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