150 lines
4.3 KiB
PHP
150 lines
4.3 KiB
PHP
<?php
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// {{{ICINGA_LICENSE_HEADER}}}
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/**
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* This file is part of Icinga Web 2.
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*
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* Icinga Web 2 - Head for multiple monitoring backends.
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* Copyright (C) 2013 Icinga Development Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* @copyright 2013 Icinga Development Team <info@icinga.org>
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* @license http://www.gnu.org/licenses/gpl-2.0.txt GPL, version 2
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* @author Icinga Development Team <info@icinga.org>
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*
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*/
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// {{{ICINGA_LICENSE_HEADER}}}
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namespace Icinga\Util;
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use Icinga\Exception\ProgrammingError;
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class Format
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{
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const STANDARD_IEC = 0;
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const STANDARD_SI = 1;
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protected static $instance;
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protected static $bitPrefix = array(
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array('bit', 'Kibit', 'Mibit', 'Gibit', 'Tibit', 'Pibit', 'Eibit', 'Zibit', 'Yibit'),
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array('bit', 'kbit', 'Mbit', 'Gbit', 'Tbit', 'Pbit', 'Ebit', 'Zbit', 'Ybit'),
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);
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protected static $bitBase = array(1024, 1000);
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protected static $bytePrefix = array(
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array('B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'),
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array('B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'),
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);
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protected static $byteBase = array(1024, 1000);
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public static function getInstance()
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{
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if (self::$instance === null) {
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self::$instance = new Format;
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}
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return self::$instance;
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}
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public static function bits($value, $standard = self::STANDARD_SI)
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{
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return self::formatForUnits(
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$value,
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self::$bitPrefix[$standard],
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self::$bitBase[$standard]
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);
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}
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public static function bytes($value, $standard = self::STANDARD_IEC)
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{
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return self::formatForUnits(
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$value,
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self::$bytePrefix[$standard],
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self::$byteBase[$standard]
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);
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}
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public static function duration($duration)
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{
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if (! $duration) {
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return '-';
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}
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return self::showHourMin($duration);
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}
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protected static function showHourMin($sec)
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{
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$min = floor($sec / 60);
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if ($min < 60) {
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return $min . 'm ' . ($sec % 60) . 's';
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}
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$hour = floor($min / 60);
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if ($hour < 24) {
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return date('H:i', time() - $sec);
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}
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return floor($hour / 24) . 'd ' . ($hour % 24) . 'h';
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}
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public static function timeSince($timestamp)
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{
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if (! $timestamp) {
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return '-';
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}
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if (! preg_match('~^\d+$~', $timestamp)) {
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throw new ProgrammingError(sprintf('"%s" is not a number', $timestamp));
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}
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$duration = time() - $timestamp;
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$prefix = '';
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if ($duration < 0) {
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$prefix = '-';
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$duration *= -1;
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}
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if ($duration > 3600 * 24 * 3) {
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if (date('Y') === date('Y', $timestamp)) {
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return date('d.m.', $timestamp);
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}
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return date('m.Y', $timestamp);
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}
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return $prefix . self::showHourMin($duration);
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}
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public static function timeUntil($timestamp)
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{
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return self::duration($timestamp - time());
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}
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protected static function formatForUnits($value, & $units, $base)
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{
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$sign = '';
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if ($value < 0) {
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$value = abs($value);
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$sign = '-';
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}
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$pow = floor(log($value, $base));
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$result = $value / pow($base, $pow);
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// 1034.23 looks better than 1.03, but 2.03 is fine:
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if ($pow > 0 && $result < 2) {
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$pow--;
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$result = $value / pow($base, $pow);
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}
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return sprintf(
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'%s%0.2f %s',
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$sign,
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$result,
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$units[$pow]
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);
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}
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}
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