<?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) 2006~2025 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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declare(strict_types=1);
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namespace think\response;
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use think\Exception;
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use think\Response;
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/**
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* File Response
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*/
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class File extends Response
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{
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protected $expire = 360;
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protected $name;
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protected $mimeType;
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protected $isContent = false;
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protected $force = true;
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public function __construct($data = '', int $code = 200)
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{
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$this->init($data, $code);
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}
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/**
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* 处理数据
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* @access protected
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* @param mixed $data 要处理的数据
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* @return mixed
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* @throws \Exception
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*/
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protected function output($data)
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{
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if (!$this->isContent && !is_file($data)) {
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throw new Exception('file not exists:' . $data);
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}
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while (ob_get_level() > 0) {
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ob_end_clean();
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}
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if (!empty($this->name)) {
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$name = $this->name;
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} else {
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$name = !$this->isContent ? pathinfo($data, PATHINFO_BASENAME) : '';
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}
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$name = urlencode($name); // 支持中文名称
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if ($this->isContent) {
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$mimeType = $this->mimeType;
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$size = strlen($data);
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} else {
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$mimeType = $this->getMimeType($data);
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$size = filesize($data);
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}
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$this->header['Pragma'] = 'public';
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$this->header['Content-Type'] = $mimeType ?: 'application/octet-stream';
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$this->header['Cache-control'] = 'max-age=' . $this->expire;
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$this->header['Content-Disposition'] = ($this->force ? 'attachment; ' : '') . 'filename="' . $name . '";' . "filename* = UTF-8''{$name}";
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$this->header['Content-Length'] = $size;
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$this->header['Content-Transfer-Encoding'] = 'binary';
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$this->header['Expires'] = gmdate("D, d M Y H:i:s", time() + $this->expire) . ' GMT';
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$this->lastModified(gmdate('D, d M Y H:i:s', time()) . ' GMT');
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return $this->isContent ? $data : file_get_contents($data);
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}
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/**
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* 设置是否为内容 必须配合mimeType方法使用
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* @access public
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* @param bool $content
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* @return $this
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*/
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public function isContent(bool $content = true)
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{
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$this->isContent = $content;
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return $this;
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}
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/**
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* 设置有效期
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* @access public
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* @param integer $expire 有效期
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* @return $this
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*/
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public function expire(int $expire)
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{
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$this->expire = $expire;
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return $this;
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}
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/**
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* 设置文件类型
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* @access public
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* @param string $filename 文件名
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* @return $this
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*/
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public function mimeType(string $mimeType)
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{
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$this->mimeType = $mimeType;
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return $this;
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}
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/**
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* 设置文件强制下载
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* @access public
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* @param bool $force 强制浏览器下载
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* @return $this
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*/
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public function force(bool $force)
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{
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$this->force = $force;
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return $this;
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}
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/**
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* 获取文件类型信息
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* @access public
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* @param string $filename 文件名
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* @return string
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*/
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protected function getMimeType(string $filename): string
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{
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if (!empty($this->mimeType)) {
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return $this->mimeType;
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}
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$finfo = finfo_open(FILEINFO_MIME_TYPE);
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return finfo_file($finfo, $filename);
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}
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/**
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* 设置下载文件的显示名称
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* @access public
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* @param string $filename 文件名
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* @param bool $extension 后缀自动识别
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* @return $this
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*/
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public function name(string $filename, bool $extension = true)
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{
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$this->name = $filename;
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if ($extension && !str_contains($filename, '.')) {
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$this->name .= '.' . pathinfo($this->data, PATHINFO_EXTENSION);
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}
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return $this;
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}
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}
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