Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;

** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

** See the GNU Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

var CDate = function () {

    this.clientDate = (arguments.length > 0)

        ? new Date(arguments[0])

        : new Date();

    this.calcTZdiff(this.clientDate.getTime());

    this.serverDate = new Date(this.clientDate.getTime() - this.tzDiff * 1000);

};

​

CDate.prototype = {

    server:     0,          // getTime uses clients :0, or servers time :1

    tzDiff:     0,          // server and client TZ diff

    clientDate: null,   // clients(JS, Browser) date object

    serverDate: null,   // servers(PHP, Unix) date object

​

    calcTZdiff: function(time) {

        if (time === undefined) {

            time = new Date().getTime();

        }

​

        const timestamp = Object.keys(PHP_TZ_OFFSETS).reverse().find((ts) => ts * 1000 <= time);

​

        this.tzDiff = this.clientDate.getTimezoneOffset() * -60 - PHP_TZ_OFFSETS[timestamp];

    },

​

    /**

    * Formats date according given format. Uses server timezone.

    * Supported formats:    'd M Y H:i', 'j. M Y G:i', 'Y/m/d H:i', 'Y-m-d H:i', 'Y-m-d H:i:s', 'Y-m-d h:i:s A',

    *                       'Y-m-d','H:i:s', 'H:i', 'M jS, Y h:i A', 'Y M d H:i', 'd.m.Y H:i' and 'd m Y H i'

    *                       Format 'd m Y H i' is also accepted but used internally for date input fields.

    *

    * @param format PHP style date format limited to supported formats

    *

    * @return string|bool human readable date or false if unsupported format given

    */

    format: function(format) {

        const shortMn = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];

​

        const dt = this.getDate();

        const mnth = this.getMonth();

        const yr = this.getFullYear();

        const hrs = this.getHours();

        const mnts = this.getMinutes();

        const sec = this.getSeconds();

        const ampm = (hrs < 12) ? 'AM' : 'PM';

        const ampmhrs = appendZero((hrs + 11) % 12 + 1);

​

        /**

         * Append date suffix according to English rules e.g., 3 becomes 3rd.

         *