XHTMLCompiler/Markup/Markdown.php

   1 <?php
   2
   3 class XHTMLCompiler_Markup_Markdown extends XHTMLCompiler_TextFilter
   4 {
   5
   6     var $name = 'Markdown';
   7
   8     public function process($text, $page, $manager) {
   9         // This code assumes that the input is \n. I don't the code actually
  10         // handles this right now.
  11         $title = "Untitled";
  12         $bits = explode("\n", $text, 3);
  13         if (isset($bits[2])) {
  14             if (trim($bits[0]) === '---') {
  15                 // this means we've got YAML: find the next --- line
  16                 $end = strpos($text, "---\n", 4);
  17                 $yaml = substr($text, 4, $end - 4);
  18                 $data = Spyc::YAMLLoad($yaml);
  19                 $title = $data['title'];
  20                 $text = substr($text, $end + 4);
  21             } elseif (strlen($bits[1]) > 0 && trim($bits[1], '=') === '') {
  22                 // parse out a leading header, which we will treat as the header
  23                 // (this is the only bit of metadata we're going to do)
  24                 $text = $bits[2];
  25                 $title = $bits[0];
  26             }
  27         }
  28
  29         $body = Markdown($text);
  30         // perform template search
  31         $dir = $page->getDir();
  32         $template = $dir->getFile('template.xml');
  33         while (!$template->exists()) {
  34             $dir = $dir->getParent();
  35             if (!$dir->isAllowed()) break;
  36             $template = $dir->getFile('template.xml');
  37         }
  38         if (!$template->exists()) {
  39             // maybe a cheap copout, maybe an exception
  40             throw new XHTMLCompiler_Exception(500, 'No template file',
  41                 'Markup snippet had no template file to inline into.');
  42         }
  43         $html = $template->get();
  44         $html = str_replace('{body}', $body, $html);
  45         $html = str_replace('{title}', $title, $html);
  46         return $html;
  47     }
  48
  49 }