/* Random Util Functions */

(function ($) {
    // A string.Format like function
    // USAGE : $.format("{0} {1}", "hello", "world");
    $.format = function () {
        var s = arguments[0];

        if (!s)
            return '';

        for (var i = 0; i < arguments.length - 1; i++) {
            var reg = new RegExp("\\{" + i + "\\}", "gm");

            if (arguments[i + 1] == null)
                arguments[i + 1] = '';

            s = s.replace(reg, arguments[i + 1]);
        }

        return s;
    };

    $.stripHtmlTags = function () {
        var s = arguments[0];
        s = s.replace("<", "");
        s = s.replace(">", "");
        return s;
    }
    $.validateEmail = function (email) {
        var regExp = /^((([a-zA-Z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-zA-Z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-zA-Z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-zA-Z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-zA-Z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-zA-Z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-zA-Z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-zA-Z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-zA-Z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-zA-Z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/;

        return regExp.test(email);
    }

    $.isNull = function (value) {
        if (value == null)
            return true;

        if (value == undefined)
            return true;

        return false;
    }

    $.isNullOrZero = function (value) {
        if (value == null)
            return true;

        if (value == undefined)
            return true;

        if (value == 0)
            return true;

        return false;
    }

    $.isNullOrEmpty = function (value) {
        if (value == null)
            return true;

        if (value == undefined)
            return true;

        if (value == '')
            return true;

        return false;
    }

    $.isNullOrWhitespace = function (value) {
        if (value == null)
            return true;

        if (value == undefined)
            return true;

        if (value == '')
            return true;

        if (typeof value == "string") {
            if ($.trim(value) == '')
                return true;
        }

        return false;
    }

    $.bytesToSize = function (bytes) {
        var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
        if (bytes == 0) return '0 Bytes';
        var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
        return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i];
    };
})(jQuery);