文件操作 - CacheItem.php

文件: /home/www/public/wp-content/plugins/duplicator/src/Utils/CachesPurge/CacheItem.php

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<?php

namespace Duplicator\Utils\CachesPurge;

use DUP_Log;
use Error;
use Exception;

class CacheItem
{
    /**
     * name of purge element (usualli plugin name)
     *
     * @var string
     */
    protected $name = '';

/**
     * check function, returns true if the element is to be purged
     *
     * @var callable|bool
     */
    protected $checkCallback = null;

/**
     * Purge cache callback
     *
     * @var callable
     */
    protected $purgeCallback = null;

/**
     * Message when cache is purged
     *
     * @var string
     */
    protected $purgedMessage = '';

/**
     * Construnctor
     *
     * @param string        $name          item name
     * @param bool|callable $checkCallback check callback, return true if cache of current item have to removed
     * @param callable      $purgeCallback purge cache callback
     */
    public function __construct($name, $checkCallback, $purgeCallback)
    {
        if (strlen($name) == 0) {
            throw new Exception('name can\'t be empty');
        }
        $this->name = $name;
        if (!is_bool($checkCallback) && !is_callable($checkCallback)) {
            throw new Exception('checkCallback must be boolean or callable');
        }
        $this->checkCallback = $checkCallback;

/* purge callback may not exist if the referenced plugin is not initialized.
 * That's why the check is performed only if you actually purge the plugin
 */
 $this->purgeCallback = $purgeCallback;
 $this->purgedMessage = sprintf(__('All caches on %s have been purged.', 'duplicator'), $this->name);
 }

/**
     * overwrite default purged message
     *
     * @param string $message message if item have benn purged
     *
     * @return void
     */
    public function setPurgedMessage($message)
    {
        $this->purgedMessage = $message;
    }

/**
 * purge caches item
 *
 * @param string $message message if item have benn purged
 *
 * @return bool
 */
 public function purge(&$message)
 {
 try {
 if (
 (is_bool($this->checkCallback) && $this->checkCallback) ||
 call_user_func($this->checkCallback) == true
 ) {
 DUP_Log::trace('Purge ' . $this->name);
 if (!is_callable($this->purgeCallback)) {
 throw new Exception('purgeCallback must be callable');
 }
 call_user_func($this->purgeCallback);
 $message = $this->purgedMessage;
 }
 return true;
 } catch (Exception $e) {
 DUP_Log::trace('Error purge ' . $this->name . ' message:' . $e->getMessage());
 $message = sprintf(__('Error on caches purge of %s.', 'duplicator'), $this->name);
 return false;
 } catch (Error $e) {
 DUP_Log::trace('Error purge ' . $this->name . ' message:' . $e->getMessage());
 $message = sprintf(__('Error on caches purge of %s.', 'duplicator'), $this->name);
 return false;
 }
 }
}

文件操作 - CacheItem.php

文件: /home/www/public/wp-content/plugins/duplicator/src/Utils/CachesPurge/CacheItem.php

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