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Classes

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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  *
  6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  * @package Nette\Application\Responses
 11:  */
 12: 
 13: 
 14: 
 15: /**
 16:  * File download response.
 17:  *
 18:  * @author     David Grudl
 19:  *
 20:  * @property-read string $file
 21:  * @property-read string $name
 22:  * @property-read string $contentType
 23:  * @package Nette\Application\Responses
 24:  */
 25: class NFileResponse extends NObject implements IPresenterResponse
 26: {
 27:     /** @var string */
 28:     private $file;
 29: 
 30:     /** @var string */
 31:     private $contentType;
 32: 
 33:     /** @var string */
 34:     private $name;
 35: 
 36:     /** @var bool */
 37:     public $resuming = TRUE;
 38: 
 39: 
 40:     /**
 41:      * @param  string  file path
 42:      * @param  string  imposed file name
 43:      * @param  string  MIME content type
 44:      */
 45:     public function __construct($file, $name = NULL, $contentType = NULL)
 46:     {
 47:         if (!is_file($file)) {
 48:             throw new NBadRequestException("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:     }
 55: 
 56: 
 57: 
 58:     /**
 59:      * Returns the path to a downloaded file.
 60:      * @return string
 61:      */
 62:     final public function getFile()
 63:     {
 64:         return $this->file;
 65:     }
 66: 
 67: 
 68: 
 69:     /**
 70:      * Returns the file name.
 71:      * @return string
 72:      */
 73:     final public function getName()
 74:     {
 75:         return $this->name;
 76:     }
 77: 
 78: 
 79: 
 80:     /**
 81:      * Returns the MIME content type of a downloaded file.
 82:      * @return string
 83:      */
 84:     final public function getContentType()
 85:     {
 86:         return $this->contentType;
 87:     }
 88: 
 89: 
 90: 
 91:     /**
 92:      * Sends response to output.
 93:      * @return void
 94:      */
 95:     public function send(IHttpRequest $httpRequest, IHttpResponse $httpResponse)
 96:     {
 97:         $httpResponse->setContentType($this->contentType);
 98:         $httpResponse->setHeader('Content-Disposition', 'attachment; filename="' . $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 Framework 2.0.7 (for PHP 5.2, prefixed) API API documentation generated by ApiGen 2.8.0