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<?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) 2006~2019 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 <[email protected]> |
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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 $isContent = false; |
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public function __construct($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:' . $data); |
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} |
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ob_end_clean(); |
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if (!empty($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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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'] = 'attachment; filename="' . $name . '"'; |
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$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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* 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 && false === strpos($filename, '.')) { |
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$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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