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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  6:  */
  7: 
  8: namespace Nette\Application\Responses;
  9: 
 10: use Nette;
 11: 
 12: 
 13: /**
 14:  * File download response.
 15:  *
 16:  * @author     David Grudl
 17:  *
 18:  * @property-read string $file
 19:  * @property-read string $name
 20:  * @property-read string $contentType
 21:  */
 22: class FileResponse extends Nette\Object implements Nette\Application\IResponse
 23: {
 24:     /** @var string */
 25:     private $file;
 26: 
 27:     /** @var string */
 28:     private $contentType;
 29: 
 30:     /** @var string */
 31:     private $name;
 32: 
 33:     /** @var bool */
 34:     public $resuming = TRUE;
 35: 
 36:     /** @var bool */
 37:     private $forceDownload;
 38: 
 39: 
 40:     /**
 41:      * @param  string  file path
 42:      * @param  string  imposed file name
 43:      * @param  string  MIME content type
 44:      */
 45:     public function __construct($file, $name = NULL, $contentType = NULL, $forceDownload = TRUE)
 46:     {
 47:         if (!is_file($file)) {
 48:             throw new Nette\Application\BadRequestException("File '$file' doesn't exist.");
 49:         }
 50: 
 51:         $this->file = $file;
 52:         $this->name = $name ? $name : basename($file);
 53:         $this->contentType = $contentType ? $contentType : 'application/octet-stream';
 54:         $this->forceDownload = $forceDownload;
 55:     }
 56: 
 57: 
 58:     /**
 59:      * Returns the path to a downloaded file.
 60:      * @return string
 61:      */
 62:     public function getFile()
 63:     {
 64:         return $this->file;
 65:     }
 66: 
 67: 
 68:     /**
 69:      * Returns the file name.
 70:      * @return string
 71:      */
 72:     public function getName()
 73:     {
 74:         return $this->name;
 75:     }
 76: 
 77: 
 78:     /**
 79:      * Returns the MIME content type of a downloaded file.
 80:      * @return string
 81:      */
 82:     public function getContentType()
 83:     {
 84:         return $this->contentType;
 85:     }
 86: 
 87: 
 88:     /**
 89:      * Sends response to output.
 90:      * @return void
 91:      */
 92:     public function send(Nette\Http\IRequest $httpRequest, Nette\Http\IResponse $httpResponse)
 93:     {
 94:         $httpResponse->setContentType($this->contentType);
 95:         $httpResponse->setHeader('Content-Disposition',
 96:             ($this->forceDownload ? 'attachment' : 'inline')
 97:                 . '; filename="' . $this->name . '"'
 98:                 . '; filename*=utf-8\'\'' . rawurlencode($this->name));
 99: 
100:         $filesize = $length = filesize($this->file);
101:         $handle = fopen($this->file, 'r');
102: 
103:         if ($this->resuming) {
104:             $httpResponse->setHeader('Accept-Ranges', 'bytes');
105:             if (preg_match('#^bytes=(\d*)-(\d*)\z#', $httpRequest->getHeader('Range'), $matches)) {
106:                 list(, $start, $end) = $matches;
107:                 if ($start === '') {
108:                     $start = max(0, $filesize - $end);
109:                     $end = $filesize - 1;
110: 
111:                 } elseif ($end === '' || $end > $filesize - 1) {
112:                     $end = $filesize - 1;
113:                 }
114:                 if ($end < $start) {
115:                     $httpResponse->setCode(416); // requested range not satisfiable
116:                     return;
117:                 }
118: 
119:                 $httpResponse->setCode(206);
120:                 $httpResponse->setHeader('Content-Range', 'bytes ' . $start . '-' . $end . '/' . $filesize);
121:                 $length = $end - $start + 1;
122:                 fseek($handle, $start);
123: 
124:             } else {
125:                 $httpResponse->setHeader('Content-Range', 'bytes 0-' . ($filesize - 1) . '/' . $filesize);
126:             }
127:         }
128: 
129:         $httpResponse->setHeader('Content-Length', $length);
130:         while (!feof($handle) && $length > 0) {
131:             echo $s = fread($handle, min(4e6, $length));
132:             $length -= strlen($s);
133:         }
134:         fclose($handle);
135:     }
136: 
137: }
138: 
Nette 2.3.1 API API documentation generated by ApiGen 2.8.0