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   1  <?php
   2  /**
   3   * A simple renderer that allows downloading of code and file snippets
   4   *
   5   * @author Andreas Gohr <andi@splitbrain.org>
   6   */
   7  class Doku_Renderer_code extends Doku_Renderer {
   8      protected $_codeblock = 0;
   9  
  10      /**
  11       * Send the wanted code block to the browser
  12       *
  13       * When the correct block was found it exits the script.
  14       *
  15       * @param string $text
  16       * @param string $language
  17       * @param string $filename
  18       */
  19      public function code($text, $language = null, $filename = '') {
  20          global $INPUT;
  21          if(!$language) $language = 'txt';
  22          $language = preg_replace(PREG_PATTERN_VALID_LANGUAGE, '', $language);
  23          if(!$filename) $filename = 'snippet.'.$language;
  24          $filename = \dokuwiki\Utf8\PhpString::basename($filename);
  25          $filename = \dokuwiki\Utf8\Clean::stripspecials($filename, '_');
  26  
  27          // send CRLF to Windows clients
  28          if(strpos($INPUT->server->str('HTTP_USER_AGENT'), 'Windows') !== false) {
  29              $text = str_replace("\n", "\r\n", $text);
  30          }
  31  
  32          if($this->_codeblock == $INPUT->str('codeblock')) {
  33              header("Content-Type: text/plain; charset=utf-8");
  34              header("Content-Disposition: attachment; filename=$filename");
  35              header("X-Robots-Tag: noindex");
  36              echo trim($text, "\r\n");
  37              exit;
  38          }
  39  
  40          $this->_codeblock++;
  41      }
  42  
  43      /**
  44       * Wraps around code()
  45       *
  46       * @param string $text
  47       * @param string $language
  48       * @param string $filename
  49       */
  50      public function file($text, $language = null, $filename = '') {
  51          $this->code($text, $language, $filename);
  52      }
  53  
  54      /**
  55       * This should never be reached, if it is send a 404
  56       */
  57      public function document_end() {
  58          http_status(404);
  59          echo '404 - Not found';
  60          exit;
  61      }
  62  
  63      /**
  64       * Return the format of the renderer
  65       *
  66       * @returns string 'code'
  67       */
  68      public function getFormat() {
  69          return 'code';
  70      }
  71  }