fix: 上传TP框架

thinkphp/library/think/console/output/formatter/Stack.php

@@ -0,0 +1,116 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2015 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: yunwuxin <448901948@qq.com>
+// +----------------------------------------------------------------------
+
+namespace think\console\output\formatter;
+
+class Stack
+{
+
+    /**
+     * @var Style[]
+     */
+    private $styles;
+
+    /**
+     * @var Style
+     */
+    private $emptyStyle;
+
+    /**
+     * 构造方法
+     * @param Style|null $emptyStyle
+     */
+    public function __construct(Style $emptyStyle = null)
+    {
+        $this->emptyStyle = $emptyStyle ?: new Style();
+        $this->reset();
+    }
+
+    /**
+     * 重置堆栈
+     */
+    public function reset()
+    {
+        $this->styles = [];
+    }
+
+    /**
+     * 推一个样式进入堆栈
+     * @param Style $style
+     */
+    public function push(Style $style)
+    {
+        $this->styles[] = $style;
+    }
+
+    /**
+     * 从堆栈中弹出一个样式
+     * @param Style|null $style
+     * @return Style
+     * @throws \InvalidArgumentException
+     */
+    public function pop(Style $style = null)
+    {
+        if (empty($this->styles)) {
+            return $this->emptyStyle;
+        }
+
+        if (null === $style) {
+            return array_pop($this->styles);
+        }
+
+        /**
+         * @var int   $index
+         * @var Style $stackedStyle
+         */
+        foreach (array_reverse($this->styles, true) as $index => $stackedStyle) {
+            if ($style->apply('') === $stackedStyle->apply('')) {
+                $this->styles = array_slice($this->styles, 0, $index);
+
+                return $stackedStyle;
+            }
+        }
+
+        throw new \InvalidArgumentException('Incorrectly nested style tag found.');
+    }
+
+    /**
+     * 计算堆栈的当前样式。
+     * @return Style
+     */
+    public function getCurrent()
+    {
+        if (empty($this->styles)) {
+            return $this->emptyStyle;
+        }
+
+        return $this->styles[count($this->styles) - 1];
+    }
+
+    /**
+     * @param Style $emptyStyle
+     * @return Stack
+     */
+    public function setEmptyStyle(Style $emptyStyle)
+    {
+        $this->emptyStyle = $emptyStyle;
+
+        return $this;
+    }
+
+    /**
+     * @return Style
+     */
+    public function getEmptyStyle()
+    {
+        return $this->emptyStyle;
+    }
+}