripChars.length == 0) {
            return str;
        }
        else {
            while(end != 0 && stripChars.indexOf(str.charAt(end - 1)) != -1) {
                end--;
            }
        }
        return str.substring(0, end);
    }
};

var NumberUtils = {
    toString: function(number, length) {
        var numberString = (number || 0).toString();
        var pads = (length || 0) - numberString.length;

        var padString = "";
        if(pads > 0) {
            for( var i = 0; i < pads; i++) {
                padString += "0";
            }
        }

        return padString + numberString;
    }
};