1<?php 2/** 3 * A simple renderer that allows downloading of code and file snippets 4 * 5 * @author Andreas Gohr <andi@splitbrain.org> 6 */ 7if(!defined('DOKU_INC')) die('meh.'); 8 9class Doku_Renderer_code extends Doku_Renderer { 10 var $_codeblock = 0; 11 12 /** 13 * Send the wanted code block to the browser 14 * 15 * When the correct block was found it exits the script. 16 * 17 * @param string $text 18 * @param string $language 19 * @param string $filename 20 */ 21 function code($text, $language = null, $filename = '') { 22 global $INPUT; 23 if(!$language) $language = 'txt'; 24 $language = preg_replace(PREG_PATTERN_VALID_LANGUAGE, '', $language); 25 if(!$filename) $filename = 'snippet.'.$language; 26 $filename = utf8_basename($filename); 27 $filename = utf8_stripspecials($filename, '_'); 28 29 // send CRLF to Windows clients 30 if(strpos($INPUT->server->str('HTTP_USER_AGENT'), 'Windows') !== false) { 31 $text = str_replace("\n", "\r\n", $text); 32 } 33 34 if($this->_codeblock == $INPUT->str('codeblock')) { 35 header("Content-Type: text/plain; charset=utf-8"); 36 header("Content-Disposition: attachment; filename=$filename"); 37 header("X-Robots-Tag: noindex"); 38 echo trim($text, "\r\n"); 39 exit; 40 } 41 42 $this->_codeblock++; 43 } 44 45 /** 46 * Wraps around code() 47 * 48 * @param string $text 49 * @param string $language 50 * @param string $filename 51 */ 52 function file($text, $language = null, $filename = '') { 53 $this->code($text, $language, $filename); 54 } 55 56 /** 57 * This should never be reached, if it is send a 404 58 */ 59 function document_end() { 60 http_status(404); 61 echo '404 - Not found'; 62 exit; 63 } 64 65 /** 66 * Return the format of the renderer 67 * 68 * @returns string 'code' 69 */ 70 function getFormat() { 71 return 'code'; 72 } 73} 74