XHTMLCompiler/DOMFilter/News.php

   1 <?php
   2
   3 /**
   4  * Mini blog-style filter for globbing contents of another directory
   5  * and inserting summaries into a main page.
   6  * @note This filter should be run before other "cosmetic" filters, as
   7  *       it makes major changes to page content.
   8  */
   9 class XHTMLCompiler_DOMFilter_News extends XHTMLCompiler_DOMFilter
  10 {
  11     protected $name = 'News';
  12     protected $prefix = 'news';
  13     public function process(DOMDocument $dom, $page, $manager) {
  14         $container = $this->query("//html:div[@news:source]")->item(0);
  15         if (!$container) return;
  16         $source = $this->confiscateAttr($container, $this->ns, 'source');
  17         $source = $page->normalizePath($source);
  18         // :TODO: add DI for this
  19         $fs = new FSTools();
  20         $xc = XHTMLCompiler::getInstance();
  21         $result = $fs->globr($source, '*.xhtml');
  22         rsort($result);
  23         $manager = $xc->getFilterManager();
  24         // :TODO: Make this limit configurable
  25         for ($i = 0, $c = count($result); $i < 5 && $i < $c; $i++) {
  26             $entry = $result[$i];
  27             $entryFile = new XHTMLCompiler_Page($entry);
  28             $subdom = $manager->parse($entryFile->getSource(), $entryFile);
  29
  30             $entryNode = $dom->createElement('div');
  31             $entryNode->setAttribute('class', 'item');
  32
  33             // Generate ID for this entry. The format is
  34             // year-month-date-lc-title-with-dashes
  35             $entryNode->setAttribute('id', $this->generateId($entryFile->getPathStem()));
  36
  37             // Grab the title
  38             $node = $subdom->getElementsByTagName('h1')->item(0);
  39             $h1 = $dom->importNode($node, true);
  40             $h2 = $dom->createElement('h2');
  41             $h2->setAttribute('class', 'title');
  42             foreach ($h1->childNodes as $h1node) $h2->appendChild($h1node);
  43             $entryNode->appendChild($h2);
  44
  45             // Grab the content
  46             // :WARNING: This code apparently leaves behind an
  47             // xmlns statement, although we're not quite sure why.
  48             $node = $subdom->getElementById('content');
  49             $node = $dom->importNode($node, true);
  50             $this->confiscateAttr($node, 'id');
  51             $node->setAttribute('class', 'body');
  52             $entryNode->appendChild($node);
  53
  54             // Make permalink
  55             $a = $dom->createElement('a');
  56             $a->setAttribute('href', $entryFile->getAbsolutePath());
  57             $a->appendChild($dom->createTextNode('Permalink'));
  58             $entryNode->appendChild($a);
  59
  60             $container->appendChild($entryNode);
  61         }
  62     }
  63
  64     /**
  65      * Generates an ID based on the filename of a blog entry
  66      */
  67     public function generateId($entry) {
  68         $parts = array_slice(explode('/', $entry), -2);
  69         // A very specific format: year/monthday-entry-name, like 2008/0131-foobar
  70         // Arbitrary folders before that is ok.
  71         $entry = 'entry-' . $parts[0] .
  72             '-' . substr($parts[1], 0, 2) .
  73             '-' . substr($parts[1], 2, 2) .
  74             '-' . substr($parts[1], 5);
  75         return $entry;
  76     }
  77
  78 }