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<?php
/**
 * Normalize a filesystem path.
 */
if (!function_exists('wp_normalize_path')) {
	/**
	 * WordPress function to normalize a filesystem path; was added to WP core in WP 3.9
	 *
	 * @see wp_normalize_path() https://developer.wordpress.org/reference/functions/wp_normalize_path/#source for the original source code
	 *
	 * @param string $path Path to normalize.
	 * @return string Normalized path.
	 */
	function wp_normalize_path($path) {
		$wrapper = '';
		if (wp_is_stream($path)) {
			list($wrapper, $path) = explode('://', $path, 2);
			$wrapper .= '://';
		}
		// Standardise all paths to use /
		$path = str_replace('\\', '/', $path);
		// Replace multiple slashes down to a singular, allowing for network shares having two slashes.
		$path = preg_replace('|(?<=.)/+|', '/', $path);
		// Windows paths should uppercase the drive letter
		if (':' === substr($path, 1, 1)) {
			$path = ucfirst($path);
		}
		return $wrapper.$path;
	}
}

/**
 * Unschedules all events attached to the hook.
 */
if (!function_exists('wp_unschedule_hook')) {
	/**
	 * Unschedules all events attached to the hook.
	 *
	 * Can be useful for plugins when deactivating to clean up the cron queue.
	 *
	 * Warning: This function may return Boolean FALSE, but may also return a non-Boolean
	 * value which evaluates to FALSE. For information about casting to booleans see the
	 * {@link https://www.php.net/manual/en/language.types.boolean.php PHP documentation}. Use
	 * the `===` operator for testing the return value of this function.
	 *
	 * @since 4.9.0
	 * @since 5.1.0 Return value added to indicate success or failure.
	 *
	 * @param string $hook Action hook, the execution of which will be unscheduled.
	 * @return int|false On success an integer indicating number of events unscheduled (0 indicates no
	 *                   events were registered on the hook), false if unscheduling fails.
	 */
	function wp_unschedule_hook($hook) {
		/**
		 * Filter to preflight or hijack clearing all events attached to the hook.
		 *
		 * Returning a non-null value will short-circuit the normal unscheduling
		 * process, causing the function to return the filtered value instead.
		 *
		 * For plugins replacing wp-cron, return the number of events successfully
		 * unscheduled (zero if no events were registered with the hook) or false
		 * if unscheduling one or more events fails.
		 *
		 * @since 5.1.0
		 *
		 * @param null|int|false $pre  Value to return instead. Default null to continue unscheduling the hook.
		 * @param string         $hook Action hook, the execution of which will be unscheduled.
		 */
		$pre = apply_filters('pre_unschedule_hook', null, $hook);
		if (null !== $pre) {
			return $pre;
		}

		$crons = _get_cron_array();
		if (empty($crons)) {
			return 0;
		}

		$results = array();
		foreach ($crons as $timestamp => $args) {
			if (!empty($crons[$timestamp][$hook])) {
				$results[] = count($crons[$timestamp][$hook]);
			}
			unset($crons[$timestamp][$hook]);

			if (empty($crons[$timestamp])) {
				unset($crons[$timestamp]);
			}
		}

		/*
		 * If the results are empty (zero events to unschedule), no attempt
		 * to update the cron array is required.
		 */
		if (empty($results)) {
			return 0;
		}
		if (_set_cron_array($crons)) {
			return array_sum($results);
		}
		return false;
	}
}