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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Formatter\OutputFormatterInterface;

/**
 * Helper is the base class for all helper classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class Helper implements HelperInterface
{
    protected $helperSet = null;

/**
     * Sets the helper set associated with this helper.
     *
     * @param HelperSet $helperSet A HelperSet instance
     */
    public function setHelperSet(HelperSet $helperSet = null)
    {
        $this->helperSet = $helperSet;
    }

/**
     * Gets the helper set associated with this helper.
     *
     * @return HelperSet A HelperSet instance
     */
    public function getHelperSet()
    {
        return $this->helperSet;
    }

/**
     * Returns the length of a string, using mb_strlen if it is available.
     *
     * @param string $string The string to check its length
     *
     * @return int The length of the string
     */
    public static function strlen($string)
    {
        if (!function_exists('mb_strwidth')) {
            return strlen($string);
        }

if (false === $encoding = mb_detect_encoding($string)) {
            return strlen($string);
        }

return mb_strwidth($string, $encoding);
    }

public static function formatTime($secs)
    {
        static $timeFormats = array(
            array(0, '< 1 sec'),
            array(2, '1 sec'),
            array(59, 'secs', 1),
            array(60, '1 min'),
            array(3600, 'mins', 60),
            array(5400, '1 hr'),
            array(86400, 'hrs', 3600),
            array(129600, '1 day'),
            array(604800, 'days', 86400),
        );

foreach ($timeFormats as $format) {
            if ($secs >= $format[0]) {
                continue;
            }

if (2 == count($format)) {
                return $format[1];
            }

return ceil($secs / $format[2]).' '.$format[1];
        }
    }

public static function formatMemory($memory)
    {
        if ($memory >= 1024 * 1024 * 1024) {
            return sprintf('%.1f GiB', $memory / 1024 / 1024 / 1024);
        }

if ($memory >= 1024 * 1024) {
            return sprintf('%.1f MiB', $memory / 1024 / 1024);
        }

if ($memory >= 1024) {
            return sprintf('%d KiB', $memory / 1024);
        }

return sprintf('%d B', $memory);
    }

public static function strlenWithoutDecoration(OutputFormatterInterface $formatter, $string)
    {
        $isDecorated = $formatter->isDecorated();
        $formatter->setDecorated(false);
        // remove <...> formatting
        $string = $formatter->format($string);
        // remove already formatted characters
        $string = preg_replace("/\033\[[^m]*m/", '', $string);
        $formatter->setDecorated($isDecorated);

return self::strlen($string);
    }
}

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