laravel/system/download.php

<?php namespace System;

class Download {

	/**
	 * Extensions and their matching MIME types.
	 *
	 * @var array
	 */
	public static $mimes = array(
		'hqx'	=>	'application/mac-binhex40',
		'cpt'	=>	'application/mac-compactpro',
		'csv'	=>	'text/x-comma-separated-values',
		'bin'	=>	'application/macbinary',
		'dms'	=>	'application/octet-stream',
		'lha'	=>	'application/octet-stream',
		'lzh'	=>	'application/octet-stream',
		'exe'	=>	'application/octet-stream',
		'class'	=>	'application/octet-stream',
		'psd'	=>	'application/x-photoshop',
		'so'	=>	'application/octet-stream',
		'sea'	=>	'application/octet-stream',
		'dll'	=>	'application/octet-stream',
		'oda'	=>	'application/oda',
		'pdf'	=>	'application/pdf',
		'ai'	=>	'application/postscript',
		'eps'	=>	'application/postscript',
		'ps'	=>	'application/postscript',
		'smi'	=>	'application/smil',
		'smil'	=>	'application/smil',
		'mif'	=>	'application/vnd.mif',
		'xls'	=>	'application/excel',
		'ppt'	=>	'application/powerpoint',
		'wbxml'	=>	'application/wbxml',
		'wmlc'	=>	'application/wmlc',
		'dcr'	=>	'application/x-director',
		'dir'	=>	'application/x-director',
		'dxr'	=>	'application/x-director',
		'dvi'	=>	'application/x-dvi',
		'gtar'	=>	'application/x-gtar',
		'gz'	=>	'application/x-gzip',
		'php'	=>	'application/x-httpd-php',
		'php4'	=>	'application/x-httpd-php',
		'php3'	=>	'application/x-httpd-php',
		'phtml'	=>	'application/x-httpd-php',
		'phps'	=>	'application/x-httpd-php-source',
		'js'	=>	'application/x-javascript',
		'swf'	=>	'application/x-shockwave-flash',
		'sit'	=>	'application/x-stuffit',
		'tar'	=>	'application/x-tar',
		'tgz'	=>	'application/x-tar',
		'xhtml'	=>	'application/xhtml+xml',
		'xht'	=>	'application/xhtml+xml',
		'zip'	=>  'application/x-zip',
		'mid'	=>	'audio/midi',
		'midi'	=>	'audio/midi',
		'mpga'	=>	'audio/mpeg',
		'mp2'	=>	'audio/mpeg',
		'mp3'	=>	'audio/mpeg',
		'aif'	=>	'audio/x-aiff',
		'aiff'	=>	'audio/x-aiff',
		'aifc'	=>	'audio/x-aiff',
		'ram'	=>	'audio/x-pn-realaudio',
		'rm'	=>	'audio/x-pn-realaudio',
		'rpm'	=>	'audio/x-pn-realaudio-plugin',
		'ra'	=>	'audio/x-realaudio',
		'rv'	=>	'video/vnd.rn-realvideo',
		'wav'	=>	'audio/x-wav',
		'bmp'	=>	'image/bmp',
		'gif'	=>	'image/gif',
		'jpeg'	=>	'image/jpeg',
		'jpg'	=>	'image/jpeg',
		'jpe'	=>	'image/jpeg',
		'png'	=>	'image/png',
		'tiff'	=>	'image/tiff',
		'tif'	=>	'image/tiff',
		'css'	=>	'text/css',
		'html'	=>	'text/html',
		'htm'	=>	'text/html',
		'shtml'	=>	'text/html',
		'txt'	=>	'text/plain',
		'text'	=>	'text/plain',
		'log'	=>	'text/plain',
		'rtx'	=>	'text/richtext',
		'rtf'	=>	'text/rtf',
		'xml'	=>	'text/xml',
		'xsl'	=>	'text/xml',
		'mpeg'	=>	'video/mpeg',
		'mpg'	=>	'video/mpeg',
		'mpe'	=>	'video/mpeg',
		'qt'	=>	'video/quicktime',
		'mov'	=>	'video/quicktime',
		'avi'	=>	'video/x-msvideo',
		'movie'	=>	'video/x-sgi-movie',
		'doc'	=>	'application/msword',
		'docx'	=>	'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
		'xlsx'	=>	'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
		'word'	=>	'application/msword',
		'xl'	=>	'application/excel',
		'eml'	=>	'message/rfc822'
	);

	/**
	 * Create a download response.
	 *
	 * @param  string  $path
	 * @param  string  $name
	 * @return Response
	 */
	public static function file($path, $name = null)
	{
		// -------------------------------------------------
		// If no name was specified, just use the basename.
		// -------------------------------------------------
		if (is_null($name))
		{
			$name = basename($path);
		}

		// -------------------------------------------------
		// Set the headers to force the download to occur.
		// -------------------------------------------------
		return Response::make(file_get_contents($path))->header('Content-Description', 'File Transfer')
				 	  						  		   ->header('Content-Type', static::mime(pathinfo($path, PATHINFO_EXTENSION)))
					  						  		   ->header('Content-Disposition', 'attachment; filename="'.$name.'"')
					  						  		   ->header('Content-Transfer-Encoding', 'binary')
					  						  		   ->header('Expires', 0)
					  						  		   ->header('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
					  						  		   ->header('Pragma', 'public')
					  						  		   ->header('Content-Length', filesize($path));
	}

	/**
	 * Get a MIME type by extension.
	 *
	 * @param  string  $extension
	 * @param  string  $default
	 * @return string
	 */
	public static function mime($extension, $default = 'application/octet-stream')
	{
		return (array_key_exists($extension, static::$mimes)) ? static::$mimes[$extension] : $default;
	}

}