<?php

namespace Vn\Web;

class Util
{
	/**
	 * Reads a file and writes it to the output buffer. 
	 *
	 * @param string file The file path
	 * @param boolean useXsendfile Wether to use the apache module Xsendfile
	 */
	static function printFile ($file, $useXsendfile = FALSE)
	{
		if (!file_exists ($file))
		{
			http_response_code (404);
			return;
		}

		$finfo = new \finfo (FILEINFO_MIME_TYPE);
		$mimeType = $finfo->file ($file);

		if ($useXsendfile)
		{
			header ("X-Sendfile: $file");
			header ("Content-Type: $mimeType");
		}
		else
		{
			header ('Content-Description: File Transfer');
			header ("Content-Type: $mimeType");
			header ('Content-Disposition: attachment; filename="'. basename ($file) .'"');
			header ('Expires: 0');
			header ('Cache-Control: must-revalidate');
			header ('Pragma: public');
			header ('Content-Length: '. filesize ($file));

			set_time_limit (0);
			readfile ($file);
		}
	}
}

