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- <?php
- // +----------------------------------------------------------------------
- // | ThinkPHP [ WE CAN DO IT JUST THINK ]
- // +----------------------------------------------------------------------
- // | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
- // +----------------------------------------------------------------------
- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
- // +----------------------------------------------------------------------
- // | Author: liu21st <liu21st@gmail.com>
- // +----------------------------------------------------------------------
-
- namespace think;
-
- class Hook
- {
- /**
- * @var array 标签
- */
- private static $tags = [];
-
- /**
- * 动态添加行为扩展到某个标签
- * @access public
- * @param string $tag 标签名称
- * @param mixed $behavior 行为名称
- * @param bool $first 是否放到开头执行
- * @return void
- */
- public static function add($tag, $behavior, $first = false)
- {
- isset(self::$tags[$tag]) || self::$tags[$tag] = [];
-
- if (is_array($behavior) && !is_callable($behavior)) {
- if (!array_key_exists('_overlay', $behavior) || !$behavior['_overlay']) {
- unset($behavior['_overlay']);
- self::$tags[$tag] = array_merge(self::$tags[$tag], $behavior);
- } else {
- unset($behavior['_overlay']);
- self::$tags[$tag] = $behavior;
- }
- } elseif ($first) {
- array_unshift(self::$tags[$tag], $behavior);
- } else {
- self::$tags[$tag][] = $behavior;
- }
- }
-
- /**
- * 批量导入插件
- * @access public
- * @param array $tags 插件信息
- * @param boolean $recursive 是否递归合并
- * @return void
- */
- public static function import(array $tags, $recursive = true)
- {
- if ($recursive) {
- foreach ($tags as $tag => $behavior) {
- self::add($tag, $behavior);
- }
- } else {
- self::$tags = $tags + self::$tags;
- }
- }
-
- /**
- * 获取插件信息
- * @access public
- * @param string $tag 插件位置(留空获取全部)
- * @return array
- */
- public static function get($tag = '')
- {
- if (empty($tag)) {
- return self::$tags;
- }
-
- return array_key_exists($tag, self::$tags) ? self::$tags[$tag] : [];
- }
-
- /**
- * 监听标签的行为
- * @access public
- * @param string $tag 标签名称
- * @param mixed $params 传入参数
- * @param mixed $extra 额外参数
- * @param bool $once 只获取一个有效返回值
- * @return mixed
- */
- public static function listen($tag, &$params = null, $extra = null, $once = false)
- {
- $results = [];
-
- foreach (static::get($tag) as $key => $name) {
- $results[$key] = self::exec($name, $tag, $params, $extra);
-
- // 如果返回 false,或者仅获取一个有效返回则中断行为执行
- if (false === $results[$key] || (!is_null($results[$key]) && $once)) {
- break;
- }
- }
-
- return $once ? end($results) : $results;
- }
-
- /**
- * 执行某个行为
- * @access public
- * @param mixed $class 要执行的行为
- * @param string $tag 方法名(标签名)
- * @param mixed $params 传人的参数
- * @param mixed $extra 额外参数
- * @return mixed
- */
- public static function exec($class, $tag = '', &$params = null, $extra = null)
- {
- App::$debug && Debug::remark('behavior_start', 'time');
-
- $method = Loader::parseName($tag, 1, false);
-
- if ($class instanceof \Closure) {
- $result = call_user_func_array($class, [ & $params, $extra]);
- $class = 'Closure';
- } elseif (is_array($class)) {
- list($class, $method) = $class;
-
- $result = (new $class())->$method($params, $extra);
- $class = $class . '->' . $method;
- } elseif (is_object($class)) {
- $result = $class->$method($params, $extra);
- $class = get_class($class);
- } elseif (strpos($class, '::')) {
- $result = call_user_func_array($class, [ & $params, $extra]);
- } else {
- $obj = new $class();
- $method = ($tag && is_callable([$obj, $method])) ? $method : 'run';
- $result = $obj->$method($params, $extra);
- }
-
- if (App::$debug) {
- Debug::remark('behavior_end', 'time');
- Log::record('[ BEHAVIOR ] Run ' . $class . ' @' . $tag . ' [ RunTime:' . Debug::getRangeTime('behavior_start', 'behavior_end') . 's ]', 'info');
- }
-
- return $result;
- }
-
- }
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